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Title:
SERIAL TYPE CHARGING AND DISCHARGING DEVICE, AND CHARGING AND DISCHARGING METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2024/049249
Kind Code:
A1
Abstract:
A serial type charging and discharging device according to the present invention is for charging and discharging a plurality of battery cells connected in series, and comprises: a tray; a cooling fan; a power source; a charging and discharging control board; and a control unit. A charging and discharging control algorithm mounted in the control unit comprises first to N-th charging and discharging steps (wherein N is an integer from 2 to 10), wherein each charging and discharging step is configured to perform charging and discharging in a constant current mode and gradually reduce a charging and discharging current value. The serial charging and discharging device according to the present invention performs a plurality of charging and discharging steps in a constant current mode, and is configured to reduce a charging and discharging current value of each charging and discharging step, thereby having an effect similar to charging and discharging in a constant voltage mode. Also, since there is no need to repeat charging and discharging in a constant voltage mode as many as the number of batteries connected in series, the time required for charging and discharging may be reduced.

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Inventors:
LEE HAN JIN (KR)
LEE CHAN HEE (KR)
JANG MIN YOUNG (KR)
JEONG YEON WOO (KR)
YEO CHANG SIN (KR)
Application Number:
PCT/KR2023/013023
Publication Date:
March 07, 2024
Filing Date:
August 31, 2023
Export Citation:
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Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H02J7/00; G01R31/3835
Foreign References:
KR102431931B12022-08-16
KR20120028350A2012-03-22
KR20120117413A2012-10-24
KR20140134925A2014-11-25
KR102429765B12022-08-05
KR20220110611A2022-08-08
KR20230113881A2023-08-01
Attorney, Agent or Firm:
KIM, Hong Gyun (KR)
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