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公开(公告)号：US11189884B2
公开(公告)日：2021-11-30
申请号：US16546324
申请日：2019-08-21
Applicant: Ningde Amperex Technology Limited
Inventor： Peipei Guo , Ping He , Yejun Peng , Wenqiang Cheng
IPC: H01M2/16 , H01M50/449 , H01M50/463
Abstract: The present application discloses a cell and a battery, the cell comprising a first electrode, a second electrode, and a first separator and a second separator that are disposed between the first electrode and second electrode, wherein the first separator includes a first meshing structure beyond the first electrode and the second electrode, the second separator includes a second meshing structure beyond the first electrode and the second electrode, and the first meshing structure is meshed with the second meshing structure along a thickness direction of the cell. The cell provided by the present application can improve the dropping performance of the cell and enhance the safe use of cell.
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公开(公告)号：US20190089005A1
公开(公告)日：2019-03-21
申请号：US16194539
申请日：2018-11-19
Applicant: Ningde Amperex Technology Limited
Inventor： Peipei Guo , Liangzhen Xiao , Wei Gao , Kefei Wang , Yi Zhao , Ping He
IPC: H01M10/0587 , H01M10/0525 , H01M2/26 , H01M4/70
Abstract: The present disclosure provides a wound-type electrode assembly comprising a first and second electrode plates, a first and second electrode tabs, and a separator. The first and second electrode plates include a first current collector and active substance layer, and a second current collector and active substance layer. Two surfaces of the first current collector of the first winding start section of the first electrode plate are not coated with first active substance layer and defined as a first start blank current collector, the first start blank current collector is welded to a first electrode tab. The second pole piece comprises a second groove, a bottom of which is a second current collector and a circumference thereof is a second active substance layer; the second electrode tab is accommodated in the second groove and electrically connected to the second current collector at the second groove.
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公开(公告)号：US20190044108A1
公开(公告)日：2019-02-07
申请号：US16157181
申请日：2018-10-11
Applicant: Ningde Amperex Technology Limited
Inventor： Peipei Guo , Ping He , Yi Zhao , Yejun Peng , Wenqiang Cheng
IPC: H01M2/08 , H01M10/058 , H01M2/02
Abstract: The present application provides a package sealing structure, a preparation method thereof and a flexible packaging battery. In a package peripheral region of the package sealing structure, the insulating heat sealing layers of the two layers of packaging film face each other and are melted into one body to form an insulating fusion layer which seals and bonds the two layers of the packaging film together. The insulating fusion layer is formed with an overflow portion that overflows from the package peripheral region of the package sealing structure to the outer end surfaces of the core metal layers of the two layers of packaging film and covers completely the outer end surfaces of the core metal layer of the two layers of packaging film, so that the outer end surfaces of the core metal layers are insulated from the peripheral environment.
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公开(公告)号：US20190013505A1
公开(公告)日：2019-01-10
申请号：US15999755
申请日：2018-08-20
Applicant: Ningde Amperex Technology Limited
Inventor： Peipei Guo , Yi Zhao , Ping He , Wenqiang Cheng
IPC: H01M2/26 , H01M2/14 , H01M4/36 , H01M4/04 , H01M10/0525
Abstract: The present application relates to the field of energy storage devices and, in particular, relates to a battery electrode, and a secondary battery using the battery electrode. The battery electrode comprises an electrode tab, a current collector, and a diaphragm attached onto at least one surface of the current collector, wherein the diaphragm is provided with a groove, the electrode tab is embedded into the groove and is electrically connected with the current collector, the electrode tab comprises an embedded portion embedded in the groove and an exposed portion protruded outside the groove; wherein an upper surface of the embedded portion is covered with an active material coating layer. According to the present application, an embedded electrode tab is adopted, and a diaphragm covers a surface of an embedded portion.
