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- Title
Battery module capacity fade model based on cell voltage inconsistency and probability distribution.
- Authors
Yulong Zhang; Jian Xu; Shichun Yang; Cheng Deng; Fei Chen; Fang Lei
- Abstract
Cell voltage inconsistency of battery module is correlated with cell capacity fading inconsistency caused by uneven temperature or improper charge/discharge rate, so it is essential to study on cell voltage inconsistency when establishing a battery module capacity fade model. An accelerated life experiment is conducted on 12-series (12S) LiMn2O4 battery. The evaluation index of the voltage inconsistency is given, and the evolution of the voltage of the 12S battery module is obtained. Furthermore, a model of capacity fade of this 12S battery is established based on cell voltage inconsistency, which is extended to any-series battery by means of probability distribution. Based on this extended model, the relationship between the number of cells and the life of the battery is obtained.
- Subjects
ELECTRIC batteries; ELECTRIC cells; PROBABILITY theory; ELECTRIC potential; ELECTRIC admittance
- Publication
Advances in Mechanical Engineering (Sage Publications Inc.), 2017, Vol 9, Issue 9, p1
- ISSN
1687-8132
- Publication type
Article
- DOI
10.1177/1687814017730757