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    ESTIMATION OF BATTERY POWER CAPABILITY IN A TORQUE-GENERATING SYSTEM
    2.
    发明申请
    ESTIMATION OF BATTERY POWER CAPABILITY IN A TORQUE-GENERATING SYSTEM 审中-公开

    公开(公告)号：US20170343613A1

    公开(公告)日：2017-11-30

    申请号：US15168742

    申请日：2016-05-31

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Patrick E. Frost ,  Rory B. Fraga ,  Patricia M. Laskowsky ,  Alexander K. Suttman

    IPC: G01R31/36

    CPC classification number: G01R31/3651 ,  B60L11/1851 ,  B60L11/1861 ,  B60W20/13

    Abstract: A method for estimating battery power capability in a torque-generating system having a battery pack with battery cells includes calculating a voltage spread as a difference between an average and minimum cell voltage of the battery pack. The method also includes increasing a calibrated voltage control limit by an offset that is based on a magnitude of the voltage spread, doing so when the minimum cell voltage is less than the control limit, and recording the offset in a memory location referenced by pack operating conditions. Further, the power capability is estimated using the recorded offset when the battery pack operates under conditions that are the same as the operating conditions, and then executing a control action of the system using the estimated power capability. A torque-generating system includes the battery pack, an electric machine, and a controller programmed to execute the above-described method.

    Vehicle battery system balancing systems and methods
    3.
    发明授权
    Vehicle battery system balancing systems and methods 有权
    车载电池系统平衡系统及方法

    公开(公告)号：US09236749B2

    公开(公告)日：2016-01-12

    申请号：US13858769

    申请日：2013-04-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： James C. Gibbs ,  Rory B. Fraga

    IPC: H02J7/00 ,  G01R31/36 ,  B60L11/18

    CPC classification number: H02J7/0014 ,  B60L11/1862 ,  B60L11/1866 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  Y02T10/7016 ,  Y02T10/7044 ,  Y02T10/7055 ,  Y02T10/7061

    Abstract: System and methods for balancing a vehicle battery system are presented. In certain embodiments, a method for balancing a vehicle battery system including a plurality of sections may include calculating a plurality of quanta of energy required for each of the plurality of sections to reaching a balancing point. Based at least in part on the calculated plural of quanta of energy, it may be determined that the plurality of sections of the battery system are unbalanced. To balance the battery system, a balancing system may be selectively actuated to change the amounts of energy stored in one or more of the plurality of cells such that the plurality of quanta of energy are within a particular range.

    Abstract translation: 提出了平衡车载电池系统的系统和方法。 在某些实施例中，用于平衡包括多个部分的车辆电池系统的方法可以包括计算多个部分中的每一个以达到平衡点所需的多个能量量。 至少部分地基于计算的能量量子的多个，可以确定电池系统的多个部分是不平衡的。 为了平衡电池系统，可以选择性地启动平衡系统以改变存储在多个单元中的一个或多个单元中的能量的量，使得多个能量量级在特定范围内。

    Adaptive system and method for optimizing battery life in a plug-in vehicle
    4.
    发明授权
    Adaptive system and method for optimizing battery life in a plug-in vehicle 有权

    公开(公告)号：US10160340B2

    公开(公告)日：2018-12-25

    申请号：US15071588

    申请日：2016-03-16

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Todd P. Lindemann ,  Rory B. Fraga ,  Patricia M. Laskowsky ,  Patrick E. Frost

    IPC: B60L11/18 ,  B60L3/12

    Abstract: A system for optimizing life of a battery pack in a plug-in vehicle includes sensors for measuring battery performance data, including an open-circuit voltage, charging current, and/or temperature of the battery pack, a GPS receiver, a user interface, and a controller. The controller executes a method to monitor degradation of the battery pack using the performance data, and determines driving and charging histories for an operator of the vehicle using the measured battery performance data and a position signal from the GPS receiver. The histories identify the days, hours, and locations at which the operator has driven the vehicle and charged the battery pack. The controller identifies a state of charge data bin missing performance data or containing old performance data. The controller then controls a charging operation of the battery pack via a charging control signal, and records the measured battery performance data for the identified SOC data bin.

    Estimation of battery power capability in a torque-generating system
    7.
    发明授权
    Estimation of battery power capability in a torque-generating system 有权

    公开(公告)号：US10101402B2

    公开(公告)日：2018-10-16

    申请号：US15168742

    申请日：2016-05-31

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Patrick E. Frost ,  Rory B. Fraga ,  Patricia M. Laskowsky ,  Alexander K. Suttman

    IPC: G01R31/36 ,  B60L11/18 ,  B60W20/13

    Abstract: A method for estimating battery power capability in a torque-generating system having a battery pack with battery cells includes calculating a voltage spread as a difference between an average and minimum cell voltage of the battery pack. The method also includes increasing a calibrated voltage control limit by an offset that is based on a magnitude of the voltage spread, doing so when the minimum cell voltage is less than the control limit, and recording the offset in a memory location referenced by pack operating conditions. Further, the power capability is estimated using the recorded offset when the battery pack operates under conditions that are the same as the operating conditions, and then executing a control action of the system using the estimated power capability. A torque-generating system includes the battery pack, an electric machine, and a controller programmed to execute the above-described method.

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