CN110429305A - Impurity discharge method, the apparatus and system of Proton Exchange Membrane Fuel Cells - Google Patents
Impurity discharge method, the apparatus and system of Proton Exchange Membrane Fuel Cells Download PDFInfo
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- CN110429305A CN110429305A CN201910648507.0A CN201910648507A CN110429305A CN 110429305 A CN110429305 A CN 110429305A CN 201910648507 A CN201910648507 A CN 201910648507A CN 110429305 A CN110429305 A CN 110429305A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04328—Temperature; Ambient temperature of anode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04335—Temperature; Ambient temperature of cathode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04358—Temperature; Ambient temperature of the coolant
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04537—Electric variables
- H01M8/04604—Power, energy, capacity or load
- H01M8/04619—Power, energy, capacity or load of fuel cell stacks
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The embodiment of the present invention provides impurity discharge method, the apparatus and system of a proton exchanging film fuel battery, this method comprises: determining the working condition of the Proton Exchange Membrane Fuel Cells, when the working condition is first state, according to the coolant temperature of pile, pile output power, hydrogen gas path temperature, empty gas path temperature in the Proton Exchange Membrane Fuel Cells of acquisition, pile heat production efficiency is determined；The impurity content on hydrogen road in Proton Exchange Membrane Fuel Cells is determined according to pile heat production efficiency；Impurity of the opening and closing of hydrogen vent valve to be discharged in the hydrogen road is controlled according to impurity content.The embodiment of the present invention goes out the impurity content in Proton Exchange Membrane Fuel Cells in hydrogen road by pile heat production efficiency calculation, the simple and convenient impurity content that obtains is without relying on the equipment such as detector and sensor, save cost, and adapt to different environment, then the opening and closing of hydrogen vent valve is controlled according to impurity content, so that impurity discharge more thoroughly and does not waste hydrogen.
Description
Technical field
The present embodiments relate to the discharges of the impurity of fuel cell field more particularly to a proton exchanging film fuel battery
Method, apparatus and system.
Background technique
Proton Exchange Membrane Fuel Cells (Proton Exchsange Membrane Fuel Cell, abbreviation PEMFC) has
Energy conversion efficiency high and low temperature quick start, low noise, it is pollution-free the features such as, be highly suitable as green novel energy source automobile
Power source.The hydrogen fuel cell of PEMFC is made of hydrogen road, air road and pile, in PEMFC reaction process, has portion
The impurity (predominantly nitrogen) in air is divided to penetrate into hydrogen road by proton exchange membrane, as impurity increases in hydrogen road,
The reaction rate of PEMFC can reduce, and impurity can excessively reduce the service life of PEMFC.
In the prior art, the impurity for generalling use time opening hydrogen vent valve to be discharged in hydrogen road.But if hydrogen vent valve
Opening time is too short, and the impurity discharge that will cause in hydrogen road is not thorough, if the hydrogen vent valve opening time is too long, and will lead to hydrogen
The waste of gas.
Therefore, a kind of new impurity discharge method for Proton Exchange Membrane Fuel Cells is needed, so as to hydrogen
Impurity in road is effectively discharged.
Summary of the invention
The embodiment of the present invention provides impurity discharge method, the apparatus and system of a proton exchanging film fuel battery, with solution
Certainly the setting of current hydrogen vent valve opening time is unreasonable, causes in hydrogen road impurity discharge to be not thorough or the problem of hydrogen wastes.
In a first aspect, the embodiment of the present invention provides the impurity discharge method of a proton exchanging film fuel battery, the matter
The impurity discharge method of proton exchange film fuel cell is suitable for Proton Exchange Membrane Fuel Cells, the Proton Exchange Membrane Fuel Cells
Including pile, air road, hydrogen road and hydrogen vent valve；
The impurity discharge method, comprising:
The working condition for determining the Proton Exchange Membrane Fuel Cells, when the working condition is first state, according to
The coolant temperature of pile, pile output power, hydrogen gas path temperature, air road in the Proton Exchange Membrane Fuel Cells obtained
Temperature determines pile heat production efficiency；
The impurity content on hydrogen road described in the Proton Exchange Membrane Fuel Cells is determined according to the pile heat production efficiency；
The impurity for controlling the opening and closing of the hydrogen vent valve according to the impurity content to be discharged in the hydrogen road.
