KR20070005315A - Circuit for measuring voltage of battery block - Google Patents

Circuit for measuring voltage of battery block Download PDF

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Publication number
KR20070005315A
KR20070005315A KR1020050060584A KR20050060584A KR20070005315A KR 20070005315 A KR20070005315 A KR 20070005315A KR 1020050060584 A KR1020050060584 A KR 1020050060584A KR 20050060584 A KR20050060584 A KR 20050060584A KR 20070005315 A KR20070005315 A KR 20070005315A
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South Korea
Prior art keywords
relay
measurement
capacitor
side connected
battery block
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KR1020050060584A
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Korean (ko)
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KR100736684B1 (en
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박원남
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현대자동차주식회사
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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
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A circuit for measuring a battery block voltage is provided to measure voltages of a number of battery blocks rapidly by using a small number of relays. A relay part(100) comprises a number of relays connected to a battery block to measure a voltage in parallel. One side of a first measurement relay(110) is connected to an odd-numbered relay through a first condenser(C1), and another side of the first measurement relay is connected to a CPU. One side of a second measurement relay(120) is connected to an even-numbered relay through a second condenser(C2), and another side of the second measurement relay is connected to the CPU. A transistor is connected to a relay of the relay part, the first measurement relay and the second measurement relay respectively.

Description

배터리 블럭 전압 측정회로 {Circuit for measuring voltage of battery block}Battery block voltage measuring circuit {Circuit for measuring voltage of battery block}

도 1은 종래의 포토모스 릴레이 제어회로의 일례를 나타내는 회로도,1 is a circuit diagram showing an example of a conventional photomoss relay control circuit;

도 2는 도 1의 제어회로의 타이밍 챠트,2 is a timing chart of the control circuit of FIG.

도 3은 본 발명의 배터리 블럭 전압 측정회로의 일 실시예를 나타내는 Figure 3 shows an embodiment of the battery block voltage measurement circuit of the present invention

회로도,        Schematic,

도 4는 도 3의 제어회로의 타이밍 챠트,4 is a timing chart of the control circuit of FIG.

도 5는 본 발명의 배터리 블럭 전압 측정회로의 다른 실시예를 나타내는 Figure 5 shows another embodiment of the battery block voltage measurement circuit of the present invention

회로도,       Schematic,

도 6은 도 5의 제어회로의 타이밍 챠트.6 is a timing chart of the control circuit of FIG. 5;

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>

100 : 릴레이부 110 : 제1측정릴레이100: relay unit 110: first measurement relay

120 : 제2측정릴레이 200 : 배터리 블럭120: second measurement relay 200: battery block

300 : 트랜지스터 C1 : 제1축전기300: transistor C1: first capacitor

C2 : 제2축전기C2: second capacitor

본 발명은 배터리 블럭 전압 측정회로에 관한 것으로서 특히, 하이브리드 전기자동차의 배터리 시스템의 안전상태 및 배터리의 충방전 상태를 알기 위해 배터리 블럭의 전압을 측정하기 위한 것으로, 짝수번째와 홀수번째 배터리 블럭을 시간 간격을 두고 번갈아 충전하여 CPU에 공급하여 배터리 블럭의 전압 상태를 연속적으로 측정할 수 있도록 하는 배터리 블럭 전압 측정회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery block voltage measuring circuit, and more particularly, to measure the voltage of a battery block in order to know the safety state of a battery system and a charge / discharge state of a battery of a hybrid electric vehicle. The present invention relates to a battery block voltage measuring circuit that can alternately charge and supply the CPU to the CPU to continuously measure the voltage state of the battery block.

도 1은 종래의 포토모스 릴레이 제어회로의 일례를 나타내는 회로도이고, 도 2는 도 1의 제어회로의 타이밍 챠트(Chart)로서, 이는 각각의 포토모스 릴레이(Photomos-Relay)의 구동전원을 직렬 연결한 방식으로서, 각각의 배터리 블럭 전압을 동시에 콘덴서에 저장하여 CPU의 AD 컨버터(ADC)를 통해 모니터링이 가능하므로 도 2와 같이 측정시간을 최적화 할 수 있는 장점이 있다.FIG. 1 is a circuit diagram showing an example of a conventional photomoss relay control circuit, and FIG. 2 is a timing chart of the control circuit of FIG. 1, which is connected in series with the driving power of each photomos-relay. As one method, since each battery block voltage is simultaneously stored in a condenser and can be monitored through the AD converter (ADC) of the CPU, there is an advantage of optimizing measurement time as shown in FIG. 2.

