公开(公告)号：US20230246246A1

公开(公告)日：2023-08-03

申请号：US18159093

申请日：2023-01-25

申请人： Prime Planet Energy & Solutions, Inc.

发明人： Yuko NOWATARI ,  Atsushi OBAYASHI ,  Hideo KUSADA ,  Koji NIHOMMATSU

IPC分类号： H01M10/0587 ,  H01M50/46

CPC分类号： H01M10/0587 ,  H01M50/461

摘要： The disclosed flat-shaped wound electrode assembly includes a negative electrode, a positive electrode, a first separator, and a second separator. They are stacked one on another to arrange the first separator between the negative electrode and the positive electrode, and to arrange the second separator on the outermost surface of the wound electrode assembly. The resultant is wound around a winding axis in a longitudinal direction. On each of both main surfaces of the first separator and both main surfaces of the second separator, an adhesion layer is located in stripe patterns. When viewed from a flat side surface of the wound electrode assembly, in a predetermined direction, an angle of the adhesion layer of the first separator with respective to the winding axis on the main surface and an angle of the adhesion layer of the second separator with respect to the winding axis are different from each other.

公开(公告)号：US20230238655A1

公开(公告)日：2023-07-27

申请号：US18192888

申请日：2023-03-30

申请人： Ningde Amperex Technology Limited

发明人： Liangzhen XIAO ,  Qiao ZENG

IPC分类号： H01M50/46 ,  H01M50/538 ,  H01M50/595

CPC分类号： H01M50/461 ,  H01M50/538 ,  H01M50/595

摘要： A battery includes a negative electrode active material layer, a positive electrode active material layer. The negative electrode active material layer includes a first portion and a second portion including a first surface and a first end. The first surface is connected to the first portion by using a first connection part. A thickness of the second portion decreases from the first connection part to the first end. The positive electrode active material layer includes a third portion and a fourth portion including a second surface and a second end. The first surface is at least partially opposite to the second surface, and the second surface is connected to the third portion by using a second connection part. A thickness of the fourth portion gradually decreases from the second connection part to the second end. The first connection part is located between the second connection part and the second end.

公开(公告)号：US20230231275A1

公开(公告)日：2023-07-20

申请号：US17952045

申请日：2022-09-23

申请人： Samsung SDI Co., Ltd.

发明人： Bum Kuk CHOI

IPC分类号： H01M50/46 ,  H01M10/0587 ,  H01M50/531

CPC分类号： H01M50/461 ,  H01M10/0587 ,  H01M50/531

摘要： A secondary battery includes: an electrode assembly including: a negative electrode plate; a positive electrode plate; and a separator interposed between the negative electrode plate and the positive electrode plate; a bond on one surface of the electrode assembly perpendicular to a surface of the separator to fix the separator; a case accommodating the electrode assembly; a negative electrode lead drawn out from the negative electrode plate; and a positive electrode lead drawn out from the positive electrode plate.

公开(公告)号：US20230231179A1

公开(公告)日：2023-07-20

申请号：US18153907

申请日：2023-01-12

申请人： SAMSUNG SDI CO., LTD.

发明人： Fumiko KIMURA

IPC分类号： H01M10/0525 ,  H01M50/46

CPC分类号： H01M10/0525 ,  H01M50/461 ,  H01M2004/027

摘要： A negative electrode for a rechargeable lithium and a rechargeable lithium battery, and the negative electrode includes a current collector and a negative active material layer positioned on the current collector, wherein the negative active material layer includes a plurality of holes at a hole density of about 90 pt/mm2 or more.

公开(公告)号：US20230198099A1

公开(公告)日：2023-06-22

申请号：US18066425

申请日：2022-12-15

申请人： PRIME PLANET ENERGY & SOLUTIONS, INC.

发明人： Hideo KUSADA ,  Atsushi OBAYASHI ,  Yuko NOWATARI ,  Shinya MIYAZAKI

IPC分类号： H01M50/46 ,  H01M50/417 ,  H01M50/463 ,  H01M50/451

CPC分类号： H01M50/461 ,  H01M50/417 ,  H01M50/463 ,  H01M50/451

摘要： The separator disclosed herein includes a substrate and an adhesive layer. The adhesive layer is partially provided on one side of, or both of two sides of, the substrate. Where an initial thickness of the separator is T0, a thickness of the separator when the separator is impregnated with an electrolyte solution and supplied with a pressure of 1 MPa is T1, a thickness of the separator when, after this, the separator is supplied with a pressure of 2 MPa for 1 hour, and the pressure is decreased to 0.5 MPa, is T2, and a thickness of the separator when, after this, the separator is supplied with a pressure of 4 MPa for 48 hours, is T4, the separator satisfies inequalities (1) through (3): (1) 1≤T1/T0≤1.1; (2) 0.92≤T2/T1≤1; and (3) 0.6≤T4/T1≤0.8.

公开(公告)号：US20230170520A1

公开(公告)日：2023-06-01

申请号：US18070752

申请日：2022-11-29

申请人： PRIME PLANET ENERGY & SOLUTIONS, INC.

