公开(公告)号：US20100121591A1

公开(公告)日：2010-05-13

申请号：US12616593

申请日：2009-11-11

申请人： A. Daniel HALL

发明人： A. Daniel HALL

IPC分类号： G01R31/36

CPC分类号： G01R31/3651 ,  G01R31/3624

摘要： A method and apparatus for estimating a state of charge of a battery. The method may include generating one or more curves which expresses the a priori relationship between a first parameter and a state of charge (SOC) of a battery over a region of interest, taking a derivative of the generated one or more curves with respect to state of charge to generate a derived parameter with the SOC of the battery over the region of interest, transforming a combination of the generated one or more curves into one or more supplemental curves which express the a priori relationship between a second parameter with one or more of current (I) polarization current (Ip) and open circuit voltage (OCV), the voltage slope with respect to SOC (dOCV/dSOC), and any combination of (I, Ip, OCV and dOCV/dSOC), measuring a voltage and a current of the battery during a period of time to create a set of voltage and current data, processing the set of voltage and current data to create a set of processed data, combining one or more generated curves with the processed data to generate processed data as a function of SOC, regressing the process data function at multiple SOCs over the region of interest with respect to an equation which is representative of the battery to obtain values for parameters not associated with SOC and to generate a curve that evaluates each SOC for accuracy and chance likelihood of fit, selecting the SOC that minimizes both the error and chance occurrence, and outputting the selected SOC for display to the user on a user interface.

摘要翻译： 一种用于估计电池的充电状态的方法和装置。 该方法可以包括产生一个或多个曲线，该曲线表示在感兴趣区域上的电池的第一参数和充电状态（SOC）之间的先验关系，以相对于状态产生的一个或多个曲线的导数 以产生在所述感兴趣区域上的所述电池的SOC的导出参数，将所生成的一个或多个曲线的组合变换成一个或多个补充曲线，所述补充曲线表示第二参数与一个或多个 电流（I）极化电流（Ip）和开路电压（OCV），相对于SOC（dOCV / dSOC）的电压斜率和（I，Ip，OCV和dOCV / dSOC）的任意组合，测量电压和 在一段时间内电池的电流创建一组电压和电流数据，处理该组电压和电流数据以创建一组处理的数据，将一个或多个生成的曲线与经处理的数据组合以产生 作为SOC的函数的处理数据，相对于表示电池的方程来计算感兴趣区域上的多个SOC处的过程数据函数，以获得与SOC无关的参数的值，并生成评估每个SOC的曲线 为了准确性和偶然的拟合可能性，选择最小化误差和机会发生的SOC，并且在用户界面上将用于显示的所选择的SOC输出给用户。