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公开(公告)号：US20170170454A1
公开(公告)日：2017-06-15
申请号：US15444179
申请日：2017-02-27
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.
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公开(公告)号：US20170170455A1
公开(公告)日：2017-06-15
申请号：US15444189
申请日：2017-02-27
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.
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公开(公告)号：US20190198824A1
公开(公告)日：2019-06-27
申请号：US16230774
申请日：2018-12-21
发明人： Wenqiang CHENG
IPC分类号： H01M2/02 , H01M10/0525
CPC分类号： H01M2/0267 , H01M2/0287 , H01M10/0525
摘要： 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.
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公开(公告)号：US20170250392A1
公开(公告)日：2017-08-31
申请号：US15436679
申请日：2017-02-17
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.
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公开(公告)号：US20240291040A1
公开(公告)日：2024-08-29
申请号：US18623461
申请日：2024-04-01
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.
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公开(公告)号：US20170120380A1
公开(公告)日：2017-05-04
申请号：US15363925
申请日：2016-11-29
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.
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公开(公告)号：US20240347786A1
公开(公告)日：2024-10-17
申请号：US18757902
申请日：2024-06-28
发明人： Wenqiang CHENG , Kefei WANG
IPC分类号： H01M10/42 , H01M4/02 , H01M4/131 , H01M4/62 , H01M10/0525 , H01M10/0567
CPC分类号： H01M10/4235 , H01M4/131 , H01M4/623 , H01M10/0525 , H01M10/0567 , H01M2004/028
摘要： 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.
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公开(公告)号：US20150280197A1
公开(公告)日：2015-10-01
申请号：US14593656
申请日：2015-01-09
发明人： Junhua ZHAO , Shengwu ZHANG , Yongle CHEN , Hui JIANG , Chaoyu GUAN , Xiaoyan LI , Wenqiang CHENG
IPC分类号： H01M2/16
CPC分类号： H01M2/1686 , H01M2/1653 , H01M2/166 , H01M10/0525
摘要： The present disclosure provides a composite porous separator and an electrochemical device. The composite porous separator comprises: a composite porous substrate; and a composite porous coating coated on at least one surface of the composite porous substrate. The composite porous substrate comprises a filler A and a polymer matrix, the filler A is at least one selected from a group consisting of inorganic particles and organic particles; the composite porous coating comprises a filler B and an adhesive, the filler B is at least one selected from a group consisting of inorganic particles and organic particles. The electrochemical device has the above composite porous separator. The present disclosure improves the thermal stability of the composite porous separator, and improves the anti-deformation capability and the capacity retention rate of the electrochemical device, and further improves the cycle performance and the low temperature dynamic performance of the electrochemical device.
摘要翻译： 本公开提供了一种复合多孔分离器和电化学装置。 复合多孔隔板包括：复合多孔基材; 以及涂覆在所述复合多孔基材的至少一个表面上的复合多孔涂层。 复合多孔基材包括填料A和聚合物基质，填料A为选自无机颗粒和有机颗粒中的至少一种; 复合多孔涂层包括填料B和粘合剂，填料B是选自无机颗粒和有机颗粒中的至少一种。 电化学装置具有上述复合多孔分离器。 本发明改善了复合多孔隔板的热稳定性，提高了电化学装置的抗变形能力和容量保持率，进一步提高了电化学装置的循环性能和低温动态性能。
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公开(公告)号：US20240128518A1
公开(公告)日：2024-04-18
申请号：US18393712
申请日：2023-12-22
发明人： Junliang ZHU , Haibing WANG , Tongming DONG , Wenqiang CHENG , Baohua CHEN , Shufeng WU , Wei YANG , Zhihua QIN , Meina LIN
IPC分类号： H01M10/0587 , H01M10/052 , H01M10/0525 , H01M10/0583 , H01M10/0585 , H01M50/119 , H01M50/121 , H01M50/124
CPC分类号： H01M10/0587 , H01M10/052 , H01M10/0525 , H01M10/0583 , H01M10/0585 , H01M50/119 , H01M50/121 , H01M50/124 , H01M2220/30
摘要： An electrode assembly and a lithium ion electric roll having the same are provided. The electrode assembly includes: a first electrode unit; a first anti-puncture cushion; in which the first electrode unit includes a first electrode sheet, an second electrode sheet, and a separator, the second electrode sheet comprises a second top edge and a second bottom edge along the length direction of the first electrode unit; an edge of the first anti-puncture cushion exceeds the second electrode sheet from the second top edge or the second bottom edge along the length direction of the first electrode unit.
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