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公开(公告)号：US20180190963A1
公开(公告)日：2018-07-05
申请号：US15908327
申请日：2018-02-28
Applicant: Ningde Amperex Technology Limited
Inventor： Peipei Guo , Yi Zhao , Ping He , Hongxin Fang , Wenqiang Cheng
IPC: H01M2/26 , H01M10/04 , H01M10/0585
CPC classification number: H01M2/266 , H01M2/22 , H01M2/263 , H01M10/0409 , H01M10/0431 , H01M10/0525 , H01M10/0585 , H01M10/0587 , H01M2220/20
Abstract: The present invention provides a secondary battery cell and winding formation system thereof. The secondary battery cell comprises an anode electrode plate, an anode electrode tab, a cathode electrode plate, a cathode electrode tab and a separator. The secondary battery cell winding formation system comprises a working platform, a winding mechanism, an anode electrode plate unwinding roller, an anode electrode plate cleaning mechanism, an anode electrode plate die-cutting mechanism, an anode electrode tab supply mechanism, an anode electrode tab connection mechanism, an anode electrode plate convey mechanism, a cathode electrode plate unwinding roller, a cathode electrode plate cleaning mechanism, a cathode electrode plate die-cutting mechanism, a cathode electrode tab supply mechanism a cathode electrode tab connection mechanism, a cathode electrode plate convey mechanism, a first separator unwinding roller, a second separator unwinding roller, a first separator convey mechanism and a second separator convey mechanism. The secondary battery cell manufactured by the secondary battery cell winding formation system of the present invention can effectively prevent the secondary battery cell from generating internal short circuit, thus improving the safety performance of the secondary battery cell while ensuring a high energy density.
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Patent Agency Ranking
公开(公告)号：US20150000115A1
公开(公告)日：2015-01-01
申请号：US14316197
申请日：2014-06-26
Inventor： Ping He , Hong xin Fang , Bai qing Zhang , Man sen Li , Da wei Chen
IPC: H01M10/0585 , H01M10/0525
CPC classification number: H01M10/0585 , H01M10/0525 , H01M2220/30 , Y02P70/54 , Y10T29/49108
Abstract: A method for manufacturing lithium ion cells includes the steps of: 1) coating a collector roll along an unreeling direction thereof to form one or more strip coated areas, two side edges of the coated area each being provided with an uncoated area to form tabs thereon; 2) compacting the coated collector roll and obtaining a compacted collector roll; 3) cutting the compacted collector roll into anode plates/cathode plates having different sizes each having a tab and rounded corners; 4) recombining an anode plate/a cathode plate with a separator; cutting the separator after recombination to form rounded corners at a position corresponding to the rounded corners of the anode plate/cathode plate and further obtain a mono-cell or a half-cell having different sizes; 5) stacking the mono-cells and half-cells into a step preliminary cell; and 6) hot pressing the stacked preliminary cell to form a whole lithium ion cell via bonding of the anode plates/cathode plates with the separator.
Abstract translation: 一种制造锂离子电池的方法包括以下步骤：1）沿着其收卷方向涂布收集辊以形成一个或多个带状涂覆区域，涂覆区域的两个侧边边缘均设置有未涂覆区域，以在其上形成凸片 ; 2）压实涂布的收集辊并获得压实的收集辊; 3）将压实的收集辊切割成具有不同尺寸的阳极板/阴极板，每个具有凸片和圆角; 4）将阳极板/阴极板与分离器重新组合; 复合后切割分离片，在与阳极板/阴极板的圆角对应的位置形成圆角，进一步得到单电池或具有不同尺寸的单电池或半电池; 5）将单细胞和半细胞堆叠成阶段预备细胞; 以及6）通过将阳极板/阴极板与隔膜结合来热压堆叠的初级电池以形成整个锂离子电池。
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公开(公告)号：US20250023149A1
公开(公告)日：2025-01-16
申请号：US18901584
申请日：2024-09-30
Applicant: Ningde Amperex Technology Limited
Inventor： Daolin Liu , Ping He
IPC: H01M50/112 , H01M50/174 , H01M50/474 , H01M50/477 , H01M50/483 , H01M50/486 , H01M50/55
Abstract: An electrochemical device, including a housing and N separators. The N separators and the housing together define N+1 accommodating cavities arranged along a first direction. The N+1 accommodating cavities include a first accommodating cavity and a second accommodating cavity adjacent to each other, wherein N≥2. A first electrode assembly is accommodated in the first accommodating cavity, and a second electrode assembly is accommodated in the second accommodating cavity. The second electrode assembly is far from a reference surface relative to the first electrode assembly. The reference surface is a plane that passes through the 10 center of the electrochemical device along the first direction and is perpendicular to the first direction. The volume V1 of the first accommodating cavity and the volume V2 of the second accommodating cavity satisfy 0.5%≤(V2−V1)/V1≤5%, so that the safety performance of the electrochemical device is improved.
