A wireless connector includes: a first unit attached detachably from the outside of a first object; and a second unit attached detachably from the outside of a second object. The first unit includes a first housing to which a first transmission/reception part and a first connector part are secured, the first connector part being attached to the first object and transmitting a to-be-transmitted target between the first connector part and the first object. The second unit includes a second housing to which a second transmission/reception part and a second connector part are secured, the second connector part being attached to the second object and transmitting a to-be-transmitted target between the second connector part and the second object. The first transmission/reception part and the second transmission/reception part are arranged so as to be separated from each other and opposed to each other to wirelessly transmit the to-be-transmitted target.

A wireless connector includes: a first unit attached detachably from the outside of a first object; and a second unit attached detachably from the outside of a second object. The first unit includes a first housing to which a first transmission/reception part and a first connector part are secured, the first connector part being attached to the first object and transmitting a to-be-transmitted target between the first connector part and the first object. The second unit includes a second housing to which a second transmission/reception part and a second connector part are secured, the second connector part being attached to the second object and transmitting a to-be-transmitted target between the second connector part and the second object. The first transmission/reception part and the second transmission/reception part are arranged so as to be separated from each other and opposed to each other to wirelessly transmit the to-be-transmitted target.

A first power storage pack wiredly transmits identification information retained in the first power storage pack to a charging device when the first power storage pack is detached from an electric movable body. The charging device wiredly transmits the identification information received from the first power storage pack to a second power storage pack. The controller of the second power storage pack transmits via near-field communication a signal including the identification information received from the charging device. The electric movable body collates whether or not the identification information included in the received signal matches the identification information retained in the first power storage pack.

A wireless power transmission apparatus according to an embodiment of the present specification transmits wireless power to a wireless power reception apparatus and comprises: a power conversion circuit that transmits the wireless power to the wireless power reception apparatus; and a communication/control circuit that communicates with the wireless power reception apparatus and controls the wireless power. In a power transfer phase for transmitting the wireless power to the wireless power reception apparatus, the communication/control circuit may receive, from the wireless power reception apparatus, a data packet including information about a slot time for performing foreign object detection and perform the foreign object detection during the slot time.

A wireless power transmission apparatus according to an embodiment of the present specification transmits wireless power to a wireless power reception apparatus and comprises: a power conversion circuit that transmits the wireless power to the wireless power reception apparatus; and a communication/control circuit that communicates with the wireless power reception apparatus and controls the wireless power. In a power transfer phase for transmitting the wireless power to the wireless power reception apparatus, the communication/control circuit may receive, from the wireless power reception apparatus, a data packet including information about a slot time for performing foreign object detection and perform the foreign object detection during the slot time.

A disclosed battery management system for wireless charging includes a communication circuit and a controller. The communication circuit receives information on a first state of charge (SOC) of the first battery module, a second SOC of the second battery module, and a third SOC of the third battery module. The controller controls the first wireless charging between the first battery module and the second battery module and the second wireless charging between the second battery module and the third battery module for balancing between the first SOC, the second SOC, and the third SOC. The first wireless charging is to wirelessly transmit power from one of the first battery module and the second battery module to the other battery module. The second wireless charging is to wirelessly transmit power from one of the second battery module and the third battery module to the other battery module.

A disclosed battery management system for wireless charging includes a communication circuit and a controller. The communication circuit receives information on a first state of charge (SOC) of the first battery module, a second SOC of the second battery module, and a third SOC of the third battery module. The controller controls the first wireless charging between the first battery module and the second battery module and the second wireless charging between the second battery module and the third battery module for balancing between the first SOC, the second SOC, and the third SOC. The first wireless charging is to wirelessly transmit power from one of the first battery module and the second battery module to the other battery module. The second wireless charging is to wirelessly transmit power from one of the second battery module and the third battery module to the other battery module.

A wireless power system has a wireless power transmitting device and a wireless power receiving device. A clock signal may be provided to inverter circuitry in wireless power transmitting circuitry at a power transmission frequency. The clock signal may cause transistors in the inverter circuitry to turn on and off to create AC current signals through the wireless power transmitting coil. The clock signal may be processed to mitigate electromagnetic interference in the system.

A wireless power system has a wireless power transmitting device and a wireless power receiving device. A clock signal may be provided to inverter circuitry in wireless power transmitting circuitry at a power transmission frequency. The clock signal may cause transistors in the inverter circuitry to turn on and off to create AC current signals through the wireless power transmitting coil. The clock signal may be processed to mitigate electromagnetic interference in the system.

A user premises system is provided. The user premises system includes an internal unit and an external modem unit. The internal unit includes a wireless power transmitter unit that inductively provides power through an exterior structure of a premises. The external modem unit includes a wireless power receiver unit that inductively receives power from the wireless power transmitter unit of the internal unit through the exterior structure of the premises. The internal and the external modem units each include a short range transceiver that wireless communicate data between internal and the external modem units.