2차 전지의 열화도를 정확하게 검출하면서, 엔진을 시동 가능한지의 여부도 정확하게 판정하는 것. 차량에 탑재되어 있는 2차 전지 상태를 검출하는 2차 전지 상태 검출 장치(1)에 있어서, 엔진의 정지 시에 있어서 2차 전지의 내부 저항의 값을 측정하는 측정 수단[전압 센서(11), 전류 센서(12), CPU(10a)]과, 엔진의 시동 시에 있어서 스타터 모터에 전력을 공급함으로써, 2차 전지의 전해액에 생기는 이온의 확산에 기인하는 확산 저항의 값을 추정하는 추정 수단[CPU(10a)]과, 측정 수단에 의해 측정된 내부 저항의 값에, 추정 수단에 의해 추정된 확산 저항의 값을 가산하여 얻어지는 저항값과, 엔진을 시동할 때 흐르는 시동 전류와, 2차 전지의 시동 전 전압으로부터, 엔진의 시동에 필요로 하는 전압인 시동 전압을 산출하는 산출 수단[CPU(10a)]을 가진다.

    Object: To accurately determine whether or not it is possible to start an engine while accurately detecting a degree of deterioration of a secondary battery. Solution: In a secondary battery state detecting device 1 detecting a state of a secondary battery mounted on a vehicle, a measurement unit (a voltage sensor (11), a current sensor (12), a CPU (10a)) measuring a value of an internal resistance of the secondary battery at an engine stop time; an estimation unit (CPU 10a) estimating a value of a diffusion resistance resulting from diffusion of an ion generated at an electrolytic solution of the secondary battery by supplying electric power to a starter motor at a starting time of the engine; and a calculation unit (CPU 10a) calculating a starting voltage being a voltage required for the starting of the engine from a resistance value obtained by adding the value of the diffusion resistance estimated by the estimation unit to the value of the internal resistance measured by the measurement unit, a starting current flowing when the engine is started, and a voltage before starting of the secondary battery are included.


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    Title :

    2 2 SECONDARY BATTERY STATE DETECTION DEVICE AND SECONDARY BATTERY STATE DETECTION METHOD


    Additional title:

    2차 전지 상태 검출 장치 및 2차 전지 상태 검출 방법


    Publication date :

    2015-10-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    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 / 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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