Vorrichtung und Verfahren zur Soc-Schätzung unter Verwendung eines Lfp-Batteriemodells

Details

Veröffentlichungs-Nr.

EP4779334

Anmeldetag

11. Dezember 2025

Veröffentlichung

22. Juli 2026

Rechtsraum

EP

Abstract

Disclosed are an apparatus and a method of estimating a state of charge (SOC) using a lithium iron phosphate (LiFePO₄, LFP) battery model. The apparatus includes: a lithium state recorder configured to record the state of lithium (Li) in a positive electrode active material of an LFP battery according to charging or discharging of the LFP battery; and a battery model generator configured to generate a battery model of the LFP battery based on the recorded state of the lithium in the positive electrode active material. The battery model generator may generate the battery model by modeling the LFP battery through adding an additional voltage increment corresponding to a charging or discharging path of the LFP battery to an open circuit voltage (OCV), in consideration of the state of the lithium in the positive electrode active material.

Anmelder

Firma

Samsung SDI Co., Ltd.

Land

🇰🇷 Südkorea