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KR20180064107A - Method for diagnosing status of battery using battery charge amount for vehicles - Google Patents

Method for diagnosing status of battery using battery charge amount for vehicles Download PDF

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Publication number
KR20180064107A
KR20180064107A KR1020160164302A KR20160164302A KR20180064107A KR 20180064107 A KR20180064107 A KR 20180064107A KR 1020160164302 A KR1020160164302 A KR 1020160164302A KR 20160164302 A KR20160164302 A KR 20160164302A KR 20180064107 A KR20180064107 A KR 20180064107A
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battery
vehicle
charge
amount
ecu
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김진성
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현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/0315—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for using multiplexing techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/3644—Constructional arrangements
    • G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3828—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/90—Driver alarms

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

본 발명은 배터리 충전량을 이용한 차량용 배터리 상태 판정 방법에 관한 발명으로서, 차량의 이그니션 키의 ON 이후 차량의 주행 중 배터리에 충방전 되는 전류를 검출하여 충전 전류량을 적산하는 단계; 차량의 이그니션 OFF 시 총 적산된 충전 전류량으로부터 배터리 예상 충전량(SoC, State Of Charge)을 계산하는 단계; 계산된 배터리 예상 충전량에 미리 정해진 이상 판정 팩터를 곱하여 기준값을 계산하는 단계; 배터리 OCV(Open Circuit Voltage)를 이용하여 차량의 이그니션 OFF 시의 실제 배터리 충전량을 계산하는 단계;를 포함하고, 기준값이 실제 배터리 충전량을 초과하였는지 여부를 판단하여, 차량의 배터리의 이상 여부를 판단하도록 한 것을 특징으로 한다. The present invention relates to a method of determining a state of a battery for a vehicle using a charged amount of a battery, the method comprising: detecting a current charged / discharged to / from a battery during driving of the vehicle after the ignition key of the vehicle is turned on; Calculating a state of charge (SoC) of the battery from a total amount of charge current when the ignition of the vehicle is OFF; Calculating a reference value by multiplying the calculated estimated battery charge by a predetermined anomaly determining factor; Calculating an actual battery charge amount when the ignition of the vehicle is turned off by using a battery OCV (Open Circuit Voltage), determining whether the reference value exceeds an actual battery charge amount, and determining whether the battery of the vehicle is abnormal .

Description

배터리 충전량을 이용한 차량용 배터리 상태 판정 방법{METHOD FOR DIAGNOSING STATUS OF BATTERY USING BATTERY CHARGE AMOUNT FOR VEHICLES}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for determining a battery state of a vehicle,

본 발명은 차량의 배터리 상태 판정 방법에 관한 것으로서 보다 상세하게는, 배터리의 충전량을 이용하여 배터리의 수명 및 상태 이상 여부를 판정하고, 배터리 상태 이상 판정 시에 이에 대응하기 위한 제어 방법에 관한 발명이다. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for determining a battery state of a vehicle, and more particularly, to a control method for determining a life time and a state abnormality of a battery using a charged amount of the battery, .

도 2에서도 도시된 바와 같이, 최근에는, 자동차의 연비 향상을 위하여 가속이나 정속 주행과 같은 평시에 발전 전압을 낮게 하고 감속시 충전을 많이 하는 1.5세대/2세대 발전제어를 적용하고 있으며, 이와 같은 추세는 확대되고 있다. As shown in FIG. 2, recently, 1.5 generation / second generation power generation control is applied in order to improve the fuel efficiency of the automobile, in which the generation voltage is lowered at a normal time such as acceleration or constant speed running and charging is increased during deceleration. The trend is expanding.

그러나 도 2에서도 도시된 바와 같이, 이러한 1.5세대/2세대 발전 제어의 경우 충전량이 감소되어, 평상시 발전전압을 낮게 하는 경우 배터리의 충전 전압이 낮아 배터리의 성능이 악화될 위험성이 있다. 나아가, 배터리 수명/상태가 나쁜 배터리 경우 감속시에도 충전이 원활히 이루어지지 못하여, 결국 배터리는 방전 상태로 빠지게 되는 문제가 있다. 따라서, 1.5세대/2세대 발전 제어에서는 자동차에 장착된 배터리의 수명/상태를 정확히 판정하는 것이 매우 중요하다. However, as shown in FIG. 2, in the case of 1.5 generation / second generation power control, when the charge amount is reduced and the generation voltage is normally lowered, the charge voltage of the battery is low and the battery performance is deteriorated. Further, in a battery having a bad battery life / condition, charging can not be smoothly performed even when the battery is decelerated, and the battery is eventually discharged to a discharged state. Therefore, it is very important to accurately determine the life / condition of the battery mounted in the vehicle in the 1.5th generation / second generation control.

