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    PRESSURE CONTROL OF BATTERY CELLS
    1.
    发明申请
    PRESSURE CONTROL OF BATTERY CELLS 有权

    公开(公告)号：US20250030039A1

    公开(公告)日：2025-01-23

    申请号：US18355761

    申请日：2023-07-20

    Applicant: GM Global Technology Operations LLC

    Inventor： Jun-mo Kang ,  Insu Chang ,  Yongjie Zhu ,  Chunhao J. Lee ,  Chen-fang Chang

    IPC: H01M10/04 ,  B60L50/64 ,  B60L58/10 ,  H01M10/48 ,  H01M50/202 ,  H01M50/211 ,  H01M50/242 ,  H01M50/249

    Abstract: A pressure management system includes a pressure plate configured to be disposed at an initial position relative to a battery cell in a housing, the initial position including a first orientation, a tilting assembly configured to allow the pressure plate to change from a first orientation to a second orientation based on the expansion force being non-uniform. The system includes a mechanical linkage attached to the pressure plate and configured to move laterally in response to the expansion force and translate the expansion force to a reactive force, and a biasing system including a biasing member configured to resist a lateral movement of the mechanical linkage. The biasing system is configured to apply a biasing force that causes the mechanical linkage to apply the reactive force, and based on the expansion force being non-uniform, is controllable to change the biasing force to balance an internal pressure of the cell.

    Systems, apparatuses, and methods for active end-turn cooling for an electric motor with four-bar linkages
    3.
    发明授权
    Systems, apparatuses, and methods for active end-turn cooling for an electric motor with four-bar linkages 有权

    公开(公告)号：US12074505B2

    公开(公告)日：2024-08-27

    申请号：US17305642

    申请日：2021-07-12

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： SeungHwan Keum ,  Jun-mo Kang ,  Insu Chang ,  Young J. Kim

    IPC: H02K9/19 ,  H02K7/10

    CPC classification number: H02K9/19 ,  H02K7/10 ,  H02K2209/00

    Abstract: In various embodiments, systems, apparatuses and methods are provided to distribute coolant to an electric motor. The apparatus includes a pan configured with a set of holes for coolant flow; an assembly including a set of bar linkages, a set of discs, and a single actuator motor wherein the assembly is attached to the pan wherein the single actuator motor is linked via bar linkages to discs that enable configuring a planar angle of the pan to obtain an optimum hole location of holes for coolant flow; and in response to external disturbances to the apparatus that redirect the coolant flow from the target region of the electric motor, the single actuator motor is controlled by an algorithm to change the planar angle of the pan to obtain the optimum hole location to direct coolant flow to the target region of the electric motor.

    System and method for estimating state of charge of a lithium battery cell of a vehicle
    4.
    发明授权
    System and method for estimating state of charge of a lithium battery cell of a vehicle 有权

    公开(公告)号：US11660979B2

    公开(公告)日：2023-05-30

    申请号：US17142459

    申请日：2021-01-06

    Applicant: GM Global Technology Operations LLC

    Inventor： Jun-mo Kang ,  Insu Chang

    IPC: H01M4/02 ,  B60L58/21 ,  G01R31/367 ,  G01R31/387

    CPC classification number: B60L58/21 ,  G01R31/367 ,  G01R31/387 ,  B60L2250/16

    Abstract: A method and system for estimating state of charge of a lithium battery cell of a vehicle is provided. The method comprises providing a non-linear function of the lithium battery cell, a normalized lithium surface density and an actual voltage at a current of the lithium battery cell having an internal resistance. The method further comprises determining an actual lithium surface density based on the actual voltage relative to an inverse of the non-linear function. The method further comprises determining a varying parameter based on the actual lithium surface density relative to a first diffusion model. The method further comprises determining a predicted lithium surface density based on the varying parameter relative to a second diffusion model. The method further comprises determining an estimated state of charge of the lithium battery cell when a difference between the predicted and actual lithium surface densities is less than a first threshold.

