公开(公告)号：US20170170455A1

公开(公告)日：2017-06-15

申请号：US15444189

申请日：2017-02-27

申请人： DONGGUAN AMPEREX TECHNOLOGY LIMITED ,  NINGDE AMPEREX TECHNOLOGY LIMITED

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

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

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

摘要： 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：US20170170454A1

公开(公告)日：2017-06-15

申请号：US15444179

申请日：2017-02-27

申请人： DONGGUAN AMPEREX TECHNOLOGY LIMITED ,  NINGDE AMPEREX TECHNOLOGY LIMITED

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

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

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

摘要： 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：US20240291040A1

公开(公告)日：2024-08-29

申请号：US18623461

申请日：2024-04-01

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

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

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

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

摘要： 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：US20170120380A1

公开(公告)日：2017-05-04

申请号：US15363925

申请日：2016-11-29

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

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

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

CPC分类号： 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

摘要： 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：US20240006585A1

公开(公告)日：2024-01-04

申请号：US18467910

申请日：2023-09-15

申请人： Ningde Amperex Technology Limited

发明人： Hua WU ,  Yu ZHANG ,  Yi ZHAO ,  Ping HE

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

CPC分类号： H01M4/139 ,  H01M4/70 ,  H01M50/595 ,  H01M50/586 ,  H01M4/04 ,  H01M2004/021

摘要： 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

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

发明人： Peipei GUO ,  Yi ZHAO ,  Ping HE ,  Wenqiang CHENG

IPC分类号： H01M2/26 ,  H01M2/14 ,  H01M4/36 ,  H01M4/04 ,  H01M10/0525

CPC分类号： H01M2/14 ,  H01M2/1673 ,  H01M2/263 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/139 ,  H01M10/0525

摘要： 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：US20240356170A1

公开(公告)日：2024-10-24

申请号：US18758105

申请日：2024-06-28

申请人： Dongguan Amperex Technology Limited

发明人： Fang LV ,  Yi ZHAO

IPC分类号： H01M50/533 ,  H01M50/54

CPC分类号： H01M50/533 ,  H01M50/54

摘要： A battery including an electrode plate assembly, where the electrode plate assembly includes an electrode plate and a first tab. The electrode plate includes a current collector, where the current collector includes a first conductive material layer, an insulating material layer, and a second conductive material layer that are stacked. The current collector includes a main body part and a folded part; the first conductive material layer includes a first main body region and a first folded region; the second conductive material layer includes a second main body region and a second folded region; and along a thickness direction of the main body part, at least a part of the second folded region and the first main body region are located on a first side of the main body part. The first tab is electrically connected to both the first main body region and the second folded region.