CN209496958U - A kind of fuel cell system of continual and steady power output - Google Patents
A kind of fuel cell system of continual and steady power output Download PDFInfo
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- CN209496958U CN209496958U CN201920391166.9U CN201920391166U CN209496958U CN 209496958 U CN209496958 U CN 209496958U CN 201920391166 U CN201920391166 U CN 201920391166U CN 209496958 U CN209496958 U CN 209496958U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses a kind of fuel cell system of continual and steady power output, including electricity generation module, including fuel cell, is equipped with catalyst in the fuel cell；The catalyst activation module, including IGBT and IGBT drive control protect circuit；Main control module, including governor circuit and charging and discharging module, including super capacitor and charging and discharging control circuit, the charging and discharging control circuit is connect with governor circuit, the charging and discharging control circuit carries out charge and discharge control to super capacitor according to the master signal that governor circuit issues, and adjusts charging and discharging currents according to master signal.One end of the load circuit and the anode of fuel cell connect, and the other end of the load circuit and the cathode of fuel cell connect, and the charging and discharging module and IGBT are in parallel with load circuit respectively.The utility model can effectively improve the power generation performance of fuel cell system and using continual and steady power output as load supplying, extend the service life of load.
Description
Technical field
The utility model relates to generating equipment technical field, in particular to a kind of fuel cell of continual and steady power output
System.
Background technique
Hydrogen is a kind of one of 21 century optimal energy, coal, gasoline and the hydrogen for identical weight of burning the case where
Under, the energy that hydrogen generates is most, and the product that it burns is water, without lime-ash and exhaust gas, is not polluted the environment；And coal and
The mainly CO2 and SO2 that oil combustion generates, can generate greenhouse effects and acid rain respectively.Coal and petroleum reserves are limited,
And unique product is water after hydrogen burning, is the very environmentally friendly energy.
With the development of technology, hydrogen in the industry using more and more extensive, such as ammonia synthesizing industry and petroleum refinement
Add hydrogen industry etc., in addition to this, hydrogen can also be used to generate electricity, and with epoch progress, emerge batch of fuel battery, the fuel
Battery occurs electrochemical reaction with the oxygen in air for hydrogen and produces electricl energy, as shown in Figure 1, in the cathode of fuel cell 4:
2H2→4H++4e-, H2Two protons and two electronics are split into, proton passes through proton exchange membrane 42 and enters anode, and electronics is through outer
Section load enters anode, in the anode of fuel cell: O2+4e-+4H+→2H2O, proton, electronics and O2It recombines to be formed
H2O, and in general, being to need to improve reaction speed under the catalyst in proton exchange membrane 42 in this reaction process
Rate.Since the catalyst in the anode of fuel cell 4 in proton exchange membrane 42 can be contacted with oxygen, in this way it is easy catalyst
Oxide is generated with oxygen and loses the activity of catalyst, and the power generation performance of fuel cell 4 is caused decline, reduction fuel cell 4
Service life.
For this problem, utility model people proposes a kind of fuel cell system for improving power generation performance, the fuel cell
Catalyst activation module 2 is equipped in system, the catalyst activation module 2 can make fuel cell 4 during activation of catalyst
Short circuit occurs between anode and cathode, so that 42 moment of proton exchange membrane in fuel cell 4 obtains high current, to make proton
Oxide in the catalyst layer of exchange membrane 42 is reduced again activates into catalyst with this, i.e., described negative during activation of catalyst
It carries 14 and is in off state, and the time of activation of catalyst is very short, and often, will lead to the time at one end of load 14 in this way
It does not stop conjunction inside, load 14 can so be easily damaged, reduce the service life of load 14.
Utility model content
The technical problems to be solved in the utility model is in view of the deficiency of the prior art, to provide a kind of continue surely
Determine the fuel cell system of power output, the power generation performance of fuel cell system can be effectively improved and with continual and steady
Power output is load supplying, reduces the probability of load damage, extends the service life of load.
