Title:
SERIES FORMATION AND CAPACITY GRADING CIRCUIT CAPABLE OF REALIZING CONSTANT-VOLTAGE CHARGING
Document Type and Number:
WIPO Patent Application WO/2023/045269
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of battery formation, and particularly relates to a series formation and capacity grading circuit capable of realizing constant-voltage charging. The circuit comprises a bidirectional constant-current power supply, and a plurality of charging modules, wherein the plurality of charging modules are connected in series and are then connected to the bidirectional constant-current power supply; the charging module comprises a bypass switch and a battery; the bypass switch is connected to the battery; and the bypass switch is used for placing the battery inside a charging and discharging loop or outside the charging and discharging loop. Provided in the present invention is a series formation and capacity grading circuit capable of realizing constant-voltage charging, which circuit realizes independent control of the charging current of battery cells in a series loop, and meets the requirements of the formation and capacity grading processes for constant-voltage charging during actual production, so that series formation and capacity grading technologies are practical.
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Inventors:
HU YONG (CN)
LIU JUNJUN (CN)
LIU JUNJUN (CN)
Application Number:
PCT/CN2022/079700
Publication Date:
March 30, 2023
Filing Date:
March 08, 2022
Export Citation:
Assignee:
XI AN KUAIZHOU ELECTROMECHANICAL TECH CO LTD (CN)
International Classes:
H01M10/44; H02J3/38; H02J7/00
Domestic Patent References:
| WO2021113161A2 | 2021-06-10 |
Foreign References:
| CN113852161A | 2021-12-28 | |||
| CN109273788A | 2019-01-25 | |||
| CN112259815A | 2021-01-22 | |||
| CN110474118A | 2019-11-19 | |||
| CN113306450A | 2021-08-27 | |||
| CN206442129U | 2017-08-25 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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