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CN109828215A 一种提升电池单体SOC估算精度的方法和系统 无效 - 驳回

一种提升电池单体SOC估算精度的方法和系统
摘要：
本申请公开了一种提升电池单体SOC估算精度的方法和系统，涉及电池检测技术领域，解决了现有技术中，电池单体SOC估算对精确噪声信息过于依赖、误差难以修正、估算精度差的技术问题。本申请的提升电池单体SOC估算精度的方法包括：获取动力电池的数据参数；基于安时积分法获取动力电池的第一SOC；根据SOC查表法获取动力电池的第二SOC；根据第三方法获取动力电池的第三SOC；根据第一SOC、第二SOC和第三SOC计算获得动力电池的第四SOC；判断第一SOC、第二SOC、第三SOC相对于第四SOC的离散度是否在误差范围内；响应于在误差范围内，第四SOC为SOC的最终估计值。本申请主要用于电池单体SOC估算。
摘要（英）：

The present application discloses a method and system for improving SOC estimation accuracy of a battery cell, and relates to the technical field of battery detection. The technical problems are solved that SOC estimation of the battery cell depends too much on accurate noise information, errors are difficult to correct and the estimation precision is poor in the prior art. The method comprises the steps of: obtaining data parameters of a power battery; obtaining a first SOC of the power battery based on an ampere-hour integration method; obtaining second SOC of the power battery according toa SOC table method; obtaining third SOC of the power battery according to a third method; calculating and obtaining fourth SOC of the power battery according to the first SOC, the second SOC and the third SOC; determining whether the dispersions of the first SOC, the second SOC and the third SOC relative to the fourth SOC are in an error range or not; and responding to the error range, allowing the fourth SOC to be the final estimation value of the SOC. The method and the system for improving SOC estimation accuracy of the battery cell are mainly used for SOC estimation of the battery cell.

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