    PRESSURE CONTROL OF BATTERY CELLS
    6.
    发明申请
    PRESSURE CONTROL OF BATTERY CELLS 有权

    公开(公告)号：US20250030061A1

    公开(公告)日：2025-01-23

    申请号：US18354782

    申请日：2023-07-19

    Applicant: GM Global Technology Operations LLC

    Inventor： Jun-mo Kang ,  Hanho Yun ,  Chen-fang Chang ,  Insu Chang ,  Yongjie Zhu ,  Chunhao J. Lee

    IPC: H01M10/42

    Abstract: A pressure management system includes a pressure plate disposed at an initial position relative to a battery cell, the battery cell disposed in a housing, where expansion of the battery cell causes an expansion force to be applied to the pressure plate. The pressure management system also includes a mechanical linkage attached to the pressure plate, the mechanical linkage configured to move in a lateral direction in response to the expansion force and translate the expansion force to a reactive force that is opposed to the expansion force, and a biasing system including a biasing member configured to resist lateral movement of the mechanical linkage. The biasing system is configured to apply a biasing force in a direction opposite the lateral direction, the biasing force causing the mechanical linkage to apply the reactive force as a selected proportion of the expansion force.

    Interior permanent magnet motor having controllable coolant distribution
    7.
    发明授权
    Interior permanent magnet motor having controllable coolant distribution 有权

    公开(公告)号：US11722037B2

    公开(公告)日：2023-08-08

    申请号：US17315730

    申请日：2021-05-10

    Applicant: GM Global Technology Operations LLC

    Inventor： SeungHwan Keum ,  Insu Chang ,  Jun-mo Kang ,  Young J. Kim

    IPC: H02K9/19 ,  H02K3/28 ,  H02K5/20

    CPC classification number: H02K9/19 ,  H02K3/28 ,  H02K5/203

    Abstract: An interior permanent magnet motor having controllable coolant distribution is provided. The motor comprises a motor housing and a rotary shaft connected to a rotor rotatably disposed in the housing. The motor further comprises a stator unit disposed in the housing and comprising conductive windings arranged about the rotor. The windings have a straight portion radially extending to an end-turn portion. The motor further comprises an oil sump disposed on the housing above the stator unit. The oil sump comprises a reservoir having an inner side and an outer side. The reservoir has at least one aperture formed therethrough over the end-turn portion. The motor further comprises a movable nozzle having a first open end extending to a second open end. The first open end is connected to the at least one aperture such that the movable nozzle and reservoir are in fluid communication. The second open end extends from the at least one aperture and positioned adjacently above the end turn portion for coolant distribution. The motor further comprises a connector movably disposed in the housing proximate to the movable nozzle. The motor further comprises a cam connected to the connector and in contact with the nozzle. Upon movement of the connector, the cam is arranged with the connector to move the second open end of the nozzle over the end turn portion for distribution of coolant oil from the oil sump to the end turn portion.

    METHODS, SYSTEMS, AND APPARATUSES FOR PASSIVE END-TURN COOLING FOR AN ELECTRIC MOTOR USING GRAVITY
    8.
    发明申请
    METHODS, SYSTEMS, AND APPARATUSES FOR PASSIVE END-TURN COOLING FOR AN ELECTRIC MOTOR USING GRAVITY 有权

    公开(公告)号：US20230010156A1

    公开(公告)日：2023-01-12

    申请号：US17305639

    申请日：2021-07-12

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： SeungHwan Keum ,  Jun-mo Kang ,  Insu Chang ,  Young J. Kim

    IPC: H02K9/19 ,  B60L50/50 ,  B05B3/00

    Abstract: In various embodiments, methods, systems, and vehicle apparatuses are provided. A system provides a gravity drive to distribute coolant oil flow including a nozzle for directing a flow of coolant oil over a surface of an electric motor wherein the flow of the coolant oil is caused by a gravity drive; a connector that is coupled to the nozzle that enables the nozzle to sway in response to external forces encountered by a vehicle operation and to distribute coolant oil over the exterior surface of the electric motor; and a counterweight that is coupled to the nozzle that provides a countermeasure to the external forces encountered by the vehicle operation to cause the nozzle to sway in a manner that enables the coolant oil distributed evenly across the exterior surface of the electric motor.

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