KR900003185Y1 - Circuit controlling quick charging of battery - Google Patents
Circuit controlling quick charging of battery Download PDFInfo
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- KR900003185Y1 KR900003185Y1 KR2019870002806U KR870002806U KR900003185Y1 KR 900003185 Y1 KR900003185 Y1 KR 900003185Y1 KR 2019870002806 U KR2019870002806 U KR 2019870002806U KR 870002806 U KR870002806 U KR 870002806U KR 900003185 Y1 KR900003185 Y1 KR 900003185Y1
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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
- H02J7/007184—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage in response to battery voltage gradient
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- 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
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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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
- H02J7/0029—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
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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)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 블록도.1 is a block diagram of the present invention.
제2도는 제1도의 상세회로도이다.2 is a detailed circuit diagram of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 스위치 20 : 트리거회로10: switch 20: trigger circuit
30 : 제어회로 40 : 전압변화감지회로30: control circuit 40: voltage change detection circuit
50 : 충전 배터리 60 : 급속충전 표시회로50: charge battery 60: fast charge display circuit
본 고안은 배터리 급속 충전 제어회로에 관한 것으로서, 특히 배터리의 충전전압이 강하됨을 감지하여 배터리의 충전을 제어하는 회로에 관한 것이다.The present invention relates to a battery fast charging control circuit, and more particularly to a circuit for controlling the charging of the battery by detecting the charge voltage of the battery drops.
일반적으로 급속충전은 배터리의 급속충전중 충전전압의 최고치에 도달 후 강하됨을 감지하여 공급전원을 차단시키는 방법과 급속충전시 배터리의 셀(cell) 온도가 상승됨에 따라 미리 설정된 레벨의 온도에 도달하게 되면 공급전원을 차단시키는 방법이 있으나, 후자의 경우에는 온도센서가 배터리 주변의 주변온도에 따라 신뢰성이 떨어지는 결점이 있었다.In general, the fast charging method detects a drop after reaching the maximum charging voltage during the rapid charging of the battery and cuts off the power supply, and reaches the preset level of temperature as the battery cell temperature increases during the rapid charging. There is a method to cut off the power supply, but in the latter case, the temperature sensor has a drawback that the reliability is lower depending on the ambient temperature around the battery.
또한, 전자의 최고치에 도달후 전압강하되는 급속충전 Ni-Cd배터리는 충전회로와 제어회로를 사용하여서 1내지 1.5시간내에 급속충전되는데, 이러한 배터리는 충전전압이 최고치에 도달한 후, 배터리의 충전전압이 ▲V만큼 강하되는 특성이 있다.In addition, the fast-charge Ni-Cd battery that drops in voltage after reaching the maximum value of electrons is rapidly charged within 1 to 1.5 hours by using a charging circuit and a control circuit. Such a battery is charged after the charging voltage reaches the maximum value. There is a characteristic that the voltage drops by ▲ V.
따라서, 본 고안은 상기한 온도센서 방식보다 더욱 안정된 신뢰성을 갖는 충전전압의 전압변화량을 감지하는 방식을 사용하여서 과충전을 방지하고, 또한 배터리의 주변온도에 관계없이 안정된 급속 충전 제어회로를 제공하는데 그 목적이 있다.Accordingly, the present invention prevents overcharging by using a method of detecting a voltage change amount of a charging voltage having more stable reliability than the above-described temperature sensor method, and also provides a stable rapid charging control circuit regardless of the ambient temperature of the battery. There is a purpose.
이하 첨부된 도면에 의거하여 본 고안의 실시예를 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
제1도는 본 고안의 블록도로서, 충전용 전류제한 공급전원(B+)은 스위치(10)의 스위칭에 따라 트리거회로(20)와 전압변화감지회로(40)에 인가되고, 트리거회로(20)에서 발생되는 트리거신호에 의해서 제어회로(30)가 동작되어 공급전원(B+)이 제어회로(30)를 통하여 충전용 배터리(50)에 공급되어 충전되며, 상기한 스위치(10)의 스위칭에 의해 인가되는 전원(B+)과 기존전압을 비교하여 충전 배터리(50)의 충전전압 변화량을 검출하는 전압변화 감지회로(40)를 연결하여 구성되었다.1 is a block diagram of the present invention, the charging current limiting supply power (B +) is applied to the trigger circuit 20 and the voltage change detection circuit 40 in accordance with the switching of the switch 10, the trigger circuit 20 The control circuit 30 is operated by the trigger signal generated by the power supply (B +) is supplied to the rechargeable battery 50 through the control circuit 30 to be charged, by the switching of the switch 10 The voltage change detection circuit 40 for detecting the charge voltage change amount of the rechargeable battery 50 is compared by comparing the applied power B + with the existing voltage.
