PROBLEM TO BE SOLVED: To provide a battery state diagnostic device and a battery internal resistance measurement method, which can suppress the impairment of a drive feeling while improving measurement accuracy of an internal resistance of a battery.SOLUTION: A battery state diagnostic device comprises: a battery 3 mounted on a vehicle 1 provided with a supercharger 9 for supercharging intake air of an internal combustion engine 8 and an electric supercharger 7; and a control device 6 for driving the electric supercharger 7, by supplying power to an electric motor 5 from the battery 3. When the vehicle 1 is traveling in a state in which a speed of the vehicle 1 is equal to or greater than a predetermined value, or a rotation speed of the internal combustion engine 8 is equal to or greater than a predetermined value, the control device 6 measures an internal resistance of the battery 3 from a voltage of the battery 3 and a current flowing through the battery 3 when the power is supplied to the electric motor 5.
【課題】バッテリの内部抵抗の測定精度を向上させつつ、運転フィーリングが損なわれることを抑えることが可能なバッテリ状態診断装置及びバッテリ内部抵抗測定方法を提供することを目的とする。【解決手段】内燃機関8の吸気を過給する過給機9及び電動過給機7を備える車両1に搭載されるバッテリ3と、バッテリ3から電動機5へ電力を供給させることにより、電動過給機7を駆動させる制御装置6とを備えてバッテリ状態診断装置を構成し、制御装置6は、車両1の速度が所定値以上又は内燃機関8の回転数が所定値以上で車両1が走行しているときに電動機5へ電力を供給させている際のバッテリ3の電圧及びバッテリ3に流れる電流からバッテリ3の内部抵抗を測定する。【選択図】図1
BATTERY STATE DIAGNOSTIC DEVICE, AND BATTERY INTERNAL RESISTANCE MEASUREMENT METHOD
バッテリ状態診断装置及びバッテリ内部抵抗測定方法
2015-08-06
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / 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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