그러나 이 제어회로는 포토모스 릴레이 내부의 많은 다이오드(Diode) 중 한 개라도 불량이 발생하게 되면 전체 포토모스 릴레이 회로의 동작불능 상태를 가져올 수 있고, 측정하고자 하는 배터리 채널의 수에 비하여 많은 포토모스 릴레이가 필요하며, 회로가 복잡하고, 포토모스 릴레이의 직렬연결에 따른 추가의 높은 전원이 필요하게 되는 단점이 있다.However, this control circuit can lead to the inoperable state of the entire photomoss relay circuit if any one of the many diodes in the photomoss relay fails, and more photomoss than the number of battery channels to be measured. There is a disadvantage in that a relay is required, a circuit is complicated, and an additional high power source is required according to the series connection of the photomoss relays.

본 발명은 상기의 결점을 해소하기 위한 것으로, 배터리 블럭의 전압을 측정함에 있어서, 적은 개수의 릴레이를 사용하여 보다 빠르게 다수의 배터리 블럭의 전압을 측정할 수 있고, 별도의 추가 전원이 불필요하며, 보다 안정적인 ECU를 구현할 수 있도록 하는 배터리 블럭 전압 측정회로를 제공하고자 한다.The present invention is to solve the above-described drawbacks, in measuring the voltage of the battery block, it is possible to measure the voltage of a plurality of battery blocks more quickly using a small number of relays, no additional power supply is required, To provide a battery block voltage measurement circuit that can implement a more stable ECU.

이러한 본 발명은, 전압값을 측정하고자 하는 배터리 블럭에 각각 병렬로 연결되는 다수개의 릴레이로 이루어지는 릴레이부와; 일측이 상기 릴레이부 중 홀수번째 릴레이와 제1축전기를 통하여 연결되고, 타측이 CPU와 연결되는 제1측정릴레이와; 일측이 상기 릴레이부 중 짝수번째 릴레이와 제2축전기를 통하여 연결되고, 타측이 CPU와 연결되는 제2측정릴레이와; 상기 릴레이부의 릴레이와, 상기 제1측정릴레이 및 제2측정릴레이 각각과 연결되는 트랜지스터를 포함하여 구성함으로써 달성된다.The present invention includes a relay unit comprising a plurality of relays each connected in parallel to a battery block to measure a voltage value; A first measurement relay having one side connected to an odd number relay among the relay units through a first capacitor and the other side connected to a CPU; A second measurement relay having one side connected to an even-numbered relay and a second capacitor among the relay units, and the other side connected to a CPU; And a transistor connected to each of the relay unit and the first measurement relay and the second measurement relay.

본 발명의 실시예를 첨부 도면을 참고하여 상세히 설명하면 다음과 같다.An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명의 배터리 블럭 전압 측정회로의 일 실시예를 나타내는 회로도이고, 도 4는 도 3의 제어회로의 타이밍 챠트로서, 본 발명은, 전압값을 측정하고자 하는 배터리 블럭(200)에 각각 병렬로 연결되는 다수개의 릴레이로 이루어지는 릴레이부(100)와; 일측이 상기 릴레이부(100) 중 홀수번째 릴레이와 제1축전기 (C1)를 통하여 연결되고, 타측이 CPU와 연결되는 제1측정릴레이(110)와; 일측이 상기 릴레이부(100) 중 짝수번째 릴레이와 제2축전기(C2)를 통하여 연결되고, 타측이 CPU와 연결되는 제2측정릴레이(120)와; 상기 릴레이부(100)의 릴레이와, 상기 제1측정릴레이(110) 및 제2측정릴레이(120) 각각과 연결되는 트랜지스터(300)를 포함하여 구성되는 것을 그 기술상의 특징으로 한다.FIG. 3 is a circuit diagram showing an embodiment of the battery block voltage measuring circuit of the present invention, and FIG. 4 is a timing chart of the control circuit of FIG. 3. The present invention relates to each of the battery blocks 200 to measure voltage values. A relay unit 100 including a plurality of relays connected in parallel; A first measurement relay 110 having one side connected to an odd-numbered relay and a first capacitor C1 among the relay units 100, and the other side connected to a CPU; A second measurement relay 120 having one side connected to an even-numbered relay and a second capacitor C2 among the relay units 100, and the other side connected to a CPU; Technical features of the present invention include a relay of the relay unit 100 and a transistor 300 connected to each of the first measurement relay 110 and the second measurement relay 120.

