公开(公告)号：US12107220B2

公开(公告)日：2024-10-01

申请号：US18626867

申请日：2024-04-04

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

发明人： Kefei Wang ,  Qiao Zeng ,  Liangzhen Xiao ,  Fei Wu

IPC分类号： H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

CPC分类号： H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0034 ,  H01M2300/0037

摘要： An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %≤(X+Y)≤about 8 wt %, about 0.1≤(X/Y)≤about 6, about 30 wt %≤Z≤about 50 wt %, and about 0.01≤(Y/Z)≤about 0.3; wherein the dinitrile compound is one or more compounds selected from adiponitrile, 1,4-dicyano-2-butene, and ethylene glycol bis(2-cyanoethyl) ether; and the trinitrile compound is one or more compounds selected from 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile; 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile; 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane; 1,1,1-tris(cyanoethoxymethylene)ethane; 1,1,1-tris(cyanoethoxymethylene)propane; 3-methyl-1,3,5-tris(cyanoethoxy)pentane; 1,2,7-tris(cyanoethoxy)heptane; 1,2,6-tris(cyanoethoxy)hexane; 1,2,5-tris(cyanoethoxy)pentane; and any combination thereof.

公开(公告)号：US20240304808A1

公开(公告)日：2024-09-12

申请号：US18669462

申请日：2024-05-20

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Xiang ZHOU ,  Yao JIANG ,  Jiang LIU ,  Baiqing LI

IPC分类号： H01M4/58 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/64 ,  H01M10/0525

CPC分类号： H01M4/5825 ,  H01M4/364 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/582 ,  H01M4/625 ,  H01M2004/021 ,  H01M2004/028 ,  H01M4/64 ,  H01M10/0525

摘要： A positive electrode sheet, a secondary battery, a battery module, a battery pack and an electrical apparatus are described. The positive electrode sheet includes a positive electrode current collector and a positive electrode film layer arranged on at least one surface of the positive electrode current collector and having a single-layer or multi-layer structure. When the positive electrode film layer is of the single-layer structure, at least one positive electrode film layer comprises both a first positive electrode active material and a second positive electrode active material with a chemical formula of LiaAxMn1-yRyP1-zCzO4-nDn; and/or, when the positive electrode film layer is of the multi-layer structure, at least one layer of the at least one positive electrode film layer includes both a first and second positive electrode active material. The secondary battery made of the positive electrode sheet has high energy density and high battery cell rate performance.

公开(公告)号：US12068446B2

公开(公告)日：2024-08-20

申请号：US17553071

申请日：2021-12-16

申请人： JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED

发明人： Kun Fang

IPC分类号： H01M10/04 ,  H01M4/04 ,  H01M4/64 ,  H01M10/625 ,  H01M50/543

CPC分类号： H01M10/0422 ,  H01M4/04 ,  H01M4/64 ,  H01M10/625 ,  H01M50/543

摘要： Disclosed is a battery cell, a battery, an electric apparatus, and a manufacturing method of the battery, belonging to the technical field of batteries. The battery includes an electrode assembly, an electrode terminal and a current collector, the current collector is configured to connect the electrode assembly and the electrode terminal; where the current collector and the electrode terminal are connected through a welding portion; and the welding portion is exposed at an external peripheral surface of the current collector and/or an external peripheral surface of the electrode terminal. The battery cell, the battery, the electric apparatus, and the manufacturing method of the battery are capable of ensuring the safety of the battery.

公开(公告)号：US12062784B2

公开(公告)日：2024-08-13

申请号：US17361427

申请日：2021-06-29

申请人： SK On Co., Ltd.

发明人： Hyo Mi Kim ,  Yong Seok Lee

IPC分类号： H01M4/38 ,  H01M4/58 ,  H01M4/583 ,  H01M4/587 ,  H01M4/62 ,  H01M4/64 ,  H01M10/02 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/386 ,  H01M4/583 ,  H01M4/587 ,  H01M4/625 ,  H01M4/64 ,  H01M10/02 ,  H01M10/0525 ,  H01M2004/027

摘要： Provided are a negative electrode for a lithium secondary negative electrode battery including: a current collector; a first negative electrode active material layer disposed on the current collector and including a silicon-based active material, a first graphite-based active material, and a linear conductive material; and a second negative electrode active material layer disposed on the first negative electrode active material layer and including a second graphite-based active material. The first graphite-based active material has a carbon coating layer on at least a part of a surface. Also provided is a lithium secondary battery including the negative electrode.

