公开(公告)号：US12176510B2

公开(公告)日：2024-12-24

申请号：US17542974

申请日：2021-12-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jingyuan Liu ,  Dewen Kong ,  Zhe Li ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M16/00 ,  H01G11/08 ,  H01G11/28 ,  H01G11/52 ,  H01G11/56 ,  H01G11/58 ,  H01M10/0525 ,  H01M50/51

Abstract: A bipolar capacitor assisted battery includes a bipolar capacitor including a first capacitor, and a second capacitor. The second capacitor is connected in series with the first capacitor. A lithium ion battery is connected in parallel to the bipolar capacitor.

公开(公告)号：US20230049024A1

公开(公告)日：2023-02-16

申请号：US17401651

申请日：2021-08-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Aaron B. Bloom ,  Dave G. Rich ,  Jingyuan Liu ,  Dewen Kong

IPC: H01M10/615 ,  H01M10/625 ,  H01M10/6571

Abstract: A system for vehicle battery heating is provided. The system includes a battery, including a plurality of battery cells. The system further includes a computerized battery controller operable to selectively energize a portion of the battery cells to provide an increased temperature of the portion of the battery cells. The portion of the battery cells may be energized in a distributed pattern or a focused pattern.

公开(公告)号：US20240347871A1

公开(公告)日：2024-10-17

申请号：US18361962

申请日：2023-07-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jingyuan Liu ,  Dewen Kong ,  Zhe Li ,  Haijing Liu ,  Dave G. Rich

IPC: H01M50/51 ,  H01M10/0525 ,  H01M10/30 ,  H01M10/48

CPC classification number: H01M50/51 ,  H01M10/0525 ,  H01M10/30 ,  H01M10/482 ,  H01M2220/20

Abstract: A battery includes: a positive output terminal; a negative output terminal; a first battery module that is connected to the positive output terminal and the negative output terminal and that includes: a first string of first and second types of battery cells that are electrically connected in series, where the first type is different than the second type; and a second battery module that is electrically connected in parallel with the first battery module and that includes: a second string of the first and second types of battery cells that are electrically connected in series.

公开(公告)号：US20240219330A1

公开(公告)日：2024-07-04

申请号：US18134645

申请日：2023-04-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei Wang ,  Jingyuan Liu ,  Mengyuan Chen ,  Michelle H. Wiebenga ,  Bradley R. Frieberg ,  Qili Su ,  Meiyuan Wu

IPC: G01N25/20

CPC classification number: G01N25/20

Abstract: A method for testing a sample of a battery cell includes arranging the sample of the battery cell in a sample pan of a test crucible; arranging a spacer on the sample of the battery cell; sealing the sample pan; and performing differential scanning calorimetry (DSC) testing of the sample.

公开(公告)号：US20240100991A1

公开(公告)日：2024-03-28

申请号：US18349603

申请日：2023-07-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Aaron B. Bloom ,  Dave G. Rich ,  Dewen Kong ,  Jingyuan Liu ,  Wing-Fai Ha

IPC: B60L58/16 ,  B60L53/62 ,  B60L58/18

CPC classification number: B60L58/16 ,  B60L53/62 ,  B60L58/18 ,  B60L2240/547 ,  B60L2240/549

Abstract: A battery system for a vehicle includes: first and second positive terminals and a negative terminal; switches; at least three strings of battery cells, each of the strings configured to, at different times be: connected to the first positive terminal via first ones of the switches; connected 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: identify one of a short circuit and an over voltage condition in a first voltage bus; when the one of the short circuit and the over voltage condition is identified, identify N of the strings of battery cells with the N lowest state of health values; and control switching of the switches and connect the identified N strings of battery cells to the first voltage bus.