상기 제1측정릴레이(110) 및 제2측정릴레이(120)와 CPU와의 연결은 BV1, BV2 단자를 통하여 CPU와 연결되고, 상기 트랜지스터(300)는 상기 릴레이부(100)를 여닫는 스위칭 역할을 하게 된다.The connection between the first measurement relay 110 and the second measurement relay 120 and the CPU is connected to the CPU through the BV1 and BV2 terminals, and the transistor 300 serves to open and close the relay unit 100. do.

상기 릴레이부(100)의 각각의 릴레이와 제1측정릴레이(110) 및 제2측정릴레이(120)는, 포토모스 릴레이가 사용되는데, 포토모스 릴레이는 코일을 사용하지 않고, LED를 이용하는 릴레이이다.Each relay, the first measurement relay 110 and the second measurement relay 120 of the relay unit 100, a photo MOS relay is used, the photo MOS relay is a relay using an LED without using a coil. .

도 3에서 도시하는 바와 같이, 포토모스 릴레이는 내부에 LED와 스위치가 각각 두개씩 구성되는 릴레이로서, LED의 발광에 의하여 스위칭되며 두 개의 스위치는 동시에 닫히거나 열리게 된다.As shown in FIG. 3, the photomoss relay is a relay in which two LEDs and two switches are formed therein. The photomoss relays are switched by light emission of the LEDs, and the two switches are simultaneously closed or opened.

도 5는 본 발명의 배터리 블록 전압 측정회로의 다른 실시예를 나타내는 회로도이고, 도 6은 도 5의 제어회로의 타이밍 챠트로서, 본 발명은, 전압값을 측정하는 배터리 블록(200)에 각각 병렬로 연결되는 다수개의 릴레이로 이루어지는 릴레이부(100)와; 일측이 상기 릴레이부(100) 중 홀수번째 릴레이와 제1축전기(C1)를 통하여 연결되고, 타측이 CPU와 연결되는 제1측정릴레이(110)와; 일측이 상기 릴레 이부(100) 중 짝수번째 릴레이와 제2축전기(C2)를 통하여 연결되고, 타측이 CPU와 연결되는 제2측정릴레이(120)와; 일측이 제1축전기(C1)를 방전하기 위한 릴레이와 연결되고, 타측이 제2축전기(C2)를 방전하기 위한 릴레이와 연결되는 방전용릴레이(130)와; 상기 릴레이부(100)의 짝수번째 릴레이와 홀수번째 릴레이를 동시에 구동시키는 트랜지스터(Q1, Q2)와; 상기 제1측정릴레이(110) 및 제2측정릴레이(120)를 동시에 구동시키는 트랜지스터(Q3)와 제1축전기(C1) 및 제2축전기(C2)를 동시에 방전시키는 방전용릴레이(130)를 구동시키는 트랜지스터(Q4)를 포함하여 구성되는 것을 그 기술상의 특징으로 한다.FIG. 5 is a circuit diagram showing another embodiment of the battery block voltage measuring circuit of the present invention. FIG. 6 is a timing chart of the control circuit of FIG. A relay unit 100 including a plurality of relays connected to each other; A first measurement relay 110 having one side connected to an odd-numbered relay and a first capacitor C1 of the relay unit 100, and the other side connected to a CPU; A second measurement relay 120 having one side connected to an even-numbered relay and a second capacitor C2 of the relay unit 100 and the other side connected to a CPU; A discharge relay 130 having one side connected to a relay for discharging the first capacitor C1 and the other side connected to a relay for discharging the second capacitor C2; Transistors Q1 and Q2 for simultaneously driving even-numbered and odd-numbered relays of the relay unit 100; Drives a discharge relay 130 for simultaneously discharging the transistor Q3 and the first capacitor C1 and the second capacitor C2 which simultaneously drive the first and second measurement relays 110 and 120. It is characterized by the technical features that the transistor Q4 is included.

