KR101428103B1 - Apparatus for discharging leakage hydrogen of engine room for full cell bus - Google Patents

Apparatus for discharging leakage hydrogen of engine room for full cell bus Download PDF

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KR101428103B1
KR101428103B1 KR1020080119329A KR20080119329A KR101428103B1 KR 101428103 B1 KR101428103 B1 KR 101428103B1 KR 1020080119329 A KR1020080119329 A KR 1020080119329A KR 20080119329 A KR20080119329 A KR 20080119329A KR 101428103 B1 KR101428103 B1 KR 101428103B1
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engine room
hydrogen
fuel cell
atmosphere
exhaust pipe
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KR20100060647A (en
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김성재
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현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • 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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  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Fuel Cell (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

본 발명은 연료전지버스용 엔진룸의 누설 수소 강제배출장치에 관한 것으로, 다수의 전장품과 연료전지스택(5)이 장착된 엔진룸(4)내에 수소가 누설되면, 누설된 수소를 대기중으로 빠른 시간내에 강제 배출시킬 수 있게 됨으로써, 시스템이 셧다운(shutdown)되기 전 엔진룸(4)에 장착된 전장품에서 스파크(spark) 등이 발생하더라도, 차량의 화재를 예방할 수 있도록 된 것이다.The present invention relates to a leaking hydrogen forced exhaust apparatus for an engine room for a fuel cell bus, in which when leakage of hydrogen occurs in an engine room (4) equipped with a plurality of electrical components and a fuel cell stack (5) It is possible to prevent the vehicle from being fired even if a spark or the like occurs in the electrical equipment mounted in the engine room 4 before the system is shut down.

연료전지버스, 엔진룸, 수소, 누설, 배출 Fuel cell bus, engine room, hydrogen, leakage, exhaust

Description

연료전지버스용 엔진룸의 누설 수소 강제배출장치{Apparatus for discharging leakage hydrogen of engine room for full cell bus}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for discharging leaking hydrogen in an engine room for a fuel cell bus,

본 발명은 연료전지버스의 엔진룸에서 수소가 누설될 경우 누설된 수소를 엔진룸의 밖으로 강제로 배출시킬 수 있도록 하는 장치에 관한 기술이다.The present invention relates to a device capable of forcibly discharging leaked hydrogen out of the engine room when hydrogen is leaked in an engine room of a fuel cell bus.

일반적으로, 연료전지버스는 도 1과 같이 차체의 전방쪽 루프패널(1)상에 다수개의 수소탱크(2)가 고정 설치된 탱크모듈(3)이 장착되고, 차체의 후방쪽 하단 엔진룸(4)에는 연료전지스택(5), 슈퍼캡(super cap), 정션 박스(junction box), 인버터(inverter) 등 다수개의 전장품이 장착되어 있다.In general, the fuel cell bus is equipped with a tank module 3 in which a plurality of hydrogen tanks 2 are fixedly mounted on a roof panel 1 on the front side of a vehicle body as shown in Fig. 1, A plurality of electrical components such as a fuel cell stack 5, a super cap, a junction box, and an inverter are mounted.

상기 탱크모듈(3)에서 상기 연료전지스택(5)까지는 수소파이프(6)를 통해 연결되어 있고, 상기 탱크모듈(3)과 상기 엔진룸(4)에는 누설되는 수소를 검출할 수 있는 수소센서(7)가 장착되어 있으며, 상기 탱크모듈(3)과 상기 엔진룸(4)은 대기와 연결된 벤트홀(미도시)이 구비되어 있다.The tank module 3 and the engine room 4 are connected to the fuel cell stack 5 through a hydrogen pipe 6. The tank module 3 and the engine room 4 are connected to a hydrogen sensor And the tank module 3 and the engine room 4 are provided with a vent hole (not shown) connected to the atmosphere.

