METHOD AND DEVICE FOR AVOIDING HARMONIC WAVES

Abstract

It is found and confirmed that a harmonic wave source is a traditionally-used multi-core wire with mutually-exposed core wires. By using a multi-core wire or a single-core wire with mutually-insulated core wires to replace the traditionally-used multi-core wire, a large number of harmonic waves produced by the mutually-exposed core wires can be avoided, the working quality of a power utilization device and an electric energy and electrical signal transmission network is improved at low costs, and electric energy is saved. A method for using a lead wire structure with insulated core wires is used to avoid harmonic ripple noise produced in seamed transmission, or to avoid electric energy waste caused by harmonic ripple noise produced in seamed transmission, or to avoid the influence of harmonic ripple noise produced in seamed transmission on the working quality of a power utilization device or an electric energy and/or electrical signal transmission network. A power utilization device other than an earphone and an electric energy and electrical signal transmission network system, comprising a multi-core transmission lead wire, wherein one or some or all of core wires of the multi-core transmission lead wire are mutually insulated.

Claims

1. A usage method of a cable structure having insulated core wires, wherein the cable structure is configured to avoid harmonics, ripples and noises produced by use of a solution of seamed transmission of electric energy and/or an electrical signal; or configured to avoid electric energy waste caused by the harmonics, ripples and noises produced by the seamed transmission of the electric energy and/or electrical signal; or configured to avoid the harmonics, ripples and noises produced by the seamed transmission of the electric energy and/or electrical signal from influencing a working quality of an electricity related device and a working quality of an electric energy and/or electrical signal transmission network system.

2. The usage method of a cable structure having insulated core wires according to claim 1, wherein the cable structure is configured to transmit and distribute electric energy within the electricity related device, or configured to input or output electric energy to or from the electricity related device, or configured to transmit an electrical signal within the electricity related device, or configured to input or output an electrical signal to or from the electricity related device, or applicable to a high voltage AC electric energy transmission network system, or applicable to a low voltage AC electric energy transmission network system, or applicable to a DC electric energy transmission network system, or applicable to an electrical signal transmission network system, or applicable to manufacturing multi-core transmission cables of various types and various specifications that are adapted to different voltages and different flows and enable seamless transmission of the electric energy and/or electrical signal.

3. The usage method of a cable structure having insulated core wires according to claim 1 or 2, wherein the cable structure having insulated core wires comprises one or more transmission channels constituted by multi-core cables, or comprises one or more transmission channels constituted by single-core cables, or comprises more than two transmission channels constitute by multi-core cables and single-core cables in combination.

4. An electricity related device, which is not earphones, the electricity related device comprising multi-core transmission cables for transmitting and distributing electric energy within the electricity related device, inputting external electric energy, outputting electric energy, transmitting an electrical signal internally, inputting an external electrical signal, or outputting an electrical signal, wherein one or part or all of the multi-core transmission cables have individual core wires used for transmission insulated from each other, with the core wires used for transmission provided in the multi-core transmission cables.

5. The electricity related device according to claim 4, wherein within the multi-core cable used in the electricity related device, individual core wires used for transmission are insulated from each other by adopting an insulation solution, in which surfaces of the core wires are coated with an insulating paint, or wrapped with an oxide insulation layer, or wrapped with an electrostatic coating; or insulated segments and bare wire segments are provided alternately, or bare core wires and insulated core wires are arranged alternately; or the core wires are wound with a strip-like insulator, or wrapped with a powder insulation layer, or wrapped with a release layer and an insulation layer; or a wrapped insulation layer falls off automatically after a period of time, or falls off when being rubbed by a finger; or a positioning device is used to form a spatial distance between the core wires.

6. The electricity related device according to claim 5, wherein the insulating paint is polyurethane, or a main component of the insulating paint comprises polyurethane.

7. The electricity related device according to claim 4, wherein the core wires within one of the multi-core cables are conductors of a same material, or conductors of two or more different materials; or conductor materials of two or more of the multi-core cables are different from each other; or some of the individual core wires of the multi-core transmission cables can be made of any material so as to be uninsulated, and the uninsulated core wires are configured for purposes other than transmitting electric energy and/or an electrical signal.

8. The electricity related device according to claim 4, wherein the core wires used for transmission of the multi-core cable used in the electricity related device have a same diameter; or the multi-core cables used in the electricity related device are of a circular cross section; or each of the core wires used for transmission of the multi-core cable used in the electricity related device is of a circular cross section; or multiple core wires of the multi-core transmission cable are stranded to form one transmission channel; or multiple core wires of the multi-core transmission cable are linearly collocated without being stranded, to form one transmission channel; or multiple core wires are in different lengths, with part of the multiple core wires stranded and the remaining being linear, and the stranded and the linear wires forming one transmission channel.

9. The electricity related device according to claim 4, wherein one end or both ends of the multi-core cable is provided with a plug connector, and the plug connector is configured for connection with individual units within an electricity related device having a corresponding plug connector, or for connection with an electricity related device having a corresponding plug connector; and the multi-core cable is provided with a shielding layer, a vibration reducing layer or a filtering magnetic ring, or the multi-core cable has one or more transmission channels, or the multi-core cable is free of a peripheral insulation layer.

10. The electricity related device according to claim 4, wherein one or more of the multi-core cables each have more than one transmission channels.

11. The electricity related device according to claim 4, wherein the multi-core cables used in the electricity related device are subjected to an aging treatment when being energized, during manufacture of the cables or the electricity related device.

12. The electricity related device according to claim 4, wherein the electricity related device is a filtering device, and the filtering device is provided with a multi-core cable or single-core cable with a length of more than 50 cm, and is configured to attenuate harmonics, ripples and noises from electric energy and/or an electrical signal.

13. The electricity related device according to claim 12, wherein a starting end and a trailing end of the cable used for filtration have unequal diameters, with the starting end having a diameter larger than that of the trailing end; or the starting end of the cable used for filtration is provided with a step-up transformer, and the trailing end of the cable used for filtration is provided with a step-down transformer; or the cable used for filtration is exposed to insulating oil; or the filtering device is provided with a filtering unit for low-order harmonics.

