KR101071939B1 - Apparatus for measuring high voltage of fuel cell stack using isolated capacitor - Google Patents

Apparatus for measuring high voltage of fuel cell stack using isolated capacitor Download PDF

Info

Publication number
KR101071939B1
KR101071939B1 KR1020090115982A KR20090115982A KR101071939B1 KR 101071939 B1 KR101071939 B1 KR 101071939B1 KR 1020090115982 A KR1020090115982 A KR 1020090115982A KR 20090115982 A KR20090115982 A KR 20090115982A KR 101071939 B1 KR101071939 B1 KR 101071939B1
Authority
KR
South Korea
Prior art keywords
switch
voltage
fuel cell
cell stack
high voltage
Prior art date
Application number
KR1020090115982A
Other languages
Korean (ko)
Other versions
KR20110059297A (en
Inventor
정재욱
박현석
전윤석
Original Assignee
주식회사 케피코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 케피코 filed Critical 주식회사 케피코
Priority to KR1020090115982A priority Critical patent/KR101071939B1/en
Publication of KR20110059297A publication Critical patent/KR20110059297A/en
Application granted granted Critical
Publication of KR101071939B1 publication Critical patent/KR101071939B1/en

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/3644—Constructional arrangements
    • G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • 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)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)

Abstract

본 발명의 연료전지 스택의 고전압 측정 장치는, 전지 단위체의 복수의 셀 양단간에 설치된 분압저항; 분압저항과 CPU 사이의 전원 경로에 상호 이격되게 연결된 제1스위치 및 제2스위치; 및 제1스위치 및 제2스위치 사이에서 복수의 셀 양단에 접속된 캐패시터를 포함한다. 본 발명에 의하면, 하나의 전원으로 스위치를 구동시키므로 회로의 구성이 간단해지고, 스위치로 전원을 분리함으로써 절연 IC로 전원을 분리하는 종래의 IC 적용 회로보다 전원 분리가 확실해지는 효과가 있다.       An apparatus for measuring a high voltage of a fuel cell stack of the present invention includes a voltage divider provided between both ends of a plurality of cells of a battery unit; A first switch and a second switch connected to the power supply path between the voltage divider and the CPU; And a capacitor connected between the first switch and the second switch across the plurality of cells. According to the present invention, since the switch is driven by one power source, the circuit configuration can be simplified, and power separation can be more secured than conventional IC application circuits in which power is separated by an isolation IC.

절연, 캐패시터, 연료전지, 스택, 고전압, 측정, 분압, 스위치 Insulation, Capacitor, Fuel Cell, Stacked, High Voltage, Measurement, Voltage Dividing, Switch

Description

절연 캐패시터를 이용한 연료전지 스택의 고전압 측정장치{Apparatus for measuring high voltage of fuel cell stack using isolated capacitor}       Apparatus for measuring high voltage of fuel cell stack using isolated capacitor}

본 발명은 연료전지 스택의 고전압 측정장치에 관한 것이다. 보다 상세하게는, 절연 캐패시터를 이용한 연료전지 스택의 고전압 측정장치에 관한 것이다.       The present invention relates to a high voltage measuring apparatus of a fuel cell stack. More specifically, the present invention relates to a high voltage measuring apparatus for a fuel cell stack using an insulated capacitor.

연료전지(fuel cell)는 고효율의 청정에너지원으로서 점차 그 사용영역이 확대되어 가고 있으며, 여러 종류의 연료전지 중에서 특히 고분자 전해질(막)형 연료전지(PEMFC ; Polymer Electrolyte Membrane Fuel Cell}는 타 연료전지에 비하여 비교적 낮은 온도에서 작동하고 빠른 시동 및 응답 특성을 가지고 있어, 자동차용 이동 전원으로서 활발하게 개발되고 있다.       Fuel cells are a high-efficiency clean energy source, and their range of use is gradually expanding, and among other fuel cells, polymer electrolyte membrane fuel cells (PEMFC) are particularly useful. Compared to batteries, they operate at a relatively low temperature and have fast starting and response characteristics, and are being actively developed as mobile power sources for automobiles.

