公开(公告)号：US20220340198A1

公开(公告)日：2022-10-27

申请号：US17236422

申请日：2021-04-21

Applicant: GM Global Technology Operations LLC

Inventor： Insu Chang ,  Jun-mo Kang ,  SeungHwan Keum

IPC: B62D6/00 ,  B62D5/04 ,  B62D15/02 ,  B60R11/04

Abstract: A yaw stability control system is provided for a motor vehicle. The system includes one or more cameras, a plurality of wheel speed sensors, a yaw angle sensor, and a steering angle sensor. The system further includes an electric motor connected to a reaction wheel. The system further includes a processor and a memory including instructions such that the processor is programmed to: determine a desired yaw angle of the motor vehicle based on a video signal, speed signals, a yaw signal, and a steering signal. The processor is further programmed to generate an actuation signal associated with the desired yaw angle. The electric motor angularly rotates the reaction wheel at a predetermined angular rate in a predetermined rotational direction to produce a counter-acting torque that rotates the motor vehicle to the desired yaw angle, in response to the electric motor receiving the actuation signal from the processor.

公开(公告)号：US20220212565A1

公开(公告)日：2022-07-07

申请号：US17142459

申请日：2021-01-06

Applicant: GM Global Technology Operations LLC

Inventor： Jun-mo Kang ,  Insu Chang

IPC: B60L58/21 ,  G01R31/387 ,  G01R31/367

Abstract: A method and system for estimating state of charge of a lithium battery cell of a vehicle is provided. The method comprises providing a non-linear function of the lithium battery cell, a normalized lithium surface density and an actual voltage at a current of the lithium battery cell having an internal resistance. The method further comprises determining an actual lithium surface density based on the actual voltage relative to an inverse of the non-linear function. The method further comprises determining a varying parameter based on the actual lithium surface density relative to a first diffusion model. The method further comprises determining a predicted lithium surface density based on the varying parameter relative to a second diffusion model. The method further comprises determining an estimated state of charge of the lithium battery cell when a difference between the predicted and actual lithium surface densities is less than a first threshold.

公开(公告)号：US20210146785A1

公开(公告)日：2021-05-20

申请号：US16687927

申请日：2019-11-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue-Yun Wang ,  Jun-mo Kang ,  Dongxu Li ,  Chunhao J. Lee ,  Jinzhu Chen ,  Donald K. Grimm ,  David J. Brooks

IPC: B60L15/20 ,  G06N20/00 ,  G06N5/04

Abstract: A method of using a control system to estimate range of an electrified vehicle operated by a driver includes monitoring a first set of driver behaviors while the vehicle is in operation and comparing the monitored first set of driver behaviors to a plurality of known profiles having respective stored behaviors. The method may include matching the first set of driver behaviors to at least one of the known profiles to create an adapted driver model, modeling an adapted drive cycle profile based on the matched adapted driver model, and calculating a predicted driving range based on the adapted drive cycle profile. The method may classify the monitored first set of driver behaviors as at least one of conservative, neutral, and aggressive, relative to the plurality of known profiles, and model the adapted drive cycle profile is further based on the conservative, neutral, or aggressive classification.

公开(公告)号：US10760523B1

公开(公告)日：2020-09-01

申请号：US16443310

申请日：2019-06-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo Kang ,  Hanho Yun ,  Insu Chang

IPC: F02D41/26 ,  F02D41/40 ,  F02D41/20 ,  F02D41/18 ,  F02D41/14

Abstract: A system and method for controlling operation of an internal combustion engine having at least one fuel injector. A controller is configured to selectively command the at least one fuel injector to deliver a primary fuel injection of a first fuel quantity and a secondary fuel injection of a second fuel quantity. The first fuel quantity is above a predefined threshold and the second fuel quantity is at or below the predefined threshold. The controller is configured to command a primary pulse width and a secondary pulse width, based in part on a respective desired fuel injection mass and respective initialized values of fuel injector slope. Operation of the fuel injectors is controlled based in part on a converged primary fuel injector slope and a converged secondary fuel injector slope determined at partially from a comparison of a calculated fuel mass and an estimated fuel mass.

公开(公告)号：US10519835B2

公开(公告)日：2019-12-31

申请号：US15836197

申请日：2017-12-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo Kang

IPC: F01N3/22 ,  F02B75/18 ,  F02B75/32 ,  F01N13/08

Abstract: An internal combustion engine includes first and second power cylinders and an expander cylinder, and is configured to operate in an expander mode and a bypass mode by selectively fluidly coupling exhaust flow from the first and second power cylinders to the expander cylinder. Operation includes commanding a transition from the bypass mode to the expander mode, including retarding openings of intake valves of the first and second power cylinders to a LIVC position. Exhaust valves of the power cylinders are controlled to effect fluid flow to the expander cylinder, and opening of an outlet valve of the expander cylinder is controlled to a maximum advanced state. The openings of the intake valves of the first and second power cylinders are controlled to desired positions associated with engine operation in the expander mode.

