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GM GLOBAL TECHNOLOGY OPERATIONS LLC patent applications on April 3rd, 2025

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Patent Applications by GM GLOBAL TECHNOLOGY OPERATIONS LLC on April 3rd, 2025

GM GLOBAL TECHNOLOGY OPERATIONS LLC: 17 patent applications

GM GLOBAL TECHNOLOGY OPERATIONS LLC has applied for patents in the areas of H02P27/08 (2), H01M10/0525 (2), H02J7/00 (2), B60L53/20 (2), B60L15/00 (2) B01J39/05 (1), H01M10/6568 (1), H02P29/64 (1), H02P27/085 (1), H02P27/08 (1)

With keywords such as: vehicle, battery, core, electric, rotor, stator, including, within, motor, and magnetic in patent application abstracts.



Patent Applications by GM GLOBAL TECHNOLOGY OPERATIONS LLC

20250108365. FUNCTIONALIZED POLYMER SEPARATOR MEMBRANE FOR MITIGATING TRANSITION METAL DISSOLUTION AND TRAPPING ACIDIC SPECIES_simplified_abstract_(gm global technology operations llc)

Inventor(s): Xingcheng Xiao of Troy MI US for gm global technology operations llc, Nathaniel Z. Hardin of Farmington Hills MI US for gm global technology operations llc, Ion C. Halalay of Grosse Pointe Park MI US for gm global technology operations llc

IPC Code(s): B01J39/05, B01J39/19, B01J47/12, C08G69/32, C08G69/48, C08J5/22, H01M50/403, H01M50/423

CPC Code(s): B01J39/05



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.


20250108436. SYSTEMS AND METHODS FOR CREATING A POWDER REMOVAL CAP VIA ADDITIVE MANUFACTURING_simplified_abstract_(gm global technology operations llc)

Inventor(s): Andrew Thomas Cunningham of Royal Oak MI US for gm global technology operations llc, Ante Tony Lausic of Burlington CA for gm global technology operations llc, Adam Golembeski of Charlotte NC US for gm global technology operations llc, Patrick J. Eding of Fremont MI US for gm global technology operations llc

IPC Code(s): B22F10/73, B22F10/68, B33Y40/20

CPC Code(s): B22F10/73



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.


20250108716. METHODS, VEHICLE SYSTEMS, AND VEHICLES FOR MANAGING ENERGY TRANSFER FROM A PORTABLE ENERGY SOURCE_simplified_abstract_(gm global technology operations llc)

Inventor(s): Michael D. Alarcon of Markham CA for gm global technology operations llc, Grant L. Meade of Whitby CA for gm global technology operations llc, Manvir Dulai of Brampton CA for gm global technology operations llc, Steve Ashley Warden of Port Perry CA for gm global technology operations llc, Ralph David Schlottke of Whitby CA for gm global technology operations llc, Asadullah Noorzaie of Scarborough CA for gm global technology operations llc, Christian Teixeira of Saint Louis MO US for gm global technology operations llc, Bridget A. Beaton of Novi MI US for gm global technology operations llc

IPC Code(s): B60L53/57, B60D1/64, B60L53/16, B60L53/62, B60L53/63, B60L53/66, H02J7/00

CPC Code(s): B60L53/57



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.


20250108726. METHOD FOR CONTROLLING A DISTRIBUTED DIRECT CURRENT TO DIRECT CURRENT CONVERTER SYSTEM_simplified_abstract_(gm global technology operations llc)

Inventor(s): William R. Cawthorne of Milford MI US for gm global technology operations llc, Brian A. Welchko of Oakland Township MI US for gm global technology operations llc, Bradley David Smrdel of Shelby Township MI US for gm global technology operations llc, Mohamed Kamel of Birmingham MI US for gm global technology operations llc, Carrie Bradley of Aptos CA for gm global technology operations llc, Suresh Gopalakrishnan of Troy MI US for gm global technology operations llc, Chandra S. Namuduri of Troy MI US for gm global technology operations llc, David W. Walters of Sterling Heights MI US for gm global technology operations llc

IPC Code(s): B60L58/22, B60L1/00, B60L58/12

CPC Code(s): B60L58/22



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.