한편, 특허문헌(대한민국 등록특허 제10-0384160호)에서도 개시된 바와 같이, 종래에는 자동차에 장착된 배터리 센서에 의해 측정된 배터리의 내부저항을 이용하여 배터리의 수명/상태(SoH :State of Health)를 판정하고 있으나 정확성이 떨어져 그 결과를 실제 발전제어에 이용하고 있지 않다. 또한 차량 주행 거리를 이용하여 배터리의 수명을 추정해 볼 수 있으나, 이 경우, 배터리 교체한다면, 정확한 배터리 수명/상태를 확인할 수 없는 문제가 있다. Meanwhile, as disclosed in the patent document (Korean Patent Registration No. 10-0384160), conventionally, the battery life / state (SoH) of the battery is measured using the internal resistance of the battery, However, the accuracy is low and the result is not used for actual power generation control. In addition, although it is possible to estimate the battery life by using the driving distance of the vehicle, in this case, there is a problem that the battery life / state can not be accurately confirmed if the battery is replaced.

특허문헌: 대한민국 등록특허 제10-0384160호(2003.5.2)Patent Document: Korean Patent No. 10-0384160 (Feb.

본 발명은 상기한 과제를 해결하기 위해 안출된 것으로서, 차량의 주행 시 배터리의 충전량을 기준으로 하여 배터리의 이상 유무를 간이한 방법에 의해 검출하고 그 검출 결과를 근거로 차량의 내구성 향상 및 시동성을 향상시킬 수 있는 검출 방법 및 제어 방법을 제공하는 것을 목적으로 한다. SUMMARY OF THE INVENTION The present invention has been conceived to solve the above problems, and it is an object of the present invention to provide a method and apparatus for detecting an abnormality of a battery based on a charged amount of the battery when the vehicle is traveling, And an object of the present invention is to provide a detection method and a control method that can improve the performance.

상기한 과제를 해결하기 위한 본 발명에 따른 배터리 충전량을 이용한 차량용 배터리 상태 판정 방법은 차량의 이그니션 키의 ON 이후 차량의 주행 중 배터리에 충방전 되는 전류를 검출하여 충전 전류량을 적산하는 단계; 차량의 이그니션 OFF 시 총 적산된 충전 전류량으로부터 배터리 예상 충전량(SoC, State Of Charge)을 계산하는 단계; 계산된 배터리 예상 충전량에 미리 정해진 이상 판정 팩터를 곱하여 기준값을 계산하는 단계; 배터리 OCV(Open Circuit Voltage)를 이용하여 차량의 이그니션 OFF 시의 실제 배터리 충전량을 계산하는 단계; 기준값이 실제 배터리 충전량을 초과하였는지 여부를 판단하여, 차량의 배터리의 이상 여부를 판단하는 단계를 포함하는 것을 특징으로 한다. According to another aspect of the present invention, there is provided a method for determining a state of a vehicle using a battery charging amount, the method comprising: detecting a current charged / discharged to / from a battery during driving of the vehicle after turning on an ignition key of the vehicle; Calculating a state of charge (SoC) of the battery from a total amount of charge current when the ignition of the vehicle is OFF; Calculating a reference value by multiplying the calculated estimated battery charge by a predetermined anomaly determining factor; Calculating an actual battery charge amount when the ignition of the vehicle is OFF using a battery OCV (Open Circuit Voltage); Determining whether the reference value exceeds an actual battery charge amount, and determining whether the battery of the vehicle is abnormal.

바람직하게는 상기 기준값이 상기 실제 배터리 충전량을 초과한 경우, ECU(Electronic Control Unit)는 배터리 상태 이상 판정 신호를 출력한다. Preferably, when the reference value exceeds the actual battery charge amount, the ECU (Electronic Control Unit) outputs a battery state abnormality determination signal.

바람직하게는, 상기 ECU로부터 배터리 상태 이상 판정 신호가 출력되는 경우, 클러스터 상에서 암전류 경고등을 점등하거나 또는 음성 경고 등을 통해 운전자에게 경고하는 것을 특징으로 한다. Preferably, when a battery state abnormality determination signal is output from the ECU, a dark current warning lamp is lit on a cluster or a warning is given to a driver through a voice warning or the like.

