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KR100258031B1 - Battery discharge device - Google Patents

Battery discharge device Download PDF

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KR100258031B1
KR100258031B1 KR1019970049269A KR19970049269A KR100258031B1 KR 100258031 B1 KR100258031 B1 KR 100258031B1 KR 1019970049269 A KR1019970049269 A KR 1019970049269A KR 19970049269 A KR19970049269 A KR 19970049269A KR 100258031 B1 KR100258031 B1 KR 100258031B1
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South Korea
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battery
discharge
resistor
current
unit
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KR19990026944A (en
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천영식
박호철
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김형국
한전기공주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/448—End of discharge regulating measures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

본 발명은 축전지 방전장치에 관한 것으로, 축전지의 출력을 병렬상의 저항체와 연결시켜 저항체를 통과한 전류치를 최소 방전치와 비교하여 최소 방전치 이하로 되면 방전을 자동 차단 시키도록 기능하는 제어부와, 제어부의 제어 출력에 연동하여 축전지의 출력이 저항체로 공급되는 것을 차단하는 스위치를 포함하여 이루어지며, 바테리의 방전 전류를 병렬상의 저항체를 통하여 좁은 공간에서 신속히 방전 가능케 하고, 방전시의 저항체를 보호토록 팬부를 사용하며, 방전 전류가 기준치 이하가되면 방전을 멈추도록 제어부가 스위치를 오프 시키므로 과방전으로인한 축전지의 성능 저하를 막을수 있다.The present invention relates to a battery discharging device, comprising: a control unit that connects the output of the battery with a resistor in parallel, and compares the current passing through the resistor with the minimum discharge value to automatically cut off the discharge when the discharge is less than the minimum discharge value; And a switch to block the output of the battery from being supplied to the resistor in conjunction with the control output of the battery.The battery can discharge the discharge current of the battery quickly in a narrow space through a parallel resistor and protect the resistor during discharge. When the discharge current is lower than the reference value, the controller turns off the switch so as to stop the discharge, thereby preventing the performance degradation of the battery caused by the over discharge.

Description

축전지의 방전장치Battery discharge device

본 발명은 축전지의 방전장치에 관한 것으로, 특히 축전지의 출력에 병렬상의 저항체를 연결시키고, 각 저항체는 스위치에 의하여 스위칭 되도록하며, 스위치는 방전 한계 전류 이하일 때 이를 감지하여 오프 되도록 지시하는 제어부에 의하여 구동 되도록 함으로써, 축전지의 방전을 신속히 안전하게 할수 있도록 한 축전지의 방전장치에 관한 것이다.The present invention relates to a discharge device of a battery, and in particular, by connecting a resistor in parallel to the output of the battery, each resistor is to be switched by a switch, the switch is sensed by the control unit for instructing it to turn off when it is below the discharge limit current The present invention relates to a discharge device for a storage battery that can be safely driven to safely discharge the battery.

일반적으로 비상전원으로 축전지를 사용하고있는 전기설비에서는 축전지의 건전성과 용리 시험을 위하여 주기적으로 방전 시험을 수행한다. 이때의 축전지는 발, 변전소 대용량 축전지, 대용량 축전지, 산업 설비의 비상 전원용 축전지, 기타 전력회로 시험용 부하로의 축전지 등을 들 수 있다. 이러한 방전장치의 예로는 제1도와같이 축전지(1)의 양단에 저항 발열체인 니크롬선(2)을 임시로 감아서 바닥에 깔아놓고 선풍기로 냉각하면서 방전하는 것이다. 이러한 방식은 니크롬선(2)을 바닥에 깔아 놓는 것이므로 넓은 면적을 차지하고, 저항체간에 접촉되지 않도록 유의하여야 하며 바닥과의 절연 상태를 유지하여야하는 불편함과 안전사고의 위험이 있다.In general, electrical installations that use batteries as emergency power sources are periodically discharged to test their integrity and elution. The storage battery at this time may include a power storage battery, a substation large capacity storage battery, a large capacity storage battery, an emergency power storage battery for an industrial facility, and a battery for an electric power circuit test load. An example of such a discharge device is to temporarily dispose a nichrome wire 2, which is a resistive heating element, on both ends of the storage battery 1, spread it on the floor, and cool it with a fan. In this method, since the nichrome wire 2 is laid on the floor, it takes up a large area, and care must be taken not to contact the resistors, and there is a risk of inconvenience and safety accidents that must be kept insulated from the floor.

제2도는 일군의 대용량 백열 전구(3)를 축전지 양단에 연결시킨 구조로써, 방전이 진행됨에따라 방전 전류를 수시로 일정하게 조정하여 주어야하는 불편함이 있다.2 is a structure in which a group of large-capacity incandescent bulbs 3 are connected to both ends of a storage battery, which is inconvenient to constantly adjust the discharge current as the discharge proceeds.

