A battery diagnosis device for a battery including a parallel connection structure of unit cells according to an aspect of the present disclosure includes a data acquisition unit configured to collect charge/discharge data including a voltage time series indicating a time-dependent change of a voltage across the battery and a current time series indicating a time-dependent change of a charge/discharge current flowing through the battery; and a data processing unit configured to determine an estimated capacity value indicating a full charge capacity of the battery based on the charge/discharge data. The data processing unit is configured to diagnose an abnormality in the parallel connection structure by monitoring a time-dependent change of the estimated capacity value.
BATTERY DIAGNOSIS DEVICE, BATTERY MANAGEMENT SYSTEM, BATTERY PACK, ELECTRIC VEHICLE, AND BATTERY DIAGNOSIS METHOD
BATTERIEDIAGNOSEVORRICHTUNG, BATTERIEVERWALTUNGSSYSTEM, BATTERIEPACK, ELEKTROFAHRZEUG UND BATTERIEDIAGNOSEVERFAHREN
DISPOSITIF DE DIAGNOSTIC DE BATTERIE, SYSTÈME DE GESTION DE BATTERIE, BLOC-BATTERIE, VÉHICULE ÉLECTRIQUE ET PROCÉDÉ DE DIAGNOSTIC DE BATTERIE
2023-10-04
Patent
Elektronische Ressource
Englisch
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