Cell voltage equalizer includes voltage detection ICs configured to measure output voltages from cells, respectively; discharge circuits (40) provided to the respective cells, and configured to discharge the output voltages from the respective cells; and a main microcomputer (33 configured: to find a state of charge of a rechargeable battery (13) on the basis of the output voltages from the cells measured by the voltage detection ICs; to judge whether or not the state of charge is a predetermined level; to find differential values by subtracting a predetermined baseline voltage from the output voltages from the cells measured by the voltage detection ICs; and to equalize the output voltages if there exists a cell whose differential value is not less than a first voltage threshold value, by use of the corresponding discharge circuit (40) . In a case where the state of charge is not the predetermined level, the main microcomputer (33) performs the equalizing process after a first waiting time has passed since the previous equalizing process. In a case where the state of charge is the predetermined level, the main microcomputer (33) performs the equalizing process after a second waiting time has passed since the previous equalizing process.
DEVICE FOR AVERAGING CELL VOLTAGE OF PLURALITY OF BATTERY PACKS
VORRICHTUNG ZUR MITTELUNG DER ZELLSPANNUNG MEHRERER BATTERIEPACKS
DISPOSITIF DE CALCUL DE MOYENNE DE TENSION DE CELLULE D'UNE PLURALITÉ DE BLOCS DE BATTERIE
10.10.2018
Patent
Elektronische Ressource
Englisch
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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