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公开(公告)号：US20220135219A1
公开(公告)日：2022-05-05
申请号：US17084967
申请日：2020-10-30
Applicant: GM Global Technology Operations LLC
Inventor： Venkata Prasad Atluri , Venkatesh Gopalakrishnan , Neeraj S. Shidore , Chandra S. Namuduri
Abstract: A system to distribute power in the operation of a drone vehicle includes a primary energy storage unit, a plurality of power boost modules that communicate electrically with the primary energy storage unit, and a plurality of propeller-motor modules, each of the plurality of propeller-motor modules being connected electrically to a respective power boost module of the plurality of power boost modules. One or more of the plurality of power boost modules provide on-demand additional energy to a respective propeller-motor module during the operation of the drone vehicle.
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公开(公告)号：US20220097540A1
公开(公告)日：2022-03-31
申请号：US17037974
申请日：2020-09-30
Applicant: GM Global Technology Operations LLC
Inventor： Venkata Prasad Atluri , Hanho Yun , Chandra S. Namuduri , Madhusudan Raghavan , Venkatesh Gopalakrishnan
Abstract: An apparatus for charging an electric vehicle includes a plug command center having data identifying an availability of an amount of energy which is available for transfer from a first battery system of a first battery electric vehicle (BEV) to a second BEV. A charging adapter provides for energy transfer between a first plug of the first BEV and a second plug of the second BEV. A V2V charging controller communicates data identifying a battery system charge state of the first BEV and a battery system charge state of the second BEV and selects between multiple available charging options.
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公开(公告)号：US09926830B2
公开(公告)日：2018-03-27
申请号：US14997619
申请日：2016-01-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alok Warey , Michael A. Potter , Venkatesh Gopalakrishnan
CPC classification number: F01P3/16 , F01P3/02 , F02B25/00 , F02B2075/025 , F02B2710/03 , F02F1/4214 , F02F1/425 , F02F2001/249
Abstract: A two-stroke engine includes a crankcase defining a cylinder bore, a piston moveably disposed within the cylinder bore, and a cylinder head that covers the cylinder bore. A wall surface of the cylinder bore, a piston combustion surface of the piston, and a head combustion surface of the cylinder head, cooperate to define a combustion chamber for combusting a fuel therein. A thermal conductivity reducing mechanism is disposed in thermal connectivity with at least one of the crankcase, the piston, and the cylinder head for reducing heat transfer from combusted fuel within the combustion chamber to at least one of the crankcase, the piston, and the cylinder head. The thermal conductivity reducing mechanism may include a layer of low conductivity material coating one of the surfaces defining the combustion chamber, or a void in the cylinder head and/or the crankcase adjacent the combustion chamber.
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公开(公告)号：US20240083291A1
公开(公告)日：2024-03-14
申请号：US17943404
申请日：2022-09-13
Applicant: GM Global Technology Operations LLC
Inventor： Yongjie Zhu , Chunhao J. Lee , Suresh Gopalakrishnan , Venkatesh Gopalakrishnan
Abstract: A system in a vehicle includes a plurality of contactors to open or close a connection from two or more battery packs that power one or more motors of the vehicle to move the vehicle. The system also includes a controller to control the plurality of contactors to connect the two or more battery packs in series according to one of a plurality of modes of operation or to connect the two or more battery packs in parallel according to another of the plurality of modes of operation, and to control the plurality of contactors to test an operation of one or more of the plurality of contactors.
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公开(公告)号：US20220102769A1
公开(公告)日：2022-03-31
申请号：US17038603
申请日：2020-09-30
Applicant: GM Global Technology Operations LLC
Inventor： Neeraj S. Shidore , Lei Hao , Chandra S. Namuduri , Suresh Gopalakrishnan , Meixian Wang , Venkatesh Gopalakrishnan
Abstract: A method for preconditioning a battery pack at cold ambient temperatures is disclosed. The battery pack includes one or more battery cells. The method includes the steps of determining a desired rate of temperature rise for a battery cell, determining a desired cell current based on the desired rate of temperature rise, and determining a desired pack current based on the desired cell current and the battery pack configuration. The method further includes using a controller to control a current generation device to provide the desired pack current to the battery pack, wherein the current generation device generates an alternating current.
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Patent Agency Ranking
公开(公告)号：US11383696B2
公开(公告)日：2022-07-12
申请号：US16439223
申请日：2019-06-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Neeraj S. Shidore , Norman K. Bucknor , Dongxu Li , Mark Tadrous , Derek F. Lahr , Suresh Gopalakrishnan , Venkatesh Gopalakrishnan
IPC: B60W20/40 , B60W20/10 , B60W20/20 , B60W10/02 , B60W30/18 , B60W10/06 , B60W10/08 , B60W30/20 , B60W10/10
Abstract: A powertrain system configured to transfer torque to a driveline is described, and includes an internal combustion engine, a torque converter, a transmission, an electric machine, and a controller. The engine is configured to operate in one of an all-cylinder mode and a dynamic deactivation mode to generate an engine torque. The electric machine is configured to generate a motor torque. The motor torque and the engine torque combine to generate an output torque that is transferable to the driveline and is responsive to an output torque request. The controller is in communication with the engine, the torque converter, the transmission, and the electric machine. The controller includes an instruction set that is executable to operate the engine in the dynamic deactivation mode to generate engine torque, and operate the electric machine to generate motor torque to supplement the engine torque to generate the output torque.
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7.发明申请公开(公告)号：US20190103537A1
公开(公告)日：2019-04-04
申请号：US15723488
申请日：2017-10-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： James R. Salvador , Anil Bika , Alok Warey , Venkatesh Gopalakrishnan
IPC: H01L35/30
Abstract: An engine includes a cylinder liner. The cylinder liner includes an interior wall, an exterior wall, and a thermoelectric element disposed therebetween. The interior wall forms a cylinder bore forming part of a combustion chamber. The exterior wall is positioned adjacent a coolant jacket. The thermoelectric element is operable to generate an electric current in response to a temperature gradient between the interior wall, which is exposed to the high temperatures of the combustion chamber, and the exterior wall, which is exposed to the cooler temperatures of a coolant in the coolant jacket. An electric current in a circuit of the thermoelectric element may be controlled to affect a cylinder wall temperature. The circuit of the thermoelectric element may be opened, and the voltage of the thermoelectric element may be measured and used to calculate the cylinder wall temperature.
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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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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：US20220158574A1
公开(公告)日：2022-05-19
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: H02P6/28 , H02P6/16 , B60L58/27 , B60L53/20 , H01M10/615 , H01M10/625 , H01M10/6571 , H01M10/66
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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