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    SHAPE MEMORY ALLOY ACTIVE HATCH VENT
    1.
    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。

    Multi-voltage vehicle operation
    3.
    发明授权
    Multi-voltage vehicle operation 有权

    公开(公告)号：US12233748B2

    公开(公告)日：2025-02-25

    申请号：US18336705

    申请日：2023-06-16

    Applicant: GM Global Technology Operations LLC

    Inventor： Chunhao J. Lee ,  Suresh Gopalakrishnan ,  Yongjie Zhu ,  Dongxu Li ,  Muhammad Hussain Alvi

    IPC: B60L58/19 ,  B60K1/02 ,  B60L1/00 ,  B60L58/22 ,  H02J7/00

    Abstract: A vehicle includes two or more battery packs configured to power a motor. A controller is configured to dynamically activate an operational mode during operation. The operational mode is one of multiple possible operational modes including a first operational mode defining a series connection between the two or more battery packs and second operational mode defining a parallel connection between the two or more battery packs. The connection between the battery packs is controlled by a first plurality of switches. A plurality of low voltage loads are connected to a subset of the battery packs in the battery packs such that a power output of the subset of the battery packs provides full power to the plurality of low voltage loads. The plurality of low voltage loads are connected to only the subset of the battery packs in both the first operational mode and the second operational mode.

    POWER TRANSFER FOR ELECTRIC MOTORS WITH SEGMENTED WINDINGS
    4.
    发明申请
    POWER TRANSFER FOR ELECTRIC MOTORS WITH SEGMENTED WINDINGS 有权

    公开(公告)号：US20250030362A1

    公开(公告)日：2025-01-23

    申请号：US18355717

    申请日：2023-07-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Peng Peng ,  Lei Hao ,  Suresh Gopalakrishnan

    IPC: H02P21/14 ,  H02P27/08

    Abstract: Some embodiments disclosed herein are directed to power transfer in electric motors having segmented windings. In some embodiments, a control system may determine a d-axis command voltage for a secondary winding of an electric motor and a q-axis command voltage for the secondary winding based on a primary winding voltage, primary winding current, secondary winding current, and rotor electrical position. The control system may generate gate control signals based on the determined d-axis command voltage and q-axis command voltage for the secondary winding, and transmit the gate control signals to an inverter coupled to the secondary winding to control an electrical power transfer between the primary winding and the secondary winding. Other embodiments may be disclosed or claimed.

    VOLTAGE SWITCHING OF AN ELECTRIC MOTOR
    5.
    发明申请
    VOLTAGE SWITCHING OF AN ELECTRIC MOTOR 有权

    公开(公告)号：US20250001876A1

    公开(公告)日：2025-01-02

    申请号：US18343139

    申请日：2023-06-28

    Applicant: GM Global Technology Operations LLC

    Inventor： Orgun A. Guralp ,  Suresh Gopalakrishnan ,  Chandra S. Namuduri

    IPC: B60L15/20 ,  B60L50/51 ,  B60L50/64

    Abstract: A system for controlling a propulsion system of a vehicle includes a switching system including a first switching device connecting a battery system to a first set of windings of an electric motor, and a second switching device connecting the battery system to a second set of windings. The system also includes a controller configured to transition the propulsion system from an initial propulsion mode in which an initial voltage is applied to the electric motor, to a target mode in which a target voltage is applied. The transitioning includes controlling the first switching device to provide current to the first set of windings at the initial voltage to produce torque, and subsequently controlling the second switching device to cause the battery system to apply the target voltage to the second set of windings while the current is provided to the first set of windings at the initial voltage.

    Current observer for current regulator of vehicle electric traction motor
    10.
    发明授权
    Current observer for current regulator of vehicle electric traction motor 有权

    公开(公告)号：US11987136B2

    公开(公告)日：2024-05-21

    申请号：US17490069

    申请日：2021-09-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Vinod Chowdary Peddi ,  Muhammad Hussain Alvi ,  Lei Hao ,  Suresh Gopalakrishnan

    IPC: B60L15/20 ,  B60W10/08

    CPC classification number: B60L15/2054 ,  B60W10/08 ,  B60L2210/40 ,  B60L2240/423 ,  B60L2240/429

    Abstract: A system in a vehicle includes a current regulator to obtain current commands from a controller based on a torque input and provide voltage commands and an inverter to use the voltage commands from the current regulator and direct current (DC) supplied by a battery to provide alternating current (AC). An electric traction motor provides drive power to a transmission of the vehicle based on injection of the AC from the inverter. A current observer obtains measured input current signals based on the AC for a current control cycle and provides predicted current signals for a next control cycle to the current regulator using a model. The current observer includes a controller to check output of the model against the measured input current signals. The current observer tunes parameters of the controller and the model used to generate the predicted current signals based on the measured input current signals.

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