公开(公告)号：US20250096256A1

公开(公告)日：2025-03-20

申请号：US18502302

申请日：2023-11-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen Kong ,  Meiyuan Wu ,  Jingyuan Liu ,  Haijing Liu ,  Mark W. Verbrugge

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/04 ,  H01M4/505 ,  H01M4/58 ,  H01M4/62

Abstract: Aspects of the disclosure include systems and methods for manufacturing thermally stable nickel-rich cathodes. An exemplary method can include providing an active material including a plurality of active material particles. The plurality of active material particles include nickel. A nanoparticle slurry additive having a plurality of nanoparticles is provided. The plurality of nanoparticles include one or more of a thermally stable olivine type material, a thermally stable spinel type material, and a thermally stable manganese-nickel dioxide type material. The method includes forming a slurry by mixing the active material and the nanoparticle slurry additive. The plurality of nanoparticles form a thermal inhibitor layer on and in direct contact with a surface of the plurality of active material particles. A free-standing electrode film is formed by calendering the slurry and the free-standing electrode film is laminating to a current collector to define a thermally stable nickel-rich cathode.

公开(公告)号：US20240100955A1

公开(公告)日：2024-03-28

申请号：US18350073

申请日：2023-07-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Aaron B. BLOOM ,  Dave G. Rich ,  Dewen Kong ,  Jingyuan Liu ,  Wing-Fai Ha

IPC: B60L3/00

CPC classification number: B60L3/0046

Abstract: A low-voltage mitigation and recovery system includes: an auxiliary power module that converts an output voltage of a power source of a vehicle to a charging voltage, the power source provides power to power a propulsion system of the vehicle; a contactor that supplies power from the power source to the auxiliary power module; a first control module that controls states of the auxiliary power module and the contactor. A second control module is integrated within a MODACS, monitors parameters of blocks of cells of the MODACS, and, based on at least one of the parameters: configures a switch network of the MODACS to disconnect a first set of blocks of the MODACS from loads and to connect or maintain connection of a second set of blocks of the MODACS to selected ones of the loads; and wakes up the first control module to jump start and recover the MODACS.

公开(公告)号：US11837704B2

公开(公告)日：2023-12-05

申请号：US17561031

申请日：2021-12-23

Applicant: GM Global Technology Operations LLC

Inventor： Jingyuan Liu ,  Dewen Kong ,  Dave G. Rich ,  Haijing Liu ,  Lyall K. Winger ,  Mark W. Verbrugge

IPC: H01M10/615 ,  H01M50/569

CPC classification number: H01M10/615 ,  H01M50/569

Abstract: An electrochemical device according to various aspects of the present disclosure includes an electrochemical cell and an inductor coil. The electrochemical cell includes a current collector. The current collector includes an electrically-conductive material. The inductor coil is configured to generate a magnetic field. The magnetic field is configured to induce an eddy current in the current collector to generate heat in the current collector. In various aspects, the present disclosure also provides a method of internally heating an electrochemical cell. In various aspects, the present disclosure also provides a method of controlling heating of an electrochemical cell.

公开(公告)号：US20250158077A1

公开(公告)日：2025-05-15

申请号：US18914372

申请日：2024-10-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Jingyuan Liu ,  Meiyuan Wu ,  Yan Wu ,  Haijing Liu

IPC: H01M4/66 ,  H01M4/02 ,  H01M4/131

Abstract: A cathode electrode includes a multi-functional cathode current collector including a cathode current collector and a layer including a positive temperature coefficient (PTC) material arranged adjacent to the cathode current collector. A cathode active material layer is arranged on the multi-functional cathode current collector and includes a cathode active material including nickel.

公开(公告)号：US11971455B2

公开(公告)日：2024-04-30

申请号：US17858202

申请日：2022-07-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu Duan ,  Jian Yao ,  Dewen Kong ,  Jingyuan Liu

IPC: G01R31/3842 ,  G01R31/392 ,  H01M10/48 ,  H02J7/00 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525

CPC classification number: G01R31/3842 ,  G01R31/392 ,  H01M10/48 ,  H02J7/0048 ,  H02J7/005 ,  H01M2004/028 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525

Abstract: A mixed chemistry battery is provided. The mixed chemistry battery includes a reference module having a first chemistry and a battery module having a second chemistry that is different that the first chemistry, the battery module is connected to the reference module in series. The mixed chemistry battery also includes a battery monitoring system configured to monitor an open circuit voltage of the reference module, an open circuit voltage of the battery module, and a current flow through the reference module and the battery module. The battery monitoring system is further configured to calculate a state-of-charge (SOC) and state-of-health (SOH) of the battery module based at least in part on a SOC of the reference module.