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    Methods and systems for adjusting battery voltage limits
    2.
    发明授权
    Methods and systems for adjusting battery voltage limits 有权
    调整电池电压限制的方法和系统

    公开(公告)号：US09190853B2

    公开(公告)日：2015-11-17

    申请号：US13951246

    申请日：2013-07-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Kurt M. Johnson ,  Robert C. Baraszu ,  Zachary D. Bylsma ,  Ashley McAllister ,  George Robison

    IPC: H02J7/00 ,  H02J7/14 ,  H02J7/04 ,  H02J9/00 ,  G01N27/416

    CPC classification number: H02J7/00 ,  B60L3/12 ,  B60L11/1862 ,  B60L11/1866 ,  B60L2240/547 ,  G01N27/416 ,  H02J7/0014 ,  H02J7/04 ,  H02J7/14 ,  H02J9/00 ,  Y02T10/7016 ,  Y02T10/7044 ,  Y02T10/7055 ,  Y02T10/7061 ,  Y02T10/7072 ,  Y02T10/72

    Abstract: Methods and systems for adjusting the voltage limits of a battery. In some implementations, voltage data may be received from each of a plurality of battery sections of a vehicle battery. A voltage offset for the vehicle battery may be calculated using the voltage data. The voltage offset may be calculated by determining a difference between an average voltage taken from each of the plurality of battery sections and at least one of a minimum voltage of all of the battery cells and an average cell voltage from a battery section having the lowest average cell voltage. The voltage offset may be applied to dynamically adjust a voltage limit associated with the vehicle battery so as to prevent any of the battery cells in the vehicle battery from exceeding the voltage limit.

    Abstract translation: 用于调整电池电压限制的方法和系统。 在一些实施方式中，可以从车辆电池的多个电池部分中的每一个接收电压数据。 可以使用电压数据来计算车辆电池的电压偏移。 可以通过确定从多个电池部分中的每一个获取的平均电压与所有电池单元的最小电压中的至少一个和来自具有最低平均值的电池部分的平均电池电压之间的差来计算电压偏移 电池电压。 可以施加电压偏移以动态地调整与车辆电池相关联的电压限制，以防止车辆电池中的任何电池单元超过电压限制。

    Systems and methods for estimating battery system energy capability
    3.
    发明授权
    Systems and methods for estimating battery system energy capability 有权

    公开(公告)号：US10338150B2

    公开(公告)日：2019-07-02

    申请号：US14491737

    申请日：2014-09-19

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Kurt M. Johnson ,  Brian J. Koch

    IPC: G01R31/36 ,  G01R31/3835 ,  G01R31/367

    Abstract: System and methods for determining battery system energy capability in a vehicle are presented. A voltage offset of a battery system may be determined based on comparison of an open circuit voltage of the battery system and a measured voltage. An estimated remaining pack energy may be determined based, at least in part, on the voltage offset. Similarly, an estimated total pack energy may be determined based, at least in part, on the voltage offset. An energy capability of the battery system may be determined based on the estimated remaining pack energy and the estimated total pack energy.

    DYNAMIC ADJUSTMENT OF BATTERY CURRENT LIMITS BASED ON USAGE
    5.
    发明申请
    DYNAMIC ADJUSTMENT OF BATTERY CURRENT LIMITS BASED ON USAGE 审中-公开

    公开(公告)号：US20170282746A1

    公开(公告)日：2017-10-05

    申请号：US15247266

    申请日：2016-08-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Robert C. Baraszu ,  Daniel R. Brouns ,  Patrick E. Frost ,  Kurt M. Johnson

    IPC: B60L11/18 ,  H02J7/00

    CPC classification number: B60L11/1864 ,  B60L11/1861 ,  B60L2240/549 ,  B60L2240/80 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/7061

    Abstract: A method for dynamically adjusting a battery current limit in a system having a battery pack includes determining a battery pack current as a charge current flowing into or a discharge current flowing from the battery pack, and also calculating a time-windowed average current for each of the charge current, the discharge current, and an RMS current of the battery pack. The battery current limit may be dynamically adjusted when any or all of the calculated time-windowed averages exceeds a corresponding calibrated control threshold. The battery current limit is a window-specific current limit that is greater than the calibrated control threshold and less than a static/fixed current limit for the battery pack. A system includes the battery pack, a sensor operable for measuring a current inflow/outflow to/from the battery pack, and a controller programmed to dynamically adjust the battery current limit using the above method.

    Systems and methods for estimating battery pack capacity
    6.
    发明授权
    Systems and methods for estimating battery pack capacity 有权
    用于估算电池组容量的系统和方法

    公开(公告)号：US09594121B2

    公开(公告)日：2017-03-14

    申请号：US14245685

    申请日：2014-04-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Patrick Frost ,  Patricia M. Laskowsky ,  Kurt M. Johnson

    IPC: G01R31/36

    CPC classification number: G01R31/362 ,  G01R31/3658

    Abstract: System and methods for estimating a capacity of a battery are presented. A measure of data skewness may be calculated from a battery system terminal voltage measurement. Inflection points in the data skewness of the terminal voltage measurement may align with transition points associated with a battery system. These transitions points may be associated with known SOCs determined from testing and/or characterization of the battery system. Using the detected transitions and associated SOCs and an indication of an accumulated charge provided to/from the battery between the transitions, an estimated capacity of the battery system may be determined.

