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公开(公告)号：US20190207202A1
公开(公告)日：2019-07-04
申请号：US16235625
申请日：2018-12-28
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Shiwen WANG , Qisen HUANG , Huafeng HUANG , Chengdu LIANG
IPC: H01M4/131 , H01M4/1391 , H01M4/525 , H01M4/505 , H01M10/0525 , H01M4/04
CPC classification number: H01M4/131 , H01M2/1673 , H01M4/0421 , H01M4/0423 , H01M4/0426 , H01M4/0428 , H01M4/136 , H01M4/1391 , H01M4/1397 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M10/052 , H01M2004/021
Abstract: The present disclosure relates to the technical field of energy storage, and in particular, relates to a positive electrode, a method for preparing the positive electrode and an electrochemical device. The positive electrode includes a current collector and a positive electrode active material layer that contains positive electrode active material and is arranged on at least one surface of the current collector. An inorganic layer having a thickness of 20 nm to 2000 nm is arranged on the surface of the at least one positive electrode active material layer away from the current collector. The inorganic layer is a porous dielectric layer containing no binder, and the inorganic layer has a porosity of 10%˜60%. The positive electrode active material layer according to the present disclosure significantly improves the cycle performance, high-temperature storage performance and safety of the electrochemical device.
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32.发明申请公开(公告)号：US20190207191A1
公开(公告)日：2019-07-04
申请号：US16211526
申请日：2018-12-06
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Huafeng HUANG , Qisen HUANG , Shiwen WANG , Chengdu LIANG
Abstract: A separator, a method for preparing the separator, and an electrochemical device containing the separator. The separator includes a substrate and an inorganic layer disposed on at least one side of the substrate. The substrate is a porous substrate. The inorganic layer is a dielectric layer containing no binder. The inorganic layer has a thickness of 20 nm to 2000 nm. A mass of the inorganic layer is M1, a mass of the substrate is M2, and M1/M2 is greater than or equal to 0.05 but smaller than or equal to 7.5. An interfacial peeling force between the inorganic layer and the substrate is not smaller than 30 N/m. The interfacial wettability and thermal shrinkage resistance performance of the separator are effectively improved while the separator has a certain mechanical strength. The separator can have favorable mechanical strength and thermal shrinkage percentage and high energy density.
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公开(公告)号：US20190173093A1
公开(公告)日：2019-06-06
申请号：US16209377
申请日：2018-12-04
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chengdu LIANG , Huafeng HUANG , Zuyu WU , Qisen HUANG
IPC: H01M4/66 , H01M10/0525
CPC classification number: H01M4/667 , H01M4/0404 , H01M4/661 , H01M4/662 , H01M4/663 , H01M4/664 , H01M4/668 , H01M10/052 , H01M10/0525 , H01M2004/028
Abstract: The present disclosure provides a current collector, an electrode plate and a battery. The current collector includes an insulation layer and at least one conductive layer located on at least one surface of the insulation layer. The insulation layer is used to support the conductive layer, and the conductive layer is used to support an electrode active material layer. The conductive layer has a thickness of D2, and 300 nmD22 μm. The current collector further includes a protective layer provided on a surface of the conductive layer facing towards the insulation layer. The current collector according to the present disclosure can increase a short-circuit resistance in case of short circuit caused by the battery being abnormal, thereby resulting in protective effect on the conductive layer, and can also increase the bonding force between the insulation layer and the conductive layer, thereby increasing mechanical strength of the current collector.
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公开(公告)号：US20230395809A1
公开(公告)日：2023-12-07
申请号：US18231264
申请日：2023-08-08
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu LIANG , Jing Li , Wei Li , Qingrui Xue , Zige Zhang , Xianwel Yang
IPC: H01M4/66 , H01M4/13 , H01M4/62 , H01M10/0525
CPC classification number: H01M4/667 , H01M4/13 , H01M4/622 , H01M4/625 , H01M4/661 , H01M4/668 , H01M10/0525 , H01M2004/021
Abstract: 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.
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35.发明公开公开(公告)号：US20230307656A1
公开(公告)日：2023-09-28
申请号：US18315730
申请日：2023-05-11
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Huaichao TANG , Kai WU , Chengdu LIANG , Wei LI
CPC classification number: H01M4/628 , H01M4/131 , H01M4/525 , H01M4/505 , H01M2004/028
Abstract: A secondary battery includes an electrode plate including a current collector, a functional layer, and an active material layer. At least a portion of a surface of the current collector includes a plurality of protruding portions and a plurality of recessed portions. The functional layer is disposed in one or more of the plurality of recessed portions. The active material layer covers and contacts the current collector and the functional layer. The functional layer includes at least one of a polymer material or a positive temperature coefficient (PTC) material.
