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25 条记录 (耗时 0.019 秒)

    METHOD AND SYSTEM FOR NOISE-TOLERANT RC RESPONSE PREDICTION
    21.
    发明申请
    METHOD AND SYSTEM FOR NOISE-TOLERANT RC RESPONSE PREDICTION 审中-公开

    公开(公告)号：US20200217899A1

    公开(公告)日：2020-07-09

    申请号：US16239188

    申请日：2019-01-03

    申请人： GM Global Technology Operations LLC

    发明人： Yue Fan ,  Russell K. Steele ,  Andrew C. Baughman ,  Peter Kung Chiang

    IPC分类号： G01R31/389 ,  H02J7/00 ,  B60L58/12 ,  B60L58/14 ,  G01R31/00 ,  G01R31/367

    摘要： An electrical system includes a voltage bus, voltage sensor(s) measuring a first voltage between a positive bus rail and electrical ground, and a second voltage between a negative bus rail and electrical ground, a bias resistor, and a controller. When the switch is closed, the controller measures four or more discrete voltage samples of the first and second voltages. The samples are grouped into first and second sample groups each having three discrete voltage samples, with the second and third voltage samples of the first group being the first and second samples of the second group. The controller estimates a steady-state voltage of the first and second voltages using the sample groups, prior to the first and second voltages converging on actual steady-state voltage values. The controller executes a corresponding control action when the steady-state voltage estimate is stable or unstable relative to a defined stability threshold.

    Battery cell voltage sensing circuit diagnostics
    22.
    发明授权
    Battery cell voltage sensing circuit diagnostics 有权

    公开(公告)号：US09857431B2

    公开(公告)日：2018-01-02

    申请号：US14339003

    申请日：2014-07-23

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Andrew C. Baughman

    IPC分类号： G01R31/36 ,  G01R31/02

    CPC分类号： G01R31/3658 ,  G01R31/026

    摘要： A system and method are disclosed for diagnosing an open circuit of a cell voltage sensing board. The board includes, for each cell, a line balancing resistor, a line sense resistor, and a gate. Each gate connects and disconnects a given line balancing resistor to and from a corresponding cell. A cell voltage is measured for a selected battery cell, and a controller determines if the selected battery cell is an uppermost or lowermost cell in the battery stack. A line sense resistance value is calculated for the selected battery cell using a first set of equations when the selected battery cell is the uppermost cell, a second set of equations when the selected battery cell is the lowermost cell, and a third set of equations when the selected battery cell is neither. A control action is executed when the calculated line sense resistance exceeds a calibrated resistance threshold.

    Method and system for determining a battery element voltage
    24.
    发明授权
    Method and system for determining a battery element voltage 有权
    用于确定电池元件电压的方法和系统

    公开(公告)号：US09213068B2

    公开(公告)日：2015-12-15

    申请号：US13803683

    申请日：2013-03-14

    申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

    发明人： Andrew C. Baughman ,  James C. Gibbs

    IPC分类号： G01N27/416 ,  G01R31/36 ,  H01M10/48 ,  H01M10/42

    CPC分类号： G01R31/362 ,  H01M10/48 ,  H01M2010/4271 ,  H01M2220/20

    摘要： A method for estimating the voltage of a battery element of a vehicle battery system is provided. The method comprises providing a balancing/sensing circuit having a series combination of a balancing switch and a balancing resistive element electrically connected in parallel with the battery element, and measuring the voltage across the combination of the balancing switch and balancing resistive element when the balancing switch is presumed to be in a “closed” state. The method further comprises deriving a compensated value for the measured voltage using empirically-derived data, wherein the compensated value compensates for a voltage drop occurring in the balancing/sensing circuit when the balancing switch is in the “closed” state and represents an estimate of the voltage of the battery element. A battery system is also provided that includes a battery element, a balancing/sensing circuit, a sensor, and a control module configured to perform the method described above.

    摘要翻译： 提供了一种用于估计车载电池系统的电池元件的电压的方法。 该方法包括提供平衡/感测电路，其具有与电池元件并联电连接的平衡开关和平衡电阻元件的串联组合，并且当平衡开关和平衡电阻元件的平衡开关 被认定处于“封闭”状态。 该方法还包括使用经验导出的数据导出测量电压的补偿值，其中当平衡开关处于“关闭”状态时，补偿值补偿在平衡/感测电路中发生的电压降，并且代表 电池元件的电压。 还提供一种电池系统，其包括电池元件，平衡/感测电路，传感器和被配置为执行上述方法的控制模块。