-
公开(公告)号：EP4383435A1
公开(公告)日：2024-06-12
申请号：EP22866147.6
申请日：2022-05-20
发明人： GUO, Suogang , FU, Chenghua , YE, Yonghuang , CHANG, Wen
IPC分类号： H01M50/40 , H01M50/466 , H01M10/0587
CPC分类号： Y02E60/10 , Y02P70/50 , H01M10/0587 , H01M50/466 , H01M10/052 , H01M50/489 , H01M50/457 , H01M50/40 , H01M10/0525 , H01M50/449 , H01M10/04 , H01M10/0431 , H01M10/0436 , H01M50/491
摘要： Provided in the embodiment of the present application are an electrode assembly, a battery cell, a battery, and an electric apparatus. The electrode assembly comprises a positive electrode plate, a negative electrode plate, and a separation assembly, wherein the separation assembly is configured to separate the positive electrode plate from the negative electrode plate. The separation assembly comprises a substrate area and a reinforcing area connected to the substrate area, a thickness of the reinforcing area being greater than a thickness of the substrate area. At least part of the reinforcing area is located between the positive electrode plate and negative electrode plate adjacent to each other. The reinforcing area may be configured to correspond to a position where the negative electrode plate is prone to lithium precipitation. In this way, when lithium precipitation occurs on the negative electrode plate, the reinforcing area can effectively separate the positive electrode plate from the negative electrode plate, thereby reducing the risk of lithium dendrites passing through the separation assembly, prolonging the service life, and improving the safety. Compared with the reinforcing area, the substrate area may have a relatively small thickness, so that the amount of separation assemblies can be reduced, the cost is reduced, and energy density of the electrode assembly is increased.
-
公开(公告)号：EP4432416A1
公开(公告)日：2024-09-18
申请号：EP23794737.9
申请日：2023-02-27
发明人： CHANG, Wen , FU, Chenghua , GUO, Suogang , YE, Yonghuang , ZHU, Chang , ZHANG, Yan , HAN, Wenge
IPC分类号： H01M10/058 , H01M10/0525
CPC分类号： Y02E60/10 , Y02P70/50 , H01M10/0587 , H01M4/02 , H01M10/0525 , H01M10/058
摘要： Disclosed in the present application are an electrode assembly, a battery cell, a battery and an electric device. The electrode assembly comprises a negative electrode plate (20), a positive electrode plate (10), and a separator (30) arranged between the negative electrode plate (20) and the positive electrode plate (10), wherein the negative electrode plate (20), the positive electrode plate (10) and the separator (30) together form the electrode assembly (1) about a winding axis. The negative electrode plate (20) is a continuous negative electrode plate, and extends from a winding start end to a winding tail end in a winding direction. The positive electrode plate (10) comprises a continuous positive electrode plate arranged in the winding direction, and a single-piece positive electrode plate and/or a long-piece positive electrode plate (460) arranged in the winding direction and spaced apart from the continuous positive electrode plate.
-
公开(公告)号：EP4195352A1
公开(公告)日：2023-06-14
申请号：EP21939595.1
申请日：2021-10-15
发明人： GUO, Suogang , FU, Chenghua , ZHANG, Chenchen , YE, Yonghuang
IPC分类号： H01M10/0587 , H01M10/04
摘要： Provided in the present application is a lithium-ion battery, comprising a wound structure formed by winding a negative electrode plate, a separator and a positive electrode plate in a winding direction, the wound structure comprising an arc-shaped bending part, wherein the negative electrode plate comprises a negative electrode material layer, and an insulation layer and a reaction layer located on a surface of the insulation layer are provided on a surface of the negative electrode material layer in the bending part, the reaction layer comprising a lithium storage material.
-
公开(公告)号：EP4391104A1
公开(公告)日：2024-06-26
申请号：EP23784104.4
申请日：2023-02-27
发明人： CHANG, Wen , FU, Chenghua , GUO, Suogang , YE, Yonghuang , ZHU, Chang , HAN, Wenge , ZHANG, Yan
摘要： This application discloses an electrode plate, an electrode assembly, a battery cell, a battery, and an electrical device. The electrode plate includes: a current collector (20), where the current collector (20) includes a base film layer (22) and metal layers (24), and the metal layers (24) are disposed on the base film layer (22) in a spaced-apart manner; and active material layers (30), where the active material layers (30) are applied to the base film layer (22) in a spaced-apart manner. Each active material layer (30) at least partially covers a corresponding metal layer (24).
-
5.发明公开
公开(公告)号：EP4297144A1
公开(公告)日：2023-12-27
申请号：EP22866238.3
申请日：2022-07-11
发明人： GUO, Suogang , FU, Chenghua , YE, Yonghuang , ZHANG, Chenchen
IPC分类号： H01M10/0587 , H01M50/457 , H01M50/466
摘要： Disclosed in the present application are an electrode assembly and a battery cell related to same, and a battery, an apparatus and a manufacturing method. The electrode assembly comprises: a first electrode plate and a second electrode plate, which have opposite polarities; and a spacer, which is used for separating the first electrode plate and the second electrode plate, wherein the spacer comprises at least two layers, and the first electrode plate, the second electrode plate and the spacer are wound to form the electrode assembly. By means of the electrode assembly, the service life of a battery can be prolonged, and the safety of the battery can be improved.
