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    ELECTRIC POWERTRAIN SYSTEM WITH MULTI-MODULE BATTERY PACK AND INTERMODULE THERMAL BARRIER
    4.
    发明申请
    ELECTRIC POWERTRAIN SYSTEM WITH MULTI-MODULE BATTERY PACK AND INTERMODULE THERMAL BARRIER 有权

    公开(公告)号：US20220328900A1

    公开(公告)日：2022-10-13

    申请号：US17228877

    申请日：2021-04-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Cara A. Koepele ,  Su Jung Han ,  Raviraj U. Nayak

    IPC: H01M10/658 ,  H01M50/204 ,  B60K1/04 ,  H01M10/625 ,  H01M10/613

    Abstract: A multi-module battery pack includes a battery tray defining multiple battery tray compartments, battery modules each disposed within a corresponding one of the compartments, and a thermal barrier arranged in a predefined heat transfer path through the tray between an adjacent pair of the battery modules. The thermal barrier has a thickness of at least about 1 mm and a thermal conductivity of less than about 4 W/m-K, such that the thermal barrier blocks the heat transfer path to mitigate a thermal runaway event of one of the adjacent pair of battery modules. An electric powertrain system includes a rotary electric machine having phase leads and an output member, a driven load coupled to the output member, and the multi-module battery pack. A method includes providing the tray, identifying the heat transfer path, and arranging the thermal barrier in the heat transfer path.

    Composite article for mitigating noise, vibration, and harshness
    5.
    发明授权
    Composite article for mitigating noise, vibration, and harshness 有权

    公开(公告)号：US11120783B2

    公开(公告)日：2021-09-14

    申请号：US16124926

    申请日：2018-09-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Seongchan Pack ,  Su Jung Han ,  Martin S. Kramer

    IPC: G10K11/168 ,  B32B5/02 ,  B32B15/14 ,  B32B3/30 ,  B32B3/12

    Abstract: A composite article configured for mitigating noise, vibration, and harshness includes a substrate having a first stiffness. The composite article includes a structural film formed from a composition and disposed on the substrate in a pattern that is arranged to dampen a sound wave having a first frequency and a first amplitude and propagatable in a first direction to a second frequency that is less than the first frequency and a second amplitude that is less than the first amplitude. The composite article includes a coating layer disposed on the pattern and configured to dampen the sound wave in the first direction and in a second direction that is perpendicular to the first direction. The composite article has a second stiffness that is greater than the first stiffness. A method of forming the composite article is also described.

    Integrated power electronics component for mitigating noise, vibration, and harshness
    6.
    发明授权
    Integrated power electronics component for mitigating noise, vibration, and harshness 有权

    公开(公告)号：US10985629B2

    公开(公告)日：2021-04-20

    申请号：US16124906

    申请日：2018-09-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Seongchan Pack ,  Su Jung Han ,  Martin S. Kramer ,  Song He

    IPC: H02K5/24 ,  H02K5/06 ,  H02K5/02

    Abstract: An integrated power electronics component configured for mitigating noise, vibration, and harshness includes a case formed from metal and configured to dampen a sound wave having a first frequency and a first amplitude and propagatable in a first direction. The case has a first surface and a second surface spaced apart from the first surface, a first stiffness, and a first strength, and the first and second surfaces include a structure defining a plurality of recessions therein. The component includes a cured polymer formed from a composition disposed on at least one of the first and second surfaces in each of the recessions to thereby dampen the sound wave in the first direction and in a second direction that is perpendicular to the first direction to a second frequency that is less than the first frequency and a second amplitude that is less than the first amplitude.

    Hybrid composite materials systems for battery housings having improved thermal performance
    8.
    发明授权
    Hybrid composite materials systems for battery housings having improved thermal performance 有权

    公开(公告)号：US12266813B2

    公开(公告)日：2025-04-01

    申请号：US17472210

    申请日：2021-09-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Venkateshwar R. Aitharaju ,  Xiaosong Huang ,  Bhavesh Shah ,  Gustavo Cibrian Salazar ,  Su Jung Han

    IPC: H01M50/231 ,  H01M50/209 ,  H01M50/224 ,  H01M50/227 ,  H01M50/233

    Abstract: A hybrid material housing for a battery reduces or minimizes thermal runaway propagation. The housing includes a composite structure for the battery and optionally includes a polymeric matrix selected from the group consisting of: epoxy, phenolic resin, polyester, vinyl ester, and combinations thereof and a reinforcing material selected from the group consisting of: glass fibers, carbon fibers, basalt fibers, aromatic polyamide KEVLAR® fibers, and combinations thereof. A metal layer is disposed along an exterior surface of the composite structure that comprises aluminum, steel, stainless steel, alloys, and combinations thereof. In a first mode, the metal layer contacts the composite structure and in a second mode after exposure to a thermal load of greater than or equal to about 500° C., the metal layer at least partially delaminates from the exterior surface and forms insulating air gaps to define a thermal barrier. Methods of forming the hybrid material housings are also provided.

    BATTERY INCLUDING THERMALLY CONDUCTIVE FILLER MATERIAL WITH THERMAL RUNAWAY CONTAINMENT FUNCTION
    9.
    发明申请
    BATTERY INCLUDING THERMALLY CONDUCTIVE FILLER MATERIAL WITH THERMAL RUNAWAY CONTAINMENT FUNCTION 有权

    公开(公告)号：US20230060247A1

    公开(公告)日：2023-03-02

    申请号：US17411203

    申请日：2021-08-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Su Jung Han ,  David R. Clark ,  Ryan P. Hickey

    IPC: H01M10/653 ,  H01M50/176 ,  H01M50/209 ,  H01M10/658 ,  H01M50/289

    Abstract: A battery includes a battery cell stack disposed within a housing such that a gap exists between the battery cell stack and an inner surface of the housing. The battery cell stack includes a plurality of battery cells that each include a positive electrode tab and a negative electrode tab electrically coupled to an electrode assembly and extending from the electrode assembly outside of a case. The positive electrode tabs and/or the negative electrode tabs of the plurality of battery cells extend into the gap between the battery cell stack and the inner surface of the housing. A filler material fills the gap and provides a thermally conductive pathway between the positive electrode tabs and/or the negative electrode tabs of the plurality of battery cells and the inner surface of the housing. The filler material includes a thermally conductive particulate component distributed throughout a polymeric matrix component.

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