KR0140149B1 - Over charging prevention method and circuit of battery - Google Patents

Over charging prevention method and circuit of battery

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Publication number
KR0140149B1
KR0140149B1 KR1019940038003A KR19940038003A KR0140149B1 KR 0140149 B1 KR0140149 B1 KR 0140149B1 KR 1019940038003 A KR1019940038003 A KR 1019940038003A KR 19940038003 A KR19940038003 A KR 19940038003A KR 0140149 B1 KR0140149 B1 KR 0140149B1
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KR
South Korea
Prior art keywords
voltage
battery
comparator
alternator
overvoltage
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Application number
KR1019940038003A
Other languages
Korean (ko)
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KR960027139A (en
Inventor
조영식
Original Assignee
김주용
현대전자산업주식회사
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Application filed by 김주용, 현대전자산업주식회사 filed Critical 김주용
Priority to KR1019940038003A priority Critical patent/KR0140149B1/en
Publication of KR960027139A publication Critical patent/KR960027139A/en
Application granted granted Critical
Publication of KR0140149B1 publication Critical patent/KR0140149B1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
    • G01R19/16523—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using diodes, e.g. Zener diodes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2300/00—Purposes or special features of road vehicle drive control systems
    • B60Y2300/91—Battery charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2300/00—Purposes or special features of road vehicle drive control systems
    • B60Y2300/92—Battery protection from overload or overcharge

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Of Charge By Means Of Generators (AREA)
  • Control Of Eletrric Generators (AREA)
  • Protection Of Static Devices (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

1. 발명이 속하는 기술분야1. Field of invention

자동차car

2. 종래의 문제점에 대한 기술적과제2. Technical problem of conventional problems

종래에는 자동차의 전기장치로 전압을 발생시키는 알테네이터와, 알테네이터에서 발생된 전압을 충전시키는 밧테리로 구성되어 있으나, 이는 차량 고속주행시나 장거리주행시 알테네이터에서 발생된 전압이 각종 자동차의 전기장치와, 밧테리에 직접 공급되어 밧테리의 수명을 단축시키는등 문제점이 발생되었던 것이다.Conventionally, it is composed of an alternator for generating voltage with an electric device of a vehicle, and a battery for charging a voltage generated from an alternator, but the voltage generated from the alternator at the time of high-speed driving or long-distance driving of the vehicle and The problem is that the battery is supplied directly to the battery, shortening the life of the battery.

3. 발명이 해결하려는 기술적과제3. The technical problem to be solved by the invention

밧테리에 과전압 안가시 밧테리의 과충전 상태를 감지하여 알테네이터로부터 밧테리로 공급되는 전압을 제어할 수 있게하여 전기적 분해현상을 줄임으로 전해액을 누출이나 감소현상을 해결해 줌과동시에 램프의 열화나 밧테리의 수명 단축을 연장시키도록 하는데 있다.When the battery is not overvoltage, it detects the overcharge state of the battery and controls the voltage supplied from the alternator to the battery, thereby reducing the electrolysis and solving the leakage or reduction of the electrolyte.At the same time, the lamp deteriorates or the battery lifespan. To extend the shortening.

4. 발명의 기술적요지4. Technical summary of invention

밧테리의 충, 방전 상태를 감지하여 알테네이터로부터 공급되는 전압을 제어하 밧테리의충, 방전상태감지회로부를 구성한것이 특징이 있다.The battery charge and discharge condition is sensed by controlling the voltage supplied from the alternator.

Description

밧테리의 과충전 방지방법및회로Battery overcharge prevention method and circuit

제1도는 종래의 밧테리 전압 구성도1 is a conventional battery voltage diagram

제2도는 밧테리의 과충전을 방지하는 본발명의 블럭구성도2 is a block diagram of the present invention to prevent the battery overcharged

제3도는 제2도의 상세 블럭구성도3 is a detailed block diagram of FIG.

제4도는 제3도의 상세 회로도4 is a detailed circuit diagram of FIG.