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公开(公告)号：US11658344B2
公开(公告)日：2023-05-23
申请号：US16194539
申请日：2018-11-19
Applicant: Ningde Amperex Technology Limited
Inventor： Peipei Guo , Liangzhen Xiao , Wei Gao , Kefei Wang , Yi Zhao , Ping He
IPC: H01M10/0587 , H01M10/04 , H01M50/536 , H01M4/70 , H01M10/0525
CPC classification number: H01M10/0587 , H01M4/70 , H01M10/0431 , H01M50/536 , H01M10/0525
Abstract: The present disclosure provides a wound-type electrode assembly comprising a first and second electrode plates, a first and second electrode tabs, and a separator. The first and second electrode plates include a first current collector and active substance layer, and a second current collector and active substance layer. Two surfaces of the first current collector of the first winding start section of the first electrode plate are not coated with first active substance layer and defined as a first start blank current collector, the first start blank current collector is welded to a first electrode tab. The second pole piece comprises a second groove, a bottom of which is a second current collector and a circumference thereof is a second active substance layer; the second electrode tab is accommodated in the second groove and electrically connected to the second current collector at the second groove.
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公开(公告)号：US10693113B2
公开(公告)日：2020-06-23
申请号：US15999755
申请日：2018-08-20
Applicant: Ningde Amperex Technology Limited
Inventor： Peipei Guo , Yi Zhao , Ping He , Wenqiang Cheng
Abstract: The present application relates to the field of energy storage devices and, in particular, relates to a battery electrode, and a secondary battery using the battery electrode. The battery electrode comprises an electrode tab, a current collector, and a diaphragm attached onto at least one surface of the current collector, wherein the diaphragm is provided with a groove, the electrode tab is embedded into the groove and is electrically connected with the current collector, the electrode tab comprises an embedded portion embedded in the groove and an exposed portion protruded outside the groove; wherein an upper surface of the embedded portion is covered with an active material coating layer. According to the present application, an embedded electrode tab is adopted, and a diaphragm covers a surface of an embedded portion.
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公开(公告)号：US09601810B2
公开(公告)日：2017-03-21
申请号：US14316197
申请日：2014-06-26
Inventor： Ping He , Hong xin Fang , Bai qing Zhang , Man sen Li , Da wei Chen
IPC: H01M10/0585 , H01M10/0525
CPC classification number: H01M10/0585 , H01M10/0525 , H01M2220/30 , Y02P70/54 , Y10T29/49108
Abstract: A method for manufacturing lithium ion cells includes the steps of: 1) coating a collector roll along an unreeling direction thereof to form one or more strip coated areas, two side edges of the coated area each being provided with an uncoated area to form tabs thereon; 2) compacting the coated collector roll and obtaining a compacted collector roll; 3) cutting the compacted collector roll into anode plates/cathode plates having different sizes each having a tab and rounded corners; 4) recombining an anode plate/a cathode plate with a separator; cutting the separator after recombination to form rounded corners at a position corresponding to the rounded corners of the anode plate/cathode plate and further obtain a mono-cell or a half-cell having different sizes; 5) stacking the mono-cells and half-cells into a step preliminary cell; and 6) hot pressing the stacked preliminary cell to form a whole lithium ion cell via bonding of the anode plates/cathode plates with the separator.
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