CN201072786Y - Fuel cell system with electromagnetic proportion valve - Google Patents
Fuel cell system with electromagnetic proportion valve Download PDFInfo
- Publication number
- CN201072786Y CN201072786Y CNU2007200734551U CN200720073455U CN201072786Y CN 201072786 Y CN201072786 Y CN 201072786Y CN U2007200734551 U CNU2007200734551 U CN U2007200734551U CN 200720073455 U CN200720073455 U CN 200720073455U CN 201072786 Y CN201072786 Y CN 201072786Y
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- Prior art keywords
- proportional valve
- electromagnetic proportional
- hydrogen
- fuel cell
- air
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- 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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Abstract
The utility model relates to a fuel battery system with an electromagnetic proportional valve, the system comprises a hydrogen storage tank, an air conveying device and a fuel battery stack, and also comprises an electromagnetic proportional valve and a pressure sensor, the hydrogen storage tank/air conveying device is connected with a hydrogen/air inlet of the fuel battery stack through the electromagnetic proportional valve, the pressure sensor is positioned at the place of the hydrogen/air inlet of the fuel battery stack and is connected with the electromagnetic proportional valve. Compared with the prior art, the utility model has the advantages of simple structure, low energy consumption and safe operation, etc.
Description
Technical field
The utility model relates to the servicing unit of fuel cell, relates in particular to a kind of fuel cell system that has electromagnetic proportional valve.
Background technology
Electrochemical fuel cell is a kind of device that hydrogen and oxidant can be changed into electric energy and product.The internal core parts of this device are membrane electrode (Membrane Electrode Assembly are called for short MEA), and membrane electrode (MEA) is made up of as carbon paper a proton exchange membrane, two porous conductive materials of film two sides folder.The catalyst that contains the initiation electrochemical reaction of even tiny dispersion on two boundary faces of film and carbon paper is as the metal platinum catalyst.The membrane electrode both sides can electrochemistry will take place with conductive body to be sent out and answers the electronics that generates in the process, draws by external circuit, constitutes current circuit.
At the anode tap of membrane electrode, fuel can pass porousness diffusion material (carbon paper) by infiltration, and electrochemical reaction takes place on catalyst surface, lose electronics, form cation, cation can pass proton exchange membrane by migration, arrives the other end cathode terminal of membrane electrode.At the cathode terminal of membrane electrode, contain the gas of oxidant (as oxygen), as air, pass porousness diffusion material (carbon paper), and the generation electrochemical reaction obtains electronics on catalyst surface, forms anion by infiltration.The cation of coming in the anion and the anode tap migration of cathode terminal formation reacts, and forms product.
Adopting hydrogen is fuel, and the air that contains oxygen is in the Proton Exchange Membrane Fuel Cells of oxidant (or pure oxygen is an oxidant), and fuel hydrogen has just produced hydrogen cation (or being proton) in the catalytic electrochemical reaction of anode region.Proton exchange membrane helps the hydrogen cation to move to the cathodic region from the anode region.In addition, proton exchange membrane is separated the air-flow and the oxygen containing air-flow of hydrogen fuel, they can not mixed mutually and produces explosion type reaction.
In the cathodic region, oxygen obtains electronics on catalyst surface, forms anion, and moves the hydrogen cation reaction of coming, reaction of formation product water with the anode region.In the Proton Exchange Membrane Fuel Cells that adopts hydrogen, air (oxygen), anode reaction and cathode reaction can be expressed in order to following equation:
Anode reaction: H
2→ 2H
++ 2e
Cathode reaction: 1/2O
2+ 2H
++ 2e → H
2O
In typical Proton Exchange Membrane Fuel Cells, membrane electrode (MEA) generally all is placed in the middle of the pole plate of two conductions, leads the surface that the membrane electrode plate contacts with membrane electrode for every and mills quarter by die casting, punching press or machinery, and formation is the guiding gutter of one or more at least.These lead the pole plate that the membrane electrode plate can above metal material, also can be the pole plates of graphite material.These lead anode region and cathodic region that water conservancy diversion duct on the membrane electrode plate and guiding gutter import fuel and oxidant the membrane electrode both sides respectively.In the structure of a Proton Exchange Membrane Fuel Cells monocell, only there is a membrane electrode, the membrane electrode both sides are respectively the baffler of anode fuel and the baffler of cathode oxidant.These bafflers are both as current collector plate, and also as the mechanical support on membrane electrode both sides, the guiding gutter on the baffler acts as a fuel again and enters the passage of anode, cathode surface with oxidant, and as the passage of taking away the water that generates in the fuel cell operation process.
In order to increase the gross power of whole Proton Exchange Membrane Fuel Cells, two or more monocells can be connected into battery pack or be unified into battery pack by the mode that tiles usually by straight folded mode.In straight folded, in-line battery pack, can there be guiding gutter on the two sides of a pole plate, and wherein one side can be used as the anode guide face of a membrane electrode, and another side can be used as the cathode diversion face of another adjacent membranes electrode, and this pole plate is called bipolar plates.A series of monocell connects together by certain way and forms a battery pack.Battery pack tightens together by front end-plate, end plate and pull bar usually and becomes one.
