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公开(公告)号：US20190097433A1
公开(公告)日：2019-03-28
申请号：US16138470
申请日：2018-09-21
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Qifan ZOU , Fuping Luo , Xinxin Du , Shengwei Wang , Wenzhu Xu
Abstract: The present disclosure provides a method, apparatus, and device for charging a battery, and storage medium. The method for charging a battery includes acquiring a battery temperature; determining a charging current value In for the nth charging stage of the battery corresponding to a charging cut-off SOC Sn for the nth charging stage, according to the acquired battery temperature and a preset mapping relationship between a charging cut-off SOC S and a charging current value I for different temperature ranges; charging the battery with Ij in the jth charging stage; acquiring a SOC of the battery at the current time; if the SOC is less than Sj, continuing to charge the battery with if the SOC is not less than Sj and j
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公开(公告)号：US20200006750A1
公开(公告)日：2020-01-02
申请号：US16449196
申请日：2019-06-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Manfang Zhang , Shengwei Wang , Fuping Luo , Xinxin Du , Qiaoge Wang
Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The positive active material comprises a material having a chemical formula of LiaNixCoyMzO2, the negative active material comprises a graphite-type carbon material, the lithium-ion battery satisfies a relationship 58%≤KYa/(KYa+KYc)×100%≤72%. In the present disclosure, by reasonably matching the relationship between the anti-compression capability of the positive active material and the anti-compression capability of the negative active material, it can make the positive electrode plate and the negative electrode plate both have good surface integrity, and in turn make the lithium-ion battery have excellent dynamics performance and excellent cycle performance at the same time.
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公开(公告)号：US20190288279A1
公开(公告)日：2019-09-19
申请号：US16432958
申请日：2019-06-06
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Wenzhu Xu , Jianqing Sun , Guangbo Lu , Fan Sun , Qifan Zou , Shengwei Wang
IPC: H01M4/36 , H01M10/0525 , H01M4/587
Abstract: The present invention provides a lithium ion battery and a negative electrode material thereof. The negative electrode material includes a graphite and an amorphous carbon, wherein the graphite has a graphitization degree of 90˜96% and an average particle diameter D50 of 2˜25 μm, and the amorphous carbon has a graphitization degree of 65˜80% and an average particle diameter D50 of 2˜25 μm. Compared with the prior art, by mixing graphite having a small particle diameter with amorphous carbon, the negative electrode material of the present invention has excellent dynamic performance, cycle performance and storage performance. The present invention also provides a lithium ion battery.
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公开(公告)号：US20190097432A1
公开(公告)日：2019-03-28
申请号：US16134054
申请日：2018-09-18
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xinxin Du , Fuping Luo , Shengwei Wang , Xin Fu
Abstract: The present disclosure provides a method, apparatus, and device for charging a battery, and storage medium. The method for charging a battery includes acquiring a battery temperature; determining a charging current value In for the nth charging stage of the battery, according to the battery temperature and a mapping relationship between different temperature ranges and charging current values I, wherein a preset charging cut-off voltage value Vn for the nth charging stage is greater than Vn−1; charging the battery with Ij in the jth charging stage; acquiring a voltage value of the battery at the current time; if the voltage value is less than Vj, continuing to charge the battery with Ij; if the voltage value is not less than Vj and j
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公开(公告)号：US20180316206A1
公开(公告)日：2018-11-01
申请号：US15965845
申请日：2018-04-28
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Fuping LUO , Shengwei Wang , Xinxin Du , Xin Fu
IPC: H02J7/00 , G01R31/36 , H01M10/0525
Abstract: A method, an apparatus and a device for charging a battery are provided in the present disclosure. The method may include: defining a charging current In for an Nth charging stage of a charging process based on charging capability of the battery, wherein In Vn-1 and Vn is smaller than a theoretical charge cutoff voltage Vmax; in case that the N−1th charging stage is not a last charging stage, charging the battery with In-1 during the N−1th charging stage and proceeding to the Nth charging stage when a voltage across the battery reaches Vn-1; and in case that the N−1th charging stage is the last charging stage, charging the battery with In-1 during the N−1th charging stage and stopping charging when the voltage across the battery reaches Vn-1.
