Title:
HIGH-VOLTAGE INTERLOCK CIRCUIT AND DETECTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/232883
Kind Code:
A1
Abstract:
A high-voltage interlock circuit, comprising: a first switch module (K1) having one end connected to a first power supply (V1), and having the other end connected to one end of a high-voltage component module (G) and a first power ground; a second switch module (K2) comprising a first driving unit (M1) and a first switch unit (J1) which are isolated from each other, the first switch unit (J1) being provided between a second power supply (V2) and a second power ground; a third switch module (K3) comprising a second driving unit (M2) and a second switch unit (J2) which are isolated from each other, both the first driving unit (M1) and the second driving unit (M2) being provided between the high-voltage component module (G) and the first power ground, and the second switch unit (J2) being provided between a third power supply (V3) and the second power ground; a fourth switch module (K4) being provided with a fourth power supply (V4) and the first power ground; and a controller used for determining a fault of the high-voltage component module (G) by using the obtained first detection result of one end of the first switch unit (J1) and the obtained second detection result of one end of the second switch unit (J2). A detection method for the high-voltage interlock circuit is also comprised. By means of the high-voltage interlock circuit and the detection method, the fault detection accuracy is improved.
Inventors:
FU YANHUI (CN)
WU GUOXIU (CN)
DU BAOHAI (CN)
LIU CHANGJIAN (CN)
WU GUOXIU (CN)
DU BAOHAI (CN)
LIU CHANGJIAN (CN)
Application Number:
PCT/CN2021/078723
Publication Date:
November 25, 2021
Filing Date:
March 02, 2021
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
G01R31/50; B60L3/00
Domestic Patent References:
| WO2019054128A1 | 2019-03-21 |
Foreign References:
| CN109782160A | 2019-05-21 | |||
| CN208999516U | 2019-06-18 | |||
| CN110261712A | 2019-09-20 | |||
| CN110967616A | 2020-04-07 | |||
| CN110967617A | 2020-04-07 | |||
| CN105313700A | 2016-02-10 | |||
| CN210337589U | 2020-04-17 | |||
| US20140001840A1 | 2014-01-02 |
Other References:
See also references of EP 3940408A4
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
Download PDF: