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公开(公告)号：US20240347862A1
公开(公告)日：2024-10-17
申请号：US18757822
申请日：2024-06-28
发明人： Yingyang Wu , Dongou Zhan , Xin Jin
IPC分类号： H01M50/46 , H01M50/105 , H01M50/533 , H01M50/536
CPC分类号： H01M50/461 , H01M50/105 , H01M50/533 , H01M50/536
摘要： A battery cell includes an electrode assembly and a first tab. The electrode assembly includes a separator. An outer surface of the electrode assembly includes a first lateral face and a second lateral face disposed opposite to each other along a first direction, and a first end face and a second end face disposed opposite to each other along a second direction. One end of the first tab is electrically connected to the first electrode plate, and another end of the first tab extends out from the first end face. The first tab includes a first surface and a second surface. The first surface is oriented toward the first lateral face, and the second surface is oriented away from the first lateral face. The first end face includes a first region. The first region is located between the first surface and the first lateral face.
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公开(公告)号：US12119508B2
公开(公告)日：2024-10-15
申请号：US17281470
申请日：2020-09-29
发明人： Mingjie Wu , Xin Wang
IPC分类号： H01M50/262 , B60L50/64 , H01M50/209 , H01M50/233
CPC分类号： H01M50/262 , B60L50/64 , H01M50/209 , H01M50/233 , H01M2220/20
摘要： A battery module unit including a plurality of sequentially stacked first brackets and a plurality of battery cells. Each first bracket includes a bracket body. A first battery cell group and second battery cell group disposed the opposite side of the first bracket. A connecting structure is disposed at one end of a plurality of the bracket bodies. A fastener is disposed on the first fixing bracket and is fixed to a sidewall of the connecting structure to fix the connecting structure to the first fixing bracket in a stacking direction. The first battery cell group is symmetric to the second battery cell group around a symmetric central axis of the first fixing bracket or around a symmetric central axis of a plurality of the first fixing brackets.
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公开(公告)号：US20240332592A1
公开(公告)日：2024-10-03
申请号：US18621137
申请日：2024-03-29
发明人： Jin WANG
IPC分类号： H01M10/04 , H01M50/105 , H01M50/538
CPC分类号： H01M10/0431 , H01M50/105 , H01M50/538
摘要： A secondary battery includes a housing, an electrode assembly, a first adhesive layer, and a second adhesive layer. The electrode assembly is disposed in the housing, the electrode assembly includes a wound first electrode plate, and a direction of a winding center axis of the electrode assembly is a first direction; and the first electrode plate includes a tail section forming an outermost ring of the electrode assembly, and the tail section includes a first surface facing away from the housing and a second surface facing towards the housing. The first adhesive layer includes a first portion bonded on the first surface and a second portion exceeding the tail section in the first direction. The second adhesive layer includes a third portion bonded on the second surface and a fourth portion exceeding the tail section in the first direction.
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公开(公告)号：US20240274939A1
公开(公告)日：2024-08-15
申请号：US18619780
申请日：2024-03-28
发明人： Dongyang Yan
IPC分类号： H01M50/178 , H01M50/105 , H01M50/121 , H01M50/184 , H01M50/188 , H01M50/193 , H01M50/198 , H01M50/557 , H01M50/586 , H01M50/59
CPC分类号： H01M50/178 , H01M50/105 , H01M50/121 , H01M50/184 , H01M50/188 , H01M50/193 , H01M50/198 , H01M50/557 , H01M50/586 , H01M50/59 , H01M2220/30
摘要： An electrochemical apparatus including a housing, an electrode assembly, and a first conductive plate. The electrode assembly is disposed in the housing. The conductive plate is electrically connected to the electrode assembly and extends out from the housing. The electrochemical apparatus further includes a first layer, where an extending direction of the conductive plate is a first direction, and in the first direction, the first layer includes a first region and a second region connected to each other, the first region being disposed inside the housing, and the second region being disposed outside the housing. A direction perpendicular to a surface of the conductive plate is a second direction, and viewed along the second direction, the second region partially overlaps the conductive plate. The second region includes a first protrusion and a second protrusion. In a third direction, the first protrusion is separated from the second protrusion.
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5.发明公开公开(公告)号：US20240258496A1
公开(公告)日：2024-08-01
申请号：US18629202
申请日：2024-04-08
发明人： Wenyuan LIU , Gang PENG , Ye LANG
CPC分类号： H01M4/0471 , H01M4/505 , H01M4/525 , H01M2004/021 , H01M2004/028
摘要： A positive electrode material includes secondary particles formed from primary particles. The positive electrode material satisfies the following relational expression: 15%≤(Dv50a−Dv50b)/Dv50b≤80%, where Dv50a represents Dv50 directly measured by a laser particle size analyzer for the positive electrode material without ultrasonic treatment, Dv50b represents Dv50 measured by the laser particle size analyzer for the positive electrode material after ultrasonic treatment, and Dv50 represents a particle size of the positive electrode material at a cumulative volume of 50% in a volume-based particle size distribution as measured by starting from small particle sizes. The secondary particles of the positive electrode material that meets the foregoing condition can form soft agglomerates, so that the electrochemical device is of high cycle performance and high safety performance.
