A wireless charging transmitting apparatus and method and a wireless charging system are provided. The transmitting apparatus includes a compensation circuit (206), an inverter circuit (201), a transmitting coil (202), an impedance adjustment circuit (203), and a controller (204). The impedance adjustment circuit (203) includes a leading-bridge-arm impedance adjustment circuit and a lagging-bridge-arm impedance adjustment circuit, and the leading-bridge-arm impedance adjustment circuit and the lagging-bridge-arm impedance adjustment circuit each include an inductive branch, where the inductive branch includes at least one controllable inductive branch, and each controllable inductive branch includes at least one inductor and at least one switch. The controller (204) controls the switches in the controllable inductive branches to be turned on or off, to adjust values of inductive currents injected into a leading bridge arm and a lagging bridge arm through the impedance adjustment circuit (203), so that controllable switching transistors in the leading bridge arm and the lagging bridge arm implement zero voltage switching. In this way, efficiency and interoperability of a wireless charging system are improved.
WIRELESS CHARGING TRANSMITTING DEVICE AND METHOD AND WIRELESS CHARGING SYSTEM
DRAHTLOSE LADUNGSÜBERTRAGUNGSVORRICHTUNG UND VERFAHREN SOWIE DRAHTLOSES LADESYSTEM
DISPOSITIF ET PROCÉDÉ DE TRANSMISSION DE CHARGE SANS FIL, ET SYSTÈME DE CHARGE SANS FIL
2022-10-05
Patent
Electronic Resource
English
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