따라서, 탱크모듈(3)이나 엔진룸(4)에서 많은 양의 수소가 누설될 경우, 수소센서(7)의 신호를 전달받은 차량의 제어기에 의해 시스템이 셧다운(shutdown)되고, 누설된 수소는 탱크모듈(3)이나 엔진룸(4)의 내부압력(고압)과 대기와의 압력 (저압)차이로 인해 벤트홀을 통해 대기중으로 자연적으로 빠져나가게 된다.Therefore, when a large amount of hydrogen leaks from the tank module 3 or the engine room 4, the system is shut down by the controller of the vehicle that has received the signal of the hydrogen sensor 7, The air is naturally discharged to the atmosphere through the vent hole due to the difference between the internal pressure (high pressure) of the tank module 3 or the engine room 4 and the pressure (low pressure) between the atmosphere and the atmosphere.

그러나, 종래의 연료전지버스는 엔진룸(4)에 수소가 누설된 경우, 시스템이 셧다운되기 전에 전장품에서 스파크(spark) 등이 발생하면 화재가 발생할 우려가 있었다.However, in the conventional fuel cell bus, when hydrogen is leaked to the engine room 4, a spark or the like may occur in electrical equipment before the system is shut down.

이에 본 발명은 상기와 같은 문제점을 해소하기 위해 안출된 것으로, 다수의 전장품이 장착된 엔진룸에서 많은 양의 수소가 누설된 경우 누설된 수소를 대기로 빠르게 강제 배출시킬 수 있도록 함으로써, 원치 않는 차량의 화재발생을 미리 예방할 수 있도록 하는 연료전지버스용 엔진룸의 누설 수소 강제배출장치를 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an engine room in which a large amount of hydrogen is leaked, Which can prevent the occurrence of fire of the fuel cell bus in advance.

상기한 바의 목적을 달성하기 위한 본 발명 연료전지버스용 엔진룸의 누설 수소 강제배출장치는, 엔진룸의 공기를 빨아 당겨서 대기중으로 배출시킬 수 있도록 루프패널에 고정 설치된 팬과; 상기 엔진룸과 대기를 연결하도록 상기 루프패널에 고정 설치된 배기파이프와; 대기압보다 높은 내부압력을 가지는 에어탱크와; 일단은 대기중으로 노출된 위치의 상기 배기파이프에 연결되고 타단이 상기 에어탱크에 연결되며 양단사이에 릴레이를 구비한 에어분사파이프와; 상기 엔진룸내에 장착된 수소센서의 신호를 전달받아 상기 팬과 상기 릴레이의 구동을 제어하는 콘트롤러;를 포함하는 것을 특징으로 한다.In order to accomplish the above object, the present invention provides a lean-hydrogen forced exhaust apparatus for an engine room for a fuel cell bus, comprising: a fan fixed to a roof panel so as to suck air in an engine room and discharge it to the atmosphere; An exhaust pipe fixed to the roof panel to connect the engine room and the atmosphere; An air tank having an internal pressure higher than atmospheric pressure; An air injection pipe having one end connected to the exhaust pipe at a position exposed to the atmosphere and the other end connected to the air tank and having a relay between both ends; And a controller for receiving driving signals from the hydrogen sensor mounted in the engine room and controlling driving of the fans and the relays.

본 발명에 의하면, 연료전지버스에서 엔진룸으로 수소가 누설되면, 누설된 수소를 대기중으로 빠른 시간내에 강제 배출시킬 수 있게 됨으로써, 시스템이 셧다운(shutdown)되기 전 엔진룸에 장착된 전장품에서 스파크(spark) 등이 발생하더라도, 차량의 화재를 예방할 수 있는 효과가 있다.According to the present invention, when hydrogen leaks from the fuel cell bus to the engine room, the leaked hydrogen can be forcedly discharged to the atmosphere in a short period of time. As a result, the spark spark or the like occurs, it is possible to prevent a fire in the vehicle.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

도 2에는 본 발명에 따른 연료전지버스용 엔진룸의 누설 수소 강제배출장치를 설명하기 위한 도면이 도시되어 있다.FIG. 2 is a view for explaining a leaking hydrogen forced discharge apparatus for an engine room for a fuel cell bus according to the present invention.

