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    SHAPE MEMORY ALLOY ACTIVE HATCH VENT
    2.
    发明申请
    SHAPE MEMORY ALLOY ACTIVE HATCH VENT 有权
    形状记忆合金活动座位通风口

    公开(公告)号：US20140349560A1

    公开(公告)日：2014-11-27

    申请号：US14328149

    申请日：2014-07-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  DYNALLOY, INC.

    Inventor： Paul W. Alexander ,  Xiujie Gao ,  Alan L. Browne ,  Mark A. Voss ,  Derek L. Patterson ,  Lei Hao ,  Chandra S. Namuduri ,  James Holbrook Brown ,  Aragorn Zolno ,  John N. Owens ,  Alexander Millerman ,  Kevin B. Rober ,  Suresh Gopalakrishnan ,  Sanjeev M. Naik

    IPC: B60J9/04 ,  B60H1/24 ,  B60H1/00

    CPC classification number: B60J9/04 ,  B60H1/00735 ,  B60H1/241 ,  B60H1/249

    Abstract: A vent assembly is disposed within an interior space of a vehicle for opening and closing fluid communication between the interior space and an exterior of the vehicle. The vent assembly includes a housing defining a plurality of openings and a plurality of vanes disposed in the openings. An actuator mechanism moves the vanes between an open position and a closed position, and includes a shaped memory alloy (SMA) member for actuating the vanes between the open and closed positions. The SMA member is activated when a hatch of the vehicle is opened to move the vanes into the open position and thereby open fluid communication between the interior space and the exterior to alleviate excessive air pressure buildup during closure of the hatch.

    Abstract translation: 排气组件设置在车辆的内部空间内，用于打开和关闭内部空间和车辆外部之间的流体连通。 通气组件包括限定多个开口的壳体和设置在开口中的多个叶片。 致动器机构使叶片在打开位置和关闭位置之间移动，并且包括用于在打开位置和关闭位置之间致动叶片的成形记忆合金（SMA）构件。 当车辆的舱口被打开以使叶片移动到打开位置并且由此打开内部空间和外部之间的流体连通时，SMA构件被激活，以减轻在舱口闭合期间累积过大的空气压力。

    System and method of making a cast induction rotor assembly having conductive bars
    3.
    发明授权
    System and method of making a cast induction rotor assembly having conductive bars 有权

    公开(公告)号：US12206285B2

    公开(公告)日：2025-01-21

    申请号：US18174879

    申请日：2023-02-27

    Applicant: GM Global Technology Operations LLC

    Inventor： Qigui Wang ,  John S. Agapiou ,  Liang Wang ,  Lei Hao ,  Daniel J. Wilson ,  Steven L Burkholder

    IPC: H02K1/26 ,  H02K15/02

    Abstract: An induction rotor assembly having conductive bars is provided. The assembly comprises a lamination stack comprising a body having a first end and second ends to define a longitudinal axis. The body has an outer circumferential portion extending from the first end to the second end. The outer portion has a plurality of walls defining open slots formed from the first end through the second end. The assembly further comprises a first ring disposed on the first end and a second ring disposed on the second end. The assembly further comprises a plurality of conductive bars extending between the first and second rings. Each conductive bar is disposed in one of the slots such that the respective conductive bar is in contact with the lamination stack and connects the first and second rings. Each bar comprises an inner portion and a conductive outer skin disposed about the inner portion.

    ENERGY TRANSFER AMONG MISMATCHED BATTERY SYSTEMS
    5.
    发明申请
    ENERGY TRANSFER AMONG MISMATCHED BATTERY SYSTEMS 有权

    公开(公告)号：US20240367549A1

    公开(公告)日：2024-11-07

    申请号：US18310768

    申请日：2023-05-02

    Applicant: GM Global Technology Operations LLC

    Inventor： Mohamed Ahmed Kamel Ahmed ,  Lei Hao ,  Chandra S. Namuduri

    IPC: B60L58/22 ,  B60L53/62 ,  H02J7/34

    Abstract: An energy transfer system includes a conversion device configured for partial power processing and configured to regulate current from a first battery system, and a controller configured to control the conversion device to adjust a first voltage of the first battery system to conform the first voltage to a second voltage of a second battery system, the second battery system connected in parallel with the first battery system by a bus. The conversion device is configured to receive power from the first battery system, cause a selected portion of the power to flow through a conversion stage to adjust the first voltage, the selected portion corresponding to a difference between the first voltage and the second voltage, cause a remaining portion of the power to flow directly to the bus and bypass the conversion stage, and output a current from the conversion device at the second voltage.

