公开(公告)号：US20220320888A1

公开(公告)日：2022-10-06

申请号：US17839607

申请日：2022-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chen CHEN ,  Lei HUANG ,  Guangyu XU ,  Wei ZHAO

IPC: H02J7/00 ,  G01R31/3835 ,  G01R31/367

Abstract: Embodiments of this application provide a battery, an electric apparatus, a battery charging method, and an apparatus for charging a battery. The technical solutions provided by the application belong to the field of battery charging technologies. In this application, a historical capacity decline of the battery is determined based on capacity decline in a k-th discharging process and a capacity decline in previous k−1 discharging processes, a full charge voltage in an m-th charging process is determined based on the historical capacity decline, and then m-th charging is performed, based on the determined full charge voltage in the m-th charging process, on the battery. Because the historical capacity decline increases constantly with the use of the battery, in this application, the full charge voltage of the battery in the charging process is increased constantly, or the full charge voltage is opened up constantly.

公开(公告)号：US20220320886A1

公开(公告)日：2022-10-06

申请号：US17707780

申请日：2022-03-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guangyu XU ,  Haili LI ,  Wei ZHAO

IPC: H02J7/00 ,  G01R31/3835 ,  G01R31/367

Abstract: This application provides a method and device for detecting charging abnormality, and a storage medium. In this application, a first sampling moment corresponding to a first minimum voltage in n sampled voltages is determined based on n consecutive sampled voltages of a first cell from an end moment of an ith charging phase to an end moment of an (i+1)th charging phase in a kth charging process. A second sampling moment corresponding to a second minimum voltage in any one of the first (k−1)th charging processes can be determined in the same way. Then abnormality of the kth charging process is determined.

公开(公告)号：US20220268845A1

公开(公告)日：2022-08-25

申请号：US17563857

申请日：2021-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guangyu XU ,  Shichao LI ,  Wei ZHAO

IPC: G01R31/388 ,  H01M10/44 ,  G01R31/36

Abstract: An embodiment of this application provides a charging control method and device and a power management controller. The charging control method includes: determining whether battery status of a battery pack meets preset conditions, where the battery pack includes a plurality of battery cells, and the preset conditions are: the battery pack has been left standing for a preset duration, and an open-circuit voltage of each battery cell in the battery pack falls within a preset range; and charging the battery pack based on a charging policy corresponding to a determining result, so that a capacity of a battery cell with a highest remaining capacity in the battery pack reaches a nominal capacity of the battery cell with the highest remaining capacity.