CN204204966U - Direct methanol fuel cell - Google Patents
Direct methanol fuel cell Download PDFInfo
- Publication number
- CN204204966U CN204204966U CN201420672670.3U CN201420672670U CN204204966U CN 204204966 U CN204204966 U CN 204204966U CN 201420672670 U CN201420672670 U CN 201420672670U CN 204204966 U CN204204966 U CN 204204966U
- Authority
- CN
- China
- Prior art keywords
- fuel
- fuel cell
- direct methanol
- vibration
- energy converter
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model discloses a kind of direct methanol fuel cell.It is made up of fuel supply channel, MEA film, ultrasonic vibration installation, sealing device, package casing; Adopt adhesion, inlay or bury modes such as covering, single-excitation ultrasonic oval vibration energy converter is arranged on package casing, becomes a part for fuel cell package shell; When using battery, Vibration on Start-up transducer carries out vibration to fuel and carries out fuel atomization supply.The utility model has the advantage of and only need to utilize mechanical oscillation just can improve the starting resistor of fuel cell, transient state and steady-state behaviour, and the new method of to be a kind of can be current direct methanol types of fuel cells fuel supply fuel, effectively can reduce the infiltration of methyl alcohol and not reduce the energy density of system.
Description
Technical field
The utility model belongs to fuel cell field, is specifically related to a kind of structure of high-energy-density direct methanol fuel cell.
Background technology
One of the feature key player becoming new forms of energy such as fuel cell possesses low stain, high efficiency, exempts from charging, noiseless, fuel source are wide, Proton Exchange Membrane Fuel Cells can (80 DEG C) start this feature and receives extensive concern at very low temperature.Direct methanol fuel cell (DMFC), be the mutation of Proton Exchange Membrane Fuel Cells, it can directly use methyl alcohol and not need to reform in advance.Compared with other battery, direct methanol fuel cell has following characteristics: the first, and its theoretical energy density is high especially, is the several times of existing lithium battery; The second, its extremely low working temperature makes it at room temperature can normally start; 3rd, fuel cost is low and store simple and convenient; 4th, its small in volume; 5th, need not the charging interval.Due to These characteristics, it is expected to be applied to various portable electric appts.Due to the problem of proton exchange membrane manufacturing technology, in course of reaction, methyl alcohol also can arrive negative electrode (methanol crossover) by proton exchange membrane from anode, thus reduces the electromotive force of battery and reduce the utilance of methyl alcohol.This problem seriously hinders applying of methanol fuel cell.
The main way of current solution methanol fuel cell infiltration is the methanol aqueous solution and the steam supply that adopt low concentration.Adopt the supply of the liquid of low concentration can effectively reduce the permeability of methyl alcohol, but the energy density of the obvious reduction system of meeting.Steam supply mode is gasified by methanol solution and participates in electrochemical reaction after passing through complicated diffusion structure, and the startability of battery can be caused like this to decline.
Utility model content
The purpose of this utility model is to provide a kind of direct methanol fuel cell, can improve the energy density of battery.
For achieving the above object, adopt technical scheme as follows:
A kind of direct methanol fuel cell, is made up of fuel supply channel, MEA film, single-excitation ultrasonic oval vibration energy converter, sealing device, package casing; Adopt adhesion, inlay or bury the mode covered, single-excitation ultrasonic oval vibration energy converter is arranged on package casing, becomes a part for fuel cell package shell or fuel supply channel anode flow field board; When using battery, fuel instils in single-excitation ultrasonic oval vibration energy converter, and fuel is supplied to anode with fine droplets and generates electricity.
By such scheme, the vibrating mass of described single-excitation ultrasonic oval vibration energy converter adopts piezoelectric ceramic piece.
By such scheme, described fuel cell is with fuel tank and emission-control equipment.
Owing to have employed the design philosophy integrated with the package casing of fuel cell, fuel battery energy metric density can not be reduced; Adopt the fuel of ultrasonic vibration supply mode supply fog form, the methyl alcohol of high concentration can be adopted and do not aggravate the infiltration of methyl alcohol, improving the energy density of fuel cell; Adopt the fuel of mode of vibration supply to be enter inside battery reaction with fine droplets, too high pressure differential can not be produced and cause methanol crossover to increase; Adopt the speed of mode of vibration supply fuel can control according to external circuit demand; The substance advantageous such as the living radical that ultrasonic vibration produces in methyl alcohol are in alleviation catalyst poisoning.
