KR20090039892A - Heater with cathode oxygen depletion fuction for fuel cell vehicle - Google Patents

Heater with cathode oxygen depletion fuction for fuel cell vehicle Download PDF

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KR20090039892A
KR20090039892A KR1020070105369A KR20070105369A KR20090039892A KR 20090039892 A KR20090039892 A KR 20090039892A KR 1020070105369 A KR1020070105369 A KR 1020070105369A KR 20070105369 A KR20070105369 A KR 20070105369A KR 20090039892 A KR20090039892 A KR 20090039892A
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heater
case
fuel cell
cooling water
stack
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KR1020070105369A
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Korean (ko)
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KR100921044B1 (en
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한수동
김학구
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현대자동차주식회사
기아자동차주식회사
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    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04029—Heat exchange using liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04268—Heating of fuel cells during the start-up of the fuel cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)

Abstract

A heater with a cathode oxygen depletion function for fuel cell vehicles is provided to secure lay-out spaces and improve maintainability and cold-startability by controlling multi-level current. A heater with a cathode oxygen depletion function for fuel cell vehicles comprises: a case(14) having a coolant inlet(15) and a coolant outlet(16), which are located on both ends of the case; a start-up heater(10) installed on one side of the case and perpendicular to a progressive direction of coolant; a shut-down heater(11); and heater(12, 13) heating the coolant while installed on the other side of the case in a vertical direction of the coolant moving. The start-up heater and shut-down heater consume residual oxygen inside a stack in order to prevent deterioration of the stack.

Description

연료전지차량용 ＣＯＤ 겸용 가열장치{Heater with Cathode Oxygen Depletion fuction for fuel cell vehicle}Heater with Cathode Oxygen Depletion fuction for fuel cell vehicle}

본 발명은 연료전지자동차에 사용되는 열 및 물관리계(TMS, Thermal Management System)에 관한 것으로서, 더욱 상세하게는 기존의 COD와 연료전지 차량의 냉시동성 확보를 위한 히터를 통합한 새로운 개념의 연료전지차량용 COD 겸용 가열장치에 관한 것이다.The present invention relates to a thermal management system (TMS) used in a fuel cell vehicle, and more particularly, to a fuel cell of a new concept incorporating an existing COD and a heater for securing cold startability of a fuel cell vehicle. It relates to a vehicle COD combined heating device.

환경 친화적인 자동차 개발을 위해 자동차 회사들은 수소 연료전지 자동차에 큰 관심을 갖고 개발하고 있다. 현재 개발되고 있는 수소 연료전지 자동차에는 해결해야 할 문제점들이 많이 남아 있는데, 그 중 가장 시급하고도 어려운 문제가 냉시동성 확보 전략이라 할 수 있다. To develop environmentally friendly automobiles, automakers are developing with great interest in hydrogen fuel cell vehicles. There are many problems to be solved in the hydrogen fuel cell vehicle that is currently being developed, and the most urgent and difficult problem is the strategy to secure cold startability.

기존 연료전지 차량의 냉시동성 확보를 위한 해결책은 RTA(Rapid Thaw Accumulator) 내부의 히터를 이용한 순수의 급속해빙이었다. The solution for securing the cold startability of the existing fuel cell vehicle was rapid thawing of pure water using a heater inside the Rapid Thaw Accumulator (RTA).

그러나 순수를 이용하게 되면 빙점 이하에서는 순수가 결빙을 할 뿐만 아니 라, 냉각수 루프가 복잡해지고 추가적으로 드레인 밸브를 장착해야 하는 등 많은 어려움이 따른다.However, using pure water not only freezes below the freezing point, but also complicates the cooling water loop and requires additional drain valves.

이러한 문제점을 해결하기 위한 한 가지 방안이 스택용 부동액을 냉각수로 사용하며, 빙점 이하의 온도에서 스택의 전력 생성을 원활하게 하기 위해 냉각수 급속 가열을 하는 방법이 있다. One way to solve this problem is to use antifreeze for the stack as the coolant, and to rapidly heat the coolant to smoothly generate power in the stack at a temperature below freezing point.