연료전지버스는 도 1을 참조로 설명한 바와 같이 차체의 전방쪽 루프패널(1)상에 다수개의 수소탱크(2)가 고정 설치된 탱크모듈(3)이 장착되고, 차체의 후방쪽 하단 엔진룸(4)에는 연료전지스택(5), 슈퍼캡(super cap), 정션 박스(junction box), 인버터(inverter) 등 다수개의 전장품이 장착되어 있다.The fuel cell bus includes a tank module 3 mounted with a plurality of hydrogen tanks 2 fixed on the front roof panel 1 of the vehicle body as described with reference to Fig. 4 is equipped with a plurality of electrical components such as a fuel cell stack 5, a super cap, a junction box, and an inverter.

상기 탱크모듈(3)에서 상기 연료전지스택(5)까지는 수소파이프(6)를 통해 연결되어 있고, 상기 탱크모듈(3)과 상기 엔진룸(4)에는 누설되는 수소를 검출할 수 있는 수소센서(7)가 장착되어 있다.The tank module 3 and the engine room 4 are connected to the fuel cell stack 5 through a hydrogen pipe 6. The tank module 3 and the engine room 4 are connected to a hydrogen sensor (Not shown).

한편, 본 발명에 따른 엔진룸의 누설 수소 강제배출장치는 도 2에 도시된 바와 같이, 상기 엔진룸(4)의 상측에 위치하는 상기 루프패널(1)에 팬(11)과 배기파이프(12)가 고정 설치된다.As shown in FIG. 2, the leaking hydrogen forced exhaust system of the engine room according to the present invention includes a fan 11 and an exhaust pipe 12 (not shown) disposed on the roof panel 1 positioned above the engine room 4, Is fixedly installed.

상기 팬(11)은 상기 엔진룸(4)의 공기를 강제로 빨아 당겨서 대기중으로 배출시키는 것으로 팬파이프(13)를 통해 상기 엔진룸(4)과 연결된 구성이다.The fan 11 forcibly sucks air in the engine room 4 and discharges the air to the atmosphere. The fan 11 is connected to the engine room 4 through a fan pipe 13.

상기 배기파이프(12)는 상기 엔진룸(4)과 대기를 연결하는 파이프이며, 세 개의 단부를 가지는 티(Ｔ)자 모양으로 형성된다.The exhaust pipe 12 is a pipe connecting the engine room 4 and the atmosphere, and is formed into a tee shape having three ends.

상기 배기파이프(12)에서 수평상태로 위치한 두 개의 단부는 대기중으로 노출되도록 설치되고, 두 개의 단부에 대해 수직하게 연결된 나머지 한 개의 단부는 상기 엔진룸(4)과 연결되도록 설치된다.Two end portions of the exhaust pipe 12 positioned horizontally are installed to be exposed to atmosphere and one end portion of the exhaust pipe 12 vertically connected to the engine room 4 is connected to the engine room 4.

또한, 본 발명은 대기압보다 높은 내부압력을 가지는 에어탱크(14)와, 일단은 상기 배기파이프(12)에서 대기중으로 노출되어 수평상태로 위치한 두 개의 단부 중 어느 한 개의 단부에 연결되고 타단은 상기 에어탱크(14)에 연결된 에어분사파이프(15)와, 상기 에어분사파이프(15)상에 설치된 릴레이(16)와, 상기 엔진룸(4)내에 장착된 상기 수소센서(7)의 신호를 전달받아 상기 팬(11)과 상기 릴레이(16)의 구동을 제어하는 콘트롤러(17)를 포함하여 구성된다.In addition, the present invention provides an air conditioner comprising an air tank (14) having an internal pressure higher than atmospheric pressure, one end connected to one end of the two ends positioned horizontally exposed to the atmosphere in the exhaust pipe (12) A relay 16 installed on the air injection pipe 15 and a signal of the hydrogen sensor 7 mounted in the engine room 4 are transmitted to the air tank 14, And a controller (17) for controlling the operation of the fan (11) and the relay (16).

이하, 본 발명 실시예의 작용에 대해 설명한다.Hereinafter, the operation of the embodiment of the present invention will be described.