In order to solve the above technical problems, the technical solution of the utility model is:
A kind of fuel cell system of continual and steady power output, including
Electricity generation module, including fuel cell, oxygen generation electrochemistry of the fuel cell in hydrogen and air are anti-
It should produce electricl energy, generated electric energy is load circuit power supply；The fuel cell includes multiple reaction piles, the reaction electricity
Heap includes hydrogen transfer passage and air delivery passage, and proton exchange is equipped between hydrogen transfer passage and air delivery passage
Film, catalyst is contained in the proton exchange membrane, and the catalyst is used to accelerate the electrification between the oxygen in hydrogen and air
Learn reaction rate；
Catalyst activation module, for providing instantaneous large-current for fuel cell to activate the catalyst in fuel cell,
Circuit is protected including IGBT and IGBT drive control；
Main control module, for controlling the work of electricity generation module, catalyst activation module and charging and discharging module, including master control
Circuit；
Charging and discharging module for storing the electric energy of fuel cell generation, and is load supplying during activation of catalyst,
Including super capacitor and charging and discharging control circuit, the charging and discharging control circuit is connect with governor circuit, and the charging is put
Electric control circuit carries out charge and discharge control to super capacitor according to the master signal that governor circuit issues, and is adjusted according to master signal
Charging and discharging currents；
One end of the load circuit and the anode of fuel cell connect, the other end and fuel cell of the load circuit
Cathode connection, the charging and discharging module and IGBT are in parallel with load circuit respectively, the collector of the IGBT respectively with combustion
Expect the anode connection of battery, the emitter of the IGBT connect with the cathode of fuel cell respectively, the gate pole of the IGBT and
IGBE drive control protects circuit connection, and the IGBE drive control protection circuit is connect with governor circuit, the charging and discharging
Control circuit one end is connect with fuel cell anode, and the charging and discharging control circuit other end is connect with super capacitor anode,
The cathode of the super capacitor cathode and fuel cell connects.
As a preferred embodiment, the fuel cell system of the continual and steady power output further includes for fuel is electric
The voltage of pond output is converted into the DC conversion modules of certain voltage value, the sides of the DC conversion modules and fuel cell
Both ends connection, the other side of the DC conversion modules and the both ends of load circuit connect.
As a preferred embodiment, the load circuit includes load and switchs, one end of the switch and fuel cell
Anode connection, one end of the other end of the switch and load connects, the other end of the load and the cathode of fuel cell
Connection.
As a preferred embodiment, the electricity generation module further includes positive plate and negative plate, the one of hydrogen transfer passage
Side, proton exchange membrane are electrically connected with film anode strip；In the side of air delivery passage, proton exchange membrane is electrically connected with film yin
Pole piece；The positive plate is electrically connected with the film cathode sheets reacted in pile, the negative plate and the film anode reacted in pile
Piece is electrically connected.
As a preferred embodiment, the electricity generation module further includes hydrogen gas pipeline, lose heart pipeline and exhaust pipe, institute
It states hydrogen gas pipeline to be connected to hydrogen transfer passage, the discouraged pipeline and exhaust pipe are connected to outside air, described
Multiple air inlets are offered in air delivery passage, the hydrogen enters hydrogen transfer passage from hydrogen gas pipeline,
Under catalyst in proton exchange membrane, hydrogen generates Hydrogen Proton and negative electron, the Hydrogen Proton are arrived by proton exchange membrane
Up to air delivery passage, the negative electron reaches air delivery passage after load circuit or IGBT, and air is from air inlet
Into air delivery passage, the oxygen reaction in Hydrogen Proton, negative electron and air generates water vapour, water vapour and remaining unreacted
Hydrogen be discharged from exhaust pipe.
As a preferred embodiment, the electricity generation module further includes gas transmission solenoid valve, and the gas transmission solenoid valve is installed on hydrogen
The on-off of hydrogen gas pipeline is controlled on gas gas pipeline.
As a preferred embodiment, the electricity generation module further includes the solenoid valve that loses heart, and the discouraged solenoid valve, which is set to, to lose heart
On pipeline, and the discouraged solenoid valve is set to the front end of gas transmission solenoid valve, so that hydrogen is in hydrogen gas pipeline superpressure through letting out
Feed channel is released.
As a preferred embodiment, the electricity generation module further includes exhaust solenoid valve, and the exhaust solenoid valve is installed on row
The on-off of exhaust pipe is controlled in feed channel.
As a preferred embodiment, the electricity generation module further includes airstrainer, and the airstrainer is set to fuel
The side of battery.
As a preferred embodiment, the electricity generation module further includes plenum fan, and the plenum fan is set to fuel cell
The other side, air is sent into air delivery passage from air inlet after airstrainer, and taken away by the plenum fan
React the partial heat that pile reaction generates.