연료전지는 연료가 가지고 있는 에너지를 화학반응에 의해 직접 전기에너지로 변환하는 발전 시스템이다. 예를 들면, 연료전지는 수소와 산소로부터 물이 생성되는 반응, 즉 수소의 연소 반응을 이용해 전기 에너지를 얻는다. 이러한 연료전지는 여러 개의 연료전지 셀을 적층하여 스택으로 제작되는데, 연료전지 스택이 정상적인 발전을 하지 않는 경우 스택의 고장 확산 및 영구적인 손상을 줄 수 있다. 따라서, 고장 초기에 이를 진단하여 연료전지의 운전을 정지시켜야 하며, 이에 스 택의 전압을 측정하여 고장 유무를 판단하는 장치가 필요하다.       A fuel cell is a power generation system that converts energy contained in a fuel into electrical energy directly by chemical reaction. For example, a fuel cell obtains electrical energy using a reaction in which water is produced from hydrogen and oxygen, that is, a combustion reaction of hydrogen. Such a fuel cell is manufactured by stacking a plurality of fuel cell cells. If the fuel cell stack does not generate power normally, the fuel cell stack may spread and fail permanently. Therefore, it is necessary to stop the operation of the fuel cell by diagnosing it at the initial stage of the failure, and thus, a device for determining whether there is a failure by measuring the voltage of the stack is required.

한편, 차량에 적용되는 연료전지 스택의 전압은 대체로 300~400V 사이의 전압을 발생시킨다. 이러한 고전압을 측정하기 위해서 종래에는 절연 IC를 사용하였다.       On the other hand, the voltage of the fuel cell stack applied to the vehicle generally generates a voltage between 300 ~ 400V. In order to measure such a high voltage, an isolation IC is conventionally used.

도 1은 종래 연료전지 스택의 고전압 측정 장치의 회로도이다.1 is a circuit diagram of a high voltage measuring apparatus of a conventional fuel cell stack.

도 1을 참조하면, 분압 저항(R1, R2)을 통하여 분압된 전압이 절연 IC를 통해서 센싱된다. 이러한 절연 IC는 따로 분리된 전원을 두 군데(Vcc1, Vcc2)에서 받아야 하기 때문에 전원 소스회로가 두 개가 필요하다. 하지만, 이는 고전압 측과 저전압 측의 전원분리, 즉, 두 개의 전원 소스를 생성하여야 하는 복잡함이 있고, 절연 IC 가 파괴될 시에 고전압 측과 통전되는 위험이 존재한다.Referring to FIG. 1, the voltage divided by the divided resistors R1 and R2 is sensed through the isolation IC. Since these isolated ICs must receive two separate power supplies (Vcc1 and Vcc2), two power source circuits are required. However, this has the complexity of generating a power supply on the high voltage side and the low voltage side, that is, two power sources, and there is a risk of energizing the high voltage side when the isolation IC is destroyed.

본 발명은 상술한 문제점을 해결하고자 안출된 것으로서, 기존 절연 IC를 사용하지 않고, 분압 저항, 스위칭 소자, 및 캐패시터를 이용하여 회로의 구성을 단순화하고, 전원 분리가 확실한 연료전지 스택의 고전압 측정 장치를 제공하는 것을 목적으로 한다.    SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and does not use an existing isolation IC, but uses a voltage divider, a switching element, and a capacitor to simplify the circuit configuration and to ensure power separation. The purpose is to provide.

　　　　

상기한 목적으로 달성하기 위한 본 발명의 실시예에 따른 연료전지 스택의 고전압 측정 장치는, 전지 단위체의 복수의 셀 양단간에 설치된 분압저항; 분압저항과 CPU 사이의 전원 경로에 상호 이격되게 연결된 제1스위치 및 제2스위치; 및 제1스위치 및 제2스위치 사이에서 복수의 셀 양단에 접속된 캐패시터를 포함한다.    An apparatus for measuring a high voltage of a fuel cell stack according to an exemplary embodiment of the present invention for achieving the above object includes a voltage divider provided between both ends of a plurality of cells of a battery unit; A first switch and a second switch connected to the power supply path between the voltage divider and the CPU; And a capacitor connected between the first switch and the second switch across the plurality of cells.

제1스위치 및 제2스위치는 CPU의 제어신호에 의해 상호 반대로 온/오프 되는 것이 바람직하다.      Preferably, the first switch and the second switch are turned on / off in opposite directions by the control signal of the CPU.