이하, 상기 도 3 내지 도 6을 참고하여 본 발명의 작용 및 효과를 설명하면 다음과 같다.Hereinafter, the operation and effects of the present invention will be described with reference to FIGS. 3 to 6.

하이브리드 전기자동차에서 배터리시스템의 안전상태 및 배터리의 충 방전 상태를 알기 위해 배터리 블럭(200)의 전압을 측정하는 일은 매우 중요한 기능이며 이를 구현하기 위해 상기와 같은 포토모스 릴레이를 활용한다. In the hybrid electric vehicle, measuring the voltage of the battery block 200 to know the safety state of the battery system and the charge / discharge state of the battery is a very important function and implements the photomoss relay as described above.

도 3에서 홀수번째 배터리전압 측정은 도 4에서 점선으로 표시되었고, 짝수번째 배터리전압 측정은 쇄선으로 표시되었는데 홀수번째와 짝수번째의 전압측정은 독립적으로 시간간격을 두고 동작 할 수 있다. In FIG. 3, the odd-numbered battery voltage measurement is indicated by a dotted line in FIG. 4, and the even-numbered battery voltage measurement is indicated by a dashed line. The odd-numbered and even-numbered voltage measurements may be independently operated at a time interval.

즉, 도 4와 같이 홀수번째 트랜지스터 중 Q1이 ON 구간 동안 배터리 블럭 V1이 축전기 C1에 충전되고 OFF 구간 동안 Q5가 ON 되어 축전기 C1의 전압이 BV1로 출력되고 CPU에 공급되어 AD 컨버터에서 샘플링 된다. That is, as shown in FIG. 4, the battery block V1 is charged to the capacitor C1 during the ON period of the odd-numbered transistors, and Q5 is turned on during the OFF period, and the voltage of the capacitor C1 is outputted to BV1 and supplied to the CPU and sampled by the AD converter.

동시에 짝수번째 트랜지스터 중 Q2가 ON 구간 동안 해당 배터리 블럭 전압 V2가 축전기 C2에 충전되고 Q2가 OFF 구간 동안 Q6이 ON 되어 콘덴서 C2의 양단전압이 BV2로 출력된다. At the same time, the battery block voltage V2 is charged to the capacitor C2 during Q2 of the even-numbered transistors, and Q6 is turned on during Q2 is OFF, and the voltage across the capacitor C2 is output to BV2.

이와 같이, 배터리 블럭의 홀수번과 짝수번이 시간의 간격을 두고 번갈아 가면서 축전기(C1, C2)에 충전되고 각각의 양단전압은 CPU에 공급되어 배터리 시스템의 전압상태를 연속적으로 측정할 수 있다. As described above, the odd and even numbers of the battery block are alternately charged at time intervals, and the capacitors C1 and C2 are charged, and the voltages at both ends thereof are supplied to the CPU to continuously measure the voltage state of the battery system.

도 4와 같은 포토모스 릴레이 타이밍-챠트를 구현하기 위해서는 복잡한 타이밍 제어가 필요한데 이러한 기능을 CPU에서 구현하면 CPU의 부하가 가중되므로 PLD(Programmable Logic Device) 등의 전용 칩을 활용할 수 있다.In order to implement the photomoss relay timing chart as shown in FIG. 4, complicated timing control is required. Implementing such a function in the CPU increases the load on the CPU, thereby enabling the use of a dedicated chip such as a programmable logic device (PLD).

