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公开(公告)号：US20220093932A1
公开(公告)日：2022-03-24
申请号：US17540263
申请日：2021-12-02
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Wei LI , Jing LI , Qingrui XUE , Zige ZHANG , Yang ZHANG , Xianwei YANG
Abstract: This application relates to an electrode plate, an electrochemical apparatus, and an apparatus thereof. The electrode plate of this application includes a current collector, an electrode active material layer provided on at least one surface of the current collector, and an electrical connection member electrically connected to the current collector. The electrode active material layer is provided on a main body portion of the current collector in a zone referred to as a film zone, the electrical connection member and the current collector are welded and connected at an edge of the current collector, at a welding zone referred to as an transfer welding zone and a transition zone is referred to as an extension zone, where the transition zone is of the current collector between the film zone and the transfer welding zone, and is coated with no electrode active material layer.
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公开(公告)号：US20220037669A1
公开(公告)日：2022-02-03
申请号：US17501902
申请日：2021-10-14
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jing LI , Qingrui XUE , Wei LI , Zige ZHANG , Yang ZHANG , Yang LU
IPC: H01M4/66 , H01M10/0525 , H01M4/13
Abstract: This application relates to the battery field, and specifically, to an electrode plate, an electrochemical device, and an apparatus. The electrode plate of this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, the support layer is made of a polymer material or a polymer composite material, and a thickness D1 of the support layer satisfies 1 μm≤D1≤30 μm; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent.
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公开(公告)号：US20210151769A1
公开(公告)日：2021-05-20
申请号：US17139124
申请日：2020-12-31
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jing LI , Qingrui XUE , Wei LI , Zige ZHANG , Yang ZHANG , Xianwei YANG
Abstract: The present application relates to the field of battery, in particular to a positive electrode piece, an electrochemical device and an apparatus. The positive electrode piece of the present application includes a current collector and an electrode active material layer arranged on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer arranged on at least one surface of the support layer. The thickness D2 of one side of the conductive layer D2 satisfies 30 nm≤D2≤3 μm, the material of the conductive layer is aluminum or aluminum alloy, and the density of the conductive layer is 2.5 g/cm3 to 2.8 g/cm3, and a primer layer containing a conductive material and a binder is also arranged between the current collector and the electrode active material layer.
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公开(公告)号：US20210013513A1
公开(公告)日：2021-01-14
申请号：US16969475
申请日：2019-11-15
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Wei LI , Qingrui XUE , Jing LI , Zige ZHANG , Jianbao XU
IPC: H01M4/62 , H01M4/66 , H01M4/36 , H01M4/137 , H01M4/131 , H01M4/134 , H01M4/525 , H01M4/505 , H01M4/133 , H01M10/0525
Abstract: This application relates to a positive electrode plate and an electrochemical device. The positive electrode plate comprises a metal current collector, a positive electrode active material layer and a safety coating disposed between the metal current collector and the positive electrode active material layer; the safety coating comprises a polymer matrix, a conductive material and an inorganic filler; the positive electrode active material layer comprises Li1+xNiaCobMe(1−a−b)O2, wherein −0.1≤x≤0.2, 0.6≤a
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