Electrical power receiving apparatus and electrical power receiving method

摘要

This electrical power-receiving apparatus makes it possible to suppress a decline in power supply efficiency in a variety of different circumstances while avoiding an increase in circuit scale. This apparatus comprises an impedance control unit (307) for sequentially switching through any one of a plurality of charging devices in a charging device group (310), as candidate charging devices for a supply destination to which electrical power is to be supplied. The impedance control unit (307) also selects from the candidates a charging device to which electrical power is actually supplied, on the basis of the difference between the impedance of the charging device group (310) for each candidate and the impedance of an electrical power receiving antenna unit (301), and causes electrical power to be supplied to the selected charging device.

主权项

1. An electrical power receiving apparatus comprising:
an electrical power receiving antenna section that receives electrical power; a first impedance measurement section that measures impedance of the electrical power receiving antenna section; a charging apparatus group that has a plurality of charging apparatuses and accumulates the electrical power; a second impedance measurement section that measures impedance of the charging apparatus group; and a control section that sequentially switches at least one of the plurality of charging apparatuses as candidates for the charging apparatuses as a supply destination to which the electrical power will be supplied, selects the charging apparatus, to which the electrical power will be actually supplied, from the candidates on the basis of the difference between impedance of the charging apparatus group for each candidate and impedance of the electrical power receiving antenna section, and causes the electrical power to be supplied to the selected charging apparatus.