公开(公告)号：US12034126B2

公开(公告)日：2024-07-09

申请号：US18339868

申请日：2023-06-22

申请人： Sakuu Corporation

发明人： Steven Zhichao Shi ,  Philip Eugene Rogren

IPC分类号： H01M4/64 ,  B29C64/106 ,  B33Y80/00 ,  H01M4/04 ,  H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/0585 ,  H01M50/117 ,  H01M50/183 ,  H01M50/30 ,  H01M4/02 ,  H01M50/112

CPC分类号： H01M10/0585 ,  B29C64/106 ,  B33Y80/00 ,  H01M4/0402 ,  H01M4/0416 ,  H01M4/0471 ,  H01M4/13 ,  H01M4/139 ,  H01M4/62 ,  H01M4/624 ,  H01M4/625 ,  H01M4/626 ,  H01M4/64 ,  H01M4/661 ,  H01M4/663 ,  H01M4/664 ,  H01M4/666 ,  H01M10/052 ,  H01M10/0562 ,  H01M50/117 ,  H01M50/183 ,  H01M50/30 ,  H01M50/394 ,  H01M2004/021 ,  H01M2004/024 ,  H01M4/043 ,  H01M50/112 ,  H01M2300/0068

摘要： An electrochemical cell is provided, which includes a cathode comprising a three dimensional (3D) porous cathode structure, an anode, an electrolyte separator, comprised of a ceramic material, located between the cathode and the anode, and a cathode current collector, wherein the cathode is located between the cathode current collector and the electrolyte separator. The 3D porous cathode structure includes ionically conducting electrolyte strands extending through the cathode from the cathode current collector to the electrolyte separator, pores extending through the cathode from the cathode current collector to the electrolyte separator, and an electronically conducting network extending on sidewall surfaces of the pores from the cathode current collector to the electrolyte separator.

公开(公告)号：US12034113B2

公开(公告)日：2024-07-09

申请号：US16909645

申请日：2020-06-23

申请人： TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC. ,  UNIVERSITY OF MARYLAND, COLLEGE PARK

发明人： Yifei Mo ,  Yunsheng Liu ,  Chen Ling

IPC分类号： H01M10/0562 ,  H01M4/04 ,  H01M4/485 ,  H01M4/505 ,  H01M4/64 ,  H01M10/0525

CPC分类号： H01M10/0562 ,  H01M4/0404 ,  H01M4/485 ,  H01M4/505 ,  H01M4/64 ,  H01M10/0525 ,  H01M2300/0065

摘要： Solid-state lithium ion electrolytes of lithium zinc chloride derivative compounds having a crystal morphology in the Pmn21 space group are provided as materials for conducting lithium ions. An activation energy of the lithium aluminum chloride derivative compounds is from 0.15 to 0.40 eV and conductivities are from 0.01 to 15 mS/cm at 300 K. Compounds of specific formulae are provided and methods to alter the materials with inclusion of aliovalent ions shown. Lithium batteries containing the composite lithium ion electrolytes and electrodes containing the lithium aluminum chloride derivative compounds are also provided.

公开(公告)号：US12027694B2

公开(公告)日：2024-07-02

申请号：US17056228

申请日：2019-04-26

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Takamasa Tamura ,  Nobuhiro Sakitani ,  Takaharu Morikawa

IPC分类号： H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M4/583 ,  H01M4/587 ,  H01M4/64 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/02

CPC分类号： H01M4/364 ,  H01M4/386 ,  H01M4/583 ,  H01M4/587 ,  H01M4/64 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2004/027

摘要： A nonaqueous electrolyte secondary battery according to an embodiment includes a spirally wound electrode body in which a positive electrode and a negative electrode are spirally wound with a separator interposed therebetween. The negative electrode includes a negative electrode current collector, a first negative electrode mixture layer disposed on a first surface of the negative electrode current collector, and a second negative electrode mixture layer disposed on a second surface of the negative electrode current collector. The first surface and the second surface face outward and inward of the electrode body, respectively. At least the first negative electrode mixture layer includes a Si active material. The content of the Si active material in terms of Si in the second negative electrode mixture layer is lower than the content of the Si active material in terms of Si in the first negative electrode mixture layer.

