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公开(公告)号：US11981150B1
公开(公告)日：2024-05-14
申请号：US18220781
申请日：2023-07-11
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chao Guo , Yinyong Qiao
IPC: H01M4/04 , B41J2/435 , B41J2/44 , B41J2/46 , B41J2/47 , B41J2/475 , B41J3/413 , B41J11/00 , B41J15/02 , B41J15/04 , B41J29/02 , B65H20/02 , H01M10/04
CPC classification number: B41J2/46 , B41J2/435 , B41J2/442 , B41J2/471 , B41J2/4753 , B41J3/413 , B41J11/005 , B41J15/02 , B41J15/046 , B41J29/02 , B65H20/02 , H01M4/04 , B65H2404/143 , B65H2404/19 , H01M10/0404 , H01M10/045
Abstract: This application discloses processing equipment, electrode plate processing equipment, battery processing equipment, and a sheet processing method. The processing equipment includes a rotation roller and a laser assembly. The rotation roller is rotatable around a first axis. An outer peripheral surface of the rotation roller around the first axis is configured to allow winding of a sheet. The outer peripheral surface of the rotation roller is able to move synchronously with the sheet around the first axis. The laser assembly is disposed on the rotation roller and able to rotate with the rotation roller. The laser assembly is configured to drive a laser beam to be emitted toward the sheet, and further configured to drive the laser beam to move linearly and/or oscillate around a second axis that intersects the first axis.
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公开(公告)号：US12085335B2
公开(公告)日：2024-09-10
申请号：US18201647
申请日：2023-05-24
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Yinxiang Lin , Peng Jin , Chao Guo , Nengwu Liao , Lijun Li , Xuefeng Kang
CPC classification number: F26B3/04 , F26B25/06 , H01M4/0409 , H01M4/0471
Abstract: The present application provides an oven drying apparatus and a coating device. The oven drying apparatus comprises an oven drying chamber and a heating assembly. The oven drying chamber is equipped with a first oven drying side having a plurality of first air inlet portions for fluid medium to enter the oven drying chamber. The heating assembly is disposed on the first oven drying side. The first oven drying side is further provided with at least one air return portion provided between two adjacent first air inlet portions, and the air return portion being configured for fluid medium in the oven drying chamber to be discharged from the oven drying chamber. The arrangement of an air return portion between two first air inlet portions can discharge fluid medium between the two first air inlet portions and take away the heat, thus avoiding accumulation of heat between the two first air inlet portions.
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公开(公告)号：US10818961B2
公开(公告)日：2020-10-27
申请号：US15918866
申请日：2018-03-12
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Huihui Liu , Jirong Li , Chao Guo , Jialong Wu , Kang Wang
IPC: H01M10/0525 , H01M4/62 , H01M4/525 , C08L9/02 , C08L33/24 , C08L33/06 , H01M4/505 , H01M4/1391 , H01M4/131 , H01M4/04 , H01M4/66 , H01M4/02
Abstract: The present disclosure provides an anode electrode slurry suspending agent, an anode electrode plate and an energy storage device, the anode electrode slurry suspending agent has a structural formula composed of a main chain containing carbon and a side chain, the side chain comprises a first side chain R1 and a second side chain R2; the first side chain R1 contains —R11—CONH2, the second side chain R2 contains —(C═O)OR21 or —O(C═O)R22, the anode electrode slurry suspending agent can significantly improve coating speed of the anode electrode slurry and can ensure that there is no drying-cracking phenomenon of the anode electrode film at the same time, thereby improving productivity and quality rate of coating process of the anode electrode plate and in turn significantly improving production capacity of the energy storage device.
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公开(公告)号：US20200161659A1
公开(公告)日：2020-05-21
申请号：US16426867
申请日：2019-05-30
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Wei Li , Haihao Shi , Huihui Liu , Chao Jin , Jianbao Xu , Shisong Li , Chao Guo
Abstract: The present invention relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a positive active material layer, and a binding layer disposed between the current collector and the positive active material layer, the binding layer comprising a polymer material, a conductive material, and an inorganic filler, wherein the polymer material comprises a binding layer matrix and the binding layer matrix is an oil-dispersible polymer material having a solubility in NMP at 130 ° C. for 5 minutes, which is 30% or less of the solubility of PVDF under the same conditions. The positive electrode plate can improve the safety performance of the electrochemical device (for example, a capacitor, a primary battery, a secondary battery, or the like) under abnormal conditions such as nailing penetration.