제5도는 본 발명을 위한 플로우 차트5 is a flow chart for the present invention

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 저전압감지부 20 : 기준전압설정부10: low voltage detection unit 20: reference voltage setting unit

30 : 과전압감지부 300 : 밧테리의충, 방전상태감지회로부30: overvoltage detection unit 300: battery charge and discharge state detection circuit

40 : 스위칭부 OP, OP: 비교기40: switching unit OP , OP Comparator

TR, TR: 트랜지스터 ZD-ZD: 제너다이오드TR , TR Transistor ZD -ZD Zener diode

VR, VR: 가변저항 R-R: 전압분배저항VR , VR : Variable resistor R -R : Voltage divider

본발명은 자동차에 장치되는 밧테리의 과충전 방지방법 및 회로에 관한것으로, 특히 밧테리에 과전압 인가시 밧테리의 과충전상태를 감지하여 알터네이터로부터 밧테리로 공급되는 전압을 제어할 수 있도록하는 밧테리의 과충전 방지방법 및 그회로에 관한 것이다.The present invention relates to a method and a circuit for preventing overcharging of a battery installed in an automobile, and in particular, a method for preventing overcharging of a battery which detects an overcharge state of the battery and controls a voltage supplied from the alternator to the battery when an overvoltage is applied to the battery. It's about that circuit.

종래의 밧테리전압 구성도는, 제1도에서와같이, 자동차의 전기장치(200)로 전압을 발생시키는 알터네이터(100)와, 알터네이터에서 발생된 전압을 충전시키는 밧테리(BT)로 구성되어 있다.The conventional battery voltage diagram is composed of an alternator 100 for generating a voltage in the electric device 200 of a vehicle and a battery BT for charging the voltage generated in the alternator, as shown in FIG.

그런데 종래의 알터네이터는 엔진의 회전력을 이용하여 전압을 발생시킴으로써, 차량이 고속주행이나 장거리주행시 밧테리에 정격 이상의 전압이 인가된다.However, the conventional alternator generates a voltage by using the rotational force of the engine, so that a voltage higher than the rated voltage is applied to the battery when the vehicle is driving at high speed or at a long distance.

이때 전해액은 전기분해가 되고, 램프(LAMP)들도 백화현상 또는 측화현상이 발생되며, 따라서 필라멘트의 산화로 단선되어 결국 램프를 교환해야하고, 또한 차량 고속주행시나 장거리주행시 알터네이터에서 발생된 전압이 각종 자동차의 전기장치와 밧테리에 직접공급되어 밧테리의 수명을 단축 시키는둥 문제점이 발생되었던 것이다.At this time, the electrolyte is electrolyzed, and the lamps (LAMPs) also generate whitening or lateralization. Therefore, the lamp is disconnected due to oxidation of the filament and eventually the lamps need to be replaced. Also, the voltage generated by the alternator during high-speed driving or long-distance driving It was a problem that the supply of electricity directly to the electric devices and batteries of various cars shortens the life of the battery.

본발명은 상기와같은 종래의 문제점을 해결하고자 이루어진 것으로서, 그 목적은 밧테리에 과전압 인가시 밧테리의 과충전 상태를 감지하여 알터네이터로부터 밧테리로 공급되는 전압을 제어할 수 있게하여 전기적 분해현상을 줄임으로써 전해액의 누출이나 감소현상을 해결해 줌과 동시에 램프의 열화나 밧테리의 수명단축을 방지하는 것이다.The present invention has been made to solve the conventional problems as described above, its purpose is to detect the overcharge state of the battery when the battery is over-voltage to control the voltage supplied from the alternator to the battery by reducing the electrolytic phenomenon This will solve the leakage and reduction of the battery and prevent the lamp from deteriorating or shortening the life of the battery.

상기의 목적을 달성하고자 본발명은 밧테리의 충, 방전 상태를 감지하여 알터네이터로부터 공급되는 전압을 제어하는 밧테리의 충, 방전상태감지회로부를 구성한 것이 특징이 있다.In order to achieve the above object, the present invention is characterized by configuring the battery charge and discharge state detection circuit for controlling the voltage supplied from the alternator by detecting the battery charge and discharge state.

이를 첨부도면에 따라 본발명을 상세히 설명하면 다음과 같다.When explaining the present invention in detail according to the accompanying drawings as follows.

