CN2796121Y

CN2796121Y - Packaging device of fuel cell motor

Info

Publication number: CN2796121Y
Application number: CNU2005200416988U
Authority: CN
Inventors: 夏建伟; 胡里清; 李丽; 章波
Original assignee: Shanghai Shen Li High Tech Co Ltd
Current assignee: Shanghai Shenli Technology Co Ltd
Priority date: 2005-05-20
Filing date: 2005-05-20
Publication date: 2006-07-12
Anticipated expiration: 2015-05-20

Abstract

The utility model relates to a packaging device of a fuel cell motor, which comprises a blocked type packaging frame. All the components of the fuel cell motor except for an air cleaner and a radiator are packaged in the packaging frame. The packaging frame is provided with an air outlet, a ventilation opening, a tube inlet of the air cleaner, a tube inlet and a tube outlet of the radiator, an electric pile air end gas exhaust tube opening, an electric pile intermittent hydrogen gas exhaust tail tube opening, and a water feeding opening and a water discharging opening of a water container, wherein the air outlet is provided with a hydrogen gas detector and outwards extends an exhaust tube, and an exhaust fan is arranged on the exhaust tube. The ventilation opening extends outwards a vent tube, and a blower is arranged on the vent tube. Compared with the prior art, the utility model can effectively prevent dust, water and creepage, can check the concentration of the hydrogen gas in time and do the processing of discharging the hydrogen gas. Thus, the explosion created by the overflow of the hydrogen gas from the broken hydrogen gas pipelines is prevented effectively.

Description

Packaging device of fuel cell engine

Technical Field

The utility model relates to a fuel cell especially relates to a packaging hardware of fuel cell engine.

Background

An electrochemical fuel cell is a device capable of converting hydrogen and an oxidant into electrical energy and reaction products. The inner core component of the device is a Membrane Electrode (MEA), which is composed of a proton exchange Membrane and two porous conductive materials sandwiched between two surfaces of the Membrane, such as carbon paper. The membrane contains a uniform and finely dispersed catalyst, such as a platinum metal catalyst, for initiating an electrochemical reaction at the interface between the membrane and the carbon paper. The electrons generated in the electrochemical reaction process can be led out by conductive objects at two sides of the membrane electrode through an external circuit to form a current loop.

At the anode end of the membrane electrode, fuel can permeate through a porous diffusion material (carbon paper) and undergo electrochemical reaction on the surface of a catalyst to lose electrons to form positive ions, and the positive ions can pass through a proton exchange membrane through migration to reach the cathode end at the other end of the membrane electrode. At the cathode end of the membrane electrode, a gascontaining an oxidant (e.g., oxygen), such as air, forms negative ions by permeating through a porous diffusion material (carbon paper) and electrochemically reacting on the surface of the catalyst to give electrons. The anions formed at the cathode end react with the positive ions transferred from the anode end to form reaction products.

In a pem fuel cell using hydrogen as the fuel and oxygen-containing air as the oxidant (or pure oxygen as the oxidant), the catalytic electrochemical reaction of the fuel hydrogen in the anode region produces hydrogen cations (or protons). The proton exchange membrane assists the migration of positive hydrogen ions from the anode region to the cathode region. In addition, the proton exchange membrane separates the hydrogen-containing fuel gas stream from the oxygen-containing gas stream so that they do not mix with each other to cause explosive reactions.

In the cathode region, oxygen gains electrons on the catalyst surface, forming negative ions, which react with the hydrogen positive ions transported from the anode region to produce water as a reaction product. In a proton exchange membrane fuel cell using hydrogen, air (oxygen), the anode reaction and the cathode reaction can be expressed by the following equations:

and (3) anode reaction:

and (3) cathode reaction:

in a typical pem fuel cell, a Membrane Electrode (MEA) is generally placed between two conductive plates, and the surface of each guide plate in contact with the MEA is die-cast, stamped, or mechanically milled to form at least one or more channels. The flow guide polar plates can be polar plates made of metal materials or polar plates made of graphite materials. The diversion porecanals and the diversion grooves on the diversion polar plates respectively lead the fuel and the oxidant into the anode area and the cathode area on two sides of the membrane electrode. In the structure of a single proton exchange membrane fuel cell, only one membrane electrode is present, and a guide plate of anode fuel and a guide plate of cathode oxidant are respectively arranged on two sides of the membrane electrode. The guide plates are used as current collector plates and mechanical supports at two sides of the membrane electrode, and the guide grooves on the guide plates are also used as channels for fuel and oxidant to enter the surfaces of the anode and the cathode and as channels for taking away water generated in the operation process of the fuel cell.

