In a voltage measuring apparatus for a plural battery according to the present invention, each of voltage detecting ICs (21-1) to (21-5) connects a switch SW1 to a reference voltage generator 24 and supplies a reference voltage Vf from the reference voltage generator 24 to an A/D converter 26. The A/D converter 26 digitizes the reference voltage Vf, which is transmitted to a main microcomputer 33. The main microcomputer 33 finds a theoretical value of the reference voltage according to an ambient temperature, compares the theoretical value with the measured value of the reference voltage Vf, and determines whether or not the voltage detecting accuracy of the first voltage detecting IC (21-1) is good.
Voltage measuring apparatus for plural battery
2015-09-08
Patent
Electronic Resource
English
IPC: | 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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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 |
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