Patent ID: 9640976
Date: 2017-05-02
CPC Classifications: B60L,H02H,H02J,Y02T

Claim:
1. A wireless power transfer overvoltage protection system comprising: a resonant receiving circuit comprising, an inductor, a resonant capacitor and a first switching device, the inductor having a first end and a second end, the first switching device being connected between the first end and the second end of the inductor, the resonant receiving circuit being connected to a rectifier and a filter capacitor, the first switching device having a first state in which the first end and the second end of the inductor are electrically coupled to each other through the first switching device, and a second state in which the inductor and resonant capacitor are capable of resonating; and a control module configured to control the first switching device to switching between the first state and the second state when the resonant receiving circuit is charging a load and a preset condition is satisfied and otherwise, the first switching device is maintained in the first state.