公开(公告)号：US20170297269A1

公开(公告)日：2017-10-19

申请号：US15299089

申请日：2016-10-20

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Yajie ZHANG ,  Ping HE ,  Liqing LIN ,  Jiali DONG

IPC: B29C65/52 ,  B29C65/48 ,  H01M2/08 ,  B33Y10/00 ,  H01M10/0525 ,  B33Y80/00 ,  H01M10/058 ,  B29K105/00 ,  B29K33/00 ,  B29L31/00

CPC classification number: B29C65/526 ,  B29C64/112 ,  B29C65/4805 ,  B29K2033/00 ,  B29K2105/0097 ,  B29L2031/7146 ,  B33Y10/00 ,  B33Y80/00 ,  H01M2/0434 ,  H01M2/08 ,  H01M10/0525 ,  H01M10/058

Abstract: This application relates to a method of edge sealing for a secondary lithium battery, including: (1) drawing a 3D model of a battery edge of a secondary lithium battery, and inputting it into a 3D printer; (2) positioning the secondary lithium battery in a 3D printing area, and fixing a relative position of the secondary lithium battery in the 3D printing area; (3) stimulating, by the 3D printer, the battery edge according to the 3D model and setting a printing path; (4) adding edge sealing glue in a printing head of the 3D printer, the printing head moves according to the set printing path and meantime performs at least one time of printing, so that printed edge sealing glue covers the battery edge; (5) solidifying the edge sealing glue. The method of edge sealing of this application has broader application, which can be applied to batteries of any shape.

公开(公告)号：US20250062496A1

公开(公告)日：2025-02-20

申请号：US18938632

申请日：2024-11-06

Applicant: Ningde Amperex Technology Limited

Inventor： Chenchen LI ,  Ping HE ,  Daolin LIU

IPC: H01M50/48 ,  H01M50/112 ,  H01M50/141 ,  H01M50/193 ,  H01M50/198

Abstract: An electrochemical device, including a first housing, a second housing, and a first separation piece. The first separation piece is disposed between the first housing and the second housing. A first cavity and a second cavity are disposed on two sides of the first separation piece of the electrochemical device respectively. The first separation piece includes a first substrate layer and a first sealing material layer located on a surface of the first substrate layer. The electrochemical device satisfies: 1.2≤Fs11/F11≤15, where F11 is a peel force between the first sealing material layer and the first substrate layer, and Fs11 is a peel force between the first housing and the first sealing material layer. This arrangement can reduce the risk of bursting the seal interface when the electrochemical device is impacted such as dropped, thereby improving the safety and reliability of the electrochemical device.

公开(公告)号：US20220093999A1

公开(公告)日：2022-03-24

申请号：US17219826

申请日：2021-03-31

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Peipei GUO ,  Yejun PENG ,  Sen LIN ,  Ping HE

IPC: H01M50/186 ,  H01M50/184

Abstract: A battery includes a battery core and a packaging shell. The battery core includes a first side face and a second side face that intersect with the first side face, and the packaging shell includes a body enclosing the battery core and a side seal located on a side of the first side face. The side seal includes: a first folded edge including a first portion and a second portion, wherein the first portion extends along the second side face in a first direction away from the body. The second portion extends from the second end in a second direction toward the body, and a second folded edge extending from the fourth end along the first side face.

公开(公告)号：US20170170455A1

公开(公告)日：2017-06-15

申请号：US15444189

申请日：2017-02-27

Applicant: DONGGUAN AMPEREX TECHNOLOGY LIMITED ,  NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Bin ZHANG ,  Yi ZHAO ,  Ping HE ,  Hongxin FANG ,  Wenqiang CHENG

IPC: H01M4/04 ,  B23K26/352 ,  B23K26/00 ,  H01M2/26 ,  H01M10/0525

CPC classification number: H01M4/0471 ,  B23K26/352 ,  B23K26/361 ,  H01M2/26 ,  H01M4/04 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2220/30

Abstract: The present disclosure provides a method for removing a coating layer of an electrode plate, an electrode plate comprises a current collector and a coating layer coated on each of at least one surface of the current collector, the method for removing the coating layer of the electrode plate comprises steps of: (I) fixing a region where the coating layer will be removed of the electrode plate by vacuum adsorption from a surface of the current collector opposite to the surface of the current collector on which the region where the coating layer will be removed is present; (II) emitting a laser beam on the coating layer within the region where the coating layer will be removed from a side of the surface of the current collector on which the region where the coating layer will be removed is present, so as to remove the coating layer of the electrode plate within the region where the coating layer will be removed and in turn expose the current collector of the electrode plate corresponding to the region where the coating layer will be removed; and (III) getting rid of a residue of the coating layer generated in the step (II). The region where the coating layer will be removed of the electrode plate is fixed by the vacuum adsorption firstly and then the coating layer within the region where the coating layer will be removed is removed by the laser beam, because the electrode plate is fixed, it can avoid a deformation of the electrode plate during laser removing due to a stress generated in the coating layer which is heated by the laser beam and a residual stress released by the removed coating layer.

