Patents Assigned to GM
  • Patent number: 11745611
    Abstract: A system for control of an electric powertrain is provided. The powertrain includes a battery configured for providing electrical energy at a first relatively higher voltage in direct current. The powertrain further includes a power inverter including a first phase circuit, a second phase circuit including first and second switches, and a third phase circuit including third and fourth switches. The powertrain further includes a motor configured for receiving alternating current electrical energy from the power inverter. The system further includes a computerized controller operating a charging cycle. The charging cycle includes deactivating the first phase circuit of the power inverter and selectively cyclically activating the first switch, the second switch, the third switch, and the fourth switch to direct electrical energy provided at a second relatively lower voltage in direct current through the motor to provide a flow of electrical energy at the first voltage to the battery.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: September 5, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Minh-Khai Nguyen, Rashmi Prasad, Chandra S. Namuduri
  • Patent number: 11745741
    Abstract: A method detects unintended acceleration of a motor vehicle during a closed-loop speed control mode by determining external forces on the vehicle via a controller, and then calculating a desired acceleration using a measured vehicle speed and the external forces. The method includes determining an actual acceleration of the vehicle, including filtering a speed signal as a first actual acceleration value and/or measuring a second actual acceleration value using an inertial measurement unit (IMU). During the speed control mode, the method includes calculating an acceleration delta value as a difference between the desired acceleration and the actual acceleration, and then using the acceleration delta value to detect the unintended acceleration during the speed control mode. A powertrain system for the motor vehicle, e.g., an electric vehicle, includes the controller and one or more torque generating devices coupled to road wheels of the vehicle.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: September 5, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Jacob M. Knueven, Jason C. Jousma, Paul G. Otanez, Aubrey W. Downs, Jr., Joseph D. Hillegass, Abdoulaye T. Diallo
  • Patent number: 11745591
    Abstract: A propulsion torque distribution system for a vehicle includes a controller in electronic communication with a plurality of vehicle systems. The controller executes instructions to receive at least one or more computational faults, one or more sensor faults, and a driver torque request. In response to receiving at least one of the one or more computational faults and the one or more sensor faults, the controller determines a fault that affects calculation of a primary torque request has occurred. In response to determining the fault that affects calculation of the primary torque request has occurred, the controller determines a severity of the fault. The controller determines a remedial state based on the severity of the fault. The remedial state indicates a corresponding action that is executed by the propulsion torque distribution system.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: September 5, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Daniel Marius Bangala, Yiran Hu, Sirui Song, Matthew James Meakin Brymer
  • Patent number: 11745596
    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: Grant
    Filed: September 25, 2020
    Date of Patent: September 5, 2023
    Assignee: GM Global Technology Operations LLC
    Inventor: Bongbum Back
  • Patent number: 11749832
    Abstract: Lithiated electrodes, electrochemical cells including lithiated electrodes, and methods of making the same are provided. The method includes lithiating at least one electrode in an electrochemical cell by applying current across a first current collector of the at least one electrode to a second current collector of an auxiliary electrode. The electrochemical cell may be disposed within a battery packaging and the auxiliary electrode may be disposed within the battery packaging adjacent to an edge of the electrochemical cell. The at least one electrode may include a first electroactive layer disposed on or near one or more surfaces of the first current collector, and the auxiliary electrode may include a second electroactive layer disposed at or near one or more surfaces of the second current collector. The method may further include extracting the auxiliary electrode from the battery packaging and sealing the battery packaging, which includes the pre-lithiated electrochemical cell.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: September 5, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xingcheng Xiao, Xingyi Yang, Mark W. Verbrugge, Raghunathan K, Qinglin Zhang
  • Patent number: 11746581
    Abstract: A flip hinge for a motor vehicle includes an inner strap affixed to a body of the motor vehicle, an outer strap separate from the inner strap and affixed to a removable panel of the motor vehicle, and an intermediate link extending from the inner strap to the outer strap. The intermediate link is rotatably attached to the inner strap at a first link end by a spring-loaded pivot. The intermediate link is rotatably attached to the outer strap at a second link end by an outer strap pivot. The intermediate link is movable between at least a first position and a second position. The spring-loaded pivot biases the intermediate link towards the second position whenever the intermediate link is not in the first position, and the outer strap is separable from the intermediate link only when the intermediate link is in the first position.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: September 5, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Christine M Krolewski, Joern Zirfass, Bob Thomas
