公开(公告)号：US10886766B2

公开(公告)日：2021-01-05

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: H01M10/44 ,  H02J7/00 ,  H01M10/0525 ,  G01R31/382 ,  H01M10/48

Abstract: A method, an apparatus and a device for charging a battery are provided. 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-1 th 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.

公开(公告)号：US20200381788A1

公开(公告)日：2020-12-03

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 ,  H02J7/00 ,  H01M10/615

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.