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公开(公告)号：US10714721B2
公开(公告)日：2020-07-14
申请号：US15594684
申请日：2017-05-15
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Quankun Li , Pinghua Deng , Peng Wang , Kai Wu , Yongshou Lin
Abstract: The present invention provides a secondary battery including: a housing, the housing being provided with an explosion proof valve at a bottom thereof, a cell pallet received in the housing and located at a bottom of the housing, the cell pallet being provided with a first through-hole and at least one groove, the first through-hole being aligned with the explosion proof valve and extending through the cell pallet to communicate a space above the cell pallet and a space below the cell pallet, the at least one groove being provided on an upper surface and/or a lower surface of the cell pallet, and the first through-hole communicating with at least one side edge of the cell pallet through the at least one groove; a bare cell received in the housing and seated on the cell pallet; and a top cover assembled to a top side of the housing.
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公开(公告)号：US10205141B2
公开(公告)日：2019-02-12
申请号：US15187909
申请日：2016-06-21
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jian Guo , Quankun Li , Pinghua Deng , Peng Wang , Lingbo Zhu , Qingkui Chi
Abstract: The secondary battery of the present invention includes: a top cover, a first electrode terminal, a second electrode terminal, an electrode-tab pad-plate, an electrode assembly, a first electrode-tab and a second electrode-tab; the first and second electrode terminal are arranged on the top cover, the electrode-tab pad-plate is a strip-plate shaped structure, and is located between the top cover and electrode assembly, the first electrode-tab includes a connecting part, a folding part and a welding part, the connecting part is beneath the electrode-tab pad-plate, the welding part is above the electrode-tab pad-plate, the connecting part is connected with the electrode assembly, the welding part is connected with the first electrode terminal, the folding part is connected with the connecting part and welding part bypassing the electrode-tab pad-plate; the second electrode terminal is connected with the electrode assembly through the second electrode-tab.
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公开(公告)号：US20170331090A1
公开(公告)日：2017-11-16
申请号：US15594684
申请日：2017-05-15
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Quankun Li , Pinghua Deng , Peng Wang , Kai Wu , Yongshou Lin
Abstract: The present invention provides a secondary battery including: a housing, the housing being provided with an explosion proof valve at a bottom thereof; a cell pallet received in the housing and located at a bottom of the housing, the cell pallet being provided with a first through-hole and at least one grooves, the first through-hole being aligned with the explosion proof valve and extending through the cell pallet to communicate a space above the cell pallet and a space below the cell pallet, the at least one grooves being provided on an upper surface and/or a lower surface of the cell pallet, and the first through-hole communicating with at least one side edge of the cell pallet through the at least one grooves; a bare cell received in the housing and seated on the cell pallet; and a top cover assembled to a top side of the housing.
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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
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Quankun Li , Pinghua Deng , Peng Wang , Jian Guo , Lingbo Zhu , Yongshou Lin
Abstract: 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
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Quankun Li , Jian Guo , Lingbo Zhu , Pinghua Deng , Peng Wang , Kai Wu
Abstract: 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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Patent Agency Ranking
公开(公告)号：US10199627B2
公开(公告)日：2019-02-05
申请号：US15398457
申请日：2017-01-04
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jian Guo , Quankun Li , Pinghua Deng , Lingbo Zhu , Qingkui Chi
Abstract: 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
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Quankun Li , Kai Wu , Pinghua Deng , Xiaobo Chen
CPC classification number: H01M2/345 , H01M2/043 , H01M2/305 , H01M2200/20 , H01M2220/10 , H01M2220/20
Abstract: 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：US10763487B2
公开(公告)日：2020-09-01
申请号：US15586051
申请日：2017-05-03
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Quankun Li , Kai Wu , Pinghua Deng , Xiaobo Chen
Abstract: A power battery cap structure and a power battery are provided. The power battery cap structure includes a first terminal, a second terminal and a cap assembly; the second terminal is electrically insulated from the cap assembly. The power battery cap structure further includes a resistance which electrically connects 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 and second short circuit part are attached to the cap sheet, when internal pressure of the power battery exceeds predetermined threshold, the first and second short circuit part act and form a first path passing through the first terminal, the second short circuit part, the resistance and the second terminal, and a second path passing through the first terminal, the first and second short circuit part and the second terminal.
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公开(公告)号：US10476048B2
公开(公告)日：2019-11-12
申请号：US16221959
申请日：2018-12-17
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jian Guo , Quankun Li , Pinghua Deng , Peng Wang , Lingbo Zhu , Qingkui Chi
Abstract: The secondary battery of the present invention includes: a top cover, a first electrode terminal, a second electrode terminal, an electrode-tab pad-plate, an electrode assembly, a first electrode-tab and a second electrode-tab; the first and second electrode terminal are arranged on the top cover, the electrode-tab pad-plate is a strip-plate shaped structure, and is located between the top cover and electrode assembly, the first electrode-tab includes a connecting part, a folding part and a welding part, the connecting part is beneath the electrode tab pad plate, the welding part is above the electrode tab pad plate, and the connecting part is connected with the electrode assembly, the welding part is connected with the first electrode terminal, the folding part is connected with the connecting part and welding part bypassing the electrode-tab pad-plate; the second electrode terminal is connected with the electrode assembly through the second electrode-tab.
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公开(公告)号：US20190115568A1
公开(公告)日：2019-04-18
申请号：US16218018
申请日：2018-12-12
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Quankun LI , Pinghua Deng , Peng Wang , Kai Wu , Junjie Jiang
Abstract: The top cover structure of the power battery includes a cap plate, a cathode column, a conducting piece and a reversing piece, the conducting piece is electrically connected with the cathode column, the cathode column is insulatedly assembled with the cap plate; the reversing piece includes a welding part, a embossment and a joint part arranged between the welding part and the embossment, the embossment is arranged at the center of the reversing piece and protrudes towards the conducting piece, the welding part is arranged on the outer margin of the joint part; the welding part is electrically connected with the cap plate, the embossment does not contact the conducting piece, when the pressure inside the power battery increases, the reversing piece receives the pressure inside the power battery, and moves upwards, so that the embossment is electrically connected to the conducting piece.
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