公开(公告)号：US20240222599A1

公开(公告)日：2024-07-04

申请号：US18403867

申请日：2024-01-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Si CHEN ,  Qili Su ,  Dewen Kong ,  Haijing Liu ,  Mark W. Verbrugge

IPC: H01M4/139 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/139 ,  H01M4/366 ,  H01M4/626 ,  H01M10/0525 ,  H01M2220/20

Abstract: A battery cell includes a cathode electrode comprising a cathode coating arranged on a cathode current collector and a separator. A dual function interlayer comprising capacitor material and lithium-ion source material is arranged one of between the cathode coating and the cathode current collector and between the cathode coating and the separator. An anode electrode is arranged adjacent to the separator and comprising an anode coating arranged on an anode current collector.

公开(公告)号：US12024059B2

公开(公告)日：2024-07-02

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: G06F17/00 ,  B60L58/13 ,  B60L58/26 ,  B60W20/20 ,  G01C21/34

CPC classification number: B60L58/26 ,  B60L58/13 ,  B60W20/20 ,  G01C21/3469

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：US20240154126A1

公开(公告)日：2024-05-09

申请号：US18361968

申请日：2023-07-31

Applicant: GM Global Technology Operations LLC

Inventor： Yong LU ,  Zhe Li ,  Qili Su ,  Haijing Liu

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/139 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585

CPC classification number: H01M4/623 ,  H01M4/0435 ,  H01M4/139 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585 ,  H01M2004/029

Abstract: A bipolar battery cell includes a bipolar electrode including a bipolar current collector and a cathode electrode arranged on one side of the bipolar current collector. The cathode electrode includes cathode active material for exchanging lithium ions, a first solid electrolyte, and first polytetrafluoroethylene (PTFE) fibrils. An anode electrode is arranged on an opposite side of the bipolar current collector, wherein the anode electrode includes anode active material for exchanging lithium ions, a second solid electrolyte, and second PTFE fibrils.

公开(公告)号：US11936030B2

公开(公告)日：2024-03-19

申请号：US17539811

申请日：2021-12-01

Applicant: GM Global Technology Operations LLC

Inventor： Dewen Kong ,  Xiaochao Que ,  Meiyuan Wu ,  Haijing Liu ,  Xiaosong Huang ,  Mark W. Verbrugge

IPC: H01M4/04 ,  H01M4/1397 ,  H01M4/30 ,  H01M10/058 ,  H01M10/0525

CPC classification number: H01M4/0435 ,  H01M4/0404 ,  H01M4/1397 ,  H01M4/30 ,  H01M10/058 ,  H01M10/0525

Abstract: A method of manufacturing an electrode for an electrochemical cell includes providing an admixture including an electroactive material, a binder, and a solvent. The method further includes rolling the admixture to form a sheet and forming a multi-layer stack from the sheet. The method further includes forming an electrode film precursor by performing a plurality of sequential rollings, each including rolling the stack through a first gap. The plurality of sequential rollings includes first and second rollings. In the first rolling, the stack is in a first orientation. In the second rolling, the stack is in a second orientation different from the first orientation. The method further includes forming an electrode film by rolling the electrode film precursor through a second gap less than or equal to the first gap. The method further includes drying the electrode film to remove at least a portion of the solvent.

公开(公告)号：US20240072390A1

公开(公告)日：2024-02-29

申请号：US18123008

申请日：2023-03-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jingyuan LIU ,  Sherman H. Zeng ,  Zhe Li ,  Qili Su ,  Haijing Liu

IPC: H01M50/536 ,  H01M50/54 ,  H01M50/548

CPC classification number: H01M50/536 ,  H01M50/54 ,  H01M50/548

Abstract: A bipolar battery cell includes a stack including N current collectors, M anode electrodes, S separators, and C cathode electrodes, where N, M, S and C are integers greater than one. A first positioning member is arranged on one side of the stack and includes a first planar portion and a first slot in the first planar portion. A first one of the C current collectors extends through the first slot in the first planar portion and is folded. The first positioning member further includes a first rail portion and a second rail portion. The first rail portion and the second rail portion extend from the first planar portion. A first external tab is arranged between the first rail portion and the second rail portion and connected to the first one of the C current collectors.