14. An electric energy and/or electrical signal transmission network system, comprising multi-core transmission cables for transmitting AC electric energy, DC electric energy, an electrical signal or both electric energy and an electrical signal, wherein one or part or all of the multi-core transmission cables have individual core wires used for transmission insulated from each other, with the core wires used for transmission provided in the multi-core transmission cables.

15. The network system according to claim 14, wherein within the multi-core cable used in the network system, individual core wires used for transmission are insulated from each other by adopting an insulation solution, in which surfaces of the core wires are coated with an insulating paint, or wrapped with an oxide insulation layer, or wrapped with an electrostatic coating; or insulated segments and bare wire segments are provided alternately, or bare core wires and insulated core wires are arranged alternately; or the core wires are wound with a strip-like insulator, or wrapped with a powder insulation layer, or wrapped with a release layer and an insulation layer; or a wrapped insulation layer falls off automatically after a period of time, or falls off when being rubbed by a finger; or a positioning device is used to form a spatial distance between the core wires.

16. The network system according to claim 15, wherein the insulating paint is polyurethane, or a main component of the insulating paint comprises polyurethane.

17. The network system according to claim 14, wherein an object to be transmitted by the network system is low-voltage AC electric energy.

18. The network system according to claim 14, wherein the core wires within one of the multi-core cables are conductors of a same material, or conductors of two or more different materials; or conductor materials of two or more of the multi-core cables are different; or some of the individual core wires of the multi-core transmission cables are made of any material so as to be uninsulated, and the uninsulated core wires are configured for purposes other than transmitting electric energy and/or an electrical signal.

19. The network system according to claim 14, wherein the core wires used for transmission of the multi-core cables used in the network system have a same diameter; or the multi-core cables used in the network system are of a circular cross section; or the core wires used for transmission of the multi-core cables used in the network system are of a circular cross section; or multiple core wires of the multi-core transmission cable are linearly collocated without being stranded, to form one transmission channel; or multiple core wires are in different lengths, some of multiple core wires stranded and the remaining being linear, and the stranded and the linear wires forming one transmission channel.

20. The network system according to claim 14, wherein one end or both ends of the multi-core cable is provided with a plug connector, and the plug connector is configured for connection with individual units within an electricity related device having a corresponding plug connector, or for connection with an electricity related device having a corresponding plug connector; and the multi-core cable is provided with a shielding layer, a vibration reducing layer or a filtering magnetic ring, or the multi-core cable is free of a peripheral insulation layer.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0068] FIG. 1 is a schematic block diagram of a relatively typical structure for transmitting an electric energy and/or electrical signal of an electric appliance.

[0069] FIG. 2 is a schematic block diagram of a relatively typical transmission structure of an intermediate device for electric energy and/or an electrical signal.

[0070] FIG. 3 is a schematic block diagram of a relatively typical structure of a transmission network system.

[0071] FIG. 4 is a schematic block diagram of the structure of another transmission network system.

[0072] FIG. 5 is a schematic block diagram of the structure of a further transmission network system.

[0073] FIG. 6 is a schematic cross-sectional view of a multi-core cable having core wires insulated from each other in one transmission channel, including a number of core wires 1 respectively wrapped with an insulation layer and an insulation sleeve 2.

[0074] FIG. 7 is a schematic cross-sectional view of one core wire of a multi-core cable having core wires insulated from each other, where a core wire 3 made of a conductor is wrapped over a surface thereof with an insulation layer 4.

[0075] FIG. 8 is a schematic cross-sectional view of a multi-core cable having core wires insulated from each other in more than one transmission channels, where this cable is composed of a number of transmission channels 5 and an insulating cable sleeve 2, and the transmission channel is constituted by the multi-core cable having core wires insulated from each other.

[0076] FIG. 9 is a structural schematic diagram of one core wire of a multi-core cable which has insulation layers provided in segments, where the conductor 3 is wrapped over a surface thereof with insulation layers 4 of a certain length.

[0077] FIG. 10 is a schematic cross-sectional view of a multi-core cable having core wires with an insulation layer 6 and core wires without an insulation layer 7 alternately collocated.

[0078] FIG. 11 is a structural schematic diagram of a cable used for filtration, which includes an input end 8 having a relatively bigger wire diameter and an output end 9 having a relatively smaller wire diameter.

[0079] FIG. 12 is a schematic structural diagram of a filtering device, which includes a step-up transformer 10, a step-up transformer 11 and a filtering cable 12.

DETAILED DESCRIPTION OF EMBODIMENTS

[0080] Hereinafter, embodiments of the technical solutions of the present application will be further described in conjunction with the drawings.

Embodiment 1: A Novel Use of a Cable Structure Having Insulated Core Wires

[0081] Based on the harmonic source found and confirmed by the present application, the novel use of the cable structure having insulated core wires in the present embodiment is applicable within an electricity related area, from various electric generators, electric energy and/or electrical signal transmission networks and various intermediate devices, to the internals of all sorts of electric appliances or electric appliance systems, which enables the traditional seamed transmission for an AC or DC electric energy and/or electrical signal to be converted into seamless transmission, that is, it enables bad contact and a short-circuit current resulted from the seamed transmission to be eliminated. In addition, the multi-core cable having core wires uninsulated from each other as widely used in the traditional technology are replaced with an earphone multi-core cable structure having each core wire used for transmission insulated or with a single-core cable, even other core wires used for transmission made of an electrically conductive non-metallic compound conductor should also be insulated.

[0082] It is possible to keep the current in each core wire exactly on its own path just by simply treating the surface of each core wire used for transmission, for example coating it with an insulating paint or using other insulating materials or adopting other insulating manners, with the insulation grade determined as required; and accordingly, the harmonic source, i.e., the seamed transmission, may be eliminated, which enables harmonics caused by the seamed transmission and ripples and noises induced from the harmonics to be avoided. Insulation will not be necessary for core wires that are not intended for transmission, e.g. those for tensile and bending resistance.

