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首页> 外文会议>Annual Conference of the IEEE Industrial Electronics Society >Comparative Study of State of Charge Estimation Under Different Open Circuit Voltage Test Conditions for Lithium-Ion Batteries
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Comparative Study of State of Charge Estimation Under Different Open Circuit Voltage Test Conditions for Lithium-Ion Batteries

机译：锂离子电池不同开路电压测试条件下荷电状态估算的比较研究

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摘要

The state of charge (SOC) is an essential indicator needed for a proper and safe operation of a battery. A large majority of methods used to estimate SOC rely on the open circuit voltage (OCV) curve. The OCV-SOC relationship is characteristic of the battery chemistry but it may also be affected by the temperature, aging or even the measurement procedure. In this work, the effect of these factors on the OCV curve is analyzed and their influence on the SOC estimation is studied. For this purpose an extended Kalman filter (EKF) has been used to compare the SOC estimation performance under different conditions. Also, the results obtained by two different methods have been compared, at two different aging states and various temperatures in the range 5-40◦C.
机译：充电状态（SOC）是确保电池正常安全运行所必需的重要指标。用于估算SOC的大多数方法都依赖于开路电压（OCV）曲线。 OCV-SOC关系是电池化学性质的特征，但它也可能受温度，老化甚至测量程序的影响。在这项工作中，分析了这些因素对OCV曲线的影响，并研究了它们对SOC估计的影响。为此，已使用扩展卡尔曼滤波器（EKF）来比较不同条件下的SOC估计性能。此外，还比较了在两种不同的老化状态和5-40范围内的各种温度下，通过两种不同方法获得的结果 ◦ C。

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