Patents Assigned to GM
  • Publication number: 20250112578
    Abstract: A method for control of an alternating current (AC) electric motor through a voltage inverter having a plurality of electric switches with on-off states that collectively define a plurality of non-zero vectors angularly disposed about a common origin includes through one or more controllers, calculating a rotating voltage reference vector to apply to the AC electric motor through the voltage inverter. The method also includes through one or more controllers, calculating voltage inverter switching times using a first subset of the plurality of non-zero vectors, the first subset including fewer than all of the plurality of non-zero vectors and including no adjacent non-zero vectors, to synthesize the rotating voltage reference vector. Additionally, the method includes through the voltage inverter, applying the rotating voltage reference vector to the AC electric motor.
    Type: Application
    Filed: October 3, 2023
    Publication date: April 3, 2025
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Minh-Khai Nguyen, Yilun Luo
  • Publication number: 20250108674
    Abstract: Systems and methods for a centrally designed vehicle HVAC system that cools vehicle components as well as the cabin and/or delivery containers. The HVAC system is designed with the ability to divert HVAC capacity from one vehicle system to another, allowing for more optimized HVAC usage. In some examples, the HVAC system disclosed herein allows for a more optimized HVAC system size, including decreased HVAC system weight and power consumption. In various implementations, the HVAC system uses back office prediction and remote control to make the determination of HVAC system bias based on current weather conditions as well as forecasted weather conditions. The HVAC system provides a comfortable vehicle cabin while ensuring the thermal condition of vehicle systems and components are managed to avoid interruptions to service.
    Type: Application
    Filed: September 29, 2023
    Publication date: April 3, 2025
    Applicant: GM Cruise Holdings LLC
    Inventor: Jeffrey Brandon
  • Publication number: 20250108436
    Abstract: A method for capturing trapped powder from a part during an additive manufacturing process, the method comprising defining parameters for a part, the part defining an interior passageway defined by interior sidewalls, defining parameters for a powder removal cap, the powder removal cap comprising a body portion and a thin radial membrane connected to the interior sidewalls of the part, simultaneously creating the part and the powder removal cap via additive manufacturing, wherein the powder removal cap is created within the interior passageway and, upon completion of the creation of the part and the powder removal cap, the powder removal cap traps excess powder within the interior passageway, removing the powder removal cap from the interior passageway by breaking the radial membrane from the interior sidewalls to permit access to the interior passageway, and capturing the excess powder within the interior passageway.
    Type: Application
    Filed: September 28, 2023
    Publication date: April 3, 2025
    Applicant: GM Global Technology Operations LLC
    Inventors: Andrew Thomas Cunningham, Ante Tony Lausic, Adam Golembeski, Patrick J. Eding
  • Publication number: 20250108726
    Abstract: In an embodiment, a method is provided for controlling a plurality of converters that are coupled to a plurality of cells of a rechargeable energy storage system (RESS) and configured to supply electric current to other systems that require the electric current, the method including obtaining, via one or more sensors, cell data as to the plurality of cells, the cell data including a state-of-charge for each of the plurality of cells; obtaining other system data as to the other systems, including an amount of electric current required by the other systems; and controlling the plurality of converters, in accordance with instructions provided by a processor, based on both: the cell data, including the state-of-charge for each of the plurality of cells; and the other system data, including the amount of electric current by the other systems.
    Type: Application
    Filed: October 3, 2023
    Publication date: April 3, 2025
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: William R. Cawthorne, Brian A. Welchko, Bradley David Smrdel, Mohamed Kamel, Carrie Bradley, Suresh Gopalakrishnan, Chandra S. Namuduri, David W. Walters
  • Publication number: 20250113122
    Abstract: A telematics system for a vehicle includes a vehicle processor for storing data including vehicle location, vehicle data, and environmental data. The telematics system also includes a server communicatively coupled to the vehicle processor and configured to determine a range remaining for the vehicle. In some examples, the range remaining is based on vehicle data and environmental conditions.
    Type: Application
    Filed: September 29, 2023
    Publication date: April 3, 2025
    Applicant: GM Global Technology Operations LLC
    Inventors: Christopher L. Oesterling, Prerak Modh, Kelly Amanda Jones
  • Publication number: 20250112512
    Abstract: A rotor for mounting on a rotational axis in an axial flux electric motor includes a ferromagnetic rotor core. The rotor also includes a plurality of alternating south and north pole permanent magnets (PMs) arranged on the ferromagnetic rotor core symmetrically around the rotational axis and facing the stator. The ferromagnetic rotor core includes a plurality of core saliencies extending to the rotor exterior surface. Each of the core saliencies is arranged between one south pole PM and one north pole PM. The plurality of core saliencies is phase-angle shifted relative to the plurality of alternating south and north pole PMs to thereby alter magnetic reluctance of the electric motor. An axial flux electric motor employing the above-described rotor is also contemplated.