제3도는 수조(4)에 소금이나 수산화 나트륨 용액(5)을 넣어 전극(6)을 축전지(1)의 양 출력단에 연결시키고 방전하는바, 전극(6) 간격(L)을 수동으로 조정하여 방전 전류를 조정하면서 방전한다. 이렇게 수조(4)를 이용하는 경우는 전해물질의 전기 분해로 악취가 나고 전해물질이 산업 폐기물로되어 오염 발생의 요인이 되는 문제점이 있다.FIG. 3 shows that the electrode 6 is connected to both output terminals of the battery 1 by discharging salt or sodium hydroxide solution 5 into the water tank 4, and the electrode 6 is manually adjusted. Discharge while adjusting the discharge current. When the water tank 4 is used in this way, there is a problem that odor is caused by the electrolysis of the electrolytic material, and the electrolytic material becomes an industrial waste, causing contamination.

본 발명의 목적은 산업 폐기물의 염려 없이 축전지를 보호하면서 방전을 신속히 가능케하는 방전장치를 제공하려는 것이다.SUMMARY OF THE INVENTION An object of the present invention is to provide a discharge device that enables a discharge quickly while protecting a storage battery without concern for industrial waste.

이를 위하여 본 발명은 축전지의 방전은 병렬상의 저항체에 의하여 방전되게 하고, 저항체로의 전류 인가는 스위칭부에 의하여 스위칭되도록하고, 스위칭부는 방전 전류가 한계 전류 이하로 될 때 제어부에서 인식하여 오프되도록함으로써, 축전지의 방전을 신속히 안전하게 방전토록한다.To this end, in the present invention, the discharge of the battery is discharged by a resistor in parallel, the application of the current to the resistor is switched by the switching unit, and the switching unit is recognized by the control unit when the discharge current is below the limit current to turn off by Discharge the battery quickly and safely.

제1도는 종래의 방전장치의 일 예를 나타낸 구성도.1 is a configuration diagram showing an example of a conventional discharge device.

제2도는 종래의 방전장치의 다른예를 나타낸 구성도.2 is a configuration diagram showing another example of a conventional discharge device.

제3도는 종래의 방전장치의 또 다른 예를 나타낸 구성도.3 is a configuration diagram showing still another example of a conventional discharge device.

제4도는 본 발명의 방전장치의 일 예를 나타낸 구성도.4 is a configuration diagram showing an example of the discharge device of the present invention.

제5도는 본 발명에 사용되는 제어부를 기초로한 스위칭부의 관계 구성을 보인 일 예시도 이다.5 is an exemplary view showing a relationship configuration of the switching unit based on the control unit used in the present invention.

즉 본 발명은 축전지의 일 출력을 스위칭 하도록 스위치가 병렬 접속된 스위칭부와, 스위칭부의 각 스위치에 대응하여 직결되어 축전지의 다른 출력과 연결된 저항체로 이루어진 저항체부와, 저항체부를 통과한 전류를 괘한 시켜 기준 전류 이하로 될 때 상기 스위치부를 오프시켜 방전을 멈추도록하는 제어부로 이루어진 것을 특징으로하는 축전지 방전장치를 제공하려는 것이다.That is, according to the present invention, a switch unit is connected in parallel to switch one output of the battery, a resistor unit made of a resistor connected directly to each switch of the switching unit and connected to the other output of the battery, and a current passing through the resistor unit is calculated. It is to provide a battery discharge device characterized in that the control unit for stopping the discharge by turning off the switch unit when the reference current is less than.

이러한 본 발명은 축전지의 방전 전류가 한계 전류 이하로 될 때 방전을 멈추도록 제어부가 스위치를 오프 시키므로 과방전으로인한 축전지의 성능 저하를 막을수 있다.The present invention can prevent the performance degradation of the battery caused by the over-discharge because the control unit switches off the switch to stop the discharge when the discharge current of the battery is less than the limit current.

이하 본 발명의 실시예를 도면을 참조하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

제4도는 본 발명의 구성도로, 축전지(1)의 일출력에 다수의 단위 스위치(SW1-SWn)를 병렬상으로 연결시켜 스위칭하는 스위칭부(10)와, 각 스위치(SW1-SWn)의 출력단에 대응하여 연결된 단위 저항체(R1-Rn)로 이루어진 저항체부(20)와, 상기 축전지(1)의 괘한 전류를 인가받아 한계전류 이하일 때 스위치를 오프 시키도록 기능하는 제어부(30)로 이루어진다. 상기 제어부(30)는 팬부(40)를 구동토록 이루어진다.4 is a configuration diagram of the present invention, a switching unit 10 for switching a plurality of unit switches (SW1-SWn) in parallel to one output of the battery 1, and the output stage of each switch (SW1-SWn) The resistor unit 20 is formed of unit resistors R1-Rn connected to each other, and a control unit 30 is configured to switch off the switch when the rated current of the storage battery 1 is below the limit current. The controller 30 is configured to drive the fan unit 40.

