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公开(公告)号：US20240258585A1
公开(公告)日：2024-08-01
申请号：US18635210
申请日：2024-04-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Wenwei CHEN , Jiang LIU , Ying HUANG , Quankun LI
IPC: H01M10/42 , H01M50/249 , H01M50/591
CPC classification number: H01M10/4235 , H01M50/249 , H01M50/591
Abstract: Embodiments of the present application provide a battery cell, a battery, and a power consumption apparatus, which could effectively improve performance of the battery without increasing the internal space of the battery. The battery cell includes: an electrode assembly including a first end face and a second end face opposite to each other, the first end face being provided with tabs; and a lithium replenishing apparatus connected with the second end face.
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12.发明公开公开(公告)号：US20240234988A1
公开(公告)日：2024-07-11
申请号：US18429654
申请日：2024-02-01
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
IPC: H01M50/593 , H01M50/169
CPC classification number: H01M50/593 , H01M50/169 , H01M2220/20
Abstract: A battery cell may comprise a housing, an electrode assembly, an end cover and an isolator. The housing may be provided with an opening at an end along a first direction. The housing may comprise a first side plate with a first plate body and a second plate body arranged along a second direction, the first plate body and the second plate body may be welded to form a welding part extending to the opening, and the second direction is perpendicular to the first direction. The electrode assembly may be accommodated in the housing. The end cover may be used for covering the opening. The isolator may be arranged between the first side plate and the electrode assembly, and attached to the first side plate and cover at least part of the welding part to isolate the electrode assembly from the welding part.
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公开(公告)号：US20240088447A1
公开(公告)日：2024-03-14
申请号：US18515260
申请日：2023-11-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
IPC: H01M10/0585 , H01M4/139 , H01M50/54
CPC classification number: H01M10/0585 , H01M4/139 , H01M50/54 , H01M2004/021
Abstract: An electrode assembly may include positive and negative electrode sheets, the positive and negative electrode sheets including positive and negative electrode current collectors and positive and negative electrode active material layers. The negative electrode sheet may be continuously bent and include a plurality of laminated segments and a plurality of bent segments for connecting the laminated segments; a plurality of the positive electrode sheets may be alternately laminated with the plurality of laminated segments in a first direction. An outermost positive electrode sheet may be a unilateral electrode having the positive electrode active material layer coated on an inner side rather than outer side of the positive electrode current collector thereof. The bent segment may be connected to an end of the laminated segment in a second direction; and the unilateral electrode may not extend beyond the adjacent bent segment.
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公开(公告)号：US20220204355A1
公开(公告)日：2022-06-30
申请号：US17655092
申请日：2022-03-16
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Yongshou LIN , Guobao WANG , Ke WANG , Jiang LIU , Bin YAO
Abstract: A method for producing a lithium iron phosphate precursor by using a retired lithium iron phosphate battery as a raw material is provided, which includes steps of: soaking a battery cell in acid, performing electrolysis to reclaim copper, oxidizing ferrous iron, precipitating iron phosphate, and precipitating lithium carbonate. After precipitation is completed, performing one-step reclaim to obtain the lithium iron phosphate precursor.
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Patent Agency Ranking
15.发明公开公开(公告)号：US20240304808A1
公开(公告)日：2024-09-12
申请号：US18669462
申请日：2024-05-20
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xiang ZHOU , Yao JIANG , Jiang LIU , Baiqing LI
CPC classification number: H01M4/5825 , H01M4/364 , H01M4/366 , H01M4/505 , H01M4/525 , H01M4/58 , H01M4/582 , H01M4/625 , H01M2004/021 , H01M2004/028 , H01M4/64 , H01M10/0525
Abstract: A positive electrode sheet, a secondary battery, a battery module, a battery pack and an electrical apparatus are described. The positive electrode sheet includes a positive electrode current collector and a positive electrode film layer arranged on at least one surface of the positive electrode current collector and having a single-layer or multi-layer structure. When the positive electrode film layer is of the single-layer structure, at least one positive electrode film layer comprises both a first positive electrode active material and a second positive electrode active material with a chemical formula of LiaAxMn1-yRyP1-zCzO4-nDn; and/or, when the positive electrode film layer is of the multi-layer structure, at least one layer of the at least one positive electrode film layer includes both a first and second positive electrode active material. The secondary battery made of the positive electrode sheet has high energy density and high battery cell rate performance.
