A battery management circuit (105) includes: a reference signal generator (109) that generates a first reference frequency signal and a second reference frequency signal having a phase different from a phase of the first reference frequency signal; an alternating-current superimposer (104) that superimposes an alternating current on the secondary battery, the alternating current having a frequency component of the first reference frequency signal; a voltage measurer (115) that measures a voltage of the secondary battery by performing sampling using a frequency higher than a frequency of the first reference frequency signal; a current measurer (112) that measures a current of the secondary battery by performing sampling using a frequency higher than the frequency of the first reference frequency signal; and a converter (118b) that converts each of results of measurements by the voltage measurer (115) and the current measurer (112) into a real part component and an imaginary part component of each of a complex voltage and a complex current, by multiplying the result of the measurement by the first reference frequency signal and the second reference frequency signal.
BATTERY MANAGEMENT CIRCUIT, BATTERY MANAGEMENT DEVICE, AND BATTERY MANAGEMENT NETWORK
BATTERIEVERWALTUNGSSCHALTUNG, BATTERIEVERWALTUNGSVORRICHTUNG UND BATTERIEVERWALTUNGSNETZWERK
CIRCUIT DE GESTION DE BATTERIE, DISPOSITIF DE GESTION DE BATTERIE ET RÉSEAU DE GESTION DE BATTERIE
2023-02-01
Patent
Electronic Resource
English
IPC: | 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 / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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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