公开(公告)号：US12266801B2

公开(公告)日：2025-04-01

申请号：US17737084

申请日：2022-05-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen Kong ,  Meiyuan Wu ,  Si Chen ,  Haijing Liu

IPC: H01M4/62 ,  H01M4/02

Abstract: An active material component of a composition for forming an electrode of a battery in a dry process is provided. The active material component includes a dry powder including a plurality of grains of an active material. The active material component further includes an electrically conductive filler material attached to each of the plurality of grains.

公开(公告)号：US11721843B2

公开(公告)日：2023-08-08

申请号：US16779780

申请日：2020-02-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen Kong ,  Xiaochao Que ,  Dave G. Rich ,  Si Chen ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M10/42 ,  H01M10/48 ,  H01M10/0525 ,  H01G11/24 ,  H01G11/58 ,  H01G11/46 ,  G01R31/396 ,  G01R31/3835 ,  H01G11/06 ,  H01M50/20 ,  H01M50/502 ,  H01M50/543

CPC classification number: H01M10/4264 ,  G01R31/3835 ,  G01R31/396 ,  H01G11/06 ,  H01G11/24 ,  H01G11/46 ,  H01G11/58 ,  H01M10/0525 ,  H01M10/482 ,  H01M50/20 ,  H01M50/502 ,  H01M50/543 ,  H01M2010/4271 ,  H01M2220/20

Abstract: A capacitor-assisted battery module includes a housing, a positive terminal, a negative terminal, one or more capacitor-assisted battery cells and one or more first switches. The one or more capacitor-assisted battery cells are disposed in the housing and include one or more battery terminals and one or more capacitor terminals. The one or more battery terminals are connected to battery electrodes. The one or more capacitor terminals are connected to capacitor electrodes. At least one of the one or more battery terminals and the capacitor terminals is connected to the negative terminal. One or more first switches is configured to connect the one or more capacitor terminals to the positive terminal. An overall voltage of the capacitor assisted battery module is measured across the positive terminal and the negative terminal.

公开(公告)号：US20250006990A1

公开(公告)日：2025-01-02

申请号：US18446262

申请日：2023-08-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Si Chen ,  Ziqi Wei ,  Lidan Xing ,  Haijing Liu

IPC: H01M10/0567 ,  C07C311/48 ,  H01M4/04 ,  H01M4/133 ,  H01M4/62 ,  H01M10/42

Abstract: A battery that cycles lithium ions includes a negative electrode and an ionically conductive electrolyte. The negative electrode includes electroactive negative electrode particles embedded in a polytetrafluoroethylene matrix. The electrolyte includes an organic solvent, an inorganic lithium salt, and a functional additive consisting of a chemical compound including a bis(trifluoromethanesulfonimide group and a substituted phenyl group.

公开(公告)号：US11784010B2

公开(公告)日：2023-10-10

申请号：US16685389

申请日：2019-11-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen Kong ,  Xiaochao Que ,  Meiyuan Wu ,  Si Chen ,  Haijing Liu ,  Mark W Verbrugge

IPC: H01G11/06 ,  H01G11/34 ,  H01G11/24 ,  H01G11/72 ,  H01G11/86 ,  H01M10/0525 ,  H01G11/46 ,  H01M4/06 ,  H01M4/13 ,  H01M4/62 ,  H01M4/02

CPC classification number: H01G11/06 ,  H01G11/24 ,  H01G11/34 ,  H01G11/46 ,  H01G11/72 ,  H01G11/86 ,  H01M4/06 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20

Abstract: A capacitor-assisted electrode for an electrochemical cell that cycles lithium ions is provided. The capacitor-assisted electrode may include at least two electroactive materials disposed on one or more surfaces of a current collector. A first electroactive material of the at least two electroactive materials may have a first reversible specific capacity and forms a first electroactive material having a first press density. A second electroactive material of the at least two electroactive materials has a second reversible specific capacity and forms a second electroactive material having a second press density. The second reversible specific capacity may be different from the first reversible specific capacity. The second press density may be different from the first press density. One or more capacitor materials may be disposed on or intermingled with one or more of the at least two electroactive materials.

公开(公告)号：US20230093233A1

公开(公告)日：2023-03-23

申请号：US17563295

申请日：2021-12-28

Applicant: GM Global Technology Operations LLC

Inventor： Qili Su ,  Dewen Kong ,  Si Chen ,  Haijing Liu ,  Dave G. Rich ,  Lyall K. Winger

IPC: H01M10/42 ,  H02J7/00 ,  H01M10/44

Abstract: A capacitor assisted battery module includes a first diode including an anode and a cathode. A second diode includes an anode and a cathode. The anode of the first diode is connected to the cathode of the second diode at a first node. A first capacitor assisted battery (CAB) block includes a positive terminal, a negative terminal and N CABs, where N is an integer greater than zero. The positive terminal of the first CAB block is connected to the cathode of the first diode. A second capacitor assisted battery (CAB) block includes a positive terminal, a negative terminal and N CABs, wherein the negative terminal of the second CAB block is connected to the anode of the second diode. The negative terminal of the first CAB block and the positive terminal of the second CAB block are connected to a second node.

公开(公告)号：US20240305122A1

公开(公告)日：2024-09-12

申请号：US18361253

申请日：2023-07-28

Applicant: GM Global Technology Operations LLC

Inventor： Dewen KONG ,  Si Chen ,  Haijing Liu ,  Mark W. Verbrugge

IPC: H02J7/00

CPC classification number: H02J7/007182 ,  H02J7/0048 ,  H02J7/007194

Abstract: A method includes determining a state of charge (SOC) of the battery and charging the battery using a plurality of charging steps. If the SOC of the battery is less than a predetermined SOC, the battery is charged at a first charge rate (C-rate) in a range from 3 C to 4 C in a first step until the SOC of the battery increases by a first ΔSOC. After the first ΔSOC, the battery is charged in the constant current mode at a second C-rate of 3−(1/n) C in a second step to (2+n−1)th step until the SOC of the battery increases by a second ΔSOC, where n is an integer greater than zero. After the second ΔSOC, the battery is charged in the constant current mode at a third C- rate of 2+ (1/n) C in a (2+n)th step until the SOC of the battery increases by a third ΔSOC.

公开(公告)号：US20250046855A1

公开(公告)日：2025-02-06

申请号：US18454359

申请日：2023-08-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen Kong ,  Si Chen ,  Haijing Liu ,  Mark W. Verbrugge

IPC: H01M10/0525 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569

Abstract: A battery that cycles lithium ions includes a negative electrode and an ionically conductive electrolyte. The negative electrode includes an electroactive material comprising a silicon oxide-based material. The electrolyte includes an organic solvent, a lithium salt, and a ternary additive system comprising a phosphite compound, a borate compound, and a sulfate compound.

公开(公告)号：US20230290953A1

公开(公告)日：2023-09-14

申请号：US17737084

申请日：2022-05-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen Kong ,  Meiyuan Wu ,  Si Chen ,  Haijing Liu

IPC: H01M4/62

CPC classification number: H01M4/625 ,  H01M2004/021

Abstract: An active material component of a composition for forming an electrode of a battery in a dry process is provided. The active material component includes a dry powder including a plurality of grains of an active material. The active material component further includes an electrically conductive filler material attached to each of the plurality of grains.