[0083] The basic feature of the cable structure enabling seamless transmission for an electricity related device and a transmission network system is that core wires are insulated. The basic structure is shown in FIG. 7, in which a core wire 3 is made of a conductor, with an insulation layer 4 wrapped over the surface thereof. Furthermore, the core wire may be insulated in various ways.

[0084] All insulation solutions provided in the prior art may be taken as examples of the insulation solutions for the core wire in the present application. For example, the insulation is done with a metal oxide layer. For another example, the insulation may be done with scratch-free type (straight welded type) insulating paints containing polyurethanes and having various properties. But the insulating paint has one disadvantage regarding the paint removal workload at the time of cable connection, namely, the stronger the adhesion of an insulating paint is, the larger the paint removal workload is. Directed to this problem and as further depiction of the present embodiment, more examples of insulation solutions for the core wire are supplemented below:

[0085] Supplementary example 1 of the insulation solutions for the core wire: powders capable of insulating is implemented as the insulating material used for the multi-core cable having insulated core wires. Such insulating powders form an insulation layer between the core wires. The internal multiple core wires of a multi-core cable will be naturally separated from the insulating powders, once the outermost insulation layer of the multi-core cable is stripped off with a wire stripping plier.

[0086] Supplementary example 2 of the insulation solutions for the core wire: the insulating powders capable of insulating have a certain adhesion, with the size of this adhesion confined in such a manner that the insulation layer may be removed by simultaneously rubbing several core wires with fingers.

[0087] Supplementary example 3 of the insulation solutions for the core wire: formulations of the insulating paints used in traditional products, that are known for poor quality, weak adhesion, and easy removability just by rubbing with fingers or by finger nails, are used. Such an easily removable insulation layer for the core wire does not compromise the capability of the cable in avoiding the harmonics, as the cable is further provided with a peripheral insulation layer made of such as a plastic, which can prevent the core wires from moving around so that the insulation layers for the core wires can assure that the harmonics will be avoided in normal use.

[0088] Supplementary example 4 of the insulation solutions for the core wire: resin, gel and components with an similar function are added into the insulating paint, so that the paint intends to be pulverized and fragile after it forms a film, making it easy to remove the insulating paint by rubbing with fingers.

[0089] Supplementary example 5 of the insulation solutions for the core wire: in the insulating paint is added a chemical component which could decompose after a period of time and weaken the adhesion of the insulating paint. In production, the insulating paint may be adhered onto the core wire to facilitate the manufacture, and the adhesion decreases after a certain period of time, when using a multi-core cable having core wires insulated with such an insulting paint, a user may manually strip off the insulation layer, without using any dedicated tool.

[0090] Supplementary example 6 of the insulation solutions for the core wire: an insulating paint not tolerant to temperature is used, so that the insulation layer for the core wire may be removed just by heating.

[0091] Supplementary example 7 of the insulation solutions for the core wire: multiple core wires within the multi-core cable are respectively wrapped with materials, such as a soft strip-like or band-like insulation paper or film, so that a user can manually strip off the insulation layer when using such cables, without any dedicated tool.

[0092] Supplementary example 8 of the insulation solutions for the core wire: the core wires within the multi-core cable are treated twice. Specifically, these core wires are firstly wrapped with a material capable of releasing, and then coated with an insulating paint. With such a technology, the insulation layer may be easy to strip off, just like a coat.

[0093] Supplementary example 9 of the insulation solutions for the core wire: the insulation layer is provided in segments.

[0094] As shown in FIG. 9, the insulation layer 4 for the core wire within the multi-core cable ends after running axially along the multi-core cable for a certain length, followed by a bare metallic core wire 3 of a certain length, and then followed by the insulation layer 4 again. Within one multi-core cable, the bare segments and the insulation layers for each core wire have an identical length, with the bare segments of all the core wires adjacent to each other, so are the insulated segments. The insulation layers and the bare segments may respectively have any lengths, as long as both the insulating effect and the convenience for connection between wire ends may be guaranteed, for example, 10 millimeters of the bare segment, and 90 millimeter of the insulated segment and so on. The bare segments serve for joining.

[0095] Supplementary example 10 of the insulation solutions for the core wire: part or all of the multi-core cables traditionally used in the electricity related device are replaced with a single-core cable having a plastic insulation layer that is produced by a current technology, where a connection operation for such a single-core cable does not affect people's using habits. In order to improve the usability, a cable may be in the form of a spring by winding it around a spool, that is, similar to a connection cable between the transmitter and the body of a landline telephone.

[0096] Supplementary example 11 of the insulation solutions for the core wire: multiple single-core cables with a plastic insulation layer that are produced in accordance with a current technology are directly combined into one multi-core cable, where a connection operation for ends of this multi-core cable does not affect people's using habits.

[0097] Supplementary example 12 of the insulation solutions for the core wire: a wire is made of a plastic material, with multiple core wires packaged therein. The plastic material is easy to remove.

[0098] Supplementary example 13 of the insulation solutions for the core wire: a multi-core cable has bare and insulated core wires alternately collocated. As shown in FIG. 10, some core wires 6 are wrapped with an insulation layer, whereas some other core wires 7 are not wrapped with an insulation layer. By alternate collocation, they constitute a multi-core cable structure having all core wires insulated from each other. The core wires without the insulation layer make the workload on connection to be reduced.

[0099] Supplementary example 14 of the insulation solutions for the core wire: a mature electrostatic spraying technology is used to form an insulation layer on the core wire.

[0100] Supplementary example 15 of the insulation solutions for the core wire: a mature oxidization insulation technology is used to form an insulation layer on the core wire.

[0101] Supplementary example 16 of the insulation solutions for the core wire: a positioning device is used to form a spatial distance between the bare core wires.