이를 위해서는 히터를 스택 냉각수 라인에 부착하여야 한다. 또한 연료전지 차량의 스타트업/셧다운(start up/shut down)시 촉매 담지 카본의 부식에 의한 스택의 내구성 저하를 방지하기 위해 COD(Cathode Oxygen Depletion)를 스택 양 단자에 물려 수소와 산소의 반응에 의한 전력생성을 열에너지로 소비하게 된다. To do this, a heater must be attached to the stack coolant line. In order to prevent the durability of the stack due to corrosion of catalyst-carrying carbon during start-up / shut down of fuel cell vehicles, COD (Cathode Oxygen Depletion) is applied to both terminals of the stack to react with hydrogen and oxygen. Power generated by the power consumption as heat energy.

도 1은 기존 COD의 작동원리를 설명하기 위한 도면으로서, VLD100A/VLD100B는 스타트업용 COD이며, VLD110은 셧다운용 COD를 나타낸다. VLD100A와 VLD100B는 한 개의 스택 모듈 끝단에 릴레이와 퓨즈를 통해 연결되어 있으며, VLD110은 두 개의 스택 모듈 끝단에 릴레이 두개와 퓨즈 두개로 연결되어 있다. 1 is a view for explaining the operation principle of the existing COD, VLD100A / VLD100B is a startup COD, VLD110 is a shutdown COD. The VLD100A and VLD100B are connected via relays and fuses at one stack module end, and the VLD110 is connected by two relays and two fuses at the two stack module ends.

차량의 스타트업시에는 VLD100A 와 VLD100B가 스택에 연결되어 스택내부의 잔류 수소를 산소와 반응시켜 열로 소비시켜 주며, 차량의 셧다운시에는 VLD110이 연결되어 스택내부의 잔류수소를 제거한다. When the vehicle is started up, VLD100A and VLD100B are connected to the stack to react the residual hydrogen in the stack with oxygen to consume heat. When the vehicle is shut down, VLD110 is connected to remove residual hydrogen in the stack.

특히, 셧다운시에는 N/C(normal close) 릴레이가 붙어 있어 시동이 완전이 꺼지고 차량이 정차한 경우에도 셧다운용 COD는 항상 스택 양단에 연결되어 있게 된다.In particular, during shutdown, the N / C (normal close) relay is attached so that even when the start is completely turned off and the vehicle is stopped, the shutdown COD is always connected across the stack.

그러나, 종래에는 차량 시동후 빙점이하의 온도에서 스택의 전력 생성을 원 활하게 하기 위한 스택 냉각수를 가열하기 위한 용도로 개발된 히터가 없었으며, 상기 COD는 히터용으로 사용된 것이 아니라, 차량의 스타트업(S/U)시나 셧다운(S/D)시에 스택 내부의 잔여 수소와 산소를 열로 소비시켜 스택의 내구성을 확보하는 장치로 사용되었다.However, conventionally, there has been no heater developed for heating a stack coolant to facilitate power generation of the stack at a temperature below freezing point after starting the vehicle, and the COD is not used for a heater, It was used as a device to ensure the durability of the stack by consuming the remaining hydrogen and oxygen inside the stack as heat during startup (S / U) or shutdown (S / D).

따라서, COD 외에도 차량 시동후 빙점이하의 온도에서 스택의 전력 생성을 원활하게 하기 위해 냉각수를 급속하게 가열할 수 있는 히터가 필요하였고, 냉각수 가열용 히터를 COD와 별도로 구성하는 경우에 차량의 부품원가를 증가시키고, 레이아웃 공간을 확보할 수 없는 단점이 있다.Therefore, in addition to the COD, a heater that can heat the coolant rapidly is needed to smoothly generate power of the stack at a temperature below freezing point after starting the vehicle, and when the heater for heating the coolant is configured separately from the COD, There is a disadvantage in that it is possible to increase the layout space and secure the layout space.

