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公开(公告)号：US20250070585A1
公开(公告)日：2025-02-27
申请号：US18602319
申请日：2024-03-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jian Yao , Shuonan Xu , Yongjie Zhu , Su-Yang Shieh , Chunhao J. Lee , Chengwu Duan
IPC: H02J7/00 , B60L50/60 , B60L53/62 , H01M10/0525 , H01M10/054 , H01M10/46 , H01M50/204 , H01M50/296 , H01M50/512
Abstract: An electrical system includes a high-voltage battery pack assembly having a first cell set with a first group of energy storage cells and a second cell set having a second group of energy storage cells connectable to the first cell set. The first cell set includes at least one first battery chemistry cell and the second cell set includes at least one second battery chemistry cell. At least one switch is in electrical communication with the first or second cell set. Battery connection terminals are in electrical communication with at least one of the first or second cell sets. A controller is configured to determine an operating strategy of the high-voltage battery pack assembly and place at least one of the first cell set or the second cell set in electrical communication with the battery connection terminals in response to the operating strategy of the high-voltage battery pack.
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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.
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公开(公告)号：US12074466B2
公开(公告)日：2024-08-27
申请号：US18151054
申请日：2023-01-06
Applicant: GM Global Technology Operations LLC
Inventor： Chunhao J. Lee , Suresh Gopalakrishnan , Dongxu Li , Muhammad Hussain Alvi , Yongjie Zhu
CPC classification number: H02J7/0024 , B60L58/12 , B60L58/19 , H02J7/0047 , H02J7/0063 , H02J7/00712 , H02J7/345
Abstract: A system for controlling propulsion in a vehicle includes a switching system connected to a battery system connected to a drive unit and to one or more electrical loads by a propulsion bus. A controller is configured to control the switching system to vary a voltage applied to the drive unit. The controller is configured to receive a request to transition between operating modes, the transition including a change of a voltage applied to the drive unit from an initial voltage level to a target voltage level. The controller is configured to sequentially perform deactivating the one or more electrical loads, based on the target voltage being higher than the initial voltage, pre-charging the one or more electrical loads, based on the target voltage being lower than the initial voltage, performing a discharge procedure, and operating the switching system to apply the voltage at the target voltage level.
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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
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.
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公开(公告)号：US20240025271A1
公开(公告)日：2024-01-25
申请号：US17870145
申请日：2022-07-21
Applicant: GM Global Technology Operations LLC
Inventor： Muhammad Hussain Alvi , Chunhao J. Lee , Suresh Gopalakrishnan , Junfeng Zhao , Chen-fang Chang
CPC classification number: B60L15/2045 , B60W10/08 , B60L2240/421 , B60L2240/423
Abstract: An electric vehicle, an electric drive system and method of operating the electric vehicle. The electric drive system provides a torque to a wheel of the electric vehicle. The processor is configured to obtain a value of the torque at which the electric drive system of the vehicle is operating, determine an optimal speed for the vehicle for the torque based on an efficiency model of the electric drive system, wherein the optimal speed corresponds to an optimal drive efficiency for the electric drive system, and operate the vehicle at the optimal speed.
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Patent Agency Ranking
公开(公告)号：US20230167889A1
公开(公告)日：2023-06-01
申请号：US17562148
申请日：2021-12-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dongxu Li , Chengwu Duan , Norman K. Bucknor , Chunhao J. Lee , Lei Hao
CPC classification number: F16H45/02 , F16H61/143 , F16H41/22 , F16H2045/0284 , F16H2041/246
Abstract: A system for bypassing a torque converter in a powertrain is provided. The system includes a torque generating device including an output shaft and a transmission assembly. The transmission assembly includes a transmission output shaft and a torque converter, a torque converter bypass shaft. The transmission assembly further includes a disconnect clutch selectively coupling the torque converter with the torque generating device and a torque converter clutch selectively coupling the torque converter bypass shaft with the torque generating device. Engaging the disconnect clutch and disengaging the torque converter clutch enables the torque generating device to transmit torque to the transmission output shaft through the torque converter. Engaging the torque converter clutch and disengaging the disconnect clutch enables the torque generating device to transmit torque to the transmission output shaft through the torque converter bypass shaft.
