The state of internal resistance is appropriately expressed for a battery being energized. A battery management system 100 includes a battery information acquisition section 103, a voltage calculation section 104, a current fluctuation amount calculation section 109 and a resistance correction amount calculation section 111. The battery information acquisition section 103 acquires a voltage value V of a storage battery 101 being energized. The voltage calculation section 104 acquires a predicted battery voltage value V model of the storage battery 101 being energized by a method different from that of the battery information acquisition section 103. The current fluctuation amount calculation section 109 calculates a current fluctuation amount dI/dt of the storage battery 101 per unit time. Based on the comparison result of the voltage value V and the predicted battery voltage value V model and the current fluctuation amount dI/dt, the resistance correction amount calculation section 111 corrects an equivalent circuit model expressing the internal state of the storage battery 101 including a DC resistance component Ro and a polarization resistance component R p .
BATTERY MANAGEMENT SYSTEM, BATTERY SYSTEM AND HYBRID VEHICLE CONTROL SYSTEM
BATTERIEMANAGEMENTSYSTEM, BATTERIESYSTEM UND HYBRIDFAHRZEUGSTEUERUNGSSYSTEM
SYSTÈME DE GESTION DE BATTERIE, SYSTÈME DE BATTERIE SYSTÈME DE COMMANDE DE VÉHICULE HYBRIDE
18.03.2020
Patent
Elektronische Ressource
Englisch
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / 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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