It is described that the opening and closing of the hydrogen vent valve is controlled to be discharged according to the impurity content in a kind of possible embodiment
Impurity in the hydrogen road, comprising:
When the impurity content is greater than first threshold, according to preset hydrogen road impurity content table, determine described in discharge
First duration required for impurity content, and the hydrogen vent valve is controlled according to first duration and is opened to carry out the hydrogen road
In impurity discharge.
In a kind of possible embodiment, the method also includes:
When the working condition is the second state, controls the hydrogen vent valve and open the second duration to carry out the hydrogen road
In impurity discharge, wherein second duration be according to the type of the Proton Exchange Membrane Fuel Cells determine.
In a kind of possible embodiment, the method also includes:
When the working condition switches to the third state from first state, existed according to the Proton Exchange Membrane Fuel Cells
Impurity content when switching to the third state from first state controls the hydrogen vent valve in the opening and closing of the third state.
It is described to be switched according to the Proton Exchange Membrane Fuel Cells from first state in a kind of possible embodiment
Impurity content when to the third state, controls the hydrogen vent valve in the opening and closing of the third state, comprising:
When the impurity content is greater than second threshold, according to preset hydrogen road impurity content table, determine described in discharge
Third duration required for impurity content, and the hydrogen vent valve is controlled according to the third duration and is opened under the third state
To carry out the discharge of the impurity in the hydrogen road.
It is described to be switched according to the Proton Exchange Membrane Fuel Cells from first state in a kind of possible embodiment
Impurity content when to the third state, controls the hydrogen vent valve in the opening and closing of the third state, comprising:
When the impurity content is not more than second threshold, controls the hydrogen vent valve and be held off in a third condition.
Second aspect, the embodiment of the present invention provide the impurity discharger of a proton exchanging film fuel battery,
The impurity discharger of the Proton Exchange Membrane Fuel Cells is used for the impurity in Proton Exchange Membrane Fuel Cells
It is discharged, wherein the Proton Exchange Membrane Fuel Cells includes pile, air road, hydrogen road and hydrogen vent valve；
The impurity discharger of the Proton Exchange Membrane Fuel Cells, comprising:
Processing unit, for determining the working condition of the Proton Exchange Membrane Fuel Cells, when the working condition is the
When one state, according to the coolant temperature of pile, pile output power, hydrogen in the Proton Exchange Membrane Fuel Cells of acquisition
Road temperature, empty gas path temperature, determine pile heat production efficiency；The pem fuel is determined according to the pile heat production efficiency
The impurity content of hydrogen road described in battery；
Control unit is discharged in the hydrogen road for controlling the opening and closing of the hydrogen vent valve according to the impurity content
Impurity；
The impurity discharger of the Proton Exchange Membrane Fuel Cells uses the proton exchange membrane as described in any of the above-described to fire
The impurity of the Proton Exchange Membrane Fuel Cells is discharged in the impurity discharge method of material battery.
In a kind of possible embodiment, described control unit is also used to when the Proton Exchange Membrane Fuel Cells
When working condition is the second state, controls the hydrogen vent valve and open the second duration to carry out the row of the impurity in the hydrogen road
Out, wherein second duration is determined according to the type of the Proton Exchange Membrane Fuel Cells.
In a kind of possible embodiment, described control unit is also used to cut when the working condition from first state
It is described miscellaneous when switching to the third state from first state according to the Proton Exchange Membrane Fuel Cells when shifting to the third state
Matter content controls the hydrogen vent valve in the opening and closing of the third state.
The third aspect, the embodiment of the present invention provide the impurity discharging system of a proton exchanging film fuel battery, comprising: such as
The impurity discharger and Proton Exchange Membrane Fuel Cells of Proton Exchange Membrane Fuel Cells described in any of the above embodiments；
Wherein, the Proton Exchange Membrane Fuel Cells includes pile, air road, hydrogen road and hydrogen vent valve.