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公开(公告)号：US20230167888A1
公开(公告)日：2023-06-01
申请号：US17562145
申请日：2021-12-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dongxu Li , Chengwu Duan , Norman K. Bucknor , Chunhao J. Lee , Lei Hao
CPC classification number: F16H45/02 , B60K1/00 , B60K17/08 , B60K17/10 , B60K17/28 , F16D21/00 , F16H2045/005
Abstract: A system for a power take-off mechanism for a powertrain system is provided. The system includes an electrically powered torque generating device including a torque generating device output shaft and a transmission output shaft receiving mechanical power from the torque generating device output shaft. The system further includes a clutch selectively disengaging the transmission output shaft from the torque generating device output shaft and a power take-off module receiving mechanical power from the torque generating device.
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公开(公告)号：US11603925B1
公开(公告)日：2023-03-14
申请号：US17560560
申请日：2021-12-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chunhao J. Lee , Norman K. Bucknor , Dongxu Li , Chengwu Duan , Lei Hao
Abstract: Presented are clutch control systems for torque converter (TC) assemblies, methods for making/operating such TC assemblies, and vehicles equipped with such TC assemblies. A TC assembly includes a housing that drivingly connects to an electric motor, and an output member that drivingly connects to a multi-gear transmission. Rotatable within the TC housing are a turbine attached to the TC output member and an impeller juxtaposed with the turbine. A lockup clutch is operable to lock the housing to the output member. A system controller is programmed to receive a shift signal to shift the powertrain from a neutral or park operating mode to a forward driving operating mode; responsive to receipt of this shift signal, the lockup clutch is opened. The system controller then receives a TCC lock signal to lock the lockup clutch; responsive to receipt of the TCC lock signal, the lockup clutch is closed.
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公开(公告)号：US11365711B2
公开(公告)日：2022-06-21
申请号：US17085388
申请日：2020-10-30
Applicant: GM Global Technology Operations LLC
Inventor： Venkatesh Gopalakrishnan , Chandra S. Namuduri , Suresh Gopalakrishnan , Dongxu Li , Chunhao J. Lee , Neeraj S. Shidore , Norman K. Bucknor
Abstract: An energy storage system (ESS) for a vehicle propulsion system includes a first battery electrically coupled to a first voltage bus, a second battery electrically coupled to a second voltage bus, and a bidirectional DC/DC power converter electrically coupled to the voltage buses. A starter for cranking an engine is electrically coupled to the first voltage bus. A controller executes computer code stored in memory. The computer code is configured to operate the converter in a boost mode to transfer power from the second voltage bus to the first voltage bus, in response to the controller determining that: a power capability of the first battery is below a power demand on the first voltage bus; a state of charge of the first battery is below a state of charge threshold; or a temperature of the first battery is below a temperature threshold.
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公开(公告)号：US20220136475A1
公开(公告)日：2022-05-05
申请号：US17085388
申请日：2020-10-30
Applicant: GM Global Technology Operations LLC
Inventor： Venkatesh Gopalakrishnan , Chandra S. Namuduri , Suresh Gopalakrishnan , Dongxu Li , Chunhao J. Lee , Neeraj S. Shidore , Norman K. Bucknor
Abstract: An energy storage system (ESS) for a vehicle propulsion system includes a first battery electrically coupled to a first voltage bus, a second battery electrically coupled to a second voltage bus, and a bidirectional DC/DC power converter electrically coupled to the voltage buses. A starter for cranking an engine is electrically coupled to the first voltage bus. A controller executes computer code stored in memory. The computer code is configured to operate the converter in a boost mode to transfer power from the second voltage bus to the first voltage bus, in response to the controller determining that: a power capability of the first battery is below a power demand on the first voltage bus; a state of charge of the first battery is below a state of charge threshold; or a temperature of the first battery is below a temperature threshold.
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