바람직하게는, 상기 ECU로부터 배터리 상태 이상 판정 신호가 출력되는 경우, 알터네이터의 목표 전압을 상향 조정하여 배터리의 충전량을 상승시키는 것을 특징으로 한다. Preferably, when the battery state abnormality determination signal is outputted from the ECU, the target voltage of the alternator is adjusted upward to increase the charged amount of the battery.

본 발명에 따른 차량용 배터리 상태 판정 방법에 의하면, 차량에 기 설치된 배터리 센서를 이용하여 차량의 주행 중 배터리의 충전 전류를 적산하여 배터리 충전량을 예측하고, 이를 실제 배터리 충전량과 대비함으로써, 간이하고, 정확하게 배터리 이상 여부를 판정할 수 있다. According to the vehicle battery state determination method of the present invention, the battery charge amount is estimated by accumulating the charge current of the battery during running of the vehicle using a battery sensor installed in the vehicle, and compared with the actual battery charge amount, It is possible to determine whether or not the battery is abnormal.

또한, 본 발명에 따른 차량용 배터리 상태 판정 방법에 의하면, 배터리 이상 판단 시에, 알터네이터의 목표 발전 전압을 상향시키도록 제어하여, 이후의 차량의 주차 시에 배터리의 방전 위험에 충분히 대응할 수 있어 시동성을 향상시킬 수 있다. Further, according to the vehicle battery state determining method according to the present invention, when the battery abnormality is determined, the target generated voltage of the alternator is controlled to be raised so as to sufficiently cope with the discharge risk of the battery at the time of parking the following vehicle, Can be improved.

또한, 본 발명에 따른 차량용 배터리 상태 판정 방법에 의하면, 배터리 이상 판단 시에, 클러스터의 배터리 경고등을 점등시키는 것과 같은 방식으로 운전자에게 암전류 과다를 경고하여 운전자로 하여금 충분히 대응 가능하도록 유도하여 운전자에게 편의성을 제공할 수 있다. According to the vehicle battery state determining method of the present invention, when the battery abnormality is determined, the driver is warned of excessive dark current in such a manner that the battery warning lamp of the cluster is turned on to induce the driver to sufficiently cope with it, Can be provided.

도 1은 본 발명에 따른 차량용 배터리 상태 판정 방법이 적용되는 차량의 전력 공급 구조를 간략하게 도시한 도면이다.
도 2는 최근 차량용 배터리 발전 제어의 경향을 도시하는 도면이다.
도 3은 본 발명에 따른 차량용 배터리 상태 판정 방법을 도시하는 순서도이다. FIG. 1 is a view schematically showing a power supply structure of a vehicle to which a method for determining a state of battery for a vehicle according to the present invention is applied.
2 is a diagram showing a tendency of recent battery power generation control for a vehicle.
3 is a flowchart showing a method for determining a state of battery for a vehicle according to the present invention.

본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세하게 설명하면 다음과 같다. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 차량용 배터리 상태 판정 방법이 적용되는 차량의 전력 공급 구조를 간략하게 도시한 도면이다. FIG. 1 is a view schematically showing a power supply structure of a vehicle to which a method for determining a state of battery for a vehicle according to the present invention is applied.

차량에는 차량의 제어를 위한 각종 전자 장치(40)가 탑재되며, 차량에 장착된 각종 전자 장치(40) 등에 구동 전력을 공급하기 위하여 배터리(20)와 알터네이터(50)가 장착된다. Various electronic devices 40 for controlling the vehicle are mounted on the vehicle, and a battery 20 and an alternator 50 are mounted to supply driving electric power to various electronic devices 40 mounted on the vehicle.

알터네이터(50)는 자동차의 동력원인 엔진에 의해 구동되는데, 엔진의 출력축과 연결되어 엔진으로부터의 출력으로부터 소정의 크기의 전압을 생성하고, 알터네이터(50)로부터 생성된 전압은 배터리(20)에 충전된다. The alternator 50 is driven by an engine which is a power source of the automobile. The alternator 50 is connected to the output shaft of the engine to generate a voltage of a predetermined magnitude from the output from the engine. A voltage generated from the alternator 50 is charged do.

그리고, 배터리 전류, 전압, 온도 및 충전량(SoC)를 계산하기 위해 스마트 배터리 센서 또는 아날로그 배터리 센서와 같은 배터리 센서(30)가 배터리에 장착된다. Then, a battery sensor 30 such as a smart battery sensor or an analog battery sensor is mounted on the battery to calculate battery current, voltage, temperature, and charge amount (SoC).