  • Patent number: 11745578
    Abstract: A hybrid powertrain for an automobile includes a transmission adapted to provide power to wheels of the automobile, an engine adapted to provide power to an input shaft of the transmission, and an electric motor-generator unit adapted to provide power to the input shaft of the transmission, wherein the electric motor-generator is positioned within the transmission, coaxial with the transmission input shaft, the electric motor-generator being supported by and enclosed within a pump support of the transmission.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: September 5, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Farzad Samie, Madhusudan Raghavan, Jian Yao, Alireza Fatemi
  • Patent number: 11744362
    Abstract: A storage enclosure includes a first support member spaced from a second support member. The first support member includes a first rotating shelf support and the second support member includes a second rotating shelf support. A third support member is spaced from a fourth support member. The third support member includes a first fixed shelf support and a second fixed shelf support and the fourth support member includes a third fixed shelf support and a fourth fixed shelf support. A shelf includes a first end connected to the first rotating shelf support and the second rotating shelf support and a second end. The shelf is positionable in a first configuration and a second configuration.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: September 5, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: George Floarea, Radu Dragos Sotir, Chris Wisniewski
  • Patent number: 11747164
    Abstract: A method for updating a localization of an autonomous vehicle includes receiving perception input data from a sensor of the autonomous vehicle and receiving map data including road lane information in a vicinity of the autonomous vehicle. The method includes processing the perception input data to extract perceived road lane information including a perceived x position, a perceived y position, a perceived z position, a perceived lane type, a perceived lane color, and a perceived lane curvature and processing the map data to extract map road lane information including a map x position, a map y position, a map z position, a map lane type, a map lane color, and a map lane curvature. The method includes calculating a transformation matrix from the perceived road lane information and the map road lane information and updating the map data and a localization of the vehicle based on the transformation matrix.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: September 5, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Meena Nagappan, Hyukseong Kwon, Joshua Lampkins, Rajan Bhattacharyya
  • Patent number: 11747147
    Abstract: The present technology pertains to visualization of maps used for autonomous vehicle applications. These maps include many layers of dense information. Each layer can be stored in a vector format and small portions, called tiles, of a map can be requested by a users web browser. The web browser can filter for desired layers and render all desired map layers at once to provide visualization of map and layers of interest.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: September 5, 2023
    Assignee: GM Cruise Holdings LLC
    Inventors: Chen Xie, Rohan Agrawal, Zachary Garcia
  • Publication number: 20230275288
    Abstract: A battery electric device includes a battery cell, e.g., a pouch, prismatic, or cylindrical cell, connectable to an electric load, and a direct-to-air thermoelectric assembly (TEA) or another heat pump connected to a surface of the cell. A pressure control device maintains constant pressure on the cell surface when the cell is connected to the load. Connection to the load causes the TEA/heat pump to pump heat from the cell. A sensor, e.g., thermocouple(s) and/or heat flux sensor(s), generate an output voltage signal indicative of the quantity of heat. A battery system includes the device and a processor in communication with the cell, the load, and the power supply. The processor generates an electronic control signal in response to the quantity of heat.
    Type: Application
    Filed: January 24, 2022
    Publication date: August 31, 2023
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Song-Yul Choe, Yang Hu, Taylor R. Garrick
  • Publication number: 20230276365
    Abstract: A system for ambient temperature and battery voltage compensation for operation of a telematics module through an ignition-off low-power mode is provided. The system includes the telematics module configured for providing data communication and for operating in the ignition-off low-power mode through a telematics remaining reduced power operating period. The system further includes a battery system providing electrical power to the telematics module, a battery voltage sensor measuring a battery voltage of the battery system, and an ambient temperature sensor measuring an ambient temperature. The system further includes a computerized ignition-off low-power controller, including programming to periodically monitor the battery voltage, periodically monitor the ambient temperature, and determine a relative energy consumption ratio based upon comparing the measured values to nominal values.
