CN100546081C - Direct fuel liquid battery power-supply system and method for operation thereof - Google Patents
Direct fuel liquid battery power-supply system and method for operation thereof Download PDFInfo
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- CN100546081C CN100546081C CNB200710190630XA CN200710190630A CN100546081C CN 100546081 C CN100546081 C CN 100546081C CN B200710190630X A CNB200710190630X A CN B200710190630XA CN 200710190630 A CN200710190630 A CN 200710190630A CN 100546081 C CN100546081 C CN 100546081C
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- 238000007789 sealing Methods 0.000 claims abstract description 33
- 230000000295 complement effect Effects 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 29
- 239000007800 oxidant agent Substances 0.000 claims description 21
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- 238000002156 mixing Methods 0.000 claims description 14
- 238000013461 design Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 75
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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
A kind of direct fuel liquid battery power-supply system, it comprises fuel supply unit, high concentration liquid fuel reservoir wherein is the high concentration liquid fuel cassette, the high concentration liquid fuel cassette has a quick self-closing sealing plug, the quick self-closing sealing socket of it and miniature metering pump inlet pipe is complementary, when fuel cassette was extracted power-supply system, the spring sealed plug of the outlet of the spring sealed plug sealing fuel cassette of the sealing plug of fuel cassette, the sealing socket of miniature metering pump inlet pipe sealed miniature metering pump inlet pipe; When fuel cassette inserted power-supply system, the sealing top masthead of the sealing socket of miniature metering pump inlet pipe was opened the spring sealed plug of sealing plug and sealing socket, and fuel cassette is communicated with miniature measuring pump.Adopt the direct fuel liquid battery power-supply system of high concentration liquid fuel cassette device of the present invention, can change the high concentration liquid fuel cassette apace, and can not leak the poisonous liquid fuel in the high concentration liquid fuel cassette.
Description
Technical field
The present invention relates to direct fuel liquid battery.
Background technology
Fuel cell is a kind of electrochemical appliance that the chemical energy of fuel is directly changed into electric energy.Pollution-free during generating, noiselessness, and generating efficiency height, long service life, therefore in space flight, traffic, fields such as portable power source have a wide range of applications.Single fuel cell is made of anode, electrolyte membrance and negative electrode.Fuel is in anodic oxidation, and oxidant is in cathodic reduction, and the electronics that electrochemical reaction produces moves the generation electric energy in the orientation of external circuit.The voltage in fuel cell list pond is lower, several, tens even single ponds up to a hundred will be combined into battery pack usually and externally power.In addition, battery pack also will combine with auxiliary bodies such as fuel unit and air element, and this just needs the rational control strategy of a cover.Last these modules combine and constitute a power-supply system, use for extraneous.
In the last few years, various electronic product volumes were more and more littler, and this has higher requirement with regard to the integrated level that requires power-supply system.Traditional secondary cell for example Ni-MH battery and lithium ion battery can not satisfy the demand paces of battery product of new generation gradually, and people have invested sight the miniaturization of fuel cell.Though the fuel cell that uses hydrogen to act as a fuel had obtained to pay close attention to widely in the last few years, had especially obtained considerable progress in the research aspect the vehicle-mounted power.But aspect the small portable power supply, because carrying and storing of hydrogen is not easily to cause further reducing the volume of fuel cell system.And adopt liquid such as the energy density methyl alcohol higher, formic acid, sodium borohydride solution to act as a fuel than hydrogen, and can further improve the specific energy density of portable fuel battery, dwindle the volume of battery system.
Patent 3[CN 200610071075.4] a kind of direct methanol fuel cell system proposed.Main innovate point is the concentration that can adjust cell feed at any time according to the different demand in the external world and battery status, promptly utilize target temperature and at present the difference of temperature dynamically adjust the concentration of methyl alcohol, methanol feed concentration was high more when temperature differed big more.Along with the operation of battery, battery temperature is along with the heat that produces rises gradually, and methanol concentration is tending towards a definite value gradually when target temperature is near more, and last battery temperature reaches a stationary value.Can shorten the start-up time of battery by this method, reach the state of battery stable operation as early as possible.But this method might cause the methanol concentration of initial charge too high, especially crosses low and target temperature is set when higher when the battery context temperature, and when causing beginning easily almost is in a flash the direct contact electrode catalyst of pure methyl alcohol.This situation will be damaged fuel cell, not only may cause cell integrated poison deactivation, and be unfavorable for very much the long-time steady operation of membrane electrode assembly.
