车用动力电池系统低温充电加热方法研究  

Research on Low Temperature Charging and Heating Method of Vehicle Power Battery System

作　　者：栗晓杰 高雅 郭凤刚 许紫光 Li Xiaojie;Gao Ya;Guo Fenggang;Xu Ziguang

机构地区：[1]北汽福田汽车股份有限公司,北京市昌平区102200

出　　处：《时代汽车》2021年第19期97-98,共2页Auto Time

摘　　要：本文研究了电池系统在低温下采用液热和加热膜加热方式下的充电性能,实验表明不同加热方式电池系统的充电容量和能量接近,但温升速率、充电时间以及充电末端温差有明显差异。-20℃下电池系统采用液热串联和并联方式温升速率分别为0.11℃/min和0.22℃/min;总充电时间分别为349min和221min;温差分别为4℃和6℃,液热并联比串联方式温升速率更高且总充电时间更短。采用加热膜加热温升速率可达到0.5℃/min,-20℃下充电时间为171min,但该加热方式电池温差较大,约为9℃。采用液热+加热膜加热方式温升速率约等于液热和加热膜加热两种方式分别加热温升速率之和。This paper studies the charging performance of the battery system under low temperature using liquid heat and heating film heating.Experiments show that the charging capacity and energy of different heating methods are similar to that of the battery system,but the temperature rise rate,charging time and temperature difference at the end of the charge are obvious difference.At-20℃,the battery system adopts liquid-heat series and parallel methods.The temperature rise rate is 0.11℃/min and 0.22℃/min respectively;the total charging time is 349min and 221min respectively;the temperature difference is 4℃and 6℃respectively,and the liquid-heat parallel ratio The series method has a higher temperature rise rate and a shorter total charging time.The temperature rise rate can reach 0.5°C/min by using the heating film,and the charging time at-20°C is 171min,but the battery temperature difference of this heating method is relatively large,about 9°C.The temperature rise rate of the liquid heat+heating film heating method is approximately equal to the sum of the two heating methods of liquid heat and heating film heating.

关 键 词：动力电池系统 低温充电 加热方法 

分 类 号：TM9[电气工程—电力电子与电力传动]