A data acquirer acquires voltage data and current data of a plurality of cells in a battery pack including the plurality of cells connected in series, or voltage data and current data of a plurality of parallel cell blocks in a battery pack including the plurality of parallel cell blocks each including a plurality of cells connected in parallel. Based on the voltage data and the current data of each of the cells or each of the parallel cell blocks, a dV/dQ estimator estimates dV/dQ indicating a differential value of the voltage with respect to the capacity of each of the cells or each of the parallel cell blocks. A determiner determines whether or not a micro-short circuit has occurred in the battery pack based on a change in variation of characteristic points of dV/dQ between the plurality of cells or the plurality of parallel cell blocks.
BATTERY ABNORMALITY DETECTION SYSTEM, BATTERY ABNORMALITY DETECTION METHOD, AND BATTERY ABNORMALITY DETECTION PROGRAM
06.03.2025
Patent
Elektronische Ressource
Englisch
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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