제1스위치 및 제2스위치는 각각 릴레이로 구성되는 것이 바람직하다.Preferably, the first switch and the second switch are each configured of a relay.

캐패시터는 제1스위치가 온되고 상기 제2스위치가 오프됨에 따라 상기 전원 경로를 통한 인가전압을 충전하는 것이 바람직하다.The capacitor may be charged with an applied voltage through the power path as the first switch is turned on and the second switch is turned off.

캐패시터는 제1스위치가 오프되고 상기 제2스위치가 온됨에 따라 방전전압을 CPU측으로 보내는 것이 바람직하다.    The capacitor preferably sends a discharge voltage to the CPU side as the first switch is turned off and the second switch is turned on.

본 발명에 의하면, 하나의 전원으로 스위치를 구동시키므로 회로의 구성이 간단해지고, 스위치로 전원을 분리함으로써 절연 IC로 전원을 분리하는 종래의 IC 적용 회로보다 전원 분리가 확실해지는 효과가 있다.   According to the present invention, since the switch is driven by one power source, the circuit configuration can be simplified, and power separation can be more secured than conventional IC application circuits in which power is separated by an isolation IC.

이하, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명의 기술적 사상을 용이하게 실시할 수 있을 정도로 상세히 설명하기 위하여, 본 발명의 가장 바람직한 실시예를 도면을 참조하여 설명하기로 한다. 우선 각 도면의 구 성요소들에 참조부호를 부가함에 있어서, 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 부호를 가지도록 한다. 또한, 본 발명을 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다.   Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention. First, in adding reference numerals to the components of each drawing, the same components have the same reference numerals as much as possible even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

　　　　

도 2는 본 발명에 따른 연료전지 스택의 고전압 측정 장치의 회로도이다.      2 is a circuit diagram of a high voltage measuring apparatus of a fuel cell stack according to the present invention.

도 2를 참조하면, 먼저, 고전압 측정의 대상인 전지 단위체(10)는 최상위 셀(Cell)의 전압과 최하위 셀(Cell) 전압을 각각 개별적으로 발생하는 다수의 단위 전지로 구성된다. 전지 단위체(10)를 연료전지 스택으로 보면 된다.Referring to FIG. 2, first, the battery unit 10, which is the target of high voltage measurement, is composed of a plurality of unit cells that individually generate voltages of the highest cell and the lowest cell. The battery unit 10 may be viewed as a fuel cell stack.

전압 레귤레이터(20)는 소정의 기준 전압(예컨대, 5V)을 발생하며, 스위치(SW1,SW2)를 제어하기 위한 전원 소스를 CPU(30)에 공급한다.The voltage regulator 20 generates a predetermined reference voltage (for example, 5V), and supplies a power source for controlling the switches SW1 and SW2 to the CPU 30.

CPU(30)는 캐패시터(C1)에 충전된 전압 값을 센싱하여 전지 단위체(10)의 전압을 측정한다.The CPU 30 senses the voltage value charged in the capacitor C1 to measure the voltage of the battery unit 10.

보다 상세하게는, CPU(30)는 먼저, 전지 단위체(10) 측에 연결된 제1스위치(SW1)를 온(ON) 시켜서, 분압저항(R1,R2)을 통해 인가되는 전압이 캐패시터(C1)에 충전되도록 한다.More specifically, the CPU 30 first turns on the first switch SW1 connected to the battery unit 10 side, so that the voltage applied through the voltage dividing resistors R1 and R2 is applied to the capacitor C1. To be charged.

그리고, 캐패시터에(C1)에 분압저항(R1,R2)을 통해 인가된 전압이 충전되면, 전지 단위체(10) 측 제1스위치(SW1)를 오프(OFF)하고, 확실한 전원 분리를 위해 일정 시간(예컨대, 1ms정도) 지연 후 CPU측 제2스위치(SW2)를 온 시킨다. 마지막으로 CPU(30)는 캐패시터(C1)에 충전된 값을 센싱하여 전지 단위체(10)의 전압 값을 측정한다.When the capacitor C1 is charged with the voltage applied through the voltage divider R1 and R2, the first switch SW1 of the battery unit 10 side is turned off, and a predetermined time is required for reliable power separation. After the delay (for example, about 1 ms), the second switch SW2 on the CPU side is turned on. Finally, the CPU 30 senses the value charged in the capacitor C1 to measure the voltage value of the battery unit 10.