또한, S/U COD와 S/D COD는 도 2에 도시한 바와 같이 원통형 케이스(100)의 양단에 설치되고, 케이스(100)의 양단에 냉각수 유입구(101) 및 배출구(102)가 형성되며, 원통형 케이스(100)의 내부직경은 냉각수 유입구(101) 및 배출구(102)보다 상대적으로 커서 냉각수 유입구(101)에서 배출구(102)로 이동하는 동안 급확대 및 급축소 관으로 통과함으로, 이에 따른 유체의 압력강하가 심각하여 펌프에 큰 부하를 주는 문제점이 있다. 미설명부호 103은 S/U COD, 104는 S/D COD이다.In addition, the S / U COD and the S / D COD are installed at both ends of the cylindrical case 100 as shown in FIG. 2, and the coolant inlet 101 and the outlet 102 are formed at both ends of the case 100. , The inner diameter of the cylindrical case 100 is larger than the coolant inlet 101 and the outlet 102 so as to pass through the expansion and contraction pipe while moving from the coolant inlet 101 to the outlet 102, accordingly There is a problem in that the pressure drop of the fluid is serious and gives a large load on the pump. Reference numeral 103 denotes an S / U COD, and 104 denotes an S / D COD.

또한, 종래의 COD는 전장 냉각라인에 부착되어 정비를 위해서는 리프트 없이 정비가 불가능한 단점이 있고, 히터가 공기에 노출될 위험이 있어서 발열부의 손실될 위험이 있다.In addition, the conventional COD is attached to the electric field cooling line has a disadvantage that can not be maintained without a lift for maintenance, there is a risk that the heater is exposed to air there is a risk of loss of the heat generating.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로서, 연료전지차량의 냉시동성 확보를 위한 히터기능과 기존의 스택 내구성 확보를 위한 COD 기능을 하나로 통합함으로써, 차량의 부품 원가절감, 레이아웃 공간 확보 및 정비성을 향상시키는 데 기여할 수 있고, 다단 전류 제어를함으로써 냉시동성을 향상시킬 수 있도록 한 연료전지차량용 COD 겸용 가열장치를 제공하는데 그 목적이 있다.The present invention has been made in view of the above, by integrating the heater function for securing the cold startability of the fuel cell vehicle and the COD function for securing the existing stack durability into one, thereby reducing the cost of parts of the vehicle, securing layout space and It is an object of the present invention to provide a COD combined heating device for fuel cell vehicles that can contribute to improving maintainability and improves cold startability by performing multi-stage current control.

상기한 목적을 달성하기 위한 본 발명은 연료전지차량용 COD 겸용 가열장치에 있어서,The present invention for achieving the above object in the COD combined heating device for a fuel cell vehicle,

양단에 냉각수 유입구 및 배출구가 형성된 케이스; 상기 케이스의 일측면에 냉각수의 진행방향에 대해 수직한 방향으로 평행하게 설치된 스타트업 히터 및 셧다운 히터; 상기 케이스의 타측면에 냉각수의 진행방향에 대해 수직한 방향으로 평행하게 설치된 냉각수 가열용 히터;를 포함하여 구성되고, 상기 스타트업 히터와 셧다운 히터는 스택내부의 잔류산소를 열로 소비하여 스택 내부의 열화를 방지하고, 상기 냉각수 가열용 히터는 스택 냉각수를 급속 가열하여 빙점이하의 온도에서도 연료전지차량의 냉시동성을 확보하며, 상기 스타트업 히터, 셧다운 히터 및 냉각수 가열용 히터는 하나의 케이스를 통해 통합되는 것을 특징으로 한다.A case having coolant inlets and outlets formed at both ends thereof; A startup heater and a shutdown heater installed on one side of the case in parallel to a direction perpendicular to a traveling direction of the coolant; And a heater for heating the cooling water installed on the other side of the case in parallel to a direction perpendicular to the running direction of the cooling water, wherein the start-up heater and the shutdown heater consume heat of residual oxygen in the stack as heat. To prevent deterioration, the coolant heating heater rapidly heats the stack cooling water to secure cold startability of the fuel cell vehicle even at a temperature below freezing point, and the starter heater, the shutdown heater, and the coolant heating heater are provided through one case. It is characterized by being integrated.