    Type: Application
    Filed: February 25, 2022
    Publication date: August 31, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Scott T. Droste, Alex J. Veloso, Reza Amini
  • Patent number: 11738748
    Abstract: The present application generally relates to a method and apparatus for generating an action policy for controlling an autonomous vehicle. In particular, the method and apparatus are operative for detecting, by a vehicle sensor, a distance from a host vehicle to a lane edge, determining a status of a vehicle system, calculating, by a processor, a risk index in response to the status of the vehicle system, calculating, by the processor, an intervention threshold in response to the risk index, generating, by the processor, a vehicle path in response to the distance of the host vehicle to the lane edge being less than the intervention threshold, and controlling the vehicle, by a vehicle controller, in response to the vehicle path.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: August 29, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Tara Craigen, Mohammadali Shahriari, Jayant Sachdev
  • Patent number: 11738778
    Abstract: A system for facilitating transfers of control includes an input module configured to acquire a set of user preferences relating control states to contexts, the control states including at least a manual control state, and an autonomous and/or semi-autonomous control state. The system includes a processing device configured to automatically perform, during operation of a semiautonomous system, generating a transfer of control (TOC) policy based on the set of user preferences and a current context state, the TOC policy prescribing transitions between control states in response to actions. The processing device is also configured to perform, based on an action performed by the user or a control system, determining whether to perform a transition from a current control state to a second control state, and in response to the TOC policy prescribing the transition, transitioning from the current control state to the second control state.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: August 29, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zahy Bnaya, Asaf Degani, Claudia Goldman-Shenhar
  • Patent number: 11738479
    Abstract: A mold for molding a composite preform that has an outer edge thereabout and a plurality of tethers each attached at respective opposed ends thereof to the outer edge. The mold includes first and second mold halves defining a mold body and being configured to transition between an open position and a generally closed position, and a plurality of moveable members each having a moveable gage pin configured for being wrapped thereabout by a respective one of the tethers and a respective actuator configured for moving the moveable gage pin between a respective first position in which the respective moveable gage pin is disposed at a respective first distance from a center of the mold body and a respective second position in which the respective moveable gage pin is disposed at a respective second distance from the center of the mold body that is less than the first distance.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: August 29, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Venkateshwar R. Aitharaju, Selina X. Zhao, Ritesh Dixit, Terrence Wathen, Alexander Millerman
  • Patent number: 11738806
    Abstract: Systems and methods for smoothing automated lane change (ALC) operations. A mission planner, upon receipt of an ALC request, sends a ALC heads up signal to a lateral control. The mission planner then begins confidence building operations, for a preprogrammed duration of time, and awaits an ALC ready signal from the lateral control. The lateral control, upon receipt of the ALC heads up, calculates an index of readiness, RALC, as a function of the requested ALC, a current trajectory, and a lane centering control path. When RALC is less than or equal to a readiness threshold, Rt, the lateral control sends the ALC ready signal. When RALC is greater than Rt, the lateral control generates a steering correction and applies the steering correction to reduce the RALC and thereby stabilize the vehicle and send the ALC ready signal. Upon receiving the ALC ready signal, the ALC operation is executed.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: August 29, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Reza Zarringhalam, Mohammadali Shahriari, Amir Takhmar, Paul A. Adam, Namal P. Kumara
  • Patent number: 11741719
    Abstract: An autonomous vehicle, system and method of navigating the autonomous vehicle. The system includes one or more sensors for obtaining data with respect to a remote stationary vehicle, and a processor. The processor is configured to classify the remote stationary vehicle into an object hypothesis based on the data, determine an actionable behavior of the autonomous vehicle based on a probability for the object hypothesis, and navigate the autonomous vehicle with respect to the remote vehicle via the actionable behavior.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: August 29, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Brent N. Bacchus, Pinaki Gupta, Sayyed Rouhollah Jafari Tafti
  • Patent number: 11744050
    Abstract: Systems, methods, and computer-readable media are disclosed. An example coolant system can be configured in an autonomous vehicle. The system can include a first coolant loop configured with a first series of coolant hoses to communicate a first volume of coolant fluid between a first reservoir, a first coolant pump, a three-way heat exchanger, and a computer system heat exchanger and a second coolant loop configured with a second series of coolant hoses to communicate a second volume of coolant fluid between a second reservoir, a second coolant pump, the three way heat exchanger, and the computer system heat exchanger. The system can further include a third coolant loop configured with a third series of coolant hoses to communicate third volume of coolant fluid between the three-way heat exchanger and an engine heat exchanger of the vehicle.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: August 29, 2023
    Assignee: GM Cruise Holdings LLC
    Inventors: Roger Lo, Brian Schlotterbeck
  • Patent number: D997052
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: August 29, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Gapdong Choi, Hojun Choi
  • Patent number: D997066
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: August 29, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Hojun Choi, Jongho Hwang, Dongwan Jo