20250110178. STATE-OF-CHARGE ESTIMATOR FOR LITHIUM-ION BATTERY USING HYSTERESIS MODEL_simplified_abstract_(gm global technology operations llc)

Inventor(s): Jun-mo Kang of Ann Arbor MI US for gm global technology operations llc, Hanho Yun of Oakland Township MI US for gm global technology operations llc

IPC Code(s): G01R31/367, G01R31/364, G01R31/3842, G01R31/387, H01M10/0525, H01M10/42

CPC Code(s): G01R31/367



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 (v) 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.


20250110215. SENSOR ASSEMBLY_simplified_abstract_(gm global technology operations llc)

Inventor(s): Ratandeep Singh Kukreja of Auburn Hills MI US for gm global technology operations llc, Nicholas Paul William Pieczonka of Windsor CA for gm global technology operations llc, William Reginald Collin of Dearborn MI US for gm global technology operations llc

IPC Code(s): G01S7/481, B08B1/00, B08B1/04

CPC Code(s): G01S7/4813



Abstract: a sensor assembly including: a rotatable mount; transmitter components and receiver components supported by the rotatable mount so as to rotate with the rotatable mount; a motor configured to rotate the rotatable mount by rotating a shaft connected to the rotatable mount; a bearing configured to support the shaft; and a contaminant trap between the bearing and each of the transmitter components and the receiver components, the contaminant trap configured to capture contaminants to restrict passage of contaminants from the bearing to the transmitter components and the receiver components.


20250111620. AUGMENTED REALITY DOOR OPENING WARNING_simplified_abstract_(gm global technology operations llc)

Inventor(s): Steven Landry of Royal Oak MI US for gm global technology operations llc, Joseph F. Szczerba of Grand Blanc MI US for gm global technology operations llc

IPC Code(s): G06T19/00, B60R21/01, B60R21/015, G06V10/764, G06V20/58

CPC Code(s): G06T19/006



Abstract: a system for providing warning to an occupant within a vehicle prior to the occupant exiting the vehicle includes a plurality of onboard sensors adapted to collect information related to an environment outside the vehicle, an occupant monitoring system adapted to monitor and detect movement of the occupant within the vehicle, a display screen adapted to be viewed by the occupant within the vehicle, a system controller adapted to detect when the occupant within the vehicle is about to exit the vehicle, detect a position of the occupant within the vehicle, display, on the display screen, a view of an environment outside of the vehicle, determine if there is a hazardous object within the environment outside of the vehicle, and classify the hazardous object, and provide augmented reality alerts within the display screen.


20250112220. METHOD OF, AND APPARTUS FOR, ANNEALING THE EXPOSED METAL EDGE MARGIN OF A BATTERY ELECTRODE_simplified_abstract_(gm global technology operations llc)

Inventor(s): Raghavendra Saikrishna Keerthi MANDA of Northville MI US for gm global technology operations llc, Daniel Gerardo GONZALEZ of Lake Orion MI US for gm global technology operations llc, Jeffery Thomas WHITE, JR. of Chesterfield MI US for gm global technology operations llc, Srilakshim KATAR of Troy MI US for gm global technology operations llc, Subrahmanyam GORIPARTI of Troy MI US for gm global technology operations llc, Liang XI of Northville MI US for gm global technology operations llc

IPC Code(s): H01M4/04

CPC Code(s): H01M4/0471



Abstract: a method of annealing an exposed metal edge margin of a coated battery electrode strip to relieve stress and reduce wrinkling includes applying a magnetic field through an apertured magnetic shield to the exposed metal edge margins. the magnetic field induces eddy currents that heat the exposed metal edge margins to an annealing temperature, while the magnetic shield blocks the magnetic field near the near the coating to protect it from overheating. an apparatus for annealing an exposed metal edge margin of a coated battery electrode strip includes a source of magnetic field and an apertured magnetic shield. in an alternative embodiment, the apparatus includes a laser is for heating the exposed metal edge margin without overheating the coating.


