Title:
電池劣化判定装置、相関関係分析装置、組電池、電池劣化判定方法及び電池劣化判定プログラム
Document Type and Number:
Japanese Patent JP7304197
Kind Code:
B2
Abstract:
To provide a device for determining battery degradation, a battery pack, a method for determining battery degradation and a program for determining battery degradation each of which enables the degraded state of the battery pack to be easily and accurately recognized.SOLUTION: A correlation storage unit 15 prestores correlation between a resistance value for evaluation, a discharge capacity for evaluation and a battery back temperature. A measurement unit 11 measures the voltage and current supplied from a battery pack 2 and the battery pack temperature in accordance with an elapsed time. A discharge capacity calculation unit 12 and an apparent resistance value calculation unit 13 calculate the discharge capacity and resistance value of the battery pack 2 on the basis of the measured voltage and current. A unit 14 for acquiring a resistance value for evaluation acquires a resistance value for evaluation on the basis of relationship between the discharge capacity and resistance value of the battery pack 2. An apparent discharge capacity acquisition unit 16 acquires the discharge capacity for evaluation of the battery pack 2 on the basis of the resistance value for evaluation, the battery pack temperature and the correlation.SELECTED DRAWING: Figure 1
Inventors:
Kihira Tsuneo
Takuya Nayuki
Tomohiko Ikeya
Takuya Nayuki
Tomohiko Ikeya
Application Number:
JP2019085896A
Publication Date:
July 06, 2023
Filing Date:
April 26, 2019
Export Citation:
Assignee:
Central Research Institute of Electric Power Industry
International Classes:
G01R31/392; G01R31/374; G01R31/382; G01R31/387; G01R31/389; H01M10/48; H01M50/20; H02J7/00
Domestic Patent References:
| JP2016173260A | ||||
| JP2004152755A |
Foreign References:
| WO2014083853A1 | ||||
| WO2015011773A1 |
Attorney, Agent or Firm:
Sakai International Patent Office
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