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公开(公告)号：US11881588B2
公开(公告)日：2024-01-23
申请号：US17352352
申请日：2021-06-20
发明人： Yuanbao Chen , Rui Yang , Haizu Jin , Dongyang Shi , Ning Chen , Quankun Li
IPC分类号： H01M50/538 , H01M50/209 , H01M50/533 , H01M50/186
CPC分类号： H01M50/186 , H01M50/209 , H01M50/533 , H01M50/538
摘要： The present application relates to a secondary battery and a battery module. The secondary battery comprises: a casing, which is provided with an accommodating hole with an opening; a top cover assembly, which is in sealed connection with the casing to close the opening; an electrode assembly, which is arranged in the accommodating hole, and comprises two end faces opposite to a first direction perpendicular to an axial direction of the accommodating hole, and tabs extending from the end faces, the electrode assembly comprises two or more electrode units, wherein two or more electrode units are stacked in the axial direction, and in a second direction perpendicular to the axial direction and the first direction, the size of the tabs is smaller than that of the end faces; and a current collector, which comprises a body portion.
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42.发明授权公开(公告)号：US11777184B2
公开(公告)日：2023-10-03
申请号：US17831673
申请日：2022-06-03
发明人： Qichang Cai , Chengyou Xing , Libin Zhong , Wenwei Chen , Quankun Li , Peng Wang
IPC分类号： H01M50/645 , H01M50/148 , H01M50/186 , H01M50/60 , H01M50/15 , H01M50/636
CPC分类号： H01M50/645 , H01M50/148 , H01M50/186 , H01M50/15 , H01M50/60 , H01M50/636 , H01M2220/20 , Y02E60/10
摘要： The present application provides an end cover assembly, a secondary battery, a battery module, a device, a liquid-injection method and a device thereof. The end cover assembly for the secondary battery includes: an end cover, provided with a through hole for injecting electrolyte, and including a connecting portion; a sealing assembly, configured to seal the through hole; a locking-fixing member, configured to be movable relative to the connecting portion in a radial direction of the through hole, so as to realize switching between a locked state and an unlocked state of the locking-fixing member and the connecting portion. In the locked state, the locking-fixing member presses against the sealing assembly to restrict the end cover to be separated from the sealing assembly; in the unlocked state, the end cover and the sealing assembly are separable to allow electrolyte to be injected from the through hole.
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公开(公告)号：US11424500B2
公开(公告)日：2022-08-23
申请号：US17120593
申请日：2020-12-14
发明人： Chengyou Xing , Chengdu Liang , Ningsheng Wu , Wenlong Kang , Peng Wang , Quankun Li , Lingyan Jiang
IPC分类号： H01M50/116
摘要： The present disclosure relates to a secondary battery, a battery module, and a device using the secondary battery as a power source. The secondary battery includes a casing and a top cover for connecting with the casing. The casing includes an end portion provided with an opening. The top cover is used to cover the opening of the casing. The top cover includes an inserting portion extending into the casing from the opening. A plurality of notches are provided on an inner side of the end portion of the casing or on a side wall of the inserting portion facing the casing. In the secondary battery, the battery module, and the device using the secondary battery as a power source according to the present disclosure, the secondary battery can reduce the possibility of short circuit occurring in the electrode assembly and improve the operational safety of the secondary battery.
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公开(公告)号：US10790483B2
公开(公告)日：2020-09-29
申请号：US15881089
申请日：2018-01-26
发明人： Chengyou Xing , Quankun Li , Peng Wang , Zhijun Guo
摘要： A top cap structure for a power battery is provided. The power battery top cap structure includes a first and second electrode assemblies, and a top cap piece. The first electrode assembly includes a first electrode column having an upper and lower sections, a first seal member and a first connection block. The upper section and the first connection block are formed from a first base metal. The lower section is formed from a second base metal different from the first base metal. The upper section includes a step portion, and the lower section is joined with a bottom surface of the upper section below the top cap piece. The first seal member includes a horizontal extending portion. The horizontal extending portion is disposed between a lower surface of the top cap piece and the step portion. The top portion of the upper section connects with the first connection block.
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公开(公告)号：US10784475B2
公开(公告)日：2020-09-22
申请号：US15873527
申请日：2018-01-17
发明人： Yulian Zheng , Chengyou Xing , Quankun Li , Peng Wang , Lulu Bai
摘要： The present disclosure provides a cap assembly for a secondary battery and a secondary battery. The cap assembly includes a cap plate, a fixing member, a connecting member and an electrode terminal, wherein the cap plate has an electrode lead-out hole; the fixing member is fixed to the cap plate through the connecting member and provided with a weakened portion that is close to a center line of the cap plate in a width direction of the cap plate; and the electrode terminal includes a terminal board, wherein the terminal board has an outer peripheral surface at least partially surrounded by the fixing member so that the electrode terminal is fixed to the fixing member, and the terminal board is provided on a side of the cap plate and covers the electrode lead-out hole.