In order to increase the total power of the whole proton exchange membrane fuel cell, two or more single cells can be connected in series to form a battery pack in a straight-stacked manner or connected in a flat-laid manner to form a battery pack. In the direct-stacking and serial-type battery pack, two surfaces of one polar plate can be provided with flow guide grooves, wherein one surface can be used as an anode flow guide surface of one membrane electrode, and the other surface can be used as a cathode flow guide surface of another adjacent membrane electrode, and the polar plate is called a bipolar plate. A series of cells are connected together in a manner to form a battery pack. The battery pack is generally fastened together into one body by a front end plate, a rear end plate and a tie rod.

A typical battery pack generally includes: (1) the fuel (such as hydrogen, methanol or hydrogen-rich gas obtained by reforming methanol, natural gas and gasoline) and the oxidant (mainly oxygen or air) are uniformly distributed in the diversion trenches of the anode surface and the cathode surface; (2) the inlet and outlet of cooling fluid (such as water) and the flow guide channel uniformly distribute the cooling fluid into the cooling channels in each battery pack, and the heat generated by the electrochemical exothermic reaction of hydrogen and oxygen in the fuel cell is absorbed and taken out of the battery pack for heat dissipation; (3) the outlets of the fuel gas and the oxidant gas and the corresponding flow guide channels can carry out liquid and vapor water generated in the fuel cell when the fuel gas and the oxidant gas are discharged. Typically, all fuel, oxidant, and cooling fluid inlets and outlets are provided in one or both end plates of the fuel cell stack.

The proton exchange membrane fuel cell can be used as a power system of vehicles such as vehicles and ships, and can also be used as a mobile or fixed power station. When the fuel cell is used as an engine of a vehicle such as a vehicle and a ship, particularly as an engine of a vehicle, a great amount of dust or water on a road erodes the fuel cell engine, and once the dust or water enters the fuel cell engine, the dust or water may cause electric leakage of a stack in the fuel cell engine or damage other components, and even cause the stack to be fatally damaged and break down. In the existing fuel cell engine packaging technology, a good method for preventing dust and water from entering a fuel cell engine does not exist, and a good hydrogen leakage safety alarm measure does not exist.

Disclosure of Invention

The utility model aims at providing a fuel cell engine packaging device which can effectively prevent dust and water and has the hydrogen leakage safety alarm function in order to overcome the defects of the prior art.

The purpose of the utility model can be realized through the following technical scheme: the utility model provides a packaging hardware of fuel cell engine, its characterized in that, includes closed encapsulation frame, this encapsulation frame all encapsulates including fuel cell engine except that air cleaner and radiator's whole parts, the encapsulation frame be equipped with air exit, vent, air cleaner pipe import, radiator pipe import and export, pile air tail gas exhaust mouth of pipe, pile intermittent type nature hydrogen discharge tail mouth of pipe, water tank filler and outlet, the air exit be equipped with hydrogen detector, this air exit outwards extends a blast pipe, is equipped with the exhaust fan on this blast pipe, the vent outwards extend a ventilation pipe, be equipped with the air-blower on this ventilation pipe.

The exhaust exit set up at least one, this at least one exhaust exit outwards extends the exhaust pipe, the exhaust pipe more than two finally assembles into total exhaust pipe, the exhaust fan establish at this total exhaust pipe end.

The ventilating pipe is internally provided with a filtering layer, and the blower is arranged at the tail end of the ventilating pipe extending outwards. The air sent by the blower passes through the filter layer to remove dust and other impurities, so that clean air is ensured to be sent to the fuel cell engine.

And sealing rings are arranged between the air outlet, the air vent, the air filter pipe inlet, the radiator pipe inlet and outlet, the air tail gas discharge pipe orifice of the galvanic pile, the intermittent hydrogen discharge tail pipe orifice of the galvanic pile, the water tank water filling port and the water outlet and matched pipe fittings respectively.

