KR960013950B1 - Constant current discharge circuit for a condensor - Google Patents

Constant current discharge circuit for a condensor Download PDF

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Publication number
KR960013950B1
KR960013950B1 KR1019930024550A KR930024550A KR960013950B1 KR 960013950 B1 KR960013950 B1 KR 960013950B1 KR 1019930024550 A KR1019930024550 A KR 1019930024550A KR 930024550 A KR930024550 A KR 930024550A KR 960013950 B1 KR960013950 B1 KR 960013950B1
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South Korea
Prior art keywords
unit
rechargeable battery
voltage
switching
constant current
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KR1019930024550A
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Korean (ko)
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KR950015897A (en
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김인철
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대우전자 주식회사
배순훈
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    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

a switching unit(12) switching the discharge of a battery; an initial driving unit(13) which opens the switch for feedback as the battery is installed, and closes the switch as feedback is completed; a reference voltage unit(14) providing a battery blocking voltage from the voltage of the battery through the switching unit(12); a comparing unit(15) comparing the voltage of the battery with the blocking voltage of the reference voltage unit(14); a control unit(16) controlling the switching of the switching unit(12) according to the comparison; and a discharge load unit(17) discharging the voltage of the battery when the switching unit is open.

Description

충전지의 정정류 방전장치Rectifier discharge device of rechargeable battery

제1도는 종래의 충전지 정전류 방전장치 구성블럭도.1 is a block diagram of a conventional rechargeable battery constant current discharge device.

제2도는 본 발명의 충전지 정전류 방전장치 구성블럭도.2 is a block diagram of a rechargeable battery constant current discharge device of the present invention.

제3도는 제2도의 회로적 구성도.3 is a circuit diagram of FIG.

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

11 : 충전지 12 : 스위칭부11: rechargeable battery 12: switching unit

13 : 초기 기동부 14 : 기준전압부13 initial starting section 14 reference voltage section

15 : 비교부 16 : 콘트롤부15: comparison unit 16: control unit

17 : 방전부하부17: discharge load

본 발명은 충전지의 정전류 방전장치에 관한 것으로, 특히 충전지의 정전류 방전을 저가의 방전장치로 제어하기 위한 충전지의 정전류 방전장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant current discharge device for a rechargeable battery, and more particularly, to a constant current discharge device for a rechargeable battery for controlling the constant current discharge of a rechargeable battery with a low cost discharge device.

일반적으로 충전지를 사용할 때 충전지의 차단전압(End Voltage)에까지 완전 방전하지 않고 계속 충전하여 사용하면 충전지 사용시간을 단축시키는 메모리 효과(Memory Effect)가 발생하게 된다. 이와 같은 현상을 방지하며 충전지를 효과적으로 사용하기 위하여 충전지를 차단전압까지 방전해서 사용할 필요가 있다.In general, when the rechargeable battery is used, the battery is continuously charged without being completely discharged to the end voltage of the rechargeable battery, resulting in a memory effect that shortens the usage time of the rechargeable battery. In order to prevent such a phenomenon and to effectively use the rechargeable battery, it is necessary to discharge the rechargeable battery to a cutoff voltage.

이와 같은 충전지를 차단전압 이하로 방전하기 위한 종래의 충전지 정전류 방전장치를 첨부된 도면을 참조하여 설명하면 다음과 같다.Referring to the accompanying drawings, a conventional rechargeable battery constant current discharge device for discharging such a rechargeable battery below a blocking voltage is as follows.

제1도는 종래의 충전지 정전류 방전장치 구성블럭도로써, 종래의 충전지 정전류 방전장치는 전하를 충전하고 방전하는 충전지(1)의 전압을 A/D 변환하여 기준전압과 비교하여 기준전압보다 낮을때까지 충전지가 방전되도록 제어하는 마이콤(2)의 제어에 의해 충전지의 방전을 스위칭하는 스위칭부(3)와, 스위칭부(3)의 스위칭에 의해 충전지의 전압을 방전시키는 방전부하(4)로 구성된다.1 is a block diagram of a conventional rechargeable battery constant current discharge device. The conventional rechargeable battery constant current discharge device A / D converts a voltage of the rechargeable battery 1 that charges and discharges charges until it is lower than the reference voltage in comparison with the reference voltage. A switching unit 3 for switching the discharge of the rechargeable battery under the control of the microcomputer 2 for controlling the rechargeable battery to be discharged, and a discharge load 4 for discharging the voltage of the rechargeable battery by the switching of the switching unit 3. .