    Abstract translation: 介绍了用于估计电池容量的系统和方法。 可以从电池系统端子电压测量来计算数据偏度的度量。 端子电压测量的数据偏差中的变化点可以与与电池系统相关联的过渡点对准。 这些转换点可以与从电池系统的测试和/或表征确定的已知SOC相关联。 使用检测到的转变和相关的SOC以及在转换之间提供给/从电池的累积电荷的指示，可以确定电池系统的估计容量。

    Systems and methods for estimating battery pack capacity during charge sustaining use
    7.
    发明授权
    Systems and methods for estimating battery pack capacity during charge sustaining use 有权
    用于在电荷持续使用期间估计电池组容量的系统和方法

    公开(公告)号：US09535129B2

    公开(公告)日：2017-01-03

    申请号：US14307192

    申请日：2014-06-17

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Kurt M. Johnson ,  Patrick Frost ,  Joon Hwang ,  Damon R. Frisch

    IPC: H02J7/00 ,  G01R31/36

    CPC classification number: G01R31/36 ,  G01R31/361 ,  G01R31/3689 ,  Y02T10/7005

    Abstract: System and methods for estimating a capacity of a battery are presented. In certain embodiments, charge and discharge current throughput data may be separately accumulated during operation of a battery system (e.g., during a charge sustaining operation of vehicle associated with the battery system). Charge and discharge voltage-based state of charge movement data may be further separately accumulated. Upon accumulating sufficient data, estimated charge and discharge battery capacities may be determined based on the accumulated data.

    Abstract translation: 介绍了用于估计电池容量的系统和方法。 在某些实施例中，在电池系统的操作期间（例如，在与电池系统相关联的车辆的充电维持操作期间），充电和放电电流吞吐量数据可以单独地累积。 可以进一步分别累积基于充电和放电电压的充电状态的运动数据。 在累积足够的数据时，可以基于累积数据来确定估计的充电和放电电池容量。

    Methods and systems for determining whether a voltage measurement is usable for a state of charge estimation
    8.
    发明授权
    Methods and systems for determining whether a voltage measurement is usable for a state of charge estimation 有权
    用于确定电压测量是否可用于充电状态估计的方法和系统

    公开(公告)号：US09267995B2

    公开(公告)日：2016-02-23

    申请号：US13717958

    申请日：2012-12-18

    Applicant: GM Global Technology Operations LLC

    Inventor： Kurt M. Johnson ,  Brett B. Stawinski ,  Brian J. Koch ,  Damon R. Frisch ,  Patrick Frost

    IPC: G01R31/36

    CPC classification number: G01R31/362 ,  G01R31/3648

    Abstract: Systems and methods for improvements in battery state of charge accuracy, charge termination consistency, capacity estimation, and energy delivery consistency. More specifically, embodiments herein detail systems and methods using an algorithm to calculate the change in state of charge for a given voltage change (dSOC/dV) at a given temperature in a region around the present voltage measurement or estimation and to set a signal indicating when the measurement should not be used due to potential error.

    Abstract translation: 电池充电精度，充电终端一致性，容量估计和能量传输一致性的改进的系统和方法。 更具体地，本文的实施例详细描述了使用算法计算在当前电压测量或估计周围的区域中给定温度下的给定电压变化（dSOC / dV）的电荷状态变化的系统和方法，并且设置指示 当由于潜在的错误而不应使用测量时。

    Dynamic adjustment of battery current limits based on usage
    10.
    发明授权
    Dynamic adjustment of battery current limits based on usage 有权

    公开(公告)号：US10160342B2

    公开(公告)日：2018-12-25

    申请号：US15247266

    申请日：2016-08-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Robert C. Baraszu ,  Daniel R. Brouns ,  Patrick E. Frost ,  Kurt M. Johnson

    IPC: H02J7/00 ,  B60L11/18

    Abstract: A method for dynamically adjusting a battery current limit in a system having a battery pack includes determining a battery pack current as a charge current flowing into or a discharge current flowing from the battery pack, and also calculating a time-windowed average current for each of the charge current, the discharge current, and an RMS current of the battery pack. The battery current limit may be dynamically adjusted when any or all of the calculated time-windowed averages exceeds a corresponding calibrated control threshold. The battery current limit is a window-specific current limit that is greater than the calibrated control threshold and less than a static/fixed current limit for the battery pack. A system includes the battery pack, a sensor operable for measuring a current inflow/outflow to/from the battery pack, and a controller programmed to dynamically adjust the battery current limit using the above method.

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