Impurity discharge method, the apparatus and system of Proton Exchange Membrane Fuel Cells provided in this embodiment, by determining institute
The working condition for stating Proton Exchange Membrane Fuel Cells, when the working condition is first state, according to the proton exchange of acquisition
The coolant temperature of pile, pile output power, hydrogen gas path temperature, empty gas path temperature, determine pile heat production in membrane cell
Efficiency；The impurity content on hydrogen road in Proton Exchange Membrane Fuel Cells is determined according to pile heat production efficiency；According to impurity content control
Impurity of the opening and closing of hydrogen vent valve processed to be discharged in the hydrogen road.The embodiment of the present invention goes out proton by pile heat production efficiency calculation
Impurity content in exchange film fuel battery in hydrogen road simply and conveniently obtains impurity content without relying on detector and sensing
The equipment such as device, save cost, adapt to different environment, the opening and closing of hydrogen vent valve are then controlled according to impurity content, so that miscellaneous
Matter discharge more thoroughly and does not waste hydrogen.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the hydrogen line structure schematic diagram for the Proton Exchange Membrane Fuel Cells that one embodiment of the invention provides；
Fig. 2 is the process signal of the impurity discharge method for the Proton Exchange Membrane Fuel Cells that one embodiment of the invention provides
Figure；
Fig. 3 be another embodiment of the present invention provides Proton Exchange Membrane Fuel Cells impurity discharge method process signal
Figure；
Fig. 4 is the structural representation of the impurity discharger for the Proton Exchange Membrane Fuel Cells that one embodiment of the invention provides
Figure；
Fig. 5 is the hardware knot of the impurity discharge control equipment for the Proton Exchange Membrane Fuel Cells that one embodiment of the invention provides
Structure schematic diagram.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Noun according to the present invention is explained first:
Proton Exchange Membrane Fuel Cells: (Proton Exchsange Membrane Fuel Cell, abbreviation PEMFC) is
A kind of electrochemical generating unit that chemical energy is turned to electric energy, periphery mainly include three hydrogen road, air road and water pipe line of reasoning portions
Point, hydrogen and air chemically react inside pile.
Fig. 1 is the hydrogen line structure schematic diagram for the Proton Exchange Membrane Fuel Cells that one embodiment of the invention provides.Such as Fig. 1 institute
Show, to guarantee PEMFC normal reaction, need to control the pressure of hydrogen entrance, guarantees that hydrogen and air reaction meet power demand,
It is simultaneously to improve hydrogen utilization ratio, the method recycled using hydrogen, i.e., using the complete hydrogen of unreacted generation inside pile
After water is taken out of, water is discharged from and by drainage switch valve for aqueous water through moisture trap, then will by hydrogen gas circulating pump
Hydrogen sends back to the reuse of pile anode.In the process, discharge hydrogen is realized by the control to hydrogen vent valve in hydrogen road
Impurity in road.
Since during PEMFC reacts, the impurity (predominantly nitrogen) in air road can be entered in hydrogen road, with
In hydrogen road impurity gradually become more, just will affect the reaction rate of PEMFC, and impurity can excessively reduce the service life of PEMFC.
In the prior art, the impurity for generalling use time opening hydrogen vent valve to be discharged in hydrogen road, but use aforesaid way
When, if the hydrogen vent valve opening time is too short, the impurity discharge that will cause in hydrogen road is not thorough, if hydrogen vent valve opening time mistake
It is long, and will lead to the waste of hydrogen.
In addition, generalling use the impurity content in high precision instrument detection hydrogen road in the prior art, but high precision instrument
It is at high cost, it can not be efficiently applied to product, and high precision instrument is higher to environmental requirement, can not support the vehicle using PEMFC
It works under the environment such as high and cold plateau.
Proton Exchange Membrane Fuel Cells impurity discharge method provided by the invention, it is intended to solve the technology as above of the prior art
Problem.
How to be solved with technical solution of the specifically embodiment to technical solution of the present invention and the application below above-mentioned
Technical problem is described in detail.These specific embodiments can be combined with each other below, for the same or similar concept
Or process may repeat no more in certain embodiments.Below in conjunction with attached drawing, the embodiment of the present invention is described.
