RECEIVING DEVICE AND WIRELESS POWER TRANSFER APPARATUS

摘要

A receiving device includes: a secondary coil capable of wirelessly receiving alternating current power; a load having an impedance that varies in accordance with a value of input power; a variable impedance conversion unit located between the secondary coil and the load; a plurality of adjusting resistors located at an output side of the variable impedance conversion unit, wherein the adjusting resistors respectively have resistances that are fixed regardless of the value of the input power and differ from each other; and a switch that switches a subject supplied with power output from the variable impedance conversion unit to one of the load and the adjusting resistors. When the impedance of the variable impedance conversion unit is variably controlled, the subject supplied with the power output from the variable impedance conversion unit is switched to one of the adjusting resistors.

主权项

1. A receiving device capable of wirelessly receiving alternating current power from a supply device including a primary coil that receives the alternating current power, the receiving device comprising:
a secondary coil capable of wirelessly receiving the alternating current power from the primary coil; a load having an impedance that varies in accordance with a value of input power; a variable impedance conversion unit having a variable impedance and located between the secondary coil and the load; a plurality of adjusting resistors located at an output side of the variable impedance conversion unit, wherein the adjusting resistors respectively have resistances that are fixed regardless of the value of the input power and differ from each other; and a switch that switches a subject supplied with power output from the variable impedance conversion unit to one of the load and the adjusting resistors, wherein when the impedance of the variable impedance conversion unit is variably controlled, the subject supplied with the power output from the variable impedance conversion unit is switched to one of the adjusting resistors.