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公开(公告)号：EP4318766A1
公开(公告)日：2024-02-07
申请号：EP22919475.8
申请日：2022-01-14
发明人： CHEN, Xinxiang , ZHANG, Xiaoping , ZHENG, Yulian , LIU, Yanyu , LIN, Denghua
IPC分类号： H01M50/289
摘要： The present disclosure provides an insulation patch (224), a battery cell (22), a battery (2), and a device. An electrode assembly (223) is coated with the insulation patch (224), and a side edge of the insulation patch (224) has a hot-melt region (2241) and a non-hot-melt region (2242). The hot-melt region (2241) is configured to hot melt with a lower plastic (2212), and the non-hot-melt region (2242) is lower than the hot-melt region (2241). After the electrode assembly (223) coated with the insulation patch (224) is mounted to a shell (222), and the hot-melt region (2241) of the insulation patch (224) is hot melted to the lower plastic (2212) of a top cover assembly (221), when a top cover member (2211) and the shell (222) are welded together by using a laser, the non-hot-melt region (2242) of the insulation patch (224) is lower than the hot-melt region (2241), preventing the non-hot-melt region (2242) of the insulation patch (224) from interfering with a welding position between the top cover member (2211) and the shell (222). Therefore, when the top cover member (2211) and the shell (222) are welded, no dry joint occurs, which helps improve sealing between the top cover member (2211) and the shell (222), prevents leakage of the electrode assembly (223), and further improves safety of the electrode assembly (223).
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公开(公告)号：EP4386957A1
公开(公告)日：2024-06-19
申请号：EP21967664.0
申请日：2021-12-16
发明人： LIU, Yanyu , ZHENG, Yulian , ZHANG, Xiaoxi , HUANG, Shoujun , CHEN, Xinxiang , WANG, Peng
IPC分类号： H01M50/30
摘要： A battery cell, a cover assembly, a battery, an electricity-consuming apparatus, a method and a device of manufacturing the battery cell are provided by the present application. The battery cell includes an electrode assembly; a casing accommodating the electrode assembly, in which the casing includes a wall portion, the wall portion includes a stepped hole, the stepped hole includes a first hole segment, a second hole segment and a first stepped face; a sealing member, in which a first sealing interface is formed between the sealing member and the first stepped face, the first sealing interface surrounds the first hole segment, and the sealing member includes a ventilating hole communicating with the first hole segment; a gas-ventilating film including a body and a convex portion, in which the body covers the ventilating hole, a second sealing interface is formed between the body and the sealing member, the second sealing interface surrounds the ventilating hole, the convex portion is arranged at a side of the body facing the sealing member, and the convex portion is located between the hole wall of the second hole segment and the sealing member to restrict the gas-ventilating film moving in a radial direction of the second hole segment; and a fixing member, connected to the wall portion and configured to provide a pressure to the gas-ventilating film. The present application can alleviate the battery safety problem caused by exhausting gas.
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3.发明公开
公开(公告)号：EP4123798A1
公开(公告)日：2023-01-25
申请号：EP21912315.5
申请日：2021-06-01
发明人： LIU, Yanyu , HUANG, Shoujun , CHEN, Xinxiang , ZHENG, Yulian , WANG, Peng
IPC分类号： H01M50/147 , H01M50/30
摘要： The application relates to an end cover assembly, a battery cell, a battery, and a device and method for manufacturing a battery cell. The end cover assembly is used for a battery cell, and includes a cover plate, the cover plate is provided with a pressure relief hole penetrating through the cover plate in a thickness direction, a breathable film, arranged opposite to the pressure relief hole and configured to exhaust gas inside the battery cell, a projection of the breathable film in the thickness direction does not overlap with a projection of the cover plate in the thickness direction; and a fixing member, configured to connect the cover plate to fix the breathable film. The application intends to solve the problem of a large space occupied by the breathable film.
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公开(公告)号：EP4276988A1
公开(公告)日：2023-11-15
申请号：EP22860065.6
申请日：2022-07-06
发明人： LIU, Yanyu , ZHENG, Yulian , HUANG, Shoujun , CHEN, Xinxiang , WANG, Peng
IPC分类号： H01M50/169 , H01M50/15 , H01M50/14
摘要： Embodiments of this application provide a battery cell, a battery, and an apparatus using a battery, where the battery cell includes: a housing with an opening; and an end cover covering the opening. The housing and the end cover are welded together to form a fusion zone. The end cover is provided with a first stress-relieving groove on an inner surface. The first stress-relieving groove is configured to recess from the inner surface of the end cover in a direction leaving the inside of the battery cell, so as to relieve stress produced by welding of the housing and the end cover. The technical solutions provided in the embodiments of this application can enhance safety performance of batteries.