내구성 저하나 또는 충격 등으로 인해 수소파이프(6)가 파손되고, 상기 수소파이프(6)의 파손된 부위를 통해 수소가 엔진룸(4)으로 누설되면, 누설된 수소는 엔진룸(4) 공간의 위쪽으로 상승한다.If the hydrogen pipe 6 is broken due to low durability or impact or the like and hydrogen is leaked to the engine room 4 through the broken part of the hydrogen pipe 6, As shown in FIG.

그러면, 수소센서(7)는 누설된 수소를 검출하여 이때의 신호를 콘트롤러(17)로 전달하게 되고, 상기 콘트롤러(17)는 누설된 수소의 양을 기준치와 대비 판단하게 된다.Then, the hydrogen sensor 7 detects the leaked hydrogen and transmits a signal at this time to the controller 17, and the controller 17 judges the amount of leaked hydrogen as compared with the reference value.

이때, 엔진룸(4)으로 누설된 수소의 양이 기준치를 초과할 경우, 상기 콘트롤러(17)는 제어신호를 보내 팬(11)과 릴레이(16)를 동시에 구동시키게 된다.At this time, when the amount of hydrogen leaked to the engine room 4 exceeds the reference value, the controller 17 sends a control signal to simultaneously drive the fan 11 and the relay 16. [

상기 팬(11)의 구동에 의해 엔진룸(4)으로 누설된 수소는 팬파이프(13)를 통해 대기중으로 빠르게 배출된다.(화살표 M1)The hydrogen leaked into the engine room 4 by the operation of the fan 11 is rapidly discharged to the atmosphere through the fan pipe 13. (Arrow M1)

그리고, 상기 릴레이(16)가 구동하면 에어탱크(14)의 에어는 에어분사파이프(15) 및 배기파이프(12)를 통해 대기로 분사된다.(화살표 M2)When the relay 16 is driven, the air in the air tank 14 is injected into the atmosphere through the air injection pipe 15 and the exhaust pipe 12. (arrow M2)

이에 따라, 엔진룸(4)으로 누설된 수소가 상기 배기파이프(12)를 통해 대기로 배출되는 속도가 증가하게 되므로, 상기 엔진룸(4)으로 누설된 수소는 빠른 속도로 대기로 배출된다.Accordingly, the speed at which the hydrogen leaking into the engine room 4 is discharged to the atmosphere through the exhaust pipe 12 is increased, so that the hydrogen leaking into the engine room 4 is discharged to the atmosphere at a high speed.

즉, 엔진룸(4)으로 누설된 수소는 상기 엔진룸(4)의 압력(고압)과 대기의 압력(저압)차에 의해 상기 배기파이프(12)를 통해 대기로 배출된다.That is, the hydrogen leaking to the engine room 4 is discharged to the atmosphere through the exhaust pipe 12 by the difference between the pressure (high pressure) of the engine room 4 and the atmospheric pressure (low pressure).

이때, 에어탱크(14)의 고압의 에어가 배기파이프(12)를 통해 대기로 분사되면, 배기파이프(12)를 통해 엔진룸(4)속의 누설된 수소를 빨아당기는 힘이 강해지므로, 상기 엔진룸(4)으로 누설된 수소는 배기파이프(12)를 통해 빠른 속도로 대기로 배출되는 것이다.At this time, when the high-pressure air of the air tank 14 is injected into the atmosphere through the exhaust pipe 12, the force of sucking the leaked hydrogen in the engine room 4 through the exhaust pipe 12 becomes strong. The hydrogen leaking into the room 4 is discharged to the atmosphere at a high speed through the exhaust pipe 12.

따라서, 본 발명의 실시예는 엔진룸(4)으로 수소가 누설되면, 누설된 수소를 대기중으로 빠른 시간내에 강제 배출시킬 수 있는 구성이므로, 시스템이 셧다운(shutdown)되기 전 엔진룸(4)에 장착된 전장품에서 스파크(spark) 등이 발생하더라도, 차량의 화재를 예방할 수 있는 장점이 있다.Therefore, in the embodiment of the present invention, when the hydrogen leaks into the engine room 4, the leaked hydrogen can be discharged to the atmosphere in a short period of time. Therefore, before the system is shut down, Even if a spark or the like occurs in the mounted electrical device, there is an advantage that the fire of the vehicle can be prevented.