The beneficial effects of the utility model are: passing through the cooperation of super capacitor and charging and discharging control circuit, make this fuel
Battery system reduces the damage probability of load, extends the service life of load using continual and steady power output as load supplying；It is logical
The cooperation for crossing IGBT and IGBT drive control protection circuit can impose greatly the catalyst in the proton exchange membrane in fuel cell
Electric current promotes the ingredient being oxidized in catalyst to be reduced again, with this activated catalyst, so as to improve fuel cell system
Power generation performance, can more extend the service life of fuel cell system；Pass through the conversion of DC conversion modules, fuel cell system
It can facilitate the damage probability for reducing load using certain output voltage values as load supplying, extend the service life of load；It supplies gas
On the one hand air can be sent into air delivery passage from air inlet port by the setting of fan, on the other hand can take away fuel cell again
Heat caused by the electrochemical reaction of interior generation, to keep fuel cell operation more stable, effectively prolongs the effect of playing cooling
The service life of long fuel cell.
Detailed description of the invention
Fig. 1 is the electrochemical reaction schematic diagram occurred in fuel cell；
Fig. 2 is the embodiment of the utility model and the connection schematic diagram of load circuit；
Fig. 3 is the structural schematic diagram of the electricity generation module of the embodiment of the utility model；
Fig. 4 is the method flow diagram of the continual and steady power output of the utility model；
Fig. 5 is the method flow diagram of the continual and steady power output of another kind of the utility model；
Fig. 6 be the utility model activation of catalyst during curent change figure in fuel cell；
Fig. 7 is the comparison diagram of fuel cell output power, bearing power and Capacitance Power in different time period.
In figure: 1- electricity generation module, 2- catalyst activation module, 3- main control module, 4- fuel cell, 41- air delivery are logical
Road, 42- proton exchange membrane, 43- hydrogen transfer passage, 44- air inlet, 5-IGBT, 6-IGBT drive control protect circuit,
7- charging and discharging module, 8- super capacitor, 9- airstrainer, 10- charging and discharging control circuit, 11- governor circuit, 12- are negative
Carrying circuit, 13- switch, 14- load, 15- hydrogen gas pipeline, 16- loses heart pipeline, 17- exhaust pipe, 18- gas transmission solenoid valve,
19- loses heart solenoid valve, 20- exhaust solenoid valve, 21- plenum fan, 22- DC conversion modules.
Specific embodiment
The structural principle of the utility model and working principle are described in further detail with reference to the accompanying drawing.
Fuel cell system described in the utility model is illustrated in conjunction with Fig. 1 to Fig. 3.
A kind of fuel cell system of continual and steady power output, including
For the oxygen in hydrogen and air electrochemistry occurs for electricity generation module 1, including fuel cell 4, the fuel cell 4
Reaction produces electricl energy, and generated electric energy is the power supply of load circuit 12；The fuel cell 4 includes 66 reaction piles, described
Reacting pile includes hydrogen transfer passage 43 and air delivery passage 41, between hydrogen transfer passage 43 and air delivery passage 41
Equipped with proton exchange membrane 42, catalyst is contained in the proton exchange membrane 42, the catalyst is for accelerating in hydrogen and air
Oxygen between electrochemical reaction speed；
Catalyst activation module 2, for providing instantaneous large-current for fuel cell 4 to activate the catalysis in fuel cell 4
Agent, including IGBT5 and IGBT drive control protect circuit 6；
Main control module 3, for controlling the work of electricity generation module 1, catalyst activation module 2 and charging and discharging module 7, including
Governor circuit 11；
Charging and discharging module 7 is load 14 for storing the electric energy of the generation of fuel cell 4, and during activation of catalyst
Power supply, including super capacitor 8 and charging and discharging control circuit 10, the charging and discharging control circuit are connect with governor circuit, institute
It states charging and discharging control circuit and charge and discharge control is carried out to super capacitor according to the master signal that governor circuit issues, according to master control
Signal adjusts charging and discharging currents；
One end of the load circuit 12 is connect with the anode of fuel cell 4, the other end of the load circuit 12 and combustion
Expect the cathode connection of battery 4, the charging and discharging module 7 and IGBT5 are in parallel with load circuit 12 respectively, the collection of the IGBT5
Electrode is connect with the anode of fuel cell 4 respectively, and the emitter of the IGBT5 is connect with the cathode of fuel cell 4 respectively, described
The gate pole and IGBE drive control of IGBT5 protects circuit connection, and the IGBE drive control protection circuit and governor circuit 11 connect
It connects, described 10 one end of charging and discharging control circuit is connect with 4 anode of fuel cell, 10 other end of charging and discharging control circuit
It is connect with 8 anode of super capacitor, 8 cathode of super capacitor is connect with the cathode of fuel cell 4.
As a preferred embodiment, the fuel cell system further includes the voltage conversion for exporting fuel cell 4
At the DC conversion modules 22 of certain voltage value, the side of the DC conversion modules 22 is connect with the both ends of fuel cell 4, institute
The other side for stating DC conversion modules 22 is connect with the both ends of load circuit 12.
