公开(公告)号：US20240039119A1

公开(公告)日：2024-02-01

申请号：US17914126

申请日：2021-07-15

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Kyung-Ryun KA ,  Hye-Jin KWON ,  Seung-Hyun LEE ,  Je-An LEE

IPC: H01M50/449 ,  H01M50/446 ,  H01M50/443 ,  H01M50/42 ,  H01M50/491 ,  H01M50/46 ,  H01M10/0585 ,  H01M10/0587

CPC classification number: H01M50/449 ,  H01M50/446 ,  H01M50/443 ,  H01M50/42 ,  H01M50/491 ,  H01M50/461 ,  H01M10/0585 ,  H01M10/0587 ,  H01M10/0525

Abstract: The present disclosure relates to a separator for a secondary battery comprising a porous polymer substrate; a first layer formed on at least one surface of the porous polymer substrate, and comprising inorganic particles and a nonparticulate acrylic polymer having a glass transition temperature of 15° C. or less, wherein the nonparticulate acrylic polymer connects and fixes the inorganic particles; and a second layer formed on an upper surface of the first layer, and comprising a particulate acrylic polymer having a glass transition temperature of 20° C. to 50° C.
The separator for a secondary battery according to the present disclosure has good adhesion with electrode and can solve the resistance problem in the presence of the inorganic particles.

公开(公告)号：US20240039051A1

公开(公告)日：2024-02-01

申请号：US18358943

申请日：2023-07-26

Applicant: Prime Planet Energy & Solutions, Inc.

Inventor： Yuko NOWATARI ,  Kazutaka MITA ,  Hideo KUSADA ,  Koji NIHOMMATSU

IPC: H01M10/0587 ,  H01M50/46

CPC classification number: H01M10/0587 ,  H01M50/461 ,  H01M10/0525

Abstract: Provided is a technique that can obtain a wound electrode body simply and conveniently. One aspect of a battery herein disclosed is provided with a wound electrode body in which a positive electrode and a negative electrode are wound around in a predetermined winding direction around a winding axis via a separator. The battery includes a first separator and a second separator as the separator; the second separator includes a region positioned outward from an winding terminal edge of the first separator; the second separator includes an extending portion extending beyond a winding terminal edge of the first separator in the winding direction; a second adhesive is existed at least on a part of an inner surface of the extending portion; and the extending portion and a region positioned inward from the extending portion in the second separator are bonded via the second adhesive layer.

公开(公告)号：US20240021862A1

公开(公告)日：2024-01-18

申请号：US18252316

申请日：2021-11-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Tetsuya KAKEHATA ,  Tetsuji ISHITANI ,  Shotaro MURATSUBAKI

IPC: H01M10/052 ,  H01M4/525 ,  H01M10/42 ,  H01M10/0587 ,  B60L50/60

CPC classification number: H01M10/052 ,  H01M4/525 ,  H01M10/4235 ,  H01M10/0587 ,  B60L50/66 ,  H01M2004/028

Abstract: A secondary battery stable in a high-potential state and/or a high-temperature state is provided. The secondary battery includes a positive electrode and a negative electrode, and one or both of the positive electrode and the negative electrode contain an active material and a composite compound with a crystal structure. The composite compound has a function of a binder. The composite compound can also be used as an electrolyte. The composite compound with a crystal structure has typically a molecular crystal. The composite compound with a crystal structure can be obtained by mixing a first compound and a second compound while heating is performed at higher than or equal to a temperature at which a mixture of the first compound and the second compound is melted.

公开(公告)号：US20240017947A1

公开(公告)日：2024-01-18

申请号：US18474254

申请日：2023-09-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Linglong Tang ,  Feng Pan ,  Wei Zhang ,  Yuqian Wen

IPC: B65H18/08 ,  B65H23/04 ,  H01M10/04 ,  H01M10/0587

CPC classification number: B65H18/08 ,  B65H23/044 ,  H01M10/0409 ,  H01M10/0431 ,  H01M10/0587 ,  B65H2701/19 ,  B65H2601/24 ,  B65H2555/41

Abstract: Disclosed are a winding apparatus and a winding method, the winding apparatus includes: a winding needle, being configured to wind a winding material; a power supply assembly, being configured to be electrically coupled to the winding needle, so as to form current on an axis of the winding needle; and a magnet supply assembly, being configured to provide a magnetic field to the winding needle, a magnetic field direction intersecting the axis of the winding needle so that the winding needle generates an ampere force for resisting a deformation of the winding needle in the magnetic field when the winding material is wound. By the above method, the present application may reduce the deformation of the winding needle, reduce a defective rate of a winding product formed by the winding of the winding material, and improve quality of the winding product.

公开(公告)号：US11876244B2

公开(公告)日：2024-01-16

申请号：US17227475

申请日：2021-04-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yasuhiko Sakai

IPC: H01M50/30 ,  H01M10/0525 ,  H01M50/209 ,  H01M10/0587

CPC classification number: H01M50/30 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/209

Abstract: A electrode body of a power storage cell is accommodated in an inner space of a housing to form an upper clearance on a side opposite to a bottom surface of the housing and form a side clearance between the electrode body and each of a first side surface and a second side surface of the housing. Gas discharge valves include a first discharge valve provided on the first side surface and a second discharge valve provided on the second side surface. At least a portion of an opening of the first discharge valve is located at a region of the first side surface to which the upper clearance is projected, and at least a portion of an opening of the second discharge valve is located at a region of the second side surface to which the upper clearance is projected.

公开(公告)号：US11876185B2

公开(公告)日：2024-01-16

申请号：US17606942

申请日：2020-08-03

Applicant: LG Energy Solution, Ltd.