도 5에서 트랜지스터 중 Q1이 ON구간동안 배터리 블록 전압 V1과 V2가 각각 축전기 C1과 C2에 충전되고 Q1이 OFF 구간동안 Q3가 ON이 되어 축전기 C1과 C2의 전압이 BV1와 BV2로 출력되고 CPU에 공급되어 AD 컨버터에서 샘플링된다. CPU에서 샘플링이 완료되면, 트랜지스터 중 Q3가 OFF가 되고 축전기 C1과 C2를 방전하기 위해 트랜지스터 중 Q4가 ON된다. In FIG. 5, the battery block voltages V1 and V2 are charged to the capacitors C1 and C2 during the ON period of the transistor, and Q3 is turned ON during the Q1 OFF period, so that the voltages of the capacitors C1 and C2 are output to the BV1 and BV2 to the CPU. It is supplied and sampled in the AD converter. When sampling is completed in the CPU, Q3 of the transistors is turned off and Q4 of the transistors is turned on to discharge capacitors C1 and C2.

상기의 과정이 배터리 블록 전압을 축전기에 충전하고 CPU에서 샘플링하고 저항으로 방전하는 한 싸이클이고 배터리 블록의 개수에 따라 반복된다. 이러한 과정이 도 6 제어회로의 타이밍 챠트에 명시되어 있다.The above process is one cycle of charging the battery block voltage to the capacitor, sampling it from the CPU, and discharging it with a resistor and repeating according to the number of battery blocks. This process is specified in the timing chart of the FIG. 6 control circuit.

이러한 방법이 성공적으로 적용된다면 종래기술인 도 1의 경우보다 적은 개수의 포토모스 릴레이를 활용하여 빠르게 다수의 배터리 블럭 전압을 측정할 수 있 고, 통상의 ECU 보드에서 사용하는 전원(VCC)이외의 추가 전원이 불필요하며, PLD로 포토모스 릴레이의 타이밍을 제어함으로써 배터리와 ECU 간의 하드웨어와 CPU기반 펌웨어의 부하를 적절히 분배하는 효과가 있어, 보다 안정적인 하이브리드전기자동차 배터리 시스템용 ECU를 구현할 수 있다. 또한 도 5 및 도 6과 같은 본 발명의 다른 실시예는 상기 도 3 및 도 4의 실시예보다 트랜지스터의 개수를 줄이는 효과가 있다.If this method is successfully applied, it is possible to measure a large number of battery block voltages quickly by utilizing a smaller number of photomoss relays than in the case of the prior art FIG. 1, and add other than the power supply (VCC) used in a conventional ECU board. The power supply is unnecessary, and the timing of the photomos relay is controlled by the PLD, thereby effectively distributing the load of hardware and CPU-based firmware between the battery and the ECU, thereby enabling a more stable ECU for a hybrid electric vehicle battery system. In addition, another embodiment of the present invention as shown in Figs. 5 and 6 has an effect of reducing the number of transistors than the embodiment of Figs.

상기 실시예는 본 발명의 기술적 사상을 구체적으로 설명하기 위한 일례로서, 본 발명의 범위는 상기의 도면이나 실시예에 한정되지 않는다.The above embodiment is an example for explaining the technical idea of the present invention in detail, and the scope of the present invention is not limited to the above drawings and embodiments.

이상과 같은 본 발명은 배터리 블럭의 전압을 측정함에 있어서, 적은 개수의 릴레이를 사용하여 보다 빠르게 다수의 배터리 블럭의 전압을 측정할 수 있고, 별도의 추가 전원이 불필요하며, 보다 안정적인 ECU를 구현할 수 있도록 하는 효과가 있는 것이다.In the present invention as described above, in measuring the voltage of the battery block, it is possible to measure the voltage of a plurality of battery blocks faster by using a small number of relays, no additional power supply is required, it is possible to implement a more stable ECU It is effective to ensure that.

