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    Control of current in parallel battery strings
    1.
    发明授权
    Control of current in parallel battery strings 有权

    公开(公告)号：US10109899B1

    公开(公告)日：2018-10-23

    申请号：US15473684

    申请日：2017-03-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  SPIERS NEW TECHNOLOGIES INC.

    Inventor： Peter T. Karlson ,  Bryan Schultz ,  David S. Maxwell

    IPC: H01M10/63 ,  H01M10/613 ,  H01M10/615 ,  H01M10/6556 ,  H01M10/48 ,  H01M10/625 ,  H01M2/10 ,  H01M10/42

    Abstract: A battery assembly has a first battery string including a first plurality of cells connected in series. A second battery string is connected in parallel to the first battery string and includes a second plurality of cells connected in series. A fluid channel is operatively connected to the first and the second battery strings and includes a fluid flowing within. A controller is operatively connected to the first and the second battery strings. The controller is configured to determine a desired temperature differential between the first and the second temperatures of the battery strings based at least partially on a respective strength status of the first and the second battery strings. The controller is configured to control the first and the second currents, via the fluid in the fluid channel, based at least partially on the desired temperature differential.

    Systems and methods for detecting high-voltage contactor state of health
    3.
    发明授权
    Systems and methods for detecting high-voltage contactor state of health 有权
    检测高压接触器状态的系统和方法

    公开(公告)号：US09506992B2

    公开(公告)日：2016-11-29

    申请号：US14668784

    申请日：2015-03-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Robert C. Baraszu ,  Andrew J. Namou ,  David S. Maxwell

    IPC: G01R31/36 ,  G05D1/00

    CPC classification number: G01R31/3679 ,  G01R31/007 ,  G01R31/3277 ,  G01R31/3648 ,  G05D1/0055

    Abstract: Systems and methods are disclosed for determining a weld state of a contactor (e.g., normal, partially welded, and/or welded states) based on a variety of actuator coil characteristics during actuation. In some embodiments, the disclosed systems and methods may be utilized in connection with determining contactor weld states in a variety of contactor designs. In further embodiments, the disclosed systems and methods may utilize a probability weighted score accounting for contactor design characteristics and information obtained from a reference contactor to identify a weld state associated with a contactor device.

    Abstract translation: 公开了用于在致动期间基于各种致动器线圈特性来确定接触器的焊接状态（例如，正常，部分焊接和/或焊接状态）的系统和方法。 在一些实施例中，所公开的系统和方法可以用于确定各种接触器设计中的接触器焊接状态。 在另外的实施例中，所公开的系统和方法可以利用概率加权分数计算接触器设计特性和从参考接触器获得的信息来识别与接触器装置相关联的焊接状态。

    Systems and methods to protect against over-discharge in a battery system
    5.
    发明授权
    Systems and methods to protect against over-discharge in a battery system 有权
    防止电池系统过度放电的系统和方法

    公开(公告)号：US09395327B2

    公开(公告)日：2016-07-19

    申请号：US13690886

    申请日：2012-11-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Robert C. Baraszu ,  Kurt M. Johnson ,  Zachary D. Bylsma ,  Damon R. Frisch ,  Wei Liu ,  David S. Maxwell

    IPC: G01N27/416 ,  H01M10/48

    CPC classification number: G01N27/416 ,  H01M10/482 ,  H01M2220/20

    Abstract: A battery system may include a plurality of subdivisions, such as battery cells or sub-packs. A measurement system configured to determine a subdivision electrical parameter associated with each of a plurality of subdivisions. A battery control may identify a subdivision satisfying a criterion based on the plurality of subdivision electrical parameters. According to some embodiments, the battery control system may determine a ratio of the subdivision electrical parameter of the identified subdivision to the electrical parameter of the battery pack. The ratio may be used to scale the electrical parameter associated with the battery pack by the ratio. According to other embodiments, the subdivision electrical parameter associated with the identified subdivision may be provided to a battery state estimation system. The scaled electrical parameter or the electrical parameter associated with the identified subdivision may be used by a battery state estimation system to generate an estimated battery state.

    Abstract translation: 电池系统可以包括多个细分，诸如电池单元或子包。 一种测量系统，被配置为确定与多个子部分中的每一个相关联的细分电参数。 电池控制可以基于多个细分电参数识别满足标准的细分。 根据一些实施例，电池控制系统可以确定所识别的细分的细分电参数与电池组的电参数的比率。 该比率可以用于按比例缩放与电池组相关联的电参数。 根据其他实施例，可以将与所识别的细分相关联的细分电参数提供给电池状态估计系统。 缩放的电参数或与所识别的细分相关联的电参数可以由电池状态估计系统使用以产生估计的电池状态。

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