CN103066311A - Self-driven type micro-fluid membrane less fuel cell based on gravity effects - Google Patents

Self-driven type micro-fluid membrane less fuel cell based on gravity effects Download PDF

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Publication number
CN103066311A
CN103066311A CN201210532492XA CN201210532492A CN103066311A CN 103066311 A CN103066311 A CN 103066311A CN 201210532492X A CN201210532492X A CN 201210532492XA CN 201210532492 A CN201210532492 A CN 201210532492A CN 103066311 A CN103066311 A CN 103066311A
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fuel cell
self
reservoir
upper cover
cover plate
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CN201210532492XA
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CN103066311B (en
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宣晋
徐宏
王慧至
张莉
沈扬
梁耀彰
梁国熙
顾顺杰
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East China University of Science and Technology
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East China University of Science and Technology
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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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Abstract

The invention relates to a self-driven type micro-fluid membrane less fuel cell based on gravity effects. The self-driven type micro-fluid membrane less fuel cell based on the gravity effects is characterized in that an upper cover plate and a base plate of the fuel cell form a main body of the membrane less fuel cell, a guide line is used for guide out electric energy generated in the fuel cell for external electrical appliances to use, one end of an outlet pipe is connected with the upper cover plate of the fuel cell, a middle piece of the outlet pipe is connected with a speed regulating valve, an outlet of a liquid storage tank is placed inside a sealing ring after the sealing ring is connected with the upper cover plate of the fuel cell, and the outlet of the liquid storage tank is connected with a runner inlet on the upper cover plate of the fuel cell through the sealing ring. According to the self-driven type micro-fluid membrane less fuel cell, energy net output of the fuel cell can be improved by 10% or more, utilization efficiency of fuel is further improved, and simultaneously due to the fact that the number of external devices such as pumps is decreased, manufacturing, installing and operating processes of the whole device are simplified, and running cost and maintenance cost are reduced.

