公开(公告)号：US20230344246A1

公开(公告)日：2023-10-26

申请号：US18344099

申请日：2023-06-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wei YE ,  Bo ZENG ,  Shuting SUN ,  Jihai XIE ,  Yongchao LI

IPC: H02J7/00

CPC classification number: H02J7/0016 ,  H02J7/007184 ,  H02J7/0047 ,  H02J7/00714

Abstract: A discharging control method and a charging control method for a battery pack control system are provides. The battery pack control system includes a master battery management unit and multiple slave battery management units. The master battery management unit controls the slave battery management units. The slave battery management units controls battery packs to connect to an operating circuit or disconnect from the operating circuit. In the discharging control method and the charging control method, a loop current generated from connecting a battery pack to an operating circuit is predicted each time before a slave battery management unit controls the battery pack to connect to the operating circuit, and the battery pack is controlled to connect to the operating circuit with the generated loop current within a safe value range.

公开(公告)号：US20230253816A1

公开(公告)日：2023-08-10

申请号：US17963917

申请日：2022-10-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haijiang WANG ,  Shuting SUN ,  Shuai HUANG

IPC: H02J7/00 ,  G01R31/387 ,  G01R31/367

CPC classification number: H02J7/007194 ,  G01R31/387 ,  G01R31/367 ,  H02J7/00712

Abstract: This application discloses a charging duration determining method, a BMS, a battery, and an electrical device. The method includes: determining a charge temperature of a battery; estimating, in a case that the charge temperature exceeds a first specified range, a first duration to be taken to adjust the charge temperature of the battery to the first specified range; estimating a second duration to be taken to charge the battery to a target SOC after the charge temperature of the battery has been adjusted to the first specified range; and determining, based on a charge start time of the battery, the first duration, and the second duration, a duration to be taken to charge the battery to the target SOC. The charging duration determined for the battery according to this application is more accurate, and facilitates users to accurately learn the charging status of the battery in time.

公开(公告)号：US20230228822A1

公开(公告)日：2023-07-20

申请号：US17950096

申请日：2022-09-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haijiang WANG ,  Shuting SUN ,  Shichang ZHANG

IPC: G01R31/388 ,  G01R31/36 ,  H01M10/42

CPC classification number: G01R31/388 ,  G01R31/3648 ,  G01R31/3646 ,  H01M10/425 ,  H01M2010/4271

Abstract: A method for determining a charging time includes obtaining a maximum monomer voltage of a cell of a battery, and under a condition that the maximum monomer voltage is determined to be greater than or equal to a value, determining, based on a charging voltage of the battery, the charging time of the battery.

公开(公告)号：US20230204672A1

公开(公告)日：2023-06-29

申请号：US18058008

申请日：2022-11-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haijiang WANG ,  Shuting SUN ,  Xu LIANG

IPC: G01R31/3842 ,  H02J7/00

CPC classification number: G01R31/3842 ,  H02J7/0047

Abstract: A method for determining a remaining charging time of a battery. The method includes obtaining a first charging current and a second charging current. The first charging current is a present charging current of the battery, and the second charging current is a charging current of the battery when the battery is fully charged. The method further includes determining an average charging current value based on the first charging current and the second charging current, and determining the remaining charging time based on the average charging current value.

公开(公告)号：US20220329094A1

公开(公告)日：2022-10-13

申请号：US17364971

申请日：2021-07-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shuting SUN ,  Haijiang Wang ,  Wei Zhao

IPC: H02J7/00 ,  G01R31/36 ,  H01M10/44

Abstract: This application provides a method and a device for estimating a remaining charging time of a battery, and a battery management system. The method includes: determining a minimum charging time of each type of battery cell at a Kth charging phase based on a charge request current value of each type of battery cell at the Kth charging phase; and determining the remaining charging time of the battery when the Kth charging phase of any type of battery cell in the battery is a target state-of-charge phase, where the remaining charging time of the battery is a smallest one of accumulation values, each accumulation value being an accumulation of minimum charging times of a type of battery cell in the battery at all charging phases.