POWER STORAGE SYSTEM, CHARGING CONTROL METHOD, AND PROGRAM

WIPO Patent Application WO/2023/182086

A1

The purpose of the present disclosure is to suppress deterioration of a power storage unit. A power storage system (1) according to the present disclosure comprises a detection unit (21), a determination unit (22), and a charging control unit (23). The detection unit (21) acquires an electrical characteristic value that changes in accordance with deterioration of a power storage unit (11). The determination unit (22) determines the deterioration state of the power storage unit (11) on the basis of a detection result by the detection unit (21). When the determination unit (22) determines that the power storage unit (11) is in a first stage of the deterioration state, the charging control unit (23) sets, to a first voltage, a charge voltage for charging the power storage unit (11) by a charging circuit. When the determination unit (22) determines that the power storage unit (11) is in a second stage of the deterioration state, where deterioration is further progressed from the first stage, the charging control unit (23) sets the charge voltage to a second voltage higher than the first voltage. When the determination unit (22) determines that the power storage unit (11) is in a third stage of the deterioration state, where deterioration is further progressed from the second stage, the charging control unit (23) sets the charge voltage to a third voltage higher than the second voltage.

NAKAJI MASAHIRO
MITANI YOHSUKE

PCT/JP2023/009991

September 28, 2023

March 15, 2023

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PANASONIC IP MAN CO LTD (JP)

H02J7/04; B60R16/04; H02J7/00

WO2013094344A1

2013-06-27

JP2002325373A	2002-11-08
JP2010124634A	2010-06-03

HOKUTO PATENT ATTORNEYS OFFICE (JP)

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