System zur Vorhersage der Verschlechterung einer Sekundärbatterie und Verfahren zur Vorhersage der Verschlechterung einer Sekundärbatterie

Details

Veröffentlichungs-Nr.

EP4726414

Anmeldetag

5. März 2024

Veröffentlichung

12. Dezember 2024

Rechtsraum

EP

Abstract

Provided is a secondary battery deterioration prediction system including: an acquisition unit that acquires, in each operation condition, a relationship between a charging status and an open circuit voltage of a secondary battery and a relationship between the charging status and an internal resistance of the battery; an internal state diagnosis unit that diagnoses, based on the acquired relationships, a deterioration state of a positive electrode and a negative electrode of the secondary battery in each operation condition; a life prediction formula generation unit that generates a life prediction formula based on a time series change in the obtained deterioration state; and a deterioration calculation unit that calculates deterioration of the secondary battery based on the life prediction formula. The life prediction formula generation unit generates a life prediction formula based on a time series change in a deterioration state of the positive electrode and the negative electrode in a case where a load is applied to the secondary battery.

Anmelder

Firma

Hitachi, Ltd.

Land

🇯🇵 Japan