-
公开(公告)号：US11769883B2
公开(公告)日：2023-09-26
申请号：US15734469
申请日：2019-11-20
发明人： Chengdu Liang , Jing Li , Wei Li , Qingrui Xue , Zige Zhang , Xianwei Yang
IPC分类号： H01M4/66 , H01M4/13 , H01M4/62 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/667 , H01M4/13 , H01M4/622 , H01M4/625 , H01M4/661 , H01M4/668 , H01M10/0525 , H01M2004/021
摘要： The electrode plate includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein the current collector includes a support layer and a conductive layer, the conductive layer has a single-sided thickness D2 satisfying: 30 nm≤D2≤3 μm; the electrode active material layer is divided into two regions, an inner region and an outer region in a thickness direction of the electrode active material layer, in which the weight percentage of the conductive agent in the inner region of the electrode active material layer is higher than the weight percentage content of the conductive agent in the outer region of the electrode active material layer, and the conductive agent in the inner region of the electrode active material layer includes at least one of a one-dimensional conductive material and a two-dimensional conductive material.
-
公开(公告)号：US11271273B2
公开(公告)日：2022-03-08
申请号：US17137090
申请日：2020-12-29
发明人： Qingrui Xue , Zige Zhang , Miao Jiang , Jing Li , Wei Li , Xianwei Yang
IPC分类号： H01M50/531 , H01M10/058 , H01M50/172 , H01M50/543
摘要： The present application relates to an electrode member, an electrode assembly and a secondary battery. The electrode member comprises an electrode body and a conductive structure that has a first portion having an active material and a second portion extending from the first portion. The second portion comprises a main portion and a transition portion provided between the main portion and the first portion, and a width of the transition portion larger than a width of the main portion. The conductive structure is welded with the second portion and extends along a direction away from the first portion. At least a part of a welding region formed by the second portion and the conductive structure is positioned at the transition portion, thereby avoiding the overcurrent area being significantly reduced by the main portion and ensuring that every position electric current passes through have a sufficient overcurrent area.
-
公开(公告)号：US20210119221A1
公开(公告)日：2021-04-22
申请号：US17134014
申请日：2020-12-24
发明人： Jing LI , Qingrui Xue , Zige Zhang , Wei Li , Xianwei Yang
IPC分类号： H01M4/66 , H01M4/13 , H01M10/0525
摘要： This application relates to the battery field, and specifically, to an electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The electrode plate in 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-side thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, and a conductive primer layer including a conductive material and a bonding agent is further disposed between the current collector and the electrode active material layer. The electrode plate in this application has good machinability. An electrochemical apparatus including the electrode plate has high energy density, good electrical performance, and long-term reliability.
-
公开(公告)号：US20200235368A1
公开(公告)日：2020-07-23
申请号：US16732180
申请日：2019-12-31
发明人： Qingrui Xue , Zige Zhang , Miao Jiang , Jing Li , Wei Li , Xianwei Yang
IPC分类号： H01M2/26 , H01M2/06 , H01M2/30 , H01M10/058
摘要： The present disclosure relates to the field of energy storage device, and particularly relates to an electrode member, an electrode assembly and a secondary battery. The electrode member comprises an electrode body and a conductive structure. The conducting layer comprises a first portion having an active material and a second portion extending from the first portion; the second portion comprises a main portion and a transition portion, the transition portion is provided between the main portion and the first portion, and a width of the transition portion is larger than a width of the main portion. The conductive structure is welded with the second portion and extends along a direction away from the first portion, and at least a part of a welding region formed by the second portion and the conductive structure is positioned at the transition portion. The present disclosure can avoid the overcurrent area being significantly reduced caused by the main portion, ensure that every position the electric current passing through has a sufficient overcurrent area, and improve the safety performance of the secondary battery.
-
公开(公告)号：US12051811B2
公开(公告)日：2024-07-30
申请号：US17112749
申请日：2020-12-04
发明人： Jing Li , Qingrui Xue , Zige Zhang , Wei Li , Xianwei Yang
IPC分类号： H01M4/66
摘要： This application relates to an electrode plate that includes a current collector and an electrode active material layer disposed on at least one surface of the current collector. The current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer. A single-side thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, a conductive primer layer including a conductive material and a bonding agent is further disposed between the current collector and the electrode active material layer. The bonding agent in the conductive primer layer includes a water-based bonding agent. The electrode plate in this application has good machinability. An electrochemical apparatus including the electrode plate has high energy density, good electrical performance, and long-term reliability.
