不同环境温度下电动汽车充电性能对比研究

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Comparative Study on Charging Performance of Electric Vehicle under Different Ambient Temperatures*

Xiong Xingwang，Wang Zhaohui，Li Yang，Xie Ning，Liu Shanming(CATARC New Energy Vehicle Test Center（Tianjin）Co.，Ltd.，Tianjin ,China）

【Abstract】 Four kinds of ambient temperature 40% ， 25°C ， 0∘C and -10% were selected，under which the test vehicle was charged from 10% SOC 100% SOC to compare the influence of ambient temperature on the charging performance of the electric vehicle.The experimental results show that the lower the temperature under low-temperature environment， the longer the total charging time is.Under -10% environment， the charging time is greater than 0% While under and 40% environment， the total charging time is almost equal and less than -10∘C and 0% .There is no significant diferencefor the totalcharging energyunder diferent environmental temperature conditions.The lower the temperatureunder low-temperature environment，the lower theaverage charging rate during theentire charging process. The average charging rate under -10∘C is smaller than 0% . While under 25°C ， the average charging rate is larger than 40% ，and the both of which are significantly larger than 0∘C and -10*C.WhenSOC is fully charged to 100% ， maximum temperature of the battery under different ambient temperature conditions is almost the same.

【Key words】 ambient temperature； charging time； charging energy；average charging rate

0 引言

锂离子动力电池广泛应用于市场上的新能源汽车，目前纯电动轿车主要搭载磷酸铁锂电池或三元锂电池。（剩余9201字）