Patent 4[US 2006/0222923A1] introduced a kind of integrated direct methanol fuel cell system.This entire system is assembled in the airtight casing, has avoided the influence to battery system of external factor such as conditions such as temperature, vibration.The methyl alcohol of pure methyl alcohol and dilution places the top of battery pack to be positioned on the same plane, can make full use of the charging that is used for of gravity, and all is provided with transducer at each position, and system is very complicated.Therefore to be fit to power be the power-supply system of electric motor car etc. for example more than the hectowatt grade in this design.
Patent 5[CN 200710001822.1] reported a kind of direct methanol fuel cell system and method for operation thereof.Its feature mainly is to be about to out-of-work the time when battery system, gets rid of the methanol fuel in the battery pack, and the methyl alcohol by residual absorption on the discharge sacrificial electrode of self, reduces the amount of residual methanol in the battery pack.
Summary of the invention
The purpose of this invention is to provide a kind of portable direct fuel liquid battery power-supply system, this system can online refuelling box, battery pack turns round at higher temperature, realize that the output of battery pack high-performance and this system can make the fuel cell discontinuous operation, prolong the life-span of battery pack.
Technical scheme of the present invention is as follows:
A kind of direct fuel liquid battery power-supply system, it comprises:
Generator unit: pile comprises anode and negative electrode that at least one has the membrane electrode assembly of dielectric film and is positioned at the electrolytic film both sides;
Fuel supply unit: comprise mixing channel, be connected to above-mentioned generator unit, be used to mix, diluent liquid fuel, hold first liquid fuel after the dilution by fuel circulating pump; The high concentration liquid fuel reservoir is connected to mixing channel by miniature measuring pump, is used to hold second liquid fuel of the preceding high concentration of mixing channel dilution;
Oxidant feeding unit: comprise air pump (or air blast), be used for providing oxidant air to pile;
Control unit: comprise circuit module: comprise power management control electronic circuit, be used to manage control above-mentioned fuel circulating pump, miniature measuring pump and air pump; Stand-by power supply is used for starting fluid feeding unit and oxidant feeding unit, stores generator unit electricity energy and supply load electric energy; Temperature sensor is used to measure the temperature of pile and charging fuel; Fuel concentration sensor is used to measure the concentration of first liquid fuel,
Described high concentration liquid fuel reservoir is the high concentration liquid fuel cassette, the high concentration liquid fuel cassette has a quick self-closing sealing plug, the quick self-closing sealing socket of it and miniature metering pump inlet pipe is complementary, when the high concentration liquid fuel cassette was extracted direct fuel liquid battery power-supply system, the spring sealed plug of the outlet of the spring sealed plug sealing high concentration liquid fuel cassette of the sealing plug of high concentration liquid fuel cassette, the sealing socket of miniature metering pump inlet pipe sealed miniature metering pump inlet pipe; When the high concentration liquid fuel cassette inserted direct fuel liquid battery power-supply system, the sealing top masthead of the sealing socket of miniature metering pump inlet pipe was opened the spring sealed plug of sealing plug and sealing socket, and the high concentration liquid fuel cassette is communicated with miniature measuring pump.Adopt the direct fuel liquid battery power-supply system of high concentration liquid fuel cassette device of the present invention, can change the high concentration liquid fuel cassette apace, and can not leak the poisonous liquid fuel in the high concentration liquid fuel cassette.
Above-mentioned direct fuel liquid battery power-supply system, described fuel circulating pump through mini-channel heat exchanger, carries out heat exchange with first liquid fuel and heats earlier before being connected to above-mentioned generator unit, simultaneously, mini-channel heat exchanger cools the liquids and gases that generator unit flows out.
Above-mentioned direct fuel liquid battery power-supply system, described air pump is heated through mini-channel heat exchanger to the oxidant that pile provides.
Above-mentioned direct fuel liquid battery power-supply system, described circuit module also comprises power converting circuit.
Above-mentioned direct fuel liquid battery power-supply system, also comprise condenser, separating and to reclaim the water that pile is discharged, and water that will part turns back to mixing channel to condenser with the condensation of pile effluent air, in order to the liquid fuel of diluting high-concentration, gas is as exhaust emissions.
