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11.发明授权公开(公告)号：US11646415B2
公开(公告)日：2023-05-09
申请号：US17547278
申请日：2021-12-10
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Maohua Li , Chuanmiao Yan , Xin Sun
CPC classification number: H01M4/525 , H01M4/133 , H01M4/134 , H01M4/505 , H01M4/622 , H01M4/625 , H01M2004/021 , H01M2004/027 , H01M2004/028 , H01M2220/20
Abstract: The present application discloses a secondary battery and a battery module, a battery pack and an apparatus containing the secondary battery. The secondary battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte; the positive electrode plate comprising a positive electrode current collector and a positive electrode film disposed on at least one surface of the positive electrode current collector and comprising a positive electrode active material; the negative electrode plate comprising a negative electrode current collector and a negative electrode film disposed on at least one surface of the negative electrode current collector and comprising a negative electrode active material; wherein the positive electrode active material comprises one or more of lithium nickel cobalt manganese oxides and lithium nickel cobalt aluminium oxides; the negative electrode active material comprises a silicon-based material and a carbon material; and the secondary battery satisfies: 1.05≤K≤1.25.
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12.发明授权公开(公告)号：US11605816B2
公开(公告)日：2023-03-14
申请号：US17874548
申请日：2022-07-27
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xingbu Chen , Xin Sun , Xiao Chen , Zhenglun Chen , Haotian Xie , Bangrun Wang , Geng Li
IPC: H01M4/525 , H01M4/505 , H01M4/587 , H01M4/58 , H01M10/0525 , H01M10/0567 , H01M4/02
Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive-electrode active substance layer, the positive-electrode active substance layer contains a pre-lithiation agent, and a molecular formula of the pre-lithiation agent is LixNiaCu1−a−bMbO2, where 1≤x≤2, 0
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13.发明申请公开(公告)号：US20220102714A1
公开(公告)日：2022-03-31
申请号：US17547284
申请日：2021-12-10
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin Feng , Jinyang Song , Xin Sun , Huisen Su , Chuanmiao Yan
IPC: H01M4/38 , H01M4/583 , H01M4/505 , H01M4/525 , H01M10/0585 , H01M10/0525 , H01M50/209
Abstract: The present application refers to secondary battery and battery module, battery pack and apparatus including the secondary battery. In particular, the secondary battery includes a housing as well as an electrode assembly and an electrolyte contained in the housing; the electrode assembly includes a positive electrode plate, a negative electrode plate and a separator, and the positive electrode plate includes a positive current collector and a positive electrode film that is disposed on at least one surface of the positive electrode current collector and includes a positive electrode active material; the positive electrode active material includes one or more of lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminum oxide; the negative electrode plate includes a negative electrode current collector and a negative electrode film that is disposed on at least one surface of the negative electrode current collector and includes a negative electrode active material.
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Patent Agency Ranking
公开(公告)号：US12095051B2
公开(公告)日：2024-09-17
申请号：US18384675
申请日：2023-10-27
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Miaomiao Dong , Shaocong Ouyang , Huan Ni , Hongyu Liu , Changfeng Bie , Xin Sun , Chenghua Fu
IPC: H01M10/44 , H01M4/02 , H01M4/136 , H01M4/36 , H01M4/58 , H01M4/60 , H01M10/0525 , H01M10/42 , H01M50/249
CPC classification number: H01M10/443 , H01M4/136 , H01M4/364 , H01M4/5825 , H01M4/60 , H01M10/0525 , H01M10/4235 , H01M10/441 , H01M50/249 , H01M2004/028
Abstract: A battery pack includes a first battery cell, a second battery cell, and a third battery cell. A positive electrode active substance of each battery cell is composed of lithium iron phosphate and a low-temperature additive. The low-temperature additive is selected from compounds containing at least two carbonyl groups, which are conjugated with an unsaturated structure or an atom having lone-pair electrons connected with the carbonyl groups, and a discharging cut-off voltage of the battery pack at a low temperature has the following rules: discharging cut-off voltages V1, V2, and V3 of the first battery cell, second battery cell, and third battery cell range from 1.95V to 2.1V, from 1.8 V to 2.0V, from 1.6V to 1.9V, respectively, and V1, V2, and V3 satisfy a relationship of V1>V2>V3.
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公开(公告)号：US20240145839A1
公开(公告)日：2024-05-02
申请号：US18407472
申请日：2024-01-09
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Huanji Liu , Ziyi Yin , Xin Sun , Haizu Jin , Fenggang Zhao
IPC: H01M50/253 , H01M4/66 , H01M10/42 , H01M10/647 , H01M50/209 , H01M50/51
CPC classification number: H01M50/253 , H01M4/662 , H01M10/42 , H01M10/647 , H01M50/209 , H01M50/51 , H01M2010/4292 , H01M2220/20
Abstract: A battery and an electrical device are provided. The battery includes at least one first battery cell and at least one second battery cell, an internal resistance of the first battery cell is greater than that of the second battery cell, and a heat transfer rate of the first battery cell is less than that of the second battery cell.
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公开(公告)号：US11855277B2
公开(公告)日：2023-12-26
申请号：US17971500
申请日：2022-10-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Bangrun Wang , Na Liu , Chengdu Liang , Yongchao Liu , Xin Sun , Haotian Xie
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M2004/021 , H01M2004/028
Abstract: This application provides a composite positive-electrode material and a preparation method thereof, a positive-electrode plate, a secondary battery, and a battery module, a battery pack, and an apparatus containing such secondary battery. The composite positive-electrode material includes a core and a coating layer covering at least part of a surface of the core, where the core includes a positive-electrode pre-lithiation material, the positive-electrode pre-lithiation material includes a lithium-rich metal oxide, and the coating layer includes a positive-electrode active material.
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公开(公告)号：US20230080029A1
公开(公告)日：2023-03-16
申请号：US18054916
申请日：2022-11-14
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Bangrun Wang , Xin Sun
Abstract: A secondary battery is provided. In some embodiments, the secondary battery includes an electrode plate and a tab , and the electrode plate includes a current collector and an electrode plate film layer disposed on the current collector. The electrode plate film layer has a first zone and a second zone along an extension direction of the tab, where the second zone is closer to the tab than the first zone, a thickness of the first zone is denoted as H1, a thickness of the second zone is denoted as H2, and the electrode plate film layer satisfies 0.6≤H2/H1
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18.发明申请公开(公告)号：US20220166018A1
公开(公告)日：2022-05-26
申请号：US17547278
申请日：2021-12-10
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Maohua LI , Chuanmiao Yan , Xin Sun
Abstract: The present application discloses a secondary battery and a battery module, a battery pack and an apparatus containing the secondary battery. The secondary battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte; the positive electrode plate comprising a positive electrode current collector and a positive electrode film disposed on at least one surface of the positive electrode current collector and comprising a positive electrode active material; the negative electrode plate comprising a negative electrode current collector and a negative electrode film disposed on at least one surface of the negative electrode current collector and comprising a negative electrode active material; wherein the positive electrode active material comprises one or more of lithium nickel cobalt manganese oxides and lithium nickel cobalt aluminium oxides; the negative electrode active material comprises a silicon-based material and a carbon material; and the secondary battery satisfies: 1.05≤K≤1.25.
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