바람직한 구현예로서, 상기 스타트업 히터, 셧다운 히터 및 냉각수 가열용 히터는 튜브형태로 냉각수의 흐름방향에 수직방향으로 케이스의 양측면에 설치되되, 상하방향으로 적어도 2열이상이 일정한 간격을 두고 "W" 형태로 설치되는 것을 특징으로 한다.In a preferred embodiment, the start-up heater, the shutdown heater and the heater for heating the coolant are installed on both sides of the case in the form of a tube in a direction perpendicular to the flow direction of the coolant, and at least two rows in the vertical direction at regular intervals "W". "Characterized in that the installation in the form.

더욱 바람직한 구현예로서, 상기 케이스는 단면적이 진행방향으로 갈수록 단면적이 폭방향으로 커지다가 다시 작아지는 육각형 형태이고, 케이스의 중간에서 단면적이 최대가 되고, 냉각수 유입구 및 배출구가 형성된 면에서 최소가 되며, 냉각수의 흐르는 단면적이 점진적으로 커지다가 작아져서 유동에너지 손실을 저감시키는 것을 특징으로 한다.In a more preferred embodiment, the case has a hexagonal shape in which the cross-sectional area increases in the width direction and decreases again as the cross-sectional area increases in the advancing direction, the cross-sectional area is maximized in the middle of the case, and the minimum in terms of the coolant inlet and outlet ports formed. The flow cross-sectional area of the cooling water gradually increases and decreases, thereby reducing the flow energy loss.

또한, 상기 케이스의 유입구 측에는 냉각수의 흐름이 넓게 퍼지도록 가이드판이 설치된 것을 특징으로 한다.In addition, the inlet side of the case is characterized in that the guide plate is installed so that the flow of cooling water wide.

이상에서 본 바와 같이, 본 발명에 따른 연료전지차량용 COD 겸용 가열장치에 의하면, 스타트업 히터와 셧다운 히터로 구성되는 COD 기능의 히터는 스택 내부의 잔류산소를 열로 소비해 줌으로써 스택 열화를 방지할 뿐만 아니라, 스택 냉각수 가열용 히터는 스택 냉각수를 급속하게 가열하여 스택의 전류생성을 원활하게 하여 빙점 이하의 온도에서도 연료전지 차량의 냉시동성을 확보할 수 있게 된다.As described above, according to the COD combined heating device for a fuel cell vehicle according to the present invention, a heater having a COD function composed of a startup heater and a shutdown heater not only prevents stack degradation by consuming residual oxygen in the stack as heat. In addition, the heater for heating the stack cooling water rapidly heats the stack cooling water to smoothly generate current in the stack, thereby securing the cold startability of the fuel cell vehicle even at a temperature below the freezing point.

따라서, 기존의 COD 히터와 스택 냉각수 가열용 히터를 하나의 히터로 통합함으로써, 연료전지 차량의 통합 열관리시스템으로서의 기능을 수행할 수 있다.Accordingly, by integrating the existing COD heater and the stack cooling water heater into one heater, it is possible to perform a function as an integrated thermal management system of the fuel cell vehicle.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참조로 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부한 도 3은 본 발명의 일실시예에 따른 COD 겸용 가열장치를 나타내는 개념도이고, 도 4는 본 발명의 일실시예에 따른 COD 겸용 가열장치의 전기결선도이다.FIG. 3 is a conceptual diagram illustrating a combined COD heating apparatus according to an embodiment of the present invention, and FIG. 4 is an electrical connection diagram of a combined COD heating apparatus according to an embodiment of the present invention.

