WIRELESS CHARGING DEVICE, AND TERMINAL USING SAME
Applicants
HUAWEI TECHNOLOGIES CO., LTD.
Inventors
LIU, Qitang, LIU, Ce, SHU, Weiliang, LIU, Yanding, WANG, Pinghua, CAO, Yong
Abstract
A wireless charging apparatus is provided, where the apparatus is located in an electronic device such as a terminal or an electric vehicle and configured to receive energy sent by a transmit end coil of a wireless charging transmit end, to charge a battery or to supply power to a load such as a power consumption component. The wireless charging apparatus includes a receive end coil, a switch selection circuit, a plurality of charging circuits, and a receive end controller. An input end of the switch selection circuit is connected to an output end of the receive end coil, and an output end of the switch selection circuit is connected to an input end of each of the charging circuits. Charging power of the charging circuits is different from each other, and an output end of each of the charging circuits is configured to connect to the load of the electronic device. The receive end controller may obtain a coupling coefficient between the receive end coil and the transmit end coil, and control, based on the coupling coefficient, the switch selection circuit to select one or more of the charging circuits to connect to the receive end coil.
IPC Classifications
Designated States
AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR