CN1734821A - Fuel cell system - Google Patents
Fuel cell system Download PDFInfo
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- CN1734821A CN1734821A CNA2005100914066A CN200510091406A CN1734821A CN 1734821 A CN1734821 A CN 1734821A CN A2005100914066 A CNA2005100914066 A CN A2005100914066A CN 200510091406 A CN200510091406 A CN 200510091406A CN 1734821 A CN1734821 A CN 1734821A
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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
Abstract
A DMFC system which realizes appropriate temperature management on a methanol aqueous solution and on a DMFC with consideration given to the activity of methanol oxidation reaction between electrodes and suppression of degradation of solid polymer films. The fuel cell system according to the present invention comprises: a fuel cell which generates electric power by using liquid fuel; a fuel feed unit which feeds the liquid fuel to the fuel cell; an emission recovery unit which recovers emissions from the fuel cell; and a heat medium feed unit which feeds a heat medium for cooling the emissions to the emission recovery unit. Here, the heat medium cools the fuel cell.
Description
Technical field
The present invention relates to direct methanol fuel cell system, specifically, relate to the temperature treatment structure that is used for the stable operation direct methanol fuel cell system.
Background technology
Fuel cell is the device that is produced electric energy by hydrogen and oxygen, can obtain high generating efficiency by it.The principal character of battery of acting as a fuel can be enumerated, because the process that need not pass through heat energy or kinetic energy as generation mode in the past promptly can the direct generation of electricity, can expect that therefore the small-scale efficient rate generates electricity, can realize the low amount discharge of nitrogen compound etc. and noise or vibrate little thereby have environment friendly etc.Like this, because having, fuel cell can effectively utilize chemical energy that fuel holds and characteristic such as environmentally friendly, therefore just become the 21 century energy supply system by expectation, and use automobile uses with, the equipment that carries from universe, from the extensive generating on a small scale etc. of generating electricity, as the future that can in various uses, use new electricity generation system likely gazed at by people, and actively carrying out technological development towards practicability.
Wherein, polymer electrolyte fuel cell has the feature that working temperature is low, output density is high owing to comparing with the fuel cell of other kinds, and especially in recent years, as a form of polymer electrolyte fuel cell, direct methanol fuel cell (Direct Methanol Fuel Cell:DMFC) is extremely gazed at.DMFC does not need the methanol aqueous solution that acts as a fuel is carried out modification and directly anode supply, electrochemical reaction by methanol aqueous solution and oxygen obtains electric power, and in this electrochemical reaction, discharge carbon dioxide, discharge generation water from anode from negative electrode as reaction product.Methanol aqueous solution is compared with hydrogen, the energy height of per unit volume, is suitable for storage and blasts etc. dangerous for a short time, therefore is expected to as automobile or carries the power utilization of equipment etc.
This DMFC has 40～100 ℃ operating temperature range, and when high temperature province work, can improve the methanol oxidation reactive activity on electrode, and can improve the current density of the unit are of electrode, therefore can improve performance.On the other hand, the boiling point of methanol aqueous solution is low, the abundant condensation if the discharge methanol aqueous solution of discharging from anode is failed, then methyl alcohol is emitted to the outside, make the consumption of methyl alcohol increase, therefore adopt to make to the methanol aqueous solution of supplying with anode and the formation of carrying out heat exchange from anode or the effluent (discharge methanol aqueous solution, generate water) of discharging from negative electrode.
Patent documentation 1: the spy opens the 2004-178818 communique
As mentioned above, when high temperature province work, can improve the performance of DMFC, but, the solid polymer membrane that uses in comprising the polymer electrolyte fuel cell of DMFC has the character that is dissolved in the organic solvent, especially its solubility rises along with the temperature of organic solvent and becomes remarkable, if therefore improve the working temperature of DMFC, methanol aqueous solution more than 75 ℃ is contacted with solid polymer membrane, then cause the solid polymer membrane dissolving, promote the deterioration of the solid polymer membrane of DMFC inside, significantly reduce the problem in the life-span (reliability) of DMFC.Therefore, the temperature of DMFC is preferably 50～70 ℃ of temperature province work, especially preferably 60 ℃ ± 3 ℃ temperature province work.
In addition, the methanol aqueous solution of supplying with to DMFC preferably is adjusted into 0.5～4mol/L and more preferably is adjusted into 0.8～1.5mol/L concentration and uses, but because the boiling point of methyl alcohol is 64.7 ℃, if therefore the temperature of methanol aqueous solution is more than 65 ℃, then in the circulation path of methanol aqueous solution, methyl alcohol gasifies easily, thus cause the methyl alcohol that increase is emitted to the outside consumption, hinder the problems such as diffusivity of the methanol aqueous solution on electrode.
Summary of the invention
The present invention is in view of the above fact, its purpose is to provide the degradation inhibiting of temperature treatment on a kind of circulation path of considering methanol aqueous solution and methanol oxidation reactive activity on electrode and polymeric membrane, can realize the DMFC system of the temperature treatment of DMFC rightly.
For achieving the above object, the invention provides a kind of fuel cell system, possess the fuel cell that uses the liquid fuel generating, with the fuel supply mechanism of the described fuel cell of described liquid fuel supply, retrieve to supply with the thermal medium feed mechanism of the thermal medium that is used to cool off described ejected matter from the ejected matter recovering mechanism of the ejected matter of described fuel cell and to described ejected matter recovering mechanism, it is characterized in that: described thermal medium cools off described fuel cell.
Here, fuel supply mechanism is meant and will comprises the pipe arrangement etc. of liquid fuel supply fuel cell such as methyl alcohol, and if active type fuel cell, then can also comprise force feed device such as pump or store the jar etc. of liquid fuel.In addition, the ejected matter recovering mechanism is meant and is used to reclaim that the discharge methanol aqueous solution of discharging from the anode of fuel cell etc. is discharged fuel or carbon dioxide or the discharge oxidant of the air-out of discharging from negative electrode etc. or generate the pipe arrangement of water, and can comprise that the discharge added as required is with pump or be used for component separation such as the carbon dioxide that will no longer utilize in generating and be discharged to separator outside the system etc.According to above-mentioned formation, by the ejected matter that can utilize again in generating is cooled off, carry out abundant condensation, thereby can outside system, not discharge in vain, and can circulate again, in addition, can also make the temperature stabilization of fuel cell.
Except above-mentioned formation, can also possess the heat exchange department that is arranged on the described ejected matter recovering mechanism, when carrying out the heat exchange between described thermal medium and the described ejected matter in the described heat exchange department, carry out to the described liquid fuel of described fuel cell supply and the heat exchange between the described ejected matter.Except carrying out between thermal medium and the ejected matter the heat exchange, also between liquid fuel of supplying with to fuel cell and ejected matter, carry out heat exchange, can further reduce the temperature of ejected matter, make its abundant condensation.In addition, owing to the temperature rising of the liquid fuel of supplying with to fuel cell, just can begin the methanol oxidation reaction immediately as long as therefore be penetrated into anode.
In addition, can also be, described thermal medium be the fluid that is present in described fuel cell system outside, and after this thermal medium cooled off described fuel cell and described ejected matter, row was to described fuel cell system outside.Thus, because thermal medium is a fluid, can utilize thermal medium feed mechanisms such as fan or compressor in fuel cell system, to supply with thermal medium, therefore this fluid is to cooling off from the ejected matter of fuel cell or fuel cell self and be discharged from the outside, thereby can enough simple devices realizes the temperature treatment of fuel cell system.
In addition, can also be, possess: be arranged on described fuel cell system inside, be provided with the fuel cell chamber of described fuel cell and described ejected matter recovering mechanism, with the thermal medium inflow portion that is arranged in the described fuel cell chamber, described thermal medium is flowed into to described fuel cell chamber, with the thermal medium outflow portion that is arranged in the described fuel cell chamber, described thermal medium is flowed out from described fuel cell chamber, and the described thermal medium that circulates in described fuel cell chamber only flows into and only flows out from described thermal medium outflow portion from described thermal medium inflow portion.Thus,, therefore also can set the path and the flow in each stream of circulation arbitrarily, make the temperature treatment in the fuel cell system become easy because the gateway at the thermal medium of fuel cell chamber circulation is limited.In addition, when thermal medium is under the situation of fluids such as fuel cell system air outside, therefore can prevent the discrepancy of air, can prevent that steam and air from together flowing to the situation generation of electronic unit etc. of the control part of water funk branch from other parts of fuel cell chamber in fuel cell system.
And can be described fuel cell and described thermal medium inflow portion disposes in the mode of adjacency, and also can be described heat exchange department and described thermal medium outflow portion disposes in the mode of adjacency.By adopting such configuration mode, owing to supply with the thermal medium of low temperature more, supply with to heat exchange department and carried out heat exchange and thermal medium that temperature rises in fuel cell to fuel cell, therefore the temperature of the liquid fuel that can supply with fuel cell and ejected matter and to fuel cell is set in proper temperature.
In addition, can be, described fuel cell has polyhedral shape, and at least one face of described fuel cell disposes in the mode with the stream adjacency of described thermal medium.Therefore especially, the end plate of fuel cell generally is metal thereby heat dissipation capacity is big, if to the stream adjacency of the face and the thermal medium of this end plate of major general, then the temperature of fuel cell can be managed rightly.
Description of drawings
Fig. 1 is the schematic diagram of formation of the DMFC system of expression execution mode 1.
Fig. 2 is the stereogram of the DMFC system of embodiment 1.
Fig. 3 is the vertical view of the DMFC system of embodiment 1.
Fig. 4 is the sectional drawing of the AA ' the DMFC system, Fig. 3 of embodiment 1 to section.
Fig. 5 is the system's pie graph of formation that schematically shows the fuel cell system of embodiment 2.
Fig. 6 is in the fuel cell portion of fuel cell system of expression embodiment 2, and basket is by open vertical view.
Fig. 7 is in the fuel cell portion of fuel cell system of expression embodiment 2, and basket is by open front view.
Fig. 8 is in the fuel cell portion of fuel cell system of expression embodiment 2, and basket is by open front stereogram.
Fig. 9 is the front stereogram of the fuel cell system of expression embodiment 2.
Figure 10 is the rear isometric view of the fuel cell system of expression embodiment 2.
Figure 11 A is the front view of the air flows in the fuel cell portion of fuel cell system of expression embodiment 2.