또한, 표시회로(60)는 충전 배터리(50)의 충전시에 충전중임을 발광표시하는 회로이다.In addition, the display circuit 60 is a circuit for displaying light while the rechargeable battery 50 is being charged.
제2도는 상기한 구성을 갖는 본 고안의 상세한 회로도로서, 배터리의 충전용 공급전원(B+)은 접지된 다이오드(D1)와 콘덴서(C1)를 통해서 일정전압이 회로에 인가되는데, 이 전원(B+)은 일반충전시에는 다이오드(D2) 및 저항(R5)을 통하여 배터리(50)에 인가되어 충전되도록 연결하였다.2 is a detailed circuit diagram of the present invention having the above-described configuration, wherein the charging power supply B + of the battery is supplied with a constant voltage to the circuit through the grounded diode D1 and the capacitor C1. ) Is connected to the battery 50 to be charged through the diode (D2) and the resistor (R5) during normal charging.
급속충전시에는 스위치(10)를 통해서 저항(R1, R2)과 콘덴서(C2)로 구성된 트리거회로(20)에 인가되어 트리거신호가 발생되도록 연결하고, 이 트리거 신호가SCR 및 트랜지스터(Q2)로 구성된 제어회로(30)에 인가되어 SCR를 도통시키므로써 전원(B+)이 배터리(50)에 인가되어 급속 충전되도록 연결하며, 또한 후술하는 전압변화 감지회로(40)에서 전압 변화량이 감지되면 트랜지스터(Q1)가 도통되어 배터리에 인가되는 전원을 차단시키도록 연결되고, 이 전원(B+)이 발광다이오드(LED)에 인가되어 급속충전 중임을 표시하도록 연결하였다.In the case of rapid charging, the trigger signal is applied to the trigger circuit 20 including the resistors R1 and R2 and the capacitor C2 through the switch 10 so as to generate a trigger signal, and the trigger signal is connected to the SCR and the transistor Q2. The power supply B + is applied to the battery 50 by being applied to the configured control circuit 30 so as to conduct the SCR, and connected to the battery 50 so as to be rapidly charged. Q1) was turned on to cut off the power applied to the battery, and this power (B +) was applied to the light emitting diode (LED) to connect to indicate that it is rapidly charging.
상기 전압변화량 감지회로(40)는 기준전압 설정부(41), 충전전압 감지부(42) 및 비교부(43)로 구성되는데, 상기 기준전압 설정부(41)는 상기 SCR을 통한 전원이 콘덴서(C3), 다이오드(D5) 및 저항(R9)을 거쳐 트랜지스터(Q2)의 베이스에 인가되어 트랜지스터(Q2)가 구동되고, 트랜지스터(Q2)의 구동에 따라 콜렉터에 접속된 콘덴서(C4)가 충, 방전되어 비교부(43)의 연산증폭기(OP1, OP2)의 반전단자의 전압 즉, 기준전압을 설정하도록 연결 구성되었다.The voltage change detection circuit 40 is composed of a reference voltage setting unit 41, a charging voltage detection unit 42 and a comparison unit 43, the reference voltage setting unit 41 is a power supply via the SCR capacitor Transistor Q2 is driven by being applied to the base of transistor Q2 via C3, diode D5 and resistor R9, and capacitor C4 connected to the collector is driven by driving transistor Q2. It is discharged and connected to set the voltage of the inverting terminals of the operational amplifiers OP1 and OP2 of the comparator 43, that is, the reference voltage.
