BATTERY CONTROL DEVICE AND VEHICLE

• Main Author: KOIKE TETSUO
• Format: Patent
• Language: English
• Published: 01.12.2011
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PERFORMING OPERATIONS; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

PROBLEM TO BE SOLVED: To detect the remaining capacity or the degree of deterioration of a secondary battery which is inbuilt in a vehicle, with greater precision.SOLUTION: A battery control device includes: a discharge control unit which, when the running of a vehicle is stopped, discharges the secondary battery which is inbuilt in the vehicle until the voltage value of the secondary battery reaches a predetermined discharge termination voltage value; a first remaining capacity identification unit which identifies the remaining capacity of the secondary battery prior to discharge by the discharge control unit as a first remaining capacity on the basis of a predetermined identification method; a discharge amount measurement unit which measures the discharge amount of the secondary battery; a second remaining capacity identification unit which identifies the remaining capacity of the secondary battery prior to discharge by the discharge control unit as a second remaining capacity on the basis of the discharge amount measured by the discharge amount measurement unit during discharge by the discharge control unit; and an identification method revision unit which revises the identification method on the basis of the difference between the first remaining capacity and the second remaining capacity.