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.

公开(公告)号：US20230290922A1

公开(公告)日：2023-09-14

申请号：US17737089

申请日：2022-05-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong Lu ,  Zhe Li ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/04 ,  H01M4/36 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0562

CPC classification number: H01M4/0404 ,  H01M4/366 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/021

Abstract: A battery system includes a battery cell, which includes an anode including a first current collector and an anode layer disposed on the first collector and including an anode active material. The cell includes a cathode including a second current collector and a cathode layer disposed on the second collector and including a cathode active material. The cell includes a solid-state electrolyte including one of a reduction tolerable solid electrolyte disposed in contact with the anode and an oxidation tolerable solid electrolyte disposed in contact with the cathode. The reduction tolerable solid electrolyte is present in an amount of from 0.1 part by weight to 5 parts by weight based upon 100 parts by weight of the anode layer. The oxidation tolerable solid electrolyte is present in an amount of from 1 part by weight to 10 parts by weight based upon 100 parts by weight of the cathode layer.

公开(公告)号：US11651906B2

公开(公告)日：2023-05-16

申请号：US17069932

申请日：2020-10-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili Su ,  Haijing Liu ,  Meiyuan Wu ,  Dewen Kong ,  Mengyan Hou

IPC: H01G11/08 ,  H01G11/32 ,  H01G11/46 ,  H01G11/04

CPC classification number: H01G11/08 ,  H01G11/04 ,  H01G11/32 ,  H01G11/46

Abstract: Hybrid lithium-ion electrochemical cells include a first electrode having a first polarity and a first electroactive material that reversibly cycles lithium ions having a first maximum operational voltage and a second electrode having the first polarity with a second electroactive material having a second maximum operational voltage. A difference between the second and first maximum operational voltages defines a predetermined voltage difference. Also included are at least one third electrode including a third electroactive material that reversibly cycles lithium ions having a second polarity opposite to the first polarity, a separator, and electrolyte. A voltage modification component (e.g., diode) is in electrical communication with the first and the second electrodes. In a first operational state corresponding to charging, the at least one voltage modification component is configured to induce a voltage drop corresponding to the predetermined voltage difference providing high power density and high energy density hybrid lithium-ion electrochemical cells.

公开(公告)号：US11427914B2

公开(公告)日：2022-08-30

申请号：US16783240

申请日：2020-02-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing Liu ,  Zhiqiang Yu ,  Xiaochao Que

IPC: H01M4/66 ,  C23C18/12 ,  H01M4/04 ,  C23C22/00

Abstract: A copper foil, intended for use as a current collector in a lithium-containing electrode for a lithium-based electrochemical cell, is subjected to a series of chemical oxidation and reduction processing steps to form a field of integral copper wires extending outwardly from the surfaces of the current collector (and from the copper content of the foil) to be coated with a resin-bonded porous layer of particles of active electrode material. The copper wires serve to anchor thicker layers of porous electrode material and enhance liquid electrolyte contact with the electrode particles and the current collector to improve the energy output of the cell and its useful life.

公开(公告)号：US11302916B2

公开(公告)日：2022-04-12

申请号：US16491488

申请日：2017-03-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Peng Lu ,  Michael P. Balogh ,  Zhiqiang Yu ,  Haijing Liu

IPC: H01M4/485 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/131

Abstract: An electrolyte can be pretreated by contacting with an oxide species (e.g., SiO2, SiOx, where 1≤x≤2, TiO2). The electrolyte comprises LiPF6 and a carbonate solvent. A reaction occurs to form a pretreated electrolyte comprising a compound selected from the group consisting of: MaPx′OyFz, MaPx′OyFzCnHm, and combinations thereof, where when P in the formula is normalized to 1 so that x′ is equal to about 1, 0