BUTTON CELL
    2.
    发明公开
    BUTTON CELL 审中-实审

    公开(公告)号:EP4350854A2

    公开(公告)日:2024-04-10

    申请号:EP23197370.2

    申请日:2023-09-14

    发明人: Woo, Byongchul

    摘要: A button cell includes: an electrode assembly that includes a first electrode, a second electrode, and a separator disposed between the first electrode and the second electrode; a case that is connected to the first electrode to accommodate the electrode assembly and includes an opening exposing the electrode assembly; a cap plate that is coupled to the case to cover an outer area of the opening and includes a through-hole exposing a central area of the opening; a terminal plate that is connected to the second electrode to be insulated from and bonded to the cap plate and covers the through-hole; a bonding layer that is disposed between the cap plate and the terminal plate and insulates and bonds between the cap plate and the terminal plate; and an insulating structure that is adjacent to the bonding layer and is disposed between the cap plate and an edge of the terminal plate.

    ELECTRICITY STORAGE DEVICE AND METHOD FOR PRODUCING ELECTRICITY STORAGE DEVICE

    公开(公告)号:EP4224602A1

    公开(公告)日:2023-08-09

    申请号:EP21875275.6

    申请日:2021-09-17

    摘要: An electricity storage device to be disclosed includes: an electrode assembly including a first electrode and a second electrode; a can accommodating the electrode assembly and including a bottomed tubular shape with an opening provided at one end; and a sealing material joined to the one end of the can to seal the opening. The sealing material includes a first ring that is conductive, a second ring that is conductive and joined to the first ring, a terminal plate that is conductive provided between the first ring and the second ring, and an insulation ring insulating the first ring and the second ring from the terminal plate. An outer peripheral edge of the terminal plate is held between the first ring and the second ring with the insulation ring being put therebetween.

    SEALING MEMBER AND CYLINDRICAL LITHIUM ION BATTERY

    公开(公告)号:EP4212762A1

    公开(公告)日:2023-07-19

    申请号:EP21866317.7

    申请日:2021-06-14

    摘要: A sealing member that is unlikely to break while an end portion thereof is pressure-bonded is provided.
    The sealing member is one used for a cylindrical lithium-ion battery, wherein the sealing member is used by being interposed between a bottom-closed cylindrical case and a cap, is made of perfluoropolymer, and has dimensions that meet the following relational expressions:
    when an axial distance from a cap upper surface to a leading end portion in a case is defined as HC,
    an axial distance from the cap upper surface to a leading end portion in the sealing member is defined as HG,
    a thickness of the sealing member is defined as TG,
    a value of TG divided by HG is defined as X (=TG/HG), and
    a value of HG divided by HC is defined as Y (=HG/HC), X > 0.800 TG − 0.324 Y − 0.778 TG + 1.670 Y > 0.594 X 2 − 1.176 X + 0.913

    RECHARGEABLE BATTERY
    7.
    发明公开

    公开(公告)号:EP3926743A1

    公开(公告)日:2021-12-22

    申请号:EP21165319.1

    申请日:2021-03-26

    摘要: A rechargeable battery includes: an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode; a case configured to be connected to the first electrode and accommodate the electrode assembly, and including an opening to expose the electrode assembly; a cap plate configured to be coupled to the case to cover an outer area of the opening, and including a through-hole to expose a central area of the opening; a terminal plate configured to cover the through-hole and to be connected to the second electrode; and a thermal-fusion layer configured to be arranged between the cap plate and the terminal plate and to insulation-bond the cap plate and the terminal plate, and the thermal-fusion layer includes a plurality of layers including a thermoplastic resin layer.

    LEAD FILM FOR SECONDARY BATTERY, AND SECONDARY BATTERY COMPRISING SAME

    公开(公告)号:EP4235920A1

    公开(公告)日:2023-08-30

    申请号:EP22876765.3

    申请日:2022-09-23

    摘要: The present disclosure relates to a lead film for a secondary battery including a fire extinguishing agent in which the sealing property of a battery may be maintained and safety may be improved, and a secondary battery including the lead film. A lead film for a secondary battery according to the present disclosure includes a fire extinguishing agent. According to the present disclosure, because the first extinguishing agent is included in a lead film adjacent to an electrode lead with a large amount of heat, the fire extinguishing agent may quickly operate when a temperature of a battery rises.

    POWER BATTERY TOP COVER STRUCTURE
    10.
    发明公开

    公开(公告)号:EP4184672A1

    公开(公告)日:2023-05-24

    申请号:EP21218504.5

    申请日:2021-12-31

    摘要: A power battery top cover structure is disclosed in the present invention. A first protrusion protruding obliquely outwards is arranged on a battery pole, the battery pole is placed in a pole hole of a top cover sheet, the first protrusion and an outer peripheral side of the battery pole are protected by injection molding between the pole hole and the battery pole. At the same time, an inner wall of the pole hole is wrapped to complete fixed installation of the battery pole. By arranging the first protrusion, a second protrusion, and a locking recess portion, after the battery pole is placed in the pole hole of the top cover sheet, an insulating barrier is injection-molded between the pole hole and the battery pole to realize the installation on the top cover sheet, which reduces installation accessories, reduces production costs by more than 20%, and at the same time improves the production efficiency, so that the yield and product quality are greatly improved.