    SYSTEM AND METHOD OF MAKING AN ELECTRIC CONDUCTOR HAVING A CONDUCTIVE SKIN LAYER
    6.
    发明公开
    SYSTEM AND METHOD OF MAKING AN ELECTRIC CONDUCTOR HAVING A CONDUCTIVE SKIN LAYER 审中-公开

    公开(公告)号：US20240257996A1

    公开(公告)日：2024-08-01

    申请号：US18161496

    申请日：2023-01-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Qigui Wang ,  John S. Agapiou ,  Liang Wang ,  Lei Hao

    IPC: H01B13/00 ,  B23K20/02 ,  H01B5/02

    CPC classification number: H01B13/0036 ,  B23K20/023 ,  H01B5/02 ,  H01B13/0016 ,  B23K2101/38 ,  B23K2103/10

    Abstract: A method of making an electric conductor having a conductive skin layer. The method comprises providing a conductive member having a first width and a conductive layer disposed thereon for conductivity. The conductive layer has a second width to define a width ratio of the first width to the second width of 4:1 to 200:1. The conductive layer has greater conductivity than the conductive member. The method comprises disposing the conductive layer about the conductive member to define a conductive layered member and pressing the conductive layered member for mechanical contact to define a pressed layered member. The method comprises thermally treating the pressed layered member for diffusion between the conductive layer and the conductive member defining a diffused layered member. The method further comprises cooling the diffused layered member for diffusion bonding free of an intermetallic phase between the conductive layer and the conductive member.

    Power control system for switching battery configuration during driving
    9.
    发明授权
    Power control system for switching battery configuration during driving 有权

    公开(公告)号：US11984834B2

    公开(公告)日：2024-05-14

    申请号：US17699261

    申请日：2022-03-21

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Muhammad Hussain Alvi ,  Chandra S. Namuduri ,  Suresh Gopalakrishnan ,  Chunhao J. Lee ,  Lei Hao ,  Yue-Yun Wang ,  Rashmi Prasad

    IPC: H02J7/00 ,  H02P5/74 ,  H02P23/14

    CPC classification number: H02P5/74 ,  H02J7/0013 ,  H02J7/0063 ,  H02P23/14

    Abstract: A power control system comprises a battery system including N battery packs. A plurality of contactors selectively connects N battery packs of a battery system in a first configuration supplying a first voltage level, a second configuration supplying a second voltage level, and a disconnected configuration. M power inverters connect the battery system to M electric machines, respectively. A controller is configured to determine when to transition between the first configuration and the second configuration. The controller is configured to transition between the first configuration and the second configuration by causing one of a positive torque transient and a negative torque transient to be generated by at least one of the M electric machines, transitioning the battery system from one of the first configuration and the second configuration to the disconnected configuration, and transitioning from the disconnected configuration to the other one of the first configuration and the second configuration.

    Impedance estimation of power sources via motor inverter circuits
    10.
    发明授权
    Impedance estimation of power sources via motor inverter circuits 有权

    公开(公告)号：US11757391B1

    公开(公告)日：2023-09-12

    申请号：US17676535

    申请日：2022-02-21

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Lei Hao ,  Yue-Yun Wang ,  Steven E. Muldoon

    IPC: H02P23/14 ,  G01R27/02 ,  G01R31/389 ,  B60L15/20 ,  H02P27/08 ,  H02P29/68

    CPC classification number: H02P23/14 ,  B60L15/20 ,  G01R27/02 ,  G01R31/389 ,  H02P27/08 ,  H02P29/68

    Abstract: A motor drive system of a vehicle includes: an inverter that receives power from a power source via a bus, where the inverter is connected to a motor of the vehicle; a driver that drives the inverter; a filter that filters a current signal received from the bus to generate a filtered signal; and a control module that operates in an impedance determination mode. The impedance determination mode includes: based on the filtered signal, controlling the driver and the inverter to generate a pulsed signal applied to the power source; determining a current level and a voltage of the power source due to generation of the pulsed signal, and determining impedance based on the current level and the voltage. The control modules are configured to: determine a characterization parameter of the power source based on the impedance; and perform a control operation or a countermeasure based on the characterization parameter.

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