제5도는 본 발명의 제어부(30)와 스위칭부(10)의 일예를 나타낸 예시도로, 축전지(1)의 설정 한계 전류(i1)와, 축전지(1)의 괘환 전류(P1)를 공통으로 인가받아 비교하여 괘환 전류가 설정 한계치를 밑돌면 스위치(SW1-SWn)구체적인 일 예인 트랜지스터(TR1-TRn)를 오프시키는 비교기(31-3n)로 이루어지는 제어부(30); 상기 비교기(31-3n)의 대응 출력에 바이어스되어 스위칭되는 트랜지스터(TR1-TRn)로 이루어진 스위칭부(10)와; 상기 스위칭부(10)의 트랜지스터(TR1-TRn)가 스위칭 작용함에 따라 축전지(1)의 전류를 인가받아 방전되도록하는 저항체(R1-Rn)로 이루어진 저항체부(20)로 구성된다. 상기 전류(i1)는 팬부(40)를 구동토록 이루어진다. 상기 제어부(30)는 비교기(31-3n) 외의 다른 구성으로도 한계전류(i1) 이하일 때 이를 검출하는 기능을 수행하도록 구성할 수 있다.5 is an exemplary view showing an example of the control unit 30 and the switching unit 10 of the present invention, and applies the set limit current i1 of the storage battery 1 and the switching current P1 of the storage battery 1 in common. A control unit 30 including a comparator 31-3n for turning off the transistors TR1-TRn, which are specific examples of the switches SW1-SWn when the feedback current falls below the set limit value. A switching unit (10) comprising transistors (TR1-TRn) biased and switched to corresponding outputs of the comparators (31-3n); As the transistors TR1-TRn of the switching unit 10 switch, the resistor unit 20 is formed of resistors R1-Rn to receive and discharge a current of the battery 1. The current i1 is configured to drive the fan unit 40. The controller 30 may be configured to perform a function of detecting when the threshold current i1 is less than or equal to other components other than the comparator 31-3n.

이러한 본 발명은 한계 전류(i1)를 미리 설정하여 별도의 전원으로 구비하고, 한계전류(i1)를 팬부(40)에도 인가하여 저항체(R1-Rn)를 냉각하도록 한다. 물론 한계 전류(i1)가 아니고 별도의 전류원으로 팬부(40)를 구동 시켜도 좋다. 우선 본 발명을 사용할 때는 제4도와 같이 축전지(1)에 스위치부(10)가 인가되도록 하고, 스위칭부(10)는 제어부(30)에 의하여 제어되도록 하고, 스위칭부(10)가 온되면 저항체부(20)가 온되어 축전지(1)의 전류가 방전된다. 즉 축전지(1)의 +전압이 스위칭부(10), 저항체부(20)를 통하여 -전압으로 루프를 이룸으로써 저항체부(20)에서 축전지(1)의 전류가 방전된다. 이때 축전지(1)에서 출력되는 전류(P1)를 제어부(30)로 괘환시켜 기존의 한계 전류(i1)와 비교하면 제어부(30)에서는 비교한 결과를 스위칭부(10)에 인가하여 저항체부(20)로의 전류 인가 여부를 결정한다. 구체적으로 제5도에서와 같이 예를들어 제어부(30)를 이루는 일 비교기(31)의 부입력단에 한계 전류(i1)가 인가되고, 정 입력단에 괘환 전류(P1)가 인가될 때 평소 방전시에 는 방전 괘환 전류(P1)가 한계 전류(i1)보다 높지만 과 방전에 의하여 전류가 현계전류(i1)보다 낮아지면, 로레벨이 출력되고, 이에따라 npn트랜지스터(TR1)의 베이스에 바이어스의 제공이 차단되므로 축전지(1)의 출력이 저항체(R1)로 인가되는 것을 차단시킨다. 즉, 방전전류 설정이 용이하여 설정된 전류로 일정하게 방전 시키고 과 방전을 자연스럽게 방지시킨다. 또한 별도의 저항체를 설치하지 않고 본 발명의 저항체를 사용하여 방전하므로 사용이 편리하다. 저항체부(20)가 별도의 공간을 차지하지 않고 이루어질수 있으므로 장치를 소형화 시킬수 있다. 결국 방전 종지전압을 설정할 수 있고, 설정전압에서 자동차단되므로 축전지의 손상을 막을 수 있다.In the present invention, the limit current i1 is set in advance and provided as a separate power source, and the limit current i1 is also applied to the fan unit 40 to cool the resistors R1-Rn. Of course, the fan unit 40 may be driven by a separate current source instead of the limit current i1. First, when using the present invention, as shown in FIG. 4, the switch unit 10 is applied to the storage battery 1, the switching unit 10 is controlled by the control unit 30, and when the switching unit 10 is turned on, the resistor The unit 20 is turned on to discharge the current of the storage battery 1. That is, the current of the battery 1 is discharged from the resistor unit 20 by the + voltage of the battery 1 looping to the − voltage through the switching unit 10 and the resistor unit 20. At this time, the current P1 output from the battery 1 is converted to the control unit 30, and compared with the existing limit current i1. The control unit 30 applies the result of the comparison to the switching unit 10 so that the resistor unit ( 20) decide whether or not to apply current to. Specifically, as shown in FIG. 5, for example, when the limit current i1 is applied to the negative input terminal of the comparator 31 constituting the control unit 30, and the feed current P1 is applied to the positive input terminal, When the discharge switching current P1 is higher than the limit current i1 but the current is lower than the current current i1 due to over discharge, a low level is output, whereby a bias is provided to the base of the npn transistor TR1. Since it is blocked, the output of the battery 1 is blocked from being applied to the resistor R1. That is, it is easy to set the discharge current so that it is discharged constantly at the set current and prevents over discharge naturally. In addition, since it is discharged using the resistor of the present invention without installing a separate resistor, it is convenient to use. Since the resistor unit 20 can be made without occupying a separate space, the device can be miniaturized. Eventually, the discharge end voltage can be set, and the circuit is cut off at the set voltage, thereby preventing damage to the battery.