In general, when operating normally, the output voltage values of fuel cell 4 are 42-66V, by DC conversion modules 22
After conversion, the output voltage values of fuel cell system are 48V, just can be so that load 14 is supplied with certain output voltage values
Electricity facilitates the damage probability for reducing load 14, extends the service life of fuel cell 4.
As a preferred embodiment, the load circuit 12 includes load 14 and switch 13, one end of the switch 13 and
The anode connection of fuel cell 4, the other end of the switch 13 are connect with one end of load 14, it is described load 14 the other end and
The cathode of fuel cell 4 connects.The load 14 is not limited to one, can be it is multiple, it is multiple negative when load 14 is multiple
It carries and connects between 14, the load 14 is DC load 14.
As a preferred embodiment, the electricity generation module 1 further includes positive plate and negative plate, in hydrogen transfer passage 43
Side, proton exchange membrane 42 are electrically connected with film anode strip；In the side of air delivery passage 41, proton exchange membrane 42 electrically connects
It is connected to film cathode sheets；The positive plate is electrically connected with the film cathode sheets reacted in pile, the negative plate with react in pile
Film anode strip be electrically connected.
As a preferred embodiment, the electricity generation module 1 further includes hydrogen gas pipeline 15, lose heart pipeline 16 and exhaust pipe
Road 17, the hydrogen gas pipeline 15 are connected to hydrogen transfer passage 43, and the discouraged pipeline 16 and exhaust pipe 17 are and outside
Boundary's air communication, offers multiple air inlets 44 in the air delivery passage 41, and the hydrogen is from hydrogen gas pipeline
15 enter hydrogen transfer passage 43, and under the catalyst in proton exchange membrane 42, hydrogen generates Hydrogen Proton and negative electron, institute
It states Hydrogen Proton and air delivery passage 41 is reached by proton exchange membrane 42, the negative electron arrives after load circuit 12 or IGBT5
Up to air delivery passage 41, air is from the entrance air delivery passage 41 of air inlet 44, Hydrogen Proton, negative electron and air
Oxygen reaction generates water vapour, and water vapour and remaining unreacted hydrogen are discharged from exhaust pipe 17.
As a preferred embodiment, the electricity generation module 1 further includes gas transmission solenoid valve 18, the solenoid valve 19 that loses heart, exhaust electricity
Magnet valve 20, airstrainer 9 and plenum fan 21, the gas transmission solenoid valve 18 are installed on hydrogen gas pipeline 15 to control hydrogen
The on-off of gas gas pipeline 15, the discouraged solenoid valve 19 is set to the pipeline 16 that loses heart, and the discouraged solenoid valve 19 is set to gas transmission
The front end of solenoid valve 18, so that hydrogen is lost heart in hydrogen 15 superpressure of gas pipeline, pipeline 16 is released；The exhaust solenoid valve
20 are installed on the on-off that exhaust pipe 17 is controlled on exhaust pipe 17, and the airstrainer 9 is set to the one of fuel cell 4
Side, the plenum fan 21 be set to fuel cell 4 the other side, the plenum fan 21 by air after airstrainer 9 from
Air inlet 44 is sent into air delivery passage 41, and takes away the partial heat that reaction pile reaction generates.
As described in Figure 4, a kind of method of continual and steady power output is based on fuel cell system as described above, method packet
Include following steps:
1) Xiang Fanying pile input air: starting electricity generation module 1, starting plenum fan 21 make air through air inlet 44
Into the air delivery passage 41 of fuel cell 4；
2) purification reaction pile: it is defeated that gas transmission solenoid valve 18 opens the hydrogen for making hydrogen enter fuel cell 4 through gas pipeline
Channel 43 is sent, while the solenoid valve 19 that loses heart opens discouraged 16 row of pipeline of gas warp in the hydrogen transfer passage 43 for making fuel cell 4
Out, to achieve the purpose that purification reaction pile；
In general, the time of purification reaction pile is 1-5s, the preferred time of purification reaction pile is 3s.
The effect of purification reaction pile: since purity requirement of the fuel cell 4 to hydrogen is high, hydrogen in this fuel cell 4
Gas purity need to reach 99.99%, and when fuel cell 4 is just switched on, it might have other impurities gas in hydrogen transfer passage 43
In the presence of the purification reaction heap before being reacted can guarantee that the hydrogen purity in hydrogen transfer passage 43 reaches 99.99%, help
In the power generation performance for improving fuel cell 4.
