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：US20230361591A1

公开(公告)日：2023-11-09

申请号：US17739341

申请日：2022-05-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Srikanth ARISETTY ,  Venkata Prasad ATLURI ,  Charles W. WAMPLER, II ,  Chandra S. NAMUDURI ,  Raghunathan K

IPC: H02J7/00 ,  H01M10/42 ,  H01M4/38 ,  H01M4/505 ,  H01M4/583 ,  H01M4/525 ,  H01M10/44

CPC classification number: H02J7/00712 ,  H02J7/0013 ,  H02J7/0048 ,  H01M10/425 ,  H01M4/386 ,  H01M4/505 ,  H01M4/583 ,  H01M4/525 ,  H01M10/441 ,  H01M2010/4271

Abstract: A battery pack includes: first battery modules, the first battery modules each including first battery cells having a first battery cell chemistry and not including second battery cells having a second battery cell chemistry that is different than the first battery cell chemistry; second battery modules, the second battery modules each including the second battery cells having the second battery cell chemistry and not including the first battery cells having the first battery chemistry; switches; and a switch control module configured to actuate the switches and control charging and discharging of the first and second battery modules.

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：US20240012063A1

公开(公告)日：2024-01-11

申请号：US17889440

申请日：2022-08-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jingyuan LIU ,  Dave G. RICH ,  Manjit SWAMI ,  Charles W. WAMPLER, II ,  Dewen KONG

IPC: G01R31/392 ,  H02J7/00 ,  G01R31/3835 ,  B60L58/12 ,  B60L58/16 ,  B60L53/00

CPC classification number: G01R31/392 ,  H02J7/0048 ,  H02J7/005 ,  H02J7/00712 ,  H02J7/0068 ,  G01R31/3835 ,  B60L58/12 ,  B60L58/16 ,  B60L53/00

Abstract: A state of health (SOH) based control system includes: a memory configured to store an algorithm including instructions for determining a SOH of a power source; and a control module configured to receive a voltage signal indicating a voltage of the power source and execute the instructions. The instructions include: determining a state of charge (SOC) of the power source; generating a differential signal based on a change in the voltage and a change in the state of charge; determining an inflection point and an end of charge point of the differential signal; determining the SOH of the power source based on the inflection point and the end of charge point; and performing at least one of a control operation or a countermeasure based on the SOH.

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.