제2도는 밧테리의 과충전 방지를 위한 본발명의 블럭구성도로서, 제1도에 도시한 바와같이, 전압을 발생시키는 알터네이터(100)와, 자동차의전기장치(200)사이에 밧테리(BT)의 충,방전 상태를 감지하여 알터네이터로부터 공급되는 전압을 제어하는 밧테리의충, 방전상태감지회로부(300)를 연결하여 구성한 것이다.FIG. 2 is a block diagram of the present invention for preventing overcharging of a battery. As shown in FIG. 1, a battery BT is disposed between an alternator 100 that generates a voltage and an electric device 200 of a vehicle. It is configured by connecting the charging and discharging state detection circuit unit 300 of the battery for controlling the voltage supplied from the alternator by detecting the charging and discharging state.

상기 밧테리의충, 방전상태감지회로부(300)는 제3도에서와같이, 밧테리의 저전압상태를 감지하는 저전압감지부(10)와, 제1비교기(OP1)에 기준전압을 설정하는 기준전압설정부(20)와, 기준전압과 밧데리의 저전압을 비교하는 제1비교기(OP1)와, 알터네이터(100)의 과전압을 감지하는 과전압감지부(30)와, 상기 과전압감지부(30)로부터감지된 과전압과 제1비교기(OP1)에서 출력되는 전압과를 비교하는 제2비교기(OP2)와, 상기 제2비교기(OP2)로부터 비교된 전압에 의해 구동되어 알터네이터(100)에서 발생된 전압을 밧테리(BT)로 공급하는 스위칭부(40)로 구성된다.The battery charging and discharging state detecting circuit unit 300, as shown in Figure 3, the low voltage detecting unit 10 for detecting a low voltage state of the battery and the reference voltage for setting a reference voltage in the first comparator (OP 1 ) From the setter 20, the first comparator OP 1 comparing the reference voltage and the low voltage of the battery, an overvoltage detector 30 for detecting an overvoltage of the alternator 100, and the overvoltage detector 30. the sensed voltage and the first comparator a second comparator for comparing the voltage output from the (OP 1) (OP 2) and is driven by the voltage comparator from the second comparator (OP 2) generated in the alternator 100 It is composed of a switching unit 40 for supplying the voltage to the battery (BT).

상기 저전압감지부(10)는 밧테리(BT)의 저전압레벨을 설정하는 가변저항(VR1)과, 전압을 분배하는 전압분배저항(R1)으로 구성되고, 상기 기준전압설정부(20)는 제1비교기(OP1)의 기준전압을 설정하는 제너다이오드(ZD1)와, 전압을 분배하는 전압분배저항(R2),(R3)으로 구성되고, 상기 과전압감지부(30)는 제2비교기(OP2)의 기준전압을 설정하는 제너다이오드(ZD3)와, 알터네이터의 과전압레벨을 설정하는 가변저항(VR2)과, 전압을 분배하는 전압분배저항(R5)으로 구성된다.The low voltage detection unit 10 includes a variable resistor VR 1 for setting the low voltage level of the battery BT, and a voltage divider R 1 for distributing the voltage, and the reference voltage setting unit 20 includes: Zener diode ZD 1 for setting the reference voltage of the first comparator OP 1 and voltage distribution resistors R 2 and R 3 for distributing the voltage are included in the overvoltage detector 30. Zener diode ZD 3 for setting the reference voltage of the second comparator OP 2 , variable resistor VR 2 for setting the overvoltage level of the alternator, and voltage distribution resistor R 5 for distributing the voltage.

상기 스위칭부(40)는 트랜지스터의 구동점을 설정하는 제너다이오드(ZD4)와, 밧테리의 과전압을 통과 및 차단 시키기위한 트랜지스터(TR1),(TR2)로 구성된다.The switching unit 40 includes a zener diode ZD 4 for setting a driving point of the transistor, and transistors TR 1 and TR 2 for passing and blocking an overvoltage of the battery.

이와같이 구성된 본발명의 작용효과를 설명하면 다음과 같다.Referring to the effects of the present invention configured as described above are as follows.

우선 자동차의 전기장치동작으로 밧테리(BT)의 전압이 낮아지면 저전압감지부(10)에서는 제1비교기(OP1)로 낮아진 밧테리의 전압량을 입력한다.First, when the voltage of the battery BT decreases due to the electric device operation of the vehicle, the low voltage detection unit 10 inputs the voltage amount of the battery lowered to the first comparator OP 1 .