Above-mentioned direct fuel liquid battery power-supply system also comprises gas separator, and in order to fuel that pile is flowed out and the gas separations in the product, gas is as exhaust emissions, and liquid acts as a fuel and returns mixing channel.
Above-mentioned direct fuel liquid battery power-supply system also comprises exhaust gas processing device, becomes the innocuous gas discharging in order to the harmful vent gas treatment with the pile discharging.
A kind of method of operation of above-mentioned direct fuel liquid battery power-supply system, it is by the overall control strategy flowchart operation control of direct fuel liquid battery power-supply system shown in Figure 4, after main circuit is activated, system utilizes the conveying equipment of stand-by power supply starting fluid pump and oxidant, fuel cell begins externally to discharge, control unit is at first measured the first liquid fuel concentration C (j) after the dilution by concentration sensor and is compared with initial set point C (s), by miniature measuring pump concentration is brought up to the suitable value of C (s) then, monitor afterwards when fuel cell terminal voltage V (c) is higher than setting voltage V (s) and will charge stand-by power supply, externally power supply simultaneously, control unit is also monitored stack temperature Te (c) and is compared with design temperature Te (s), when stack temperature is lower than design temperature, do not start condenser fan, the heat that makes reaction produce all is used for the lifting of system temperature, when being higher than design temperature, battery temperature starts condenser fan, reclaim the water in the cathode side gas, in addition, in flow process
In timer settings a time T, its main effect is the time of system's discontinuous operation, one circulates at first that T is reset to 0, then behind the elapsed time T, fuel cell moment stops discharge and has a rest, the external electric current output of system's this moment is finished by stand-by power supply, when the time of having a rest reaches T2, system restart fuel cell battery group is externally discharged, finish a circulation, power-supply system is jumped out above-mentioned logic loops when receiving the signal of unloaded loads, the disconnection fuel cell pile is connected with main circuit, stops the supply of fuel and oxidant and the running of condenser fan then.
Direct fuel liquid battery power-supply system of the present invention, it is the fuel cell power system that can use liquid fuels such as methyl alcohol, formic acid, sodium borohydride.It can realize the online replacing of fuel cassette in this system, and the leakage of no liquid fuel; The tail gas that utilizes cell cathode to export adds the liquid fuel of hot feed, realizes that the heat of battery pack stores, and makes battery pack be operated in higher temperature, thereby realizes the high performance output of battery pack; Aspect control, by single-chip microcomputer effective coordination control fuel cell and reserve battery, realized the discontinuous operation of fuel cell, prevent that counter voltage appears in single battery in the fuel battery.Direct fuel liquid battery power-supply system of the present invention is easy to carry.
Description of drawings
Fig. 1 is a direct fuel liquid battery power-supply system schematic diagram of the present invention.
Fig. 2 is the inner connection diagram of high concentration fuel box.
Fig. 3 is the quick self-closing interface partial enlarged drawing of high concentration fuel box.
Fig. 4 is the overall control strategy flow chart of fuel cell power system.
Fig. 5 is the profile shaft side figure of the direct methyl alcohol power-supply system of embodiment one, and Fig. 5 a is a front schematic view, and Fig. 5 b is a schematic rear view.
Fig. 6 is embodiment two fuel cell power systems and notebook computer joint-trial schematic diagram.
Fig. 7 is variable power figure in the test process among Fig. 6.
Fig. 8 is that embodiment three fuel cell power systems are as multi-functional power supply schematic diagram.
Fig. 9 is test result figure among Fig. 8, and wherein 1 disconnects moment for pile; 2 is pile voltage; 3 is AC-battery power source voltage; 4 is the power-supply system output voltage.
Embodiment
Its principle of power-supply system of the present invention comprises as shown in Figure 1: fuel battery main body, and the supply of fuel part, oxidant supply section and control unit part, the machine entity is as shown in Figure 5.
Second liquid fuel of high concentration enters mixing channel 8 from high concentration liquid fuel cassette 9s through miniature measuring pump 10 and mixes formation first liquid fuel with low concentration fuel, under the effect of fuel circulating pump 11, carry out preheating then, and then enter pile 1 through filter 17 (being mainly cation exchange resin) by mini-channel heat exchanger 3; Air then at first passes through filter 13 and air pump or air blast 14, also carries out preheating by mini-channel heat exchanger 3, also enters fuel cell pile 1.Fuel and oxidant react on membrane electrode assembly in fuel cell, produce electricity and hot.The fuel of pile outlet and the oxidant micro channel heat exchanger 3 of all flowing through reclaims heat wherein.The water of oxidant stream in condenser 5 noncondensing gas is recovered to mixing channel 8 through separator 6 back water afterwards; Fuel then directly returns mixing channel 8 through gas separator 7.Separator 6 and 7 gas separated all need to discharge clean tail gas again through residual fuel in 18 decomposition gases of vent gas treatment pond.
