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.

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.

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.

公开(公告)号：US20240429713A1

公开(公告)日：2024-12-26

申请号：US18339606

申请日：2023-06-22

Applicant: GM Global Technology Operations LLC

Inventor： Chandra S. Namuduri ,  Rashmi Prasad ,  Suresh Gopalakrishnan ,  Yilun Luo ,  Khorshed Mohammed Alam ,  Minh-Khai Nguyen

IPC: H02J3/32 ,  B60L50/60 ,  B60L53/24 ,  B60L55/00 ,  H02J7/02 ,  H02M7/797

Abstract: An electric vehicle includes a drive system that performs a method of transferring power between a vehicle and an external location. The drive system includes a battery, a rectifier, and a processor. The rectifier is one of a two-level rectifier and a multi-level rectifier. The processor is configured to connect the rectifier between an alternating current (AC) port of an outlet of an external location and the battery. The rectifier is configured to convert between an AC power at the AC port on an external side of the rectifier and a direct current (DC) power at a vehicle side of the rectifier in order to transfer power bi-directionally between the external location and the battery.

公开(公告)号：US20240235216A1

公开(公告)日：2024-07-11

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

IPC: H02J7/00 ,  B60L58/12 ,  B60L58/19 ,  H02J7/34

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.

公开(公告)号：US12034134B2

公开(公告)日：2024-07-09

申请号：US17477670

申请日：2021-09-17

Applicant: GM Global Technology Operations LLC

Inventor： Lyall Kenneth Winger ,  Dave Gerard Rich ,  James Morrison ,  Suresh Gopalakrishnan ,  Chandra S. Namuduri

IPC: H01M10/613 ,  B60L50/64 ,  B60L58/26 ,  H01M50/249

CPC classification number: H01M10/613 ,  B60L50/64 ,  B60L58/26 ,  H01M50/249

Abstract: A battery system for a vehicle includes a battery tray having a base wall, a plurality of side walls, and a cover that collectively define a receiving zone. A vent includes an inlet and an outlet exposed to the battery receiving zone. A battery is supported by the base wall. A battery electronic controller (BEC) is arranged in the receiving zone and directly connected to the battery.

公开(公告)号：US20240217460A1

公开(公告)日：2024-07-04

申请号：US18149802

申请日：2023-01-04

Applicant: GM Global Technology Operations LLC

Inventor： Xinyu Du ,  Lyall Kenneth Winger ,  Infane Lowe ,  Suresh Gopalakrishnan

IPC: B60R16/023 ,  B60R16/02 ,  B60R16/03

CPC classification number: B60R16/0232 ,  B60R16/0207 ,  B60R16/03 ,  G06N3/0464

Abstract: Examples described herein provide a method for predicting electrical failures within a vehicle. The method includes selectively enabling and disabling an electrical load for the vehicle. The method further includes collecting operational data about the electrical load during the selectively enabling and disabling of the electrical load. The method further includes training the model based at least in part on the operational data to predict a failure associated with the electrical load or a wiring harness associated with the electrical load.

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.

公开(公告)号：US20240162727A1

公开(公告)日：2024-05-16

申请号：US17988000

申请日：2022-11-16

Applicant: GM Global Technology Operations LLC

Inventor： Chandra S. Namuduri ,  Suresh Gopalakrishnan ,  Lei Hao ,  Venkata Prasad Atluri ,  Rashmi Prasad

IPC: H02J7/00 ,  B60L50/60 ,  B60L53/14 ,  B60L53/60 ,  H01M10/42 ,  H01M10/44 ,  H01M50/583

CPC classification number: H02J7/00304 ,  B60L50/60 ,  B60L53/14 ,  B60L53/60 ,  H01M10/425 ,  H01M10/441 ,  H01M50/583 ,  H02J7/0013 ,  H02J7/0063 ,  H02J7/0068 ,  H01M2200/103 ,  H01M2220/20

Abstract: An electric vehicle includes an electrical system and performs a method of charging the electric vehicle. The electrical system includes a first battery subpack, a second battery subpack, wherein the first battery subpack, the second battery subpack, and an electrical load of the electric vehicle are connected in parallel, and a processor. The processor is configured to control a first connection between the first battery subpack and a first charge port and a second connection between the second battery subpack and a second charge port to charge each of the first battery subpack and the second battery subpack while providing power to the electrical load.

公开(公告)号：US20240149746A1

公开(公告)日：2024-05-09

申请号：US17982775

申请日：2022-11-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Orgun A. Guralp ,  Suresh Gopalakrishnan ,  Chandra S. Namuduri ,  Chunhao J. Lee ,  Muhammad Hussain Alvi

IPC: B60L58/19 ,  B60L50/60 ,  B60L58/21

CPC classification number: B60L58/19 ,  B60L50/66 ,  B60L58/21

Abstract: A system for controlling propulsion in a vehicle includes a switching system connected to a battery system and a propulsion system. The battery system includes a first battery assembly and a second battery assembly, the propulsion system includes a first drive unit and a second drive unit, and the switching system includes a first switching device configured to selectively connect the first drive unit to the battery system and a second switching device configured to selectively connect the second drive unit to the battery system. The first switching device and the second switching device are independently operable. The system also includes a controller configured to operate the switching system to vary a voltage applied to at least one of the first drive unit and the second drive unit during vehicle propulsion.