发明人： Masao FUKUNAGA

IPC分类号： H01M10/04 ,  H01M50/46 ,  H01M50/103 ,  H01M50/186 ,  H01M50/417 ,  H01M50/491 ,  H01M50/609

CPC分类号： H01M10/0431 ,  H01M50/461 ,  H01M50/103 ,  H01M50/186 ,  H01M50/417 ,  H01M50/491 ,  H01M50/609

摘要： A herein disclosed manufacturing method of a secondary battery is a manufacturing method of a secondary battery that includes a wound electrode assembly and a battery case. The herein disclosed manufacturing method of the secondary battery comprising: an arranging step for arranging the plural wound electrode assemblies inside the battery case; a peeling step for peeling off at least one, among the positive electrode and the negative electrode, and the separator; and a liquid injection step for performing a liquid injection of the electrolyte solution into the battery case. At the peeling step, at least one, among the positive electrode and the negative electrode of each wound electrode assembly, and the separator are peeled off to make a state where a peeled area is formed on each of the plural wound electrode assemblies.

公开(公告)号：US20240322377A1

公开(公告)日：2024-09-26

申请号：US18578816

申请日：2022-07-15

申请人： Teijin Limited

发明人： Rika KURATANI ,  Mai MIURA ,  Satoshi NISHIKAWA

IPC分类号： H01M50/491 ,  H01M10/0525 ,  H01M50/426 ,  H01M50/446 ,  H01M50/457 ,  H01M50/46

CPC分类号： H01M50/491 ,  H01M10/0525 ,  H01M50/426 ,  H01M50/446 ,  H01M50/457 ,  H01M50/461

摘要： Provided is a separator for a non-aqueous secondary battery, the separator contains a porous substrate and an adhesive porous layer that is provided on one side or on both sides of the porous substrate, and that contains a polyvinylidene fluoride type resin and a filler, in which the porous substrate contains a fluorine atom, and when differential scanning calorimetry is performed with all of the polyvinylidene fluoride type resin contained in the adhesive porous layer as a sample, two or more endothermic peaks and/or two or more exothermic peaks are observed.

公开(公告)号：US12062787B2

公开(公告)日：2024-08-13

申请号：US17307661

申请日：2021-05-04

申请人： MURATA MANUFACTURING CO., LTD.

发明人： Keitaro Kitada ,  Futoshi Sato ,  Takaaki Matsui ,  Taichi Kogure ,  Aya Mashiko ,  Yoshifumi Shimizu ,  Kazuki Honda ,  Yuta Hirano ,  Shinji Hatake ,  Naoko Yamakawa ,  Moriaki Okuno ,  Masahiro Miyamoto

IPC分类号： H01M4/525 ,  C07D319/06 ,  C08F214/22 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0587 ,  H01M50/414 ,  H01M50/449 ,  H01M50/46 ,  H01M4/02

CPC分类号： H01M4/525 ,  C07D319/06 ,  C08F214/22 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M4/623 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0587 ,  H01M50/414 ,  H01M50/449 ,  H01M50/461 ,  H01M2004/021 ,  H01M2300/0025

摘要： A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a lithium-cobalt composite oxide having a layered rock-salt crystal structure. The negative electrode includes graphite. An open circuit potential of the negative electrode measured in a full charge state is from 19 mV to 86 mV. A potential variation of the negative electrode is greater than or equal to 1 mV when the secondary battery is discharged from the full charge state by a capacity corresponding to 1% of a maximum discharge capacity. The maximum discharge capacity is obtained when the secondary battery is discharged with a constant current from the full charge state until the closed circuit voltage reaches 3.00 V, following which the secondary battery is discharged with a constant voltage of the closed circuit voltage of 3.00 V for 24 hours.

公开(公告)号：US20240243338A1

公开(公告)日：2024-07-18

申请号：US18620151

申请日：2024-03-28

申请人： Ningde Amperex Technology Limited

发明人： Xuecheng LI ,  Yuanbing ZHANG

IPC分类号： H01M10/04 ,  H01M50/105 ,  H01M50/129 ,  H01M50/46

CPC分类号： H01M10/0431 ,  H01M50/105 ,  H01M50/129 ,  H01M50/461 ,  H01M2220/30

摘要： A battery includes a housing, an electrode assembly, a first bonding part, and a second bonding part. The electrode assembly includes a body portion and a first metal portion. The first metal portion protrudes from the body portion along a first direction. The body portion includes a first protruding portion, a first portion, and a second protruding portion that are connected in sequence. The first portion includes a first surface and a second surface disposed opposite to each other in the second direction. The first protruding portion includes a third surface located on a same side as the first surface and a fourth surface disposed opposite to the third surface. The second protruding portion includes a fifth surface located on the same side as the first surface and a sixth surface disposed opposite to the fifth surface. The first protruding portion includes a seventh surface in the first direction.

公开(公告)号：US20240213482A1

公开(公告)日：2024-06-27

申请号：US18261110

申请日：2022-01-27

申请人： ZEON CORPORATION

发明人： Kazuki ASAI

IPC分类号： H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M10/0525 ,  H01M50/46

CPC分类号： H01M4/623 ,  H01M4/0404 ,  H01M10/0525 ,  H01M50/461 ,  H01M2004/021 ,  H01M2004/028

摘要： A non-aqueous secondary battery includes a positive electrode, a negative electrode, an electrolyte solution, and a separator. The positive electrode includes a current collector and a positive electrode mixed material layer formed on the current collector. The positive electrode mixed material layer contains a positive electrode active material, a conductive material, and a polymer A. The polymer A includes a nitrile group-containing monomer unit and either or both of a conjugated diene monomer unit and an alkylene structural unit. The content of the polymer A in the positive electrode mixed material layer is not less than 0.01 mass % and not more than 8 mass %. The separator includes a separator substrate and an adhesive layer formed on the separator substrate. The adhesive layer contains a polymer B and has a ratio of coverage by the polymer B of not less than 3% and not more than 70%.