公开(公告)号：US20190198824A1

公开(公告)日：2019-06-27

申请号：US16230774

申请日：2018-12-21

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Wenqiang CHENG

IPC: H01M2/02 ,  H01M10/0525

CPC classification number: H01M2/0267 ,  H01M2/0287 ,  H01M10/0525

Abstract: The present application relates to an electrochemical device and a method for manufacturing the same. The electrochemical device includes: a first outer case defining an accommodating chamber therein; an electrode assembly accommodated in the accommodating chamber of the first outer case; and a second outer case including a heat shrinkable wrapping layer, the first outer case being wrapped in the heat shrinkable wrapping layer.

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：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.

公开(公告)号：US20170120380A1

公开(公告)日：2017-05-04

申请号：US15363925

申请日：2016-11-29

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

IPC: B23K26/142 ,  B23K26/40 ,  B23K26/082 ,  H01M4/139 ,  B23K26/70 ,  H01M10/0525 ,  H01M4/04 ,  B08B7/00 ,  B23K26/08

CPC classification number: B23K26/142 ,  B08B7/00 ,  B08B7/0028 ,  B08B7/0042 ,  B23K26/082 ,  B23K26/0846 ,  B23K26/40 ,  B23K26/703 ,  B23K2101/36 ,  B23K2103/166 ,  G02B27/09 ,  H01M4/0471 ,  H01M4/139 ,  H01M10/0525

Abstract: A device for removing a coating layer of an electrode plate of a lithium-ion battery comprises a conveying system (1) for conveying an electrode plate (6) and a laser system (2), the laser system comprises at least one laser emitting head (21) for emitting a laser beam and projecting the laser beam onto the electrode plate and a beam shaping mechanism (22) for homogenizing energy of the laser beam emitted from the laser emitting head, the laser emitting head and the beam shaping mechanism are electrically connected. In the device for removing the coating layer of the electrode plate of the lithium-ion battery, the beam shaping mechanism is provided, energy of the laser beam can be homogenized, neither damages a foil of the electrode plate so that welding quality of the electrode tab is promoted, nor results in remaining of the coating layer so that the removing quality is promoted, and the energy can be effectively utilized, thereby realizing maximum utilization of the energy of the laser.

公开(公告)号：US20240347786A1

公开(公告)日：2024-10-17

申请号：US18757902

申请日：2024-06-28

Applicant: Ningde Amperex Technology Limited

Inventor： Wenqiang CHENG ,  Kefei WANG

IPC: H01M10/42 ,  H01M4/02 ,  H01M4/131 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567

CPC classification number: H01M10/4235 ,  H01M4/131 ,  H01M4/623 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/028

Abstract: An electrochemical apparatus, including a positive electrode. The positive electrode includes a positive current collector and a positive electrode mixture layer formed on at least one surface of the positive current collector. The positive electrode mixture layer satisfies a relation: F1/F2≥5, where a cohesive force of the positive electrode mixture layer at an initial test temperature of 25° C. is F1 N/m, and a cohesive force of the positive electrode mixture layer treated at 130° C. and then cooled to 25° C. is F2 N/m. The above design not only sufficiently improves safety performance of the electrochemical apparatus at high pressure and high temperature, but also effectively reduces the voltage drop.

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.