EQUALIZATION METHOD AND DEVICE FOR BATTERY MODULE, BATTERY MODULE, AND POWER SUPPLY MANAGEMENT CONTROLLER

Title:

EQUALIZATION METHOD AND DEVICE FOR BATTERY MODULE, BATTERY MODULE, AND POWER SUPPLY MANAGEMENT CONTROLLER

Document Type and Number:

WIPO Patent Application WO/2022/141292

Kind Code:

A1

Abstract:

Embodiments of the present application provide an equalization method and device for a battery module, a battery module, and a power supply management controller. The method comprises: obtaining first charging voltages of a first cell and second charging voltages of a second cell; determining whether the first cell and the second cell enter respective corresponding full charge intervals; if the first cell enters but the second cell does not enter the full charge interval, discharging the first cell until the second cell enters the corresponding full charge interval; if the first cell does not enter but the second cell enters the full charge interval, determining whether the maximum value of the first charging voltages of single cells in the first cell is greater than a third preset value; if yes, discharging the second cell until the first cell enters the corresponding full charge interval; if not, controlling the two cells to be stood for a preset period of time; and discharging the first cell and the second cell after being stood for the preset period of time until SOCs of the single cells in the first cell and the second cell enter the same state.

Inventors:

PENG LEI (CN)
XU GUANGYU (CN)
ZHANG SHICHANG (CN)
LI SHICHAO (CN)

Application Number:

PCT/CN2020/141793

Publication Date:

July 07, 2022

Filing Date:

December 30, 2020

Export Citation:

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Assignee:

CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)

International Classes:

H02J7/00; H01M10/44

Foreign References:

CN102938570A	2013-02-20
CN108988421A	2018-12-11
CN103213510A	2013-07-24
CN101160688A	2008-04-09
EP2055523A2	2009-05-06
EP1892813A2	2008-02-27

Other References: