A self-generating power supply apparatus includes a power generating body, an energy harvester, and a power consumer. The power generating body generates an electromagnetic field when a force is applied, an energy of the electromagnetic field is received by the energy harvester and subsequently transferred to the power consumer; or alternatively, the energy harvester is not provided and the energy of the electromagnetic field is directly received and used by the power consumer. The energy of the electromagnetic field is harvested by the energy harvester contacting or not contacting the power generating body, and then is converted into electrical energy, which is transferred out in a wired or wireless manner to enable self-generating power supply for the apparatus. The self-generating power supply apparatus has an immeasurable impact on the development in the fields such as wearable devices, small mobile communication devices, Internet of Things, new energy etc.

A wireless power system for an implantable device is described. The system includes multiple inductive charging coils to increase an effective area for receiving an electromagnetic charging field from a wireless charging device. The multiple inductive charging coils produce different alternating current signals in response to receiving the electromagnetic charging field. The system includes a rectifying circuit for rectifying the alternating current signals into direct current signals. The system also includes a current combination circuit for combining the multiple direct current signals into a single direct current for powering an operation of the implantable device. Methods and devices for implementing the power system in an implantable device are also described.

A method is provided for producing an electrically-powered device and/or component that is embeddable in a solid structural component, and a system, a produced device and/or a produced component is provided. The produced electrically powered device includes an attached autonomous electrical power source in a form of a unique, environmentally-friendly structure configured to transform thermal energy at any temperature above absolute zero to an electric potential without any external stimulus including physical movement or deformation energy. The autonomous electrical power source component provides a mechanism for generating renewable energy as primary power for the electrically-powered device and/or component once an integrated structure including the device and/or component is deployed in an environment that restricts future access to the electrical power source for servicing, recharge, replacement, replenishment or the like.

A method is provided for producing an electrically-powered device and/or component that is embeddable in a solid structural component, and a system, a produced device and/or a produced component is provided. The produced electrically powered device includes an attached autonomous electrical power source in a form of a unique, environmentally-friendly structure configured to transform thermal energy at any temperature above absolute zero to an electric potential without any external stimulus including physical movement or deformation energy. The autonomous electrical power source component provides a mechanism for generating renewable energy as primary power for the electrically-powered device and/or component once an integrated structure including the device and/or component is deployed in an environment that restricts future access to the electrical power source for servicing, recharge, replacement, replenishment or the like.

A server includes a communication device and a processor. The communication device obtains a power rate unit price dependent on a region where external charging is performed and a time slot when external charging is performed. The processor calculates a first power rate indicating a power rate when the external charging is performed with a first power feeding facility provided at a departure place before departure of a vehicle, calculates a second power rate indicating a power rate when the external charging is performed with a second power feeding facility provided in the vicinity of a traveling route after departure of the vehicle, and when the second power rate is lower than the first power rate, reduces an amount of power feeding during the external charging with the first power feeding facility, as compared with when the second power rate is equal to or higher than the first power rate.

A server includes a communication device and a processor. The communication device obtains a power rate unit price dependent on a region where external charging is performed and a time slot when external charging is performed. The processor calculates a first power rate indicating a power rate when the external charging is performed with a first power feeding facility provided at a departure place before departure of a vehicle, calculates a second power rate indicating a power rate when the external charging is performed with a second power feeding facility provided in the vicinity of a traveling route after departure of the vehicle, and when the second power rate is lower than the first power rate, reduces an amount of power feeding during the external charging with the first power feeding facility, as compared with when the second power rate is equal to or higher than the first power rate.

A method comprises providing power from a battery to an external device using a first circuit; and receiving power from a first power source to provide power to the battery using a second circuit while providing power to the external device.

A magnetic alignment system can include a primary annular magnetic alignment component and a secondary annular magnetic alignment component. The primary alignment component can include an inner annular region having a first magnetic orientation, an outer annular region having a second magnetic orientation opposite to the first magnetic orientation, and a non-magnetized central annular region disposed between the primary inner annular region and the primary outer annular region. The secondary alignment component can have a magnetic orientation with a radial component. Additional features, such as a rotational magnetic alignment component and/or an NFC coil and circuitry can be included.

An energy harvesting device (CTH) installed in an electrical distribution system (EDS) for powering ancillary electrical devices (AD) used in the distribution system. The device includes a first voltage regulator circuit (CC) configured to produce a voltage matched to a power curve of a current transformer (CT) to which the device is electrically coupled. The device also includes a second and separate voltage regulator circuit (SVR) which continuously operates to maximize the amount of electrical energy recovered from the current transformer.

An electronic device in a wireless power system may be operable with a removable accessory such as a case. The device may have coplanar power transmitting and power receiving coils. The transmitting coil may be positioned within a central opening of the receiving coil. The removable accessory may have an embedded receiving coil configured to receive wireless power from the transmitting coil of the electronic device. The receiving coil of the electronic device may receive wireless power from a power transmitting device such as charging mat. The receiving coil of the electronic device may operate up to a higher maximum power than the transmitting coil of the electronic device. The power transmitting coil and power receiving coil in the electronic device may operate at different power transmission frequencies. To mitigate crosstalk, the power transmitting coil's operation frequency may be a non-integer multiple of the power receiving coil's operation frequency.