A typical battery stack generally includes: the water conservancy diversion import and the flow-guiding channel of (1) fuel and oxidant gas are distributed to fuel (hydrogen-rich gas that obtains as hydrogen, methyl alcohol or methyl alcohol, natural gas, gasoline) and oxidant (mainly being oxygen or air) in the guiding gutter of each anode, cathode plane equably after reforming; (2) import and export and the flow-guiding channel of cooling fluid (as water) are evenly distributed to cooling fluid in each battery pack inner cooling channel, and the heat absorption that hydrogen in the fuel cell, the exothermic reaction of oxygen electrochemistry are generated is also taken battery pack out of and dispelled the heat; (3) outlet of fuel and oxidant gas and corresponding flow-guiding channel, fuel gas and oxidant gas are when discharging, and portability goes out the liquid that generates in the fuel cell, the water of steam state.Usually, the import and export of all fuel, oxidant, cooling fluid are all opened on the end plate of fuel battery or on two end plates.
Proton Exchange Membrane Fuel Cells can be used as the dynamical system of delivery vehicles such as car, ship, can be used as portable, portable and fixed Blast Furnace Top Gas Recovery Turbine Unit (TRT) again.
Proton Exchange Membrane Fuel Cells is a fuel with pure hydrogen as the dynamical system of delivery vehicle generally during as the power station, is oxidant with the air.At present, comprise that the designed fuel cell pack of Canadian Ballard Power System Inc. generally moves under pressure.The relative pressure of operation air and hydrogen is generally at one more than the atmospheric pressure; And, the design of fuel cell pack generally also is adapted at operation under the pressure, its main feature is fuel cell inlet air pressure and outlet air pressure, and the pressure differential deltap P between fuel cell import Hydrogen Vapor Pressure and the outlet Hydrogen Vapor Pressure is bigger, greatly between 0.2～0.4 atmospheric pressure.
For the fuel cell pack of present this elevated pressures operation, generally be to make the air/hydrogen atmospheric pressure meet the needs of operating pressure between fuel cell pack and the fluid by regulating pressure-reducing valve.And the pressure-reducing valve that generally adopts at present has following shortcoming:
1. pressure-reducing valve volume, weight are often bigger, make, connect all cumbersome;
2. the operating state owing to fuel cell changes greatly, for example more high-power output or very small-power output, and pressure-reducing valve is difficult to reach the purpose of supply gas pressure all-the-time stable often than difficult realization automatic Regulation;
3. when pressure-reducing valve can't be given stabilizing voltage of fuel cell, cause the gas flow in the fuel cell to change easily, cause power generation performance to be difficult to control, if pressure-reducing valve lost efficacy, high pressure gas cognition is broken through electrode, can cause fire, blast when serious.
Summary of the invention
But the purpose of this utility model is exactly the fuel cell system that has electromagnetic proportional valve that a kind of automatic Regulation, dependable performance are provided for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions: a kind of fuel cell system that has electromagnetic proportional valve, this system comprises hydrogen container, air transport device, fuel cell pack, it is characterized in that, also comprise electromagnetic proportional valve, pressure sensor, described hydrogen container/air transport device is connected with the hydrogen/air import of fuel cell pack by electromagnetic proportional valve, described pressure sensor is arranged on the hydrogen/air import department of fuel cell pack, and is connected with electromagnetic proportional valve.
Described pressure sensor is provided with hydrogen and the air pressure preset value that enters fuel cell pack, and this pressure sensor is connected with the electromagnetic proportional valve that basis enters the hydrogen/air pressure pulse by-pass valve control high-frequency switch of fuel cell pack.
Described electromagnetic proportional valve comprises the hydrogen electromagnetic proportional valve, this hydrogen electromagnetic proportional valve is arranged on the hydrogen container outlet, described pressure sensor comprises the Hydrogen Vapor Pressure transducer, and this Hydrogen Vapor Pressure transducer is arranged on the hydrogen inlet place of fuel cell pack, and is connected with the hydrogen electromagnetic proportional valve.
Described electromagnetic proportional valve comprises the air electromagnetic proportional valve, this air electromagnetic proportional valve is arranged on the air transport device outlet, described pressure sensor comprises air pressure probe, and this air pressure probe is arranged on the air intlet place of fuel cell pack, and is connected with the air electromagnetic proportional valve.
The predetermined value of described hydrogen/air pressure is 0.1～5atm.
The pressure of described electromagnetic proportional valve front end hydrogen supply/air is greater than 5 atmospheric pressure.
Compared with prior art, hydrogen and air pressure that the utility model adopts the solenoid-operated proportional valve regulation to enter fuel cell pack, electromagnetic proportional valve is by pulse by-pass valve control high-frequency switch, switch number of times according to hydrogen that enters fuel cell pack and air pressure adjusting electromagnetic proportional valve, make the hydrogen that enters fuel cell pack and air pressure accurately on preset value, simple in structure, reliable and stable.