이상과 같이 본 발명은 저항체를 통하여 전류를 방전시키므로 방전장치를 소형화 시킬수 있어 운반 및 조작이 간편하고, 트랜지스터를 사용한 스위칭 방식이므로 스위치 구현 공간을 작게 차지하고, 제어부에서는 축전지의 한계전류 이하로 방전될 때 스위칭부를 오프시키도록 함으로써 과 방전에 따른 축전지의 마모를 막을 수 있다. 또한 별도의 하우징에 본 발명을 구비한다면 방전시에 유발될수 있는 전기 안전 사고를 방지할 수 있다.As described above, the present invention discharges the current through the resistor, so that the discharge device can be miniaturized, and thus the transport and operation are simple, and the switching method using the transistor occupies a small space for implementing the switch. By turning off the switching unit, wear of the battery due to overdischarge can be prevented. In addition, if the present invention is provided in a separate housing, it is possible to prevent an electrical safety accident that may be caused during discharge.

Claims (3)

축전지의 일 출력을 스위칭 하도록 스위치가 병렬 접속된 스위칭부와, 스위칭부의 각 스위치에 대응하여 직결되어 축전지의 다른 출력과 연결된 저항체로 이루어진 저항체부와, 저항체부를 통과한 전류를 괘한 시켜 기준 전류 이하로 될 때 상기 스위치부를 오프시켜 방전을 멈추도록하는 제어부로 이루어진 것을 특징으로하는 축전지 방전장치.A switch unit in which a switch is connected in parallel to switch one output of the battery, a resistor unit made of a resistor connected directly to each switch of the switching unit, and connected to the other output of the battery, and a current passing through the resistor unit is determined to be below the reference current. And a control unit configured to stop discharging when the switch unit is turned off. 제1항에 있어서, 제어부는 최소 방전전류에 상응하는 별도의 전류 공급원과, 저항체를 통과한 바테리 전류를 비교하여 바테리 전류가 한계치 이하로 되면 스위칭부의 스위치를 오프 시키는 비교기를 포함하여 이루어짐을 특징으로하는 축전지 방전장치.The method of claim 1, wherein the control unit comprises a separate current supply source corresponding to the minimum discharge current and the comparator for switching off the switching unit when the battery current is less than the limit by comparing the battery current passing through the resistor, characterized in that made Battery discharge device. 제1항에 있어서, 제어부는 상기 저항체를 냉각 시키는 팬부를 구동하는 전원을 또한 인가하는 기능이 부가된 것을 특징으로하는 축전지 방지장치.The battery battery preventing device according to claim 1, wherein the control unit is further provided with a function of applying a power source for driving the fan unit for cooling the resistor.
KR1019970049269A 1997-09-26 1997-09-26 Battery discharge device Expired - Lifetime KR100258031B1 (en)

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