Figure 11 B is the vertical view of the air flows in the fuel cell portion of fuel cell system of expression embodiment 2.
Figure 12 is the fuel cell system about embodiment 2, system's pie graph that the formation of having separated fuel cell portion and control part is schematically shown.
Figure 13 is the system's pie graph of formation that schematically shows the fuel cell system of embodiment 3.
Figure 14 is that the system that schematically represents the A-A ' section of Figure 13 constitutes sectional drawing.
Embodiment
(execution mode one)
Use accompanying drawing below, the formation of the DMFC system 100 of present embodiment is elaborated.
Fig. 1 is the schematic diagram of formation of the DMFC system 100 of expression present embodiment, wherein, DMFC system 100 possesses DMFC110, methanol tank 120 with methanol aqueous solution that fills the above high concentration of 20mol/L or pure methyl alcohol, with will be diluted to 1.2mol/L left and right sides concentration from the methyl alcohol of methanol tank 120, to store the surge tank 130 of the methanol aqueous solution of supplying with to DMFC110, with the control part 140 that power-converting device or auxiliary equipment class are controlled, with heat exchanger 150, with basket 160 and axial flow fan 170.
From air pump 132 air supplies, anode 114 is supplied with methanol aqueous solutions from surge tank 130 via liquor pump 134 to the negative electrode 112 of DMFC110.In addition, discharge from the negative electrode 112 of DMFC110 and not help air-out that generates electricity and the moisture that generates by reaction, discharge from anode 114 and do not help discharge methanol solution that generates electricity and the carbon dioxide that reaction, generates.Because the reaction of DMFC110 when generating is exothermic reaction, therefore passes through to DMFC110 air supply and methanol aqueous solution, the temperature of DMFC110 rises.Therefore, thermistor 142 or limiter are installed on DMFC110, axial flow fan 170 entrys into service when the temperature of DMFC110 reaches 55 ℃.By on the position relative with axial flow fan 170 of basket 160 air scoop 162 being set, if axial flow fan 170 entrys into service, then DMFC110 ambient air circulation is carried out air cooling to DMFC110.Thus, the temperature of DMFC110 can be set in 60 ± 3 ℃.
Because air pump 132 is from outside air supply, therefore the air of supplying with to negative electrode 112 is about 20～25 ℃, and DMFC110 utilizes axial flow fan 170 to carry out air cooling, so temperature is set at 60 ± 3 ℃.Air-out, moisture, discharge methanol aqueous solution, carbon dioxide that comes from this DMFC110 etc. all is with about 70 ℃ discharges, therefore carry out heat exchange with the methanol aqueous solution of supplying with to DMFC110, effluents such as air-out, moisture, discharge methanol aqueous solution, carbon dioxide are carried out condensation, simultaneously, preheating is to the methanol aqueous solution of DMFC110 supply.Here, greater than the needed heat of preheating methanol aqueous solution, so heat exchanger 150 also carries out air cooling by axial flow fan 170 from the heat exhaust of air-out, moisture, discharge methanol aqueous solution, carbon dioxide etc.Thus, moisture or discharge methanol aqueous solution and fully be condensed therefore need not be from external complement moisture, can prevent that methyl alcohol from emitting and the amount of increasing consumption to the outside.
Use embodiment below, the concrete structure of the DMFC system 100 that realizes above-mentioned formation is described.
(embodiment 1)
Fig. 2 is the stereogram of the DMFC system 200 of present embodiment, and Fig. 3 is the vertical view of DMFC system 200, and Fig. 4 is that the A-A ' of Fig. 3 is to the DMFC of section system 200 sectional drawings.
In embodiment 1, DMFC210, methanol tank 220, surge tank 230, control part 240, heat exchanger 250, axial flow fan 270 have been disposed respectively in as shown in Figure 2 mode, and be used to supply with, the pipe arrangement or the pump of air-out or methanol aqueous solution be to have carried out like that being configured in the both sides of DMFC210 and heat exchanger 250 after the blocking with 280a, 280b.
Shown in Figure 3, between DMFC210 and pipe arrangement unit 280a, 280b, be provided with the gap of several mm degree, the both sides of DMFC210 become the stream of tempering air.In addition, the side 260a of basket 260 and 260b and wall 264a and 264b etc. make the fuel cell chamber that comprises DMFC210 290 that is surrounded by these faces, connect airtight with the lid 266 that is used for the outside DMFC system 200 that blocks.Thereby, fuel cell chamber 290 only possesses from air scoop 262 air supplies and only from the structure of axial flow fan 270 air-outs, DMFC210 flows into so that do not block from the air of air scoop 262 on being set at and isolating position about number mm from the side 260a that is provided with air scoop 262.
Then, as shown in Figure 4, DMFC210 disposes separator 216 in the bottom, and the same stream that tempering air about several mm is set with the both sides of DMFC210.In addition, on DMFC210 and also can form the stream of the tempering air about number mm between the lid 266.In the DMFC210 of present embodiment, top and bottom are made of metal end plate 218a, 218b, and thermal discharge is maximum in each face of DMFC210.Especially since end plate 218b in the bottom be formed with anode methanol aqueous solution feed path and from the air-out of negative electrode and the discharge path of moisture, so temperature height and thermal discharge are maximum.Therefore,, make the tempering air circulation, can effectively cool off DMFC210 by at bottom configuration isolation part 216.