도 1은 연료전지차량의 측면도,1 is a side view of a fuel cell vehicle,

도 2는 본 발명에 따른 누설 수소 강제배출장치를 설명하기 위한 도면이다.2 is a view for explaining a leaking hydrogen forced discharge apparatus according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 >Description of the Related Art

1 - 루프패널 4 - 엔진룸1 - Loop panel 4 - Engine room

5 - 연료전지스택 6 - 수소파이프5 - Fuel cell stack 6 - Hydrogen pipe

7 - 수소센서 11 - 팬7 - Hydrogen sensor 11 - Fan

12 - 배기파이프 13 - 팬파이프12 - Exhaust pipe 13 - Fan pipe

14 - 에어탱크 15 - 에어분사파이프14 - Air tank 15 - Air injection pipe

16 - 릴레이 17 - 콘트롤러16 - Relay 17 - Controller

Claims (4)

엔진룸의 공기를 빨아 당겨서 대기중으로 배출시킬 수 있도록 루프패널에 고정 설치된 팬과;A fan fixed to the roof panel so as to suck air in the engine room and discharge it to the atmosphere; 상기 엔진룸과 대기를 연결하도록 상기 루프패널에 고정 설치된 배기파이프와;An exhaust pipe fixed to the roof panel to connect the engine room and the atmosphere; 대기압보다 높은 내부압력을 가지는 에어탱크와;An air tank having an internal pressure higher than atmospheric pressure; 일단은 대기중으로 노출된 위치의 상기 배기파이프에 연결되고 타단이 상기 에어탱크에 연결되며 양단사이에 릴레이를 구비한 에어분사파이프와;An air injection pipe having one end connected to the exhaust pipe at a position exposed to the atmosphere and the other end connected to the air tank and having a relay between both ends; 상기 엔진룸내에 장착된 수소센서의 신호를 전달받아 상기 팬과 상기 릴레이의 구동을 제어하는 콘트롤러;A controller which receives a signal of a hydrogen sensor installed in the engine room and controls driving of the fan and the relay; 상기 팬을 상기 엔진룸과 연결시켜주는 팬파이프;A fan pipe connecting the fan to the engine room; 를 포함하는 연료전지버스용 엔진룸의 누설 수소 강제배출장치.Wherein the lean hydrogen forced discharge device for an engine room for a fuel cell bus. 삭제delete 청구항 1에 있어서, 상기 배기파이프는 세 개의 단부를 가지는 티(Ｔ)자 모양으로 형성되는데, 수평상태로 위치한 두 개의 단부는 대기중으로 노출되면서 그 중 어느 한 개의 단부에 에어분사파이프가 연결되고, 두 개의 단부에 대해 수직하게 연결된 나머지 한 개의 단부는 상기 엔진룸과 연결되도록 설치된 것;[2] The exhaust pipe of claim 1, wherein the exhaust pipe is formed in a tee shape having three ends, wherein two end portions positioned in a horizontal state are exposed to the atmosphere and an air injection pipe is connected to either end of the exhaust pipe, And the other end connected to the two ends perpendicularly connected to the engine room; 을 특징으로 하는 연료전지버스용 엔진룸의 누설 수소 강제배출장치.Wherein the lean hydrogen forced discharge device for an engine room for a fuel cell bus. 청구항 1에 있어서, 상기 엔진룸에는 다수의 전장품 및 연료전지스택이 장착되고;The fuel cell system according to claim 1, wherein the engine room is equipped with a plurality of electrical components and a fuel cell stack; 상기 연료전지스택은 다수개의 수소탱크를 구비한 탱크모듈과 수소파이프를 매개로 연결된 것;Wherein the fuel cell stack is connected to a tank module having a plurality of hydrogen tanks through a hydrogen pipe; 을 특징으로 하는 연료전지버스용 엔진룸의 누설 수소 강제배출장치.Wherein the lean hydrogen forced discharge device for an engine room for a fuel cell bus.
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