분압저항(R1,R2)을 통하여 분압된 전압은 제1스위치(SW1)가 온 되면서 캐패시터(C1)에 충전이 된다. 이 후 제1스위치(SW1)이 오프되고 제2스위치(SW2)가 온 되면서 캐패시터(C1)에 충전된 전압이 CPU(30)에 전달되며, 이때 CPU(30)에서 제1스위치(SW1) 및 제2스위치(SW2)를 제어하기 위해 필요한 전원은 전압 레귤레이터(20)로부터 공급받는다.The voltage divided by the voltage dividing resistors R1 and R2 is charged to the capacitor C1 while the first switch SW1 is turned on. After that, as the first switch SW1 is turned off and the second switch SW2 is turned on, the voltage charged in the capacitor C1 is transferred to the CPU 30, at which time the first switch SW1 and the first switch SW1 and the first switch SW1 are turned off. Power required to control the second switch SW2 is supplied from the voltage regulator 20.

상기한 바에 따르면, 하나의 전원으로 스위치를 구동시키기 때문에 회로의 구성이 간단해질 뿐만 아니라, 스위치로 전원을 분리함으로써 절연 IC로 전원을 분리하는 종래의 IC 적용 회로보다 전원 분리가 확실해지는 효과가 있다.According to the above, since the switch is driven by one power source, not only the circuit configuration is simplified, but also the power separation is more secured than the conventional IC application circuit which separates the power source by the isolation IC by separating the power source by the switch. .

이상에서 본 발명에 따른 바람직한 실시예에 대해 설명하였으나, 다양한 형태로 변형이 가능하며, 본 기술분야에서 통상의 지식을 가진자라면 본 발명의 특허청구범위를 벗어남이 없이 다양한 변형예 및 수정예를 실시할 수 있을 것으로 이해된다.While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It will be understood that the invention may be practiced.

도 1은 종래 연료전지 스택의 고전압 측정 장치의 회로도이다.1 is a circuit diagram of a high voltage measuring apparatus of a conventional fuel cell stack.

도 2는 본 발명에 따른 연료전지 스택의 고전압 측정 장치의 회로도이다.2 is a circuit diagram of a high voltage measuring apparatus of a fuel cell stack according to the present invention.

Claims (5)

전지 단위체의 복수의 셀 양단간에 설치된 분압저항;A voltage divider resistor disposed between both ends of the plurality of cells of the battery unit; 상기 분압저항과 CPU 사이의 전원 경로에 상호 이격되게 연결된 제1스위치 및 제2스위치; 및A first switch and a second switch connected to the power supply path between the voltage divider and the CPU; And 상기 제1스위치 및 제2스위치 사이에서 상기 복수의 셀 양단에 접속된 캐패시터를 포함하고,    A capacitor connected between the first switch and the second switch across the plurality of cells; 상기 캐패시터는 상기 분압저항을 통해 인가된 전압이 충전되면 상기 전지 단위체 측의 상기 제1 스위치를 오프하고, 일정 시간 후에 상기 제2스위치가 온됨에 따라 방전전압을 상기 CPU측으로 보내고, The capacitor turns off the first switch on the battery unit side when the voltage applied through the voltage divider is charged, and sends a discharge voltage to the CPU side as the second switch is turned on after a predetermined time. 상기 CPU는 상기 캐패시터에 충전된 전압 값을 센싱하여 상기 전지 단위체의 전압을 측정하는 것을 특징으로 하는 연료전지 스택의 고전압 측정 장치.The CPU measures a voltage value charged in the capacitor to measure the voltage of the battery unit, characterized in that the high voltage measuring device of the fuel cell stack. 　　　　 청구항 1에 있어서,      The method according to claim 1, 상기 제1스위치 및 제2스위치는 상기 CPU의 제어신호에 의해 상호 반대로 온/오프되는 것을 특징으로 하는 연료전지 스택의 고전압 측정 장치.    The first switch and the second switch is a high voltage measuring device of the fuel cell stack, characterized in that on / off opposite to each other by the control signal of the CPU. 　　　　 청구항 1 또는 청구항 2에 있어서,      The method according to claim 1 or 2, 상기 제1스위치 및 제2스위치는 각각 릴레이로 구성된 것을 특징으로 하는연료전지 스택의 고전압 측정 장치. The first switch and the second switch is a high voltage measuring device of the fuel cell stack, characterized in that each configured as a relay. 　　　　 청구항 1에 있어서,      The method according to claim 1, 상기 캐패시터는 상기 제1스위치가 온되고 상기 제2스위치가 오프됨에 따라 상기 전원 경로를 통한 인가전압을 충전하는 것을 특징으로 하는 연료전지 스택의 고전압 측정 장치.    And the capacitor charges an applied voltage through the power path as the first switch is turned on and the second switch is turned off. 삭제delete
KR1020090115982A 2009-11-27 2009-11-27 Apparatus for measuring high voltage of fuel cell stack using isolated capacitor KR101071939B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090115982A KR101071939B1 (en) 2009-11-27 2009-11-27 Apparatus for measuring high voltage of fuel cell stack using isolated capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090115982A KR101071939B1 (en) 2009-11-27 2009-11-27 Apparatus for measuring high voltage of fuel cell stack using isolated capacitor

