摘要
采用了正态分布函数对锂电池组的负载电压进行了分析,得出了其负载电压波动大小与电池组结构之间的对应关系;采用了对数正态分布函数和二项分布函数对锂电池组的放电可靠度进行了评估,得出了运用对数正态分布函数进行可靠度评估具有样本量少,精确度高的结论;通过对不同贮存环境的电池组进行比较,得出了贮存环境对可靠性具有影响的结论。
In this paper,the normal distribution function is used to analyze the load voltage of lithium battery pack,and the corresponding relationship between the fluctuation of load voltage and the structure of battery pack is obtained.The discharge reliability of lithium battery pack is evaluated by lognormal distribution function and binomial distribution function,and a sample is obtained for the reliability evaluation of lithium battery pack by lognormal distribution function.By comparing the batteries in different storage environments,it is concluded that the storage environment has an impact on reliability.
作者
王文莉
晏朝东
WANG Wenli;YAN Chaodong(Chongqing Qianwei Technology Group Co.,Ltd.,Chongqing 401121,China)
出处
《自动化与仪器仪表》
2019年第6期108-113,117,共7页
Automation & Instrumentation
关键词
锂电池组
可靠性
正态分布
对数正态分布
lithium battery pack
reliability
normal distribution
lognormal distribution
