公开(公告)号：US11862762B2

公开(公告)日：2024-01-02

申请号：US18098191

申请日：2023-01-18

Applicant: SANYO Electric Co., Ltd.

Inventor： Kazuhiro Kitaoka ,  Masakazu Yamada ,  Yohei Muroya

IPC: H01M10/0587 ,  H01M10/04 ,  H01M50/528 ,  H01M50/50 ,  H01M50/103 ,  H01M50/209 ,  H01M50/119 ,  H01M50/507 ,  H01M50/533 ,  H01M50/502 ,  H01M50/538 ,  H01M50/116 ,  H01M50/10 ,  H01M50/20

CPC classification number: H01M10/0587 ,  H01M10/0431 ,  H01M50/10 ,  H01M50/103 ,  H01M50/116 ,  H01M50/119 ,  H01M50/20 ,  H01M50/209 ,  H01M50/50 ,  H01M50/502 ,  H01M50/507 ,  H01M50/528 ,  H01M50/533 ,  H01M50/538 ,  H01M2220/20

Abstract: A flat-shaped winding electrode body in which a positive electrode plate and a negative electrode plate are wound with a separator interposed therebetween includes a positive electrode tab portion and a negative electrode tab portion at one end in a direction in which a winding axis of the winding electrode body extends. Two pieces of the flat-shaped winding electrode body are housed in a prismatic outer body so that the winding axis of each piece is disposed in a direction perpendicular to a sealing plate, and the positive electrode tab portion and the negative electrode tab portion are located on one end of the winding electrode body closer to the sealing plate than the other end.

公开(公告)号：US20230420744A1

公开(公告)日：2023-12-28

申请号：US18253378

申请日：2021-11-11

Applicant: Samsung SDI Co., Ltd.

Inventor： Geon Kyu SUNG ,  Dong Jin AN ,  Ho Jae LEE ,  Hyun Ki JUNG ,  Ye Jin CHO ,  Yeon Hwa LEE

IPC: H01M10/0587 ,  H01M50/107 ,  H01M50/152 ,  H01M4/13 ,  H01M50/531 ,  C09J7/30 ,  C09J133/04

CPC classification number: H01M10/0587 ,  H01M50/107 ,  H01M50/152 ,  H01M4/13 ,  H01M50/531 ,  C09J7/30 ,  C09J133/04 ,  C09J2203/33 ,  C09J2433/00

Abstract: A technical problem to be solved according to the present disclosure is to provide a secondary battery capable of minimizing contact resistance between a base finish part of an electrode assembly and a can even when a deviation in the winding radius of the electrode assembly occurs, by positioning a swelling tape inside the electrode assembly. To this end, the present disclosure provides a secondary battery including: a cylindrical can, an electrode assembly having a base finish part electrically contacting the cylindrical can; a cap assembly sealing the electrode assembly by blocking the cylindrical can; and a swelling tape positioned inside the base finish part to press the base finish part into the cylindrical can.

公开(公告)号：US20230420639A1

公开(公告)日：2023-12-28

申请号：US18039475

申请日：2021-10-12

Applicant: JIANGSU ZENERGY BATTERY TECHNOLOGIES CO., LTD.

Inventor： Yanlin HAN ,  Zhexun YU ,  Wujun ZOU ,  Lingming KONG

IPC: H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/133 ,  H01M4/587

CPC classification number: H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/0404 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/133 ,  H01M4/587 ,  H01M2004/028

Abstract: Disclosed are a positive electrode plate, a preparation method therefore and a lithium-ion secondary battery, relating to the technical field of batteries. The positive electrode plate includes a positive electrode current collector and a positive electrode coating layer that is coated on the positive electrode current collector and contains a positive electrode active substance; the positive electrode plate satisfies 0.07

公开(公告)号：US20230411594A1

公开(公告)日：2023-12-21

申请号：US18034722

申请日：2022-10-11

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Jung Geun KWON ,  Ki Hoon PAENG

IPC: H01M4/134 ,  H01M4/38 ,  H01M4/133 ,  H01M4/583 ,  H01M4/36 ,  H01M4/66 ,  H01M10/0587

CPC classification number: H01M4/134 ,  H01M4/386 ,  H01M4/133 ,  H01M4/583 ,  H01M4/364 ,  H01M4/661 ,  H01M10/0587 ,  H01M2004/027

Abstract: An anode for a secondary battery and a jelly-roll type electrode assembly including the anode. The anode includes an anode current collector that satisfies a creep rate condition represented by Formula 1 within a certain range. When the anode is applied to the jelly-roll type electrode assembly, deformation and/or expansion of electrode assembly can be controlled, even if it contains a silicon-containing anode active material because the stress generated from the exterior is significantly low. It is possible to ensure excellent safety because the stress accumulated in the anode current collector is greatly reduced, which lowers the risk of an internal disconnection of the electrode assembly.

公开(公告)号：US11843135B2

公开(公告)日：2023-12-12

申请号：US17678458

申请日：2022-02-23

Applicant: PRIME PLANET ENERGY & SOLUTIONS, INC.

Inventor： Takeru Hara

IPC: H01M50/627 ,  H01M50/131 ,  H01M10/0587

CPC classification number: H01M50/627 ,  H01M10/0587 ,  H01M50/131

Abstract: Provided is a technique capable of improving impregnation efficiency of a nonaqueous electrolyte into an electrode body. A manufacturing method herein disclosed includes producing a negative pressure in an inside of a battery case; introducing a nonaqueous electrolyte into the inside of the battery case; establishing communication between the inside of the battery case and external atmosphere; temporarily sealing a solution introduction port using a first sealing member, impregnating the electrode body with a nonaqueous electrolyte; opening the solution introduction port; and, sealing the solution introduction port using a second sealing member. Herein, the first sealing member includes an air permeable film. Air permeation is enabled between the inside of the battery case after the temporary sealing and external atmosphere. The permeability of a vapor derived from the nonaqueous electrolyte with respect to the film is smaller than the permeability of water vapor.

