摘要
某纯电动汽车在电池温度变化较大情况下,若采用传统单体开路电压法估算SOC会引起SOC跳变、修正过缓、过陡问题,本文针对此现象,提出一种基于动力电池应用的SOC区间动态曲线修正方法。根据电池充放电状态确定目标SOC并计算跟随斜率,安时积分计算时利用跟随斜率加以修正并实时控制,动态修正,能有效解决SOC跳变、修正过缓、过陡问题。
In the case of a battery temperature change of a pure electric vehicle, the traditional mono-open circuit voltage method used to estimate SOC will cause SOC jump, too slow, too steep problems. In this paper, a dynamic curve correction method of SOC interval based on power battery application is proposed. According to the charge and discharge state of the battery, the target SOC was determined and the following slope was calculated. In ampere-hour integral calculation, the following slope was used for correction and real-time control and dynamic correction, which effectively solved the problems of SOC jump, too slow and too steep correction.
作者
焦红星
熊红红
张延星
JIAO Hong-xing;XIONG Hong-hong;ZHANG Yan-xing(Zhengzhou Vocational and Technical College,Zhengzhou 450100;Zhengzhou Shengda Economic and Trade Management Institute,Zhengzhou 451191;Yutong Bus New Energy Technology Department,Zhengzhou 410137,China)
出处
《汽车电器》
2022年第8期24-26,共3页
Auto Electric Parts
关键词
SOC
开路电压法
安时积分法
目标SOC
动态修正
SOC
open circuit voltage method
ampere integral method
target SOC
the dynamic correction