본 발명은 기존의 스택 내구성 확보를 위한 COD 기능과 냉각시동성을 위한 히터 기능을 통합한 점에 주안점이 있다.The present invention focuses on the integration of the COD function for securing the stack durability and the heater function for cooling startability.

근본적으로 COD와 히터는 모두 저항히터로서, 사용시기와 용도만 다를 뿐이고, 하나의 히터로 통합가능하다.Fundamentally, both COD and heater are resistance heaters. They differ only in the timing and purpose of use, and can be integrated into one heater.

본 발명의 일실시예는 도 1에 도시한 바와 같이 크게 스택 내구성 확보를 위한 COD 기능의 히터(10,11)와, 냉시동성 확보를 위한 스택 냉각수 급속 가열용 히터(12,13)로 구성된다.As shown in FIG. 1, an embodiment of the present invention includes a heater 10 and 11 having a COD function for securing stack durability, and a heater 12 and 13 for rapid heating of stack cooling water for securing cold startability. .

상기 COD 기능의 히터(10,11)는 스타트업 히터(10)와 셧다운 히터(11)로 구분할 수 있고, 스타트업 히터(10)는 차량의 시동시 스택의 전류를 소모시킴으로써, 셧다운 히터(11)는 차량의 셧다운시에 스택의 전류를 소모시킴으로써, 스택의 내구성을 확보한다.The heaters 10 and 11 of the COD function may be divided into a startup heater 10 and a shutdown heater 11, and the startup heater 10 consumes a current of the stack when the vehicle starts up, thereby shutting down the heater 11. ) Consumes the current in the stack at shutdown of the vehicle, thereby ensuring durability of the stack.

상기 급속 가열용 히터(12,13)는 차량 시동후 스택 냉각수를 급속 가열하여 빙점 이하의 온도에서도 연료전지 차량의 냉시동성을 확보할 수 있다.The rapid heating heaters 12 and 13 rapidly heat the stack cooling water after the vehicle starts to secure cold startability of the fuel cell vehicle even at a temperature below the freezing point.

즉, 하나의 단품에 세가지 기능의 히터를 구현함으로써, 원가절감, 중량절감 및 냉시동성의 확보 등 많은 이점을 갖게 된다.That is, by implementing a heater of three functions in a single unit, there are many advantages, such as cost reduction, weight reduction and securing cold startability.

도 2는 COD 겸용 히터의 내부 전기 결선도를 나타내는 도면으로서, 스택 출력을 고려하여 스타트업(S/U), 셧다운(S/D), 워밍업(W/U) 히터의 개별 저항값은 1.25Ω, 44Ω, 38Ω으로 한다. 2 is a diagram illustrating an internal electrical connection diagram of a combined COD heater, wherein the individual resistance values of the start-up (S / U), shutdown (S / D), and warm-up (W / U) heaters are 1.25 Ω in consideration of the stack output. Let it be 44Ω and 38Ω.

각 히터의 정격 발열량은 S/U(10), S/D(11), W/U#1(12), W/U#2(13) 각각 4kW, 16kW, 9.6kW, 9.6kW이며, 차량의 S/U시에는 S/U히터(10) 4kW가 발열되며, S/D시에는 S/D히터(11) 16kW가 발열되어 COD기능을 수행한다. The rated calorific value of each heater is 4kW, 16kW, 9.6kW, 9.6kW for S / U (10), S / D (11), W / U # 1 (12) and W / U # 2 (13), respectively. At S / U, 4 kW of the S / U heater 10 is heated, and 16 kW of the S / D heater 11 is heated at the time of S / D to perform a COD function.