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16.发明公开公开(公告)号：US20230282813A1
公开(公告)日：2023-09-07
申请号：US18197108
申请日：2023-05-15
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Bin YAO , Ying HUANG , Ruiying SHI , Jiang LIU , Xuefang CHEN
CPC classification number: H01M4/366 , H01M10/0525 , H01M4/624 , H01M4/663 , H01M4/5825 , H01M4/583 , H01M2220/20 , H01M2004/027
Abstract: An electrode assembly may comprise a positive electrode plate and a negative electrode plate, wherein a positive electrode active material layer of the positive electrode plate may comprise a positive electrode active material and a quinone compound; and a negative electrode active material layer of the negative electrode plate may comprise a negative electrode active material and a conductive polymer material, wherein based on the mass of the positive electrode active material layer, the mass content of the quinone compound mc % may be 0.5% to 3%; the capacity per gram of the quinone compound may be CapC; the capacity per gram of the positive electrode active material may be Cap; and based on the mass of the negative electrode active material layer, the mass content of the conductive polymer material may be mA %, satisfying the relationship of:
0.2
≤
Cap
C
-
Cap
Cap
×
m
C
/
m
A
≤
5.-
公开(公告)号：US20230207823A1
公开(公告)日：2023-06-29
申请号：US18079008
申请日：2022-12-12
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Hong WANG , Bin YAO , Ying HUANG , Jiang LIU
CPC classification number: H01M4/624 , H01M4/583 , H01M2004/027
Abstract: This application provides a secondary battery, including a negative electrode plate, where the negative electrode plate may include: a negative electrode current collector; a first negative electrode film layer disposed on at least one surface of the negative electrode current collector, where the first negative electrode film layer may include a first negative electrode active material and a first conductive polymer, a mass percentage of the first conductive polymer in the first negative electrode film layer is recorded as A, and A≤6%; and a second negative electrode film layer disposed on a surface of the first negative electrode film layer, where the second negative electrode film layer may include a second negative electrode active material and a second conductive polymer, and a mass percentage of the second conductive polymer in the second negative electrode film layer is recorded as B; where the negative electrode plate may satisfy A>B.
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公开(公告)号：US20230006304A1
公开(公告)日：2023-01-05
申请号：US17942088
申请日：2022-09-09
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Haizu JIN , Jiang LIU , Xiaona WANG , Wenwei CHEN
IPC: H01M50/375 , H01M50/133
Abstract: A battery cell includes a housing. A dimension of the housing along a length direction of the battery cell is greater than a dimension of the housing along a thickness direction of the battery cell and a dimension of the housing along a width direction of the battery cell. The housing includes a board extending along the length direction and an accommodation space opened from at least one end of the accommodation space. The battery cell further includes an electrode assembly disposed in the accommodation space and a cover configured to cover the opening. A pressure relief mechanism is disposed at the board and configured to be actuated, in response to an internal pressure or temperature of the housing reaching a threshold, to relieve the internal pressure. In the length direction, an extension dimension of the pressure relief mechanism is greater than or equal to ¼ of an extension dimension of the board.
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公开(公告)号：US20220069284A1
公开(公告)日：2022-03-03
申请号：US17416026
申请日：2019-02-26
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Longfei YANG , Guobao WANG , Xiaomei LIU , Jiang LIU , Yongshou LIN , Fenggang ZHAO
Abstract: An electrode assembly and a lithium-ion battery are described. The electrode assembly includes a positive electrode plate, a separator, and a negative electrode plate, where the negative electrode plate includes a negative electrode current collector and a negative electrode active substance layer, the negative electrode plate further includes a lithium metal layer, the lithium metal layer is formed by a plurality of regular or irregular strip-shaped lithium-rich regions, and the plurality of lithium-rich regions present a discontinuous pattern of spaced distribution in a length direction of the negative electrode plate. The electrode assembly further satisfies that: negative electrode capacity per unit area/positive electrode capacity per unit area=1.2 to 2.1 and negative electrode capacity per unit area/(positive electrode capacity per unit area+capacity of the lithium metal layer on the surface of the negative electrode active substance layer per unit area×80%)≥1.10.
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