또한, 충전전압 감지부(42)는 제너다이오드(D4) 및 직렬 접속된 저항(R10-R12)으로 구성되어 상기 SCR을 통한 전원(B+)이 전압분배되고, 이 분배전압이 비교부(43)의 연산증폭기(OP1, OP2)의 비반전단자에 인가되어 충전전압을 감지하도록 연결되어 있으며, 비교부(43)는 상기 기준전압 설정부(41)와 충전전압 감지부(42)의 출력을 연산증폭기(OP1, OP2)의 입력으로 하여 전압변화량을 감지하도록 연결 구성되었다.In addition, the charging voltage detector 42 includes a zener diode D4 and resistors R10 to R12 connected in series so that the power B + through the SCR is divided by voltage, and the divided voltage is compared with the comparator 43. The non-inverting terminals of the operational amplifiers OP1 and OP2 are connected to sense the charging voltage, and the comparator 43 calculates the outputs of the reference voltage setting unit 41 and the charging voltage sensing unit 42. It is connected to sense the amount of voltage change as the input of the amplifiers OP1 and OP2.
상기한 구성을 본 고안의 동작을 설명한다.The above configuration describes the operation of the present invention.
일반 충전시에는 스위치(10)가 오프되어 다이오드(D1) 및 콘덴서(C1)를 통해 인가되는 일정전원(B+)이 다이오드(D2) 및 저항(R5)을 통하여 배터리(50)에 인가되어 충전되도록 한다.During normal charging, the switch 10 is turned off so that the constant power B + applied through the diode D1 and the capacitor C1 is applied to the battery 50 through the diode D2 and the resistor R5 to be charged. do.
급속충전시에는 충전 스위치(10)가 온이 되고, 이에 따라 다이오드(D1) 및 콘덴서(C1)를 통한 일정전원(B+)이 트리거회로(20)에 인가되므로 트리거회로(20)를 통하여 트리거신호가 발생되어 제어회로(30)의 SCR의 게이트 단자에 인가된다.During the rapid charging, the charging switch 10 is turned on, and accordingly, a constant power source B + through the diode D1 and the capacitor C1 is applied to the trigger circuit 20, so that the trigger signal is transmitted through the trigger circuit 20. Is generated and applied to the gate terminal of the SCR of the control circuit 30.
따라서, SCR이 온이 되어 이 SCR을 통한 전원 전압(B+)이 저항(R3)과 다이오드(D3)를 거쳐 충전용 배터리(50)에 인가되어 충전됨과 동시에 발광다이오드(LED)에 인가되어 발광 다이오드를 온시키므로 배터리(50)가 충전중임을 표시해 준다.Accordingly, the SCR is turned on so that the power supply voltage B + through the SCR is applied to the rechargeable battery 50 through the resistor R3 and the diode D3 and charged, and is simultaneously applied to the light emitting diode LED to emit light. Turns on to indicate that the battery 50 is being charged.
또한, SCR을 통한 전원전압(B+)이 콘덴서(C3)와 저항(R9)을 거쳐 트랜지스터(Q2)의 베이스에 인가되므로 트랜지스터(Q2)는 온이 된다.In addition, since the power supply voltage B + through the SCR is applied to the base of the transistor Q2 via the capacitor C3 and the resistor R9, the transistor Q2 is turned on.
그러므로, 트랜지스터(Q2)가 도통되고 있는 동안에는 콘덴서(C4)에 충전된 전하가 저항(R13) 및 트랜지스터(Q2)를 통하여 방전하게 된다.Therefore, while the transistor Q2 is conducting, the electric charge charged in the capacitor C4 is discharged through the resistor R13 and the transistor Q2.
즉, 트랜지스터(Q2)이 베이스 전위가 0.6V가 될 때까지는 트랜시스터(Q2)가 온상태를 유지하므로 콘덴서(C4)의 전위가 인가되는 비교부(43)의 연산 증폭기(OP1, OP2)의 반전단자에는 거의 OV전위를 유지하게 된다.That is, since the transistor Q2 remains on until the transistor Q2 becomes 0.6V, the op amps OP1 and OP2 of the comparator 43 to which the potential of the capacitor C4 is applied. The reverse terminal maintains almost the OV potential.
이때, 연산증폭기(OP1, OP2)의 비반전단자에는 제너 다이오드(D4)에 의한 일정전압이 저항(R10, R11, R12)에 의해 분압되어 인가되므로 연산증폭기(OP1, OP2)의 출력은 모두 하이레벨이 된다.At this time, since the constant voltage by the zener diode D4 is divided and applied to the non-inverting terminals of the operational amplifiers OP1 and OP2 by the resistors R10, R11 and R12, the outputs of the operational amplifiers OP1 and OP2 are all high. It becomes a level.