High concentration liquid fuel cassette 9 directly is connected with miniature measuring pump by the mechanism of a fast insert-pull, its structure is seen Fig. 2, Fig. 3, when state that high concentration liquid fuel cassette 9 is extracted, Packing spring 8c and 9b are in impaction state respectively, seal up the fuel of both sides by sealing O circle 8a and packed-piston 9c; And when inserting high concentration fuel box 9, the sealing push rod 8b of front end pushes the sealing O circle 8a and the packed-piston 9c of the left and right sides open, and the both sides liquid phase connects, and gives battery system by miniature measuring pump 10 with the supply of fuel of high concentration.The sealing O circle 9a in the outside then plays fuel to extraneous sealing.Plug self-closing sealing system fast by this, make power-supply system can be implemented in more fresh fuel of line.And time weak point in the process of changing, and there is not any type of leakage.
The electricity that fuel cell sends does not directly output to load but will pass through circuit unit 16, exports by its built-in single-chip microcomputer management fuel cell and stand-by power supply again.
Circuit unit also comprises AC-battery power source and circuit 16a (comprising reserve battery) thereof, and power converting circuit 16b, power management control electronic circuit 16c.16c is by the temperature of temperature sensor 2 and 15 measurement battery pack and charging fuel, and the concentration of fuel concentration sensor 12 measurement fuel, and (with reference to Fig. 4) controls battery system by certain logical operation.The transducer 12 of fuel concentration can adopt the microtubule transducer, ultrasonic sensor, semiconductor absorption transducer or electrochemical sensor etc.
The direct overall control strategy flow process of fuel liquid battery power-supply system is seen shown in Figure 4, and after main circuit was activated, system utilized the conveying equipment of stand-by power supply starting fluid pump and oxidant, and fuel cell begins externally to discharge.Control unit is at first measured the fuel concentration C (j) after the dilution by concentration sensor and is compared with initial set point C (s), by fuel-metering pump concentration is brought up to the suitable value of C (s) then.Monitor afterwards when fuel cell terminal voltage V (c) is higher than setting voltage V (s) and will charge, simultaneously externally power supply stand-by power supply.Control unit also needs to monitor stack temperature Te (c) and compares with design temperature Te (s), when stack temperature is lower than design temperature, does not start condenser fan, and the heat that makes reaction produce all is used for the lifting of system temperature.Have only when battery temperature is higher than design temperature, to start condenser fan, reclaim the water in the cathode side gas.In addition, in flow chart timer settings a time T, its main effect is the time of system's discontinuous operation.One circulates at first that T is reset to 0, and then behind the elapsed time T, fuel cell moment stops discharge and has a rest.The external electric current output of system's this moment is finished by stand-by power supply.When the time of having a rest reached T2, system restart fuel cell battery group was externally discharged, and finishes a circulation.Power-supply system is jumped out above-mentioned logic loops when receiving the signal of unloaded loads, the disconnection fuel cell pile is connected with main circuit, stops the supply of fuel and oxidant and the running of condenser fan then.
Its second liquid fuel adopts methyl alcohol to act as a fuel, and pile 1 is 25cm by 30 monocell areas
2Constitute, bipolar plates adopts the high purity graphite plate.Reserve battery is the lithium battery of the 1200mAh of 3 joint series connection.
Pile is positioned at the top of system, and high concentration liquid fuel cassette and air supply system are all in the bottom.Second liquid fuel of high concentration liquid fuel cassette adopts 100% methanol feeding, and the concentration of controlling methyl alcohol by the transducer of microtubule technology enters pile; Air after the filtration is through entering pile after the micro-channel heat exchanger.Separator 6 and gas separator 7 are realized by a separator in the present embodiment.Methanol solution after the separation returns in the mixing channel 8, and the methyl alcohol in the gas is discharged to the system outside after focusing on through exhaust gas treating device 13.
The methanol concentration of first liquid fuel is controlled at about 0.25M, and battery temperature is set in 65 ℃.Can stablize through the actual external output of test battery system and to reach 20 watts.
