The present invention provides a system for estimating state of health (SOH) of a battery of an electric vehicle, capable of accurately and reliably evaluating a service life of the battery. The present invention relates to the system for estimating the SOH of the battery of the electric vehicle. For example, disclosed is the system for estimating the SOH of the battery of the electric vehicle comprising: a charging recognition unit to recognize the charge of the battery and to output a charging recognition signal; a discharging instruction unit to temporarily stop the charge of the battery if the battery reaches one or more specific charging voltage values and to operate one or more power consumption devices installed in the electric vehicle to discharge the battery as one or more specific current values for a preset period of time; and an SOH estimating unit to measure each voltage of the battery according to the specific current value when the battery is discharged and to estimate the SOH of the battery based on the measured change of the voltage.
본 발명은 전기차량의 배터리 SOH(state of health) 추정 시스템에 관한 것이다. 일례로, 상기 배터리의 충전을 인식하고 충전인식신호를 출력하는 충전 인식부; 상기 충전인식신호를 수신하고, 상기 배터리가 적어도 하나의 특정 충전전압 값에 도달하면, 상기 배터리의 충전을 일시 중지시키고, 일정 시간 동안 적어도 하나의 특정 전류 값으로 상기 배터리가 방전되도록 상기 전기차량에 설치된 적어도 하나의 전력소비장치를 작동시키는 방전 지시부; 및 상기 배터리의 방전 시 상기 특정 전류 값에 따른 상기 배터리의 전압을 각각 측정하고, 측정된 상기 전압의 변화에 기초하여 상기 배터리의 SOH를 추정하는 SOH 추정부를 포함하는 배터리 SOH 추정 시스템을 개시한다.
SYSTEM FOR ESTIMATING STATE OF HEALTH OF BATTERY OF ELECTRIC VEHICLE
전기차량의 배터리 SOH 추정 시스템
2016-07-18
Patent
Electronic Resource
Korean
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