Patents Assigned to GM Global Technology Operations LLC
  • Publication number: 20210135461
    Abstract: A distributed battery power system having a battery pack and a battery controller. The battery pack has: a plurality of cells configured to generate a plurality of cell voltages; a voltage current temperature module electrically connected to the plurality of cells; and a plurality of isolation switch sets electrically connected between the plurality of cells. The battery controller is in communication with the voltage current temperature module, and operable to: send a status request to the voltage current temperature module; receive the plurality of cell voltages from the voltage current temperature module in response to the status request; determine if the plurality of cells includes one or more problem cells in response to the plurality of cell voltages; and perform an action in response to determining that the one or more problem cells are present to prevent damage to the one or more problem cells.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yue-Yun Wang, Garrett M. Seeman, Jeffrey S. Piasecki
  • Publication number: 20210135533
    Abstract: A rotary electric machine for use with coolant includes a stator and rotor assembly. The rotor assembly includes a rotor, rotor shaft, and first and second end rings. The rotor has inner and outer diameter surfaces and an embedded set of rotor magnets proximate the outer diameter surface. The shaft is connected to the rotor and defines a main coolant passage along an axis of rotation. Radial shaft coolant passages are in fluid communication with the main coolant passage. The end rings are positioned at opposing distal ends of the rotor. The shaft coolant passages direct the coolant into the rotor and/or the end rings such that the coolant flows axially through rotor cavities of the rotor and cools the rotor magnets via forced convection.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Farzad Samie, Alireza Fatemi, Derek F. Lahr, Erik B. Golm, Xiaofeng Yang
  • Publication number: 20210129842
    Abstract: Presented are embedded control systems with logic for computation and data sharing, methods for making/using such systems, and vehicles with distributed sensors and embedded processing hardware for provisioning automated driving functionality. A method for operating embedded controllers connected with distributed sensors includes receiving a first data stream from a first sensor via a first embedded controller, and storing the first data stream with a first timestamp and data lifespan via a shared data buffer in a memory device. A second data stream is received from a second sensor via a second embedded controller. A timing impact of the second data stream is calculated based on the corresponding timestamp and data lifespan. Upon determining that the timing impact does not violate a timing constraint, the first data stream is purged from memory and the second data stream is stored with a second timestamp and data lifespan in the memory device.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Shige Wang, Wei Tong, Stephen N. McKinnie, Shuqing Zeng
  • Publication number: 20210135588
    Abstract: An AC electronic solid-state switch includes an electrically insulating and thermally conductive layer, a first electrically conductive trace, a second electrically conductive trace, and a plurality of semiconductor dies each electrically connected to the first electrically conductive trace and the second electrically conductive trace. Each of the plurality of semiconductor dies forms a MOSFET, IGBT or other types of electronically controllable switch. The AC electronic solid-state switch further includes a common drain conductor that is electrically connected to each drain terminal of the plurality of semiconductor dies. The AC electronic solid-state switch is configured to block between 650 volts and 1700 volts in the off-state in a first direction and a second direction, the second direction being opposite the first direction, and the AC electronic solid-state switch is configured to carry at least 500 A continuously in the on-state with a voltage drop of less than 2V.
    Type: Application
    Filed: November 5, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Rashmi Prasad, Chandra S. Namuduri
  • Publication number: 20210135230
    Abstract: Methods of making a solid-state electrochemical cell that cycles lithium ions are provided that include applying a liquid metal composition comprising gallium to a first major surface of either a solid-state electrolyte or a solid electrode (e.g., lithium metal) in the presence of an oxidant and in an environment substantially free of water to reduce surface tension of the liquid metal composition so that it forms a continuous layer over the first major surface. The first major surface having the continuous layer of liquid metal composition is contacted with a second major surface to form a continuous interfacial layer between the solid-state electrolyte and the solid electrode. Solid-state electrochemical cells formed by such methods are also provided, where the metal composition comprising gallium is a liquid in a temperature range of greater than or equal to about 20° C. to less than or equal to about 30° C.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jiagang XU, Xingcheng XIAO, Robert D. SCHMIDT
  • Publication number: 20210129687
    Abstract: A system for utilizing a deployable flex range battery to augment a primary battery is provided. The system includes a flex electronics bay. The flex electronics bay is electrically connected to an electrical sub-system including the primary battery and includes a DC-DC converter operable to change a voltage of electric power and at least one battery connection terminal. The system further includes the deployable flex range battery removably connected to the at least one battery connection terminal and a flex electronics bay controller programmed to selectively supply electric power from the flex electronics bay to the electrical sub-system.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Hanho Yun, Neeraj S. Shidore, Chandra S. Namuduri, Venkatesh Gopalakrishnan
  • Publication number: 20210129392
    Abstract: A method of creating an interface includes: a) adding organometallic compounds to a polymeric material to create an interfacial layer; b) placing the polymeric material having the interfacial layer in a mold; c) heating a deposit material until the deposit material has a predetermined-minimized volumetric density; and d) depositing the deposit material on the interfacial layer. The latent heat of the molten metallic material transfers to the interfacial layer to create chemical bonds and physical interlocks between the interfacial layer and the metallic material. The deposit material cools to form solidified layer on the interfacial layer.