이와 같이 구성된 종래의 충전지 정전류 방전장치의 동작은 다음과 같다. 먼저, 마이콤(2)이 충전지 전압을 A/D 변환해서 읽어 들인후, 설정된 기준전압과 A/D 변환된 충전지 전압을 마이콤(2) 내부의 비교기에서 비교검출한다. 그리고 충전지 전압이 기준전압보다 높으면 스위칭부(3)를 온(on)시켜 충전지를 방전부하부(4)에 연결하여 충전지를 방전시킨다.The operation of the conventional rechargeable battery constant current discharge device configured as described above is as follows. First, the microcomputer 2 A / D converts and reads the rechargeable battery voltage, and then compares and detects the set reference voltage and the A / D converted rechargeable battery voltage in the comparator inside the microcomputer 2. When the rechargeable battery voltage is higher than the reference voltage, the switching unit 3 is turned on to connect the rechargeable battery to the discharge load unit 4 to discharge the rechargeable battery.

이와 같이 방전이 계속되면서 충전지의 전압은 계속 강하하게 된다. 충전지의 전압이 계속 강하하다가 마이콤(2)의 기준전압 이하가 되면, 비교기에서 스위칭부(3)를 오프(off)시켜 충전지와 방전부하부(4)를 차단시켜 방전을 중지하게 된다.As the discharge continues, the voltage of the rechargeable battery continues to drop. When the voltage of the rechargeable battery continues to drop and falls below the reference voltage of the microcomputer 2, the comparator turns off the switching unit 3 to cut off the rechargeable battery and the discharge load unit 4 to stop the discharge.

그러나 이와 같은 종래의 충전지 정전류 방전장치에 있어서는 마이콤(2)을 사용하여 방전을 제어하므로써 방전장치가 고가(high cost)인 문제점이 있었다.However, such a conventional rechargeable battery constant current discharge device has a problem that the discharge device is high cost by controlling the discharge using the microcomputer (2).

본 발명은 이와 같은 문제점을 해결하기 위하여 안출한 것으로서, 저가(Low cost)의 충전지 정전류 방전장치를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide a low cost rechargeable battery constant current discharge device.

이와 같은 목적을 달성하기 위한 본 발명은 충전지의 방전을 스위칭하는 스위칭부와, 충전지를 장착시키면 바로 스위칭부가 도통되어 원활한 피드백(feedback)이 이루어지도록 스위칭부를 온시키는 역할을 하는 초기 기동부와, 충전지의 방전차단 전압값을 제공하는 기준전압부와, 충전지의 분압과 기준전압부의 전압을 비교하는 비교부과, 비교부의 신호에 따라 스위칭부를 제어하는 콘트롤부와, 정전류 부하를 설치하여 충전지의 전압을 방전하는 방전부하부로 구성함을 특징으로 한다.The present invention for achieving the object of the present invention, the switching unit for switching the discharge of the rechargeable battery, an initial starting unit that serves to turn on the switching unit so that the switching is conducted immediately when the rechargeable battery is mounted, and the rechargeable battery, To discharge the voltage of the rechargeable battery by installing a reference voltage unit providing a discharge cutoff voltage value of the battery, a comparison unit comparing the divided voltage of the rechargeable battery and the voltage of the reference voltage unit, a control unit controlling the switching unit according to the signal of the comparing unit, and a constant current load. It is characterized by consisting of a discharge load.

이와 같은 본 발명을 첨부된 도면을 참조하여 설명하면 다음과 같다.This invention will be described with reference to the accompanying drawings as follows.

