公开(公告)号：US20250149576A1

公开(公告)日：2025-05-08

申请号：US18522539

申请日：2023-11-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xin ZHANG ,  Dewen Kong ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/58 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M4/66 ,  H01M4/74 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M50/417 ,  H01M50/429 ,  H01M50/451 ,  H01M50/491

Abstract: A battery cell includes A anode electrodes including an anode active material layer comprising lithium metal active material and an anode current collector, C cathode electrodes including a cathode active material layer comprising LiFePO4 (LFP) active material and a cathode current collector, and S separators arranged between the A anode electrodes and the C cathode electrodes, where A, C, and S are integers greater than one. The S separators comprise a substrate including a coating layer.

公开(公告)号：US20250149546A1

公开(公告)日：2025-05-08

申请号：US18654585

申请日：2024-05-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Qili Su ,  Yong Lu ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/1395 ,  H01M4/38 ,  H01M10/0562

Abstract: A battery cell includes C cathode electrodes including a cathode active material layer arranged on a cathode current collector, A anode electrodes including an anode active material layer arranged on an anode current collector, and S separators, where A, C and S are integers greater than one. The anode active material layer comprises silicon and a metal that are co-sputtered. The metal is different than the silicon.

公开(公告)号：US12272788B2

公开(公告)日：2025-04-08

申请号：US17542299

申请日：2021-12-03

Applicant: GM Global Technology Operations LLC

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

IPC: H01M10/0565 ,  H01M10/0585 ,  H01M4/02

Abstract: A method for forming a bipolar solid-state battery includes preparing a mixture of gel precursor solution and solid electrolyte. The gel precursor includes a polymer, a first solvent, and a liquid electrolyte. The liquid electrolyte includes a second solvent, a lithium salt, and electrolyte additive. The method includes loading the mixture onto at least one of a first electrode, a second electrode, and a third electrode. Each of the first, second, and third electrodes includes a plurality of solid-state electroactive particles. The method includes removing at least a portion of the first solvent from the mixture to form a gel and positioning one of the first, second, and third electrodes with respect to another of the first, second, and third electrodes. The method includes applying a polymer blocker to a border of the first, second, or third electrodes.

公开(公告)号：US20250062327A1

公开(公告)日：2025-02-20

申请号：US18476826

申请日：2023-09-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili Su ,  Zhe Li ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/583 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/44

Abstract: Lithium-ion batteries are provided that include a columnar silicon anode including a carbon fiber network on exposed surfaces of the columnar silicon anode. The columnar silicon is formed by plasma vapor deposition. Also disclosed are processes for forming the carbon fiber network, which generally includes spraying a dilute carbon fiber precursor solution including carbon nanotubes, an optional polymeric dispersing agent and a solvent, which is then subjected to facile evaporation at an elevated temperature to remove the solvent and form the carbon fiber network. The carbon fiber network is uniformly and multi-directionally provided on the exposed surfaces of the columnar silicon anode. The presence of the carbon fiber network provides high electronic pathways to enhance battery power capability especially at the higher current rates.

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：US20240283009A1

公开(公告)日：2024-08-22

申请号：US18359466

申请日：2023-07-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qili SU ,  Zhe Li ,  Meiyuan Wu ,  Dave G. Rich ,  Yong Lu ,  Haijing Liu ,  Mark W. Verbrugge

IPC: H01M10/0562 ,  H01M4/04 ,  H01M4/62

CPC classification number: H01M10/0562 ,  H01M4/0435 ,  H01M4/623 ,  H01M4/625

Abstract: A method for preparing an electrolyte layer supported by a dry process electrode layer, the method includes providing a sulfide electrolyte layer; providing a first dry process electrode layer; arranging a first side of the sulfide electrolyte layer adjacent to a first side of the first dry process electrode layer; and calendaring the sulfide electrolyte layer and the first dry process electrode layer to reduce a thickness of the sulfide electrolyte layer to a predetermined thickness in a range from approximately 5 micrometers (μm) to approximately 50 μm.