그럼 제1비교기(OP1)에서는 낮아진 밧테리의 전압이 제1비교기(OP1)의 기준설정전압보다 낮은가를 확인하여(단계2) 기준설정전압이 밧테리의 전압보다 낮으면 단계3에서 충전상태 양호를 표시하고, 기준설정전압이 밧테리의 전압보다 높으면 제1비교기(OP1)로부터 하이(H)신호가 출력되어(단계4) 제2비교기(OP2)의 한입력단자에 저항(R4)를 통해 인가됨으로써 제2비교기(OP2)에서 하이(H)신호가 출력된다.Then, the first comparator OP 1 checks whether the lowered battery voltage is lower than the reference set voltage of the first comparator OP 1 (step 2). If the reference set voltage is lower than the battery voltage, the charging state is good in step 3. If the reference set voltage is higher than the voltage of the battery, a high signal (H) is output from the first comparator (OP 1 ) (step 4) and a resistor (R 4 ) is applied to one input terminal of the second comparator (OP 2 ). The high signal H is output from the second comparator OP 2 by being applied through.

제2비교기(OP2)에서 출력된 하이(H) 신호는 제너다이오드(ZD4)를 통해 트랜지스터(TR1)의 베이스에 인가되어 스위칭부(40)를 동작시킨다.The high signal H output from the second comparator OP 2 is applied to the base of the transistor TR 1 through the zener diode ZD 4 to operate the switching unit 40.

그리하여 제2비교기(OP2)의 비반전단자(+)에 기준설정 전압이 인가되고, 알터네이터(100)에서 발생된 전압이 비교기(OP2)의 기준설정전압보다 낮은가를 확인하여(단계5) 높으면 비교기(OP2)로부터 로우(L)신호가 출력되어 트랜지스터(TR1),(TR2)를 오프시키고, (단계6) 낮으면 비교기(OP2)로부터 하이(H)신호가 출려되어 트랜지스터(TR1), (TR2)를 온(ON)시켜(단계7) 알터네이터(100)에서 발생된 전압이 밧테리(BT)로 공급되어 전압을 충전시키다.(단계8)Thus, the second comparator is a non-standard set up voltage to the inverting terminal (+) of (OP 2) is applied, and the voltage generated in the alternator 100, determine the lower than standard set voltage of the comparator (OP 2) (5) If it is high, the low (L) signal is output from the comparator OP 2 to turn off the transistors TR 1 and TR 2 , and if it is low, the high (H) signal is output from the comparator OP 2 and the transistor is turned off. (TR 1 ) and (TR 2 ) are turned ON (step 7), and the voltage generated in the alternator 100 is supplied to the battery BT to charge the voltage (step 8).

이와같은 상태에서 차량 고속주행시 알터네이터(100)에서 발생된 공급 전압이 높아지면, 높아진 과전압은 과전압감지부(30)내의 전압을 분배하는 전압분배저항(R5)과 제2비교기(OP2)의 과전압한계치를 설정하는 제너다이오드(ZD3)를 통해 비교기(OP2)에 과전압을 공급한다.In such a state, when the supply voltage generated in the alternator 100 during the high-speed driving of the vehicle is high, the increased overvoltage of the voltage divider R 5 and the second comparator OP 2 for distributing the voltage in the overvoltage detecting unit 30 are increased. The overvoltage is supplied to the comparator OP 2 through the zener diode ZD 3 which sets the overvoltage limit.

그럼 제2비교기(OP2)에 공급된 과전압은 기준전압과 비교되어, 제2비교기(OP2)에서 로우(L)신호가 출력된다.Then, the overvoltage supplied to the second comparator OP 2 is compared with the reference voltage, and the low L signal is output from the second comparator OP 2 .

즉 비교기(OP2)에 입력되어 비교된 전압이 과전압일때는 트랜지스터(TR1)의 베이스로 로우(L)신호가 출력되어 트랜지스터(TR1)를 오프(OFF)시키고, 따라서 트랜지스터(TR2)도 오프되어 밧테라(BT)에 알터네이터(100)의 과전압이 인가되지 못하게 하고, 알터네이터(100)의 전압이 저전압일때는 트랜지스터(TR1)로 하이(H)신호가 출력되어 트랜지스터(TR1)를 온(ON)시키고, 따라서 트랜지스터(TR2)도 온되어 알터네이터(100)에서 발생된 전압이 트랜지스터(TR2)와 저항(R5)를 통해 밧데리(BT)를 충전시킨다.I.e. comparators the voltage is an overvoltage when compared is input to the (OP 2) is a base of the transistor (TR 1) low (L) signal is output turns off (OFF) the transistor (TR 1), therefore the transistor (TR 2) also off Bhatt TB (BT) to prevent unauthorized over-voltage of the alternator 100, the voltage of the alternator 100 is a low voltage when is at a high (H) signal output to the transistor (TR 1), a transistor (TR 1) The transistor TR 2 is also turned on so that the voltage generated in the alternator 100 charges the battery BT through the transistor TR 2 and the resistor R 5 .