즉, 트랜지스터(Q2)가 도통되는 시간동안은 콘덴서(C4)에 충전된 전압이 트랜지스터(Q2)를 통하여 흐르게되므로 연산증폭기(OP1, OP2)의 반전단자의 전위가 비반전단자의 전위보다 낮으므로 출력단에는 논리 ＂1＂신호가 나타나게 되지만, 트랜지스터(Q2)의 베이스에 인가되는 전위는 에미터로 흐르는 전류에 의해 점점 떨어진다.That is, since the voltage charged in the capacitor C4 flows through the transistor Q2 during the time that the transistor Q2 is conducted, the potential of the inverting terminals of the operational amplifiers OP1 and OP2 is lower than that of the non-inverting terminal. A logic # 1 signal appears at the output stage, but the potential applied to the base of the transistor Q2 is gradually dropped by the current flowing to the emitter.
따라서, 트랜지스터(Q2)의 베이스 전위가 0.6V이하인 논리 ＂0＂신호로 떨어지면, 트랜지스터(Q2)는 오프되고, 따라서, 연산증폭기(OP)의 하이레벨의 출력전압이 다이오드(D6)를 통하여 콘덴서(C4)에 인가되어 충전되므로 연산증폭기(OP1, OP2)의 반전단자의 전위는 높아진다.Therefore, when the base potential of the transistor Q2 drops to a logic '0' signal of 0.6 V or less, the transistor Q2 is turned off, so that the high level output voltage of the operational amplifier OP passes through the diode D6. Since it is applied to (C4) and charged, the potential of the inverting terminals of the operational amplifiers OP1 and OP2 becomes high.
이때, 콘덴서(C4)에는 연산증폭기(OP2)의 비반전단자에 인가되는 전위가 될 때까지 충전된다.At this time, the capacitor C4 is charged until the potential applied to the non-inverting terminal of the operational amplifier OP2 is reached.
이와같이 충전용 배터리(50)의 충전시간이 거의 끝날때까지는 연산증폭기(OP1)의 출력은 하이레벨을 유지하게 되고, 이 연산증폭기(OP1)의 하이레벨 출력이 저항(R6)을 거쳐 트랜지스터(Q1)의 베이스에 인가되므로 트랜지스터(Q1)는 계속 오프되고, 배터리(50)의 전위는 상기 설명한 바와같이 전압강하가 발생되기 전까지 상승하게 된다.In this way, the output of the operational amplifier OP1 is maintained at a high level until the charging time of the rechargeable battery 50 is almost finished, and the high level output of the operational amplifier OP1 passes through the resistor R6 to the transistor Q1. Transistor Q1 continues to be turned off, so that the potential of battery 50 rises until a voltage drop occurs, as described above.
또한, 상기 설명한 바와같이 콘덴서(C4)에 전압이 충전되어 반전단자의 전위가 상승하면서 연산증폭기(OP2)의 반전단자의 전위가 비반전단자의 전위까지 상승하게 되면 콘덴서(C4)에는 더 이상 전압이 충전되지 않게되어 콘덴서(C4)의 충전전압은 더 이상 상승하지 못하고 고정되게 된다.As described above, when the voltage of the capacitor C4 is charged to increase the potential of the inverting terminal and the potential of the inverting terminal of the operational amplifier OP2 rises to the potential of the non-inverting terminal, the voltage is no longer applied to the capacitor C4. The charge is not charged and the charging voltage of the capacitor C4 no longer rises and is fixed.
그러나, 연산증폭기(OP1)의 비반전단자의 전압은 연산증폭기(OP2)의 비반전단자의 전압보다 높게 설정되어 있으므로, 연산증폭기(OP1)의 반전단자의 전압은 비반전 단자의 전압보다는 낮게 되므로 그 출력은 계속 논리 ＂1＂의 상태를 유지하게 된다.However, since the voltage of the non-inverting terminal of the operational amplifier OP1 is set higher than that of the non-inverting terminal of the operational amplifier OP2, the voltage of the inverting terminal of the operational amplifier OP1 is lower than that of the non-inverting terminal. The output will remain in logic # 1.