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公开(公告)号：EP4120448A1
公开(公告)日：2023-01-18
申请号：EP21787294.4
申请日：2021-06-01
发明人： HUANG, Shoujun , LIU, Yanyu , CHEN, Xinxiang , ZHENG, Yulian , WANG, Peng
IPC分类号： H01M50/147 , H01M50/342 , H01M50/30
摘要： The present application provides an end cover assembly, a battery cell, a battery, an electric device and a method for preparing a battery cell and an apparatus for manufacturing a battery cell, and belongs to the technical field of battery manufacturing. The present application provides an end cover assembly, where the end cover assembly includes: a cover plate provided with a pressure relief hole; a fixing member fixed on the cover plate, the fixing member having a first through hole and a second through hole, and the first through hole being opposite to the pressure relief hole; and a gas permeable membrane covering at least a portion of the pressure relief hole, an edge part of the gas permeable membrane being connected to the fixing member, and a portion of the edge part being embedded into the second through hole, so as to prevent the edge part from moving relative to the fixing member. The present application further provides a battery cell, a battery and an electric device, all of which include the end cover assembly, thus having good safety performance and sealing performance. The present application further provides a method for preparing a battery cell and an apparatus for manufacturing a battery cell, which are used for manufacturing the above-mentioned battery cell.
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6.发明公开
公开(公告)号：EP4207459A1
公开(公告)日：2023-07-05
申请号：EP21957719.4
申请日：2021-09-29
发明人： HUANG, Shoujun , ZHENG, Yulian , WANG, Peng , CHEN, Xinxiang , LIU, Yanyu
IPC分类号： H01M50/342 , H01M50/578
摘要： Embodiments of this application provide a pressure relief mechanism, a battery cell, a battery, an electrical device, and a pressure relief mechanism manufacturing method. The pressure relief mechanism is disposed on a housing plate of a battery cell, and including: a connecting portion, located in a peripheral region of the pressure relief mechanism, and configured to connect to the housing plate; a first part, where one end of the first part is connected to the connecting portion, and the other end of the first part extends out obliquely toward an interior of the battery cell; a fragile portion, connected to the extending end of the first part; and a second part, taking a shape that protrudes toward the interior of the battery cell, where an outer edge region of the second part is connected to the fragile portion. When an internal temperature or gas pressure of the battery cell is less than a first preset value, the fragile portion is squeezed and pressed by the first part and/or the second part. The technical solutions of embodiments of this application can effectively extend the lifespan of the pressure relief mechanism.
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7.发明公开
公开(公告)号：EP4187660A1
公开(公告)日：2023-05-31
申请号：EP21936237.3
申请日：2021-09-29
发明人： HUANG, Shoujun , WANG, Peng , ZHENG, Yulian , ZHANG, Xiaoping , LIU, Yanyu , CHEN, Xinxiang
IPC分类号： H01M10/04 , H01M50/209
摘要： Embodiments of this application provide a pressure relief mechanism , a battery cell , a battery, an electric apparatus, and a manufacturing method thereof. A pressure relief mechanism is provided on a housing plate of a battery cell and includes: a connecting portion , where the connecting portion is located at an outer peripheral region of the pressure relief mechanism and is configured to connect the housing plate ; a first part, where an end of the first part is connected to the connecting portion, and another end protrudes obliquely toward an interior of the battery cell ; a weak portion , where the weak portion is provided at the protruding end of the first part ; and a second part ), where an outer edge region of the second part is connected to the weak portion , and the outer edge region extends obliquely away from the interior of the battery cell , where when an air pressure inside the battery cell is less than a first preset value, the weak portion is pressed by the first part ) and/or the second part . Service life of the pressure relief mechanism can be effectively extended by using a technical solution in the embodiments of this application.
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8.发明公开
公开(公告)号：EP4050711A1
公开(公告)日：2022-08-31
申请号：EP20937167.3
申请日：2020-12-31
发明人： LIU, Yanyu , HUANG, Shoujun , CHEN, Xinxiang , ZHENG, Yulian , WANG, Peng
IPC分类号： H01M50/147
摘要： An end cap assembly (23), a battery cell (20), a battery (100), battery cell (20) manufacturing equipment (2000) and method are provided, which belong to the technical field of batteries. The end cap assembly (23) includes an end cap (231), an electrode terminal (232) and a connector (233). The end cap (231) is provided with an electrode lead-out hole (2311) which penetrates the end cap (231) in a thickness direction (Z) of the end cap (231). The electrode terminal (232) is configured to be electrically connected to the electrode assembly (22). The connector (233) is configured to connect the end cap (231) to fix the electrode terminal (232). The electrode terminal (232) is provided opposite to the electrode lead-out hole (2311), and a projection of the electrode terminal (232) in the thickness direction (Z) does not overlap with a projection of the end cap (231) in the thickness direction (Z). The connector (23) serves to connect the electrode terminal (232) and the end cap (231), thereby fixing the electrode terminal (232) and the end cap (231). The electrode terminal (232) is provided opposite to the electrode lead-out hole (2311), and a projection of the electrode terminal (232) in the thickness direction (Z) does not overlap with a projection of the end cap (231) in the thickness direction (Z), thus a radial size of the electrode terminal (232) is smaller, which reduces the space occupied by the electrode terminal (232), saves material and has better economy.
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