电源技术2018，Vol.42Issue(2)：185-187,194,4.
基于容量衰减速率的三元锂电池健康状态预测
Prediction of state of health for ternary lithium battery based on capacity decay rate
寇志华 1潘旭海 1季豪1
作者信息
- 1. 南京工业大学安全科学与工程学院江苏省城市与工业安全重点实验室,江苏南京210009
- 折叠
摘要
Abstract
As an energy carrier in the electric vehicle,how to accurately estimate state of health is one of the focus and core technologies in the area of electric vehicle.The accurate estimation of state of health plays an important role in research,development and marketing of lithium battery.A prediction model of state of health for ternary lithium battery based on capacity decay rate was proposed on the condition of the changed discharge current and less cycles of full charge and discharge.Taking the 5 Ah ternary lithium ion battery as research object,the discharge cycle tests were performed at the ambient temperature of 0,10,20,30,40 ℃.The relationship between the capacity decay and cycles was studied.The decay rate of capacity with cycles was obtained by fitting the curve.It's found that temperature and discharge rate have effect on decay rate.SOH prediction model was established and validated.The results show the average relative error between the predicted value and actual data is 0.56％,and the model can accurately predict the state of health of lithium battery.关键词
三元锂电池/电池健康状态/容量衰减速率/放电倍率Key words
ternary lithium battery/state of health/rate of capacity decay/discharge rate分类
信息技术与安全科学引用本文复制引用
寇志华,潘旭海,季豪..基于容量衰减速率的三元锂电池健康状态预测[J].电源技术,2018,42(2):185-187,194,4.