The beneficial effects of the utility model:
This novel advantage is only to need to utilize mechanical oscillation just can improve the starting resistor of fuel cell, transient state and steady-state behaviour, and the new method of to be a kind of can be current direct methanol types of fuel cells fuel supply fuel, effectively can reduce the infiltration of methyl alcohol and not reduce the energy density of system.The method that direct methanol fuel cell catalyst poisoning is alleviated in ultrasonic vibration is not limited to small-sized, single fuel cell, applicable equally for multiple or large-scale fuel cell.
Accompanying drawing explanation
Fig. 1: improve direct methanol fuel cell structure decomposing schematic representation;
Fig. 2: improve direct methanol fuel cell operating diagram;
Fig. 3: the impact of fuel atomization supply on direct methanol fuel cell open circuit voltage;
Fig. 4: the impact of fuel atomization supply on direct methanol fuel cell spark performance;
Wherein, 1-package casing, 2-sealing ring, 3-flow field channel, 4-sealing ring, 5-proton exchange membrane (MEA), 6-sealing ring, 7-fuel channel, 8-sealing ring, 9-package casing, 10-single-excitation ultrasonic oval vibration energy converter, 11-fuel tank, 12-methanol fuel cell, 13-emission-control equipment, 14-load.
Embodiment
Following examples are further illustrating technical solutions of the utility model, not as the restriction to protection range.
With reference to accompanying drawing 1, fuel channel 7 and flow field channel 3 sandwich MEA film 5, sealed by sealing ring 4 and 6, encapsulated by package casing 1 and 9, sealed by sealing ring 2 and 8, package casing 1 is connected by bolt or other modes with 9.Single-excitation ultrasonic oval vibration energy converter adopts to adhere to, inlay or bury the mode such as to be covered and is arranged on package casing, become a part for fuel cell package shell, to being about to the fuel ultrasonic radiation entering anode fuel feed path during work, after making it be atomized, enter feed path.Adopt the fuel of mode of vibration supply to be enter inside battery reaction with fine droplets, too high pressure differential can not be produced and cause methanol crossover to increase; Adopt the speed of mode of vibration supply fuel can control according to external circuit demand; The materials such as the living radical that ultrasonic vibration produces in methyl alcohol also help alleviation catalyst poisoning.
With reference to accompanying drawing 2, single-excitation ultrasonic oval vibration energy converter 10, the fuel of conveying from fuel tank 11 is supplied to anode of fuel cell by the form that vibration becomes fine droplet react, the electric energy produced is used for driving external loading 14, and the waste gas that fuel cell produces is recycled by emission-control equipment 13.
Adopt ultrasonic vibration supply fuel mode on the impact of direct methanol fuel cell open circuit voltage.Direct methanol fuel cell after improvement has carried out 2 groups of contrast tests, one is energized to ultrasonic transducer and makes it produce ultrasonic vibration, vibration frequency is 1MHz, fuel becomes small drop through ultrasonic transducer ground vibration plane after vibration, is then fed into the open circuit voltage generated electricity in fuel cell; Another kind is the open circuit voltage that the mode of direct feed fluid fuel traditionally carries out reacting.With reference to accompanying drawing 3, experimental result shows the open circuit voltage adopting the battery of ultrasonic vibration atomization supply fuel to be better than liquid supply.
Ultrasonic vibration mode is adopted to supply the impact of fuel on direct methanol fuel cell spark performance.Direct methanol fuel cell after improvement, one is energized to ultrasonic transducer and makes it produce ultrasonic vibration, and vibration frequency is 1MHz, the fuel of supply vibrated to the spark performance of rear direct methanol fuel cell; The mode of another direct feed fluid fuel traditionally carries out the stable discharging performance of reacting.As can be seen from experimental result, with reference to accompanying drawing 4, when carrying out discharge test to the load of change, the fuel cell system that the utility model proposes can keep good spark performance in each stage.