[0102] The above-mentioned supplementary examples may improve the usability of the multi-core cable having core wires insulated from each other, and make it easy to join wire ends and connect a wire end with a connecting terminal of an electricity related device.

[0103] On the basis of achieving transmission purpose and core wire insulation, the cable structure enabling seamless transmission further has the following subsidiary features:

[0104] The seamless transmission has no special requirement on conductor materials. It is experimentally verified in the present application that harmonics produced in a multi-core cable may be avoided by mutual insulation between the core wires rather than the nature of a conductor material, and thus the original selection criteria for the conductor material may remain as it is, or even be lowered. The harmonics resulted from the seamed transmission may be avoided only when the individual core wires used for transmission each are insulted, no matter whether thus core wires are made of a high-end conductor, such as silver, superconducting material or single crystalline conductor, or made of copper, aluminum or an alloy, with no exception. In addition, the core wires within one of the multi-core cables may be conductors of a same material, or conductors of two or more different materials, or conductor materials of two or more of the multi-core cables may be different from each other. As a subsidiary structure of the cable, some of the individual core wires of the multi-core transmission cables may be made of any material so as to be uninsulated, and the uninsulated core wires are configured for purposes other than transmitting the electric energy and/or electrical signal.

[0105] A subsidiary unit is added. For example, one end or both ends of the cable is provided with a plug connector, and the plug connector is configured for connection with individual units within an electricity related device having a corresponding plug connector, or for connection with an electricity related device having a corresponding plug connector; and the multi-core cable is provided with a shielding layer, a vibration reducing layer or a filtering magnetic ring, or the multi-core cable has one or more transmission channels and is free of a peripheral insulation layer.

[0106] All the core wires of one cable have a same diameter. The diameter of each core wire may be determined as in the traditional technology, or as required by an object to be transmitted, that is, both a large diameter and a small diameter are acceptable. Moreover, among the core wires, there may also be any number of core wires with different diameters.

[0107] Both the multi-core cable constituted by multiple core wires collocated together and each of the core wires may have a cross section in any geometrical shape, e.g. circular, elliptical, hollow annular, hollow discontinuous annular and flat.

[0108] The seamless transmission has no requirement on whether the core wires of a multi-core cable are stranded or not. Multiple core wires may be stranded to form one transmission channel; or multiple core wires of the multi-core transmission cable are linearly collocated without being stranded, to form one transmission channel; or multiple core wires are in different lengths, with part of the multiple core wires stranded and the remaining being linear, and the stranded and the linear wires forming one transmission channel.

[0109] The number of the core wires within the multi-core cable may be determined as in the traditional technology, or as required by an object to be transmitted.

[0110] As for a multi-core cable having core wires insulated from each other, the peripheral insulation layer may not be provided therefor as the core wires are already insulated. Of course, it can also be done as the traditional technology, depending on usage requirements.

[0111] Besides the above-mentioned multi-core cable having core wires insulated from each other, the seamless transmission may also be realized with a single-core cable. The single-core cable has a disadvantage of poor flexibility, but the flexibility may be improved by winding the single-core cable to form a tubular cable of a spring structure, just like the transmitter connection wire of a landline telephone. Although this costs more consumables, a certain filtering effect may be achieved (see the following filter). A multi-core cable having a relatively poor flexibility may also be wound to form a tubular cable.

[0112] The requirement on manufacturing the multi-core cable with insulated core wires necessary for the seamless transmission is less strict. As long as the transmitted current is restrained from stepping over a gap between the core wires, the insulating materials, insulation modes and production technology for the core wires may be selected arbitrarily and may vary in any way.

[0113] If the multi-core cable enabling seamless transmission is used, the joining of its wire ends or its connection with a connecting terminal of an electricity related device may be done with any solution in the traditional technology, e.g. by use of a plug connector, a hinged connection, welding, riveting, glue, screws, bolts and nuts, once the insulation is removed. As in the traditional technology, a direct-welded type insulating paint enables the insulation to be removed simultaneously with the connection.

[0114] The seamless transmission does not have a single adverse effect on the quality of electric energy and/or an electrical signal, nor does it bring any negative influence to the original performance, usage and the like of an electricity related device. As for safety, the insulation for the core wires enhances the safety of the multi-core cable.

[0115] Compared with the seamed transmission, the seamless transmission has an instant energy saving effect, but the remarkable effect regarding quality will not show until the wire has been aged for a certain period of time. The more the aging degree of a cable is, the more the harmonics and ripples and noises induced from the harmonics vanish, and the higher the transmission quality of the electric energy and/or electrical signal is. For example, the quality of the TVs and the digital power amplifier is still improved continuously even after 2,000 hours of aging by natural use, as described above. In order to improve the outgoing quality of products, the cables may be subjected to an aging treatment during the manufacture of electricity related devices. A cable may be aged with an alternating or direct current having different frequencies and different sizes which pass through the cable separately or alternately, or the aging may be accelerated by means of a large temperature change of the environment or the cable while the cable is energized.

[0116] The effect of seamless transmission depends on the number of the cables being replaced. Multi-core cables required for transmission in the traditional technology may all be replaced to have core wires enabling seamless transmission, so as to obtain the best effect; alternatively, only a part of them may be replaced, or even the seamless transmission may be realized only in one or more long or short cables, to obtain a certain effect. All these as mentioned above fall within the scope of protection of the present application.

[0117] Certain terms in the present application documents have the following meanings:

[0118] The term wire as used in the present application has the same meaning with terms such as electric cable, electric wire, cable, conductor, wire cable, transmission wire, connection wire, jump wire and jumper. A single-core cable is distinguished from a multi-core cable based on the number of metallic core wires constituting one transmission channel. Specifically, a cable for which one transmission channel is constituted by two or more core wires is a multi-core cable, and a cable for which one transmission channel is constituted by one core wire is a single-core cable. Experiments show that both the cable structures, i.e. the single-core cable and the multi-core cable having core wires insulated from each other, have the same effect of avoiding harmonics. In the present application, the single-core wire refers to a cable having only one core wire, whereas the multi-core cable refers to a cable for which two or more core wires are gathered together to form one transmission channel. Under the same wire diameter, the single-core cable has a relatively poorer flexibility. Thus, multi-core cables are widely applied to various electricity related devices. As shown in FIGS. 6, 7 and 8, the core wire 3 is made of a conductor, and then wrapped with an insulation layer 4. Thus, it may be used as a single-core cable, or several such core wires wrapped with an insulation layer may be combined as a multi-core cable enabling seamless transmission.