ECU(10)는, 차량에 탑재된 전자 장치(40)등을 제어하는 역할을 수행한다. 한편, 알터네이터(50)의 발전 제어 또한 ECU(10)에 의해 이루어진데, ECU(10)에 의한 알터네이터(50)의 발전 제어는, 배터리 센서(20)에 의해 측정된, 배터리 온도, 전압, 전류, 및 배터리 충전 상태를 이용하여 알터네이터(50)의 목표 전압을 설정하고, 목표 전압에 따라 감속 및 정속 시에 발전량을 증대시키고, 가속 및 등판 시에는 발전량을 감소시키도록 알터네이터(50)를 제어함으로써 이루어진다. The ECU 10 plays a role of controlling the electronic device 40 or the like mounted on the vehicle. On the other hand, generation control of the alternator 50 is also performed by the ECU 10. The generation control of the alternator 50 by the ECU 10 is performed based on the battery temperature, the voltage, the current The alternator 50 is controlled to set the target voltage of the alternator 50 using the charge state of the battery and to increase the amount of generated electricity at the time of deceleration and constant speed according to the target voltage and decrease the amount of generated electricity at the time of acceleration and back- .

클러스터(60)는 주행 상황이나 차량 이상 등을 표출하는 표시 장치로서, ECU(10)와 CAN으로 연결되어, ECU(10)가 차량에 탑재된 전자 장치(40), 배터리(30) 등 차량 구성 장비의 이상을 판정하였을 때에 그 결과를 출력하는 역할을 수행한다. The cluster 60 is a display device that displays a running situation or a vehicle abnormality or the like and is connected to the ECU 10 through a CAN so that the ECU 10 can control the vehicle 10 such as the electronic device 40, And outputs the result when it is judged that the apparatus is abnormal.

도 3은 본 발명에 따른 차량용 배터리 상태 판정 방법을 도시하는 순서도이다. 3 is a flowchart showing a method for determining a state of battery for a vehicle according to the present invention.

도 2에서 도시된 내용에 따르면, 먼저 ECU(10)는 이그니션 키가 ON 되었는지 여불를 판정(S100)한다. 이그니션 키가 ON된 경우, 엔진이 구동되어 알터네이터(50)를 통해 전환된 전압이 배터리(20)로 충전되게 되는바, 이때부터 차량용 배터리 상태를 판정하기 위한 제어를 시작하도록 하는 것이다. According to the contents shown in Fig. 2, the ECU 10 first determines whether the ignition key is ON or not (S100). When the ignition key is turned on, the engine is driven and the voltage converted through the alternator 50 is charged by the battery 20. From this time, the control for determining the state of the battery for the vehicle is started.

이그니션 키가 ON 된 것으로 판단되는 경우 ECU(10)는 배터리 센서(30)를 통해, 차량의 주행 시의 검출된 배터리(20)의 충방전 전류량을 적산한다(S120). When it is determined that the ignition key is ON, the ECU 10 accumulates the amount of charging / discharging current of the battery 20 detected during running of the vehicle through the battery sensor 30 (S120).

이후, ECU(10)는 이그니션 키가 다시 OFF 되는지 여부를 판단한다(S130).이그니션 키가 OFF 되면 엔진의 구동이 멈추고 배터리(20)의 충전 동작도 멈추게 된다. 따라서, ECU(10)는 이그니션 키가 OFF 되는 시점까지 적산된 배터리(20)의 충방전 전류량으로부터, 이그니션 키가 ON된 시점으로부터 OFF 된 시점까지 배터리의 충전량을 계산해 낼 수 있다. 이러한 차량의 주행 시의 배터리의 충전량과, 이그니션 키가 ON된 시점에서의 배터리의 기 충전량의 값으로부터 이그니션 키가 OFF된 시점에서의 예상 배터리 충전량을 계산해 낼 수 있다(S140).Thereafter, the ECU 10 determines whether the ignition key is turned OFF again (S130). When the ignition key is turned OFF, the engine is stopped and the charging operation of the battery 20 is stopped. Therefore, the ECU 10 can calculate the charged amount of the battery from the amount of charging / discharging current of the battery 20 accumulated until the ignition key is turned OFF to the time when the ignition key is turned ON to the time when the ignition key is turned OFF. The estimated battery charge amount at the time when the ignition key is turned off can be calculated from the value of the battery charging amount at the time of running of the vehicle and the value of the battery charging amount at the time when the ignition key is turned ON (S140).

