电动汽车用锂电池SOC估算方法研究  

Research on SOC estimation method of lithium ion battery for electric vehicle

作　　者：张松[1] ZHANG Song(Department of Computer Science and Technology, Nanjing Nonnal University, Nanjing Jiangsu 210023, China)

机构地区：[1]南京师范大学计算机科学与技术学院,江苏南京210023

出　　处：《电源技术》2017年第12期1792-1794,共3页Chinese Journal of Power Sources

摘　　要：电动汽车用锂电池具备宽电压以及显著的两极化特点,会对电池荷电状态(SOC)造成一定的干扰,另外在电池组的差异性以及使用时间方面,SOC也存在较大的干扰。所以,SOC是电动汽车运转进程中相当关键的因素,是预防电池过度充放电的关键性参照,只有正确估算电池组SOC才可以更好地提升电动汽车的利用率,延长电池的使用年限,对汽车运转进行进一步的优化。研究了多种SOC估算方法,为电动汽车电池组的优化以及相应的管控提供了基础性的参照信息。Lithium-ion batteries for electric vehicle have wide voltage and significant polarization characteristics,having certain interference with the battery SOC.In the battery pack difference and service time,SOC has larger interference.SOC is a pivotal factor for the electric car operation process,so is the key reference for preventing battery excessive charging and discharging.The correct estimation of battery SOC can better improve the utilization rate of electric cars,boost battery life and optimize the car running.A variety of SOC estimation methods were studied,providing basic reference information for the battery optimization and corresponding control of electric car.

关 键 词：电动汽车 锂电池 SOC 估算方法 

分 类 号：TM912.9[电气工程—电力电子与电力传动]