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1. 发明公开

EP4432375A1 BATTERY CELL, BATTERY AND ELECTRIC DEVICE 审中-实审
公开(公告)号：EP4432375A1
公开(公告)日：2024-09-18
申请号：EP23880895.0
申请日：2023-01-31
申请人： Contemporary Amperex Technology Co., Limited
发明人： XUE, Qingrui , ZHANG, Zige , LI, Wei , ZHANG, Yu , ZHAO, Zhengyuan , ZHANG, Jinsong
IPC分类号： H01M4/02 , H01M50/533 , H01M50/538
摘要： Embodiments of this application provide a battery cell, a battery, and an electric device. The electrode assembly (22) includes a body portion (251) and a lead-out portion (252) that are disposed in a first direction (X), the body portion (251) being electrically connected to an electrode terminal (241) via the lead-out portion (252). The lead-out portion (252) includes a tab portion (253) and a conductive structure (254). A first end of the conductive structure (254) is welded to the tab portion (253) to form a welded zone (255), a second end of the conductive structure (254) is connected to the electrode terminal (241), and the conductive structure (254) extends along a direction leaving the body portion (251). A melting zone (26) is provided between the welded zone (255) and the body portion (251). The technical solution of this application can reduce the probability of thermal runaway of batteries.

2. 发明公开

EP3916845A1 ELECTRODE SHEET, ELECTROCHEMICAL DEVICE, AND DEVICE 有权转让
公开(公告)号：EP3916845A1
公开(公告)日：2021-12-01
申请号：EP19934632.1
申请日：2019-12-13
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Wei , LI, Jing , XUE, Qingrui , ZHANG, Zige , ZHANG, Yang , YANG, Xianwei
IPC分类号： H01M4/13 , H01M4/66 , H01M4/62 , H01M4/72 , H01M10/0525
摘要： 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. The current collector is a composite current collector, and a conductive primer coating layer containing a binder and a conductive material is separately provided between the current collector and the electrode active material layer in the film zone of the current collector and on the surface of the extension zone of the current collector.

3. 发明公开

EP3796436A1 ELECTRODE PLATE, ELECTROCHEMICAL APPARATUS, BATTERY MODULE, BATTERY PACK, AND DEVICE 审中-公开
公开(公告)号：EP3796436A1
公开(公告)日：2021-03-24
申请号：EP19906208.4
申请日：2019-11-11
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Jing , XUE, Qingrui , ZHANG, Zige , LI, Wei , YANG, Xianwei
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.

4. 发明公开

EP3796423A1 ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, BATTERY MODULE, BATTERY PACK, AND APPARATUS 有权转让
公开(公告)号：EP3796423A1
公开(公告)日：2021-03-24
申请号：EP19902406.8
申请日：2019-11-20
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Jing , LI, Wei , XUE, Qingrui , ZHANG, Zige , YANG, Xianwei
IPC分类号： H01M4/02 , H01M4/04 , H01M4/62 , H01M4/66
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 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; and a conductive primer layer containing a conductive material and a binder is further disposed between the current collector and the electrode active material layer, the binder in the conductive primer layer containing an acrylic based/acrylate based water-dispersible binder. The electrode plate of this application has good workability, and the electrochemical apparatus containing the electrode plate has a high energy density and a good electrical performance and long-term reliability.

5. 发明公开

EP3742529A1 POSITIVE ELECTRODE SHEET AND ELECTROCHEMICAL APPARATUS 有权转让
公开(公告)号：EP3742529A1
公开(公告)日：2020-11-25
申请号：EP19883827.8
申请日：2019-11-15
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Wei , XUE, Qingrui , LI, Jing , ZHANG, Zige , XU, Jianbao
IPC分类号： H01M4/131
摘要： 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 Li 1+x Ni a Co b Me (1-a-b) O 2 , wherein -0.1≤x≤0.2, 0.6≤a

6. 发明公开

EP3637515A1 SECONDARY BATTERY AND ELECTRODE MEMBER THEREOF 有权转让
公开(公告)号：EP3637515A1
公开(公告)日：2020-04-15
申请号：EP19153878.4
申请日：2019-01-28
申请人： Contemporary Amperex Technology Co., Limited
发明人： LIANG, Chengdu , ZHANG, Zige , XUE, Qingrui , LI, Wei , LI, Jing , WANG, Pengxiang
IPC分类号： H01M4/66
摘要： The present invention provides a secondary battery and an electrode member thereof. The electrode member comprises an insulating substrate, a first conducting layer and an active material layer; the first conducting layer is provided on a surface of the insulating substrate, the active material layer is provided at a side of the first conducting layer away from the insulating substrate; the first conducting layer is provided with a stripe-shape groove extending in a height direction, the stripe-shape groove is used for releasing stress of the first conducting layer. The secondary battery comprises an electrode assembly, the electrode assembly comprises the electrode member.