It should be noted that Proton Exchange Membrane Fuel Cells can be applied to many fields, following embodiment is to be applied to
It is illustrated on new-energy automobile.
Fig. 2 is the process signal of the impurity discharge method for the Proton Exchange Membrane Fuel Cells that one embodiment of the invention provides
Figure.The impurity discharge method of the Proton Exchange Membrane Fuel Cells is suitable for Proton Exchange Membrane Fuel Cells, the proton exchange
Membrane cell includes pile, air road, hydrogen road and hydrogen vent valve.
As shown in Fig. 2, the impurity discharge method includes:
S201, the working condition for determining the Proton Exchange Membrane Fuel Cells；
In the present embodiment, the working condition of Proton Exchange Membrane Fuel Cells can depend on the operating status of automobile, work as vapour
When vehicle operates normally, then it can be determined as normal operation mode as the PEMFC for providing power resources for automobile；When automobile is normal
Stop when driving, then PEMFC can be determined as orderly closedown mode；When automobile failure or emergency brake, PEMFC can
To be determined as emergency shutdown mode.Optionally, the first state in the present embodiment is that PEMFC is in normal operation mode.
S202, when the working condition be first state when, according to pile in the Proton Exchange Membrane Fuel Cells of acquisition
Coolant temperature, pile output power, hydrogen gas path temperature, empty gas path temperature, determine pile heat production efficiency.
In the present embodiment, the coolant temperature of pile, pile in the Proton Exchange Membrane Fuel Cells according to acquisition
Output power, hydrogen gas path temperature, empty gas path temperature, determine that a kind of achievable mode of pile heat production efficiency includes:
Temperature, the hydrogen gas path temperature, empty gas path temperature of the coolant liquid of the disengaging pile of PEMFC, and disengaging are obtained first
Flow, hydrogen road flow and the air road flow and pile output power of the coolant liquid of pile.In the actual operation process,
Temperature, the hydrogen gas path temperature, sky of the coolant liquid of disengaging pile can be obtained by the way that temperature, the pressure sensor of pile two sides is arranged in
Gas path temperature etc..
Secondly, according to heat Calculation formula Q=cm △ t or Q=cm (t2-t1), wherein C is specific heat capacity, and m is quality,
△ t is the variation of front and back temperature；When needing to calculate the heat generated in the something unit time, m value is the stream of the substance
Amount.
According to above-mentioned heat Calculation formula, the temperature of the coolant liquid of the pile got, hydrogen gas path temperature, air road are utilized
Temperature, and flow, hydrogen road flow and the air road flow of the coolant liquid of pile are passed in and out, calculate coolant liquid in the unit time
The heat that the heat and air road that the heat of absorption, hydrogen road absorb absorb.
Then according to the variation of temperature before and after pile autoreactivity, the heat of pile own temperature rising absorption is calculated.
Heat, the pile own temperature of the heat, the absorption of air road that finally absorb the heat of coolant liquid absorption, hydrogen road
The heat and pile output power of rising absorption are added, and obtain the heat generated in the pile unit time, i.e. pile heat production is imitated
Rate.
S203, the impurity content that hydrogen road in Proton Exchange Membrane Fuel Cells is determined according to pile heat production efficiency.
In the present embodiment, optionally, a kind of achievable mode of step S203 are as follows:
Pile heat production efficiency can obtain the impurity content in hydrogen road multiplied by a certain coefficient, wherein the coefficient can be adopted
It is obtained with standardization.The coefficient changes with the pile and different output powers of different model.
Mode can be achieved in the another kind of step S203 are as follows:
By the default table about pile heat production efficiency and the impurity content on corresponding hydrogen road, imitated according to pile heat production
Rate, which table look-up, obtains corresponding impurity content.
S204, impurity of the opening and closing of hydrogen vent valve to be discharged in the hydrogen road is controlled according to impurity content.
