中文摘要：

以锂电池RC等效模型为基础,研究不同环境温度下对RC等效模型参数的影响。在不同温度的环境下,分别对锂电池进行充放电实验,标定锂电池容量,研究温度对锂电池放电能力的影响;取充放电过程中电压的平均值,计算开路电压,研究温度对开路电压的影响;通过采集的充放电数据,辨识不同温度下锂电池欧姆内阻、极化内阻、等效电容和时间常数,研究其温度影响。随着环境温度的上升,锂电池容量和等效电容上升趋于缓慢,开路电压和时间常数变化不大,欧姆内阻与极化内阻下降趋于缓慢。

英文摘要：

To study the influence of temperature on parameters of power lithium-ion battery based on RC equivalent circuit at different ambient temperatures, the capacity of power lithium-ion battery was calibrated by charge and discharge experiments; the average voltage during charging and discharging was calculated; the parameters including ohmic resistance, polarization resistance, equivalent capacitance and time constant were identified by collecting charge and discharge data. As the ambient temperature rises, lithium-ion battery capacity and the equivalent capacitance raise slowly, little change in the open circuit voltage and the time constant, ohmic resistance and polarization resistance decline tends to slow.