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Patent Agency Ranking
公开(公告)号：US20180205236A1
公开(公告)日：2018-07-19
申请号：US15869318
申请日：2018-01-12
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin Fu , Fuping Luo , Shengwei Wang
CPC classification number: H02J7/007 , H01M2/34 , H01M2/345 , H01M10/44 , H01M10/445 , H01M10/48 , H01M2200/00 , H01M2200/20 , H02J7/0077 , H02J7/0088
Abstract: A method, an apparatus and a system for controlling charging of a battery module are provided in the present disclosure. The method for controlling charging of the battery module may include: acquiring an internal pressure value of the battery module; determining a target pressure threshold range to which the acquired internal pressure value of the battery module belongs, based on a plurality of predefined pressure threshold ranges; obtaining a target charge cutoff voltage corresponding to the target pressure threshold range, based on a correspondence relationship between a plurality of predefined charge cutoff voltage and the plurality of predefined pressure threshold ranges; and controlling the battery module to be charged based on the obtained target charge cutoff voltage.
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公开(公告)号：US20240396145A1
公开(公告)日：2024-11-28
申请号：US18792802
申请日：2024-08-02
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Zhiqiang LI , Chao Zeng , Cong Bao , Shengwei Wang
IPC: H01M50/242 , H01M50/227
Abstract: This application provides a battery box, a battery, and an electric device. The battery box includes a bottom plate and a frame. Each of two ends of the frame is provided with an opening, the opening at one end of the frame is connected to an edge of the bottom plate to form an accommodating space, and a light energy absorber is arranged on a side of the bottom plate in the accommodating space facing the accommodating space. According to the battery box provided in this application, in a case that an impact or a collision occurs at the bottom of the battery box, the light energy absorber can absorb the impact energy produced by the impact or collision, thereby greatly reducing the vibration, extrusion, and collision intensity of a battery module in the battery box. The light energy absorber provides buffering and protection for the battery module.
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公开(公告)号：US20240356360A1
公开(公告)日：2024-10-24
申请号：US18757436
申请日：2024-06-27
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chengui Zhang , Tiansheng Wang , Shengwei Wang , Jianli Chen
CPC classification number: H02J7/06 , H02J7/0014 , H02M3/33507 , H02M3/33573
Abstract: Provided are a battery regulation system and method and an electrical device thereof. The battery regulation system is applied to a vehicle comprising a first motor and a second motor; and the battery regulation system comprises a battery module, a regulation module, and a control module, wherein the regulation module is electrically connected to the battery module and the control module; the battery module comprises a first battery and a second battery, the first battery and the second battery being connected in series, wherein the first battery is used for powering the first motor and the second battery is used for powering the second motor; and the control module is used for controlling the regulation module to regulate the states of charge of the first battery and the second battery when the states of charge of the first battery and the second battery are not consistent.
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公开(公告)号：US11552286B2
公开(公告)日：2023-01-10
申请号：US16449196
申请日：2019-06-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Manfang Zhang , Shengwei Wang , Fuping Luo , Xinxin Du , Qiaoge Wang
Abstract: The present disclosure provides a lithium-ion battery, the lithium-ion battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The positive active material comprises a material having a chemical formula of LiaNixCoyMzO2, the negative active material comprises a graphite-type carbon material, the lithium-ion battery satisfies a relationship 58%≤KYa/(KYa+KYc)×100%≤72%. In the present disclosure, by reasonably matching the relationship between the anti-compression capability of the positive active material and the anti-compression capability of the negative active material, it can make the positive electrode plate and the negative electrode plate both have good surface integrity, and in turn make the lithium-ion battery have excellent dynamics performance and excellent cycle performance at the same time.
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公开(公告)号：US10930932B2
公开(公告)日：2021-02-23
申请号：US16268326
申请日：2019-02-05
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Yanyun Tan , Fuping Luo , Shengwei Wang , Xinxin Du , Qiaoge Wang
Abstract: The present disclosure provides a positive electrode plate and a battery, the positive electrode plate comprises a positive current collector and a positive film, the positive film is provided on least one surface of the positive current collector and comprises a positive active material, the positive active material comprises a layered lithium-containing compound, and an OI value of the positive film represented by COI is less than or equal to 150. The positive electrode plate of the present disclosure has smaller swelling and excellent dynamics performance, and the battery of the present disclosure has high safety performance, excellent dynamics performance and long cycle life at the same time.
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