Invention Grant
- Patent Title: Overcurrent and overvoltage protection circuit, electromagnetic induction type wireless power supply system and cooking appliance
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Application No.: US16757355Application Date: 2017-11-16
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Publication No.: US11217990B2Publication Date: 2022-01-04
- Inventor: Fan Zhang , Yunfeng Wang , Jun Lei , Shufeng Huang , Deyong Jiang , Wenhua Liu , Lutian Zeng
- Applicant: FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING CO., LTD.
- Applicant Address: CN Foshan
- Assignee: FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING CO., LTD.
- Current Assignee: FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING CO., LTD.
- Current Assignee Address: CN Foshan
- Agency: Kilpatrick Townsend & Stockton, LLP
- Priority: CN201721383967.8 20171024
- International Application: PCT/CN2017/111336 WO 20171116
- International Announcement: WO2019/080212 WO 20190502
- Main IPC: H02H7/00
- IPC: H02H7/00 ; H02H7/20 ; H02J50/12 ; H02H1/00 ; H05B6/06

Abstract:
Provided are an overcurrent and overvoltage protection circuit, an electromagnetic induction type wireless power supply system and a cooking appliance. The overcurrent and overvoltage protection circuit includes a current detecting unit that outputs a current detection value by detecting a resonance current of a resonant transmitting unit a voltage detecting unit that outputs a voltage detection value by detecting a resonance voltage of the resonant transmitting unit and a main control unit including a current detecting end and a voltage detecting end, and the current detecting end is connected to an output end of the current detecting unit, the voltage detecting end is connected to an output end of the voltage detecting unit, and when the current detection value exceeds a preset current limit and/or the voltage detection value exceeds a preset voltage limit.
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