Title:
BUCK-BOOST POWER SUPPLY SYSTEM AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2024/093101
Kind Code:
A1
Abstract:
Disclosed in the present disclosure are a buck-boost power supply system and an air conditioner. The buck-boost power supply system (10) comprises: a PFC circuit (120), a switch circuit (110), and an overvoltage protection circuit (140). The switch circuit (110) regulates the voltage output by the PFC circuit (120) to a load (20), and the overvoltage protection circuit (140) charges parasitic capacitance in the switch circuit (110) when the switch circuit (110) is abnormally turned off, so as to reduce the voltage of each switch transistor in the switch circuit (110) after the switch circuit (110) is turned on. In this way, the technical problem of breakdown of the buck-boost power supply system due to high voltage when the buck-boost power supply system is suddenly cut off is solved.
Inventors:
HUO ZHAOJING (CN)
XU JINQING (CN)
ZHANG JIANBIN (CN)
CEN CHANG'AN (CN)
LI MING (CN)
XU JINQING (CN)
ZHANG JIANBIN (CN)
CEN CHANG'AN (CN)
LI MING (CN)
Application Number:
PCT/CN2023/083963
Publication Date:
May 10, 2024
Filing Date:
March 27, 2023
Export Citation:
Assignee:
GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD (CN)
International Classes:
H02M1/42; H02M1/08
Foreign References:
| CN112054665A | 2020-12-08 | |||
| JP2011187833A | 2011-09-22 | |||
| KR20210015321A | 2021-02-10 | |||
| US20210305980A1 | 2021-09-30 |
Attorney, Agent or Firm:
BEIJING ZHONGDA DEQUAN IP AGENCY CO., LTD. (CN)
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