제2도는 본 발명의 충전지 정전류 방전장치 구성블럭도이고, 제3도는 제2도의 회로적 구성도로써, 본 발명의 충전지 정전류 방전장치의 구성은 트랜지스터(Q1), 다이오드(D1)로 이루어져 충전지(11)의 방전을 스위칭하는 스위칭부(12)와, 저항(R1)과 커패시터(C1) 등으로 이루어져 충전지(11)를 장착시키면 바로 스위칭부(12)를 도통시켜 원활한 피드백이 이루어지도록 초기 스위칭부(12)를 온시키고 정상적인 피드백이 이루어지면 전류가 흐르지 않는 초기 기동부(13)와, 저항(R7)과 재너다이오드(ZD1) 등으로 이루어져 스위칭부(12)를 통해 방전된 충전지의 전압으로부터 충전지의 방전 차단 전압값을 제공하는 기준전압부(14)와, 트랜지스터(Q3,Q4,Q5), 저항(R3∼R6), 재너다이오드(ZD2) 등으로 이루어져 상기 기준전압부(14)의 전압과 스위칭부(12)를 통해 방전되는 충전지의 분압을 비교하는 비교부(15)와, 트랜지스터(Q2)로 이루어져 비교부(15)의 출력에 따라 스위칭부(12)를 제어하는 콘트롤부(16)와, 저항(R8), 트랜지스터(Q2) 등으로 이루어져 스위칭부(12)를 통해 충전지(11)의 방전 전류를 일정하게 하기 위해 정전류 부하를 설치하여 방전하는 방전부하부(17)로 구성한다.2 is a block diagram showing the configuration of the rechargeable battery constant current discharge device of the present invention, and FIG. 3 is a circuit diagram of the rechargeable battery constant current discharge device of the present invention. The configuration of the rechargeable battery constant current discharge device of the present invention includes a transistor Q 1 and a diode D 1 . Switching unit 12 for switching the discharge of the rechargeable battery 11, the resistor (R 1 ) and the capacitor (C 1 ) made of a rechargeable battery 11 is connected to the switching unit 12 immediately connected to achieve a smooth feedback When the initial switching unit 12 is turned on and normal feedback is made, the initial switching unit 12 includes no initial current, a resistor R 7 , a zener diode ZD 1 , and the like, and are discharged through the switching unit 12. The reference voltage section 14 which provides the discharge cut-off voltage value of the rechargeable battery from the voltage of the rechargeable battery, the transistors Q 3 , Q 4 , Q 5 , resistors R 3 to R 6 , zener diode ZD 2 , and the like. Through the voltage of the reference voltage unit 14 and the switching unit 12 Comparator 15 for comparing the partial pressure of the discharged battery, a transistor (Q 2 ) consisting of a control unit 16 for controlling the switching unit 12 in accordance with the output of the comparison unit 15, and a resistor (R 8) ), A transistor Q 2 , and the like, and a discharge load unit 17 for discharging by installing a constant current load to make the discharge current of the rechargeable battery 11 constant through the switching unit 12.

이와 같이 구성된 본 발명의 충전지 정전류 방전장치의 동작은 다음과 같다.Operation of the rechargeable battery constant current discharge device of the present invention configured as described above is as follows.

먼저, 충전지(11)를 본 발명의 충전지 정전류 방전장치에 장착시키면 바로 초기기동부(13)의 커패시터(C1)에 의해 스위칭부(12)가 도통되어 원활한 피드백이 이루어진다. 따라서 기준전압부(14)에서는 충전지(11)의 전압을 충전지의 방전 차단전압에 상응하는 기준전압을 출력하고 비교부(15)에서 충전지의 전압을 분압하여 기준전압부(14)에서 출력된 기준전압과 비교한다. 여기서, 충전지의 분압이 기준전압보다 높으면, 그 신호를 받아 콘트롤부(16)가 스위칭부(12)를 턴온시켜 방전부하부(17)에서 충전지의 전압이 방전되도록 하며, 스위칭부(12)의 턴온상태는 기준전압보다 충전지의 분압이 낮아질 때까지 계속되고, 충전지의 전압이 방전되어 그 분압이 기준전압 이하이면 콘트롤부(16)가 스위칭부(12)를 턴 오프시켜 방전을 차단한다. 이때, 스위칭부(12)가 콘트롤부(16)에 의해 턴온되어 정상적인 피드백이 이루어지면 초기 기동부(13)에는 전류가 흐르지 않는다.First, when the rechargeable battery 11 is mounted in the rechargeable battery constant current discharge device of the present invention, the switching unit 12 is electrically conducted by the capacitor C 1 of the initial starter 13, thereby providing smooth feedback. Accordingly, the reference voltage unit 14 outputs a reference voltage corresponding to the voltage of the rechargeable battery 11 corresponding to the discharge cutoff voltage of the rechargeable battery, and divides the voltage of the rechargeable battery in the comparator 15 to output the reference voltage from the reference voltage unit 14. Compare with voltage. Here, when the partial pressure of the rechargeable battery is higher than the reference voltage, the control unit 16 turns on the switching unit 12 in response to the signal to discharge the voltage of the rechargeable battery from the discharge load unit 17, and the The turn-on state continues until the partial pressure of the rechargeable battery is lower than the reference voltage. When the voltage of the rechargeable battery is discharged and the divided voltage is equal to or less than the reference voltage, the controller 16 turns off the switching unit 12 to block the discharge. At this time, when the switching unit 12 is turned on by the control unit 16 and normal feedback is made, no current flows in the initial starting unit 13.

