公开(公告)号：US20220328941A1

公开(公告)日：2022-10-13

申请号：US17710936

申请日：2022-03-31

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Peipei Guo ,  Yi Zhao ,  Ping He ,  Hongxin Fang ,  Wenqiang Cheng

IPC: H01M50/54 ,  H01M10/0587 ,  H01M10/04 ,  H01M50/528 ,  H01M50/538 ,  H01M10/0525 ,  H01M10/0585

Abstract: A secondary battery cell includes 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 includes 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.

公开(公告)号：US11145868B2

公开(公告)日：2021-10-12

申请号：US16143644

申请日：2018-09-27

Applicant: Ningde Amperex Technology Limited

Inventor： Peipei Guo ,  Yi Zhao ,  Ping He ,  Yejun Peng ,  Wenqiang Cheng

IPC: H01M4/70 ,  H01G11/74 ,  H01M50/531 ,  H01G11/28 ,  H01G11/52 ,  H01G11/70 ,  H01M10/058 ,  H01M10/0525 ,  H01M10/054

Abstract: The invention provides an electrode piece, a cell and an energy storage device. The electrode piece is used to form the cell, comprising: a current collector; a diaphragm; and a groove. Among them, the current collector exposed at the bottom of the groove is a blank current collector, and the blank current collector is formed with a connecting portion; the connecting portion is cut out from the blank current collector as a part of the blank current collector and bent on the blank current collector along the width direction; and at least a portion of the connecting portion extends beyond the outer edge of the current collector in the width direction. The electrode piece of the invention can increase the energy density of the cell and the connection strength of the blank current collector of the electrode tab and the electrode piece, and reduce the production cost.

公开(公告)号：US11011789B2

公开(公告)日：2021-05-18

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: H01M50/183 ,  H01M50/116 ,  H01M50/124 ,  H01M10/058 ,  H01M50/543

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.

公开(公告)号：US20190097259A1

公开(公告)日：2019-03-28

申请号：US16203597

申请日：2018-11-28

Applicant: Ningde Amperex Technology Limited

Inventor： Peipei Guo ,  Ping He ,  Yi Zhao ,  Hongxin Fang ,  Wenqiang Cheng

IPC: H01M10/04 ,  H01M2/26

Abstract: The present application provides a second battery cell comprising first and second electrodes, first and second tabs, and a separator. The first electrode and second electrode include first and second current collectors and first and second active material layers respectively. The first and second electrodes are formed with first and second tab accommodating grooves for accommodating the first and second tabs respectively. The first tabs are arranged in pairs, and two first tabs in each pair are respectively located on the upper and lower sides of the first winding starting section of the first electrode along the thickness direction of the secondary battery cell; and/or the second tabs are arranged in pairs, and two second tabs in each pair are respectively located on the upper and lower sides of the second winding starting section of the second electrode along the thickness direction of the secondary battery cell.

公开(公告)号：US20190027758A1

公开(公告)日：2019-01-24

申请号：US16143644

申请日：2018-09-27

Applicant: Ningde Amperex Technology Limited

Inventor： Peipei Guo ,  Yi Zhao ,  Ping He ,  Yejun Peng ,  Wenqiang Cheng

IPC: H01M4/70 ,  H01M10/0525 ,  H01M10/054 ,  H01M2/26 ,  H01G11/28 ,  H01G11/52 ,  H01G11/70

Abstract: The invention provides an electrode piece, a cell and an energy storage device. The electrode piece is used to form the cell, comprising: a current collector; a diaphragm; and a groove. Among them, the current collector exposed at the bottom of the groove is a blank current collector, and the blank current collector is formed with a connecting portion; the connecting portion is cut out from the blank current collector as a part of the blank current collector and bent on the blank current collector along the width direction; and at least a portion of the connecting portion extends beyond the outer edge of the current collector in the width direction. The electrode piece of the invention can increase the energy density of the cell and the connection strength of the blank current collector of the electrode tab and the electrode piece, and reduce the production cost.

公开(公告)号：US11329352B2

公开(公告)日：2022-05-10

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: H01M10/00 ,  H01M50/54 ,  H01M10/0587 ,  H01M10/04 ,  H01M50/528 ,  H01M50/538 ,  H01M10/0525 ,  H01M10/0585

Abstract: The present invention provides a secondary battery. The secondary battery comprises a first electrode tab and a first electrode plate. The first electrode plate first electrode plate comprises a first current collector, a first active layer, a first electrode tab receiving groove and a first electrode plate notch. The first active layer is disposed on a surface of the first current collector. The first electrode tab receiving groove is configured to receive the first electrode tab, and the first electrode tab is electrically connected with the first current collector through the first electrode tab receiving groove. The first electrode plate notch is disposed on an edge of the first electrode tab receiving groove.

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.

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.

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.

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.