Direct methanol fuel cell power-supply system of the present invention and notebook computer joint test, as shown in Figure 6.A plurality of digital voltmeters 23 and ammeter 22 are connected in the fuel cell power system 19, measure fuel cell output respectively, the power that reserve battery output and notebook computer 24 consume.Their data are monitored at any time by a logger computer 21.Because notebook computer 24 belongs to wide-range voltage input load (9-22V), thus power converting circuit do not passed through after pile 1 and reserve battery mix in the native system, but switch to directly externally output shelves, reduced the power consumption of circuit self.
Methanol concentration is controlled at about 0.5M in second embodiment, and battery temperature is set in 85 ℃, and the peak power of fuel cell can reach more than the 35W.The startup stage that front end being, the power consumption of notebook computer is mainly supplied with by stand-by power supply, in case after the fuel cell startup then mainly power by fuel cell, and charge to stand-by power supply.In nearly 12 hours test process, by the coordination control various piece of control unit, power-supply system can provide the power supply of the output assurance notebook computer about stable 25W.Fig. 7 schemes over time for the power of each parts of system in the test process, and wherein A is the pile power output; B is the power consumption that notebook computer is carried out general operation; C is the AC-battery power source power output.
Embodiment 3.
Direct fuel liquid battery power-supply system of the present invention is as multi-functional power supply (see figure 8).For the constant voltage input load, must switch to externally output again after pile 1 and reserve battery mix in the system through power converting circuit 16b.Power-supply system 19 is through setting the removable power supply as 12V or 3.3V constant voltage load 20 behind the voltage transformation.
Output voltage is set at 12V, and output current is set at 0.5A.Methanol concentration is controlled at that (see Fig. 8, wherein 21 is logger computer in nearly 10 hours test process of 0.25M in the present embodiment; 22 is ammeter; 23 is voltmeter), pile 1 voltage is stabilized in about 18.5V, because power output is less, the pile output voltage is higher, is all powered by pile 1 during pile 1 is communicated with; All by reserve battery 16a power supply, discharge moment reserve battery 16a voltage descends to some extent during the open circuit.The voltage of each parts of system is seen Fig. 9 over time in the test process.
Claims (9)
1. direct fuel liquid battery power-supply system, it comprises:
Generator unit: pile (1) comprises anode and negative electrode that at least one has the membrane electrode assembly of dielectric film and is positioned at the electrolytic film both sides;
Fuel supply unit: comprise mixing channel (8), be connected to above-mentioned generator unit by fuel circulating pump (11), be used to mix, diluent liquid fuel and hold dilution after first liquid fuel; The high concentration liquid fuel reservoir is connected to mixing channel (8) by miniature measuring pump (10), is used to hold second liquid fuel of the preceding high concentration of mixing channel dilution;
Oxidant feeding unit: comprise air pump or air blast (14), be used for providing oxidant to pile (1);
Control unit: comprise circuit module (16), circuit module (16) comprises power management control electronic circuit (16c), is used to manage control above-mentioned fuel circulating pump (11), miniature measuring pump (10) and air pump (14); Stand-by power supply is used for starting fluid feeding unit and oxidant feeding unit, stores generator unit electricity energy and supply load electric energy; Temperature sensor (2,15) is used to measure the temperature of pile and charging fuel; Fuel concentration sensor (12) is used to measure the concentration of first liquid fuel, it is characterized in that:
Described high concentration liquid fuel reservoir is high concentration liquid fuel cassette (9), high concentration liquid fuel cassette (9) has a quick self-closing sealing plug, the quick self-closing sealing socket of it and miniature measuring pump (10) inlet tube is complementary, when high concentration liquid fuel cassette (9) is extracted direct fuel liquid battery power-supply system, the outlet of the spring sealed plug sealing high concentration liquid fuel cassette (9) of the sealing plug of high concentration liquid fuel cassette (9), the spring sealed plug of the sealing socket of miniature measuring pump (10) inlet tube seals miniature measuring pump (10) inlet tube; When high concentration liquid fuel cassette (9) inserts direct fuel liquid battery power-supply system, the sealing push rod (8b) of the sealing socket of miniature measuring pump (10) inlet tube backs down the spring sealed plug of sealing plug and sealing socket, and high concentration liquid fuel cassette (9) is communicated with miniature measuring pump (10).