20250112271. FLUORINATED PHOSPHATE ESTER ADDITIVES FOR ELECTROLYTES OF BATTERIES INCLUDING LITHIUM- AND MANGANESE-RICH POSITIVE ELECTRODES_simplified_abstract_(gm global technology operations llc)

Inventor(s): Chuanlong Wang of Troy MI US for gm global technology operations llc, Xiaosong Huang of Novi MI US for gm global technology operations llc

IPC Code(s): H01M10/0567, H01M4/36, H01M4/48, H01M4/505, H01M4/525, H01M4/587, H01M10/0525, H01M10/0568, H01M10/0569

CPC Code(s): H01M10/0567



Abstract: a battery that cycles lithium ions includes a positive electrode and an electrolyte infiltrating the positive electrode. the positive electrode includes an electroactive material including a layered lithium transition metal oxide. the electrolyte includes an organic solvent, a lithium salt, and a fluorinated phosphate ester additive. the fluorinated phosphate ester includes at least one of: (i) a chemical compound comprising a phosphate group attached to two or three branched-chain fluorocarbon groups, or (ii) a chemical compound comprising a cyclic phosphate group attached to a fluorocarbon group.


20250112294. COOLANT CONTAINMENT SYSTEM FOR A BATTERY PACK_simplified_abstract_(gm global technology operations llc)

Inventor(s): William Yu Chen of Troy MI US for gm global technology operations llc, Xianfeng Yan of Clawson MI US for gm global technology operations llc, Qaiser Khan of Novi MI US for gm global technology operations llc

IPC Code(s): H01M10/6568, B60L50/64, H01M10/613, H01M10/6554, H01M10/6556, H01M50/204, H01M50/258, H01M50/691

CPC Code(s): H01M10/6568



Abstract: a coolant containment system for a battery pack includes a coolant retention container defining a containment space, an inlet connected to the coolant retention container, the inlet connected to an inlet line configured to receive a coolant, an outlet connected to the coolant retention container, the outlet connected to an outlet line, the outlet line configured return a coolant, a drain plug connected to the coolant retention container and in communication with the containment space. the inlet line and the outlet line are disposed entirely within the containment space and any coolant from a leak is retained within the containment space and exits the containment space to an environment outside the battery tray via the drain plug.


20250112500. NOVEL SHAFT EMBEDDED CONTACTLESS POWER TRANSFER FOR A SEPARATELY EXCITED MACHINE_simplified_abstract_(gm global technology operations llc)

Inventor(s): Muhammad A. Zahid of Troy MI US for gm global technology operations llc, Khorshed Mohammed Alam of Canton MI US for gm global technology operations llc, Mazharul Chowdhury of Canton MI US for gm global technology operations llc, Junghoon Kim of Springboro OH US for gm global technology operations llc, Yilun Luo of Ann Arbor MI US for gm global technology operations llc

IPC Code(s): H02J50/10, B60L53/12, B60L53/20, H01F27/06, H01F27/08, H01F27/24, H01F27/28

CPC Code(s): H02J50/10



Abstract: a power transfer system may include a rotating magnetic core; a rotating high index core winding within the rotating magnetic core; a stationary high index core winding within the rotating high index core winding; and a stator referenced magnetic core within the stationary high index core winding. the power transfer system may include a rotor rectifier mounting plate, operatively attached to the rotating magnetic core, and/or a first and a second stationary high index core winding; and/or the stationary high index core winding and the stator referenced magnetic core do not rotate and/or the rotor rectifier mounting plate includes rectifiers to convert ac to dc; and/or the rotor rectifier mounting plate is further configured as a heat sink; and/or the rotor rectifier mounting plate is operatively attached to the rotating magnetic core via adhesive; and/or cooling fluid is allowed to pass through the power transfer system.


