公开(公告)号：US20250070327A1

公开(公告)日：2025-02-27

申请号：US18948275

申请日：2024-11-14

Applicant: Contemporary Amperex Technology (Hong Kong) Limited

Inventor： Dongsheng Sun ,  Qingkui Chi ,  Zhisheng Chai ,  Haizu Jin

IPC: H01M50/107 ,  B60L50/64 ,  H01M50/152 ,  H01M50/179 ,  H01M50/548

Abstract: This application provides a shell, a battery cell, a battery, and an electric device, and relates to the technical field of batteries. The shell includes a bottom wall and a side wall. The side wall encloses an outer periphery of the bottom wall. An outer surface of the bottom wall and an outer surface of the side wall are connected by a first rounding surface, a thickness of the bottom wall is a, and a radius of the first rounding surface is R1 that satisfies: R1/a≤10. In this way, a size of a transition surface between an inner surface of the bottom wall and an inner surface of the side wall can be within a reasonable range, so that a size of space of a corner between the bottom wall and the side wall is within a reasonable range, thereby increasing energy density of the battery cell.

公开(公告)号：US20240413501A1

公开(公告)日：2024-12-12

申请号：US18646652

申请日：2024-04-25

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sung Gwi KO ,  Gun Gue PARK ,  Gwan Hyeon YU ,  Woo Tae JUN ,  Yoon Sun YOO ,  Myung Seob KIM ,  Hyun Ki JUNG

IPC: H01M50/567 ,  H01M10/04 ,  H01M50/107 ,  H01M50/152 ,  H01M50/167 ,  H01M50/179 ,  H01M50/533 ,  H01M50/559 ,  H01M50/586 ,  H01M50/59

Abstract: A cylindrical secondary battery includes: an electrode assembly; a cylindrical can accommodating the electrode assembly and having a terminal hole at a first end; and a terminal portion coupled to the first end of the can and electrically connected to the electrode assembly, and the can further includes a coupling groove and a coupling protrusion adjacent to the terminal hole on a portion through which the terminal hole passes. In the cylindrical secondary battery according to embodiments of the present disclosure, a sealing force of the cylindrical secondary battery may be increased by providing a groove and a protrusion in the can that is a region to which a rivet terminal is coupled.

公开(公告)号：US20240304912A1

公开(公告)日：2024-09-12

申请号：US18003331

申请日：2022-10-14

Applicant: EVE POWER CO., LTD.

Inventor： Liming HUANG ,  Liangliang YUE ,  Min CHEN

IPC: H01M50/179 ,  H01M50/107 ,  H01M50/131 ,  H01M50/167 ,  H01M50/188 ,  H01M50/342 ,  H01M50/559

CPC classification number: H01M50/179 ,  H01M50/107 ,  H01M50/131 ,  H01M50/167 ,  H01M50/188 ,  H01M50/559 ,  H01M50/342

Abstract: A battery is provided. The battery includes a housing, a jellyroll, a first current collector plate, a second current collector plate, an output terminal, and a cover board. A top wall of the housing is provided with a through hole, and a bottom of the housing is provided with an open end. A first tab and a second tab are provided on ends of the jellyroll respectively in an axial direction of the jellyroll. The first tab is connected to the first current collector plate, and the second tab is connected to the housing via the second current collector plate. The output terminal is sealed in the through hole and connected to the first current collector plate. The cover board is sealed and insulated at the open end of the bottom of the housing.

公开(公告)号：US20240258619A1

公开(公告)日：2024-08-01

申请号：US18290462

申请日：2022-10-21

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Jae-Won LIM ,  Su-Ji CHOI

IPC: H01M50/179 ,  H01M50/107 ,  H01M50/14 ,  H01M50/152 ,  H01M50/213 ,  H01M50/503 ,  H01M50/538

CPC classification number: H01M50/179 ,  H01M50/107 ,  H01M50/14 ,  H01M50/152 ,  H01M50/503 ,  H01M50/538 ,  H01M50/213 ,  H01M2220/20

Abstract: A cylindrical battery includes an electrode assembly; a battery housing configured to accommodate the electrode assembly through an open portion; a first current collecting plate having a support portion disposed on the electrode assembly, at least one first tab coupling portion extending from the support portion, and at least one first housing coupling portion extending from an end of the first tab coupling portion, the first current collecting plate being located within the battery housing; a second current collecting plate having a rim portion disposed on the electrode assembly, a second tab coupling portion extending inwardly from the rim portion, and a terminal coupling portion spaced apart from the second tab coupling portion; a cap plate configured to seal the open portion of the battery housing; and a battery terminal coupled with the terminal coupling portion.

