Title:
DEGRADATION STATE PREDICTION METHOD, DEGRADATION STATE PREDICTION DEVICE, AND DEGRADATION STATE PREDICTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/176592
Kind Code:
A1
Abstract:
The purpose of the present invention is to predict, with good accuracy, a degradation state of a secondary battery. In a degradation state prediction method, a per-cause degradation state 25 is calculated for each cause of degradation, and a degradation state 26 of a secondary battery 1 is predicted on the basis of a plurality of per-cause degradation states 25. The per-cause degradation states 25 are each calculated on the basis of a preceding per-cause degradation state 21, which is a per-cause degradation state 25 that precedes by a discretionary first amount of time, and a unit per-cause degradation state of the degradation occurring in the duration of the first amount of time, such calculation taking into consideration time-dependency in accordance with a power-law which varies by degradation cause and is to be applied to the elapsed time of a per-cause degradation state 25, and a degradation speed that varies by degradation cause and is determined by usage conditions 22 at the time of prediction.
Inventors:
MIZOGUCHI YASUNORI (JP)
HAYANO AKIHITO (JP)
KINOSHITA HAJIME (JP)
HAYANO AKIHITO (JP)
KINOSHITA HAJIME (JP)
Application Number:
PCT/JP2023/008593
Publication Date:
September 21, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
OSAKA GAS CO LTD (JP)
KRI INC (JP)
KRI INC (JP)
International Classes:
G01R31/392; H01M10/42; H01M10/48
Domestic Patent References:
| WO2017002292A1 | 2017-01-05 | |||
| WO2018117105A1 | 2018-06-28 | |||
| WO2023022224A1 | 2023-02-23 | |||
| WO2023022225A1 | 2023-02-23 | |||
| WO2019171688A1 | 2019-09-12 |
Foreign References:
| JP2013210340A | 2013-10-10 | |||
| JP2011220900A | 2011-11-04 | |||
| JP2014052186A | 2014-03-20 | |||
| JP2020003497A | 2020-01-09 | |||
| JP2019053074A | 2019-04-04 |
Attorney, Agent or Firm:
R&C IP LAW FIRM (JP)
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