W/U시에는 전류 다단제어를 할 수 있으며, S/D히터(11)와 W/U#1히터(12)를 함께 켜면 25.6kW(=16+9.6), S/D히터와 W/U#1, 2(12,13)를 모두 켜면 35.2kW가 발열되어 스택냉각수를 급속 가열할 수 있어 스택의 냉시동성을 확보할 수 있게 된다. 각각의 히터군들은 릴레이와 퓨즈로 온/오프 제어를 할 수 있다. 이때, S/D 히터는 필요에 따라 W/U 히터로도 사용할 수 있다.In case of W / U, current multi-stage control can be performed.If S / D heater 11 and W / U # 1 heater 12 are turned on together, 25.6kW (= 16 + 9.6), S / D heater and W / U If # 1, 2 (12, 13) is turned on, 35.2kW is generated to rapidly heat the stack cooling water, thereby securing the cold startability of the stack. Each heater group can control on / off with relay and fuse. In this case, the S / D heater may also be used as a W / U heater as necessary.

따라서, S/U히터(10)와 S/D히터(11)로 구성되는 COD기능의 히터는 스택내부의 잔류산소를 열로 소비해 줌으로써 스택 열화를 방지하는 역할을 하고, W/U히터(12,13)는 스택 냉각수를 급속 가열하여 스택의 전류 생성을 원활하게 하여 빙점이하의 온도에서도 연료전지 차량의 냉시동성을 확보하게 해 준다. Therefore, the heater having the COD function composed of the S / U heater 10 and the S / D heater 11 serves to prevent stack deterioration by consuming residual oxygen in the stack as heat, and the W / U heater 12 And (13) rapidly heat the stack cooling water to facilitate the generation of current in the stack, thereby ensuring cold startability of the fuel cell vehicle even at temperatures below freezing point.

나아가, 기존의 COD 히터와 스택 냉각수 가열용 히터를 하나의 히터로 통합함으로써 연료전지 차량의 통합 열관리 시스템으로서의 기능을 수행할 수 있다.Furthermore, by integrating the existing COD heater and the stack cooling water heater into a single heater, it is possible to perform a function as an integrated thermal management system of the fuel cell vehicle.

상기 S/U히터(10), S/D히터(11)는 육각형의 케이스(14)의 일측면에 평행하게 장착되며, 케이스(14)의 양단부에는 냉각수 유입구(15)와 배출구(16)가 형성되며, 유입구(15)를 통해 유입된 냉각수는 스택의 양단자에 맞물려 있는 S/U히터(10)와 S/D히터(11)에 의해 가열된다.The S / U heater 10 and the S / D heater 11 are mounted on one side of the hexagonal case 14 in parallel, and both ends of the case 14 have a cooling water inlet 15 and an outlet 16. The cooling water introduced through the inlet 15 is heated by the S / U heater 10 and the S / D heater 11 engaged with both terminals of the stack.

상기 스택 냉각수 가열용 히터(12,13)는 육각형 케이스(14)의 타측면에 평행하게 장착되며, 유입구(15)를 통해 유입된 냉각수는 스택의 양단자에 맞물려 있는 스택 냉각수 가열용 히터(12,13)에 의해 가열되게 된다.The stack cooling water heaters 12 and 13 are mounted in parallel to the other side of the hexagonal case 14, and the cooling water introduced through the inlet 15 is coupled to both ends of the stack. And 13).

상기 S/U히터(10), S/D히터(11) 및 스택 냉각수 가열용 히터(12,13)는 튜브형태로 상단부가 케이스(14)의 측면을 관통하고, 냉각수의 진행방향에 대해 수직한 방향으로 설치되어 있다. 또한, 케이스(14)의 유입구 측에는 냉각수가 케이스(14) 내부로 골고루 퍼지도록 내부에 가이드판(17)이 설치되어 있다.The S / U heater 10, the S / D heater 11, and the stack coolant heating heaters 12 and 13 have a tube shape, the upper end of which penetrates the side surface of the case 14, and is perpendicular to the traveling direction of the coolant. It is installed in one direction. In addition, the guide plate 17 is provided inside the case 14 so that the cooling water is evenly spread inside the case 14.

