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    Reducing the number of keys used to secure in-vehicle networks
    123.
    发明授权
    Reducing the number of keys used to secure in-vehicle networks 有权

    公开(公告)号：US12238097B2

    公开(公告)日：2025-02-25

    申请号：US18073410

    申请日：2022-12-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Brian Farrell

    IPC: H04L9/40 ,  B60R16/023

    Abstract: An electronic control unit (ECU), or node, is configured to use a single key for all virtual ECUs (V-ECUs) having a message to transmit. The ECU also may include a security peripheral that includes the stored shared key. The security peripheral may further include a policy enabling it to detect if a request from the V-ECU is valid, in which case it generates a MAC. The security peripheral is also used to store information in a MAC Generate Allow List (MGAL), which may define the policy about when the V-ECU can transmit. The ECU may include a crypto-engine, which stores shared keys from other nodes used to verify MACs transmitted by other nodes.

    Method and system for controlling common mode electric current in an electric machine
    124.
    发明授权
    Method and system for controlling common mode electric current in an electric machine 有权

    公开(公告)号：US12237791B2

    公开(公告)日：2025-02-25

    申请号：US18182640

    申请日：2023-03-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Brent S. Gagas ,  Kerrie M. Spaven ,  Brian J. Gallert ,  Daniel J. Berry ,  Brian A. Welchko

    IPC: H02P27/08 ,  H02P21/00

    Abstract: A method, apparatus, and control system are described for operating a multiphase motor drive system including a rotary electric machine and an inverter. An AC choke filter is arranged proximal to output leads from the inverter. A reference temperature associated with the AC choke filter is determined along with an operating point of the electric machine. Operation of the inverter is controlled based upon a temperature of the AC choke filter, the reference temperature, and an operating point of the electric machine. This includes modifying a switching frequency and a PWM type in a manner that reduces the AC choke filter temperature by reducing the occurrence of switching events to protect the AC choke filter based on temperature feedback.

    Electric motor clutch actuator control systems and methods
    125.
    发明授权
    Electric motor clutch actuator control systems and methods 有权

    公开(公告)号：US12234869B1

    公开(公告)日：2025-02-25

    申请号：US18671932

    申请日：2024-05-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dongxu Li ,  Edward W. Mellet ,  Matthew Pruski ,  John Jancowski-Walsh

    IPC: F16D48/06 ,  F16D48/08

    Abstract: A clutch control system for a vehicle includes: a reset module configured to selectively start a reset operation of a clutch actuator of a clutch that engages and disengages an electric propulsion motor to and from a gearset; a target position module configured to perform the reset operation by setting a target position of the clutch actuator to follow a predetermined position profile for the reset operation, the reset operation including (a) opening an orifice between a hydraulic fluid reservoir and an pressure chamber of the clutch actuator (b) closing the orifice after the opening; and a clutch control module configured to actuate the clutch actuator based on the target position thereby performing the reset operation.

    Seat bolster activator
    126.
    发明授权
    Seat bolster activator 有权

    公开(公告)号：US12233753B2

    公开(公告)日：2025-02-25

    申请号：US17945152

    申请日：2022-09-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： David M. Aller

    IPC: B60N2/02 ,  B60N2/24

    Abstract: A seat having a seating area, an interior side bolster disposed on a first side of the seating area, and an exterior side bolster disposed on a second side of the seating area. The exterior side bolster includes an activator slidably disposed within an aperture of the exterior side bolster. The activator adjusts a height of the exterior side bolster based on a position of the activator within the aperture.

    Battery preconditioning systems and methods for electric-drive vehicles
    127.
    发明授权
    Battery preconditioning systems and methods for electric-drive vehicles 有权

    公开(公告)号：US12233738B2

    公开(公告)日：2025-02-25

    申请号：US17515830

    申请日：2021-11-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Sumit Chopra ,  Matthew L. Ehrenfeld ,  Orlando Ward-Santos

    IPC: H02J7/00 ,  B60L53/62 ,  B60L53/66 ,  B60L58/12 ,  H02J7/14

    Abstract: Presented are closed-loop feedback control systems for preconditioning batteries, methods for making/using such systems, and electric-drive vehicles with battery preconditioning capabilities. A method for operating a battery system of a motor vehicle includes a system controller receiving a recharge signal to schedule a recharge event for a battery of the vehicle. The system controller responsively derives a target preconditioning temperature for optimizing the battery recharge event, and determines the battery state of voltage or charge for at the vehicle's current location. The system controller also predicts an SOV/SOC for the battery upon arrival of the motor vehicle at a selected charging station, and estimates a preconditioning time to thermally precondition the battery to the target preconditioning temperature. The system controller then transmits one or more preconditioning signals to the thermal system to precondition the battery based at least upon the present SOV/SOC, target preconditioning temperature, and predicted battery preconditioning time.

    First aid kit alert system and a vehicle having the same
    128.
    发明授权
    First aid kit alert system and a vehicle having the same 有权

    公开(公告)号：US12232941B2

    公开(公告)日：2025-02-25

    申请号：US18307339

    申请日：2023-04-26

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Venkata Suresh Dayakar Suri

    IPC: A61F17/00 ,  B60R21/013

    Abstract: A vehicle having a first aid kit having a plurality of content items is provided. The vehicle also includes one or more impact sensors and a controller. The controller is configured to detect, using the impact sensors, a collision involving the vehicle and activate a door of the first aid kit to expose the plurality of content items to an interior of the vehicle and activating an indicator disposed on the first aid kit based on a determination that a force of the collision exceeds a first threshold value. Based on a determination that the force of the collision exceeds a second threshold value and is less than the first threshold value, the controller is configured to activate the indicator disposed on the first aid kit.

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