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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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公开(公告)号：US11811212B2
公开(公告)日：2023-11-07
申请号：US17686754
申请日：2022-03-04
Applicant: GM Global Technology Operations LLC
Inventor： Suresh Gopalakrishnan , Chandra S. Namuduri , Lyall Kenneth Winger , James Morrison
Abstract: A system in a vehicle includes a first fuse connected between a power source and a load. The first fuse is an electronic fuse (eFuse) to disconnect the load from the power source via the first fuse based on detecting a failure in the first fuse. The system also includes a second fuse connected between the power source and the load, the first fuse and the second fuse being part of a cluster of fuses. The second fuse is an eFuse and the first fuse signals the second fuse to disconnect the load from the power source via the second fuse based on the first fuse detecting the failure in the first fuse without the second fuse detecting a failure in the second fuse.
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公开(公告)号：US20230313771A1
公开(公告)日：2023-10-05
申请号：US17708125
申请日：2022-03-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chandra S. NAMUDURI , Thomas W. Nehl , Avoki M. Omekanda , Suresh Gopalakrishnan
CPC classification number: F02M61/06 , F02M51/0664 , F02M57/005 , F02M61/166 , F02M61/188 , F02M61/168 , F02M2200/24 , F02M2200/8084 , F02M2200/9053
Abstract: A valve system of a vehicle includes: a housing that is electrically conductive and made of a metal and that includes: an inlet configured to receive a fluid; an outlet configured to output the fluid; and a fluid channel fluidly connecting the inlet and the outlet; a pintle disposed within the housing and that is electrically conductive and made of a metal; a ball that is mechanically fastened to the pintle, that is configured to close the outlet, and that is electrically conductive and made of a metal; an armature that is mechanically fastened to the pintle, that is disposed within the housing, and that is electrically conductive and made of a metal; a solenoid coil that is disposed within the housing and that surrounds the pintle; and an electrically insulative material configured to insulate the pintle from the housing.
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公开(公告)号：US11762406B2
公开(公告)日：2023-09-19
申请号：US17470757
申请日：2021-09-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lyall Kenneth Winger , James Morrison , Suresh Gopalakrishnan , Chandra S. Namuduri
Abstract: A system for regulating voltage includes an electronic fuse including a switching component and an active control circuit connected to the switching component, the control circuit configured to open the switching component based on at least an overcurrent condition. The system also includes a voltage regulation component connected to the switching component, the voltage regulation component configured to regulate a voltage across the switching component by applying a voltage to the switching component based on a measured voltage drop across the switching component, and a desired load voltage.
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公开(公告)号：US20230283061A1
公开(公告)日：2023-09-07
申请号：US17686754
申请日：2022-03-04
Applicant: GM Global Technology Operations LLC
Inventor： Suresh Gopalakrishnan , Chandra S. Namuduri , Lyall Kenneth Winger , James Morrison
Abstract: A system in a vehicle includes a first fuse connected between a power source and a load. The first fuse is an electronic fuse (eFuse) to disconnect the load from the power source via the first fuse based on detecting a failure in the first fuse. The system also includes a second fuse connected between the power source and the load, the first fuse and the second fuse being part of a cluster of fuses. The second fuse is an eFuse and the first fuse signals the second fuse to disconnect the load from the power source via the second fuse based on the first fuse detecting the failure in the first fuse without the second fuse detecting a failure in the second fuse.
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Patent Agency Ranking
公开(公告)号：US11689093B2
公开(公告)日：2023-06-27
申请号：US17193515
申请日：2021-03-05
Applicant: GM Global Technology Operations LLC
Inventor： Muhammad H. Alvi , Alireza Fatemi , Suresh Gopalakrishnan
IPC: H02M1/00 , H02M7/53846 , H01L27/07 , H02M7/5387 , H02M1/38 , H02M7/5388 , B60L50/60 , H02P27/08
CPC classification number: H02M1/0087 , H01L27/0727 , H02M1/38 , H02M7/5387 , H02M7/538466 , B60L50/60 , H02M7/5388 , H02P27/08 , B60L15/08 , B60L15/00
Abstract: A current source inverter includes a first phase leg including a plurality of switching devices, a second phase leg including a plurality of switching devices, and a third phase leg including a plurality of switching devices. The current source inverter also includes a zero-state phase leg including at least one switching device, wherein the zero-state phase leg is configured to transition from an open state to prevent current flow to a closed state to allow current flow between a positive and negative terminal during a dead-band time.
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公开(公告)号：US20230198439A1
公开(公告)日：2023-06-22
申请号：US17555707
申请日：2021-12-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Muhammad Hussain Alvi , Le Chang , Suresh Gopalakrishnan
Abstract: A motor control system includes: a voltage command module configured to determine a target d-axis voltage for an electric motor and a target q-axis voltage for the electric motor; a target frequency module configured to: selectively set a target switching frequency to a first predetermined switching frequency; and selectively set the target switching frequency to a second predetermined switching frequency that is at least 2 kilohertz (kHz) greater than the first predetermined switching frequency; and a switching module configured to: based on the target d-axis voltage and the target q-axis voltage, determine target pulse width modulation (PWM) duty cycles for phases, respectively, of the electric motor; and switch switches of legs of an inverter module connected to the phases of the electric motor at the target PWM duty cycles, respectively, and the target switching frequency.
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公开(公告)号：US20230093333A1
公开(公告)日：2023-03-23
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 , B60L58/26 , H01M50/249 , B60L50/64
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.
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公开(公告)号：US20230070183A1
公开(公告)日：2023-03-09
申请号：US17470757
申请日：2021-09-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lyall Kenneth Winger , James Morrison , Suresh Gopalakrishnan , Chandra S. Namuduri
Abstract: A system for regulating voltage includes an electronic fuse including a switching component and an active control circuit connected to the switching component, the control circuit configured to open the switching component based on at least an overcurrent condition. The system also includes a voltage regulation component connected to the switching component, the voltage regulation component configured to regulate a voltage across the switching component by applying a voltage to the switching component based on a measured voltage drop across the switching component, and a desired load voltage.
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公开(公告)号：US11482954B2
公开(公告)日：2022-10-25
申请号：US17099915
申请日：2020-11-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lei Hao , Neeraj S. Shidore , Suresh Gopalakrishnan , Chandra S. Namuduri , Venkatesh Gopalakrishnan
IPC: H02P1/00 , H02P6/28 , H02P6/16 , B60L58/27 , B60L53/20 , H01M10/625 , H01M10/6571 , H01M10/66 , H01M10/615
Abstract: An apparatus for heating a DC battery in a vehicle including an electric motor. The apparatus comprises an AC generating module coupled to the battery and the electric motor that generates three AC phases. The first, second, and third AC phases are applied to first, second, and third windings of the electric motor, respectively. The first, second, and third AC phases create zero torque in the electric motor because the first AC phase amplitude is equal to the sum of the second and third AC phase amplitudes and the second and third AC phases are 180 degrees out of phase with the first AC phase. The AC generating module creates a heating alternating current in the DC battery.
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