公开(公告)号：US20240014525A1

公开(公告)日：2024-01-11

申请号：US18372170

申请日：2023-09-25

Applicant: Ningde Amperex Technology Limited

Inventor： Peipei GUO ,  Ping HE ,  Yejun PENG

IPC: H01M50/567 ,  H01M50/559 ,  H01M50/172 ,  H01M50/152 ,  H01M50/184 ,  H01M50/186

CPC classification number: H01M50/567 ,  H01M50/559 ,  H01M50/172 ,  H01M50/152 ,  H01M50/184 ,  H01M50/186

Abstract: A battery includes a housing, a cover, a sealing member, a connecting member, a cell, and a pole. The pole includes a substrate and a lead-out portion disposed on the substrate, where the lead-out portion includes a first portion, a second portion, and a mounting hole. The second portion is connected to an end of the first portion away from the substrate. The mounting hole is connected to the first portion and the second portion, where an opening of the mounting hole is located in the second portion. In a direction parallel to the substrate, minimum cross-sectional area of the first portion is greater than maximum cross-sectional area of the second portion. The pole has the first portion and the second portion of different cross-sectional areas disposed on the lead-out portion so that the second portion can be more easily riveted and bent against the first portion during riveting.

公开(公告)号：US20240006585A1

公开(公告)日：2024-01-04

申请号：US18467910

申请日：2023-09-15

Applicant: Ningde Amperex Technology Limited

Inventor： Hua WU ,  Yu ZHANG ,  Yi ZHAO ,  Ping HE

IPC: H01M4/139 ,  H01M4/70 ,  H01M50/595 ,  H01M50/586 ,  H01M4/04

CPC classification number: H01M4/139 ,  H01M4/70 ,  H01M50/595 ,  H01M50/586 ,  H01M4/04 ,  H01M2004/021

Abstract: An electrode plate includes a current collector and membranes disposed on a surface of the current collector, where at least one of the membranes is provided with a tab slot, the tab slot is apart from an edge of the electrode plate along a width direction, and the tab slot exposes the surface of the current collector; the membrane provided with the tab slot is provided with a notch connecting to the tab slot on a side, where the notch runs through the current collector along a direction perpendicular to the membrane, and the notch has an arc-shaped surface. The risk of a short circuit in the electrode assembly having the electrode plate can be decreased and safety performance of the battery can be improved.

公开(公告)号：US20170250392A1

公开(公告)日：2017-08-31

申请号：US15436679

申请日：2017-02-17

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

CPC classification number: H01M2/14 ,  H01M2/1673 ,  H01M2/263 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/139 ,  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：US20240291040A1

公开(公告)日：2024-08-29

申请号：US18623461

申请日：2024-04-01

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Peipei GUO ,  Yi ZHAO ,  Ping HE ,  Hongxin FANG ,  Wenqiang CHENG

IPC: H01M10/0585 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/528 ,  H01M50/536 ,  H01M50/538

CPC classification number: H01M10/0585 ,  H01M10/0409 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/528 ,  H01M50/536 ,  H01M50/538 ,  H01M2220/20

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. A winding formation system of the secondary battery cell 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：US20240243391A1

公开(公告)日：2024-07-18

申请号：US18622128

申请日：2024-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Ning LIU ,  Kun YAN ,  Wei ZHAO ,  Ping HE

IPC: H01M50/103 ,  H01M50/119 ,  H01M50/133

CPC classification number: H01M50/103 ,  H01M50/119 ,  H01M50/133

Abstract: A battery shell includes a first housing. The first housing is configured to be formed by winding a sheet around a first axis. The sheet includes a first end portion and a second end portion. The first housing includes a first sidewall. The first sidewall includes a first flat portion, a first bent portion, and the first end portion. The first sidewall further includes a second flat portion and the second end portion. A wall face of the first flat portion facing away from the first axis is a first wall face. A wall face of the second flat portion facing away from the first axis is a second wall face. As viewed along a thickness direction perpendicular to the second flat portion, a distance between the first wall face and the second wall face is less than a thickness of the second flat portion.

公开(公告)号：US20170170454A1

公开(公告)日：2017-06-15

申请号：US15444179

申请日：2017-02-27

Applicant: DONGGUAN AMPEREX TECHNOLOGY LIMITED ,  NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Bin ZHANG ,  Ping HE ,  Yi ZHAO ,  Hongxin FANG ,  Wenqiang CHENG

IPC: H01M4/04 ,  B23K26/352 ,  B23K26/00 ,  H01M2/26 ,  H01M10/0525

CPC classification number: H01M4/0471 ,  B08B3/00 ,  B08B7/0042 ,  B08B7/04 ,  B23K26/352 ,  H01M2/26 ,  H01M4/04 ,  H01M4/139 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2220/30

Abstract: The present disclosure provides a method for removing a coating layer of an electrode plate, an electrode plate comprises a current collector and a coating layer coated on each of at least one surface of the current collector, the method for removing the coating layer of the electrode plate comprises steps of: (I) wetting the coating layer of the electrode plate within the region where the coating layer will be removed by using a solvent; (II) emitting a laser beam on the coating layer of the electrode plate within the region where the coating layer will be removed to make the solvent which wets the coating layer of the electrode plate within the region where the coating layer will be removed vaporized, so as to remove the coating layer of the electrode plate within the region where the coating layer will be removed and in turn expose the current collector of the electrode plate corresponding to the region where the coating layer will be removed; and (III) getting rid of a residue of the coating layer generated in the step (II). The coating layer of the electrode plate within the region where the coating layer will be removed is wetted in advance by using the solvent, after the laser beam is emitted on the wetted electrode plate, the solvent existing in the electrode plate absorbs the energy of the laser beam so as to be instantaneously vaporized, thereby generating a strong transient pressure, the particles of the coating layer are peeled off from the current collector under the action of the strong pressure, so as to remove the particles of the coating layer, so that it will not damage the electrode plate, thereby avoiding the deformation of the electrode plate.