With as above mode stream behind the gap that is provided with around the DMFC210 about several mm as tempering air, like this, from air scoop 262 leaked-in airs arrive DMFC210 and flow through DMFC210 above, bottom surface and two sides, capture the reaction heat that causes by generating from DMFC210, flow into heat exchanger 250 again.At this moment, heat exchanger 250 leaked-in airs surpass the time point of 55 ℃ and axial flow fan 270 entrys into service in the temperature of DMFC210, and its temperature is 30～35 ℃, and near DMFC210 is 60 ℃ and usually during generating state, its temperature is about 40 ℃.
Get back to Fig. 2, under common generating state, air-out that the negative electrode from DMFC210 that heat exchanger 250 flows into is discharged and moisture and discharge methanol aqueous solution of discharging from anode and carbon dioxide etc. are to flow into about 70 ℃ temperature.And, for abundant condensation from the moisture of DMFC210 and discharge methanol aqueous solution, use the methanol aqueous solution supplied with to DMFC210 and cool off from the air that air scoop 262 flowed into and absorbed the reaction heat that the generating by DMFC210 causes.By this heat exchange, the methanol aqueous solution of supplying with to DMFC210 just, the methanol aqueous solution about normal temperature to 35 ℃ is heated to 60 ℃ as described later, and from the moisture of DMFC210 with discharge methanol aqueous solution and be cooled to about 40 ℃.Here, the carbon dioxide of discharging from DMFC210 solvent temperature during less than 30 ℃ solubility sharply increase, therefore till the moisture of heat exchanger 250 and the cooling of discharging methanol aqueous solution preferably proceed to about 35 ℃.
The air-out that is cooled in heat exchanger 250, moisture, discharge methanol aqueous solution, carbon dioxide etc. flow into surge tank 230, carry out gas-liquid separation here.In heat exchanger 250, be cooled to air-out about 40 ℃, moisture, discharge methanol aqueous solution, carbon dioxide etc. and flow into surge tank 230; usually be about 35 ℃ in the surge tank 230; thereby here; gas componant such as air-out, carbon dioxide is emitted to the outside, and moisture, discharge methanol aqueous solution are then supplied with to DMFC210 once more.(other business)
In the foregoing description 1, air scoop 262 is provided with up and down symmetrically, so that make tempering air on DMFC210, bottom surface and two sides evenly circulate, but for example under the situation bigger than the side from the top and heat dissipation capacity bottom surface, preferably the height dimension of the position of airport 262 and size, separator 216, the DMFC210 distance till the lid 266 is changed, so that the amount with the bottom surface flow air is many in the above.
More than be to flow into and be provided with to fuel cell chamber 290 from air scoop 262, but also can air be imported fuel cell chamber 290 and be provided with from axial flow fan 270 from the mode of air scoop 262 air-outs from the mode of axial flow fan 270 air-outs with air.But, in this case, think when disposing heat exchanger 250 near the air scoop 262 and near axial flow fan 270, dispose DMFC210, can obtain the heat balance as above-mentioned embodiment 1.In addition, in the foregoing description 1, when air-out, used axial flow fan 270, but so long as can be from the outside introduce the device of air, then be not limited to axial flow fan 270, can also use Sirocco fan, compressor etc. to fuel cell chamber 290.
According to present embodiment, with electronic equipment with when the DMFC of electronic equipment supply capability system is located on the machine and utilizes electronic equipment, can carry out the intrasystem temperature treatment of DMFC rightly and make its steady operation, but also can not dispose with the DMFC system to the mode that the user discharges heat.
(execution mode two)
Present embodiment relates to fuel cell system, specifically, relates to the fuel cell system of the electric power of the auxiliary equipment class consumption that can as far as possible reduce fuel cell system.
Because the electrochemical reaction during fuel cell power generation is exothermic reaction, therefore as described above, methanol aqueous solution temperature in cyclic process that anode is supplied with rises gradually, it circulates with the temperature higher about 5～40 ℃ than extraneous gas temperature, is heated and supplies with to the temperature than low about 5～10 ℃ of the working temperature of DMFC.
Relative with it, the oxygen of supplying with to the negative electrode of DMFC is, use feed mechanism such as air pump with DMFC system air outside with the temperature of extraneous gas temperature same degree under directly supply with to DMFC, perhaps similarly carry out heat exchange and heat to temperature, being supplied to than low about 5～10 ℃ of the working temperature of DMFC with the effluent of discharging from DMFC with anode.Under the former situation, if air to 10～30 ℃ of the DMFC supplies of working down at 40～100 ℃, then near the temperature the air intake of each battery cell (cell) descends, thereby causes the problem that activity descends, current density diminishes of this partial methanol oxidation reaction.In addition, owing to produce the inequality of current density in battery, so degradation speed also can produce inequality, produces the part of rapid deterioration thus, and then caused generally speaking shortening the problem in DMFC life-span.On the other hand, in the latter case, because cathode side also needs heat exchanger, thereby the formation that causes the DMFC system becomes outside the big problem, owing to become big because of heat exchanger makes the pressure loss on the feed path of air, therefore need the air pump of capacity respective degrees increase, and then cause the consumption electric power of the auxiliary equipment class of DMFC system to become big problem.