이상과같이 본발명은 밧테리에 과전압 인가시 밧테리의 과충전 상태를 감지하여 알터네이터로부터 밧테리로 공급되는 전압을 제어할 수 있게해 주므로써 전기적 분해현상을 줄이고 전해액의 누출이나 감소 현상을 해결해 줌과동시에 램프의 열화나 밧테리의 수명단축을 연장시켜주는 효과가 있다.As described above, the present invention senses an overcharge state of a battery when an overvoltage is applied to the battery, thereby controlling the voltage supplied from the alternator to the battery, thereby reducing electrical decomposition and solving leakage or reduction of electrolyte. Deterioration of the battery and shortening the life of the battery is effective.

Claims (7)

알터네이터에서 전기를 공급받아 저장하는 밧데리의 과충전 방지방법에 있어서, 자동차의 전기장치의 동작으로 밧테리의 전압이 낮아지면 제1비교기에 의해 낮아진 밧테리의 전압이 기준설정전압보다 낮은가를 확인하는 확인단계와, 제1비교기의 기준설정전압보다 밧테리의 전압이 낮으면 하이 신호를 출력하는 출력단계와, 알터네이터에서 발생된 전압이 제2비교기의 기준설정전압보다 낮은가를 확인하는 확인단계와, 알터네이터에서 발생된 전압이 상기 제2비교기의 기준설정전압보다 높으면 트랜지스터를 오프 시켜 과전압을 차단시키는 과전압 차단단계와, 낮으면 트랜지스터를 온 시켜 알터네이터에서 발생된 전압을 밧테리에 충전시키는 충전단계로 이루어짐을 특징으로하는 밧테리의 과충전 방지방법.In the method of preventing overcharge of the battery stored in the electricity supplied from the alternator, the step of checking whether the battery voltage lowered by the first comparator is lower than the reference set voltage when the voltage of the battery is lowered by the operation of the electric device of the vehicle and Outputting a high signal when the voltage of the battery is lower than the reference set voltage of the first comparator; checking whether the voltage generated by the alternator is lower than the reference set voltage of the second comparator; and When the voltage is higher than the reference set voltage of the second comparator, the overvoltage blocking step of turning off the transistor to cut off the overvoltage, and if it is low, the battery comprises a charging step of charging the voltage generated by the alternator to the battery How to prevent overcharge 밧데리의 과충전 방지회로에 있어서, 전압을 발생시키는 알터네이터(100)와, 상기 밧테리의 저전압 상태를 감지하는 저전압감지부(10)와, 제1비교기에 기준전압을 설정하는 기준전압설정부(20)와, 상기 기준전압설정부(20)의 기준전압과 상기 저전압감지부(10)의 저전압을 비교하는 제1비교기(OP1)와, 상기 알터네이터의 과전압을 감지하는 과전압감지부(30)와, 상기과전압감지부로부터 감지된 과전압과 상기 제1비교기(OP1)에서 출력되는 전압과를 비교하는 제2비교기(OP2)와, 상기제2비교기(OP2)로부터 비교된 전압에 의해 구동되어 상기 알터네이터에서 발생된 전압을 상기 밧테리(BT)로 공급하는 스위칭부(40)로 구성됨을 특징으로하는 밧테리의 과충전 방지회로.In the battery overcharge protection circuit, an alternator 100 for generating a voltage, a low voltage detecting unit 10 for detecting a low voltage state of the battery, and a reference voltage setting unit 20 for setting a reference voltage in a first comparator A first comparator (OP 1 ) comparing the reference voltage of the reference voltage setting unit (20) with the low voltage of the low voltage detection unit (10), an overvoltage detection unit (30) for sensing an overvoltage of the alternator, It is driven by the second comparator (OP 2 ) and the second comparator (OP 2 ) to compare the overvoltage sensed by the overvoltage detector and the voltage output from the first comparator (OP 1 ) Battery overcharge protection circuit, characterized in that consisting of a switching unit 40 for supplying the voltage generated by the alternator to the battery (BT). 