By adopting the mode of ultrasonic vibration to supply fuel, the infiltration of methyl alcohol decreases, and mass transport impedance diminishes thus battery open circuit voltage improves, and cell output also improves.
Claims (3)
1. a direct methanol fuel cell, is characterized in that being made up of fuel supply channel, MEA film, single-excitation ultrasonic oval vibration energy converter, sealing device, package casing; Adopt adhesion, inlay or bury the mode covered, single-excitation ultrasonic oval vibration energy converter is arranged on package casing, becomes a part for fuel cell package shell or fuel supply channel anode flow field board; When using battery, fuel instils in single-excitation ultrasonic oval vibration energy converter, is supplied to anode generates electricity with fine droplets.
2. direct methanol fuel cell as claimed in claim 1, is characterized in that the vibrating mass of described single-excitation ultrasonic oval vibration energy converter adopts piezoelectric ceramic piece.
3. direct methanol fuel cell as claimed in claim 1, is characterized in that described fuel cell is with fuel tank and emission-control equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672670.3U CN204204966U (en) | 2014-11-12 | 2014-11-12 | Direct methanol fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672670.3U CN204204966U (en) | 2014-11-12 | 2014-11-12 | Direct methanol fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204204966U true CN204204966U (en) | 2015-03-11 |
Family
ID=52662889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420672670.3U Expired - Fee Related CN204204966U (en) | 2014-11-12 | 2014-11-12 | Direct methanol fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204204966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362358A (en) * | 2014-11-12 | 2015-02-18 | 武汉理工大学 | Direct methanol fuel cell fuel-feeding method and structure thereof |
-
2014
- 2014-11-12 CN CN201420672670.3U patent/CN204204966U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362358A (en) * | 2014-11-12 | 2015-02-18 | 武汉理工大学 | Direct methanol fuel cell fuel-feeding method and structure thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103943873B (en) | MEMS methanol recapitalization fuel cell system | |
| CN101887981A (en) | Hydrogen closed circulation system used for fuel cell | |
| CN102456900A (en) | Humidifier for fuel cell and fuel cell system using the same as auxiliary humidifier | |
| Shaegh et al. | Membraneless hydrogen peroxide micro semi-fuel cell for portable applications | |
| CN103633352A (en) | Performance improvement method and structure of direct alcohol fuel cell | |
| CN106168641A (en) | A kind of membrane electrode test equipment of high temperature methanol fuel cell | |
| US8957622B2 (en) | Fuel cell system and electronic device | |
| CN103236554A (en) | Hydrogen-supply busbar nitrogen purging system for emergency power supply of fuel cell | |
| CN204204966U (en) | Direct methanol fuel cell | |
| CN104362358A (en) | Direct methanol fuel cell fuel-feeding method and structure thereof | |
| CN204289608U (en) | There is the hydrogen gas generating system of air humidity regulatory function | |
| CN101420039B (en) | Fuel cell system and method of computing fuel level | |
| US20160359187A1 (en) | Cell module | |
| CN203644882U (en) | Direct alcohol fuel battery structure | |
| US6942939B2 (en) | System and method for controlling methanol concentration in a fuel cell | |
| CN105070928A (en) | Fuel cell oxygen supply system and oxygen supply method thereof | |
| TW200406079A (en) | Fuel cell and driving method thereof | |
| CN110797560B (en) | Miniature membraneless liquid fuel cell with hydrogel solid electrolyte | |
| CN201437108U (en) | Solution atomizing device and fuel cell system | |
| CN203983410U (en) | A kind of from breathing pattern portable proton exchange film fuel battery electric pile structure | |
| TW201528603A (en) | Passive gas recovery system of fuel cell anode | |
| CN203179987U (en) | Nitrogen purging system for hydrogen supplying busbar of emergency power supply of fuel cell | |
| CN206250293U (en) | Portable high-efficiency alumina electrokinetic cell | |
| CN203895550U (en) | Water circulation control system for standby power supply of fuel cell | |
| CN104051766B (en) | A kind of water circulation control system of fuel cell stand-by power supply |
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: 20150311 Termination date: 20161112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |