公开(公告)号：US20230110889A1

公开(公告)日：2023-04-13

申请号：US17565647

申请日：2021-12-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Dave G. RICH ,  Lyall K. WINGER ,  Aaron B. BLOOM ,  Jingyuan LIU ,  Meiyuan WU ,  Haijing LIU

IPC: B60L58/26 ,  B60L58/13 ,  G01C21/34 ,  B60W20/20

Abstract: A vehicle system is provided and includes a modular dynamically allocated capacity storage system (MODACS) and an active management module. The MODACS includes blocks of cells. The active management module is configured to: detect a first state of a first block of cells of the blocks of cells; determine whether a safety fault condition exists with the first block of cells based on the first state of the first block of cells; in response to detecting existence of the safety fault condition, isolate the first block of cells from other ones of the blocks of cells; subsequent to isolating the first block of cells, actively discharge and detect a second state of the first block of cells; and based on the second state, continue isolating the first block of cells or reconnecting the first block of cells such that the first block of cells is no longer isolated.

公开(公告)号：US20230019313A1

公开(公告)日：2023-01-19

申请号：US17698874

申请日：2022-03-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Leng MAO ,  Jeffrey David CAIN ,  Andrew Clay BOBEL ,  Anil K. SACHDEV ,  Dewen KONG

IPC: H01M4/38 ,  H01M4/48 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525

Abstract: The present disclosure provides a negative electrode for an electrochemical cell that cycles lithium ions. The negative electrode may include a negative electroactive material and a lithiation additive. The negative electroactive material may have a first cell voltage window. The lithiation additive may have a second cell voltage window. The second cell voltage window may be less than the first cell voltage window. When the electrochemical cell is operated in the second cell voltage window, the lithiation additive may lithiated the cell.

公开(公告)号：US20220200077A1

公开(公告)日：2022-06-23

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

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：US20210151809A1

公开(公告)日：2021-05-20

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 ,  H01M2/10 ,  H01M10/0525 ,  H01G11/24 ,  H01M2/20 ,  G01R31/396 ,  H01M2/30 ,  H01G11/46 ,  H01G11/06 ,  G01R31/3835 ,  H01G11/58 ,  H01M10/48

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：US20210151260A1

公开(公告)日：2021-05-20

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 ,  H01G11/46 ,  H01G11/72 ,  H01G11/86 ,  H01M10/0525

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：US20210110979A1

公开(公告)日：2021-04-15

申请号：US16786453

申请日：2020-02-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaochao QUE ,  Dave G. RICH ,  Haijing LIU ,  Dewen KONG

IPC: H01G11/06 ,  H01G11/50 ,  H01G11/34 ,  H01G11/66 ,  H01M4/133 ,  H01M12/02 ,  H01M10/0525

Abstract: A capacitor-assisted hybrid lithium-ion electrochemical cell assembly includes two positive electrodes having a first polarity, each having at least two electrically conductive tabs disposed on at least one first edge and at least one second edge. Further, two negative electrodes having a second polarity each having at least two electrically conductive tabs disposed on at least one first edge and at least one second edge. At least one of the two positive electrodes or negative electrodes are distinct from one another. The electrically conductive tabs are substantially aligned in the electrochemical cell to respectively define a plurality of positive electrical connectors and a plurality of negative electrical connectors to reduce current density during high power charging and discharging.

公开(公告)号：US20250158039A1

公开(公告)日：2025-05-15

申请号：US18915027

申请日：2024-10-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Meiyuan WU ,  Yan WU ,  Jingyuan LIU ,  Haijing LIU

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/525 ,  H01M4/62 ,  H01M10/42

Abstract: A cathode electrode includes a cathode current collector and a cathode active material layer comprising a plurality of cathode active material particles including nickel and a plurality of nano-particles that are mechanically inlaid on outer surfaces of the plurality of cathode active material particles to form a plurality of inlaid cathode active material particles.

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：US20240204192A1

公开(公告)日：2024-06-20

申请号：US18131187

申请日：2023-04-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Haijing LIU ,  Mengyan HOU ,  Si CHEN ,  Zhixin XU ,  Jun YANG

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38

CPC classification number: H01M4/622 ,  H01M4/0404 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386

Abstract: An electrode for an electrochemical cell includes a silicon-containing electroactive material that includes a plurality of silicon-containing electroactive material particles and a polymeric network that forms polymeric cages around each of the silicon-containing electroactive material particles of the plurality. The polymeric cages include polyacrylic acid (PAA), lithiated polyacrylic acid (PAALi), or a combination of polyacrylic acid (PAA) and lithiated polyacrylic acid (PAALi) covalently bonded with poly(2-hydroxyethyl acrylate) (PHEA). The polymeric network has a mass ratio of the polyacrylic acid (PAA), the lithiated polyacrylic acid (PAALi), or the combination of the polyacrylic acid (PAA) and the lithiated polyacrylic acid (PAALi) to the poly(2-hydroxyethyl acrylate) (PHEA) of greater than or equal to about 0.5 to less than or equal to about 10.

公开(公告)号：US20240079544A1

公开(公告)日：2024-03-07

申请号：US17961792

申请日：2022-10-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Meiyuan WU ,  Yong LU ,  Haijing LIU ,  Mark W. VERBRUGGE

IPC: H01M4/04 ,  H01M10/04

CPC classification number: H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M10/0422 ,  H01M2010/4292

Abstract: A method for fabricating a dual-layer capacitive cabode electrode includes fabricating a first film including capacitive active material; fabricating a second film including cathode active material; hot jointing the first film and the second film to create a cabode film; and laminating the cabode film onto opposite sides of a current collector using conductive adhesive.