[0119] The multi-core cable may have many kinds of structures in which: multiple core wires are stranded or un-stranded; several single-core cables, although being dispersive in pattern, are practically used commonly as one transmission channel; and Milliken conductors for one transmission channel are constituted in such a manner that multiple groups are firstly formed with each group constituted by multiple core wires uninsulated from each other, and then the multiple groups are collocated and insulated from each other. Besides a conductor core wire used for transmission purpose which is used as the main body of the cable, the multi-core cable may have cable accessories for other purposes, e.g. a tensile resistant core wire, a shielding layer, a magnetic ring, a shock-proof material, a filler, a fixture, an insulation layer and a plug connector. These cable structures may be named as for example twisted pair, flat cable, VGA cable, USB cable, HDMI cable, signal transmission cable and electric cable, among which some have only one transmission channel for one cable, and some have two or more transmission channels for one cable, but they all fall within the range of multi-core wires or multi-core cables or multi-core transmission cables as described in the present application. The structure as shown in FIG. 8 is a multi-core cable constituted by several transmission channels 5 and an insulating sleeve 2, in which each transmission channel is constituted by multiple core wires insulated from each other.

[0120] The term harmonic as described in the present application further includes ripples and noises, in addition to harmonics, if the ripples and noises induced from the harmonics exist in the electric energy and/or electrical signal being transmitted.

[0121] The term current as described in the present application refers to electric energy and/or an electrical signal.

[0122] The term electric energy as described in the present application includes: an AC or DC electric energy of different frequencies that are transmitted or transformed within a grid and an electricity related device; an AC or DC electric energy obtained through self-power-generation by a mains end user with oil or other energy resources; an uninterrupted power supply (UPS); a battery; and the like.

[0123] The term electrical signal as described in the present application refers to a current already loaded with information, including low and high frequency signals, audio and video signals, analog and digital signals, sine wave and square-wave signals, alternating current and direct current signals and the like, which are classified from different perspectives.

[0124] The expressions in an insulated state, insulated from each other or insulated regarding the core wires as described in the present application do not mean that each of the core wires requires an insulation layer. As shown in FIG. 10, if the solution where core wires without an insulation layer 7 and core wires with an insulation layer 6 are alternately collocated is used for a multi-core cable, the individual core wires of the multi-core cable are in an insulated state, as bare core wires, though without an insulation layer, are separated by those core wires with an insulation layer. The insulating strength of the core wire as required by the seamless transmission depends on the requirements of different objects to be transmitted, with the basic requirement that the object being transmitted is completely precluded from stepping over a gap between the core wires.

[0125] The technical features of the present embodiment are also applicable to the following embodiments.

Embodiment 2: Electricity Related Device

[0126] The term electricity related device refers to, other than electric energy and/or electrical signal transmission network systems, all devices involving electric energy and/or an electrical signal, including an electric generator, electric energy and/or an electrical signal control device, an electric appliance (a loudspeaker, a voice box, a carrying tool, a production apparatus, a medical apparatus, a household electric appliance and a wireless transmission system), an intermediate device etc. In the present application documents, the term electricity related device refers to not only an independent device having a single function, but also a system composed of more than two independent devices, e.g. a car.

[0127] The electricity related device as shown in FIG. 1 and the electric energy and/or electrical signal distribution device as shown in FIG. 2 are merely exemplary. Referring to FIG. 1, after electric energy is input, it passes through a transformer or a switching power supply or an intelligent power processing unit, to supply designated voltages and currents respectively to a signal processing unit and functional units a and b, and to output a designated voltage and current to the outside. In this case, functional unit a receives a signal from the signal processing unit and feeds back a signal to the signal processing unit, thereby fulfilling its function, whereas functional unit b only consumes the electric energy, for example, it may be a power indicator. Specific electricity related devices may have many variants and wide varieties. It may only have functions a and b as shown in FIG. 1, or only one function as shown in FIG. 2, or have several other functions, or have further more kinds of transmission cables, or only have one or two kinds of cables as shown in FIG. 2. The electricity related device as shown in FIG. 1 includes external electric energy input and output cables, an internal electric energy transmission cable, an external signal input and output cables, and an internal signal transmission cable. These cables generally adopt various types of multi-core cables having core wires uninsulated from each other, and they are either fixedly connected with an electricity related device, or form an independent one if being connected through a plug device, e.g. they may form a flat cable. Any electricity related device can use the multi-core cable having core wires insulated from each other for part or all of the cables used in this device, despite their lengths, how many channels they have, what they transmit or how the flow is, so as to avoid harmonics from being produced by the seamed transmission, save electric energy, and improve the working quality.

[0128] For further features of the technical solution in which the core wires are insulated from each other in the present embodiment, reference may be made to embodiment 1 which constitutes a part of the present embodiment.

Embodiment 3: Power Generating Apparatus

[0129] A power generating apparatus is an electricity related device, which includes all devices that transform energies in other forms into electric energy. As for the power generating apparatus, it is not confined in terms of the structures thereof, that is, it may be one equipped with an automatic signal control device, or a common automotive generator; it is not confined in terms of the generated power, that is, it may range from a high-rating generator in a power plant or a power station to a mini generator of a few watts, and to an even smaller hand generator; and it is not confined in terms of the circumstances under which it is used, that is, it may range from a stationary generator set to a mobile automotive generator. If they partially or entirely use multi-core cables having core wires insulated from each other, it is possible to avoid harmonics from being produced by the seamed transmission and improve their power generating efficiency and working quality.