-
公开(公告)号：US20210151772A1
公开(公告)日：2021-05-20
申请号：US17132548
申请日：2020-12-23
发明人： Jing LI , Qingrui Xue , Zige Zhang , Wei Li , Xianwei Yang
IPC分类号： H01M4/66 , H01M4/62 , H01M10/0525 , H01M4/13
摘要： This application relates to an electrode plate that includes a current collector and an electrode active material layer disposed on at least one surface of the current collector. The current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer. A single-side thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm. The electrode active material layer includes an electrode active material, a binder, and a conductive agent unevenly distributed in a thickness direction of the electrode active material layer. A weight percentage of the conductive agent in an interior area of the electrode active material layer is higher than that in an exterior area of the electrode active material layer.
-
公开(公告)号：US11804604B2
公开(公告)日：2023-10-31
申请号：US17139124
申请日：2020-12-31
发明人： Jing Li , Qingrui Xue , Wei Li , Zige Zhang , Yang Zhang , Xianwei Yang
CPC分类号： H01M4/667 , H01M4/133 , H01M4/134 , H01M4/602 , H01M4/623 , H01M4/661 , H01M10/0525 , H01M2004/028
摘要： 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.
-
公开(公告)号：US11664486B2
公开(公告)日：2023-05-30
申请号：US16452534
申请日：2019-06-26
发明人： Qingrui Xue , Wei Li , Jing Li , Zige Zhang , Xianwei Yang
IPC分类号： H01M4/131 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/0525 , H01M4/02 , H01M4/587 , H01M10/058 , H01M10/42 , H01M50/586
CPC分类号： H01M4/131 , H01M4/505 , H01M4/525 , H01M4/587 , H01M4/622 , H01M10/058 , H01M10/0525 , H01M10/4235 , H01M50/586 , H01M2004/028
摘要： This application 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 material coated on at least one surface of the positive electrode current collector, and wherein an 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 wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.
-
公开(公告)号：US20210119303A1
公开(公告)日：2021-04-22
申请号：US17137090
申请日：2020-12-29
发明人： Qingrui XUE , Zige Zhang , Miao Jiang , Jing Li , Wei Li , Xianwei Yang
IPC分类号： H01M50/531 , H01M10/058 , H01M50/172 , H01M50/543
摘要： The present disclosure relates to an electrode member, an electrode assembly and a secondary battery. The electrode member comprises an electrode body and a conductive structure that has a first portion having an active material and a second portion extending from the first portion. The second portion comprises a main portion and a transition portion, the transition portion provided between the main portion and the first portion, and a width of the transition portion larger than a width of the main portion. The conductive structure is welded with the second portion and extends along a direction away from the first portion. At least a part of a welding region formed by the second portion and the conductive structure is positioned at the transition portion, thereby avoiding the overcurrent area being significantly reduced by the main portion and ensuring that every position electric current passes through have a sufficient overcurrent area.
-
公开(公告)号：US11777103B2
公开(公告)日：2023-10-03
申请号：US17132548
申请日：2020-12-23
发明人： Jing Li , Qingrui Xue , Zige Zhang , Wei Li , Xianwei Yang
IPC分类号： H01M4/66 , H01M4/13 , H01M4/62 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/667 , H01M4/13 , H01M4/622 , H01M4/625 , H01M4/661 , H01M4/663 , H01M4/668 , H01M10/0525 , H01M2004/021
摘要： This application relates to an electrode plate that includes a current collector and an electrode active material layer disposed on at least one surface of the current collector. The current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer. A single-side thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm. The electrode active material layer includes an electrode active material, a binder, and a conductive agent unevenly distributed in a thickness direction of the electrode active material layer. A weight percentage of the conductive agent in an interior area of the electrode active material layer is higher than that in an exterior area of the electrode active material layer.
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.015 秒)