20250112512. RELUCTANCE ASSISTED AXIAL FLUX ELECTRIC MOTOR_simplified_abstract_(gm global technology operations llc)

Inventor(s): Vincent Fedida of Shanghai CN for gm global technology operations llc, Alan G. Holmes of Clarkston MI US for gm global technology operations llc, Chengwu Duan of Shanghai CN for gm global technology operations llc, Jian Yao of Shanghai CN for gm global technology operations llc

IPC Code(s): H02K1/2798, H02K1/24, H02K16/02

CPC Code(s): H02K1/2798



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.


20250112577. SYSTEMS AND METHODS FOR BI-DIRECTIONAL ONBOARD BATTERY CHARGING FUNCTIONS IN SEPARATELY EXCITED MOTOR DRIVES_simplified_abstract_(gm global technology operations llc)

Inventor(s): Khorshed Mohammed Alam of Canton MI US for gm global technology operations llc, Yilun Luo of Ann Arbor MI US for gm global technology operations llc, Junghoon Kim of Springboro OH US for gm global technology operations llc, Chandra S. Namuduri of Troy MI US for gm global technology operations llc, Muhammad A. Zahid of Troy MI US for gm global technology operations llc, Mazharul Chowdhury of Canton MI US for gm global technology operations llc, Lei Hao of Troy MI US for gm global technology operations llc, Seyedrasoul Hosseini of Troy MI US for gm global technology operations llc

IPC Code(s): H02P27/06, B60L50/60, B60L53/20, H01R39/08, H02J7/00, H02K11/00, H02K11/33, H02K15/00, H02M1/42

CPC Code(s): H02P27/06



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.


20250112578. ELECTRIC MOTOR CONTROL_simplified_abstract_(gm global technology operations llc)

Inventor(s): Minh-Khai Nguyen of Troy MI US for gm global technology operations llc, Yilun Luo of Ann Arbor MI US for gm global technology operations llc

IPC Code(s): H02P27/08, B60L15/00, B60L50/51, H02P21/14

CPC Code(s): H02P27/08



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.


20250112580. SLEW RATE CONTROLLABLE SYSTEM FOR POWERING ELECTRIC MACHINE_simplified_abstract_(gm global technology operations llc)

Inventor(s): Yilun Luo of Ann Arbor MI US for gm global technology operations llc, Khorshed Mohammed Alam of Canton MI US for gm global technology operations llc, Eric B. Gach of Clarkston MI US for gm global technology operations llc, Chandra S. Namuduri of Troy MI US for gm global technology operations llc, Rashmi Prasad of Troy MI US for gm global technology operations llc, Mohammad F. Momen of Rochester Hills MI US for gm global technology operations llc

IPC Code(s): H02P27/08, B60L15/00, H02M1/08, H02M7/5395

CPC Code(s): H02P27/085



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.


20250112582. METHODS, SYSTEMS, AND VEHICLES CONFIGURED FOR DETERMINING A STATOR RESISTANCE OF AN ELECTRIC MOTOR_simplified_abstract_(gm global technology operations llc)

Inventor(s): Anno Yoo of Rochester MI US for gm global technology operations llc, Cheng Gong of Troy MI US for gm global technology operations llc

IPC Code(s): H02P29/64, B60L15/20, G01R27/16

CPC Code(s): H02P29/64



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.


20250113122. TELEMATICS SYSTEM_simplified_abstract_(gm global technology operations llc)

Inventor(s): Christopher L. Oesterling of Troy MI US for gm global technology operations llc, Prerak Modh of Hanover Park IL US for gm global technology operations llc, Kelly Amanda Jones of St. Joseph MI US for gm global technology operations llc

IPC Code(s): H04Q9/00

CPC Code(s): H04Q9/00



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.


GM GLOBAL TECHNOLOGY OPERATIONS LLC patent applications on April 3rd, 2025