基于敏感参数的锂离子电池加速寿命试验评价方法

Evaluation Method of Accelerated Life Test for Lithium-ion Battery Based on Degeneration of Sensitive Parameters

本文以18650锂离子电池为研究对象,提出了一种基于敏感参数Var(ΔQ100-10)的锂离子电池加速寿命试验评价方法,给出了锂离子电池循环寿命退化V-Q曲线敏感参数Matlab数据分析和神经网络拟合算法,设计开发了高稳定高精度高频采样的加速寿命试验系统,实现对锂离子电池10~20年长寿命指标的快速评价。

In this paper,talking 18650 lithium-ion battery as the research object,an accelerated life test evaluation method of lithium-ion battery based on sensitive parameter Var(ΔQ100-10) is proposed.The matlab data analysis and neural network fitting algorithm of sensitive parameters of cycle life degradation V-Q curve of lithium-ion battery are given,and an accelerated life test system with high stability and high precision sampling is designed and developed,Which realizes the rapid evaluation of the long life index of lithium ion battery from 10 to 20 years.