公开(公告)号：US20240250354A1

公开(公告)日：2024-07-25

申请号：US18564133

申请日：2022-05-13

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Franz FUCHS ,  Kevin GALLAGHER ,  Martin HILLER ,  Frederik MORGENSTERN ,  Seokyoon YOO

IPC: H01M50/179 ,  H01M50/107 ,  H01M50/152 ,  H01M50/186 ,  H01M50/30 ,  H01M50/531 ,  H01M50/55 ,  H01M50/559 ,  H01M50/627

CPC classification number: H01M50/179 ,  H01M50/107 ,  H01M50/152 ,  H01M50/186 ,  H01M50/30 ,  H01M50/531 ,  H01M50/55 ,  H01M50/559 ,  H01M50/627

Abstract: A battery cell is provided. The battery cell includes an electrode of a first electrical polarity and an electrode of a second electrical polarity opposite to the first polarity, the electrodes of different polarities are separated by a separator; a first electrically conductive contact element which is electrically connected to the electrode of the first polarity and can be contacted as a first terminal of the battery cell from outside the cell housing; a second electrically conductive contact element which is connected to the electrode of the second polarity and can be contacted as a second terminal of the battery cell from outside the cell housing; and the first and the second electrically conductive contact element are electrically insulated from each other and, on a same first end wall of the electrically conductive hollow cylinder, can each be contacted as a respective terminal from outside the cell housing.

公开(公告)号：US20240204313A1

公开(公告)日：2024-06-20

申请号：US18288695

申请日：2023-01-31

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Kwang Su HWANGBO ,  Do Gyun KIM ,  Min Ki JO ,  Bo Hyun KANG

IPC: H01M50/179 ,  H01M50/107 ,  H01M50/117 ,  H01M50/121 ,  H01M50/124 ,  H01M50/152 ,  H01M50/184 ,  H01M50/186 ,  H01M50/342 ,  H01M50/533 ,  H01M50/559 ,  H01M50/567

CPC classification number: H01M50/179 ,  H01M50/107 ,  H01M50/117 ,  H01M50/121 ,  H01M50/1243 ,  H01M50/152 ,  H01M50/184 ,  H01M50/186 ,  H01M50/3425 ,  H01M50/533 ,  H01M50/559 ,  H01M50/567

Abstract: A cylindrical secondary battery includes an electrode assembly including a first electrode tab and a second electrode tab, a battery can configured to accommodate the electrode assembly therein, the battery can having an opening, the battery can being electrically connected to the electrode assembly, a through terminal extending through one surface of the battery can, the through terminal being electrically connected to the electrode assembly, a first current collecting plate having a first surface coupled to the first electrode tab and a second surface coupled to the through terminal, an insulator interposed between the first current collecting plate and the battery can, and a cap plate covering the opening of the battery can. An insulating coating layer is provided along an inner circumferential surface of a sidewall of the battery can facing a side portion of the first electrode tab and a side portion of the first current collecting plate.

公开(公告)号：US20240186587A1

公开(公告)日：2024-06-06

申请号：US18481081

申请日：2023-10-04

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyun Ki JUNG

IPC: H01M10/0587 ,  H01M4/13 ,  H01M4/36 ,  H01M50/107 ,  H01M50/152 ,  H01M50/179 ,  H01M50/559

CPC classification number: H01M10/0587 ,  H01M4/13 ,  H01M4/366 ,  H01M50/107 ,  H01M50/152 ,  H01M50/179 ,  H01M50/559 ,  H01M2004/027

Abstract: A cylindrical secondary battery includes: an electrode assembly including a positive electrode plate, a separator, and a negative electrode plate; a case accommodating the electrode assembly and electrically connected to the negative electrode plate; a rivet terminal penetrating a lower surface of the case and electrically connected to the positive electrode plate; and a cap plate sealing an upper portion of the case, wherein the negative electrode plate includes a negative electrode current collector having a first surface and a second surface, a first negative electrode active material layer coated with a negative electrode active material on the first surface, a second negative electrode active material layer coated with the negative electrode active material on the second surface, and a negative electrode uncoated portion, and a length of the first negative electrode active material layer is different from that of the second negative electrode active material layer.