[0130] For further features of the technical solution in which the core wires are insulated from each other in the present embodiment, reference may be made to embodiment 1 which constitute a part of the present embodiment.

Embodiment 4: Electrical Appliance

[0131] An electrical appliance is an electricity related device. It is a terminal of electric energy and/or electrical signals, and includes all devices which fulfill their own specific functions by consuming and utilizing electric energy and/or electrical signals, e.g. a great variety of machine tools, instruments and meters, induction heaters, electric smelting furnaces, radars, elevators, robots, monitoring devices, luminaire, medical appliances and household appliances. Such devices could either be an electric appliance having a single function, or an electric appliance system which is composed of multiple electric appliances and has a single or multiple functions.

[0132] Various kinds of multi-core cables used for transmitting electric energy and/or electrical signals between electric appliances or within an electric appliance itself are very important, because although harmonics coming from afar would be attenuated in some extent, multi-core cables having bare core wires that are close to the electric appliance or used within the electric appliance produces new harmonics, which not only waste electric energy accompanied by production of heat, but also further induce ripples and noises, which influence the quality of electric energy and/or electrical signals and are so fierce that they directly influences the performance of the electric appliance, as proved in the experiments. In the present embodiment, multi-core cables having core wires insulated from each other or single-core wires are adopted for part or all of electric energy and/or electrical signal transmission paths between electric appliances and within an electric appliance itself.

[0133] Taking a smelting furnace as an example, no matter what type the smelting furnace is, the cable for power distribution has a certain length, and its normal state is to transmit electric energy with full load. In such a case where there is a long path and a high current with full load, traditional multi-core cables are highly prone to producing a great amount of harmonics, which waste electric energy. A considerable energy saving efficiency may be obtained just by replacing more than one cables therein with cables having core wires insulated from each other.

[0134] Taking a traditional common audio power amplifier and a TV as an example, they use at many positions multi-core cables having core wires uninsulated from each other to transmit electric energy and/or electrical signals, for such as power supply (transformer) management and distribution, audio source management and distribution, connection for individual units, connection for various control and display components, input and output connection for electric energy and/or electrical signals. In such a case, there may be a jumper as a single transmission channel, or a flat cable having multiple collocated transmission channels, or other multi-core cables which are provided as required and have USB and HDMI cables for input and output. If they are partially or entirely replaced with multi-core cables having core wires insulated from each other or single-core cables, the playback quality may be improved.

[0135] Taking an air conditioner as an example, it adopts at multiple positions multi-core cables having core wires uninsulated from each other to transmit electric energy and/or electrical signals. If such cables are replaced partially or entirely to adopt the above insulation solutions for the core wires, harmonics may be reduced, thus reducing heat from the cables, noises and the electric motor, reducing faults, and prolonging the lifetime, and saving electric energy.

[0136] Taking a camera type medical endoscope as an example, it adopts at multiple positions multi-core cables having core wires uninsulated from each other to transmit electric energy and/or electrical signals. If the multi-core cables of a master machine, for example, a connection cable between a camera and the master machine, and for another example, a connection cable between a receiving end of a wireless capsule endoscope and the master machine, are partially or entirely replaced with multi-core cables having core wires insulated from each other, it is possible to improve the image quality and provide more image details. For an medical endoscope, this means higher possibility of discovering more clues to diseases, or means finer surgical procedures.

[0137] Taking an electric welding machine as an example, it is a low voltage and high current electric appliance, with a large wire diameter and a relatively long transmission distance. If using multi-core cables which has core wires insulated from each other and enables seamless transmission, the electric welding machine may show a more significant energy saving effect.

[0138] Taking a loudspeaker and a microphone as an example, both of them are electric appliances. Regardless of their size, they all have connection cables between a connecting terminal and pickup and sound production parts, which may be replaced with multi-core cables having core wires insulated from each other. Although such cables are not long, newly noises produced by bare core wires would influence the sound quality without attenuation, as these cables are close to the pickup and sound production parts. A high current woofer is more prone to such influence. Though an earphone speaker has a low current, the damage from a small amount of fresh noises would easily compromise the listening experience, as it is used near ears. It is worse for mid- and high-end earphones. An electrostatic loudspeaker requires an external power supply and a large current, and thus produces a high noise; however, if the fresh noise is removed, its original low distortion rate could be further decreased.

[0139] Taking a Hi-Fi audio as an example, one of the features of high fidelity is that the signal source, the amplifier and the voice box are separated. From a general view about the current status of research on Hi-Fi transmission cables, the focus is on the connection cables between the instruments, rather than on the transmission cables inside the instrument. It is experimentally proved that new noises produced by a transmission cables inside the instrument would have a direct influence on the playback effect. As long as part or all of the multi-core cables within each instrument, including those used for electric energy and/or electrical signals, and for audio input and management, especially those from the connecting terminal of the voice box to the terminal of the loudspeaker and those from the terminal of the loudspeaker to the sound production parts of the loudspeaker which are ignored previously, are replaced with the multi-core cables having core wires insulated from each other and made of an ordinary material, it is possible to substantially improve the audio performance once the cables are aged, so as to obtain a more natural and realistic replay effect compared with the case where the multi-core cables having bare core wires are used. It is additionally indicated that the reason a speaker cable being particular about materials lies in that a good transmission performance of a conductor enables a short circuit current resulted from the seamed transmission to be reduced; and the reason for selecting a large diameter lies in that it is necessary to make a high current, when being transmitted, still appear to be a small load for an extremely large wire diameter, which may also enable harmonics resulted from a wire-to-wire short circuit between bare core wires to be reduced. However, the seamless transmission does not require a large wire diameter, nor does it require a particular material.

