中文摘要：

大容量锂离子电池拥有优越的性能,通过SOC的精确估算才能使其工作在最优状态,充分发挥性能,提高经济效益。为了提高大容量锂离子电池SOC估算的准确性,总结了SOC估算中的一些方法,包括放电实验法、安时积分法、开路电压法、卡尔曼滤波法、神经网络法和电化学阻抗谱法;介绍了各种SOC估算方法的原理;讨论了各种SOC估算方法应用中存在的优缺点。

英文摘要：

The high capacity lithium-ion battery has excellent performance, and only accurate estimation of the SOC can make it work in the optimal state and improve economic efficiency. In order to improve SOC estimation accuracy, some ways in SOC estimation were summarized, including discharge test, ampere hour measurement, open circuit voltage, Kalman filtering, artificial neural network and electrochemical impedance spectroscopy. The principles of SOC estimation methods were introduced. The advantages and disadvantages of these methods during applications were discussed.