-
公开(公告)号：EP4401226A1
公开(公告)日：2024-07-17
申请号：EP22866146.8
申请日：2022-05-20
发明人： GUO, Suogang , FU, Chenghua , CHANG, Wen , YE, Yonghuang
IPC分类号： H01M50/40 , H01M10/0587
CPC分类号： Y02E60/10 , Y02P70/50 , H01M10/0587 , H01M50/466 , H01M10/052 , H01M50/489 , H01M50/457 , H01M50/40 , H01M10/0525 , H01M50/449 , H01M10/04 , H01M10/0431 , H01M10/0436 , H01M50/491
摘要： Provided are an electrode assembly (10), a battery cell (6), a battery (2), and an electric apparatus. The electrode assembly (10) comprises a positive electrode plate (11), a negative electrode plate (12), and a separation assembly (13), and the separation assembly (13) is configured to separate the positive electrode plate (11) from the negative electrode plate (12). At least part of the separation assembly (13) is provided as a multi-layer structure area (13a), and at least part of the multi-layer structure area (13a) is located between the positive electrode plate (11) and negative electrode plate (12) adjacent to each other. The multi-layer structure area (13a) is configured to correspond to a position where the negative electrode plate (12) is prone to lithium precipitation. The multi-layer structure area (13a) can block lithium dendrites, thereby reducing the probability of conduction between the positive electrode plate (11) and the negative electrode plate (12), effectively reducing the risk of short circuiting, prolonging the service life of the electrode assembly (10), and improving the safety of the electrode assembly (10).
-
公开(公告)号：EP4195349A1
公开(公告)日：2023-06-14
申请号：EP21945364.4
申请日：2021-10-15
发明人： GUO, Suogang , FU, Chenghua , ZHANG, Chenchen , YE, Yonghuang
IPC分类号： H01M10/0525
摘要： Provided in the present application is a secondary battery comprising a positive electrode plate and a negative electrode plate, wherein the negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer provided on at least one surface of the negative electrode current collector, an insulation layer and a reaction layer are sequentially provided on the surface of the negative electrode active material layer on the side opposite to the negative electrode current collector side, and the reaction layer comprises at least one of graphite, silicon, silicon oxide, silicon suboxide, tin oxide, copper oxide, and zinc oxide, and when the capacity of the positive electrode active material layer per unit area in the positive electrode plate is denoted as A1, and the capacity of the negative electrode active material layer per unit area in the negative electrode plate is denoted as B1, B1/A1
-
公开(公告)号：EP4152437A1
公开(公告)日：2023-03-22
申请号：EP22818590.6
申请日：2022-04-14
发明人： CHANG, Wen , FU, Chenghua , ZHANG, Chenchen , YE, Yonghuang , GUO, Suogang
IPC分类号： H01M4/13 , H01M10/0525
摘要： Embodiments of this application provide an electrode assembly, including a first electrode plate and a second electrode plate. The first electrode plate includes a first current collector and a first active material layer, where the first current collector includes a first body portion and a first tab, the first active material layer is applied on a surface of the first body portion, and the first tab extends from an end of the first body portion in a first direction. The second electrode plate includes a second current collector and a second active material layer, where the second current collector includes a second body portion and a second tab, the second active material layer is applied on a surface of the second body portion, and the second tab extends from an end of the second body portion in the first direction. At least an end part of the second active material layer close to the first tab is coated with a ceramic coating in a second direction perpendicular to the first direction, where length (y) of the ceramic coating in the first direction is 1/3-3/2 of length (x) of the first tab in the first direction. The ceramic coating of the given size can improve safety of batteries while reducing loss of energy density of the battery.
-
9.发明公开
公开(公告)号：EP4462547A1
公开(公告)日：2024-11-13
申请号：EP23742755.4
申请日：2023-01-10
发明人： GUO, Suogang , YANG, Guozhong , FU, Chenghua , ZHANG, Chenchen , YE, Yonghuang
IPC分类号： H01M10/0587 , H01M10/0583
摘要： This application relates to an electrode assembly, a winding device and method, a battery cell, a battery, and an electric apparatus, and pertains to the field of battery manufacturing technologies. This application proposes an electrode assembly including a positive electrode plate, where a bending region is formed after the positive electrode plate is wound; and the positive electrode plate includes a positive electrode current collector and a positive electrode active substance layer disposed on a surface of the positive electrode current collector, where the positive electrode active substance layer includes an inactive region, and at least part of the inactive region is located in the bending region. This application further proposes a winding device and a manufacturing method of electrode assembly, so as to shape the electrode assembly. The electrode assembly has good safety performance, and the manufacturing method and winding device can be used for winding the electrode assembly, so that industrialized production of the electrode assembly can be realized, improving the manufacturing efficiency of the electrode assembly. This application further proposes a battery cell, a battery, and an electric apparatus that include the electrode assembly.
-
公开(公告)号：EP4462528A1
公开(公告)日：2024-11-13
申请号：EP22923682.3
申请日：2022-12-30
发明人： GUO, Suogang , YE, Yonghuang , YANG, Guozhong , FU, Chenghua , ZHANG, Chenchen
IPC分类号： H01M10/04 , H01M10/0587
摘要： This application relates to a winding device and a winding method, and pertains to the field of battery manufacturing technology. This application proposes a winding device including: a winding component; and a drawing mechanism, where the drawing mechanism is configured to draw a protruding section of a separator after the separator is led out of the winding component, so that length of the protruding section reaches a preset value. The winding component is configured to start winding after the length of the protruding section reaches the preset value, to form an electrode assembly. This application further proposes a winding method for forming an electrode assembly through winding. The winding device and the winding method are used for forming an electrode assembly with high safety performance through winding, so as to implement industrial production of the electrode assembly and improve manufacturing efficiency of the electrode assembly.
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.014 秒)
