Ribbon cables including a plurality of spaced apart substantially parallel conductors extending along a length of the cable and arranged along a width of the cable, and first and second insulative layers disposed on opposite sides of and substantially coextensive with the plurality of conductors along the length and width of the cable are described. Each insulative layer may be adhered to the conductors and may include alternating substantially parallel thicker and thinner portions extending along the length of the cable. The thicker portions of the first and second insulative layers are substantially aligned in one to one correspondence. Each corresponding thicker portion of the first and second insulative layers have at least one conductor in the plurality of conductors disposed therebetween. The thicker portions may have an effective dielectric constant less than 2.

The invention relates to an electrically and thermally conductive element (100) comprising:—a wire or ribbon (1) of high-purity aluminium;—a strip (2) of pyrolytic graphite or of graphene extending along the aluminium ribbon (1), said wire or ribbon (1) and the strip (2) being encapsulated together in a sheath (3) of an electrically insulating material.

It is aimed to provide a communication cable which includes a solid sheath on an outer periphery of a signal cable having a plurality of insulated wires and in which transmission characteristics hardly decrease due to a pressure in extrusion-molding a sheath. A communication cable 1 is provided with a signal cable 10 including a plurality of insulated wires 11 each having a conductor 12 and an insulation coating 13 covering an outer periphery of the conductor 12, and a solid sheath 20 covering an outer periphery of the signal cable 10. A melt flow rate of a constituent material of the sheath 20 measured at 200° and with a load of 2.16 kg is 0.25 g/10 min. or more.

It is aimed to provide a communication cable which includes a solid sheath on an outer periphery of a signal cable having a plurality of insulated wires and in which transmission characteristics hardly decrease due to a pressure in extrusion-molding a sheath. A communication cable 1 is provided with a signal cable 10 including a plurality of insulated wires 11 each having a conductor 12 and an insulation coating 13 covering an outer periphery of the conductor 12, and a solid sheath 20 covering an outer periphery of the signal cable 10. A melt flow rate of a constituent material of the sheath 20 measured at 200° and with a load of 2.16 kg is 0.25 g/10 min. or more.

The present invention relates to a cooled charging cable for an electric vehicle, and the purpose of the present invention is to cool a power line by circulating, through a cooling tube or a refrigerant fluid channel, high-temperature heat generated in the power line when a large-capacity current required for rapid charging is continuously applied to the power line, and arrange the cooling tube or refrigerant fluid channel in a shaping material filled in the cable to cool the power line through a wider surface area in an indirect heat transfer method, so as to enhance the cooling efficiency while preventing the pipe or channel from being in direct contact with the power line, thereby preventing an insulation layer thereof from being deteriorated, damaged, or destructed due to the refrigerant. The cooled charging cable for an electric vehicle according to the present invention comprises: a cable part; at least one conductive part surrounding the outer surface of the cable part; at least one cooling part disposed in the conductive part; and an outer sheath surrounding the cable part and the outer surface of the conductive part.

The present invention relates to a cooled charging cable for an electric vehicle, and the purpose of the present invention is to cool a power line by circulating, through a cooling tube or a refrigerant fluid channel, high-temperature heat generated in the power line when a large-capacity current required for rapid charging is continuously applied to the power line, and arrange the cooling tube or refrigerant fluid channel in a shaping material filled in the cable to cool the power line through a wider surface area in an indirect heat transfer method, so as to enhance the cooling efficiency while preventing the pipe or channel from being in direct contact with the power line, thereby preventing an insulation layer thereof from being deteriorated, damaged, or destructed due to the refrigerant. The cooled charging cable for an electric vehicle according to the present invention comprises: a cable part; at least one conductive part surrounding the outer surface of the cable part; at least one cooling part disposed in the conductive part; and an outer sheath surrounding the cable part and the outer surface of the conductive part.

An insulated electrical wire is provided. The insulated electrical wire includes a conductor and an insulating film including pores. The insulating film at least includes a first insulating layer. The first insulating layer includes a first center region, a first inner side region, and a first outer side region. The first center region is a center region in the first insulating layer in a thickness direction and is formed of an insulating material and first pores that are the pores. The first pores are derived from a liquid thermally decomposable polymer. The first inner side region and the first outer side region are formed not to include the first pores.

A composite cable includes a plurality of internal cables and a covering member covering peripheries of the plurality of internal cables. At least one of the plurality of internal cables includes at least one electric wire having a conductor, a first sheath covering a periphery of the at least one electric wire, a shield covering a periphery of the first sheath, and a second sheath covering a periphery of the shield.

A composite cable is provided with a coaxial wire and an insulated wire. The coaxial wire includes a center conductor, a first insulation covering the center conductor, and plural outer conductors arranged on an outer periphery of the first insulation, and a jacket covering the plural outer conductors. The insulated wire includes a stranded conductor including plural strands twisted together, and a second insulation covering the stranded conductor. The center conductor of the coaxial wire is a single wire. A conductor diameter of the center conductor is not more than a wire diameter of each of the plural strands of the insulated wire.

A composite cable is provided with a coaxial wire and an insulated wire. The coaxial wire includes a center conductor, a first insulation covering the center conductor, and plural outer conductors arranged on an outer periphery of the first insulation, and a jacket covering the plural outer conductors. The insulated wire includes a stranded conductor including plural strands twisted together, and a second insulation covering the stranded conductor. The center conductor of the coaxial wire is a single wire. A conductor diameter of the center conductor is not more than a wire diameter of each of the plural strands of the insulated wire.