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公开(公告)号：US20240243444A1
公开(公告)日：2024-07-18
申请号：US18623015
申请日：2024-03-31
发明人： Kai Wu , Zige Zhang , Qingrui Xue , Wei Li , Yu Zhang , Zhengyuan Zhao
IPC分类号： H01M50/533 , H01M50/103 , H01M50/15 , H01M50/474 , H01M50/536
CPC分类号： H01M50/533 , H01M50/103 , H01M50/15 , H01M50/474 , H01M50/536
摘要： Provided are an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device. The electrode plate includes: a current collector, where the current collector includes an insulation layer and a conductive layer disposed on an outer surface of the insulation layer, and the conductive layer includes a body portion and a tab portion arranged along a first direction; and a conductive structure, where the conductive structure is welded to the tab portion to form a welded zone, the conductive structure extends in a direction leaving the body portion, and in a second direction, a size of an end of the welded zone near the body portion is greater than a preset threshold, where the preset threshold is inversely related to thickness of the tab portion in a third direction, and the second direction is perpendicular to the first direction and parallel to the tab portion.
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公开(公告)号：US20240339626A1
公开(公告)日：2024-10-10
申请号：US18743121
申请日：2024-06-14
发明人： Kai Wu , Qingrui Xue , Wei Li , Zige Zhang , Yu Zhang , Zhengyuan Zhao
摘要： Provided are 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.
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3.发明公开公开(公告)号：US20240339625A1
公开(公告)日：2024-10-10
申请号：US18743114
申请日：2024-06-14
发明人： Qingrui Xue , Zige Zhang , Wei Li , Yu Zhang , Zhengyuan Zhao , Jinsong Zhang
IPC分类号： H01M4/66 , H01M50/536
CPC分类号： H01M4/667 , H01M50/536
摘要： Provided are 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.
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公开(公告)号：US20240332546A1
公开(公告)日：2024-10-03
申请号：US18739333
申请日：2024-06-11
发明人： Zige Zhang , Qingrui Xue , Wei Li , Yu Zhang , Zhengyuan Zhao , Jinsong Zhang
IPC分类号： H01M4/70 , H01M4/66 , H01M10/04 , H01M50/538
CPC分类号： H01M4/70 , H01M4/667 , H01M10/0431 , H01M50/538
摘要： Provided are an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device, where the electrode plate includes an active substance region and a non-active substance region arranged along a first direction. The non-active substance region is provided with a bending structure bent along a second direction, the bending structure extends along a third direction, and in the third direction, the active substance region and the bending structure have the same size, where the second direction is a thickness direction of the active substance region, and the first direction, the second direction, and the third direction are perpendicular to each other. This not only increases the space utilization and energy density of the battery cell, but also simplifies the production process and improves the production efficiency of the battery cell.
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公开(公告)号：US20240332541A1
公开(公告)日：2024-10-03
申请号：US18743130
申请日：2024-06-14
发明人： Qingrui Xue , Zige Zhang , Wei Li , Yu Zhang , Zhengyuan Zhao , Jinsong Zhang
IPC分类号： H01M4/66 , H01M4/02 , H01M10/04 , H01M50/213 , H01M50/536
CPC分类号： H01M4/667 , H01M10/0431 , H01M50/213 , H01M50/536 , H01M2004/021
摘要： Provided are an electrode plate, including a current collector, an active substance layer, and a conductive structure. The current collector includes a body portion and a tab portion provided along a first direction, where the body portion is covered with the active substance layer, the tab portion is not covered with the active substance layer, and the conductive structure extends along the first direction and is connected to the tab portion, forming a connecting zone. In a second direction, the connecting zone has a dimension greater than thickness of a body region of the electrode plate, so that after an electrode assembly is wound, connecting zones of adjacent layers are mutually attached; where the second direction is a thickness direction of the electrode plate, the second direction is perpendicular to the first direction.
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公开(公告)号：US20240313366A1
公开(公告)日：2024-09-19
申请号：US18672003
申请日：2024-05-23
发明人： Qingrui Xue , Zige Zhang , Wei Li , Yu Zhang , Zhengyuan Zhao , Jinsong Zhang
IPC分类号： H01M50/536 , H01M50/528 , H01M50/538
CPC分类号： H01M50/536 , H01M50/528 , H01M50/538
摘要： Embodiments of this application provide a battery cell, a battery, and an electric device. The battery cell includes an electrode assembly, and the electrode assembly includes a body portion and a lead-out portion that are disposed in a first direction, the body portion being electrically connected to an electrode terminal via the lead-out portion. The lead-out portion includes a tab portion and a conductive structure. A first end of the conductive structure is welded to the tab portion to form a welded zone, a second end of the conductive structure is connected to the electrode terminal, and the conductive structure extends along a direction leaving the body portion. A melting zone is provided between the welded zone and the body portion. The technical solution of this application can reduce the probability of thermal runaway of batteries.
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