公开(公告)号：US06388447B1

公开(公告)日：2002-05-14

申请号：US09707476

申请日：2000-11-07

申请人： A. Daniel Hall ,  Richard A. Hudson

发明人： A. Daniel Hall ,  Richard A. Hudson

IPC分类号： H02J104

CPC分类号： H02J7/0083 ,  H02J7/0047 ,  H02J7/0081

摘要： The subject invention pertains to a method and apparatus for recalibrating and/or estimating a battery's state of charge (SOC). The subject invention is advantageous in situations where the battery infrequently, if ever, reaches a full charge and/or a full discharge. In a specific embodiment, the subject method and apparatus can utilize a battery's voltage and/or current, and/or changes in a battery's voltage and/or current with time, to recalibrate and/or estimate the battery's SOC. The method and apparatus of the subject invention can monitor various parameters relating to the condition of the battery in order to determine where on the open circuit voltage (OCV) versus SOC curve, the dOCV/dSOC versus SOC curve, and/or d2OCV/dSOC2 versus SOC curve the curve the battery is and, in a specific embodiment, when the battery reaches inflection point of the OCV versus SOC curve. Alternatively, the second derivative of the curve can be monitored to determine when the battery is outside a certain region, such as the 30% to 70% SOC region. If desired, the variation of the OCV versus SOC curve with respect to temperature and/or battery age can be taken into account during the determination of SOC in order to enhance the accuracy of such SOC determination.

摘要翻译： 本发明涉及用于重新校准和/或估计电池充电状态（SOC）的方法和装置。 本发明在电池很少（如果有的话）达到完全充电和/或完全放电的情况下是有利的。 在具体实施例中，本方法和装置可以利用电池的电压和/或电流，和/或随时间改变电池的电压和/或电流，以重新校准和/或估计电池的SOC。 本发明的方法和装置可以监测与电池状况相关的各种参数，以便确定开路电压（OCV）对SOC曲线，dOCV / dSOC对SOC曲线和/或d2OCV / dSOC2 相对于SOC曲线，电池的曲线，在具体实施例中，当电池达到OCV与SOC曲线的拐点时。 或者，可以监视曲线的二阶导数，以确定电池何时在特定区域外，例如30％至70％的SOC区域。 如果需要，在SOC的确定期间可以考虑OCV与SOC曲线相对于温度和/或电池寿命的变化，以便提高这种SOC确定的准确性。

公开(公告)号：US08374807B2

公开(公告)日：2013-02-12

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 are provided for estimating a state of charge (SOC) of a battery. Curves are generated to expresses a relationship between a first parameter and an SOC over a region of interest. A voltage and a current of the battery during a period of time are measured to create a set of voltage and current data, which is then processed to create a set of processed data. The processed data is then combined with the generated curves to generate processed data as a function of SOC. A curve is generated that evaluates each SOC for accuracy and chance likelihood of fit. An SOC that minimizes both the error and chance is selected and output for display to the user on a user interface.

摘要翻译： 提供了一种用于估计电池的充电状态（SOC）的方法和装置。 生成曲线以表示感兴趣区域上的第一参数和SOC之间的关系。 测量电池在一段时间内的电压和电流，以创建一组电压和电流数据，然后对其进行处理以创建一组处理的数据。 然后将经处理的数据与生成的曲线组合以产生作为SOC的函数的处理数据。 产生一个曲线，评估每个SOC的准确性和机会拟合的可能性。 选择最小化误差和机会的SOC并输出以在用户界面上向用户显示。

公开(公告)号：US07212934B1

公开(公告)日：2007-05-01

申请号：US11370379

申请日：2006-03-06

申请人： A. Daniel Hall ,  Francis J. Davies

发明人： A. Daniel Hall ,  Francis J. Davies

IPC分类号： G01R23/00 ,  G01R27/00

CPC分类号： G01R31/3658 ,  G01R31/3662 ,  G01R31/3679

摘要： Method and system are disclosed for determining individual string resistance in a network of strings when the current through a parallel connected string is unknown and when the voltage across a series connected string is unknown. The method/system of the invention involves connecting one or more frequency-varying impedance components with known electrical characteristics to each string and applying a frequency-varying input signal to the network of strings. The frequency-varying impedance components may be one or more capacitors, inductors, or both, and are selected so that each string is uniquely identifiable in the output signal resulting from the frequency-varying input signal. Numerical methods, such as non-linear regression, may then be used to resolve the resistance associated with each string.

摘要翻译： 公开了当通过并联连接的串的电流是未知的以及串联连接的串上的电压是未知的时，用于确定串联网络中的单个串电阻的方法和系统。 本发明的方法/系统包括将具有已知电特性的一个或多个频率变化阻抗分量连接到每个串并将频率变化的输入信号施加到串的网络。 频率变化阻抗分量可以是一个或多个电容器，电感器或两者，并且被选择为使得每个串在由频率变化输入信号产生的输出信号中是唯一可识别的。 然后可以使用诸如非线性回归的数值方法来解析与每个字符串相关联的电阻。