또한, 상기 S/U히터(10), S/D히터(11) 및 스택 냉각수 가열용 히터(12,13)는 항상 냉각수에 잠겨 있으므로, 발열부에서 열이 손실될 염려가 없으며, 본 발명의 COD 겸용 가열장치는 스택 후면에 장착되어 정비가 용이하다.In addition, since the S / U heater 10, the S / D heater 11 and the stack cooling water heaters 12 and 13 are always immersed in the cooling water, there is no fear of heat loss in the heat generating unit. The COD combined heater is mounted on the rear of the stack for easy maintenance.

도 5는 본 발명의 일실시예에 따른 COD 겸용 가열장치의 차압실험결과를 나타내는 그래프로서, 냉각수를 0 ~ 200 LPM 범위에서 점진적으로 증가시켰을 경우에 냉각수 유입구 및 배출구의 압력차이 또한 0 ~ 0.13bar의 범위에서 점진적으로 증가하였음을 알 수 있다.Figure 5 is a graph showing the differential pressure test results of the COD combined heating apparatus according to an embodiment of the present invention, the pressure difference between the cooling water inlet and outlet when the cooling water is gradually increased in the range of 0 ~ 200 LPM also 0 ~ 0.13bar It can be seen that gradually increased in the range of.

이상에서는 본 발명을 특정의 바람직한 실시예에 대하여 도시하고 설명하였으나, 본 발명은 이러한 실시예에 한정되지 않으며, 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 특허청구범위에서 청구하는 본 발명의 기술적 사상을 벗어나지 않는 범위내에서 실시할 수 있는 다양한 형태의 실시예들을 모두 포함 한다.While the invention has been shown and described with respect to certain preferred embodiments thereof, the invention is not limited to these embodiments, and has been claimed by those of ordinary skill in the art to which the invention pertains. It includes all the various forms of embodiments that can be implemented without departing from the spirit.

도 1은 종래의 COD의 작동원리를 설명하기 위한 도면이고,1 is a view for explaining the principle of operation of the conventional COD,

도 2는 종래의 COD 형상을 나타내는 구성도이고,2 is a configuration diagram showing a conventional COD shape,

도 3은 본 발명의 일실시예에 따른 COD 겸용 가열장치를 나타내는 개념도이고,3 is a conceptual diagram showing a combined COD heating apparatus according to an embodiment of the present invention,

도 4는 본 발명의 일실시예에 따른 COD 겸용 가열장치의 전기결선도이고,4 is an electrical connection diagram of a combined COD heating apparatus according to an embodiment of the present invention,

도 5는 본 발명의 일실시예에 따른 COD 겸용 가열장치의 차압실험 결과를 나타내는 그래프이다.Figure 5 is a graph showing the differential pressure test results of the COD combined heating apparatus according to an embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 스타트업 히터 11 : 셧 다운히터10: startup heater 11: shut down heater

12,13 : 냉각수 가열용 히터 14 : 케이스12,13: cooling water heater 14: case

15 : 유입구 16 : 배출구15 inlet port 16 outlet port

17 : 가이드판17: guide plate

Claims (4)