다음으로 ECU(10)는 계산된 예상 배터리 충전량을 미리 정해진 배터리 이상 여부 판정 펙터와 곱하여 배러리 이상 여부를 판정하기 위한 기준값을 계산한다(S150). 배터리 이상 여부 판정 펙터는 배터리의 충전 용량, 발전 제어의 형태 등을 고려하여, 목표 충전량 대비 실제 충전량이 얼마나 열화된 경우에 배터리에 이상이 발생한 것으로 판정할 것인지 여부를 결정하는 인자이다. 계산된 기준값은 후술하는 바와 같이, 배터리 이상 여부를 판단하기 위한 기준이 된다. 예컨대, 실제 배터리 충전량이 예상 배터리 충전량의 80% 미만인 경우에 배터리 이상으로 판정하는 경우, 배터리 이상 여부 판정 펙터는 0.8이 된다.Next, the ECU 10 multiplies the calculated estimated battery charge amount by a predetermined battery abnormality determination factor, and calculates a reference value for determining whether or not the battery abnormality is present (S150). The battery abnormality determination factor is a factor that determines whether or not an abnormality has occurred in the battery when the actual charge amount with respect to the target charge amount deteriorates in consideration of the charge capacity of the battery and the form of power generation control. The calculated reference value is used as a criterion for determining whether or not the battery is abnormal, as will be described later. For example, when the actual battery charge amount is less than 80% of the estimated battery charge amount and the battery is determined to be abnormal, the battery abnormality determination factor is 0.8.

ECU(10)는 상기한 예상 배터리 충전량의 연산 과정과 더불어, 이그니션 키 OFF 시, 배터리(20)의 실제 충전량을 측정된 배터리 OCV(Open Circuit Voltage)를 이용하여 계산한다(S160). In addition to the calculation of the estimated battery charge amount, the ECU 10 calculates the actual charge amount of the battery 20 using the measured OCV (Open Circuit Voltage) when the ignition key is turned off (S160).

배터리가 열화된 상태에서는 충전 성능이 저하되기 때문에 실제 배터리 충전량은, 전류 적산량을 이용한 예상 배터리 충전량에 못미치게 된다. 따라서, ECU(10)는 앞서 계산된 기준값과 실제 배터리 충전량을 대비하고(S170), 실제 배터리 충전량이 기준값에 못미치는 경우 배터리의 수명 또는 상태에 이상이 발생한 것으로 판정하여, 이를 신호로 출력한다(S180).The charging performance deteriorates in a state where the battery is deteriorated, so that the actual battery charge amount falls short of the estimated battery charge amount using the current integrated amount. Therefore, the ECU 10 compares the calculated reference value with the actual battery charge amount (S170), and determines that an abnormality has occurred in the life or condition of the battery when the actual battery charge amount is less than the reference value, and outputs it as a signal S180).

그리고, 배터리 이상 판정 신호가 출력되는 경우, ECU(10)는 클러스터(60) 상에서 배터리 이상 경고등이 점등되게 하거나 또는 음성 경고 등을 통해 배터리 이상 상태를 운전자에게 경고하도록 한다(S180). 경고 신호를 인지한 운전자는 충분한 배터리 충전량을 확보할 수 있도록 운전 상태를 유지하거나, 장기간 주차하는 것을 회피함으로써, 주차 후 엔진의 재시동시에 시동 불가 문제가 발생하지 않도록 대응할 수 있게 된다. When a battery abnormality determination signal is output, the ECU 10 causes the battery abnormality warning lamp to light up on the cluster 60 or warns the driver of the battery abnormality state through an audio warning (S180). The driver who recognizes the warning signal can keep the driving state to secure a sufficient battery charging amount or avoid parking for a long period of time to cope with the problem that the starting impossible problem does not occur when the engine is restarted after parking.

배터리 이상 상태에서는, 차량의 주행 중에도 충분한 배터리 충전이 이루어지기 어려워 다음 주차시 암전류에 의한 배터리 방전의 위험이 예상되므로, ECU(10)는 알터네이터(50)의 목표 발전 전압을 상향시킴으로써, 다음 주차 이전의 주행 시에 배터리(20)가 충분히 충전될 수 있도록 한다. 이를 통해, 다음 운전 시에 시동성을 향상시킬 수 있다(S190).It is difficult to sufficiently charge the battery even when the vehicle is running, so that the danger of battery discharge due to the dark current is expected at the next parking. Therefore, the ECU 10 raises the target generation voltage of the alternator 50, So that the battery 20 can be sufficiently charged. Thus, the startability can be improved at the next operation (S190).