In the present embodiment, according to the number of the hydrogen road impurity content detected, the opening time of hydrogen vent valve is determined, when
When impurity content in hydrogen road is lower, hydrogen vent valve can be not turned on or slightly open a period of time, when miscellaneous in hydrogen road
When matter content is higher, the opening time of hydrogen vent valve can be extended.
That is, a kind of achievable mode of step S204:
When the impurity content is greater than first threshold, according to preset hydrogen road impurity content table, determine described in discharge
First duration required for impurity content, and the hydrogen vent valve is controlled according to first duration and is opened to carry out the hydrogen road
In impurity discharge.
In the present embodiment, when impurity content is greater than first threshold, illustrates that the impurity on hydrogen road at this time is more, need to open
Hydrogen vent valve is discharged.It should be noted that first threshold specifically can be empirically worth setting, this reality by those skilled in the art
Example is applied to be not limited it.
It should be noted that in the present embodiment, hydrogen road impurity content table, including hydrogen road impurity content and corresponding row
The opening time of hydrogen valve.Optionally, the hydrogen road impurity content table may be the opening time of impurity content and hydrogen vent valve
Relation curve, with the raising of impurity content, after opening time increases, but impurity content reaches a certain level, opening time
Increase slow or almost unchanged.Optionally, impurity content table in hydrogen road can be obtained by standardization.
The impurity discharge method of Proton Exchange Membrane Fuel Cells provided in this embodiment passes through the determination proton exchange membrane
The working condition of fuel cell, when the working condition is first state, according in the Proton Exchange Membrane Fuel Cells of acquisition
The coolant temperature of pile, pile output power, hydrogen gas path temperature, empty gas path temperature, determine pile heat production efficiency；According to pile
Heat production efficiency determines the impurity content on hydrogen road in Proton Exchange Membrane Fuel Cells；The opening and closing of hydrogen vent valve is controlled according to impurity content
With the impurity being discharged in the hydrogen road.The embodiment of the present invention goes out Proton Exchange Membrane Fuel Cells by pile heat production efficiency calculation
Impurity content in middle hydrogen road, simply and conveniently obtains impurity content, without relying on the equipment such as detector and sensor, saves
Cost, and adapt to different environment, the opening and closing of hydrogen vent valve is then controlled according to impurity content, so that impurity discharge is more thorough
And do not waste hydrogen.
Fig. 3 be another embodiment of the present invention provides Proton Exchange Membrane Fuel Cells impurity discharge method process signal
Figure.On the basis of embodiment shown in Fig. 2, as shown in figure 3, the impurity discharge method of the Proton Exchange Membrane Fuel Cells, comprising:
S301, the working condition for determining the Proton Exchange Membrane Fuel Cells.
In the present embodiment, the normal operation mode of PEMFC is first state, and the emergency shutdown mode of PEMFC is the second shape
State, PEMFC are that normal shutdown mode is the third state.When PEMFC is first state, step S302-S304 is executed；When
When PEMFC is the second state, step S305 is executed；When PEMFC is to switch to the third state from first state, step is executed
S306。
S302, according to the coolant temperature of pile, pile output power, hydrogen in the Proton Exchange Membrane Fuel Cells of acquisition
Road temperature, empty gas path temperature, determine pile heat production efficiency.
S303, the impurity content that hydrogen road in Proton Exchange Membrane Fuel Cells is determined according to pile heat production efficiency.
S304, impurity of the opening and closing of hydrogen vent valve to be discharged in the hydrogen road is controlled according to impurity content.
Similarly with previous embodiment, in the S302 of the present embodiment into S304, when determine pem fuel electricity
When pond is first state, according to the coolant temperature of pile, pile output power, hydrogen in the Proton Exchange Membrane Fuel Cells of acquisition
Gas path temperature, empty gas path temperature, determine pile heat production efficiency；It is determined in Proton Exchange Membrane Fuel Cells according to pile heat production efficiency
The impurity content on hydrogen road；Impurity according to the opening and closing of impurity content control hydrogen vent valve to be discharged in the hydrogen road, realization side
Formula can be found in previous embodiment, herein without repeating.
S305, the control hydrogen vent valve open the second duration to carry out the discharge of the impurity in the hydrogen road.
