Title:
HIGH-VOLTAGE POWER-ON AND POWER-OFF CONTACTOR CONTACT STATE DIAGNOSIS DEVICE AND METHOD, AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2023/231734
Kind Code:
A1
Abstract:
A high-voltage power-on and power-off contactor contact state diagnosis device and method, and a vehicle. The high-voltage power-on and power-off contactor contact state diagnosis device comprises a high-voltage power supply. Two ends of the high-voltage power supply are each separately electrically connected to one end of a fuse, one end of a main negative contactor and one end of a second resistor. The other end of the fuse is electrically connected to a quick-charging positive contactor, a pre-charging contactor, a main positive contactor, and a first resistor. The other end of the first resistor and the other end of the second resistor are connected to each other and are electrically connected to a sampling module. The other end of the quick-charging positive contactor is separately electrically connected to an external load and a voltage division module.
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Inventors:
TONG LICUI (CN)
LEI AO (CN)
LIU PENGFEI (CN)
NIU CHUNJING (CN)
ZHANG WEIJIE (CN)
LEI AO (CN)
LIU PENGFEI (CN)
NIU CHUNJING (CN)
ZHANG WEIJIE (CN)
Application Number:
PCT/CN2023/093426
Publication Date:
December 07, 2023
Filing Date:
May 11, 2023
Export Citation:
Assignee:
CHINA FAW CO LTD (CN)
International Classes:
B60L3/00; B60R16/02; G01R31/327
Foreign References:
| CN115091957A | 2022-09-23 | |||
| CN106338688A | 2017-01-18 | |||
| CN109188266A | 2019-01-11 | |||
| CN112858894A | 2021-05-28 | |||
| KR20140136844A | 2014-12-01 |
Attorney, Agent or Firm:
CHANGCHUN JIDA PATENT AGENT CO ., LTD (CN)
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