3) super capacitor charges: fuel cell 4 is connect with super capacitor 8, makes fuel cell under the control of main control module 3
Reaction pile, which reacts, in 4 generates low current, and low current fills under the control of charging and discharging control circuit 10 for super capacitor 8
Electricity, to be reached for the purpose of the charging of super capacitor 8；
Wherein, the current value of low current is 10-15A.
4) soak proton exchange membrane 42: switch 13 is closed, and makes to react electricity in fuel cell 4 under the control of main control module 3
Heap reacts, and to generate low current/discharge super capacitor 8 under the control of main control module 3 and charging and discharging control circuit 10 small
Electric current flows to proton exchange membrane 42 in fuel cell 4 through load 14, and making to react inside proton exchange membrane 42 generates reaction water
Compound soaks proton exchange membrane 42；
The time that proton exchange membrane 42 is soaked in the step is 10-50s, and the preferred time for soaking proton exchange membrane 42 is
30s, the current value of low current are 10-15A.Wetting proton exchange membrane 42 can help to improve the power generation performance of fuel cell 4.
5) activation of catalyst: IGBT drive control protection circuit 6, which controls, makes the collector and emitter connection of IGBT5 make to fire
Expect that 42 moment of proton exchange membrane in battery 4 obtains high current, promotes the activation of catalyst in proton exchange membrane 42；
Interval progress activation of catalyst 1-15 times during soaking proton exchange membrane, preferably 3-5 times, activation of catalyst mistake
The maximum current value of high current is greater than 600A in journey, and each activation of catalyst time is 100-160ms, each activation of catalyst
Interval time is 2-8s, and the interval time of each activation of catalyst is preferably 3s, during activation of catalyst, the fuel cell
System is in open state, and the discouraged solenoid valve 19 and exhaust solenoid valve 20 are in the state of closure (i.e. in catalyst
Hydrogen and water vapour will not be discharged during activation), and plenum fan 21 is in normal operation, if during activation of catalyst
It meets and needs to close fuel cell system, also need to turn off fuel cell system after the completion of equal activation of catalyst.
While activation of catalyst starts, the super capacitor 8 under the control of main control module 3 and charging and discharging control circuit 10
Discharging low current is 14 power supply of load until activation of catalyst terminates, per the interval time between activation of catalyst twice
It is interior, fuel cell 4 under the control of main control module 3 and charging and discharging control circuit 10 on one side for super capacitor 8 charge, on one side for
14 power supply of load.
6) it is load supplying: makes to react pile under the control of main control module 3 in fuel cell 4 and react the electricity of generation
Stream incrementally increases until load current reaches load current threshold, and later, 4 continuous service of fuel cell is that load 14 supplies
Electricity.
As a preferred embodiment, proton exchange membrane and it is being to reaction pile input air, super capacitor charging, wetting
During load supplying step, lose heart solenoid valve 19 and exhaust solenoid valve 20 are opened according to substantive demand not timing.It is achieved in that
Pressure sensor is installed in hydrogen transfer passage 43, when the pressure value in hydrogen transfer passage 43 is greater than first pressure threshold value
When, exhaust solenoid valve 20 is opened, the water vapour of generation and remaining unreacted hydrogen are discharged through exhaust pipe 17, when hydrogen is defeated
When the pressure value in channel 43 being sent to be greater than second pressure threshold value, the solenoid valve 19 that loses heart is opened, by extra hydrogen through the pipeline that loses heart
16 release away, to ensure the safety of fuel cell generation；Wherein, first pressure threshold value and second pressure threshold value can be set
It is set to same numerical value, also can be set as different numerical value, when being set as different numerical value, first pressure threshold value is less than second pressure
Threshold value.
As a preferred embodiment, during 4 continuous service of fuel cell is 14 power supply of load, according to voltage attenuation feelings
Condition/power output accumulation situation interval carries out activation of catalyst 1-10 times；When voltage attenuation value is greater than voltage attenuation threshold time
Every progress activation of catalyst；When power output accumulated value is not less than power output accumulation threshold, interval carries out activation of catalyst；
During activation of catalyst, the super capacitor 8 is load 14 under the control of main control module 3 and charging and discharging control circuit 10
Power supply；Within per the interval time between activation of catalyst twice, fuel cell 4 is in main control module 3 and charging and discharging control electricity
It charges on one side for super capacitor 8 under the control on road 10, is on one side 14 power supply of load.