Unlike previous embodiment, in the present embodiment, when determining that Proton Exchange Membrane Fuel Cells is the second state,
That is when PEMFC is determined as emergency shutdown mode, need to clear away the impurity in hydrogen road as early as possible, without regard to hydrogen loss etc. its
He influences, and can control hydrogen vent valve at this time and opens immediately, and opening time is the second duration, and second duration is obtained by standardization
It takes, the hydrogen vent valve opening time of the PEMFC of different model or different output power is different.
Wherein, second duration is determined according to the type of the Proton Exchange Membrane Fuel Cells.
S306, contained according to impurity of the Proton Exchange Membrane Fuel Cells when switching to the third state from first state
Amount, opening and closing of the control hydrogen vent valve in the third state.
Unlike previous embodiment, in the present embodiment, when determining that Proton Exchange Membrane Fuel Cells cuts from first state
When shifting to the third state, i.e. when PEMFC switches to orderly closedown mode by normal operation mode, need cleaning hydrogen more as far as possible
Impurity in road, at this point, can be miscellaneous when switching to the third state from first state according to the Proton Exchange Membrane Fuel Cells
Matter content, opening and closing of the control hydrogen vent valve in the third state, wherein Proton Exchange Membrane Fuel Cells is switching to the from first state
The impurity that impurity content when three condition specifically refers to last moment of Proton Exchange Membrane Fuel Cells in the first state contains
Amount can be detected according to above-mentioned steps S302, S303 and be obtained, and specific acquisition modes can be found in mode described in previous embodiment.
Further, a kind of achievable mode of step S306 are as follows:
When the impurity content at last moment under first state is greater than second threshold, according to preset hydrogen road impurity
Content table determines third duration required for the impurity content is discharged, and controls the hydrogen vent valve according to the third duration
It is opened under the third state to carry out the discharge of the impurity in the hydrogen road.
Mode can be achieved in the another kind of step S306 are as follows:
When the impurity content is not more than second threshold, control hydrogen vent valve is held off in a third condition.
In the present embodiment, second threshold is less than first threshold, and second threshold is a very low limit value in other words, works as impurity
When content is not more than second threshold, illustrate that impurity content is seldom at this time, without carrying out the processing of discharge impurity, i.e. hydrogen vent valve is kept
It closes；When impurity content is greater than second threshold, according to preset hydrogen road impurity content table, row's hydrogen of third duration is opened
Valve, with the impurity being discharged in hydrogen road.
The impurity discharge method of Proton Exchange Membrane Fuel Cells provided in this embodiment passes through the determination proton exchange membrane
The working condition of fuel cell determines proton according to determining pile heat production efficiency when the working condition is first state
The impurity content on hydrogen road in exchange film fuel battery controls the opening and closing of hydrogen vent valve according to impurity content the hydrogen road is discharged
In impurity；Or when the working condition is the second state, it is described to carry out to control hydrogen vent valve second duration of unlatching
The discharge of impurity in hydrogen road；Or when the working condition switches to the third state from first state, according to the matter
Impurity content of the proton exchange film fuel cell when switching to the third state from first state controls hydrogen vent valve in the third state
Opening and closing.The embodiment of the present invention is by combining the different working condition of Proton Exchange Membrane Fuel Cells, and hydrogen vent valve is different opens for control
Open strategy so that Proton Exchange Membrane Fuel Cells under different working conditions, be able to achieve impurity discharge it is more thorough and not unrestrained
Take hydrogen.
Fig. 4 is the structural representation of the impurity discharger for the Proton Exchange Membrane Fuel Cells that one embodiment of the invention provides
Figure.The impurity discharger of Proton Exchange Membrane Fuel Cells is used to that the impurity in Proton Exchange Membrane Fuel Cells to be discharged,
Wherein, the Proton Exchange Membrane Fuel Cells includes pile, air road, hydrogen road and hydrogen vent valve.
As shown in figure 4, the impurity discharger 40 of the Proton Exchange Membrane Fuel Cells includes: processing unit 401, control list
Member 402.