Description of drawings
Fig. 1 is the structural representation of the utility model fuel cell system.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of fuel cell system that has electromagnetic proportional valve, comprise hydrogen container 2, air transport device 3, fuel cell pack 5, electromagnetic proportional valve, pressure sensor, electromagnetic proportional valve is to make the high-frequency switch by the pulse by-pass valve control, regulate the switch number of times of electromagnetic proportional valve according to the hydrogen that enters fuel cell pack and air pressure, make the hydrogen that enters fuel cell pack and air pressure accurately on preset value.
Described electromagnetic proportional valve comprises hydrogen electromagnetic proportional valve 1, this hydrogen electromagnetic proportional valve 1 is arranged on hydrogen container 2 outlets, described pressure sensor comprises Hydrogen Vapor Pressure transducer 4, this Hydrogen Vapor Pressure transducer 4 is arranged on the hydrogen inlet place of fuel cell pack 5, and be connected with hydrogen electromagnetic proportional valve 1, described Hydrogen Vapor Pressure transducer 4 detects the Hydrogen Vapor Pressure that enters fuel cell pack, and with this Hydrogen Vapor Pressure signal feedback to hydrogen electromagnetic proportional valve 1, this hydrogen electromagnetic proportional valve 1 is regulated automatically according to the Hydrogen Vapor Pressure signal, makes the Hydrogen Vapor Pressure that enters fuel cell pack constant in predetermined value 0.1atm.
Described electromagnetic proportional valve comprises air electromagnetic proportional valve 1 ', this air electromagnetic proportional valve 1 ' is arranged on air transport device 3 outlets, described pressure sensor comprises air pressure probe 4 ', this air pressure probe 4 ' is arranged on the air intlet place of fuel cell pack 5, and be connected with air electromagnetic proportional valve 1 ', described air pressure probe 4 ' detects the air pressure that enters fuel cell pack, and with this air pressure signal feedback to air electromagnetic proportional valve 1 ', this air electromagnetic proportional valve is regulated its switch number of times automatically according to the air pressure signal, makes the air pressure that enters fuel cell pack constant in predetermined value 0.5atm.
The concrete condition of the predetermined value fuel cell heap of described hydrogen/air pressure can be 0.1～0.5atm.
The pressure of described electromagnetic proportional valve front end hydrogen supply/air is greater than 5 atmospheric pressure.
Claims (4)
1. fuel cell system that has electromagnetic proportional valve, this system comprises hydrogen container, air transport device, fuel cell pack, it is characterized in that, also comprise electromagnetic proportional valve, pressure sensor, described hydrogen container/air transport device is connected with the hydrogen/air import of fuel cell pack by electromagnetic proportional valve, described pressure sensor is arranged on the hydrogen/air import department of fuel cell pack, and is connected with electromagnetic proportional valve.
2. the fuel cell system that has electromagnetic proportional valve according to claim 1 is characterized in that, described pressure sensor is connected with the electromagnetic proportional valve of hydrogen/air pressure pulse by-pass valve control high-frequency switch by entering fuel cell pack.
3. the fuel cell system that has electromagnetic proportional valve according to claim 1 and 2, it is characterized in that, described electromagnetic proportional valve comprises the hydrogen electromagnetic proportional valve, this hydrogen electromagnetic proportional valve is arranged on the hydrogen container outlet, described pressure sensor comprises the Hydrogen Vapor Pressure transducer, this Hydrogen Vapor Pressure transducer is arranged on the hydrogen inlet place of fuel cell pack, and is connected with the hydrogen electromagnetic proportional valve.
4. the fuel cell system that has electromagnetic proportional valve according to claim 1 and 2, it is characterized in that, described electromagnetic proportional valve comprises the air electromagnetic proportional valve, this air electromagnetic proportional valve is arranged on the air transport device outlet, described pressure sensor comprises air pressure probe, this air pressure probe is arranged on the air intlet place of fuel cell pack, and is connected with the air electromagnetic proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200734551U CN201072786Y (en) | 2007-08-09 | 2007-08-09 | Fuel cell system with electromagnetic proportion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200734551U CN201072786Y (en) | 2007-08-09 | 2007-08-09 | Fuel cell system with electromagnetic proportion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201072786Y true CN201072786Y (en) | 2008-06-11 |
Family
ID=39551342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200734551U Expired - Fee Related CN201072786Y (en) | 2007-08-09 | 2007-08-09 | Fuel cell system with electromagnetic proportion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201072786Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764239B (en) * | 2008-12-26 | 2012-10-10 | 上海神力科技有限公司 | Fuel cell hydrogen gas circulating system with pulse width modulation solenoid valve |
-
2007
- 2007-08-09 CN CNU2007200734551U patent/CN201072786Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764239B (en) * | 2008-12-26 | 2012-10-10 | 上海神力科技有限公司 | Fuel cell hydrogen gas circulating system with pulse width modulation solenoid valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 Termination date: 20150809 |
|
| EXPY | Termination of patent right or utility model |