Description

A kind of based on the self-driving type microfluid under the Action of Gravity Field without membrane cell
[technical field]
The present invention relates to the fuel cell technology field, specifically, be a kind of based on the self-driving type microfluid under the Action of Gravity Field without membrane cell.
[background technology]
At present, well-known traditional microfluid fuel-cell device substantially all uses the external pump system to come feed fuels and oxidant, drive flow velocity that microfluid can very accurate control fluid to reach laminar condition with the external pump system, thereby reaction-ure fluid (fuel and oxidant) natural layering under the control of Laminar Flow has been removed from and has been used the needs of proton exchange membrane and effectively controlled the interior electrochemical reaction process of fuel-cell device.But dimensionally much larger than microfluid without membrane cell and be difficult to dwindle, road blocked without the membrane cell miniaturization to make microfluid usually in the external pump system; Secondly, even the power that existing state-of-the-art micropump consumes also about 100 μ W, has consumed whole microfluid without about 10% of the total electric energy output of membrane cell.These problems have caused difficulty to microfluid without practical application and the industrialization of membrane cell.
Self-driven micro-fluidic technologies is a kind of microfluid Driving technique that need not external drive equipment and consume extra power, this technology is not only easy and simple to handle and removed complicated external equipment from, bring great convenience for microfluid without manufacturing, assembling and the operation of membrane cell, promoted the energy output of battery, reduced production cost, also made microfluid become possibility without the miniaturization of membrane cell simultaneously.In recent years, many researchers were making every effort to that self-driven micro-fluidic technologies was applied to microfluid without membrane cell.But wherein most of owing to utilize the surface tension of bubble to realize the driving of fluid, if these class technology realization means are applied to microfluid without membrane cell, the bubble that comprises in the fluid will have a strong impact on the stability of whole output performance, reliability and the long-time running of battery.
[summary of the invention]
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of based on the self-driving type microfluid under the Action of Gravity Field without membrane cell; Consume the extra problems such as energy when solving existing microfluid fuel cell miniaturization difficulty and operation, overcome existing self-driven micro-fluidic technologies to the impact without film fuel battery performance output and long-time stability.
Design of the present invention: at fuel and the oxidant inlet place without membrane cell, but use two bottom opening also to connect the closed container of outside atmosphere with U-shaped tube connector, reservoir as reacting fluid replaces external pump to supply with two fluid streams, utilize the hydrostatics principle, under Action of Gravity Field, utilize the pressure official post fluid of importing and exporting automatically to flow into the runner of fuel cell, and after fuel battery inside carries out electrochemical reaction, flow out from outlet.Under the pressure reduction of constant import and export, two strands of reaction-ure fluids will keep stable automatically at the flow velocity of inside battery runner when fuel cell operation, by flow rate regulating valve is set in order to regulate the pressure difference of importing and exporting in outlet, make it reach required suitable reaction flow velocity thereby regulate easily the flow velocity of fluid in the microchannel.
The objective of the invention is to be achieved through the following technical solutions:
A kind of based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that,
Fuel cell upper cover plate and fuel cell substrate form the main body without membrane cell, and wire is in order to draw the electric energy that produces in the fuel cell for outside electrical appliance; Outlet one end is connected with the fuel cell upper cover plate, the stage casing is connected with governing valve, sealing ring is with after the fuel cell upper cover plate is connected, and places sealing ring inner the outlet of reservoir, by sealing ring the outlet of reservoir is connected with runner entrance on the fuel cell upper cover plate.
Being carved with width on the described substrate is 2mm, and the degree of depth is the T-shaped runner that liquidates of 0.5mm, and in the T-shaped runner both sides that liquidate two symmetrical rectangular recess is arranged, and can place carbon paper electrode in groove.
Described reservoir comprises piston push rod, piston, reservoir shell and U-shaped pipe.
The inwall of described outer surface of piston and reservoir shell joins, and this joint must seal, and has certain frictional resistance, makes piston keep original position under promoting without external force.
The connecting hole that described U-shaped pipe is offered by the reservoir outer casing bottom links to each other the junction epoxy sealing with the reservoir shell.
Described sealing ring links to each other with the fuel cell upper cover plate by epoxide-resin glue.
Described sealing ring has toughness, is fixedly also having the effect that seals the reservoir entrance concurrently in the reservoir.
Described reservoir is connected with the fuel cell upper cover plate with sealing ring and is connected to removable the connection.
Again postreaction thing after described reservoir internal reaction thing is used up.
Compared with prior art, good effect of the present invention is:
The present invention compares with existing external pump system drive reactant technology has suitable power density output, thereby but simultaneously owing to do not need external equipment that Net Energy output is promoted more than 10%, further promoted the utilization ratio of fuel; Simultaneously owing to reduced the external equipment such as pump, manufacturing, installation and the operating process of whole device are simplified greatly, the operation and maintenance cost reduces greatly; The volume of device also can manufacture arbitrary size as required, particularly makes the miniaturization of microfluid fuel cell become possibility.
[description of drawings]
Fig. 1 is the structural representation of this self-driving type microfluid fuel cell;
Fig. 2 is reservoir and vertical section, fuel cell junction structural map.
Being labeled as in the accompanying drawing: 1, fuel cell upper cover plate, 2, reservoir, 3, external wire, 4, sealing ring, 5, outlet, 6, the fuel cell substrate, 7, governing valve, 21, piston push rod, 22, piston, 23, the reservoir shell, 24, U-shaped pipe.
[embodiment]
Below provide the present invention a kind of based on the embodiment of the self-driving type microfluid under the Action of Gravity Field without membrane cell.
Embodiment 1
In Fig. 1, this self-driving type microfluid forms main body without membrane cell without membrane cell by fuel cell upper cover plate 1 and fuel cell substrate 6, being carved with width on the substrate 6 is 2mm, the degree of depth is the T-shaped runner that liquidates of 0.5mm, in the T-shaped runner both sides that liquidate two symmetrical rectangular recess are arranged, can place carbon paper electrode in groove, electrode top connects wire 3 in order to draw the electric energy that produces in the fuel cell for outside electrical appliance.Outlet 5 one ends are connected with the fuel cell upper cover plate, and the stage casing is connected with governing valve 7, and the effect of governing valve 7 is to control the flow velocity of reaction-ure fluid in runner by the rate of flow of fluid of regulating outlet, in order to reach the optimum Working of fuel cell.Sealing ring 4 is with after the fuel cell upper cover plate is connected, and places sealing ring inner the outlet of reservoir 2, by sealing ring 4 outlet of reservoir 2 is connected with runner entrance on the fuel cell upper cover plate 1.
In Fig. 2, reservoir 2 comprises piston push rod 21, piston 22, reservoir shell 23 and U-shaped pipe 24, piston 22 tops are connected with piston push rod 23, the inwall of piston 22 outer surfaces and reservoir shell 23 joins, this joint must seal, and has certain frictional resistance, make piston 22 under promoting without external force, keep original position, so that in the inner space that produces sealing of reservoir, when fluid flowed out storage tank, the inner space volume increased, and the pressure of internal gas is reduced, when inside and outside when having pressure reduction, to replenish into by U-shaped pipe 24 extraneous airs, and make internal pressure stable, thereby guarantee the constant of fuel cell import and export pressure difference, eliminated the retardation of the poor fluid flow of negative pressure, the flow velocity of steady fuel inside battery runner fuel and oxidant.
The connecting hole that U-shaped pipe 24 is offered by reservoir shell 23 bottoms links to each other with reservoir shell 23, and the junction epoxy sealing is in case extraneous gas enters the stability that affects device in the reservoir.
Sealing ring 4 links to each other with fuel cell upper cover plate 1 by epoxide-resin glue, and connecting place must keep sealing.Reservoir 2 outlet is connected reservoir 2 by sealing ring 4 with runner entrance on the fuel cell upper cover plate 1, connect needs sealing ring 4 to have certain toughness herein, fixedly also having the effect that seals reservoir 2 entrances concurrently in the reservoir 2, in case extraneous gas enters runner, and must be removable connection herein, after reservoir 2 internal reaction things are used up, it can be disassembled the postreaction thing.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise; can also make some improvements and modifications, these improvements and modifications also should be considered within the scope of protection of the present invention.

