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公开(公告)号：US11929499B2
公开(公告)日：2024-03-12
申请号：US17864483
申请日：2022-07-14
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Shaocong Ouyang , Chenghua Fu , Tingzhen Xie , Bo Wang
CPC classification number: H01M4/505 , H01M4/043 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: A lithium manganate positive electrode active material, comprising a lithium manganate matrix and a cladding layer as a “barrier layer” and a “functional layer” are described. The cladding layer can not only “prevent” the transition metal ions which have been produced by the lithium manganate matrix from directly “running” into the electrolyte solution, but also “prevent” the hydrofluoric acid in the electrolyte solution from directly contacting with the lithium manganate substrate, and then prevent the lithium manganate matrix from dissolving out more transition metal manganese ions; as a “functional layer”, the cladding layer contains various effective ingredients inside, which can reduce the transition metal manganese ions already present inside the battery through chemical reactions or adsorption effects, thus slowing down the generation of transition metal manganese and the decomposition of the SEI film (solid electrolyte interphase film) catalyzed by the transition metal manganese.
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公开(公告)号：US20240290944A1
公开(公告)日：2024-08-29
申请号：US18648388
申请日：2024-04-28
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Miaomiao Dong , Changfeng Bie , Shaocong Ouyang , Huan Ni , Hongyu Liu , Xin Sun , Chenghua Fu
IPC: H01M4/136 , H01M4/02 , H01M4/58 , H01M4/62 , H01M50/204 , H01M50/244
CPC classification number: H01M4/136 , H01M4/5825 , H01M4/62 , H01M50/204 , H01M50/244 , H01M2004/028
Abstract: Provided is a battery pack. The 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. At a temperature lower than or equal to 10° C., a ratio of a discharging capacity of a single cell of the second battery cell to a discharging capacity of a single cell of the first battery cell ranges from 1.003 to 1.12, and a ratio of a discharging capacity of a single cell of the third battery cell to a discharging capacity of a single cell of the second battery cell ranges from 1.005 to 1.15.
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公开(公告)号：US11901575B2
公开(公告)日：2024-02-13
申请号：US18465172
申请日：2023-09-12
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Tingzhen Xie , Shaocong Ouyang , Chenghua Fu , Baoyun Xu , Yunmei Lin
IPC: H01M50/267 , H01M50/209 , H01M50/233 , H01M4/131 , H01M4/134 , H01M4/02
CPC classification number: H01M50/267 , H01M4/131 , H01M4/134 , H01M50/209 , H01M50/233 , H01M2004/028 , H01M2200/105 , H01M2220/20
Abstract: Provided are a battery pack and a power consuming device. The battery pack includes a battery pack case and a plurality of battery cells accommodated in the battery pack case. An inner space of the battery pack case may be divided into a first region located at the center and a second region enclosing the first region. The plurality of battery cells include: at least one first battery cell disposed in the first region; and at least one second battery cell disposed in the second region. An internal resistance of the first battery cell and an internal resistance of the second battery cell increase with the decrease of a temperature.
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4.发明公开公开(公告)号：US20230197959A1
公开(公告)日：2023-06-22
申请号：US18066288
申请日：2022-12-15
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Miaomiao Dong , Shaocong Ouyang , Chenghua Fu , Changfeng Bie
CPC classification number: H01M4/62 , H01M4/131 , H01M4/136 , H01M4/364 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M10/0525 , H01M2004/028
Abstract: A positive electrode composite material for a lithium-ion secondary battery is provided. In some embodiments, the positive electrode composite material for a lithium-ion secondary battery comprises: a positive electrode active material selected from at least one of a lithium iron phosphate material and a nickel cobalt lithium manganate material; and at least one of compounds represented by AaMb(PO4)cXd, wherein A is selected from at least one of Li, Na, K, and Ca, M is selected from at least one of V and Mn, X is selected from any one of halogen elements, a, b, and c are each independently selected from an integer from 1 to 6, and d is selected from an integer from 0 to 3.
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公开(公告)号：US12046719B2
公开(公告)日：2024-07-23
申请号：US18118756
申请日：2023-03-08
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Shaocong Ouyang , Chenghua Fu , Baoyun Xu , Miaomiao Dong , Yonghuang Ye
IPC: H01M10/0585 , H01M4/133 , H01M10/44 , H01M50/204 , H01M4/02
CPC classification number: H01M10/0585 , H01M4/133 , H01M10/441 , H01M50/204 , H01M2004/027 , H01M2004/028 , H01M2220/20
Abstract: A battery pack may include a first battery cell type and a second battery cell type, wherein the first battery cell type may include n first battery cells, and the second battery cell type may include m second battery cells, with n and m being each independently selected from an integer of 1 or more, wherein the second battery cell may have a discharge power at −20° C. greater than that of the first battery cell, the difference in discharge power at −20° C. between the second battery cells and the first battery cells being ≥10 W; the percentage by number of the first battery cells in the battery cells comprised in area A may be 20% to 100%, and the percentage by number of the second battery cells in the battery cells comprised in the area B may be 5% to 100%.
