公开(公告)号：WO2017095622A1

公开(公告)日：2017-06-08

申请号：PCT/US2016/062007

申请日：2016-11-15

申请人： BATTELLE ENERGY ALLIANCE, LLC

发明人： SAZHIN, Sergiy Victorovich ,  DUFEK, Eric J. ,  GERING, Kevin L.

IPC分类号： G01R31/02 ,  G01R19/12 ,  G01R19/165 ,  G01R31/36 ,  H01M10/44 ,  H01M10/48

CPC分类号： G01R31/3606 ,  G01R31/003 ,  G01R31/025 ,  G01R31/3648 ,  G01R31/3658 ,  H01M10/42 ,  H01M10/425

摘要： Systems and methods for determining self discharge currents in an energy storage cell and detecting internal shorts are disclosed. A system includes a DC voltage source configured to provide a constant test voltage selected to be less than an open circuit voltage of an energy storage cell to the energy storage cell. The system also includes a current measuring device operably coupled between the DC voltage source and the energy storage cell, and control circuitry operably coupled to the current measuring device. A method includes applying the constant test voltage, and measuring the test current flowing between the DC voltage source and the energy storage cell until after the test current switches from a negative current to a positive current. The method also includes determining a self discharge current of the energy storage cell by analyzing the measured test current with computational models that capture physical processes tied to the test methods.

摘要翻译： 公开了用于确定能量存储单元中的自放电电流并检测内部短路的系统和方法。 一种系统包括DC电压源，该DC电压源被配置为提供恒定的测试电压，该恒定的测试电压被选择为小于能量存储单元的能量存储单元的开路电压。 该系统还包括可操作地耦合在DC电压源和能量存储单元之间的电流测量设备以及可操作地耦合到电流测量设备的控制电路。 一种方法包括施加恒定的测试电压，并且测量直流电压源和能量存储单元之间流过的测试电流，直到测试电流从负电流切换到正电流之后。 该方法还包括通过利用捕获与测试方法相关联的物理过程的计算模型分析测量的测试电流来确定能量存储单元的自放电电流。