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    BATTERY CELL, BATTERY, POWER CONSUMING DEVICE, AND METHOD AND APPARATUS FOR MANUFACTURING BATTERY CELL
    6.
    发明公开
    BATTERY CELL, BATTERY, POWER CONSUMING DEVICE, AND METHOD AND APPARATUS FOR MANUFACTURING BATTERY CELL 审中-实审

    公开(公告)号：EP4354601A1

    公开(公告)日：2024-04-17

    申请号：EP21960942.7

    申请日：2021-10-20

    申请人： Contemporary Amperex Technology Co., Limited

    发明人： CHAI, Zhisheng ,  ZOU, Yang ,  CHI, Qingkui

    IPC分类号： H01M50/107 ,  H01M50/152 ,  H01M50/167 ,  H01M50/183 ,  H01M10/613

    CPC分类号： Y02E60/10 ,  H01M50/167 ,  H01M50/183 ,  H01M50/152 ,  H01M50/107 ,  H01M10/613

    摘要： Some embodiments of this application provide a battery cell, a battery, an electrical device, and a method and device for manufacturing a battery cell, and relate to the field of batteries. The battery cell includes a housing, an electrode assembly, and an end cap. The housing includes a sidewall and a bottom wall. The sidewall encloses the bottom wall on all sides. The sidewall and the bottom wall jointly define an accommodation cavity with an opening made at one end. The electrode assembly is disposed in the accommodation cavity. The end cap is configured to cover the opening. The sidewall includes a body portion and an end portion. The body portion is connected to the bottom wall. The end portion is connected to an end of the body portion, the end being away from the bottom wall. An outer peripheral surface of the end cap is welded to an inner surface of the end portion. A first stepped face is formed between the inner surface of the end portion and an inner surface of the body portion. The first stepped face is configured to restrict the end cap from moving closer to the bottom wall. The first stepped face is formed on the inner surface of the housing of the battery cell. The first stepped face can define the position of the end cap during mounting of the end cap, and can block out a laser beam during the welding between the outer peripheral surface of the end cap and the inner surface of the end portion, so as to prevent the laser beam from burning the electrode assembly.

    STORAGE CELL AND METHOD FOR MANUFACTURING SAME
    9.
    发明公开
    STORAGE CELL AND METHOD FOR MANUFACTURING SAME 审中-公开

    公开(公告)号：EP4224503A1

    公开(公告)日：2023-08-09

    申请号：EP21875381.2

    申请日：2021-09-24

    申请人： Nippon Chemi-Con Corporation

    发明人： KIMURA, Toshiki ,  KUROKI, Takashi ,  HAGIYA, Masayuki ,  TSUMEDA, Satoru

    IPC分类号： H01G11/74 ,  H01G9/008 ,  H01G9/12 ,  H01G11/14 ,  H01G11/78 ,  H01M50/172 ,  H01M50/183 ,  H01M50/531 ,  H01M50/572

    摘要： A storage cell disclosed includes: a storage element (8) having on its different end faces a cathode-side electrode tab (cathode tab 12) and an anode-side electrode tab (anode tab 10), respectively; a case (exterior case 4) accommodating the storage element within an accommodating part (6) having an opening (18); a current collector plate (14) formed integrally with an external terminal (16) and connecting to the electrode tab arranged on the opening side; and a sealing member (20) sealing the opening and deformable toward the opening by an internal pressure within the accommodating part, and the current collector plate is displaced toward the opening accompanying deformation of the sealing member so that connection with the electrode tab is released when a predetermined displacement amount is exceeded. This implements a current cutoff function dealing with rise in pressure within the case without impairing electrical characteristics of the storage element and the external terminal.

    BUTTON-TYPE SECONDARY BATTERY
    10.
    发明公开
    BUTTON-TYPE SECONDARY BATTERY 审中-公开

    公开(公告)号：EP4187658A1

    公开(公告)日：2023-05-31

    申请号：EP21869747.2

    申请日：2021-09-16

    申请人： LG Energy Solution, Ltd.

    发明人： KIM, Min Gyu ,  LEE, Yong Gon ,  LEE, Je Jun ,  LIM, Jae Won ,  MIN, Geon Woo ,  CHO, Min Su ,  SUNG, Joo Hwan ,  CHAE, Sang Hak

    IPC分类号： H01M10/04 ,  H01M50/54 ,  H01M50/528 ,  H01M50/166 ,  H01M50/545 ,  H01M50/183 ,  H01M50/449 ,  H01M50/109 ,  H01M50/153

    摘要： The present invention relates to a button-type secondary battery, and more particularly, to a button-type secondary battery, which has strong coupling so that a gas that is harmful to the human body does not leak to the outside of the battery even though an excessive internal pressure is generated by the gas generated inside the battery, and an electrolyte does not leak to the outside of the battery, is improved in a vacuum ratio occupied by an electrode assembly within the battery to maximize battery capacity and energy density, and is simplified and convenient in manufacturing process to improve production efficiency.
    The button-type secondary battery according to the present invention relates to a button-type secondary battery, of which a diameter is greater than a height, comprises: an electrode assembly; a lower can in which the electrode assembly is inserted and on which a first screw thread is formed on an outer circumferential surface thereof; an upper can which is configured to cover an opening of an upper end of the lower can and on which a second screw thread corresponding to the first screw thread is formed on an inner circumferential surface thereof; and an insulator interposed between the upper can and the lower can to prevent the upper can and the lower can from being short-circuited, wherein the electrode assembly is formed by stacking a plurality of first electrodes, a separator, and a second electrode in a horizontal direction, and a first electrode tab extending from the first electrodes of the electrode assembly is in contact with the upper can.