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Patent Agency Ranking
公开(公告)号：US12021232B2
公开(公告)日：2024-06-25
申请号：US17821819
申请日：2022-08-24
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Shaocong Ouyang , Chenghua Fu , Tingzhen Xie , Dong Pan , Yonghuang Ye
IPC: H01M4/505 , H01M4/04 , H01M10/0525 , H01M4/02
CPC classification number: H01M4/505 , H01M4/0416 , H01M10/0525 , H01M2004/028
Abstract: The present disclosure provides a lithium manganate positive electrode active material, comprising a lithium manganate matrix and a cladding layer, where the cladding layer comprises an organic bonding material, one or more A-type salts, and one or more B-type salts. The lithium manganate positive electrode active material of the present disclosure significantly reduces the content of transition metal manganese ions within a battery through combined action of the organic bonding material, the A-type salts, and the B-type salts, thereby slowing down the decomposition and consumption of the SEI film (solid electrolyte interphase) by transition metal manganese, and improving the capacity retention rate and impedance performance of the battery.
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公开(公告)号：US20230127767A1
公开(公告)日：2023-04-27
申请号：US18087713
申请日：2022-12-22
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Tingzhen Xie , Shaocong Ouyang , Chenghua Fu , Bo Wang , Yonghuang Ye
IPC: H01M50/446 , H01M10/0525 , H01M50/457
Abstract: This application relates to a separator with an organic-inorganic hybrid layer. By comprehensively adjusting an adaptive collocation relationship between the median diameter of the first inorganic particles and the median diameter of the second inorganic particles, and by controlling reasonable collocation between the microscale particles and the nanoscale particles, this application develops a separator that is capable of significantly reducing transition metal ions in an electrolytic solution and that is highly ion-permeable, thereby significantly improving the cycle performance and storage performance of lithium-ion batteries.
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8.发明授权公开(公告)号：US11811057B2
公开(公告)日：2023-11-07
申请号：US18331696
申请日：2023-06-08
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Baoyun Xu , Shaocong Ouyang , Chenghua Fu
CPC classification number: H01M4/366 , H01M4/133 , H01M4/134 , H01M4/386 , H01M4/587 , H01M4/625 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer coated on at least one surface of the positive electrode current collector. The positive electrode active material layer includes an inner active material layer and an outer active material layer successively stacked. The inner active material layer has a three-level pore size distribution: an inner primary pore size distribution from 3 nm to 10 nm, an inner secondary pore size distribution from 10 nm to 100 nm, and an inner tertiary pore size distribution from 0.1 μm to 2 μm. The outer active material layer has a three-level pore size distribution: an outer primary pore size distribution from 0.5 nm to 3 nm, an outer secondary pore size distribution from 10 nm to 100 nm, and an outer tertiary pore size distribution from 0.1 μm to 2 μm.
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公开(公告)号：US20230127431A1
公开(公告)日：2023-04-27
申请号：US17969120
申请日：2022-10-19
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Baoyun Xu , Shaocong Ouyang , Chenghua Fu
Abstract: A battery pack may include a battery pack case and battery cells accommodated in the battery pack case, where an inner space of the battery pack case may include a first area and a second area, a first battery cell may be provided in the first area, second battery cells may be provided in the second area, and the second battery cells may be arranged around the first battery cell; the first battery cell and the second battery cells each may have a first discharge voltage plateau and a second discharge voltage plateau, and an average discharge voltage in the first discharge voltage plateau may be higher than an average discharge voltage in the second discharge voltage plateau.
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公开(公告)号：US20230006202A1
公开(公告)日：2023-01-05
申请号：US17821819
申请日：2022-08-24
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Shaocong Ouyang , Chenghua Fu , Tingzhen Xie , Dong Pan , Yonghuang Ye
IPC: H01M4/505 , H01M4/04 , H01M10/0525
Abstract: The present disclosure provides a lithium manganate positive electrode active material, comprising a lithium manganate matrix and a cladding layer, where the cladding layer comprises an organic bonding material, one or more A-type salts, and one or more B-type salts. The lithium manganate positive electrode active material of the present disclosure significantly reduces the content of transition metal manganese ions within a battery through combined action of the organic bonding material, the A-type salts, and the B-type salts, thereby slowing down the decomposition and consumption of the SEI film (solid electrolyte interphase) by transition metal manganese, and improving the capacity retention rate and impedance performance of the battery.
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