The utility model discloses all package all the other parts except air cleaner and radiator with the fuel cell engine in the encapsulation frame to seal up the gap and the leak of frame, all add the sealing washer in the business turn over pipe of air cleaner's the pipe that advances and radiator moreover. However, considering the encapsulation, there is a great potential risk that once hydrogen gas leaks out and reaches a certain concentration, it will be very likely to explode. Therefore, when the engine is sealed, the packaging frame is provided with an air outlet and a ventilation opening, the air outlet is provided with an exhaust fan, the ventilation opening is provided with an air blower, and the air outlet is additionally provided with a hydrogen detector. And in order to ensure that the air entering the air vent does not carry dust and impurities, a filter layer is specially added between the air vent and the blower. Compared with the prior art, the utility model discloses can effectively prevent dust, waterproof, anticreep to can in time detect hydrogen concentration, if surpass the warning range and report to the police immediately and make the processing of discharging hydrogen, thereby effectively prevent to break and spill over the explosion that hydrogen caused because of the hydrogen pipeline.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, a packaging device of a fuel cell engine comprises a sealed packaging frame 1, the packaging frame 1 packages all components of the fuel cell engine except an air filter 2 and a radiator 3, the packaging frame 1 is provided with an air outlet 4, a vent 5, an air filter pipe inlet 6, a radiator pipe inlet 7 and an outlet 8, a stack air tail gas discharge pipe orifice (not shown), a stack intermittent hydrogen discharge tail pipe orifice (not shown), a water tank water fillingport and a water discharge port (not shown), the air outlet is provided with a hydrogen detector 9, the air outlet extends outwards to form an exhaust pipe 10, the exhaust pipe is provided with an exhaust fan 11, the vent extends outwards to form a vent pipe 12, and the vent pipe is provided with a blower 13. The exhaust outlet 4 set up two, these two exhaust outlet 4 outwards extend exhaust pipe 10, these two exhaust pipe 10 finally assemble into total exhaust pipe 14, exhaust fan 11 establish at this total exhaust pipe 14 end. A filter layer 15 is arranged in the ventilation pipe 12, and the blower 13 is arranged at the tail end of the ventilation pipe 12 extending outwards. And a sealing ring 16 is arranged between the exhaust outlet 4, the vent 5, the air filter pipe inlet 6, the radiator pipe inlet 7 and outlet 8, the air exhaust discharge pipe orifice (not shown) of the galvanic pile, the intermittent hydrogen exhaust tail pipe orifice (not shown) of the galvanic pile, the water tank water filling port and the water discharging port (not shown) and respective matched pipe fittings.

Claims

1. The utility model provides a packaging hardware of fuel cell engine, its characterized in that, includes closed encapsulation frame, this encapsulation frame all encapsulates including fuel cell engine except that air cleaner and radiator's whole parts, the encapsulation frame be equipped with air exit, vent, air cleaner pipe import, radiator pipe import and export, pile air tail gas exhaust mouth of pipe, pile intermittent type nature hydrogen discharge tail mouth of pipe, water tank filler and outlet, the air exit be equipped with hydrogen detector, this air exit outwards extends a blast pipe, is equipped with the exhaust fan on this blast pipe, the vent outwards extend a ventilation pipe, be equipped with the air-blower on this ventilation pipe.

2. The packaging structure of a fuel cell engine as defined in claim 1, wherein at least one exhaust opening is provided, the at least one exhaust opening extends outward to form an exhaust duct, more than two exhaust ducts are finally converged into a total exhaust duct, and the exhaust fan is provided at the end of the total exhaust duct or the exhaust duct.

3. The fuel cell engine enclosure of claim 1, wherein a filter is disposed within said vent tube, said blower being disposed at an end of the outwardly extending vent tube.

4. The packaging device of a fuel cell engine as claimed in claim 1, wherein sealing rings are disposed between the exhaust outlet, the ventilation opening, the air filter tube inlet, the radiator tube inlet and outlet, the stack air exhaust discharge tube opening, the stack intermittent hydrogen exhaust discharge tail tube opening, the water tank filler opening and the water outlet opening and the respective matched pipe fittings.