    Type: Application
    Filed: November 10, 2023
    Publication date: April 3, 2025
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Vincent Fedida, Alan G. Holmes, Chengwu Duan, Jian Yao
  • Publication number: 20250110178
    Abstract: An electric vehicle (EV), and systems and methods are introduced in aspects of the disclosure that use a battery management system (BMS) for one or more Lithium ion (Li+) battery cells. The BMS includes an apparatus coupled with outer terminals of the one or more Li+ battery cells and configured to estimate an open circuit voltage (VOC) across the Li+ battery cells. The apparatus further includes a memory, at least one processor coupled with the memory. The at least one processor is configured, when executing code stored in the memory, to produce a state of charge (SOC) observer, the SOC observer including a hysteresis model to account for hysteresis in the one or more Li+ battery cells.
    Type: Application
    Filed: October 3, 2023
    Publication date: April 3, 2025
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jun-mo Kang, Hanho Yun
  • Publication number: 20250108365
    Abstract: A functionalized polymeric separator membrane, including a polymer backbone chosen from an aramid-based polymer, a polyamide-based polymer, or a polyimide-based polymer, or combinations thereof; and further comprising one or more functional side groups (-FSG) capable of trapping transition metal ions and acidic species. The functionalized polymeric separator membrane may be a sulfonated polyaramid separator membrane. Sulfonation of polyaramid separators add functional groups that trap both acidic species and TM ions, thereby suppressing anode damage caused by TM deposition onto the anode by a two-step process. The functionalized polymer separator membranes may be used with Li-ion, Li-metal, or Sodium-ion batteries.
    Type: Application
    Filed: July 22, 2023
    Publication date: April 3, 2025
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xingcheng Xiao, Nathaniel Z. Hardin, Ion C. Halalay
  • Publication number: 20250112580
    Abstract: A slew rate controllable system for powering an electric machine. The system may include a plurality of power switches operable for converting a direct current (DC) input into an alternating current (AC) output suitable for electrically powering the electric machine. The system may include a gate drive system operable for controlling a slew rate associated with transitioning the switches between opened and closed states.
    Type: Application
    Filed: September 28, 2023
    Publication date: April 3, 2025
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yilun Luo, Khorshed Mohammed Alam, Eric B. Gach, Chandra S. Namuduri, Rashmi Prasad, Mohammad F. Momen
  • Publication number: 20250112577
    Abstract: Presented are separately excited motor (SEM) drive systems, methods for making/using such systems, and vehicles equipped with such systems. A motor drive system includes a rechargeable battery unit and a multilevel power factor correction (PFC) device interposed between and electrically connecting the battery unit and an electric power source. The battery unit and PFC device are electrically connected via a traction inverter module (TIM) device and a multilevel power transfer circuit (PTC) device. The TIM contains multiple pairs of TIM switches, and the PTC device contains multiple PTC switches. An SEM unit contains a rotor assembly, which includes a rotor core bearing a rotor winding, and a stator assembly, which includes a stator core bearing multiple stator windings electromagnetically paired with the rotor winding. Each stator winding is electrically connected to a respective pair of TIM switches, whereas the rotor winding is electrically connected to the PTC switches.
    Type: Application
    Filed: October 2, 2023
    Publication date: April 3, 2025
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Khorshed Mohammed Alam, Yilun Luo, Junghoon Kim, Chandra S. Namuduri, Muhammad A. Zahid, Mazharul Chowdhury, Lei Hao, Seyedrasoul Hosseini
  • Publication number: 20250108716
    Abstract: Methods, vehicle systems, and vehicles are provided that are capable of managing communication between a vehicle and a portable energy source (PES) coupled to the vehicle. The vehicle systems include a vehicle battery configured to provide electrical power to a propulsion system of the vehicle and a vehicle controller that is configured to establish two-way data communication between the vehicle controller and a PES controller of the PES, determine an energy transfer mode for transferring electrical power between the vehicle battery and a PES battery of the PES, initiate electrical power transfer between the vehicle battery and the PES battery in accordance with the energy transfer mode while the vehicle is being propelled by the propulsion system, receive a status of the PES battery from the PES controller, and adjust the electrical power transfer between the vehicle battery and the PES battery based on the status.
    Type: Application
    Filed: October 2, 2023
    Publication date: April 3, 2025
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Michael D. Alarcon, Grant L. Meade, Manvir Dulai, Steve Ashley Warden, Ralph David Schlottke, Asadullah Noorzaie, Christian Teixeira, Bridget A. Beaton
  • Publication number: 20250112582
    Abstract: Methods, systems, and vehicles are provided for determining a stator resistance value of an electric motor. The systems may include the electric motor including a stator and a rotor; a sensor system including configured to generate sensor data indicative of sensed operating conditions of the electric motor including a current magnitude, a current angle, a motor speed, a temperature of the stator, and a temperature of the rotor; and a controller operably coupled with the sensor system and the electric motor. The controller is configured to: determine an initial stator resistance value based on a stator reference temperature and either estimated data sensor data received from the sensor system; determine a stator temperature coefficient based on the sensor data and a stator nonlinear resistance ratio curve; and determine the stator resistance value based on the initial stator resistance value and the stator temperature coefficient.