Processing unit 401, for determining the working condition of the Proton Exchange Membrane Fuel Cells, when the working condition is
When first state, according to the coolant temperature of pile, pile output power, hydrogen road in the Proton Exchange Membrane Fuel Cells of acquisition
Temperature, empty gas path temperature, determine pile heat production efficiency；Hydrogen in Proton Exchange Membrane Fuel Cells is determined according to pile heat production efficiency
The impurity content on road；
Control unit 402, for controlling impurity of the opening and closing of hydrogen vent valve to be discharged in the hydrogen road according to impurity content；
The impurity discharger 40 of the Proton Exchange Membrane Fuel Cells is using any one embodiment as shown in Figure 2 or Figure 3
The impurity of the Proton Exchange Membrane Fuel Cells is discharged in the impurity discharge method of the Proton Exchange Membrane Fuel Cells.
The impurity discharger of Proton Exchange Membrane Fuel Cells provided in this embodiment, determines the matter through the processing unit
The working condition of proton exchange film fuel cell is fired when the working condition is first state according to the proton exchange membrane of acquisition
Expect the coolant temperature of pile in battery, pile output power, hydrogen gas path temperature, empty gas path temperature, determines pile heat production efficiency；
The impurity content on hydrogen road in Proton Exchange Membrane Fuel Cells is determined according to pile heat production efficiency；By control unit according to impurity
Content controls impurity of the opening and closing of hydrogen vent valve to be discharged in the hydrogen road.The embodiment of the present invention passes through pile heat production efficiency calculation
Impurity content in Proton Exchange Membrane Fuel Cells in hydrogen road out, it is simple and convenient to obtain impurity content, without relying on detector
And the equipment such as sensor, cost is saved, and adapt to different environment, opening for hydrogen vent valve is then controlled according to impurity content
It closes, so that impurity discharge more thoroughly and does not waste hydrogen.
With continued reference to shown in Fig. 4, optionally, the processing unit 401 is also used to:
When the working condition of the Proton Exchange Membrane Fuel Cells is the second state, controls the hydrogen vent valve and open second
Duration is to carry out the discharge of the impurity in the hydrogen road, wherein second duration is according to the pem fuel
What the type of battery determined.
Optionally, the processing unit 401, is also used to: when the working condition switches to the third state from first state
When, according to impurity content of the Proton Exchange Membrane Fuel Cells when switching to the third state from first state, control row's hydrogen
Opening and closing of the valve in the third state.
The impurity discharger of Proton Exchange Membrane Fuel Cells provided in an embodiment of the present invention, can be used for executing above-mentioned side
Method embodiment, it is similar that the realization principle and technical effect are similar, and details are not described herein again for the present embodiment.
The embodiment of the present invention also provides the impurity discharging system of a proton exchanging film fuel battery, pem fuel
The impurity discharging system of battery includes: the impurity discharge dress of Proton Exchange Membrane Fuel Cells described in embodiment as shown in Figure 4 above
It sets and Proton Exchange Membrane Fuel Cells；
Wherein, the Proton Exchange Membrane Fuel Cells includes pile, air road, hydrogen road and hydrogen vent valve.
The impurity discharging system of Proton Exchange Membrane Fuel Cells provided in an embodiment of the present invention can be used for executing above-mentioned side
Method embodiment, it is similar that the realization principle and technical effect are similar, and details are not described herein again for the present embodiment.
Fig. 5 is that the impurity for the Proton Exchange Membrane Fuel Cells that one embodiment of the invention provides excludes the hardware knot of control equipment
Structure schematic diagram.As shown in figure 5, the impurity exclusion control equipment 50 of Proton Exchange Membrane Fuel Cells provided in this embodiment includes:
At least one processor 501 and memory 502.The Proton Exchange Membrane Fuel Cells device 50 further includes communication component 503.Its
In, processor 501, memory 502 and communication component 503 are connected by bus 504.
During specific implementation, at least one processor 501 executes the computer execution that the memory 502 stores and refers to
It enables, so that at least one processor 501 executes the impurity discharge method of Proton Exchange Membrane Fuel Cells as above.