Publications (2)

Publication Number Publication Date
KR20110059297A KR20110059297A (en) 2011-06-02
KR101071939B1 true KR101071939B1 (en) 2011-10-10

Family

ID=44394459

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090115982A KR101071939B1 (en) 2009-11-27 2009-11-27 Apparatus for measuring high voltage of fuel cell stack using isolated capacitor

Country Status (1)

Country Link
KR (1) KR101071939B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013089518A1 (en) * 2011-12-16 2013-06-20 (주)브이이엔에스 High voltage measuring apparatus for electric vehicle
WO2018143543A1 (en) * 2017-02-01 2018-08-09 삼성에스디아이 주식회사 High-voltage measurement circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106324319A (en) * 2016-08-02 2017-01-11 许继集团有限公司 Direct current voltage and direct current signal sampling circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013089518A1 (en) * 2011-12-16 2013-06-20 (주)브이이엔에스 High voltage measuring apparatus for electric vehicle
WO2018143543A1 (en) * 2017-02-01 2018-08-09 삼성에스디아이 주식회사 High-voltage measurement circuit
KR20180089820A (en) * 2017-02-01 2018-08-09 삼성에스디아이 주식회사 High voltage detecting circuit
KR102235280B1 (en) 2017-02-01 2021-04-01 삼성에스디아이 주식회사 High voltage detecting circuit

Also Published As

Publication number Publication date
KR20110059297A (en) 2011-06-02

Similar Documents

Publication Publication Date Title
US10670637B2 (en) Current measuring circuit, battery and motor vehicle
US9825487B2 (en) Apparatus and electric power control method
US10663506B2 (en) System for diagnosing fault of relays for vehicle
US10222423B2 (en) Electrical storage system
US9130381B2 (en) Systems and methods for identifying and monitoring a battery charger
US20150008872A1 (en) Autonomous Power Supply System
WO2009014407A2 (en) Apparatus and method for balancing of battery cell's charge capacity
CN108028536B (en) Battery monitoring device
US8428896B2 (en) Malfunction detecting apparatus
JP2000088898A (en) Detecting device for battery voltage
JP2007174894A (en) Battery management system, battery management method, battery system, and automobile
CN102955552A (en) Controller, battery management systems and method for controlling battery management systems
JP2009286292A (en) Vehicular power supply device
JP7156175B2 (en) DCDC converter control device and DCDC converter
WO2012005186A1 (en) Voltage measuring circuit and method
JP2012208067A (en) Battery voltage detection device
KR101985761B1 (en) Battery management sytem
KR101071939B1 (en) Apparatus for measuring high voltage of fuel cell stack using isolated capacitor
JP2011253721A (en) Voltage monitor device
US8711534B2 (en) Battery power management system and method
KR102005397B1 (en) Apparatus for diagnosing high voltage secondary battery fuse
KR20230009230A (en) Battery management system, battery pack, electric vehicle, and battery management method
KR102224137B1 (en) Device and method for overcharge protection
JP2010038592A (en) Battery pack
US20150301148A1 (en) Method for Checking an Electrical Current Measurement, Circuit for Carrying Out the Method, Battery and Motor Vehicle

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant