Title:
SECONDARY BATTERY CONTROL SYSTEM, BATTERY PACK, AND SECONDARY BATTERY CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2021/224990
Kind Code:
A1
Abstract:
A secondary battery control system which corrects the SOC of a secondary battery in a manner such that the SOC at the position of a prescribed point P equals a specified value, if: the last minimum point where dQ/dV changes from rising to falling within the range of 3.34-3.38V, inclusive, on a V-dQ/dv curve, or the second maximum point when counting from the low-voltage side on the V-dQ/dV curve, or a point which is mathematically equivalent to said maximum point, is a first point; the maximum point at which dQ/dV changes from rising to falling in the range above 3.34V on the V-dQ/dV curve, or the third maximum point when counting from the low-voltage side on the V-dQ/dV curve, or a point which is mathematically equivalent to said maximum point, is a second point; the value obtained by standardizing the dQ/dV value at the first point is dQ1/dV1; and the value obtained by standardizing the dQ/dV value at the second point is dQ2/dV2.
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Inventors:
TAKAGI YASUHIRO (JP)
NAKAMURA KEN (JP)
KUME YUSUKE (JP)
ENDO EISHI (JP)
NAKAMURA KEN (JP)
KUME YUSUKE (JP)
ENDO EISHI (JP)
Application Number:
PCT/JP2020/018681
Publication Date:
November 11, 2021
Filing Date:
May 08, 2020
Export Citation:
Assignee:
TDK CORP (JP)
International Classes:
H01M10/48; G01R31/382
Foreign References:
| JP2019056595A | 2019-04-11 | |||
| JP2016014588A | 2016-01-28 | |||
| JP2009252381A | 2009-10-29 | |||
| JP2014092471A | 2014-05-19 | |||
| JP2016119249A | 2016-06-30 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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