摘要
动力电池充放电效率是提升整车能量利用率的关键。文章从动力电池的工作原理出发,分析了影响动力电池充放电效率的因素,提出了一种充放电效率表征方法和试验方法;在此基础上,搭建了实验平台,并设计实验参数及要求,并针对某款电动汽车动力电池进行了实验及分析。结果表明:整车能量流分析不可忽视充放电效率的影响,不同充放电工况下,电池充放电效率随电流变化呈线性负相关的关系。
Charging-discharging efficiency of power batteries is the key to improve the energy utilization efficiency of the electric vehicle.Based on the working principle of Lithium-ion battery,the factors affecting the charging-discharging efficiency are analyzed in this paper,with a characterization method and test method of charging-discharging efficiency put forward.On this basis,an experimental platform is built and the experimental parameters and requirements are designed.And then,the experiments for a special power battery are carried out on this platform.The results show that the influence of charging-discharging efficiency cannot be neglected in vehicle energy flow analysis and it has a linear negative correla-tion with current under different conditions.
作者
许桢贤
谭淳洲
罗玲
Xu Zhenxian;Tan Chunzhou;Luo Ling(GAC Automotive Research&Development Center,Guangdong Guangzhou 511434)
出处
《汽车实用技术》
2019年第16期7-9,24,共4页
Automobile Applied Technology
关键词
动力电池
充放电效率
测试方法
变化特性
Power batteries
Charging-discharging efficiency
Testing method
Changing characteristics