[0140] A common voice box may be seen everywhere, e.g. beside a computer, on a desk, inside a car, built-in a TV, in a cinema, in indoor and outdoor performance venues, and background music players, and the list goes on. Due to cost control, they either have no filtering capacity, or have an extremely limited filtering capacity, and thus suffer from great extraneous interference; in addition, they further suffer from harmonics newly produced by the seamed transmission as disclosed in the present application, the original solution of low cost fails to achieve a good effect. Seamless transmission may be applied to part or all of them, so as to achieve a higher cost performance at a low cost.

[0141] Taking a numerically-controlled modular machine tool as an example, it integrates and controls a plurality of components by means of various multi-core transmission cables for electric energy and/or electrical signals. If part or all of these transmission cables are replaced with the multi-core cables having core wires insulated from each other, that is, if the solution of seamless transmission is adopted, it is possible to improve the quality of the numerically-controlled machine tool in terms of energy consumption, accuracy and reliability.

[0142] For further features of the technical solution in which the core wires are insulated from each other in the present embodiment, reference may be made to embodiment 1 which constitute a part of the present embodiment.

Embodiment 5: Carrying Tool

[0143] In the present application, sea, land and air transport devices for carrying people or things are all carrying tools, and also belong to electricity related devices. A carrying tool is an independent system, and many sub-systems thereof are electric appliances, e.g. an electric energy driving system, a fuel ignition system, an autopilot system, a navigation system, a window lifting system, a communication system, a monitoring system, and a lighting system, and furthermore, each sub-system further includes several electric appliances. The carrying tool is either equipped with its own power supply, or carries various types of batteries or power generating devices utilizing various energies. The point about applying the seamless transmission to the entire system of the carrying tool, including the smallest electric appliance therein, is that it saves electric energy, improves the endurance capability, improves the electric energy and/or electrical signal transmission quality and the working quality of electric appliances, and increases the safety factor.

[0144] For further features of the technical solution in which the core wires are insulated from each other in the present embodiment, reference may be made to embodiment 1 which constitutes a part of the present embodiment.

Embodiment 6: Wireless Transmission System

[0145] The range of application of wireless transmission keeps extending. Specifically, remote control devices, wireless internet of things and long-distance wireless meter reading have become reality, and a smart home solution is also achieved under a wireless mode. In addition, the object to be transmitted is currently extended from an electrical signal to electric energy. Wireless transmitting and receiving ends also are electricity related devices, and they also have multi-core cables. If the seamed transmission is applied, harmonic interference would be produced which compromises the transmitting or receiving quality. In view of this, the wireless transmitting and receiving ends may be partly or entirely applied therein with the seamless transmission.

[0146] For further features of the technical solution in which the core wires are insulated from each other in the present embodiment, reference may be made to embodiment 1 which constitutes a part of the present embodiment.

Embodiment 7: Intermediate Device

[0147] An intermediate device is defined in the present application documents as various devices between electric energy and/or electrical signals and an electric appliance, which do not use the electric energy and/or electrical signals themselves and serve the electric appliance. They are electricity related devices.

[0148] Main functions of the intermediate device include for example continuation, conversion, relay, switching, distribution or control of electric energy and/or electrical signals. The intermediate device could be, for example, an energy storage station, a large-scale or micro charging device, an electricity storage device, a transformer substation, a converter station, a converter, a transformer, a connector, various connection cables, a coupler, a transducer, an inverter, a rectifier, a filter, a reactive power compensation device, a combined device connecting the mains electricity and receptacle power socket of an electric appliance, an electric energy and/or electrical signal distributor, an electric energy and/or electrical signal control system, an electric energy and/or electrical signal pivot system.

[0149] As for an intermediate device using multi-core cables, if the seamless transmission solution is adopted for part or all of thus multi-core cables, it is possible to avoid the harmonics produced by the device itself from mixing with the electric energy and/or electrical signals being processed by the device.

[0150] Taking an independent filter as an example, it is responsible for filtration. If its power output cable or a connection cable from a filtering unit to an output terminal adopts the seamed transmission, even an extremely good filtering quality would be compromised, whereas adopting the seamless transmission can gain beneficial effects.

[0151] Taking a charger as an example, if the seamless transmission is applied to the input and output of a charger for e.g. a cellphone, a portable electric appliance, an electric bicycle and an electric automobile, electric energy can be saved.

[0152] Taking a power socket as an example, as shown in FIG. 2, it has one or more output interfaces a through d, and draws power from the grid via multi-core power cables having a length of 1 meter to several meters. When a nominal current passes through the power cable of the socket, the seamed transmission would cause several percent points of electric energy to become harmonics, which is a waste of electric energy. If the current is below the nominal standard, still, the seamed transmission would result in a certain amount of harmonics, and these harmonics would has the most influence on the working quality of an electric appliance as they are closest to the electric appliance. Moreover, when there is a current passing through the cable of the socket, the harmonics produced by the seamed transmission cause the surface of the core wire, which is an excellent transmission channel, to be wasted. Thus, if the solution of seamless transmission is applied for the power input cable of the socket itself and the multi-core cables within the socket, it is possible to avoid the harmonics and save electric energy, and furthermore, it is possible to regain the transmission channel on the surface of the core wire, which is previously occupied by the harmonics, reduce heat production, provide a more reliable safety control or maintain the original transmission efficiency with a relatively small wire diameter, and to reduce wires consumed by the socket.

[0153] For further features of the technical solution in which the core wires are insulated from each other in the present specific embodiment, reference may be made to embodiment 1 which constitutes a part of the present specific embodiment.

Embodiment 8: Filtering Device

[0154] Most harmonic components in electric energy and/or electrical signals are high-frequency currents. The present device is manufactured according to the acknowledged principle that the energy of a high-frequency current will be attenuated with the increase of the transmission distance, with the feature that the current is made to pass through a cable of a certain length after the electric energy and/or electrical signal is input, and then is output after high-order harmonics are attenuated in some extent. The length of the cable of the filter for attenuating the high-frequency current depends on the degree of contamination of the electrical signal of the power supply and the requirements of the electric appliance. Specifically, the higher the desired purity of the electrical signal of the power supply is, the longer the length of the cable used for filtration is. Generally, a transmission distance of 50 cm can just show a filtering effect. This device may be made as an independent device external to an electric appliance; alternatively, one or more units may be provided inside the electric appliance, in this case, an input cable of a certain length may be provided ahead of an input end of a certain unit in the electric appliance which requires an relatively pure electric energy and/or electrical signal. Such cables may be brought together in various ways, so as to save and adapt to the space in which they are located, and the conductor of the cable can be made of any material.