이상에서 설명한 바와 같은 본 발명의 충전지 정전류 방전장치에 있어서는 고가의 마이콤을 사용하지 않고 저가의 콘트롤 회로 및 비교기로써 충전지를 방전시켜 사용시간을 단축시키는 메모리 효과를 방지하는 효과가 있다.The rechargeable battery constant current discharge device of the present invention as described above has the effect of preventing the memory effect of shortening the use time by discharging the rechargeable battery with a low cost control circuit and a comparator without using an expensive microcomputer.

Claims (3)

충전지의 방전을 스위칭하는 스위칭부(12)와, 충전지를 장착시키면 원활한 피드백이 이루어지도록 상기 스위칭부(12)를 도통시키고 완전한 피드백이 이루어지면 전류가 흐르지 않는 초기기동부(13)와, 상기 스위칭부(12)를 통해 충전지의 전압으로부터 충전지 차단 전압값을 제공하는 기준전압부(14)와, 충전지읜 전압을 상기 기준전압부(14)의 차단 전압과 비교하는 비교부(15)와, 비교부(15)의 비교된 결과에 따라 스위칭부(12)의 스위칭을 제어하는 콘트롤부(16)와, 상기 스위칭부(12)가 도통되면 충전지의 전압을 방전시키는 방전부하부(17)를 포함하여 구성됨을 특징으로 하는 충전지의 정전류 방전장치.Switching unit 12 for switching the discharge of the rechargeable battery, and when the rechargeable battery is mounted to conduct the switching unit 12 so that smooth feedback is achieved, if complete feedback is made, the initial starting unit 13, the current does not flow, and the switching Compared with the reference voltage unit 14 which provides the battery blocking voltage value from the voltage of the rechargeable battery through the unit 12, and the comparison unit 15 comparing the charging battery voltage with the cutoff voltage of the reference voltage unit 14, A control unit 16 for controlling the switching of the switching unit 12 according to the comparison result of the unit 15 and a discharge load unit 17 for discharging the voltage of the rechargeable battery when the switching unit 12 is turned on. A constant current discharge device of a rechargeable battery, characterized in that the configuration. 제1항에 있어서, 비교부(15)는 충전지의 전압을 분압하여 기준전압부(14)의 차단 전압과 비교함을 특징으로 하는 충전지의 정전류 방전장치.The constant current discharge device according to claim 1, wherein the comparing unit (15) divides the voltage of the rechargeable battery by comparing the voltage of the rechargeable battery with the cutoff voltage of the reference voltage unit (14). 제1항에 있어서, 콘트롤부(16)는 트랜지스터로 이루어짐을 특징으로 하는 충전지의 정전류 방전장치.The constant current discharge device of a rechargeable battery according to claim 1, wherein the control unit (16) is made of a transistor.
KR1019930024550A 1993-11-17 1993-11-17 Constant current discharge circuit for a condensor KR960013950B1 (en)

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KR1019930024550A KR960013950B1 (en) 1993-11-17 1993-11-17 Constant current discharge circuit for a condensor

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KR950015897A KR950015897A (en) 1995-06-17
KR960013950B1 true KR960013950B1 (en) 1996-10-10

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KR100854707B1 (en) * 2006-01-02 2008-08-27 (주)갑진 Charge and discharge system of a direct current regenerative form

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