Inventor： In Young Cha

IPC: H01M10/0587 ,  H01M10/04 ,  H01M10/44 ,  H01M50/136 ,  H01M50/184 ,  H01M50/171 ,  H01M10/52 ,  H01M50/30 ,  H01M50/636 ,  H01M10/0525

CPC classification number: H01M10/0587 ,  H01M10/049 ,  H01M10/446 ,  H01M10/52 ,  H01M50/136 ,  H01M50/171 ,  H01M50/184 ,  H01M10/0525 ,  H01M50/394 ,  H01M50/636 ,  H01M2200/20

Abstract: A method for manufacturing a secondary battery includes accommodating an electrode assembly in a battery case including an accommodation part and a gas pocket part connected to the accommodation part to collect a gas generated in the accommodation part, performing sealing along an outer circumferential surface of the battery case except for an end of the gas pocket part, injecting an electrolyte into the accommodation part through the end of the gas pocket part, performing double sealing on the end of the gas pocket part so that a first sealing part is formed at a side closer to the accommodation part, and a second sealing part is formed at a side that is farther from the accommodation part, removing a portion, on which the second sealing part is formed, from the battery case, and applying electricity to the electrode assembly to charge the secondary battery.

公开(公告)号：US20240014521A1

公开(公告)日：2024-01-11

申请号：US18035180

申请日：2022-02-18

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Suji CHOI ,  Do Gyun KIM ,  Je Jun LEE ,  Kwang Su HWANG BO ,  Geon Woo MIN ,  Minki JO

IPC: H01M50/538 ,  H01M10/0587 ,  H01M10/04 ,  H01M50/249

CPC classification number: H01M50/538 ,  H01M10/0587 ,  H01M10/0431 ,  H01M50/249 ,  H01M2220/20

Abstract: A secondary battery includes an electrode assembly in which first and second electrodes and a separator provided between the first and second electrodes are wound, the first and second electrodes each including a non-coated portion, exposed to an outside of the separator, and having no active material applied thereto; and a current collecting plate provided at one end of the electrode assembly at which the non-coated portion of the first electrode is exposed, the current collecting plate including a central portion, and a peripheral portion provided around the central portion and configured to adjoin one end of the electrode assembly, in which the peripheral portion includes one or more first through-holes penetrated by at least a part of the non-coated portion of the first electrode. A battery pack having a plurality of the secondary batteries and a vehicle having the battery pack are also provided.

公开(公告)号：US11870040B2

公开(公告)日：2024-01-09

申请号：US17576357

申请日：2022-01-14

Applicant: PRIME PLANET ENERGY & SOLUTIONS, INC.

Inventor： Kentaro Tsukamoto ,  Yoshifumi Magari

IPC: H01M10/0585 ,  H01M50/533 ,  H01M50/54 ,  H01M50/103 ,  H01M4/48 ,  H01M4/66 ,  H01M10/0587

CPC classification number: H01M10/0585 ,  H01M4/48 ,  H01M4/661 ,  H01M10/0587 ,  H01M50/103 ,  H01M50/533 ,  H01M50/54

Abstract: According to the present disclosure, a technique capable of suppressing an internal short circuit caused by a peeled metal piece and obtaining a safer secondary battery is provided. An electrode plate (negative electrode plate) disclosed herein includes a negative electrode core including copper or a copper alloy, a negative electrode active material layer applied to a surface of the negative electrode core, and a negative electrode tab protruding to the outside from one end side in a width direction. In the negative electrode plate, a first region having an oxide film having a thickness of 40 nm to 200 nm is formed in a region of 0.01 mm to 0.2 mm from an outer end side of the negative electrode tab toward the inside in the width direction, and the first region 22t1 extends along the outer end side 22ta of the negative electrode tab 22t. As a result, a metal piece that can be peeled off from the negative electrode tab 22t can be insulated and inactivated in advance, so that an internal short circuit due to the peeled metal piece can be suppressed.

公开(公告)号：US20240006713A1

公开(公告)日：2024-01-04

申请号：US18324233

申请日：2023-05-26

Applicant: Sumitomo Chemical Company, Limited

Inventor： Riku MATSUMINE ,  Yoshinori SATO

IPC: H01M50/417 ,  H01M10/0525 ,  H01M50/42 ,  H01M10/0587

CPC classification number: H01M50/417 ,  H01M10/0525 ,  H01M50/42 ,  H01M10/0587

Abstract: Provided is a laminated separator which makes it possible to reduce occurrence of adhesion of separators. A laminated separator (4a) has a heat-resistant layer (2a, 2b) on one surface or both surfaces of a polyolefin-based base material (1), the laminated separator including a particle layer (3a, 3b) on at least one side of the laminated separator, particles contained in the particle layer containing a thermoplastic resin, an average particle diameter of the particles being not less than 0.1 μm and less than 3.0 μm, and the heat-resistant layer containing an inorganic filler at a proportion of not more than 70% by weight.

公开(公告)号：US11862768B2

公开(公告)日：2024-01-02

申请号：US17547535

申请日：2021-12-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huihui Shangguan ,  Daichun Tang ,  Xinxin Du ,  Ziyu Bai ,  Ruihuan Qin

IPC: H01M10/0587 ,  H01M50/538

CPC classification number: H01M10/0587 ,  H01M50/538 ,  H01M2220/20

Abstract: The embodiments of the present application provide a winding type electrode assembly including a positive electrode plate and a negative electrode plate; the positive electrode plate includes a first positive winding end portion and a positive winding middle section; the negative electrode plate includes a first portion and a second portion; and an active material layer of the negative electrode plate exceeds an active material layer of the positive electrode plate, and a difference between a maximum width of a negative active material layer of the first portion and a minimum width of a positive active material layer of the first positive winding end portion is larger than a difference between a maximum width of a negative active material layer of the second portion and a minimum width of a positive active material layer of the positive winding middle section.