    Type: Application
    Filed: November 5, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Seongchan Pack, Su Jung Han, Qinglin Zhang
  • Publication number: 20210132404
    Abstract: An optical device (e.g., display device) includes a coherent light source generating a coherent light beam in a visible, ultraviolet, or infrared range. The coherent light beam is directed at a liquid crystal component. A plurality of liquid crystals and a plurality of microparticles having an average diameter of ?about 450 nm to ?about 20 micrometers (?m) are disposed in an interior compartment. An electrical source is in electrical communication with the first and the second electrodes. When no voltage or current is applied, a filtered light beam transmitted or reflected from the liquid crystal component exhibits a first speckle contrast ?about 0.6. When voltage or current is applied, the microparticles are induced to move and the filtered light beam has a second speckle contrast that is ?about 0.6. A method of reducing speckle in an optical device having a coherent light source is also provided.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, KENT STATE UNIVERSITY
    Inventors: John HARDEN, Liang-Chy CHIEN, Kai-Han CHANG
  • Publication number: 20210129686
    Abstract: An electric propulsion system includes a battery pack and a DC-DC converter. The converter has a bypass switch and semiconductor switches. A traction power inverter module (“TPIM”) rectifies a DC bus voltage on the voltage bus to produce an AC bus voltage. An electric machine is connected to the TPIM and energized via the AC bus voltage. A controller calculates required output power from the converter based on a requested operating mode, and speed and torque of the electric machine. When the output power exceeds a threshold, the bypass switch closes to bypass the converter. When the output power is less than the threshold, the controller uses a minimum loss voltage from a loss map as a target control voltage of the converter to optimize efficiency of the electric propulsion system.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Lei Hao, Chandra S. Namuduri, Suresh Gopalakrishnan, Chengwu Duan, Norman K. Bucknor
  • Publication number: 20210130963
    Abstract: An assembly for a vehicle having reduced galvanic corrosion includes a first component defining at least one interface region that includes a carbon-fiber reinforced polymeric composite (CFRP) and a first material present in the at least one interface region and having a first electrochemical potential. A second component has a second material and is in contact with the at least one interface region of the first component. The second material has a second electrochemical potential different than the first electrochemical potential. In this manner, in the presence of an electrolyte the first material may be either less noble than the second material and serve as a sacrificial material or alternatively more noble to the second material reducing a driving force for corrosion. Methods of reducing galvanic corrosion in an assembly (e.g., for a vehicle) are also provided.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Selina X. ZHAO, Hongliang WANG, William R. RODGERS
  • Publication number: 20210129679
    Abstract: The present invention relates to a brake control device and a brake control method for a vehicle comprising a plurality of brakes which are respectively installed on wheels, the brake control device comprising an auto leveling sensor which senses a load state of the vehicle according to a change in an angle; a control unit which calculates a correction value according to the load state of the vehicle sensed by the auto leveling sensor; and an electronic brake booster which corrects a predetermined braking power set according to a brake pedal force with the calculated correction value so that the braking operation of each brake is made.
    Type: Application
    Filed: September 25, 2020
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Bongbum Back
  • Publication number: 20210135256
    Abstract: A process for anode overpressure remedial action in a fuel cell system is provided. The process includes monitoring a pressure of hydrogen gas at an anode of a fuel cell stack of the fuel cell system, diagnosing a mechanically stuck open injector based upon the monitored pressure, and based upon diagnosing the mechanically stuck open injector, closing a valve within a hydrogen storage system to prevent flow of the hydrogen gas from a hydrogen storage tank into a gas line connecting the hydrogen storage tank to the mechanically stuck open injector and maintaining operation of the fuel cell stack to deplete the hydrogen gas at the anode.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Bruce J. Clingerman, Jie Kou
  • Publication number: 20210129662
    Abstract: A storage tank for a gas is provided. The storage tank includes a liner defining an internal compartment; a boss coupled to the liner; an interlayer covering a portion of the boss and the liner, the interlayer being non-pyrolyzed and including an interconnected web and pores having a diameter greater than the diameter of a hydrogen molecule and less than or equal to about 2 nm; and an outer shell including a carbon fiber reinforced composite, the outer shell covering the interlayer, except for an interlayer end that is in contact with the boss, so that the interlayer end defines an interlayer ring that is exposed to an external environment. The storage tank is configured so that when gas diffuses through the liner to the interlayer, the interlayer channels the gas out of the exposed interlayer ring. Methods of fabricating the storage tank are also provided.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Matthew BECKNER, James R. SALVADOR, Anne M. DAILLY
  • Publication number: 20210135224
    Abstract: A hybrid electrochemical device including at least two electrically connected solid-state electrochemical cells is provided. Each electrochemical cell includes a first outer electrode having a first current collector and a first electroactive layer, a second outer electrode having a second current collector and a second electroactive layer, and one or more intervening electrodes disposed between the electroactive layers. At least one of the intervening electrodes includes one or more capacitor additives. The first outer electrode is electrically connected to at least one of the intervening electrodes in a first electrical configuration. The second outer electrode is electrically connected to at least one of the intervening electrodes in a second electrical configuration. The at least two electrochemical cells are electrically connected in a third electrical configuration.