Claims (3)

전압값을 측정하고자 하는 배터리 블럭에 각각 병렬로 연결되는 다수개의 릴레이로 이루어지는 릴레이부와;A relay unit comprising a plurality of relays connected in parallel to a battery block to measure a voltage value, respectively; 일측이 상기 릴레이부 중 홀수번째 릴레이와 제1축전기를 통하여 연결되고, 타측이 CPU와 연결되는 제1측정릴레이와;A first measurement relay having one side connected to an odd number relay among the relay units through a first capacitor and the other side connected to a CPU; 일측이 상기 릴레이부 중 짝수번째 릴레이와 제2축전기를 통하여 연결되고, 타측이 CPU와 연결되는 제2측정릴레이와;A second measurement relay having one side connected to an even-numbered relay and a second capacitor among the relay units, and the other side connected to a CPU; 상기 릴레이부의 릴레이와, 상기 제1측정릴레이 및 제2측정릴레이 각각과 연결되는 트랜지스터를 포함하여 구성되는 것을 특징으로 하는 배터리 블럭 전압 측정회로.And a transistor connected to each of the relay unit and the first and second measurement relays. 전압값을 측정하는 배터리 블록에 각각 병렬로 연결되는 다수개의 릴레이로 이루어지는 릴레이부와;A relay unit including a plurality of relays connected in parallel to battery blocks measuring voltage values; 일측이 상기 릴레이부 중 홀수번째 릴레이와 제1축전기를 통하여 연결되고, 타측이 CPU와 연결되는 제1측정릴레이와;A first measurement relay having one side connected to an odd number relay among the relay units through a first capacitor and the other side connected to a CPU; 일측이 상기 릴레이부 중 짝수번째 릴레이와 제2축전기를 통하여 연결되고, 타측이 CPU와 연결되는 제2측정릴레이와;A second measurement relay having one side connected to an even-numbered relay and a second capacitor among the relay units, and the other side connected to a CPU; 일측이 제1축전기를 방전하기 위한 릴레이와 연결되고, 타측이 제2축전기를 방전하기 위한 릴레이와 연결되는 방전용릴레이와;A discharge relay having one side connected to a relay for discharging the first capacitor and the other side connected to a relay for discharging the second capacitor; 상기 릴레이부의 릴레이에서 짝수번째 릴레이와 홀수번째 릴레이를 동시에 구동시키는 트랜지스터 Q1, Q2와, 상기 제1측정릴레이 및 제2측정릴레이를 동시에 구동시키는 트랜지스터 Q3과, 제1축전기 및 제2축전기를 동시에 방전시키는 방전용릴레이를 구동시키는 트랜지스터 Q4를 포함하여 구성되는 것을 특징으로 하는 배터리 블럭 전압 측정회로.Simultaneously discharging the transistors Q1 and Q2 for simultaneously driving the even relay and the odd relay in the relay of the relay unit, the transistor Q3 for simultaneously driving the first measurement relay and the second measurement relay, and the first capacitor and the second capacitor. A battery block voltage measurement circuit comprising a transistor Q4 for driving a discharge relay to be discharged. 제 1항 또는 2항에 있어서, 상기 릴레이는, 포토모스 릴레이를 이용하는 것을 특징으로 하는 배터리 블럭 전압측정회로.The battery block voltage measurement circuit according to claim 1 or 2, wherein the relay uses a photomoss relay.
KR1020050060584A 2005-07-06 2005-07-06 Circuit for measuring voltage of battery block KR100736684B1 (en)

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Publication number Priority date Publication date Assignee Title
KR100756976B1 (en) * 2006-10-31 2007-09-07 주식회사 케피코 Battery voltage measurement circuit and measuring method for battery voltage using the same
KR100897121B1 (en) * 2006-12-14 2009-05-14 현대자동차주식회사 Battery voltage measuring circuit

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JP3544626B2 (en) 1998-12-02 2004-07-21 松下電器産業株式会社 Battery voltage detecting means, battery pack, battery management device, and battery voltage detecting method used therefor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100756976B1 (en) * 2006-10-31 2007-09-07 주식회사 케피코 Battery voltage measurement circuit and measuring method for battery voltage using the same
WO2008054048A1 (en) * 2006-10-31 2008-05-08 Kefico Corporation Circuit for measuring battery voltage and method for battery voltage measurement using the same
US8058877B2 (en) 2006-10-31 2011-11-15 Kefico Corporation Circuit for measuring battery voltage and method for battery voltage measurement using the same
KR100897121B1 (en) * 2006-12-14 2009-05-14 현대자동차주식회사 Battery voltage measuring circuit

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