As shown in figure 5, for the method for another continual and steady power output, comprising the following steps:
1) Xiang Fanying pile input air: starting electricity generation module 1, starting plenum fan 21 make air through air inlet 44
Into the air delivery passage 41 of fuel cell 4；
2) purification reaction pile: it is defeated that gas transmission solenoid valve 18 opens the hydrogen for making hydrogen enter fuel cell 4 through gas pipeline
Channel 43 is sent, while the solenoid valve 19 that loses heart opens discouraged 16 row of pipeline of gas warp in the hydrogen transfer passage 43 for making fuel cell 4
Out, to achieve the purpose that purification reaction pile；
In general, the time of purification reaction pile is 1-5s, the preferred time of purification reaction pile is 3s.
3) super capacitor charging and wetting proton exchange membrane: switch 13 is closed, fuel cell 4 and super capacitor 8 and load
14 connections, make to react pile in fuel cell 4 under the control of main control module 3 and react and generate low current, and low current is filling
Discharge of electricity control circuit 10 controls next part as the charging of super capacitor 8, and another part flows to matter in fuel cell 4 through load 14
Proton exchange 42 makes the generation reaction hyrate wetting proton exchange membrane 42 that reacts inside proton exchange membrane 42；
Wherein, the current value of low current is 10-15A, and super capacitor charging and the time for soaking proton exchange membrane are 10-
50s, and it is preferred that the time is 30s.
4) activation of catalyst: IGBT drive control protection circuit 6, which controls, makes the collector and emitter connection of IGBT5 make to fire
Expect that 42 moment of proton exchange membrane in battery 4 obtains high current, promotes the activation of catalyst in proton exchange membrane 42；
Interval carries out activation of catalyst 1-15 times during super capacitor charges and soaks proton exchange membrane, preferably 3-5
Secondary, the maximum current value of high current is greater than 600A in catalyst activation process, and each activation of catalyst time is 100-160ms,
The interval time of each activation of catalyst is 2-8s, and the interval time of each activation of catalyst is preferably 3s, in activation of catalyst
Period, the fuel cell system is in open state, and the discouraged solenoid valve 19 and exhaust solenoid valve 20 are in closure
State (hydrogen and water vapour will not be discharged i.e. during activation of catalyst), need to close if meeting during activation of catalyst
Fuel cell system, it also needs to turn off fuel cell system after the completion of equal activation of catalyst.
While activation of catalyst starts, super capacitor 8 is under the control of main control module 3 and charging and discharging control circuit 10
Discharging low current is 14 power supply of load until activation of catalyst terminates, per the interval time between activation of catalyst twice
It is interior, fuel cell 4 under the control of main control module 3 and charging and discharging control circuit 10 on one side for super capacitor 8 charge, on one side for
14 power supply of load.
5) it is load supplying: makes to react pile under the control of main control module 3 in fuel cell 4 and react the electricity of generation
Stream incrementally increases until load current reaches load current threshold, and later, 4 continuous service of fuel cell is that load 14 supplies
Electricity.
As a preferred embodiment, to reaction pile input air, super capacitor charging and wetting proton exchange membrane with
And to open lose heart solenoid valve 19 and exhaust solenoid valve 20 according to substantive demand not timing during load energizing step.Realization side
Formula is to install pressure sensor in hydrogen transfer passage 43, when the pressure value in hydrogen transfer passage 43 is greater than first pressure threshold
When value, exhaust solenoid valve 20 is opened, the water vapour of generation and remaining unreacted hydrogen are discharged through exhaust pipe 17, work as hydrogen
When pressure value in transfer passage 43 is greater than second pressure threshold value, the solenoid valve 19 that loses heart is opened, by extra hydrogen through gas outlet
Road 16 is released away, to ensure the safety of fuel cell generation；Wherein, first pressure threshold value and second pressure threshold value can be with
It is set as same numerical value, also can be set as different numerical value, when being set as different numerical value, first pressure threshold value is less than the second pressure
Force threshold.
As a preferred embodiment, during 4 continuous service of fuel cell is 14 power supply of load, according to voltage attenuation feelings
Condition/power output accumulation situation interval carries out activation of catalyst 1-10 times；When voltage attenuation value is greater than voltage attenuation threshold time
Every progress activation of catalyst；When power output accumulated value is not less than power output accumulation threshold, interval carries out activation of catalyst；
During activation of catalyst, the super capacitor 8 is load 14 under the control of main control module 3 and charging and discharging control circuit 10
Power supply；Within per the interval time between activation of catalyst twice, fuel cell 4 is in main control module 3 and charging and discharging control electricity
It charges on one side for super capacitor 8 under the control on road 10, is on one side 14 power supply of load.
