Verfahren zur Früherkennung eines Thermischen Durchgehens einer Batteriezelle

Details

Veröffentlichungs-Nr.

EP4759606

Anmeldetag

11. Dezember 2024

Veröffentlichung

17. Juni 2026

Rechtsraum

EP

Abstract

The computer-implemented method for early identification of thermal runaway events in a battery cell within a battery pack involves several steps. Initially, it involves receiving the current and voltage of the battery cell, as well as the temperature and state of charge (SOC) level of the battery pack. Next, the method obtains the Direct Current Internal Resistance (DCIR) value based on the received current and voltage of the battery cell. This obtained DCIR value is then compared with a prestored DCIR value from a reference table, which contains multiple prestored DCIR values corresponding to different temperatures and SOC levels of the battery pack. The comparison is made within the same temperature and SOC level ranges. If the calculated DCIR value exceeds the prestored DCIR value by at least a multiple of a first threshold, a thermal runaway event is identified.

Anmelder

Firma

ABB SCHWEIZ AG

Land

🇨🇭 Schweiz