公开(公告)号：US20240178493A1

公开(公告)日：2024-05-30

申请号：US18428650

申请日：2024-01-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Siying HUANG ,  Fenggang ZHAO ,  Xueqi ZHONG ,  Xing LI ,  Shaojun NIU ,  Wenqi ZHU

IPC: H01M50/188 ,  H01M50/107 ,  H01M50/179 ,  H01M50/184 ,  H01M50/213 ,  H01M50/249 ,  H01M50/528 ,  H01M50/531

CPC classification number: H01M50/188 ,  H01M50/107 ,  H01M50/179 ,  H01M50/184 ,  H01M50/213 ,  H01M50/249 ,  H01M50/528 ,  H01M50/531 ,  H01M2220/20

Abstract: A battery cell includes a housing, an end cap, an electrode terminal, an electrode assembly, and an insulating member. The housing has an opening. The end cap is provided for covering the opening. The electrode terminal is in insulated connection with the end cap. The electrode assembly is housed within the housing and includes a main body and first and second tabs. The first and second tab have different polarities and are disposed on a same end of the main body facing the end cap. One of the first and second tabs is provided for electrically connecting the end cap, and the other one is provided for electrically connecting the electrode terminal. The insulating member is at least partially located between the first tab and the second tab, and abuts against the main body along a thickness direction of the end cap.

公开(公告)号：US20240120623A1

公开(公告)日：2024-04-11

申请号：US18470883

申请日：2023-09-20

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sunggwi KO ,  Jeongchull AHN ,  Gungue PARK

IPC: H01M50/533 ,  H01M10/0587 ,  H01M50/179 ,  H01M50/184 ,  H01M50/342

CPC classification number: H01M50/533 ,  H01M10/0587 ,  H01M50/179 ,  H01M50/184 ,  H01M50/3425

Abstract: A rechargeable battery includes an electrode assembly having a first electrode, a separator, and a second electrode; a case accommodating the electrode assembly; an electrode terminal; a first current collecting plate connecting the first electrode to the electrode terminal; a vent plate; a second current collecting plate connecting the second electrode to a beading portion of the case at an inner side of the vent plate; and a gasket between the second collecting plate and the vent plate and between the second collecting plate. The second current collecting plate includes a base portion on the second electrode, a bottom welding portion extending in a radial direction from the base portion and welded to the second electrode, and a wing welding portion spaced apart from the bottom welding portion and connected to the base portion by an elastic portion and welded to the beading portion.

公开(公告)号：US20240120609A1

公开(公告)日：2024-04-11

申请号：US18447080

申请日：2023-08-09

Applicant: Samsung SDI Co., Ltd.

Inventor： Sung Gwi KO ,  Jeong Chull AHN ,  Gun Gue PARK

IPC: H01M50/342 ,  H01M50/107 ,  H01M50/152 ,  H01M50/159 ,  H01M50/167 ,  H01M50/179 ,  H01M50/188 ,  H01M50/533

CPC classification number: H01M50/3425 ,  H01M50/107 ,  H01M50/152 ,  H01M50/159 ,  H01M50/167 ,  H01M50/179 ,  H01M50/188 ,  H01M50/533 ,  H01M2200/20

Abstract: A cylindrical secondary battery includes: an electrode assembly including a first electrode plate, a separator, and a second electrode plate; a case accommodating the electrode assembly and electrically connected to the second electrode plate; a terminal passing through a lower surface of the case and electrically connected to the first electrode plate; and a cap plate sealing an upper end portion of the case and having a vent. The vent is a thinner portion of the cap plate than other regions thereof and has a central notch having a ring shape and being at a central portion of the cap plate and an inner peripheral notch having a line shape extending from the central notch toward an edge of the cap plate.