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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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公开(公告)号：US10199627B2
公开(公告)日：2019-02-05
申请号：US15398457
申请日：2017-01-04
发明人： Jian Guo , Quankun Li , Pinghua Deng , Lingbo Zhu , Qingkui Chi
摘要： The invention provides a secondary battery which comprises a cap plate and at least one cell. The secondary battery further comprises connecting pieces, each connecting piece is parallel to the cap plate and positioned at an inside of the cap plate in a thickness direction of the cap plate, a longitudinal direction of each connecting piece is parallel to a length direction of the cap plate, a transverse direction of each connecting piece is parallel to a width direction of the cap plate. Each connecting piece has: a tab welding portion for being welded to the corresponding tab of each cell; and an electrode terminal welding portion connected to the tab welding portion along the longitudinal direction of each connecting piece for being welded to the corresponding electrode terminal of the cap plate so as to electrically connect the corresponding electrode terminal and the corresponding tab of each cell.
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公开(公告)号：US09929396B2
公开(公告)日：2018-03-27
申请号：US14842742
申请日：2015-09-01
发明人： Quankun Li , Kai Wu , Pinghua Deng , Xiaobo Chen
CPC分类号： H01M2/345 , H01M2/043 , H01M2/305 , H01M2200/20 , H01M2220/10 , H01M2220/20
摘要： A power battery cap structure and a power battery are provided in the present invention. The power battery cap structure includes a first terminal, a second terminal and a cap assembly; both the first terminal and the second terminal are provided on the cap assembly, and the second terminal is electrically insulated from the cap assembly. The power battery cap structure further includes a resistance attached to the first terminal and electrically connected the first terminal with the cap assembly. The cap assembly includes a cap sheet, a first short circuit part and a second short circuit part; the first short circuit part and the second short circuit part are attached to the cap sheet and configured to act upwards when pressure inside the power battery increases so that the first terminal and the second terminal are electrically connected to form a protection loop; and the first short circuit part and the resistance are connected in parallel when the protection loop is formed. With the technical solution of the present invention, a separate protection loop can be formed in a power battery respectively in the cases of overcharge and nailing abuses, thereby efficiently protecting the power battery.
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公开(公告)号：US20170207437A1
公开(公告)日：2017-07-20
申请号：US15398457
申请日：2017-01-04
申请人： Contemporary Amperex
发明人： Jian Guo , Quankun Li , Pinghua Deng , Lingbo Zhu , Qingkui Chi
CPC分类号： H01M2/24 , H01M2/0404 , H01M2/0469 , H01M2/26 , H01M2/30 , H01M10/0436
摘要： The invention provides a secondary battery which comprises a cap plate and at least one cell. The secondary battery further comprises connecting pieces, each connecting piece is parallel to the cap plate and positioned at an inside of the cap plate in a thickness direction of the cap plate, a longitudinal direction of each connecting piece is parallel to a length direction of the cap plate, a transverse direction of each connecting piece is parallel to a width direction of the cap plate. Each connecting piece has: a tab welding portion for being welded to the corresponding tab of each cell; and an electrode terminal welding portion connected to the tab welding portion along the longitudinal direction of each connecting piece for being welded to the corresponding electrode terminal of the cap plate so as to electrically connect the corresponding electrode terminal and the corresponding tab of each cell.
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58.发明授权公开(公告)号：US12100867B2
公开(公告)日：2024-09-24
申请号：US18234496
申请日：2023-08-16
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 , H01M50/15 , H01M50/60 , 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：US12080908B2
公开(公告)日：2024-09-03
申请号：US17564108
申请日：2021-12-28
发明人： Siying Huang , Quankun Li , Shiyao Zhang , Jinmei Xu , Fenggang Zhao , Peng Wang
IPC分类号： H01M50/271 , H01M50/143
CPC分类号： H01M50/271 , H01M50/143
摘要： The present application relates to the field of an energy storage device, and more particularly, to a top cover assembly of a secondary battery, the secondary battery and an apparatus using a battery. The top cover assembly includes: a top cover sheet provided with an explosion-proof hole; an explosion-proof sheet, a position of the explosion-proof sheet corresponding to the explosion hole; and a fixing member, at least part of the fixing member being located between the top cover sheet and the explosion-proof sheet and connecting the top cover sheet and the explosion-proof sheet; where one of the explosion-proof hole and the fixing member is provided with a protrusion and the other is provided with a first groove, and the protrusion and the first groove are fixed.
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公开(公告)号：US11949119B2
公开(公告)日：2024-04-02
申请号：US16928523
申请日：2020-07-14
发明人： Quankun Li , Shiyao Zhang , Peng Wang
IPC分类号： H01M50/325 , H01M50/147 , H01M50/155 , H01M50/183 , H01M50/184 , H01M50/30 , H01M50/358 , H01M50/383
CPC分类号： H01M50/325 , H01M50/147 , H01M50/155 , H01M50/183 , H01M50/184 , H01M50/358 , H01M50/383 , H01M50/394
摘要： A cover assembly of a secondary battery and a secondary battery. The cover assembly includes: a cover plate including a gas vent; a gas exhaust valve configured to seal the gas vent and deform in response to an increase in temperature to get out of a state of sealing the gas vent; and a protective part at least partially covering the gas vent and having a gas permeability coefficient smaller than a gas permeability coefficient of the gas exhaust valve.
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