Title:
リチウムイオン二次電池の寿命推定装置
Document Type and Number:
Japanese Patent JP6655801
Kind Code:
B2
Abstract:
A life estimation apparatus includes a second calculation unit that calculates a remaining capacity, which is a capacity with which the lithium ion secondary cell is capable of being charged or which the lithium ion secondary cell is capable of discharging, based on Equation 1 having an exponent n1 of 0.9 to 1.1 and Equation 2 having an exponent n2 of 0.4 to 0.6. The second calculation unit calculates the remaining capacity using Equation 1 if the amount of change of open circuit voltage, the amount of change of a voltage rise width, or the amount of change of a voltage rise rate has a positive value and calculates the remaining capacity using Equation 2 if the amount of change of the open circuit voltage, the amount of change of the voltage rise width, or the amount of change of the voltage rise rate has a negative value.
Inventors:
Yuta Kuroda
Masanobu Takeuchi
Masanobu Takeuchi
Application Number:
JP2018508478A
Publication Date:
February 26, 2020
Filing Date:
February 02, 2017
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H01M10/48; G01R31/382; G01R31/385; G01R31/392; H01M10/42; H02J7/00
Domestic Patent References:
| JP2015059928A | ||||
| JP2011220900A |
Foreign References:
| WO2015037184A1 | ||||
| WO2017169088A1 | ||||
| CN102213747A | ||||
| CN103389472A |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office