摘要
以常用磷酸铁锂电池为研究对象,分析了电池欧姆内阻特性在不同放电倍率下的变化关系。通过混合脉冲功率特性(Hybrid Pulse Power Characteristic,HPPC)实验法,分析获得了电池欧姆内阻与放电倍率和荷电状态(State of Charge,SOC)之间的关系。研究结果表明,相同放电倍率下,电池欧姆内阻随着电池SOC的减小而增大;相同电池SOC状态下,电池欧姆内阻随着放电电流的增大而增大,从而明确了电池欧姆内阻受放电倍率和SOC共同影响。
Taking the common lithium iron phosphate battery as the research object,there is having analyzed the changing relation of battery ohmic resistance characteristics in different discharge rate.By the Hybrid Pulse Power Characteristic（HPPC） experiment method,the relationship between ohmic resistance of the battery and the discharge rate and state of charge（SOC） has analyzed and obtained.The result of the research show that,under the same discharge rate,the ohmic resistance increases with the decrease of battery SOC.Besides under the same battery SOC,the ohmic resistance increased with the increasing discharge current.And last,it has cleared about the influence of ohmic resistance,which is not only affected by discharge rate,but also the SOC.
出处
《电源世界》
2016年第9期36-38,共3页
The World of Power Supply
基金
绵阳市科技计划项目(15G-03-3)
关键词
锂电池
放电倍率
荷电状态
欧姆内阻
Lithium battery
Discharge rate
State of charge
Ohmic resistance