[0155] If a solution where attenuation and filtration are realized under a long distance of over 10 meters is adopted, two structures respectively having a varying diameter and a varying voltage may be used, in order to assure a nominal current, save wires and reduce the size of the filter. The varying diameter means that the input end of the cable is provided with a diameter required by a current higher than the nominal current. As shown in FIG. 11, the diameter of the output end is just the diameter required by the nominal current. This means that the diameter of the input end 8 is larger than that of the output end 9. Thus, a nominal current-carrying capacity may be guaranteed, and the material for cable may also be reduced. As shown in FIG. 12, the varying voltage means that a step-up transformer 10 is provided at the input end for stepping-up the current, and a step-down transformer 11 is provided at the output end for stepping-down the voltage. Provision of such step-up and step-down transformers enables the diameter of the cable 12 used for filtration to be reduced, thus reducing the size of the filter and the material consumed by the cable.

[0156] The multi-core wire having core wires insulated from each other or a single-core wire is used as the cable of this device. Besides the option of the technical features relative to core wire insulation in the present application, reference may also be made to the structure of a transformer for the insulation method, to learn from the principle that the transformer uses an insulation oil. Manufacturing a filter using such an insulation method not only reduces the size of the filter, but also makes it easy for heat radiation.

[0157] The main function of the device is to make high-order harmonics naturally attenuated. Such device can be combined with the prior art directed toward low-order harmonics, for achieving high-quality electric energy and/or electrical signals.

[0158] This device overcomes the disadvantages of existing filters and filtering circuits, such as new harmonics produced by themselves, or limited power (especially transient power), or high costs. This device makes original harmonics from the grid naturally attenuated during the seamless transmission over a specific distance, and both the filtering process and output produce no new harmonics.

[0159] For further features of the technical solution in which the core wires are insulated from each other in the present embodiment, reference may be made to embodiment 1 which constitutes a part of the present embodiment.

Embodiment 9: AC and/or DC Electric Enemy Transmission Network System

[0160] An electric energy transmission network system in the present application documents refers to a network having a long transmission distance of over 3 meters and more than 3 electricity related devices connected through multi-core cables. The structure of such a network has at least the types as shown in FIGS. 3, 4 and 5. As shown in FIG. 3, the electricity related devices are connected one by one. As shown in FIG. 4, the electricity related devices are connected a closed loop form. As shown in FIG. 5, the electricity related devices are connected in a tree form. They can be used to transmit simply electric energy or along with an electrical signal. The transmission direction can be one-way or two-way or both of them.

[0161] The object to be transmitted by the electric energy transmission network system is an AC and/or DC electric energy, involving ultra-high voltage power transmission, high voltage power transmission, medium voltage power transmission and low voltage power transmission, etc. In the present application documents, a high voltage transmission network system is an electric energy transmission network system from an electric generator to a transformer nearest to a user who needs the electric energy. A low voltage transmission network system is defined in the present application as a low voltage distribution network system from a transformer, which is at the very end of the network and nearest a user who needs the electric energy, to various electric appliances of the user.

[0162] Among the transmission paths between an electric generator, a power supply and a terminal electric appliance, there are a pure alternating current transmission network, a pure direct current transmission network, and a network in which an alternating current network and a direct current network are used in mixture.

[0163] Part of all of the traditional multi-core cables as used in a large amount in a traditional power transmission system may be replaced with those realizing seamless transmission, which provide the effects of avoiding harmonics and the harms thereof, provide pure electric energy, reduce wire losses, reduce faults and accidents of the system itself, reduce filtering devices, lower operation costs, and provide a purified channel for power line carrier communication, remote meter reading and home intelligent systems.

[0164] The seamless transmission produces different energy saving effects in high voltage and low voltage transmission network systems. The reason lies in that, under the same flow, the amounts of current converted into harmonics in both the high voltage and low voltage transmission network systems are substantially equal, this current part has a higher percentage in the total electricity amount as transmitted in the low voltage transmission network system than in the high voltage transmission network system, and hence, it is the low voltage transformer power transmission and distribution network near an electric appliance that has a more significant energy saving effect. Based on the same reason, the energy saving effect of a network at 110 V is better than that of a network at 220 V.

[0165] For further features of the technical solution in which the core wires are insulated from each other in the present embodiment, reference may be made to embodiment 1 which constitute a part of the present specific embodiment.

Embodiment 10: Electrical Signal Transmission Network System

[0166] An electrical signal transmission network system in the present application documents refers to a network having a long transmission distance of over 3 meters, and more than 3 electricity related devices connected through multi-core cables. Along the transmission paths, there are both wireless devices and wired devices. For example, the electrical signal transmission networks may be used for such as mobile communication servicing cellphone users, intelligent devices, numerically-controlled modular machine tools, medical diagnostic devices, live sound reinforcement, live telecasting, studios, audio-video monitoring, computer rooms, multimedia control systems, telecommunication systems and monitoring systems composed of a plurality of sensors.

[0167] The structure of the electrical signal transmission network system has at least the types as shown in FIGS. 3, 4 and 5. As shown in FIG. 3, the electricity related devices are connected one by one. As shown in FIG. 4, the electricity related devices are connected a closed loop form. As shown in FIG. 5, the electricity related devices are connected in a tree form. They can be used to transmit simply electric energy or along with an electrical signal. The transmission direction can be one-way or two-way or both of them.

[0168] For further features of the technical solution in which the core wires are insulated from each other in the present embodiment, reference may be made to embodiment 1 which constitutes a part of the present embodiment.