公开(公告)号：US20220260030A1

公开(公告)日：2022-08-18

申请号：US17176277

申请日：2021-02-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hanho YUN ,  Jun-mo KANG

IPC: F02D41/14 ,  F02D41/00 ,  F02D13/02 ,  F02P5/145 ,  F02D41/30 ,  F02D41/40

Abstract: A combustion mode module is configured to switch operation of a low-temperature combustion (LTC) engine between a spark ignition (SI) mode, a positive valve overlap (PVO) mode, and a negative valve overlap (NVO) mode. A spark control module is configured to control a spark plug to generate a spark in a cylinder of the LTC engine when the LTC engine is operating in the SI mode. A valve control module is configured to control intake and exhaust valves of the cylinder to yield a PVO and a NVO when the LTC engine is operating in the PVO mode and the NVO mode, respectively. An air/fuel (A/F) control module is configured to adjust a desired A/F ratio of the LTC engine to a rich A/F ratio when operation of the LTC engine is switched to the PVO mode from either one of the SI mode and the NVO mode.

公开(公告)号：US20230231391A1

公开(公告)日：2023-07-20

申请号：US17575797

申请日：2022-01-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo KANG ,  Charles W. WAMPLER, II ,  Dave G. RICH

IPC: H02J7/00 ,  H01M10/42 ,  H01M50/269

CPC classification number: H02J7/0019 ,  H01M10/425 ,  H01M50/269 ,  H02J7/0048 ,  H01M2010/4271

Abstract: A battery system includes: at least two battery modules, where each of the at least two battery modules includes three strings of battery cells; and a switch control module configured to: determine state of charges (SOCs) of the strings of battery cells, respectively; determine, using model predictive control based on the SOCs, periods of phases, respectively; determine, using model predictive control based on the SOCs, periods for the strings, respectively, to be connected to a second positive terminal and a negative terminal during the phases, the determination of the periods for the strings including: setting the period for one of the strings of one of the battery modules to end before the end of a phase; and setting the periods for the other two strings of the one of the battery modules to end at the end of the phase.

公开(公告)号：US20240243596A1

公开(公告)日：2024-07-18

申请号：US18096592

申请日：2023-01-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Rashmi PRASAD ,  Mohamed Ahmed Kamel AHMED ,  Chandra S. NAMUDURI ,  Jun-mo KANG

IPC: H02J7/00 ,  B60L50/60 ,  H02M3/00 ,  H05K7/20

CPC classification number: H02J7/0063 ,  B60L50/60 ,  H02M3/003 ,  H05K7/20845 ,  B60L2210/10 ,  H02J2207/20

Abstract: A battery system for a vehicle includes multiple battery cells each configured to store charge for powering an electric vehicle, a high voltage bus electrically coupled with the multiple battery cells to provide power to an electric motor, and multiple cell monitoring modules each coupled with a corresponding one of the multiple battery cells, each cell monitoring module including a controller configured to monitor operation parameters of the corresponding one of the multiple battery cells. The system includes multiple DC-DC converters in a converter housing, each DC-DC converter electrically coupled with a corresponding one of the multiple battery cells outside of the converter housing, and a low voltage bus electrically connected between the multiple DC-DC converters in the converter housing and at least one vehicle electrical component outside of the converter housing. The low voltage bus is configured to provide low voltage power to at least one vehicle electrical component.

公开(公告)号：US20230170710A1

公开(公告)日：2023-06-01

申请号：US17540116

申请日：2021-12-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H02J7/00

CPC classification number: H02J7/0014 ,  H02J7/0024 ,  H02J7/0048

Abstract: A battery system includes: switches; two battery modules, each of the two battery modules including three strings of battery cells configured to, at different times be: connected in series and to a first positive terminal via first ones of the 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 of battery cells, respectively; determine, using model predictive control, periods of phases, respectively, to balance SOCs of the battery modules; determine, using model predictive control, periods for the strings, respectively, to be connected during the phases to balance the SOCs of the strings of battery cells; and selectively actuate the switches based on the periods of the phases and the periods for the strings of battery cells.

公开(公告)号：US20230264598A1

公开(公告)日：2023-08-24

申请号：US17676936

申请日：2022-02-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo KANG ,  Chen-Fang CHANG ,  Dave G. RICH

IPC: B60L58/19 ,  B60L58/21 ,  B60L3/00

CPC classification number: B60L58/19 ,  B60L3/0046 ,  B60L58/21

Abstract: A battery system includes: at least two battery modules, each including at least three strings of battery cells that are configured to, at different times be: connected in series and to a first positive terminal via first switches; connected in parallel and to a second positive terminal via second switches; and disconnected from both of the first and second positive terminals; and a switch control module configured to: during operation in a first power mode: determine periods of phases, respectively; and determine periods for the strings, respectively, to be connected to the second positive terminal during the phases; during operation in a second power mode: set the periods of the phases, respectively, to be equal in length; and set the periods for the strings, respectively, to be equal in length; and selectively actuate the switches based on the periods of the phases and the periods for the strings.

公开(公告)号：US20230179000A1

公开(公告)日：2023-06-08

申请号：US17541097

申请日：2021-12-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo KANG ,  Charles W. WAMPLER, II ,  Dave G. RICH

IPC: H02J7/00

CPC classification number: H02J7/0014 ,  H02J7/0024 ,  H02J7/0048

Abstract: A battery system includes: a first positive terminal; a second positive terminal; a negative terminal; switches; two battery modules, each including three strings of battery cells that are configured to, at different times be: connected in series and to the first positive terminal via first ones of the switches; connected in parallel and to the 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 of battery cells, respectively; determine, using model predictive control, periods of phases, respectively, to balance SOCs of the battery modules; determine, using model predictive control, periods for the strings, respectively, including setting one of the periods for one of the strings to be included in at least two of the phases; and selectively actuate the switches based on the periods of the phases and the periods for the strings of battery cells.

公开(公告)号：US20230396090A1

公开(公告)日：2023-12-07

申请号：US17832055

申请日：2022-06-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo KANG ,  Dave G. Rich

IPC: H02J7/00

CPC classification number: H02J7/007194 ,  H02J7/0024 ,  H02J7/0019 ,  H02J7/0048

Abstract: A battery system includes: first and second positive terminals and a negative terminal; switches; at least two battery modules, each of the battery modules including at least three strings of battery cells configured to, at different times be: connected in series and to the first positive terminal via first ones of the switches; connected in parallel and to the 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: receive temperatures of the strings of battery cells, respectively; determine temperatures of the battery modules, respectively, based on the temperatures of the strings of battery cells of that battery module; and selectively actuate the switches based on at least one of: minimizing an error between the temperatures of the strings of battery cells; and minimizing an error between the temperatures of the battery modules.

公开(公告)号：US20230179001A1

公开(公告)日：2023-06-08

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: H02J7/00 ,  G01R31/382 ,  H01M10/48

CPC classification number: H02J7/0014 ,  G01R31/382 ,  H01M10/482 ,  H02J7/0048 ,  H02J7/0024 ,  H01M2220/20

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.