상기 밧테리의 저전압 상태를 감지하는 저전압감지부(10)는 밧테리의 저전압 레벨를 설정하는 가변저항(VR1)과, 전압을 분해하는 전압분배저항(R1)으로 구성됨을 특징으로하는 밧테리의 과충전 방지회로.The low voltage detection unit 10 for detecting the low voltage state of the battery is prevented from overcharging the battery, characterized in that it consists of a variable resistor (VR 1 ) for setting the low voltage level of the battery, and a voltage distribution resistor (R 1 ) for decomposing the voltage. Circuit. 상기 제1비교기(OP1)에 기준전압을 설정하는 기준전압설정부(20)는 상기 제1비교기(OP1)의 기준전압을 설정하는 제너다이오드(ZD1)와, 전압을 분배하는 전압분배저항(R2), (R3)으로 구성됨을 특징으로하는 밧테리의 과충전 방지회로.The first comparator the reference voltage setting unit 20 includes a voltage divider for distributing the zener diode (ZD 1), and a voltage for setting the reference voltage of the first comparator (OP 1) for setting a reference voltage to the (OP 1) An overcharge protection circuit of a battery, characterized by consisting of resistors (R 2 ), (R 3 ). 제2항에 있어서, 상기 과전압을 감지하는 과전압감지부(30)는 상기 제2비교기(OP2)의 기준전압을 설정하는 제너다이오드(ZD3)와, 상기 알터네이터(100)의 과전압레벨을 설정하는 가변저항(vr2)과, 전압을 분해하는 전압분배저항(R5)으로 구성을 특징으로하는 밧테리의 과충전 방지회로.The overvoltage detecting unit 30 for detecting the overvoltage sets a zener diode ZD 3 for setting a reference voltage of the second comparator OP 2 and an overvoltage level of the alternator 100. A battery overcharge protection circuit comprising a variable resistor (vr 2 ) and a voltage divider (R 5 ) to decompose voltage. 제2항에 있어서, 상기 알터네이터(100)에서 발생된 전압을 밧테리로 공급하는 스위칭부(40)는 트랜지스터의 구동점을 설정하는 제너다이오드(ZD4)와, 밧테리와 과정압을 차단시키기위한 트랜지스터(TR1), (TR2) 구성됨을 특징으로하는 밧테리의 과충전 방지회로.The switching unit 40 for supplying the voltage generated by the alternator 100 to the battery includes a Zener diode ZD 4 for setting a driving point of the transistor, and a transistor for cutting off the battery and the process pressure. (TR 1 ), (TR 2 ) configured to prevent overcharge of the battery. 제2항에 있어서, 상기 제2비교기(OP2)의 입력정보를 리미트 시키기위해 제1비교기(OP1)의 출력단과 제2비교기(OP2)의 입력단 사이에 전압을 분배하는 전압분배장치(R4)과, 제너다이오드(ZD2)를 연결한것을 특징으로하는 밧테리의 과충전 방지회로.The method of claim 2, wherein the voltage distribution device that distributes the second comparator voltage between the input terminal of the output stage and the second comparator (OP 2) of the first comparator (OP 1) in order to limit the input information (OP 2) ( R 4 ) and a zener diode (ZD 2 ) is connected to the battery overcharge protection circuit.
KR1019940038003A 1994-12-28 1994-12-28 Over charging prevention method and circuit of battery KR0140149B1 (en)

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KR100921647B1 (en) * 2007-12-28 2009-10-14 넥스콘 테크놀러지 주식회사 A Over Voltage Prtection Circuit of Cell of Battery Pack for a Hybrid Electric Vehicle and the method thereof

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KR20020047562A (en) * 2000-12-13 2002-06-22 이계안 Charging Control Device for Automobiles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100921647B1 (en) * 2007-12-28 2009-10-14 넥스콘 테크놀러지 주식회사 A Over Voltage Prtection Circuit of Cell of Battery Pack for a Hybrid Electric Vehicle and the method thereof

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