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    Control of device having multiple rechargeable packs with different capacities for optimal energy delivery
    2.
    发明授权
    Control of device having multiple rechargeable packs with different capacities for optimal energy delivery 有权

    公开(公告)号：US11052783B2

    公开(公告)日：2021-07-06

    申请号：US16433457

    申请日：2019-06-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： James C. Gibbs ,  Brandon R. Jones ,  Garrett M. Seeman

    IPC: B60L53/66 ,  H02J7/00 ,  B60L58/18

    Abstract: System and method of controlling operation of a device having multiple rechargeable packs configured to store energy. The multiple rechargeable packs include at least one primary pack characterized by a first capacity and at least one auxiliary pack characterized by a second capacity, the first capacity being greater than the second capacity. A controller is configured to selectively command one or more of the multiple rechargeable packs to begin at least one of discharging and charging. When an estimated end of trip time is less than or equal to a discharging time of the at least one auxiliary pack, the discharging of the at least one auxiliary pack is begun. When the estimated end of trip time is greater than the discharging time, the discharging is delayed until the respective state of charge of the at least one primary pack reaches a first threshold.

    METHOD AND SYSTEM FOR DETERMINING A BATTERY ELEMENT VOLTAGE
    4.
    发明申请
    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：US20140266221A1

    公开(公告)日：2014-09-18

    申请号：US13803683

    申请日：2013-03-14

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Andrew C. Baughman ,  James C. Gibbs

    IPC: G01R31/36

    CPC classification number: G01R31/362 ,  H01M10/48 ,  H01M2010/4271 ,  H01M2220/20

    Abstract: 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.

    Abstract translation: 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。

    ELECTRIFIED POWERTRAIN WITH METHOD FOR DETERMINING BATTERY LIMITS BASED ON CELL FACTORS
    6.
    发明申请
    ELECTRIFIED POWERTRAIN WITH METHOD FOR DETERMINING BATTERY LIMITS BASED ON CELL FACTORS 有权

    公开(公告)号：US20220271552A1

    公开(公告)日：2022-08-25

    申请号：US17184968

    申请日：2021-02-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： James C. Gibbs ,  Andrew M. Zettel ,  Calvin Goodman ,  Rajesh Nagappala

    IPC: H02J7/00 ,  B60L50/51 ,  B60L50/60 ,  B60L58/12

    Abstract: A method for adapting a usage level of a battery pack includes measuring cell sense data for each respective battery cell using a cell sense circuit, the cell sense data including a cell voltage, current, and temperature. The method includes processing the cell sense data, for each respective battery cell, through multiple battery state functions of a controller to generate numeric cell degradation values (CDVs). The battery state functions are calibrated relationships of the cell sense data to predetermined battery fault conditions. Thereafter, the method includes automatically adapting the usage level of the battery pack during operation of the battery pack, via the controller, based on the numeric CDVs. An electric powertrain system includes the battery pack, cell sense circuit, a rotary electric machine, and a controller configured to execute the above method.

    Methods and systems for determining a characteristic of a vehicle energy source
    8.
    发明授权
    Methods and systems for determining a characteristic of a vehicle energy source 有权
    用于确定车辆能量源的特性的方法和系统

    公开(公告)号：US09547045B2

    公开(公告)日：2017-01-17

    申请号：US14172700

    申请日：2014-02-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： James C. Gibbs

    IPC: H02J7/00 ,  H02J7/14 ,  G01R31/36 ,  G01R19/165 ,  H01M10/48 ,  H01M10/44

    CPC classification number: G01R31/3624 ,  G01R19/16542 ,  G01R31/362 ,  G01R31/3648 ,  H01M10/441 ,  H01M10/482 ,  H02J7/0014 ,  H02J7/0021 ,  H02J7/0047

    Abstract: Methods, apparatus and systems are provided for determining a characteristic of an energy source. One exemplary method involves obtaining a measured current associated with the energy source using a current sensor and obtaining a measured voltage associated with the energy source. In response to identifying an absence of an anomalous condition of the current sensor based on the measured current, the method determines a current-compensated value for the characteristic based at least in part on the measured voltage and the measured current. In response to identifying the anomalous condition of the current sensor based on the measured current, the method determines an uncompensated value for the characteristic based at least in part on the measured voltage.

    Abstract translation: 提供了用于确定能量源的特性的方法，装置和系统。 一个示例性方法包括使用电流传感器获得与能量源相关联的测量电流并获得与能量源相关联的测量电压。 响应于基于测量的电流来识别当前传感器的异常状况，该方法至少部分地基于所测量的电压和所测量的电流来确定特性的电流补偿值。 响应于基于测量的电流来识别电流传感器的异常状况，该方法至少部分地基于所测量的电压来确定该特性的无补偿值。

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