公开(公告)号：US12255472B2

公开(公告)日：2025-03-18

申请号：US17575846

申请日：2022-01-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo Kang ,  Charles W. Wampler, II ,  Dave G. Rich

IPC: H01M10/44 ,  G01R31/382 ,  H01M10/46 ,  H01M10/48 ,  H02J7/00

Abstract: A battery system includes: two battery modules, each including three strings of battery cells that are configured to, at different times be: connected in series and to a first positive terminal via first ones of switches; connected in parallel and to a second positive terminal via second ones of the switches; and disconnected from both of the first and second positive terminals; and a switch control module configured to: determine state of charges (SOCs) of the strings, respectively; determine periods of phases, respectively, based on the SOCs; determine first periods for connecting ones of the strings in parallel; divide one of the phases into N equal length periods; selectively decrease N; when a number of the first periods that end closest to one of N period endings is at least a predetermined value, adjust the first periods to the respective closest ones of the N period endings.

公开(公告)号：US12244148B2

公开(公告)日：2025-03-04

申请号：US18170220

申请日：2023-02-16

Applicant: GM Global Technology Operations LLC

Inventor： Mohamed Ahmed Kamel Ahmed ,  Robert A. De Stefano ,  Jun-mo Kang

IPC: H02J3/14 ,  B60R16/033 ,  H02J1/00 ,  H02J1/14

Abstract: Examples described herein provide a method that includes providing a first electric power pathway from a battery to a first auxiliary low voltage bus via a direct-current (DC)/DC converter and a first switch. The method further includes providing a second electric power pathway from the battery to a second auxiliary low voltage bus via the DC/DC converter and a second switch. The method further includes selectively controlling at least one of the first switch or the second switch to manage a load in one of the first auxiliary low voltage bus or the second auxiliary low voltage bus based at least in part on the battery or the load.

公开(公告)号：US20250030039A1

公开(公告)日：2025-01-23

申请号：US18355761

申请日：2023-07-20

Applicant: GM Global Technology Operations LLC

Inventor： Jun-mo Kang ,  Insu Chang ,  Yongjie Zhu ,  Chunhao J. Lee ,  Chen-fang Chang

IPC: H01M10/04 ,  B60L50/64 ,  B60L58/10 ,  H01M10/48 ,  H01M50/202 ,  H01M50/211 ,  H01M50/242 ,  H01M50/249

Abstract: A pressure management system includes a pressure plate configured to be disposed at an initial position relative to a battery cell in a housing, the initial position including a first orientation, a tilting assembly configured to allow the pressure plate to change from a first orientation to a second orientation based on the expansion force being non-uniform. The system includes a mechanical linkage attached to the pressure plate and configured to move laterally in response to the expansion force and translate the expansion force to a reactive force, and a biasing system including a biasing member configured to resist a lateral movement of the mechanical linkage. The biasing system is configured to apply a biasing force that causes the mechanical linkage to apply the reactive force, and based on the expansion force being non-uniform, is controllable to change the biasing force to balance an internal pressure of the cell.

公开(公告)号：US20250030037A1

公开(公告)日：2025-01-23

申请号：US18355115

申请日：2023-07-19

Applicant: GM Global Technology Operations LLC

Inventor： Alexander Millerman ,  Chunhao J. Lee ,  Yongjie Zhu ,  Insu Chang ,  Jun-mo Kang ,  Chen-fang Chang

IPC: H01M10/04 ,  H01M10/48 ,  H01M50/249

Abstract: A vehicle includes an apparatus for performing a method of controlling a pressure within a battery. The battery is disclosed between a support plate at a first side of the battery and a pressure plate disposed at a second side of the battery opposite the first side. The pressure plate is movable with respect to the support plate to control the pressure of the battery and including a first plate wedge. The first actuator wedge is moved parallel to the pressure plate with the first actuator wedge in contact with the first plate wedge to control a force applied by the first actuator wedge to the first plate wedge to move the pressure plate with respect to the support plate. Moving the pressure plate controls the pressure within the battery.

公开(公告)号：US12074505B2

公开(公告)日：2024-08-27

申请号：US17305642

申请日：2021-07-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SeungHwan Keum ,  Jun-mo Kang ,  Insu Chang ,  Young J. Kim

IPC: H02K9/19 ,  H02K7/10

CPC classification number: H02K9/19 ,  H02K7/10 ,  H02K2209/00

Abstract: In various embodiments, systems, apparatuses and methods are provided to distribute coolant to an electric motor. The apparatus includes a pan configured with a set of holes for coolant flow; an assembly including a set of bar linkages, a set of discs, and a single actuator motor wherein the assembly is attached to the pan wherein the single actuator motor is linked via bar linkages to discs that enable configuring a planar angle of the pan to obtain an optimum hole location of holes for coolant flow; and in response to external disturbances to the apparatus that redirect the coolant flow from the target region of the electric motor, the single actuator motor is controlled by an algorithm to change the planar angle of the pan to obtain the optimum hole location to direct coolant flow to the target region of the electric motor.