    Type: Application
    Filed: October 30, 2020
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mengyan HOU, Haijing LIU, Qili SU, Xiaochao QUE
  • Publication number: 20210135194
    Abstract: The present disclosure provides a method of forming an electrode material for use in an electrochemical cell that cycles lithium ions. The method includes contacting a catalyst precursor with one or more electroactive materials to form a mixture. The catalyst precursor includes one or more metal salts. The method may also include activating the catalyst precursor in the mixture to form an activated mixture including an activated catalyst; and/or contacting one or more carbonaceous materials with the activated mixture to form the electrode material. The electrode material includes one or more electroactive particles that may be carbon coated disposed within a carbonaceous structure.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Lei WANG, Gongshin QI, Wei LI
  • Publication number: 20210135193
    Abstract: Methods of making negative electrode materials for an electrochemical cell that cycles lithium ions are provided. A surface of the electrode material formed of silicon, silicon-containing alloys, tin-containing alloys, or combinations thereof is treated with an oxidant at a first temperature of greater than or equal to about 100° C. to form a continuous intermediate layer comprising oxides. The method also includes pyrolyzing a carbon-containing precursor over the continuous intermediate layer at a second temperature of greater than or equal to about 600° C. to form a continuous carbon coating thereon. The intermediate layer oxides may be transformed to carbides. The continuous carbon coating comprises both graphitic carbon and amorphous carbon and may be a multilayered coating, where the inner layer predominantly includes amorphous carbon and the outer layer predominantly includes graphitic carbon.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Lei WANG, Xingcheng XIAO, Wei LI, Mark W. VERBRUGGE, Michael P. BALOGH
  • Publication number: 20210131159
    Abstract: A window regulator may include a first guide rail assembly, that may be coupled to the door panel and including a first guide rail, a first pulley and a second pulley. The first slider may be configured to receive the window pane and translate along the first guide rail to move the window pane between an open position and a closed position. The first cable may be coupled to a drive and engaged with the first pulley and may be fixed to the first slider such that actuation of the drive moves the first slider and the window pane into the opening. The spring may be disposed between an end of the first cable and a portion of the first slider. The spring may be configured to bias the slider and an edge of the window pane towards the A-side beam or the B-side beam.
    Type: Application
    Filed: November 4, 2019
    Publication date: May 6, 2021
    Applicants: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Bamberg, GM Global Technology Operations LLC
    Inventors: James TREVARROW, Jeffrey MURTFELDT, Michael KIDD, Terrence COSTIGAN
  • Publication number: 20210129706
    Abstract: Management system for a rechargeable energy storage device in an electric vehicle and corresponding method is disclosed. The rechargeable energy storage device has one or more battery packs each having a plurality of modules with one or more respective cells. A respective module management unit is embedded in each of the plurality of modules through respective microcircuits and configured to determine one or more local parameters. A supervisory controller is configured for two-way communication with the respective module management unit. The supervisory controller is configured to receive the local parameters, determine one or more global pack parameters based in part on the local parameters and transmit the global pack parameters back to the respective management unit. The supervisory controller is configured to control operation of the rechargeable energy storage device based in part on the global pack parameters and the local parameters.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yue-Yun Wang, Lei Hao, Brian J. Koch, Jeffrey S. Piasecki, Garrett M. Seeman
  • Patent number: 10996480
    Abstract: Calibrating a virtual image projected from a vehicle HUD system onto a windshield includes displaying a fiducial at a predetermined location upon the windshield, projecting a test image from a test image generator within the HUD system, aligning the test image with the fiducial, determining a positional deviation from a test image calibrated position required to align the test image with the fiducial, and based upon the positional deviation and a known positional relationship between a virtual image calibrated position and the test image calibrated position, aligning the virtual image with the fiducial.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: May 4, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Kai-Han Chang, Thomas A. Seder
  • Patent number: 10995707
    Abstract: An internal combustion gasoline engine includes an air heater coupled to an intake duct of the engine in a heat transfer relationship with air in the intake duct. A combustion pre-chamber is also formed in the head of the engine. The pre-chamber is at least partially separated from the combustion chamber by a wall. One or more apertures are formed through the wall and provide fluid communication paths from the combustion chamber to the pre-chamber, feeding a mixture of air and fuel from the combustion chamber to the pre-chamber. The apertures further define a plurality of combustion paths allowing ignited fuel and air from the pre-chamber to efficiently enter and combust the fuel and air mixture within the combustion chamber. The air heater and the combustion pre-chamber increase combustion efficiency from a first efficiency level to a second efficiency level greater than the first efficiency level.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: May 4, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Edward J Keating