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Patent Agency Ranking
5.发明申请公开(公告)号：US20180287198A1
公开(公告)日：2018-10-04
申请号：US15918866
申请日：2018-03-12
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Huihui LIU , Jirong Li , Chao Guo , Jialong Wu , Kang Wang
CPC classification number: H01M10/0525 , C08L9/02 , C08L33/06 , C08L33/24 , C08L2203/20 , H01M4/0404 , H01M4/131 , H01M4/1391 , H01M4/505 , H01M4/525 , H01M4/622 , H01M4/625 , H01M4/661 , H01M2004/027 , H01M2004/028
Abstract: The present disclosure provides an anode electrode slurry suspending agent, an anode electrode plate and an energy storage device, the anode electrode slurry suspending agent has a structural formula composed of a main chain containing carbon and a side chain, the side chain comprises a first side chain R1 and a second side chain R2; the first side chain R1 contains —R11—CONH2, the second side chain R2 contains —(C═O)OR21 or —O(C═O)R22, the anode electrode slurry suspending agent can significantly improve coating speed of the anode electrode slurry and can ensure that there is no drying-cracking phenomenon of the anode electrode film at the same time, thereby improving productivity and quality rate of coating process of the anode electrode plate and in turn significantly improving production capacity of the energy storage device.
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公开(公告)号：US11848436B2
公开(公告)日：2023-12-19
申请号：US18184010
申请日：2023-03-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Shaojun Qiu , Nengwu Liao , Chao Guo , Tiefeng Wu
IPC: H01M4/04 , H01M50/533 , B08B5/04 , B23K26/16 , B23K26/38
CPC classification number: H01M4/04 , B08B5/04 , B23K26/16 , B23K26/38 , H01M50/533
Abstract: Disclosed is method and device for forming an electrode plate. The method includes: performing tab cutting on a substrate so that the substrate forms a body portion, an edge portion connecting to the body portion, and a plurality of tabs that connect to the body portion but are separated from the edge portion; and performing edge portion cutting on the substrate to separate the edge portion from the body portion. The electrode plate is formed in two steps. First, the tab and the edge portion are separated, so that in the process of cutting, impact of vibration of the edge portion on the tab is small, greatly reducing the risk of deformation of the tab caused by vibration of the edge portion and damage to the tab caused by being pulled by the edge portion. Second, edge portion cutting separates the edge portion from the body portion.
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公开(公告)号：US11777072B2
公开(公告)日：2023-10-03
申请号：US17137047
申请日：2020-12-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Zhiyang Wu , Wang Zhang , Shisong Li , Chao Guo , Chao Yang
CPC classification number: H01M4/0435 , B05C11/025
Abstract: This application discloses an electrode plate rolling apparatus and an electrode plate rolling method that are configured to roll an electrode plate. The electrode plate includes a coated region and an uncoated region. The electrode plate rolling apparatus includes a roller group, a heating part, and a cooling part. The heating part is configured to heat the electrode plate, and the cooling part is configured to cool the electrode plate. The heating part further includes an extension assembly, and the extension assembly can extend the uncoated region when the heating part heats the electrode plate. The electrode plate passes through the cooling part after passing through the heating part. The heating part and the cooling part are configured to reduce a difference between an extensibility parameter of the uncoated region and an extensibility parameter of the coated region.
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公开(公告)号：US11211610B2
公开(公告)日：2021-12-28
申请号：US16426867
申请日：2019-05-30
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Wei Li , Haihao Shi , Huihui Liu , Chao Jin , Jianbao Xu , Shisong Li , Chao Guo
Abstract: The present application relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a positive active material layer, and a binding layer disposed between the current collector and the positive active material layer, the binding layer comprising a polymer material, a conductive material, and an inorganic filler, wherein the polymer material comprises a binding layer matrix and the binding layer matrix is an oil-dispersible polymer material having a solubility in NMP at 130° C. for 5 minutes, which is 30% or less of the solubility of PVDF under the same conditions. The positive electrode plate can improve the safety performance of the electrochemical device (for example, a capacitor, a primary battery, a secondary battery, or the like) under abnormal conditions such as nailing penetration.
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公开(公告)号：US11050053B2
公开(公告)日：2021-06-29
申请号：US16422872
申请日：2019-05-24
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Wei Li , Haihao Shi , Huihui Liu , Chao Jin , Tianyi Gao , Jianbao Xu , Shisong Li , Chao Guo
Abstract: The present invention relates to a battery, comprising a positive electrode plate, a separator and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active materials on at least one surface of the positive electrode current collector in which the underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material, and a first conductive material and in which the upper positive active material layer comprises a second positive active material, a second polymer material, and a second conductive material and the first polymer material comprises an oil-dispersible polymer material having a solubility in NMP at 130° C. for 5 minutes, which is 30% or less of the solubility of PVDF under the same conditions. The battery exhibits good safety performance and improved electrical performance.
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