이러한 상태에서 충전이 다 될 무렵에 NI-Cd배터리(50)의 충전전위는 상기 설명한 바와 같은 Ni-Cd바테리의 -▲V특성으로 인하여 전압강하가 발생하는데, 배터리 공급전원은 배터리의 전압강하에 의해 변화하게 된다.In this state, the charging potential of the NI-Cd battery 50 decreases due to the-▲ V characteristic of the Ni-Cd battery as described above. To change.
따라서 이로 인해 저항(R10, R11)사이에 걸리는 분압전압이 콘덴서(C4)에 충전된 전압보다 낮아져서 연산증폭기(OP1)의 출력신호는 논리 ＂0＂가 된다.As a result, the divided voltage applied between the resistors R10 and R11 is lower than the voltage charged in the capacitor C4, so that the output signal of the operational amplifier OP1 becomes logic '0'.
이때, 연산증폭기(OP1)의 논리 ＂0＂출력신호에 의해 트랜지스터(Q1)는 도통되어서 배터리(50)에 공급되는 전원(B+)은 차단되어 충전은 완료된다.At this time, the transistor Q1 is turned on by the logic '0' output signal of the operational amplifier OP1, so that the power supply B + supplied to the battery 50 is cut off and charging is completed.
상기한 연산증폭기(OP1, OP2)의 각 비반전단자에 인가되는 전압 즉, 저항(R10-R12) 및 제너다이오드(D4)의 용량을 적절히 선택하여 비반전단자(V1, V2)에 인가되는 전압이 |V1-V2|≤▲V로 되도록 하면 배터리 피크전압에서 강하되는 전압(▲V)을 감지할 수 있게 된다.Voltages applied to the non-inverting terminals of the operational amplifiers OP1 and OP2, that is, voltages applied to the non-inverting terminals V1 and V2 by appropriately selecting the capacitances of the resistors R10 to R12 and the zener diode D4. By setting | V1-V2 | ≤ ▲ V, it is possible to detect a voltage (▲ V) that falls from the peak voltage of the battery.
즉, 배터리(50)의 충전전압이 최고치까지 도달한 다음 ▲V까지의 전압변화가 발생되면 연산증폭기(OP1)의 출력단 신호가 논리 ＂0＂상태로 바뀌어져서 공급전원(B+)이 배터리(50)에 공급되지 않도록 트랜지스터(Q1)를 도통시켜 전원공급을 차단시킴으로써 급속충전이 완료되고, 배터리는 D2, R5을 통해 표준충전상태가 된다.That is, when the charging voltage of the battery 50 reaches the maximum value and a voltage change up to ▲ V occurs, the output terminal signal of the operational amplifier OP1 is changed to the logic '0' state so that the power supply B + is supplied to the battery 50. By turning off the power supply by turning on the transistor Q1 so as not to be supplied to the transistor), the rapid charging is completed, and the battery is in the standard charging state through D2 and R5.
이상과 같이 본 고안에 의하면 배터리의 급속충전이 배터리의 주변온도에 관계없이 진행되므로 신뢰성이 증대되고, 또한 과충전으로 인해 배터리의 수명단축을 해소시킬 수 있다.According to the present invention as described above, since the rapid charging of the battery proceeds regardless of the ambient temperature of the battery, the reliability is increased, and the life of the battery can be shortened due to the overcharging.
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| Application Number | Priority Date | Filing Date | Title |
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| KR2019870002806U KR900003185Y1 (en) | 1987-03-05 | 1987-03-05 | Circuit controlling quick charging of battery |
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| KR2019870002806U KR900003185Y1 (en) | 1987-03-05 | 1987-03-05 | Circuit controlling quick charging of battery |
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| KR900003185Y1 true KR900003185Y1 (en) | 1990-04-14 |
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| KR20160080909A (en) * | 2014-12-29 | 2016-07-08 | 주식회사 엘지씨엔에스 | Switchable uninterruptible power supply system and battery charging method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160080909A (en) * | 2014-12-29 | 2016-07-08 | 주식회사 엘지씨엔에스 | Switchable uninterruptible power supply system and battery charging method thereof |
| US9859751B2 (en) | 2014-12-29 | 2018-01-02 | Lg Cns Co., Ltd. | Switchable uninterruptible power supply system and battery charging method thereof |
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