Title:
BATTERY DISCONNECTION SYSTEM AND FAILURE DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/228592
Kind Code:
A1
Abstract:
This battery disconnection system comprises: a main relay connected between a battery and a load; a serially-connected precharge relay and a precharge resistor that are connected in parallel with the main relay; a current sensor that measures the current in the battery; a pyrotechnic interrupter for interrupting battery current; a voltage measurement unit that measures the voltage of the precharge resistor; and a control circuit. The control circuit controls the pyrotechnic interrupter on the basis of the measurement value of the current sensor when the main relay is on, and detects a failure of the current sensor on the basis of the measurement value of the voltage measurement unit when the main relay is off and the precharge relay is on.
Inventors:
SADAYUKI EIICHI
IWAKI HIDEKI
IWAKI HIDEKI
Application Number:
PCT/JP2023/014046
Publication Date:
November 30, 2023
Filing Date:
April 05, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02J7/00; G01R31/00; H02H7/18
Foreign References:
| JP2020099112A | 2020-06-25 | |||
| JP2010183679A | 2010-08-19 | |||
| JP2004006131A | 2004-01-08 | |||
| KR20220023082A | 2022-03-02 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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