Title:
BATTERY ABNORMALITY DETECTING DEVICE, AND BATTERY ABNORMALITY DETECTING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/259973
Kind Code:
A1
Abstract:
A battery abnormality detecting device (100) is provided with: an alternating current impedance measuring unit (110) for measuring an alternating current impedance of a battery cell; and an abnormality determining unit (120) for determining that the battery cell is an abnormal cell if the alternating current impedance does not lie within a standard range. For example, the alternating current impedance measuring unit (110) measures the alternating current impedance (Z1 to Z8) of each of a plurality of directly connected battery cells, and the abnormality determining unit (120) calculates the standard range from the plurality of measured alternating current impedances (Z1 to Z8), determines whether each of the plurality of alternating current impedances (Z1 to Z8) lies within the standard range, and determines that a battery cell having an alternating current impedance that does not lie within the standard range is an abnormal cell.
Inventors:
KAWABE AKIRA
KOBAYASHI HITOSHI
FUJII KEIICHI
KOBAYASHI HITOSHI
FUJII KEIICHI
Application Number:
PCT/JP2022/022607
Publication Date:
December 15, 2022
Filing Date:
June 03, 2022
Export Citation:
Assignee:
NUVOTON TECH CORPORATION JAPAN (JP)
International Classes:
G01R31/389; G01R31/367; H01M10/48; H02J7/00
Domestic Patent References:
| WO2012095913A1 | 2012-07-19 |
Foreign References:
| JPH0888941A | 1996-04-02 | |||
| JP2010067502A | 2010-03-25 | |||
| JP2016085062A | 2016-05-19 | |||
| JP2018128769A | 2018-08-16 | |||
| JP2015222195A | 2015-12-10 | |||
| JP2011137681A | 2011-07-14 | |||
| JP2000030747A | 2000-01-28 | |||
| JP5261622B1 | 2013-08-14 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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