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1.发明公开公开(公告)号：US20240154440A1
公开(公告)日：2024-05-09
申请号：US18412262
申请日：2024-01-12
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xiaojian HUANG , Chenghua Fu , Zhimin Dan
CPC classification number: H02J7/0068 , H02J7/0042 , H02J7/007 , H02J7/1423 , H02J2207/20
Abstract: A charge-and-discharge circuit, a charge-and-discharge system and a charge-and-discharge control method are provided. The charge-and-discharge circuit includes: a power supply module including at least a first battery pack; an inverter module including an M-phase bridge arm, where M is a positive integer greater than 0; a charge-and-discharge control module including a charge-and-discharge loop switch bridge arm; and a drive module including an M-phase motor. The first battery pack, the M-phase bridge arm, and the charge-and-discharge loop switch bridge arm are connected in parallel. Junction points between upper and lower bridge arms of the M-phase bridge arm are respectively connected to M phases of windings of the M-phase motor in a one-to-one correspondence manner. A junction point between upper and lower bridge arms of the charge-and-discharge loop switch bridge arm are connected to the M-phase motor.
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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：US11139471B2
公开(公告)日：2021-10-05
申请号：US16415043
申请日：2019-05-17
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Ming Zhang , Hao Zhang , Cuiping Zhang , Changlong Han , Chenghua Fu
Abstract: The present disclosure provides a lithium ion battery including a positive electrode plate, a negative electrode plate, a separator, and an electrolyte. The positive electrode plate includes a positive electrode current collector, and a positive electrode film disposed on a surface of the positive electrode current collector and containing a positive electrode active material. The positive electrode active material includes a matrix, a first coating layer on the matrix in form of discrete islands, and a second coating layer on the first coating layer and the matrix as a continuous layer. The electrolyte includes an additive A and an additive B. The additive A is selected from a group consisting of cyclic sulfate compounds represented by Formula 1 and Formula 2, and combinations thereof, and the additive B is one or two selected from lithium difluorobisoxalate phosphate and lithium tetrafluorooxalate phosphate.
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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：US20230420785A1
公开(公告)日：2023-12-28
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 , H01M4/134 , H01M4/131
CPC classification number: H01M50/267 , H01M50/209 , H01M50/233 , H01M4/134 , H01M4/131 , H01M2220/20 , H01M2200/105 , H01M2004/028
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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Patent Agency Ranking
公开(公告)号：US11811054B2
公开(公告)日：2023-11-07
申请号：US17969120
申请日：2022-10-19
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Baoyun Xu , Shaocong Ouyang , Chenghua Fu
CPC classification number: H01M4/364 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M10/4264 , H01M50/204 , H01M2004/028 , H01M2220/20
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：US11769922B2
公开(公告)日：2023-09-26
申请号：US17985941
申请日：2022-11-14
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Baoyun Xu , Shaocong Ouyang , Chenghua Fu
IPC: H01M50/204 , H01M4/505 , H01M4/525 , H01M4/485 , H01M10/42 , H01M4/58 , H01M16/00 , H01M50/267 , H01M4/02
CPC classification number: H01M50/204 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M10/4264 , H01M16/00 , H01M50/267 , H01M2004/028 , H01M2220/20
Abstract: The battery pack may include a battery pack case and battery cells accommodated in the battery pack case. In each of the first battery cell, the second battery cells, and the third battery cells, when the sum of a discharge capacity corresponding to the first discharge voltage plateau and a discharge capacity corresponding to the second discharge voltage plateau is 100%, a percentage of the discharge capacity corresponding to the second discharge voltage plateau of the third battery cells may be larger than a percentage of the discharge capacity corresponding to the second discharge voltage plateau of the second battery cells, which may be larger than a percentage of the discharge capacity corresponding to the second discharge voltage plateau of the first battery cell.
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公开(公告)号：US20240204265A1
公开(公告)日：2024-06-20
申请号：US18595075
申请日：2024-03-04
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Suogang GUO , Chenghua Fu , Yonghuang Ye , Wen Chang
IPC: H01M10/42 , H01M10/04 , H01M50/46 , H01M50/489
CPC classification number: H01M10/4235 , H01M10/0431 , H01M50/46 , H01M50/489
Abstract: Provided in the embodiment of the present application are an electrode assembly, a battery cell, a battery, and an electric apparatus. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separation assembly The separation assembly is configured to separate the positive electrode plate from the negative electrode plate. The separation assembly includes a substrate area and a reinforcing area connected to the substrate area. A thickness of the reinforcing area is greater than a thickness of the substrate area. At least part of the reinforcing area is located between the positive electrode plate and negative electrode plate adjacent to each other. The reinforcing area may be configured to correspond to a position where the negative electrode plate is prone to lithium precipitation.
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公开(公告)号：US11961969B2
公开(公告)日：2024-04-16
申请号：US17196943
申请日：2021-03-09
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chengdu Liang , Chenghua Fu , Peipei Chen , Junmin Feng
IPC: H01M10/0569 , H01M10/0525 , H01M10/0567
CPC classification number: H01M10/0569 , H01M10/0525 , H01M10/0567 , H01M2220/20 , H01M2300/0037
Abstract: This application provides a nonaqueous electrolyte, a lithium-ion battery, a battery module, a battery pack, and an apparatus. The nonaqueous electrolyte includes a nonaqueous solvent, a lithium salt, and an additive. The nonaqueous solvent is a high oxidation potential solvent, and the additive includes cyclic sulfate. The high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II, and the cyclic sulfate may be selected from one or more of compounds represented by formula III. This application can not only improve electrochemical performance of the lithium-ion battery under high temperature and high voltage and improve safety performance such as overcharge safety and hot box safety of the lithium-ion battery, but also ensure that the lithium-ion battery has some kinetic performance.
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10.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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