Activation of catalyst principle: the catalyst metals platinum used in the present embodiment, the metal platinum are applied to proton friendship
Change in a certain layer in film 42, due to air delivery passage 41 be and air communication, that is, proton exchange membrane 42 in metal
Platinum can occur oxidation reaction with the oxygen in air and generate platinum oxide, and the activity of catalyst is caused to reduce, and living in catalyst
During change, the protection control of circuit 6 of IGBT drive control is connected to the collector and emitter of IGBT5, and 4 moment of fuel cell is short
Road, the electric current in fuel cell 4 can generate variation as shown in FIG. 6 at this time, after the collector and emitter connection of IGBT5
Electric current moment in fuel cell 4 increases, and the high current greater than 600A is grown between 20-40ms.Utilize this high current
The catalyst layer in proton exchange membrane 42 is acted in catalyst activation process, the electrochemical reaction formula of generation is specific as follows:
The electrochemical reaction formula occurred in film cathode:
The electrochemical reaction formula occurred in film anode:
By above-mentioned chemical formula it is found that in catalyst activation process, high current is to the catalyst layer in proton exchange membrane 42
Effect, makes the platinum oxide in proton exchange membrane 42 in catalyst layer be reduced into metal platinum again, so just improves catalysis
The activity of oxidant layer.
It is illustrated in figure 7 the comparison of 4 output power of fuel cell, load 14 power and Capacitance Power in different time period
Figure, as can be seen from FIG. 7, during activation of catalyst, this fuel cell system can be powered with stable power to load 14, be generated
The reason of this phenomenon is: super capacitor 8 can store certain electric energy, before activation of catalyst to super capacitor 8 into
Row charging, it is that load 14 is powered that then super capacitor 8, which just can discharge the electric energy of storage in the inner, during activation of catalyst, such as
This just can make fuel cell system with 14 power supply of continual and steady power output load, reduce the damage probability of load 14, extend
The service life of load 14.
The shutdown process of fuel cell system, comprising the following steps:
1) gas transmission solenoid valve 18 and exhaust solenoid valve 20 are opened simultaneously, gas transmission solenoid valve 18 and exhaust electromagnetism are closed after 3s
Valve 20；
2) plenum fan 21 continues to run, until the temperature of reaction pile is down to 25 DEG C or environment temperature.
Above descriptions are merely preferred embodiments of the utility model, it is all according to the technical solution of the utility model to
On embodiment made by any subtle modifications, equivalent variations and modifications, belong to the range of technical solutions of the utility model
It is interior.
Claims (10)
1. a kind of fuel cell system of continual and steady power output, it is characterised in that: including
Electricity generation module, including fuel cell, the fuel cell occur electrochemical reaction for the oxygen in hydrogen and air and produce
Raw electric energy, generated electric energy are load circuit power supply；The fuel cell includes multiple reaction piles, the reaction pile packet
Hydrogen transfer passage and air delivery passage are included, proton exchange membrane, institute are equipped between hydrogen transfer passage and air delivery passage
It states and contains catalyst in proton exchange membrane, the catalyst is used to accelerate the electrochemical reaction between the oxygen in hydrogen and air
Rate；
Catalyst activation module, for providing instantaneous large-current for fuel cell to activate the catalyst in fuel cell, including
IGBT and IGBT drive control protects circuit；
Main control module, for controlling the work of electricity generation module, catalyst activation module and charging and discharging module, including master control electricity
Road；
Charging and discharging module for storing the electric energy of fuel cell generation, and is load supplying during activation of catalyst, including
Super capacitor and charging and discharging control circuit, the charging and discharging control circuit are connect with governor circuit, the charging and discharging control
Circuit processed carries out charge and discharge control to super capacitor according to the master signal that governor circuit issues, and adjusts charge and discharge according to master signal
Electric current；
One end of the load circuit and the anode of fuel cell connect, the other end of the load circuit and bearing for fuel cell
Pole connection, the charging and discharging module and IGBT are in parallel with load circuit respectively, and the collector of the IGBT is electric with fuel respectively
The anode connection in pond, the emitter of the IGBT are connect with the cathode of fuel cell respectively, and the gate pole and IGBE of the IGBT drives
Dynamic control protection electric circuit connection, the IGBE drive control protection circuit are connect with governor circuit, the charging and discharging control electricity
Road one end is connect with fuel cell anode, and the charging and discharging control circuit other end is connect with super capacitor anode, described
The connection of the cathode of super capacitor cathode and fuel cell.