公开(公告)号：US20230395869A1

公开(公告)日：2023-12-07

申请号：US18446162

申请日：2023-08-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU

IPC: H01M10/0587 ,  H01M10/0585 ,  H01M50/533 ,  H01M50/54

CPC classification number: H01M10/0587 ,  H01M10/0585 ,  H01M50/533 ,  H01M50/54 ,  H01M2220/20

Abstract: An electrode assembly and manufacturing method and device thereof, a battery cell, a battery, and an electric device are provided. The electrode assembly includes: a first electrode sheet and a second electrode sheet of opposite polarities, wherein the first electrode sheet and the second electrode sheet both include a main body and at least one tab group, the first electrode sheet and the second electrode sheet are winded around a winding axis such that their respective main bodies overlap to form a winding body, and after the main bodies have been winded a plurality of electrode sheet layers are formed along a radial direction of the winding main body. The tab group includes a plurality of stacked tabs which protrude from the main body, and at least two adjacent tabs in the tab group are separated by at least one electrode sheet layer of same polarity in the radial direction.

公开(公告)号：US11830972B2

公开(公告)日：2023-11-28

申请号：US17164800

申请日：2021-02-01

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sang-Eun Park ,  Young-Ugk Kim

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M10/052 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/583 ,  H01M50/417 ,  H01M50/434 ,  H01M4/48 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0587 ,  H01M4/02

CPC classification number: H01M10/052 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/386 ,  H01M4/483 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/583 ,  H01M4/623 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0587 ,  H01M50/417 ,  H01M50/434 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0031 ,  H01M2300/0034

Abstract: A negative active material for a rechargeable lithium battery includes a core including a SiO2 matrix and a Si grain, and a coating layer continuously or discontinuously coated on the core. The coating layer includes SiC and C, and the peak area ratio of the SiC (111) plane to the Si (111) plane as measured by X-ray diffraction analysis (XRD) using a CuKα ray ranges from about 0.01 to about 0.5.

公开(公告)号：US20230369656A1

公开(公告)日：2023-11-16

申请号：US18029202

申请日：2021-11-15

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Jin Soo KIM ,  Hyoung Kwon KIM

IPC: H01M10/0587 ,  H01M50/533 ,  H01M50/449 ,  H01M50/469 ,  H01M50/434

CPC classification number: H01M10/0587 ,  H01M50/533 ,  H01M50/449 ,  H01M50/469 ,  H01M50/434

Abstract: An electrode assembly includes a first electrode; a second electrode; a separation membrane interposed between the first electrode and the second electrode, in which the first electrode, the second electrode, and the separation membrane are wound together to form a jelly-roll structure; and an auxiliary separation membrane disposed between the first electrode and the separation membrane in a center of the jelly-roll structure.

公开(公告)号：US11817547B2

公开(公告)日：2023-11-14

申请号：US16584542

申请日：2019-09-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masayoshi Yoshida ,  Oose Okutani ,  Takeshi Enomoto ,  Akira Takano

IPC: H01M10/0525 ,  H01M10/0587 ,  H01M50/538 ,  H01M50/186 ,  H01M50/536 ,  H01M50/179 ,  H01M10/643 ,  H01M50/152 ,  H01M10/28 ,  H01M6/10 ,  H01M50/595 ,  H01M50/474 ,  H01M50/477 ,  H01M50/48 ,  H01M50/528

CPC classification number: H01M10/0525 ,  H01M10/0587 ,  H01M50/186 ,  H01M50/538 ,  H01M6/10 ,  H01M10/286 ,  H01M10/643 ,  H01M50/152 ,  H01M50/179 ,  H01M50/474 ,  H01M50/477 ,  H01M50/48 ,  H01M50/528 ,  H01M50/536 ,  H01M50/595 ,  H01M2006/106

Abstract: A wound-type battery includes a wound electrode group having a first electrode and a second electrode with polarity opposite to the first electrode, an electrolyte, a battery case, a sealing plate that seals an opening of the battery case, an insulating plate that is disposed between the electrode group and the sealing plate and that has a hole, and a first tab that passes through the hole to electrically connect the first electrode and the sealing plate to each other. At least a part of a region of the first tab that extends through the hole to a sealing plate side is covered with a tab tape on a side facing the insulating plate. The tab tape includes at least a first adhesive layer and a second adhesive layer on a side opposite the first adhesive layer and is in contact with the first tab through the first adhesive layer.

公开(公告)号：US20230361429A1

公开(公告)日：2023-11-09

申请号：US18353679

申请日：2023-07-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Suogang GUO ,  Chenghua FU ,  Yonghuang YE ,  Chenchen ZHANG ,  Wen CHANG ,  Chang ZHU

IPC: H01M50/449 ,  H01M50/491 ,  H01M50/466 ,  H01M10/0587

CPC classification number: H01M50/449 ,  H01M50/491 ,  H01M50/466 ,  H01M10/0587 ,  H01M10/0525

Abstract: An electrode assembly includes a first electrode sheet, a second electrode sheet, and a first separator. The first electrode sheet and second electrode sheet are of opposite polarities, the first separator is configured to separate the first electrode sheet and the second electrode sheet. The first electrode sheet, the second electrode sheet, and the first separator are wound in a winding direction. The electrode assembly has a bending region. The bending region is provided with a second separator that is laminated with the first separator and configured to separate the first electrode sheet and the second electrode sheet adjacent to each other. At least part of ions deintercalated from the first electrode sheet are able to pass through the first separator and the second separator and be intercalated in the second electrode sheet.