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Patent Agency Ranking
36.发明公开公开(公告)号：US20230223521A1
公开(公告)日：2023-07-13
申请号：US18108515
申请日：2023-02-10
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chengdu LIANG , Yongchao LIU , Na LIU , Yingjie GUAN , Qisen HUANG , Wei FU
CPC classification number: H01M4/366 , H01M4/5825 , H01M4/525 , H01M4/505 , H01M4/131 , C01G53/50 , C01P2004/51
Abstract: The present invention relates to an electrode active material, a preparation method thereof, an electrode, a battery, and an apparatus. The electrode active material includes: a core and a coating layer, where the core includes a ternary material, the coating layer coats the core, the coating layer includes a reaction product of a sulfur-containing compound and a lithium-containing compound, and the reaction product includes element Li, element S, and element O.
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公开(公告)号：US20230061760A1
公开(公告)日：2023-03-02
申请号：US18053493
申请日：2022-11-08
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Quanguo LI , Yonghuang YE , Chengdu LIANG , Haizu JIN , Qian LIU , Xia HU , Xiaofu XU
IPC: H01M10/658 , H01M50/375
Abstract: This application provides a battery, an apparatus, a preparation method of battery, and a preparation apparatus of battery. The battery includes a first battery cell, a second battery cell, and a first thermal insulation member. The second battery cell is disposed adjacent to the first battery cell, an energy density of the second battery cell is less than that of the first battery cell, and the first thermal insulation member is disposed between the first battery cell and the second battery cell.
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公开(公告)号：US20220393291A1
公开(公告)日：2022-12-08
申请号：US17887644
申请日：2022-08-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xiaofu XU , Yonghuang YE , Qian LIU , Haizu JIN , Chengdu LIANG
IPC: H01M50/267 , H01M50/209 , H01M50/51 , H01M4/583 , H01M10/04
Abstract: The present application relates to a battery module, including a first-type battery cell and a second-type battery cell electrically connected at least in series, the first-type battery cell and the second-type battery cell are battery cells of different chemical systems, the first-type battery cell includes N first battery cell(s), the second-type battery cell includes M second battery cell(s); the first battery cell includes a first negative electrode plate, the second battery cell includes a second negative electrode plate, a ratio of a conductivity of an electrolyte solution (25° C.) of the first battery cell to a coating mass per unit area of the first negative electrode plate is denoted as Ml, and a ratio of a conductivity of an electrolyte solution (25° C.) of the second battery cell to a coating mass per unit area of the second negative electrode plate is denoted as M2, M1>M2, and 0.08≤M1≤11, 0.03≤M2≤4.62.
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公开(公告)号：US20220367996A1
公开(公告)日：2022-11-17
申请号：US17622024
申请日：2020-09-07
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xinxiang CHEN , Shoujun HUANG , Yulian ZHENG , Peng WANG , Wei LI , Chengdu LIANG
IPC: H01M50/655 , H01M50/15 , H01M50/186 , H01M50/342 , H01M50/308 , H01M50/184 , H01M50/103 , H01M50/209
Abstract: An end cover assembly includes: an end cover with a through hole for injecting electrolyte and a first clamping portion, wherein the first clamping portion is disposed along a circumferential direction of the through hole and is located on one side of the end cover away from an interior of the battery cell; a sealing ring for sealing the through hole; and a pressure relief device covering at least part of the sealing ring and closing the through hole; wherein the pressure relief device includes a second clamping portion, and is rotatable such that when the pressure relief device is rotated to a first position, the second clamping portion is clamped with the first clamping portion; and when the pressure relief device is rotated to a second position, the second clamping portion is disengaged from the first clamping portion.
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公开(公告)号：US20220209226A1
公开(公告)日：2022-06-30
申请号：US17697930
申请日：2022-03-18
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Cheng LI , Qisen HUANG , Xin LIU , Changliang SHENG , Shiwen WANG , Xianghui LIU , Jia PENG , Mingling LI , Chengdu LIANG
Abstract: This application relates to a negative electrode plate, a secondary battery and apparatus thereof. The secondary battery of the present application comprises a negative electrode plate, the negative electrode plate comprises a composite current collector and a negative electrode active material layer disposed on at least one surface of the composite current collector, the negative electrode active material layer comprises a silicon-based active material, the silicon-based active material accounts for 0.5 wt % to 50 wt % of total mass of the negative electrode active material layer, and the composite current collector comprises a polymer support layer and a metal conductive layer disposed on at least one surface of the polymer support layer, and the composite current collector has a brittleness parameter C ranging from 0.03 to 0.5. The secondary battery and the negative electrode plate achieve good coordination between the current collector and the negative electrode active material layer.
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