    Type: Application
    Filed: October 2, 2023
    Publication date: April 3, 2025
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Anno Yoo, Cheng Gong
  • Patent number: 12264711
    Abstract: A torque transfer assembly including a drive shaft with external splines. A first proximal groove and a first distal groove of the drive shaft are spaced apart at a first distance. A driven member includes a hub configured to receive the drive shaft. The hub includes internal splines, a second proximal groove, a second distal groove, and a slit. The second proximal groove and the second distal groove are spaced apart at a second distance equal to the first distance. A first retention member is configured to be inserted into the slit and into cooperation with the first proximal groove when the drive shaft is seated in the hub. The first distal groove of the drive shaft aligns with the second proximal groove of the hub when the drive shaft is within the hub such that the first proximal groove of the drive shaft is aligned with the slit.
    Type: Grant
    Filed: January 25, 2023
    Date of Patent: April 1, 2025
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Avissai Alcantara
  • Patent number: 12263848
    Abstract: A method of extending connectivity of a recipient vehicle may be executed by a non-transitory computer-readable medium. During an ignition off state of the recipient vehicle, the method includes disabling a recipient cellular network access device (NAD) of the recipient vehicle and connecting to a low power communications source. The method includes communicating with a centralized location over the low power communications source. The low power communications source may be a recipient Bluetooth® low energy (BLE) within the recipient vehicle. The method may include connecting to a donor vehicle proximate the recipient vehicle. The donor vehicle includes a donor NAD and a donor BLE, such that the donor NAD of the donor vehicle communicates with the centralized location on behalf of the recipient vehicle.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: April 1, 2025
    Assignee: GM Global Technology Operations LLC
    Inventors: Andrew J. MacDonald, Dipankar Pal, Russell A. Patenaude, Matthew E. Gilbert-Eyres, Eric T. Hosey, Venkata Naga Siva Vikas Vemuri
  • Patent number: 12265604
    Abstract: Securing package delivery via unmanned aerial vehicles (UAVs), drones, robots, etc. is contemplated. The package delivery may include assigning a provenance certificate to a package scheduled for drone delivery, determining a plurality of vehicles to be used in transporting the package to an autonomous receiver, determining credentials assigned to each of the vehicles, pairing the credentials with the package to generate a delivery pairing, the delivery pairing identifying the credentials of the vehicles authorized to transport the package, and transporting the delivery pairing to each of the vehicles to prevent vehicles having certificates omitted from the delivery pairing from transporting the package.
    Type: Grant
    Filed: March 8, 2023
    Date of Patent: April 1, 2025
    Assignee: GM Global Technology Operations LLC
    Inventors: Adam L. Wright, Russell A. Patenaude, Matthew E. Gilbert-Eyres, Eric T. Hosey
  • Patent number: 12266811
    Abstract: A system for a high-performance prismatic lithium-ion battery cell is provided. The system includes a battery cell stack including an electrode sub-assembly including a plurality of pairs of anode electrodes and cathode electrodes and including a planar side. The battery cell stack further includes a polymeric shell disposed around the electrode sub-assembly and configured for providing mechanical protection and electrical insulation to the electrode sub-assembly. The battery cell stack further includes a metal foil sheet attached to the polymeric shell and disposed next to and in contact with the planar side of the electrode sub-assembly, wherein the metal foil sheet is configured for exchanging heat with the electrode sub-assembly.
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: April 1, 2025
    Assignee: GM Global Technology Operations LLC
    Inventor: Seung-Woo Chu
  • Patent number: 12263868
    Abstract: A method includes receiving sensed vehicle-state data, actuation-command data, and surface-coefficient data from a plurality of remote vehicles, inputting the sensed vehicle-state data, the actuation-command data, and the surface-coefficient data into a self-supervised recurrent neural network (RNN) to predict vehicle states of a host vehicle in a plurality of driving scenarios, and commanding the host vehicle to move autonomously according to a trajectory determined using the vehicle states predicted using the self-supervised RNN.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: April 1, 2025
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Shuqing Zeng, Yubiao Zhang, Bakhtiar B. Litkouhi
  • Patent number: 12263605
    Abstract: A collaborative dual robot hinge mounting system includes: a first robot including an end effector that moves a pair of bolts in position to be run through a pair of hinges and into a BIW, where the end effector includes a first bolt runner and a second bolt runner; and first and second cameras that detect locations or orientations of hinge mounting holes on the BIW for the pair of hinges. A control module sends to a second robot the locations or orientations of the hinge mounting holes to signal the second robot to position the pair of hinges relative to the BIW and, in response to detecting the pair of hinges being placed relative to the BIW, drives the pair of bolts via the first bolt runner and the second bolt runner through the pair of hinges and into the hinge mounting holes in the BIW.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: April 1, 2025
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dooil Hwang, Frederick G. Landry, Jr.
  • Patent number: D1068577
    Type: Grant
    Filed: August 25, 2023
    Date of Patent: April 1, 2025
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Daniel C. Gifford, Chad T. Pancurak
  • Patent number: D1068582
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: April 1, 2025
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Hongjun Xu