Title:
SIGNAL DETECTION CIRCUIT, DETECTION METHOD, MOTOR CONTROLLER, COMPRESSOR AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2024/040929
Kind Code:
A1
Abstract:
A signal detection circuit, a detection method, a motor controller, a compressor, and a vehicle. The circuit (100) comprises: a lower bridge driving unit (110), used to output a first fault detection signal; an upper bridge driving unit (120), used to output a second fault detection signal; a switch unit (130), used to disconnect transmission of the second fault detection signal in a phase when a lower bridge switch tube is connected to charge a bootstrap and negative voltage capacitor of the upper bridge driving unit; and a control unit (140), used to control the switch unit to disconnect transmission of the second fault detection signal, and when charging of the bootstrap and negative voltage capacitor of the upper bridge driving unit is complete, control the switch unit to be connected, so as to simultaneously receive the first fault detection signal and the second fault detection signal.
Inventors:
QIN FEIXIANG (CN)
SHI HONGKANG (CN)
SONG WANJIE (CN)
LI JUNLONG (CN)
LI YUDONG (CN)
SHI HONGKANG (CN)
SONG WANJIE (CN)
LI JUNLONG (CN)
LI YUDONG (CN)
Application Number:
PCT/CN2023/080869
Publication Date:
February 29, 2024
Filing Date:
March 10, 2023
Export Citation:
Assignee:
ANHUI WELLING AUTO PARTS CORPORATION LTD (CN)
GUANGDONG WELLING AUTO PARTS CORPORATION LTD (CN)
GUANGDONG WELLING AUTO PARTS CORPORATION LTD (CN)
International Classes:
G01R31/26; F04B49/06; H02P6/08; H02P29/024; H02P29/032
Foreign References:
| CN110958004A | 2020-04-03 | |||
| CN110806548A | 2020-02-18 | |||
| CN114779129A | 2022-07-22 | |||
| CN104756393A | 2015-07-01 | |||
| JP2005210830A | 2005-08-04 |
Attorney, Agent or Firm:
BEIJING LISENG INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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