In view of the above fact, the purpose of present embodiment is to provide the fuel cell system of the electric power that a kind of auxiliary equipment class that as far as possible reduces fuel cell system consumes.
In the present embodiment, for achieving the above object, a kind of fuel cell system is provided, possess and utilize fuel cell that fuel and airborne oxygen generates electricity and to the air fed air feed mechanism of fuel cell, it is characterized in that: possess the circulation of air path of when being used for from the outside introducing of fuel cell system air the air of fuel cell system inside being discharged to the outside, the air intake of air feed mechanism is located on the circulation of air path.
Thus, introduce air from the air intake to fuel cell system inside.The fuel cell system temperature inside is owing to the heat release of fuel cell is higher than the extraneous gas temperature, therefore the temperature of the air of being introduced by the air intake is higher than the temperature of fuel cell system air outside, thereby supplies with to fuel cell after there is no need with heat exchanger etc. air to be heated again.Therefore, can reduce the electric power that air feed mechanism such as air pump consumes.
In the fuel cell system of aforesaid way, fuel cell can be located on the circulation of air path.In addition, in the fuel cell system of aforesaid way, fuel can be liquid fuel.By with fuel cell arrangement on the circulation of air path, when with the air of fuel cell system inside when discharge the outside, can carry out air cooling to fuel cell.And, in recent years, in the fuel cell of the type of the feed fluid fuel of extensively being gazed at such as DMFC system, when can reduce the consumption electric power of auxiliary equipment class of air feed mechanism etc., reduce the component count of fuel cell system.
In the fuel cell system of aforesaid way, can also possess air and the heat exchanger that carries out heat exchange from the effluent that fuel cell is discharged, heat exchanger can be located on the circulation of air path.Thus, can the effluents such as generation water of discharging from fuel cell be cooled off, condensation, especially in the fuel cell of feed fluid fuel, can carry out condensation, reduce the amount of the liquid fuel of emitting to the fuel cell system outside to the liquid fuel of discharging from fuel cell.
In the fuel cell system of aforesaid way, can also have fuel cell portion that comprises fuel cell and the control part of controlling the fuel fuel cell, wherein, fuel cell portion and control part can constitute in separable mode.Thus, can the fuel cell portion that generate electricity be changed jointly, make them can be corresponding in the various application.
Below to the fuel cell system of present embodiment, the limit is with reference to accompanying drawing, the limit describes in detail.
(embodiment 2)
Fig. 5 be expression this fuel system 1100 formation overlook ideograph.Fuel cell system 1100 possesses the DMFC1110 that generates electricity by anode supply methanol aqueous solution or pure methyl alcohol, methanol tank 1120 with methanol aqueous solution that fills the above high concentration of 16mol/L or pure methyl alcohol, with will be diluted to 0.1～2.0mol/L left and right sides concentration from the methyl alcohol of methanol tank 1120, to store the surge tank 1130 of the methanol aqueous solution of supplying with to DMFC1110, with the control part 1140 that power-converting device or auxiliary equipment class are controlled, with heat exchanger 1150, with axial flow fan 1160 and basket 1170.
From air pump 1180 air supplies, anode 114 is supplied with methanol aqueous solutions from surge tank 1130 via liquor pump 1182 to the negative electrode of DMFC1110.The 1184th, the air intake of air pump 1180, it is located at the central portion of this fuel cell 1100.Send to the cathode inlet 1112 of DMFC1110 from air ejiction opening 1186 from the air that the air intake 1184 of air pump 1180 is introduced.On the other hand, liquor pump 1182 is introduced the methanol aqueous solution that is diluted to 1.2mol/L left and right sides concentration from surge tank 1130 via liquid intake 1188, constitutes the structure of sending to the anode inlet 1114 of DMFC1110 from liquid spraying outlet 1190.
Fig. 6 represents will be with the vertical view of above-mentioned formation fuel battery assembled system 1110, represent front view with Fig. 7, represent the front stereogram with Fig. 8, represented to install the three-dimensional stereogram in front under the state of lid of fuel cell portion, identical with Fig. 9, represented to take off the rear isometric view under the state of lid of fuel cell with Figure 10.
Because the reaction of DMFC1110 when generating is exothermic reaction, therefore passes through to DMFC1110 air supply and methanol aqueous solution, the temperature of DMFC1110 rises.Therefore, not shown thermistor or limiter are installed on DMFC1110, near entry into service axial flow fan 1160 in the time of the temperature of DMFC1110 is working temperature (60 ± 3 ℃) about-5 ℃ (being 55 ℃ in the present embodiment).By on the position relative of basket 1170, air scoop 1172 being set with axial flow fan 1160, be provided with air scoop 1174 around the position of going into DMFC1110, if so entry into service axial flow fan 1160, then shown in Figure 11 A and 11B like that, air is circulation around DMFC1110, and DMFC1110 is carried out air cooling.Thus, the temperature of DMFC1110 can be set in 60 ± 3 ℃.