公开(公告)号：US20240189948A1

公开(公告)日：2024-06-13

申请号：US18586252

申请日：2024-02-23

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Takahiro SAKURAI

IPC分类号： B23K26/38 ,  B23K26/06 ,  B23K26/08 ,  B23K26/082 ,  B23K26/40 ,  B23K26/402 ,  B23K101/36 ,  B23K103/16 ,  H01M4/36 ,  H01M4/64 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/406 ,  H01M50/46 ,  H01M50/463

CPC分类号： B23K26/38 ,  B23K26/06 ,  B23K26/082 ,  B23K26/0838 ,  B23K26/40 ,  B23K26/402 ,  H01M4/36 ,  H01M4/64 ,  H01M10/04 ,  H01M10/0413 ,  H01M10/0585 ,  H01M50/406 ,  H01M50/46 ,  H01M50/463 ,  B23K2101/36 ,  B23K2103/166 ,  B23K2103/172 ,  H01M10/049 ,  H01M10/0525

摘要： Provided is an electrode sheet manufacturing method including preparing a sheet stack including an electrode composite material layer and a separator provided on the electrode composite material layer, irradiating the separator of the sheet stack with a first laser beam having a wavelength to be absorbed by the separator, and moving an irradiation position of the first laser beam relative to the sheet stack. The method further includes irradiating the sheet stack having been irradiated with the first laser beam with a second laser beam having a wavelength to be absorbed by the electrode composite material layer, and moving an irradiation position of the second laser beam relative to the sheet stack, wherein the irradiation position of the second laser beam moves so as to follow a track of the irradiation position of the first laser beam.

公开(公告)号：US20240088344A1

公开(公告)日：2024-03-14

申请号：US18492441

申请日：2023-10-23

申请人： DEMARAY, LLC

发明人： R. Ernest DEMARAY ,  James KASCHMITTER ,  Pavel KHOKHLOV

IPC分类号： H01M4/04 ,  C01G23/00 ,  H01M4/13 ,  H01M4/139 ,  H01M4/36 ,  H01M4/64 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0585 ,  H01M10/42

CPC分类号： H01M4/0423 ,  C01G23/00 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/139 ,  H01M4/366 ,  H01M4/64 ,  H01M4/667 ,  H01M10/052 ,  H01M10/0585 ,  H01M10/4235 ,  H01M10/0436

摘要： Embodiments of the present invention are in the field of materials, apparatus, process, methods, and designs for manufacture of a thin film energy storage devices with a capacity greater then 1 mA-hr-cm2 including thin film Lithium metal and Li+ ion batteries and capacitors having high energy density and high cycle life due to the incorporation of at least one vacuum thin film with respect to protection and electrical conductivity of the electrodes, and at least one vacuum thin film electrolyte for electrical insulation of the electrodes and ion conduction after assembly for low self discharge and high cycle life battery cells.

公开(公告)号：US11929503B2

公开(公告)日：2024-03-12

申请号：US17400180

申请日：2021-08-12

申请人： Prime Planet Energy & Solutions, Inc.

发明人： Yuji Yamamoto

IPC分类号： H01M4/583 ,  H01M4/36 ,  H01M4/64 ,  H01M10/02 ,  H01M4/02

CPC分类号： H01M4/583 ,  H01M4/366 ,  H01M4/64 ,  H01M10/02 ,  H01M2004/028

摘要： Provided is a positive electrode for a secondary battery in which carbon nanotubes are used, of which an initial resistance is small, and that suppresses an increase in resistance when charging and discharging are repeated. The positive electrode for a secondary battery disclosed herein includes a positive-electrode current collector and a positive-electrode active material layer provided on the positive-electrode current collector. The positive-electrode active material layer contains a positive-electrode active material and carbon nanotubes, and substantially does not contain a resin binder. The positive-electrode active material layer includes a layer-like region that is in contact with the positive-electrode current collector, and a region other than the layer-like region. Both of the layer-like region and the region other than the layer-like region contain carbon nanotubes. A content of carbon nanotubes in the layer-like region is larger than a content of carbon nanotubes in the region other than the layer-like region.