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公开(公告)号：US20240274836A1
公开(公告)日：2024-08-15
申请号：US18626100
申请日：2024-04-03
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Mingling LI , Xin LIU , Qisen HUANG , Xianghui LIU , Cheng LI
Abstract: A composite current collector includes a first metal layer, a second metal layer, and a first binding layer. The first metal layer includes a first body zone and a first tab zone. The first tab zone is located at an end of the first metal layer. The second metal layer includes a second body zone and a second tab zone. The second tab zone is located at an end of the second metal layer. The first body zone and the second body zone are connected through the first binding layer. The first tab zone has a thickness greater than thickness of the first body zone. The first tab zone extends toward the second tab zone.
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公开(公告)号：US20240190715A1
公开(公告)日：2024-06-13
申请号：US18409940
申请日：2024-01-11
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xin LIU , Qisen HUANG , Cheng LI , Mingling LI , Xianghui LIU
CPC classification number: C01D15/02 , H01M4/525 , H01M4/625 , C01P2004/03 , C01P2004/61 , C01P2004/84 , C01P2006/40 , H01M2004/028
Abstract: A positive lithium supplement material includes a core, an inorganic coating layer coated on at least part of a surface of the core, and an organic coating layer coated on at least part of a surface of the inorganic coating layer away from the core. The core includes LixMyOz, and the M element includes at least one of Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, or Zn, where 2≤x≤6, 1≤y≤2, 2≤z≤4, and the core is electrically neutral.
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公开(公告)号：US20210151770A1
公开(公告)日：2021-05-20
申请号：US17128090
申请日：2020-12-19
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin LIU , Qisen HUANG , Shiwen WANG , Xianghui LIU , Jia PENG , Mingling LI , Changliang SHENG
IPC: H01M4/66 , H01M10/0525 , H01M4/04
Abstract: The present disclosure provides a lithium ion secondary battery, a battery core, a negative electrode plate and an apparatus containing the lithium ion secondary battery. The lithium ion secondary battery includes a battery core and an electrolytic solution, the battery core including a positive electrode plate comprising a positive current collector and a positive active material layer, a separator, and a negative electrode plate comprising a negative current collector and a negative active material layer, wherein the positive current collector and/or the negative current collector are a composite current collector, the composite current collector comprises a polymer-based support layer and a conductive layer disposed on at least one surface of the support layer, and the composite current collector has a thermal conductivity in a range of 0.01 W/(m·K) to 10 W/(m·K), preferably in a range of 0.1 W/(m·K) to 2 W/(m·K).
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公开(公告)号：US20190305321A1
公开(公告)日：2019-10-03
申请号：US16366505
申请日：2019-03-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu LIANG , Huafeng HUANG , Qisen HUANG , Xin LIU
Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector includes an insulation layer; and a conductive layer at least located on at least one surface of the insulation layer. The conductive layer has a room temperature thin film resistor of RS, where 0.01Ω/□≤RS≤0.15Ω/□. The current collector is provided with a plurality of holes penetrating through the insulation layer and the conductive layer.
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公开(公告)号：US20190305320A1
公开(公告)日：2019-10-03
申请号：US16366357
申请日：2019-03-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu LIANG , Huafeng HUANG , Qisen HUANG , Xin LIU
Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector includes an insulation layer; and a conductive layer at least located on at least one surface of the insulation layer. The conductive layer has a thickness of D2, where 30 nm≤D2≤3 μm. The current collector is provided with a plurality of holes penetrating through the insulation layer and the conductive layer.
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Patent Agency Ranking
公开(公告)号：US20240113288A1
公开(公告)日：2024-04-04
申请号：US18523929
申请日：2023-11-30
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
CPC classification number: H01M4/382 , H01M4/0404 , H01M4/0421 , H01M4/583 , H01M4/663 , H01M4/667 , H01M4/668 , H01M2004/027
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. 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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7.发明公开公开(公告)号：US20230187655A1
公开(公告)日：2023-06-15
申请号：US18069586
申请日：2022-12-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Mingling LI , Jia PENG , Xin LIU , Qisen HUANG , Keqiang LI , Cheng LI , Xianghui LIU
CPC classification number: H01M4/667 , H01M4/82 , H01M4/661 , H01M4/668 , H01M2004/021
Abstract: A composite current collector includes a support layer and a conductive layer. The support layer has two surfaces opposite to each other along a thickness direction. The conductive layer is provided on the two surfaces and includes a first portion and a second portion. The first portion includes a first sub-portion and a second sub-portion provided on the two surfaces, respectively. The second portion includes a third sub-portion and a fourth sub-portion. The third sub-portion and the first sub-portion are integrally provided. The fourth sub-portion and the second sub-portion are integrally provided. The third sub-portion and the fourth sub-portion both project from the support layer. The third sub-portion and the fourth sub-portion are affixed to each other and fused as a whole.
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8.发明申请公开(公告)号：US20230132206A1
公开(公告)日：2023-04-27
申请号：US17901101
申请日：2022-09-01
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jia PENG , Mingling LI , Xin LIU , Qisen HUANG
Abstract: This application provides a copper plating solution for a composite current collector, including a leveling agent represented by a general formula (1) where an anion X is F−, Cl−, or Br−; R1, R2, and R3 are each independently selected from O or S; and R4, R5, and R6 are each independently selected from hydrogen, a substituted or unsubstituted alkyl, a substituted or unsubstituted vinyl, a substituted or unsubstituted aryl, and a substituted or unsubstituted heteroaryl.
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公开(公告)号：US20220344649A1
公开(公告)日：2022-10-27
申请号：US17862131
申请日：2022-07-11
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO, LIMITED
Inventor： Xin LIU , Qisen HUANG , Cheng LI , Yingjie GUAN , Yan WEN , Xianghui LIU
Abstract: This application provides a silicon-based material, a preparation method thereof, and a secondary battery, a battery module, a battery pack, and an apparatus associated therewith. The silicon-based material includes a core structure and a coating layer provided on at least partial surface of the core structure, where the core structure includes both a silicon phase and a lithium metasilicate phase, and a particle size P of the lithium metasilicate phase is ≥30 nm. The silicon-based material of this application can not only increase energy density of a secondary battery with the silicon phase, but also improve structural stability and chemical stability of the silicon-based material, so that the secondary battery can deliver satisfactory and balanced cycling performance and first-cycle coulombic efficiency in overall.
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10.发明申请公开(公告)号：US20220085383A1
公开(公告)日：2022-03-17
申请号：US17535690
申请日：2021-11-26
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin LIU , Shiwen Wang , Qisen Huang , Cheng Li , Mingling Li , Jia Peng , Xianghui Liu
IPC: H01M4/66
Abstract: The present application discloses a negative electrode current collector, a negative electrode plate, an electrochemical device, and an apparatus. The negative electrode current collector includes a polymer material-based support layer and a copper-based conductive layer disposed on at least one surface of the support layer; wherein a thickness D1 of the copper-based conductive layer, a tensile strength T of the support layer, and a thickness D2 of the support layer satisfy a relational formula 0.01≤(300×D1)/(T×D2)≤0.5. The negative electrode current collector has relatively high mechanics and mechanical properties, good electrical conductivity and current collection performance and low weight, which can improve preparation yield of the negative electrode current collector, the negative electrode plate and the electrochemical device and their reliability during use, and is beneficial to enabling the electrochemical device to have relatively high electrochemical performance and gravimetric energy density.
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