10: ECU 20: 배터리
30: 배터리 센서 40: 전자 장치
50: 알터네이터 60: 클러스터10: ECU 20: battery
30: battery sensor 40: electronic device
50: Alternator 60: Cluster

Claims (4)

차량의 이그니션 키의 ON 이후 차량의 주행 중 배터리에 충방전 되는 전류를 검출하여 충전 전류량을 적산하는 단계;
차량의 이그니션 OFF 시 총 적산된 충전 전류량으로부터 배터리 예상 충전량(SoC, State Of Charge)을 계산하는 단계;
상기 계산된 배터리 예상 충전량에 미리 정해진 이상 판정 팩터를 곱하여 기준값을 계산하는 단계;
배터리 OCV(Open Circuit Voltage)를 이용하여 차량의 이그니션 OFF 시의 실제 배터리 충전량을 계산하는 단계;
상기 기준값이 상기 실제 배터리 충전량을 초과하였는지 여부를 판단하여, 차량의 배터리의 이상 여부를 판단하는 단계를 포함하는 것을 특징으로 하는 배터리 충전량을 이용한 차량용 배터리 상태 판정 방법.Accumulating a charge current amount by detecting a current charged / discharged to / from a battery during driving of a vehicle after the ignition key of the vehicle is turned on;
Calculating a state of charge (SoC) of the battery from a total amount of charge current when the ignition of the vehicle is OFF;
Calculating a reference value by multiplying the calculated estimated battery charge by a predetermined anomaly determining factor;
Calculating an actual battery charge amount when the ignition of the vehicle is OFF using a battery OCV (Open Circuit Voltage);
Determining whether the reference value exceeds the actual battery charge amount, and determining whether the battery of the vehicle is abnormal or not. 청구항 제1항에 있어서,
상기 기준값이 상기 실제 배터리 충전량을 초과한 경우, ECU(Electronic Control Unit)는 배터리 상태 이상 판정 신호를 출력하는 것을 특징으로 하는 차량의 암전류 검출 방법.The method according to claim 1,
And when the reference value exceeds the actual battery charge amount, an electronic control unit (ECU) outputs a battery state abnormality determination signal. 청구항 제2항에 있어서,
상기 ECU로부터 배터리 상태 이상 판정 신호가 출력되는 경우, 클러스터 상에서 암전류 경고등을 점등하거나 또는 음성 경고 등을 통해 운전자에게 경고하는 것을 특징으로 하는 배터리 충전량을 이용한 차량용 배터리 상태 판정 방법.The method according to claim 2,
And when the battery state abnormality determination signal is outputted from the ECU, a dark current warning lamp is lit on a cluster or a driver is warned through a voice warning or the like. 청구항 제2항에 있어서,
상기 ECU로부터 배터리 상태 이상 판정 신호가 출력되는 경우, 알터네이터의 목표 전압을 상향 조정하여 배터리의 충전량을 상승시키는 것을 특징으로 하는 배터리 충전량을 이용한 차량용 배터리 상태 판정 방법.The method according to claim 2,
And when the battery state abnormality determination signal is output from the ECU, the target voltage of the alternator is adjusted upward to increase the charged amount of the battery.
KR1020160164302A 2016-12-05 2016-12-05 Method for diagnosing status of battery using battery charge amount for vehicles Abandoned KR20180064107A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112630675A (en) * 2019-09-24 2021-04-09 现代自动车株式会社 Battery management apparatus for vehicle and method thereof
CN113826021A (en) * 2019-07-05 2021-12-21 株式会社Lg新能源 Apparatus and method for diagnosing battery cell

Citations (1)

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Publication number Priority date Publication date Assignee Title
KR100384160B1 (en) 2000-12-27 2003-05-16 현대자동차주식회사 Method for modeling operation the charge/discharge characteristics of a battery according to a status of capacitance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100384160B1 (en) 2000-12-27 2003-05-16 현대자동차주식회사 Method for modeling operation the charge/discharge characteristics of a battery according to a status of capacitance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113826021A (en) * 2019-07-05 2021-12-21 株式会社Lg新能源 Apparatus and method for diagnosing battery cell
CN112630675A (en) * 2019-09-24 2021-04-09 现代自动车株式会社 Battery management apparatus for vehicle and method thereof

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