2. direct fuel liquid battery power-supply system according to claim 1, it is characterized in that: described fuel circulating pump (11) is before being connected to described generator unit, earlier through mini-channel heat exchanger (3), first liquid fuel is carried out heat exchange heats, simultaneously, mini-channel heat exchanger (3) cools the liquids and gases that generator unit flows out.
3. direct fuel liquid battery power-supply system according to claim 1 is characterized in that: the oxidant that described air pump (14) provides for pile (1) is heated through mini-channel heat exchanger (3).
4. direct fuel liquid battery power-supply system according to claim 1, it is characterized in that: described circuit module also comprises power converting circuit.
5. direct fuel liquid battery power-supply system according to claim 1, it is characterized in that: also comprise condenser (5), condenser (5) is discharged pile (1) effluent air condensation with separation and recovery pile (1) water, and the water of inciting somebody to action part turns back to mixing channel (8), in order to second liquid fuel of diluting high-concentration, gas is as exhaust emissions.
6. direct fuel liquid battery power-supply system according to claim 1, it is characterized in that: also comprise gas separator (7), in order to fuel that pile (1) is flowed out and the gas separations in the product, gas is as exhaust emissions, and liquid acts as a fuel and returns mixing channel (8).
7. direct fuel liquid battery power-supply system according to claim 1 is characterized in that: also comprise exhaust gas processing device (18), become the innocuous gas discharging in order to the harmful vent gas treatment with pile (1) discharging.
8. direct fuel liquid battery power-supply system according to claim 1 is characterized in that: the oxidant that described oxidant feeding unit provides is an air.
9. the method for operation of the described direct fuel liquid battery power-supply system of claim 1, it is characterized in that: after main circuit is activated, system utilizes the conveying equipment of stand-by power supply starting fluid pump and oxidant, fuel cell begins externally to discharge, control unit is at first measured the first liquid fuel concentration C (j) after the dilution by concentration sensor and is compared with initial set point C (s), by miniature measuring pump concentration is brought up to C (s) then, monitor afterwards when fuel cell terminal voltage V (c) is higher than setting voltage V (s) and will charge stand-by power supply, externally power supply simultaneously, control unit is also monitored stack temperature Te (c) and is compared with design temperature Te (s), when stack temperature is lower than design temperature, do not start condenser fan, the heat that makes reaction produce all is used for the lifting of system temperature, when being higher than design temperature, battery temperature starts condenser fan, reclaim the water in the cathode side gas, in addition, in flow chart timer settings a time T, its main effect is the time of system's discontinuous operation, one circulates at first that T is reset to 0, then behind the elapsed time T, fuel cell moment stops discharge and has a rest, the external electric current output of system's this moment is finished by stand-by power supply, when the time of having a rest reaches T2, system restart fuel cell battery group is externally discharged, finish a circulation, power-supply system is when receiving the signal of unloaded loads, jump out above-mentioned logic loops, the disconnection fuel cell pile is connected with main circuit, stops the supply of fuel and oxidant and the running of condenser fan then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710190630XA CN100546081C (en) | 2007-11-27 | 2007-11-27 | Direct fuel liquid battery power-supply system and method for operation thereof |
Applications Claiming Priority (1)
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| CN101740796B (en) * | 2009-12-17 | 2011-11-16 | 哈尔滨工程大学 | Closed-cycle fuel cell system suitable for AUV |
| CN102468510A (en) * | 2010-11-18 | 2012-05-23 | 北京科技大学 | Indirect methanol fuel cell device based on heteropoly compound energy storage |
| CN102522585B (en) * | 2012-01-05 | 2014-11-26 | 中国科学院长春应用化学研究所 | Direct alcohol fuel cell power generation system |
| CN103066309B (en) * | 2012-11-30 | 2014-12-24 | 孙公权 | Fuel tank for direct liquid fuel battery system with self-closing interface |
| CN106981166A (en) * | 2017-05-25 | 2017-07-25 | 欧阳培光 | A kind of network intelligence photoelectric smoke detecting alarm control system and its control method |
| CN109873184B (en) * | 2017-12-05 | 2021-04-27 | 中国科学院大连化学物理研究所 | Liquid fuel cell stack starting control method |
| CN114639850B (en) * | 2020-12-16 | 2024-03-12 | 中国科学院大连化学物理研究所 | Concentration optimization control method for liquid fuel cell |
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