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公开(公告)号：US20240222816A1
公开(公告)日：2024-07-04
申请号：US18399787
申请日：2023-12-29
发明人： Fudong JIN
IPC分类号： H01M50/54 , H01M10/0585
CPC分类号： H01M50/54 , H01M10/0585 , H01M10/0525
摘要： An electrochemical apparatus includes a first electrode plate and a second electrode plate separated by a separator, and a first tab adhesive and a first electrode plate adhesive. The first electrode plate is provided with a first mounting groove for accommodating the first tab adhesive. The second electrode plate is provided with a second mounting groove on a surface facing the first electrode plate, the first electrode plate adhesive being accommodated in the second mounting groove. With the foregoing structure, the electrochemical apparatus of some embodiments of this application can effectively solve the problem of increased overall thickness of the electrochemical apparatus caused by the provision of the first tab adhesive and the first electrode plate adhesive.
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公开(公告)号：US20240021810A1
公开(公告)日：2024-01-18
申请号：US18193938
申请日：2023-03-31
IPC分类号： H01M4/525 , H01M10/44 , H01M10/052
CPC分类号： H01M4/525 , H01M10/446 , H01M10/448 , H01M10/052 , H01M2004/028
摘要： A positive electrode, including a current collector and a positive electrode active material layer provided on the current collector, the positive electrode active material layer including a lithium transition metal composite oxide, where in a direction parallel to a plane on which the current collector is located, an average particle size of the lithium transition metal composite oxide is Dp, and in a direction perpendicular to the plane on which the current collector is located, an average particle size of the lithium transition metal composite oxide is Dv, satisfying:
1.1≤Dp/Dv≤2.3.-
公开(公告)号：US11804636B2
公开(公告)日：2023-10-31
申请号：US16502029
申请日：2019-07-03
发明人： Yanan Zhang , Chao Yang , Wenwei Yin , Chunhua Bian
IPC分类号： H01M50/46 , H01M50/572 , H01M50/538 , H01M50/536
CPC分类号： H01M50/46 , H01M50/536 , H01M50/538 , H01M50/572
摘要： One aspect of the present application provides an electrode assembly, including a first electrode plate, a second electrode plate, and a separator disposed therebetween. The first electrode plate and the second electrode plate are wound or stacked to form the electrode assembly. Wherein the electrode assembly further includes a first electrode tab disposed on the first electrode plate, and an insulating layer including a first portion disposed on the first electrode plate. And, no second electrode plate is disposed between the first portion and the first electrode tab. The present application also provides a battery. The present application intends to at least improve the safety performance of the battery.
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公开(公告)号：US20230261263A1
公开(公告)日：2023-08-17
申请号：US18128355
申请日：2023-03-30
发明人： Xiexue Peng , Jianming Zheng , Chao Tang
IPC分类号： H01M10/0567
CPC分类号： H01M10/0567
摘要： An electrolytic solution, including at least one of compounds represented by Formula (I-A). In Formula (I-A), n is an integer selected from 0 to 6; A1, A2, and A3 each are a structural formula represented by Formula (I-B) or Formula (I-C). In Formula (I-A), a number of —CN functional groups is 5 to 10, and a number of
is greater than or equal to 1. The electrolytic solution is applicable to an electrochemical device, so that the electrochemical device can maintain good high-temperature storage performance, cycle performance, floating charge performance, and overcharge performance while achieving a relatively high energy density.-
公开(公告)号：US20230238664A1
公开(公告)日：2023-07-27
申请号：US18128605
申请日：2023-03-30
发明人： Yuyang Dong , Dongyang Yan , Qiao Zeng
IPC分类号： H01M50/538
CPC分类号： H01M50/538
摘要： An electrode assembly comprises: a first electrode plate, a second electrode plate and a first layer containing an insulating material, the first layer is sandwiched between the first electrode plate and the second electrode plate, and the first electrode plate, the second electrode plate and the first layer are stacked and then partially folded back to form the electrode assembly; the first electrode plate includes a first surface and a second surface that are opposite to and connected with each other, the first surface and the second surface are formed by the folding-back and separated by an inflection point of the folding-back; a first distance is provided between the first surface and the second surface in a first direction; the first distance is different along a second direction perpendicular to the first direction.
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