Discharge from cathode outlet 1116 from air and generation water that the negative electrode of DMFC1110 is discharged, discharge from the anode export 1118 of DMFC1110 from methanol aqueous solution and carbon dioxide that the anode of DMFC1110 is discharged.Import to heat exchanger 1150 from the effluent of cathode outlet 1116 and anode export 1118 discharges, merging flow into surge tank 1130.Supply with the air that hangs down about 5～15 ℃ temperature than the working temperature (60 ± 3 ℃) of DMFC1110 to air intake 1184 and heat exchanger 1150.Thereby, about 70 ℃ the air of discharging from DMFC1110, generate fully condensation heat exchanger 1150 such as water, methanol aqueous solution, carbon dioxide, therefore need not can prevent that methyl alcohol is discharged to the outside and the amount of increasing consumption from external complement moisture.
On the basket 1170 on the top of surge tank 1130, be provided with air scoop 1176, surge tank 1130 is used as dilution that the methyl alcohol from methanol tank 1120 is diluted to normal concentration (0.8～1.5mol/L, be about 1.2mol/L in the present embodiment) when jar using, also be used as by heat exchanger 1150 fully the gas-liquid separation mechanism of cooling and leaked-in air, generation water, methanol aqueous solution, carbon dioxide etc. use.That is, in surge tank 1130, discharge the air and the carbon dioxide of gas phase from air scoop 1176.On air scoop 1176, be provided with not shown filter, accessory substances such as formic acid or formaldehyde are attracted on the filter from air scoop 1176 air-outs or carbon dioxide the time.
Regularly supply with the high concentration methanol aqueous solution or pure methyl alcohol to surge tank 1130 from methanol tank 1120, perhaps, the concentration of the methanol aqueous solution in the surge tank 1130 is monitored and when detecting less than the defined threshold for example additional high concentration methanol aqueous solution or pure methyl alcohol during 0.8mol/L.Contain the parcel (pack) 1122 that possesses flexibility and constitute by material with anti-methyl alcohol in the inside of methanol tank 1120.And, the wall 1124 of methanol tank 1120 (top 1124a, side 1124b, back side 1124c) constitutes the part of basket 1170, be located at the air scoop 1178 on the 1124c of the back side, when the methyl alcohol in the methanol tank 1120 is consumed, when the volume of inner parcel 1122 diminishes, the part that makes the inside of methanol tank 1120 and wrap up 1122 outsides with the fuel cell system 1100 outside pressure reduction that produce.
As shown in figure 12, control part 1140 constitutes in the mode that cuts off (separable) with fuel cell portion 1192.The 1142nd, with the Department of Communication Force of fuel cell portion 1192 and control part 1140 electrical connections.Department of Communication Force 1142 becomes confined space in the mode of the discrepancy that do not have steam etc. in fuel cell portion 1192.Department of Communication Force 1142 can communicate and electric power acceptance with control part 1140, and connector 1144 can be inserted into the insertion section 1146 of control part 1140 sides via connector 1144.Control part 1140 is according to the difference of the object of fuel cell system 1100 supply capabilities of the present invention and can be replaced, and in the present embodiment, for the PC supply capability to notebook type, control part 1140 adopts the bottom surface with PC to place shape on the control part 1140.Because control part 1140 is heating at work also, therefore the side and above be provided with air scoop 1179a and 1179b.Like this,, perhaps adopt control part 1140 is supplied with object and removable formation according to electric power by making fuel cell portion 1192 and control part 1140 separable, can be with fuel cell portion 1192 generalizations of generating electricity, in various application.
(embodiment 3)
Figure 13 is the schematic top plan view of the formation of expression this fuel cell system 1200.Fuel cell system 1200 possesses the DMFC1210 that generates electricity by anode supply methanol aqueous solution or pure methyl alcohol, methanol tank 1220 with methanol aqueous solution that fills the above high concentration of 16mol/L or pure methyl alcohol, with the concentration that will be diluted to from the methyl alcohol of methanol tank 1220 about 0.1～2.0mol/L, to store the surge tank 1230 of the methanol aqueous solution of supplying with to DMFC1210, with the control part 1240 that power-converting device and auxiliary equipment class are controlled, with heat exchanger 1250, with one-sided suction-type Sirocco fan 1260 (representing among Figure 14) and basket 1270.
From the negative electrode air supply of air pump 1280 to DMFC1210, anode 124 is supplied with methanol aqueous solution from surge tank 1230 via liquor pump 1282.The 1284th, the air intake of air pump 1280, it is located at the central portion of this fuel cell 1200.The air of introducing from the air intake 1284 of air pump 1280 is admitted to the cathode inlet 1212 of DMFC1210 from air ejiction opening 1286.On the other hand, liquor pump 1282 is introduced the methanol aqueous solution that is diluted to 1.2mol/L left and right sides concentration from surge tank 1230 via liquid intake 1288, constitutes the structure of sending to the anode inlet 1214 of DMFC1210 from liquid spraying outlet 1290.
Figure 14 is the sectional schematic diagram of the A-A ' of Figure 13 to section.The same with embodiment 2, if the temperature of DMFC1210 approaches to 55 ℃, then in the present embodiment, be installed in one-sided suction-type Sirocco fan 1260 entrys into service of the bottom of fuel cell system 1200.Be provided with the air scoop of one-sided suction-type Sirocco fan 1260 in the rear side of fuel cell system 1200, on the position of going into DMFC1210, be provided with air scoop 1274, if therefore one-sided suction-type Sirocco fan 1260 entrys into service, the then air of introducing via one-sided suction-type Sirocco fan 1260 from the air scoop of the rear side that is located at fuel cell system 1200 cooling heat exchanger 250 at first.And a part is incorporated in the air pump 1280, and remaining circulation around DMFC1210 and DMFC1210 is carried out air cooling is with adjustment to 60 ± 3 of DMFC1210 ℃.As shown in figure 14, DMFC1210 is supported on the bottom support body 1294 that is made of the good resin of anti-methyl alcohol, and the bottom of DMFC1210 also can ventilating air.
