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公开(公告)号：US10742058B2
公开(公告)日：2020-08-11
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：US11515588B2
公开(公告)日：2022-11-29
申请号：US16860408
申请日：2020-04-28
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xinxin Du , Zhimin Dan , Fuping Luo , Shengwei Wang , Tiancong Wang , Xiyang Zuo
IPC: H01M10/637 , H01M10/615 , H02J7/00
Abstract: Disclosed are a heating method for a rechargeable battery, a control unit and a heating circuit. The heating method comprises: determining a frequency value of a pulse current for heating the rechargeable battery in response to a heating command of the rechargeable battery; determining a current value of the pulse current according to the frequency value and an acquired state parameter of the rechargeable battery; judging whether the current value satisfies a preset heating demand; if the current value satisfies the heating demand, generating the pulse current under control according to the frequency value; if the current value does not satisfy the heating demand, re-determining the frequency value and the current value of the pulse current. The embodiments of the present disclosure further provide a control unit and a heating circuit.
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公开(公告)号：US11482876B2
公开(公告)日：2022-10-25
申请号：US17120453
申请日：2020-12-14
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin Fu , Fuping Luo , Shengwei Wang
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：US11050052B2
公开(公告)日：2021-06-29
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 , H01M4/587 , H01M10/0525 , H01M4/485 , H01M4/58 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/1393 , H01M4/62 , H01M4/02
Abstract: The present invention provides a lithium ion battery and a negative electrode material thereof. The negative electrode material includes a mixture of a graphite and an amorphous carbon, wherein the graphite is subjected to a surface treatment, and the surface treatment manner is a combination of mechanical fusion modification and spray drying coating, and wherein the graphite has a graphitization degree of 90-96%, an average particle diameter D50 of 13-25 μm and a specific surface area BET of 0.8-2.5 m2/g, and the amorphous carbon has a graphitization degree of 65-80%, an average particle diameter D50 of 2-15 μm and a specific surface area BET of 1.0-3.0 m2/g.
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公开(公告)号：US11031622B2
公开(公告)日：2021-06-08
申请号：US16443455
申请日：2019-06-17
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Qiaoge Wang , Shengwei Wang , Chuanmiao Yan , Fuping Luo , Yanyun Tan , Manfang Zhang
IPC: H01M10/0525 , H01M4/505 , H01M4/525 , H01M4/587 , H01M10/0566 , H01M4/583 , H01M4/133 , H01M4/131
Abstract: The present disclosure provides a lithium-ion secondary battery, which comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The lithium-ion secondary battery satisfies a relationship: 1.5≤(m×C)/(ρ×Cap)≤6.5. In the present disclosure, by comprehensively considering the rated capacity of the battery, the mass of the electrolyte and the intrinsic parameters of the electrolyte and reasonably quantifying the relationship thereof, the lithium-ion secondary battery can have good dynamics performance and longer cycle life at the same time.
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Patent Agency Ranking
公开(公告)号：US10965138B2
公开(公告)日：2021-03-30
申请号：US16919109
申请日：2020-07-02
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：US10910860B2
公开(公告)日：2021-02-02
申请号：US15869318
申请日：2018-01-12
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin Fu , Fuping Luo , Shengwei Wang
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：US20200335984A1
公开(公告)日：2020-10-22
申请号：US16919109
申请日：2020-07-02
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：US20200014061A1
公开(公告)日：2020-01-09
申请号：US16443455
申请日：2019-06-17
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Qiaoge Wang , Shengwei Wang , Chuanmiao Yan , Fuping Luo , Yanyun Tan , Manfang Zhang
IPC: H01M10/0525 , H01M4/525 , H01M4/505 , H01M10/0566 , H01M4/587
Abstract: The present disclosure provides a lithium-ion secondary battery, which comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte. The lithium-ion secondary battery satisfies a relationship: 1.5≤(m×C)/(ρ×Cap)≤6.5. In the present disclosure, by comprehensively considering the rated capacity of the battery, the mass of the electrolyte and the intrinsic parameters of the electrolyte and reasonably quantifying the relationship thereof, the lithium-ion secondary battery can have good dynamics performance and longer cycle life at the same time.
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公开(公告)号：US10923761B2
公开(公告)日：2021-02-16
申请号：US16272917
申请日：2019-02-11
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jiao Cao , Qifan Zou , Guangbo Lu , Shengwei Wang , Wenzhu Xu
Abstract: The present disclosure provides a lithium-ion battery, and 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 with a chemical formula of LiaNixCoyM1-x-yO2, the negative active material comprises graphite, the OI value of the positive film represented by OIc and the OI value of the negative film represented by OIa satisfy a relationship: 0.05≤OIa/OIc≤10. By reasonably matching the OI value of the positive film represented by OIc and the OI value of the negative film represented by OIa and making OIa/OIc between 0.05 and 10, the dynamics performance of the positive electrode plate and the dynamics performance of the negative electrode plate can achieve an optimal match, the lithium-ion battery can have higher charging capability, and also have excellent cycle life and excellent safety performance during the long-term fast charging use.
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