Title:
ELECTROMAGNETIC INDUCTION TYPE WIRELESS POWER SUPPLY SYSTEM AND LOAD SUDDEN-CHANGE PROTECTION CIRCUIT THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/080198
Kind Code:
A1
Abstract:
An electromagnetic induction type wireless power supply system and a load sudden-change protection circuit therefor. The wireless power supply system comprises a wireless power supply end (100) and a wireless receiver (200). The wireless receiver comprises a resonant receiving unit (210) and a rectifying and voltage-stabilizing unit (220). The rectifying and voltage-stabilizing unit is connected to the resonant receiving unit, and processes electric energy received by the resonant receiving unit to output voltage-stabilized power (VCC). The load sudden-change protection circuit comprises an overvoltage protection unit (231) and an under-voltage protection unit (232). The overvoltage protection unit is separately connected to a voltage-stabilized power supply and a load (10), and the overvoltage protection unit turns on the load when the voltage of the voltage-stabilized power supply is higher than a first preset voltage due to sudden turn-off of the load. The under-voltage protection unit is separately connected to the voltage-stabilized power supply and the load, and the under-voltage protection unit turns off the load when the voltage of the voltage-stabilized power supply is lower than a second preset voltage due to sudden turn-on of the load. The electromagnetic induction type wireless power supply system and the load sudden-change protection circuit therefor can effectively resolve the problems of device damage in the circuit, system operation interruption and the like caused by a sudden change of the load.
Inventors:
ZHANG FAN (CN)
WANG YUNFENG (CN)
ZENG LUTIAN (CN)
LIU WENHUA (CN)
HUANG SHUFENG (CN)
LEI JUN (CN)
JIANG DEYONG (CN)
WANG YUNFENG (CN)
ZENG LUTIAN (CN)
LIU WENHUA (CN)
HUANG SHUFENG (CN)
LEI JUN (CN)
JIANG DEYONG (CN)
Application Number:
PCT/CN2017/111148
Publication Date:
May 02, 2019
Filing Date:
November 15, 2017
Export Citation:
Assignee:
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD (CN)
International Classes:
H02J50/12; H02H9/04
Foreign References:
| CN105934863A | 2016-09-07 | |||
| CN104052161A | 2014-09-17 | |||
| CN102723694A | 2012-10-10 | |||
| CN206498183U | 2017-09-15 | |||
| CN104037883A | 2014-09-10 | |||
| JPS5911713A | 1984-01-21 |
Other References:
See also references of EP 3687034A4
Attorney, Agent or Firm:
RUNPING&PARTNERS (CN)
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