Discharge from cathode outlet 1216 from air and generation water that the negative electrode of DMFC1210 is discharged, discharge from the anode export 1218 of DMFC1210 from methanol aqueous solution and carbon dioxide that the anode of DMFC1210 is discharged.Import to heat exchanger 1250 from the effluent of cathode outlet 1216 and anode export 1218 discharges, merging flow into surge tank 1230.The air of 70 ℃ of degree of discharging from DMFC1210, generate fully condensation heat exchanger 1250 such as water, methanol aqueous solution, carbon dioxide, therefore need not be from external complement moisture, can prevent that methyl alcohol from emitting and the amount of increasing consumption to the outside.
In the present embodiment, be that one-sided suction-type Sirocco fan 1260 is illustrated, but the kind of fan is not limited to this, can also use the axial flow fan as embodiment 2.But, under the situation of using axial flow fan, be necessary on the basket of the bottom of fuel cell system 1200, leg to be set and air scoop to be set in the position relative of basket bottom with axial flow fan.
Utilize present embodiment, not only the DMFC system that uses of the equipment that carries of the supply capabilities such as PC of subtend notebook type can also be to the fuel cell system of vehicle mounted, reduce the consumption electric power of auxiliary equipment class, and can carry out densification to system's formation by reducing component count.
Claims (19)
1. fuel cell system, possess the fuel cell that uses the liquid fuel generating, with the fuel supply mechanism of the described fuel cell of described liquid fuel supply, retrieve to supply with the thermal medium feed mechanism of the thermal medium that is used to cool off described ejected matter from the ejected matter recovering mechanism of the ejected matter of described fuel cell and to described ejected matter recovering mechanism, it is characterized in that:
Described thermal medium cools off described fuel cell.
2. fuel cell system as claimed in claim 1 is characterized in that:
Possess and be arranged on heat exchange department on the described ejected matter recovering mechanism, that carry out heat exchange between described thermal medium and the described ejected matter and between described liquid fuel that described fuel cell is supplied with and described ejected matter, carry out heat exchange.
3. fuel cell system as claimed in claim 1 is characterized in that:
Described thermal medium is the fluid that is present in described fuel cell system outside, is discharged to the outside of described fuel cell system after it cools off described fuel cell and described ejected matter.
4. fuel cell system as claimed in claim 2 is characterized in that:
Described thermal medium is the fluid that is present in described fuel cell system outside, is discharged to the outside of described fuel cell system after it cools off described fuel cell and described ejected matter.
5. fuel cell system as claimed in claim 1 is characterized in that:
Possess be arranged on described fuel cell system inside and be provided with described fuel cell and the fuel cell chamber of described ejected matter recovering mechanism and
Be arranged in the described fuel cell chamber, make thermal medium inflow portion that described thermal medium flows into to described fuel cell chamber and
The thermal medium outflow portion that is arranged in the described fuel cell chamber, described thermal medium is flowed out from described fuel cell chamber;
The described thermal medium that circulates in described fuel cell chamber only flows into and only flows out from described thermal medium outflow portion from described thermal medium inflow portion.
6. fuel cell system as claimed in claim 2 is characterized in that:
Possess be arranged on described fuel cell system inside and be provided with described fuel cell and the fuel cell chamber of described ejected matter recovering mechanism and
The thermal medium inflow portion that be arranged in the described fuel cell chamber, described thermal medium flows into to described fuel cell chamber and
The thermal medium outflow portion that is arranged in the described fuel cell chamber, described thermal medium is flowed out from described fuel cell chamber;
The described thermal medium that circulates in described fuel cell chamber only flows into and only flows out from described thermal medium outflow portion from described thermal medium inflow portion.
7. fuel cell system as claimed in claim 3 is characterized in that:
Possess be arranged on described fuel cell system inside and be provided with described fuel cell and the fuel cell chamber of described ejected matter recovering mechanism and
The thermal medium inflow portion that be arranged in the described fuel cell chamber, described thermal medium flows into to described fuel cell chamber and
The thermal medium outflow portion that is arranged in the described fuel cell chamber, described thermal medium is flowed out from described fuel cell chamber;
The described thermal medium that circulates in described fuel cell chamber only flows into and only flows out from described thermal medium outflow portion from described thermal medium inflow portion.
8. fuel cell system as claimed in claim 5 is characterized in that:
Described fuel cell and described thermal medium inflow portion dispose in the mode of adjacency.
9. fuel cell system as claimed in claim 6 is characterized in that:
Described fuel cell and described thermal medium inflow portion dispose in the mode of adjacency.
10. fuel cell system as claimed in claim 7 is characterized in that:
Described fuel cell and described thermal medium inflow portion dispose in the mode of adjacency.