연료전지차량용 COD 겸용 가열장치에 있어서,In the COD combined heating device for fuel cell vehicles, 양단에 냉각수 유입구 및 배출구가 형성된 케이스;A case having coolant inlets and outlets formed at both ends thereof; 상기 케이스의 일측면에 냉각수의 진행방향에 대해 수직한 방향으로 평행하게 설치된 스타트업 히터 및 셧다운 히터;A startup heater and a shutdown heater installed on one side of the case in parallel to a direction perpendicular to a traveling direction of the coolant; 상기 케이스의 타측면에 냉각수의 진행방향에 대해 수직한 방향으로 평행하게 설치된 냉각수 가열용 히터;A heater for heating the cooling water installed on the other side of the case in parallel to the direction perpendicular to the traveling direction of the cooling water; 를 포함하여 구성되고, 상기 스타트업 히터와 셧다운 히터는 스택내부의 잔류산소를 열로 소비하여 스택 내부의 열화를 방지하고, 상기 냉각수 가열용 히터는 스택 냉각수를 급속 가열하여 빙점이하의 온도에서도 연료전지차량의 냉시동성을 확보하며, 상기 스타트업 히터, 셧다운 히터 및 냉각수 가열용 히터는 하나의 케이스를 통해 통합되는 것을 특징으로 하는 연료전지차량용 COD 겸용 가열장치.The start-up heater and the shutdown heater are configured to consume residual oxygen inside the stack as heat to prevent deterioration of the stack. The heater for heating the cooling water rapidly heats up the stack cooling water so that the fuel cell even at a temperature below freezing point. A cold start-up of the vehicle, the starter heater, the shutdown heater and the cooling water heater for heating the combined fuel cell vehicle COD combined device, characterized in that integrated through one case. 청구항 1에 있어서,The method according to claim 1, 상기 스타트업 히터, 셧다운 히터 및 냉각수 가열용 히터는 튜브형태로 냉각수의 흐름방향에 수직방향으로 케이스의 양측면에 설치되되, 상하방향으로 적어도 2열이상이 일정한 간격을 두고 "W" 형태로 설치되는 것을 특징으로 하는 연료전지차량용 COD 겸용 가열장치.The start-up heater, the shutdown heater and the heater for heating the cooling water are installed on both sides of the case in the form of a tube in a direction perpendicular to the flow direction of the cooling water, and at least two rows in the vertical direction are installed in a "W" shape at regular intervals. COD combined heating device for a fuel cell vehicle, characterized in that. 청구항 2에 있어서,The method according to claim 2, 상기 케이스는 단면적이 진행방향으로 갈수록 단면적이 폭방향으로 커지다가 다시 작아지는 육각형 형태이고, 케이스의 중간에서 단면적이 최대가 되고, 냉각수 유입구 및 배출구가 형성된 면에서 최소가 되며, 냉각수의 흐르는 단면적이 점진적으로 커지다가 작아져서 유동에너지 손실을 저감시키는 것을 특징으로 하는 연료전지차량용 COD 겸용 가열장치.The case has a hexagonal shape in which the cross-sectional area becomes larger in the width direction as the cross-sectional area increases in the advancing direction, and becomes smaller again. The cross-sectional area is maximized in the middle of the case, and is minimized at the surface where the coolant inlet and outlet ports are formed. A COD combined heating device for a fuel cell vehicle, characterized by gradually increasing and decreasing to reduce flow energy loss. 청구항 3에 있어서,The method according to claim 3, 상기 케이스의 유입구 측에는 냉각수의 흐름이 넓게 퍼지도록 가이드판이 설치된 것을 특징으로 하는 연료전지차량용 COD 겸용 가열장치.COD combined heating device for a fuel cell vehicle, characterized in that the guide plate is installed on the inlet side of the case so that the flow of cooling water is wide spread.
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KR101030829B1 (en) * 2009-07-31 2011-04-22 갑을오토텍(주) COD Heater For Car
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KR20150033288A (en) 2013-09-24 2015-04-01 한라비스테온공조 주식회사 COD heater
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KR101030829B1 (en) * 2009-07-31 2011-04-22 갑을오토텍(주) COD Heater For Car
KR101385209B1 (en) * 2011-08-29 2014-04-14 한라비스테온공조 주식회사 Cathode Oxygen Depletion for fuel cell vehicle
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KR20160008409A (en) 2014-07-14 2016-01-22 한온시스템 주식회사 COD heater
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