公开(公告)号：US20240272236A1

公开(公告)日：2024-08-15

申请号：US18361288

申请日：2023-07-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong LU ,  Meiyuan Wu ,  Zhe LI ,  Dave G. Rich ,  Haijing Liu

IPC: G01R31/396 ,  G01R31/3835 ,  H01M10/46 ,  H01M10/48 ,  H01M50/296 ,  H01M50/512

CPC classification number: G01R31/396 ,  G01R31/3835 ,  H01M10/46 ,  H01M10/482 ,  H01M50/296 ,  H01M50/512

Abstract: A bipolar battery system includes N battery cells. Each of the N battery cells comprises M cores each comprising a first current collector, cathode active material, a separator, anode active material, and a second current collector, where M is an integer greater than one. The M cores are connected in parallel by connecting the first current collectors of the M cores in each of the N battery cells together and by connecting the second current collectors of the M cores in each of the N battery cells together. N-1 clad plates are arranged between adjacent ones of the N battery cells and the N battery cells are connected in series by the N-1 clad plates. A voltage sensing system connects to the N-1 tabs, a first terminal, and a second terminal and is configured to determine N voltages across the N battery cells, respectively.

公开(公告)号：US11942620B2

公开(公告)日：2024-03-26

申请号：US17543160

申请日：2021-12-06

Applicant: GM Global Technology Operations LLC

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

IPC: H01M4/04

CPC classification number: H01M4/0416 ,  H01M2300/0068

Abstract: The present disclosure relates to a solid-state electrochemical cell having a uniformly distributed solid-state electrolyte and methods of fabrication relating thereto. The method may include forming a plurality of apertures within the one or more solid-state electrodes; impregnating the one or more solid-state electrodes with a solid-state electrolyte precursor solution so as to fill the plurality of apertures and any other void or pores within the one or more electrodes with the solid-state electrolyte precursor solution; and heating the one or more electrodes so as to solidify the solid-state electrolyte precursor solution and to form the distributed solid-state electrolyte.

公开(公告)号：US11411261B2

公开(公告)日：2022-08-09

申请号：US16487914

申请日：2017-03-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhiqiang Yu ,  Haijing Liu ,  Xiaochao Que ,  Dave G. Rich ,  Saad Hasan ,  Meiyuan Wu

IPC: H01M10/615 ,  H01M4/04 ,  H01M4/66 ,  H01M4/75 ,  H01M4/80 ,  H01M10/0587 ,  H01G11/06 ,  H01M10/0525

Abstract: Lithium-based and sodium-based batteries and capacitors using metal foil current collectors, coated with porous layers of particles of active electrode materials for producing an electric current, may adapted to produce heat for enhancing output when the cells are required to periodically operate during low ambient temperatures. A self-heating cell may be placed in heat transfer contact with a working cell that is temporarily in a cold environment. Or one or both of the anode current collector and cathode current collectors of a heating cell may be formed with shaped extended portions, uncoated with electrode materials, through which cell current may be passed for resistance heating of the extended current collector areas. These extended current collector areas may be used to heat the working area of the cell in which they are incorporated, or to contact and heat an adjacent working cell.

公开(公告)号：US20220181635A1

公开(公告)日：2022-06-09

申请号：US17542169

申请日：2021-12-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen Kong ,  Xiaochao Que ,  Meiyuan Wu ,  Haijing Liu

IPC: H01M4/62 ,  H01M4/04

Abstract: An asymmetric hybrid electrode for a capacitor-assisted battery includes a current and first and second electroactive portions. The first electroactive portion is on a first surface of the current collector. The first electroactive portion includes a first battery layer. The first battery layer includes a first battery electroactive material and a first binder. The second electroactive portion is on a second surface of the current collector opposite the first surface. The second electroactive portion includes a second battery layer and a capacitive layer. The second battery layer includes a second battery electroactive material and a second binder. The capacitive layer includes a capacitive electroactive material and a third binder. The first and second electroactive portions are asymmetric. The first and second battery electroactive materials are both positive electroactive materials or both negative electroactive materials. The asymmetric hybrid electrode has a capacitor hybridization ratio of 0.01-1%.