Claims (9)

  1. One kind based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that, fuel cell upper cover plate and fuel cell substrate form the main body without membrane cell, and wire is in order to draw the electric energy that produces in the fuel cell for outside electrical appliance; Outlet one end is connected with the fuel cell upper cover plate, the stage casing is connected with governing valve, sealing ring is with after the fuel cell upper cover plate is connected, and places sealing ring inner the outlet of reservoir, by sealing ring the outlet of reservoir is connected with runner entrance on the fuel cell upper cover plate.
  2. As claimed in claim 1 based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that, being carved with width on the described substrate is 2mm, the degree of depth is the T-shaped runner that liquidates of 0.5mm, in the T-shaped runner both sides that liquidate two symmetrical rectangular recess are arranged, in groove, can place carbon paper electrode.
  3. As claimed in claim 1 based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that described reservoir comprises piston push rod, piston, reservoir shell and U-shaped pipe.
  4. As claimed in claim 3 based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that the inwall of described outer surface of piston and reservoir shell joins, this joint must seal.
  5. As claimed in claim 3 based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that the connecting hole that described U-shaped pipe is offered by the reservoir outer casing bottom links to each other the junction epoxy sealing with the reservoir shell.
  6. As claimed in claim 1 based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that described sealing ring links to each other with the fuel cell upper cover plate by epoxide-resin glue.
  7. As claimed in claim 1 based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that described sealing ring has toughness, in fixing reservoir, also having the effect of sealing reservoir entrance concurrently.
  8. As claimed in claim 1 based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that described reservoir is connected with the fuel cell upper cover plate with sealing ring and is connected to removable the connection.
  9. As claimed in claim 1 based on the self-driving type microfluid under the Action of Gravity Field without membrane cell, it is characterized in that postreaction thing again after described reservoir internal reaction thing is used up.
CN201210532492.XA 2012-12-11 2012-12-11 Self-driven type micro-fluid membrane less fuel cell based on gravity effects Expired - Fee Related CN103066311B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107195922A (en) * 2017-05-08 2017-09-22 江苏理工学院 A kind of flexible microfluid is without membrane cell
CN109860651A (en) * 2019-01-25 2019-06-07 江苏理工学院 A kind of high-performance radial direction microfluid fuel cell
CN109888326A (en) * 2019-03-14 2019-06-14 重庆大学 Air-breathing with integrative cylindrical anode is without film microfluid fuel cell
CN112563514A (en) * 2020-12-03 2021-03-26 江苏理工学院 Self-suction type microfluid fuel cell based on paper-wrapped electrode
CN114824362A (en) * 2022-04-28 2022-07-29 常州工学院 Porous electrode type microfluidic fuel cell with slit type reactant delivery system

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CN101084364A (en) * 2004-11-19 2007-12-05 康奈尔研究基金会（有限公司） Planar membraneless microchannel fuel cell

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CN2726112Y (en) * 2004-03-12 2005-09-14 南京理工大学 Honeycomb imitation structure micro pipeline network heat exchanger
JP2005327538A (en) * 2004-05-13 2005-11-24 Mitsubishi Pencil Co Ltd Liquid fuel storage container
US20060257707A1 (en) * 2004-06-25 2006-11-16 Ultracell Corporation Disposable component on a fuel cartridge and for use with a portable fuel cell system
CN101084364A (en) * 2004-11-19 2007-12-05 康奈尔研究基金会（有限公司） Planar membraneless microchannel fuel cell

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107195922A (en) * 2017-05-08 2017-09-22 江苏理工学院 A kind of flexible microfluid is without membrane cell
CN107195922B (en) * 2017-05-08 2020-05-05 江苏理工学院 Bendable microfluid membraneless fuel cell
CN109860651A (en) * 2019-01-25 2019-06-07 江苏理工学院 A kind of high-performance radial direction microfluid fuel cell
CN109888326A (en) * 2019-03-14 2019-06-14 重庆大学 Air-breathing with integrative cylindrical anode is without film microfluid fuel cell
CN112563514A (en) * 2020-12-03 2021-03-26 江苏理工学院 Self-suction type microfluid fuel cell based on paper-wrapped electrode
CN114824362A (en) * 2022-04-28 2022-07-29 常州工学院 Porous electrode type microfluidic fuel cell with slit type reactant delivery system
CN114824362B (en) * 2022-04-28 2023-12-19 常州工学院 Porous electrode type microfluidic fuel cell with slit-type reactant delivery system

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