2. a kind of fuel cell system of continual and steady power output according to claim 1, it is characterised in that: further include
Voltage for exporting fuel cell is converted into the DC conversion modules of certain voltage value, the side of the DC conversion modules
It is connect with the both ends of fuel cell, the other side of the DC conversion modules and the both ends of load circuit connect.
3. a kind of fuel cell system of continual and steady power output according to claim 2, it is characterised in that: described negative
Carrying circuit includes load and switch, and the anode of one end of the switch and fuel cell connects, the other end of the switch and negative
One end of load connects, and the other end of the load and the cathode of fuel cell connect.
4. a kind of fuel cell system of continual and steady power output according to claim 3, it is characterised in that: the hair
Electric module further includes positive plate and negative plate, and in the side of hydrogen transfer passage, proton exchange membrane is electrically connected with film anode strip；
In the side of air delivery passage, proton exchange membrane is electrically connected with film cathode sheets；The positive plate and the film reacted in pile
Cathode sheets are electrically connected, and the negative plate is electrically connected with the film anode strip reacted in pile.
5. a kind of fuel cell system of continual and steady power output according to claim 4, it is characterised in that: the hair
Electric module further includes hydrogen gas pipeline, lose heart pipeline and exhaust pipe, and the hydrogen gas pipeline and hydrogen transfer passage connect
Logical, the discouraged pipeline and exhaust pipe are connected to outside air, offered in the air delivery passage multiple air into
Port, the hydrogen enter hydrogen transfer passage from hydrogen gas pipeline, under the catalyst in proton exchange membrane, hydrogen
Hydrogen Proton and negative electron are generated, the Hydrogen Proton reaches air delivery passage by proton exchange membrane, and the negative electron is through loading
Reach air delivery passage after circuit or IGBT, air enters air delivery passage from air inlet, Hydrogen Proton, negative electron and
Oxygen reaction in air generates water vapour, and water vapour and remaining unreacted hydrogen are discharged from exhaust pipe.
6. a kind of fuel cell system of continual and steady power output according to claim 5, it is characterised in that: the hair
Electric module further includes gas transmission solenoid valve, and the gas transmission solenoid valve is installed on hydrogen gas pipeline to control hydrogen gas pipeline
On-off.
7. a kind of fuel cell system of continual and steady power output according to claim 6, it is characterised in that: the hair
Electric module further includes the solenoid valve that loses heart, and the discouraged solenoid valve, which is set to, to lose heart on pipeline, and the discouraged solenoid valve is set to gas transmission
The front end of solenoid valve, so that hydrogen is lost heart in hydrogen gas pipeline superpressure, pipeline is released.
8. a kind of fuel cell system of continual and steady power output according to claim 7, it is characterised in that: the hair
Electric module further includes exhaust solenoid valve, and the exhaust solenoid valve is installed on the on-off that exhaust pipe is controlled on exhaust pipe.
9. a kind of fuel cell system of continual and steady power output according to claim 8, it is characterised in that: the hair
Electric module further includes airstrainer, and the airstrainer is set to the side of fuel cell.
10. a kind of fuel cell system of continual and steady power output according to claim 9, it is characterised in that: described
Electricity generation module further includes plenum fan, and the plenum fan is set to the other side of fuel cell, and the plenum fan passes through air
It is sent into air delivery passage from air inlet after airstrainer, and takes away the partial heat that reaction pile reaction generates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920391166.9U CN209496958U (en) | 2019-03-26 | 2019-03-26 | A kind of fuel cell system of continual and steady power output |
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| CN201920391166.9U CN209496958U (en) | 2019-03-26 | 2019-03-26 | A kind of fuel cell system of continual and steady power output |
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| CN209496958U true CN209496958U (en) | 2019-10-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994757A (en) * | 2019-03-26 | 2019-07-09 | 广东亚氢科技有限公司 | A kind of method of fuel cell system and continual and steady power output |
| CN111697253A (en) * | 2020-06-06 | 2020-09-22 | 北京潞电电气设备有限公司 | Uninterrupted power supply method and device for hydrogen fuel cell and hydrogen fuel cell |
-
2019
- 2019-03-26 CN CN201920391166.9U patent/CN209496958U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994757A (en) * | 2019-03-26 | 2019-07-09 | 广东亚氢科技有限公司 | A kind of method of fuel cell system and continual and steady power output |
| CN109994757B (en) * | 2019-03-26 | 2023-10-10 | 广东亚氢科技有限公司 | Fuel cell system and method for continuously stabilizing power output |
| CN111697253A (en) * | 2020-06-06 | 2020-09-22 | 北京潞电电气设备有限公司 | Uninterrupted power supply method and device for hydrogen fuel cell and hydrogen fuel cell |
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