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公开(公告)号：US10763466B2
公开(公告)日：2020-09-01
申请号：US16033201
申请日：2018-07-12
发明人： Baisong Chen , Quankun Li , Peng Wang , Chengyou Xing , Yulian Zheng
摘要： A top cap assembly of a secondary battery and second battery is provided. The top cap assembly may comprise: a top cap plate comprising an electrode extraction hole; an electrode terminal comprising a terminal plate, the terminal plate may be located on a side of the top cap plate and cover the electrode extraction hole; a first fixing component, the first fixing component may at least partially surround the terminal plate to fix the electrode terminal to the first fixing component; and a second fixing component comprising a main body and a first connection portion connected to the main body and extends away from the terminal plate, the main body may be fixedly connected to the first fixing component, and the first connection portion may be fixedly connected to the top cap plate.
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公开(公告)号：US10665826B2
公开(公告)日：2020-05-26
申请号：US15871463
申请日：2018-01-15
发明人： Xiang Li , Rulai Cai , Xianfeng Yu , Peng Wang , Quankun Li
摘要： Provided are a top cover assembly and a secondary battery containing the same. The top cover assembly includes a cover plate, and a first terminal assembly; the top cover plate includes a main body and a protrusion connected to the main body, the protrusion protrudes beyond an upper surface of the main body, an accommodation chamber is defined below the protrusion, the protrusion faces the accommodation chamber, the first terminal assembly includes a deformable plate, and the deformable plate is connected to the top cover plate and covers the accommodation chamber. Such solution can sufficiently utilize the space between the upper surface of the top cover plate and the upper surface of the second terminal assembly, improve the space utilization of the secondary battery, improve the deformation resistance of the top cover plate and the strength of the top cover plate, and keep the secondary battery safe.
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公开(公告)号：US10516151B2
公开(公告)日：2019-12-24
申请号：US15435681
申请日：2017-02-17
发明人： Quankun Li , Pinghua Deng , Peng Wang , Jian Guo , Lingbo Zhu , Yongshou Lin
摘要： The present application provides a top cover of power battery, including top cover plate, first electrode unit and second electrode unit, the first electrode unit includes insulation piece, conductive plate, deformable plate and sealing piece, the top cover plate is provided with deformable plate connecting hole and fixing hole, the deformable plate seals the deformable plate connecting hole, the insulation piece is provided with top cover plate connecting portion and conductive plate connecting portion, the insulation piece is fixed underneath the top cover plate through cooperation of top cover plate connecting portion and fixing hole, the conductive plate is insulated from and fixed with the top cover plate through the conductive plate connecting portion, the conductive plate is electrically connected with the deformable plate, the sealing piece seals path from the fixing hole to interior of the power battery passing through gap between insulation piece and top cover plate.
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公开(公告)号：US10418619B2
公开(公告)日：2019-09-17
申请号：US15485775
申请日：2017-04-12
发明人： Quankun Li , Jian Guo , Lingbo Zhu , Pinghua Deng , Peng Wang , Kai Wu
摘要： The present application provides a top cover of a power battery and the power battery. The top cover of the power battery includes a first electrode unit and a second electrode unit, the second electrode unit includes a deformable plate, an insulation piece and a conductive plate, the top cover plate is provided with a deformable plate connecting hole, the deformable plate seals the deformable plate connecting hole, the insulation piece is located underneath the top cover plate, the insulation piece is connected with the top cover plate, the conductive plate is insulated from and fixed with the top cover plate through the insulation piece and is electrically connected with the deformable plate. The power battery includes the above top cover of the power battery. The power battery provided by the present application can effectively prevent breaking, losing efficacy or deformation of the conductive plate during using process.
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公开(公告)号：US20190067649A1
公开(公告)日：2019-02-28
申请号：US15894767
申请日：2018-02-12
发明人： Quankun Li , Baisong Chen , Jian Guo , Peng Wang , Taosheng Zhu
摘要： The present disclosure provides a cap assembly for a secondary battery and a secondary battery. The cap assembly for the secondary battery includes a cap plate having an electrode lead-out hole; and a terminal assembly including a terminal board, a fixing member, a deformable sheet, a conductive sheet and an isolator, wherein the deformable sheet is attached to the terminal board; the conductive sheet includes a first portion provided between the terminal board and the cap plate; the terminal board is fixed to a side of the cap plate through the fixing member and covers the electrode lead-out hole, and the terminal board is electrically connected with the first portion through the deformable sheet; the deformable sheet is configured to deform to be electrically disconnected from the first portion in response to an increase in a pressure inside the secondary battery.
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