7. 发明公开

EP3637504A1 SECONDARY BATTERY AND ELECTRODE PLATE THEREOF 有权转让
公开(公告)号：EP3637504A1
公开(公告)日：2020-04-15
申请号：EP19153877.6
申请日：2019-01-28
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Wei , ZHANG, Zige , LIANG, Chengdu , XUE, Qingrui , LI, Jing , WANG, Pengxiang
IPC分类号： H01M2/26 , H01M4/66 , H01M10/052
摘要： The present invention provides a secondary battery and an electrode plate thereof. The electrode plate comprises a current collector and an active material layer. The current collector comprises an insulating layer and a first conducting layer provided on a surface of the insulating layer; the first conducting layer has a main portion and a protruding portion connected with the main portion, the main portion is coated with the active material layer, the protruding portion is not coated with the active material layer. The electrode plate further comprises a second conducting layer, the second conducting layer comprises a first portion, the first portion is provided on a surface of the protruding portion away from the insulating layer. The secondary battery comprises an electrode assembly, the electrode assembly comprises the electrode plate.

8. 发明公开

EP4425586A1 ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE 审中-实审
公开(公告)号：EP4425586A1
公开(公告)日：2024-09-04
申请号：EP23866593.9
申请日：2023-01-17
申请人： Contemporary Amperex Technology Co., Limited
发明人： WU, Kai , XUE, Qingrui , LI, Wei , ZHANG, Zige , ZHANG, Yu , ZHAO, Zhengyuan
IPC分类号： H01M4/02 , H01M4/13 , H01M10/0585
摘要： Embodiments of this application provide an electrode assembly, a battery cell, a battery, and an electric device. The electrode assembly includes a negative electrode plate, a positive electrode plate, and a separator stacked along a first direction, the separator being used to separate the positive electrode plate and the negative electrode plate; where in a second direction, size of the negative electrode plate is larger than size of the positive electrode plate, and an orthographic projection of the positive electrode plate on a plane in which a surface of the negative electrode plate is located does not extend beyond the negative electrode plate, where the second direction is a width direction of the negative electrode plate, and the first direction is perpendicular to the second direction; and in the first direction, burrs on a negative electrode current collector of the negative electrode plate have a size of L1, a negative electrode active substance layer of the negative electrode plate has a size of L2, and the separator has a size of L3, and in the second direction, a difference is L4 between a minimum distance from a middle position of the negative electrode plate to an end of the negative electrode plate and a minimum distance from a middle position of the positive electrode plate to an end of the positive electrode plate; where L 1, L2, L3, and L4 satisfy L1 ≤ L2 + L3 + L4. The technical solution of this application can reduce the risk of short circuit in the battery.

9. 发明公开

EP4421971A1 ELECTRODE SHEET OF BATTERY, ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE 审中-实审
公开(公告)号：EP4421971A1
公开(公告)日：2024-08-28
申请号：EP23864125.2
申请日：2023-01-09
申请人： Contemporary Amperex Technology Co., Limited
发明人： XUE, Qingrui , ZHANG, Zige , LI, Wei , ZHANG, Yu , ZHAO, Zhengyuan , ZHANG, Jinsong
IPC分类号： H01M50/533 , H01M4/13
摘要： Embodiments of this application provide a battery electrode plate, an electrode assembly, a battery cell, a battery, and an electric device, which can improve battery safety. Specifically, the battery electrode plate according to an embodiment of this application includes a current collector, an active substance layer, and a conductive structure, where the current collector includes a main body portion and a tab portion disposed in a first direction, where the main body portion is covered with the active substance layer and the tab portion is not covered with the active substance layer; a first region of the conductive structure is welded to a portion of the tab portion to form a welding mark zone; and the welding mark zone is at least partially covered with a protective layer.

10. 发明公开

EP4354619A3 ELECTRODE PLATE, ELECTROCHEMICAL APPARATUS, BATTERY MODULE, BATTERY PACK, AND DEVICE 审中-实审
公开(公告)号：EP4354619A3
公开(公告)日：2024-06-12
申请号：EP23220585.6
申请日：2019-11-11
申请人： Contemporary Amperex Technology Co., Limited
发明人： LI, Jing , XUE, Qingrui , ZHANG, Zige , LI, Wei , YANG, Xianwei
IPC分类号： H01M4/66 , H01M4/13 , H01M10/0525 , H01M50/209 , H01M50/249 , H01M4/133 , H01M4/131 , H01M4/525 , H01M4/587
CPC分类号： Y02E60/10 , H01M4/13 , H01M4/587 , H01M4/525 , H01M4/661 , H01M4/662 , H01M4/667 , H01M4/668 , H01M10/0525 , H01M2220/2020130101 , H01M50/209 , H01M50/249 , H01M4/663 , H01M4/131 , H01M4/133 , H01M2220/3020130101 , H01M4/666
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, 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, and 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.

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