11. fuel cell system as claimed in claim 6 is characterized in that:
Described heat exchange department and described thermal medium outflow portion dispose in the mode of adjacency.
12. fuel cell system as claimed in claim 9 is characterized in that:
Described heat exchange department and described thermal medium outflow portion dispose in the mode of adjacency.
13. fuel cell system as claimed in claim 1 is characterized in that:
Described fuel cell has polyhedral shape, and at least one face of described fuel cell disposes in the mode with the stream adjacency of described thermal medium.
14. a fuel cell system possesses and utilizes fuel cell that fuel and airborne oxygen generates electricity and to the air fed air feed mechanism of described fuel cell, it is characterized in that:
Possesses when being used for introducing air the circulation of air path that the air of described fuel cell system inside is discharged to the outside from described fuel cell system is outside;
The air intake of described air feed mechanism is located on the described circulation of air path.
15. fuel cell system as claimed in claim 14 is characterized in that:
Described fuel cell is located on the described circulation of air path.
16. fuel cell system as claimed in claim 14 is characterized in that:
Described fuel is liquid fuel.
17. fuel cell system as claimed in claim 15 is characterized in that:
Described fuel is liquid fuel.
18. fuel cell system as claimed in claim 14 is characterized in that:
Possess the heat exchanger that the effluent that makes air and discharge from described fuel cell carries out heat exchange,
Described heat exchanger is located on the described circulation of air path.
19. fuel cell system as claimed in claim 14 is characterized in that:
Have fuel cell portion that comprises described fuel cell and the control part of controlling described fuel cell,
Described fuel cell portion and described control part constitute in separable mode.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004233288A JP4401257B2 (en) | 2004-08-10 | 2004-08-10 | Fuel cell system |
| JP2004233288 | 2004-08-10 | ||
| JP2005032095 | 2005-02-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1734821A true CN1734821A (en) | 2006-02-15 |
| CN100338810C CN100338810C (en) | 2007-09-19 |
Family
ID=36031424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100914066A Expired - Fee Related CN100338810C (en) | 2004-08-10 | 2005-08-10 | Fuel cell system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4401257B2 (en) |
| CN (1) | CN100338810C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881936A (en) * | 2012-09-28 | 2013-01-16 | 引峰新能源科技（上海）有限公司 | Compact safety fuel cell system |
| CN103066310A (en) * | 2012-12-20 | 2013-04-24 | 华南理工大学 | Heat or flow management system used for passive type direct methanol fuel cell |
| CN106450561A (en) * | 2016-11-08 | 2017-02-22 | 常州博能新能源有限公司 | Temperature control system of power lithium battery |
| CN108475794A (en) * | 2016-01-23 | 2018-08-31 | 京瓷株式会社 | Fuel-cell device |
| WO2024055247A1 (en) * | 2022-09-15 | 2024-03-21 | 宁德时代新能源科技股份有限公司 | Thermal management component, box assembly, battery, and electric apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5094058B2 (en) | 2006-06-30 | 2012-12-12 | 三洋電機株式会社 | Power system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3849375B2 (en) * | 1999-11-18 | 2006-11-22 | 松下電器産業株式会社 | Combined heat and power unit |
| JP2002280006A (en) * | 2001-03-19 | 2002-09-27 | Osaka Gas Co Ltd | Exhaust heat recovery system for solid polymer fuel cell power generating facility |
| CN1234187C (en) * | 2002-08-19 | 2005-12-28 | 乐金电子(天津)电器有限公司 | Cooling system of fuel cell |
| JP3742053B2 (en) * | 2002-11-22 | 2006-02-01 | 株式会社東芝 | Fuel cell system |
-
2004
- 2004-08-10 JP JP2004233288A patent/JP4401257B2/en not_active Expired - Fee Related
-
2005
- 2005-08-10 CN CNB2005100914066A patent/CN100338810C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881936A (en) * | 2012-09-28 | 2013-01-16 | 引峰新能源科技（上海）有限公司 | Compact safety fuel cell system |
| CN102881936B (en) * | 2012-09-28 | 2014-12-17 | 引峰新能源科技（上海）有限公司 | Compact safety fuel cell system |
| CN103066310A (en) * | 2012-12-20 | 2013-04-24 | 华南理工大学 | Heat or flow management system used for passive type direct methanol fuel cell |
| CN103066310B (en) * | 2012-12-20 | 2015-04-22 | 华南理工大学 | Heat or flow management system used for passive type direct methanol fuel cell |
| CN108475794A (en) * | 2016-01-23 | 2018-08-31 | 京瓷株式会社 | Fuel-cell device |
| CN108475794B (en) * | 2016-01-23 | 2022-01-21 | 京瓷株式会社 | Fuel cell device |
| US11843139B2 (en) | 2016-01-23 | 2023-12-12 | Kyocera Corporation | Fuel cell apparatus |
| CN106450561A (en) * | 2016-11-08 | 2017-02-22 | 常州博能新能源有限公司 | Temperature control system of power lithium battery |
| WO2024055247A1 (en) * | 2022-09-15 | 2024-03-21 | 宁德时代新能源科技股份有限公司 | Thermal management component, box assembly, battery, and electric apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006054075A (en) | 2006-02-23 |
| JP4401257B2 (en) | 2010-01-20 |
| CN100338810C (en) | 2007-09-19 |
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