The specific implementation process of processor 501 can be found in above method embodiment, and it is similar that the realization principle and technical effect are similar,
Details are not described herein again for the present embodiment.
In above-mentioned embodiment shown in fig. 5, it should be appreciated that processor can be central processing unit (English:
Central Processing Unit, referred to as: CPU), can also be other general processors, digital signal processor (English:
Digital Signal Processor, referred to as: DSP), specific integrated circuit (English: Application Specific
Integrated Circuit, referred to as: ASIC) etc..General processor can be microprocessor or the processor is also possible to
Any conventional processor etc..Hardware processor can be embodied directly in conjunction with the step of invention disclosed method to have executed
At, or in processor hardware and software module combination execute completion.
Memory may include high speed RAM memory, it is also possible to and it further include non-volatile memories NVM, for example, at least one
Magnetic disk storage.
Bus can be industry standard architecture (Industry Standard Architecture, ISA) bus, outer
Portion's apparatus interconnection (Peripheral Component Interconnect, PCI) bus or extended industry-standard architecture
(Extended Industry Standard Architecture, EISA) bus etc..Bus can be divided into address bus, number
According to bus, control bus etc..For convenient for indicating, the bus in illustrations does not limit only a bus or a seed type
Bus.
The application also provides a kind of readable storage medium storing program for executing, is stored with computer executed instructions in the readable storage medium storing program for executing,
When processor executes the computer executed instructions, Proton Exchange Membrane Fuel Cells impurity discharge method control as above is realized
Method.
Above-mentioned readable storage medium storing program for executing can be by any kind of volatibility or non-volatile memory device or they
Combination realize, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM) is erasable
Programmable read only memory (EPROM), programmable read only memory (PROM), read-only memory (ROM), magnetic memory, quick flashing
Memory, disk or CD.Readable storage medium storing program for executing can be any usable medium that general or specialized computer can access.
A kind of illustrative readable storage medium storing program for executing is coupled to processor, to enable a processor to from the readable storage medium storing program for executing
Information is read, and information can be written to the readable storage medium storing program for executing.Certainly, readable storage medium storing program for executing is also possible to the composition portion of processor
Point.Processor and readable storage medium storing program for executing can be located at specific integrated circuit (Application Specific Integrated
Circuits, referred to as: ASIC) in.Certainly, processor and readable storage medium storing program for executing can also be used as discrete assembly and be present in equipment
In.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. the impurity discharge method of a proton exchanging film fuel battery, which is characterized in that the Proton Exchange Membrane Fuel Cells
Impurity discharge method be suitable for Proton Exchange Membrane Fuel Cells, the Proton Exchange Membrane Fuel Cells include pile, air road,
Hydrogen road and hydrogen vent valve；
The impurity discharge method, comprising:
The working condition for determining the Proton Exchange Membrane Fuel Cells, when the working condition is first state, according to acquisition
The Proton Exchange Membrane Fuel Cells in pile coolant temperature, pile output power, hydrogen gas path temperature, air road temperature
Degree, determines pile heat production efficiency；
The impurity content on hydrogen road described in the Proton Exchange Membrane Fuel Cells is determined according to the pile heat production efficiency；
The impurity for controlling the opening and closing of the hydrogen vent valve according to the impurity content to be discharged in the hydrogen road.
2. impurity discharge method according to claim 1, which is characterized in that described according to impurity content control
Impurity of the opening and closing of hydrogen vent valve to be discharged in the hydrogen road, comprising:
When the impurity content is greater than first threshold, according to preset hydrogen road impurity content table, determines and the impurity is discharged
First duration required for content, and the hydrogen vent valve is controlled according to first duration and is opened to carry out in the hydrogen road
The discharge of impurity.
3. impurity discharge method according to claim 1 characterized by comprising
When the working condition is the second state, controls the hydrogen vent valve and open the second duration to carry out in the hydrogen road
The discharge of impurity, wherein second duration is determined according to the type of the Proton Exchange Membrane Fuel Cells.
4. impurity discharge method according to claim 1 characterized by comprising
When the working condition switches to the third state from first state, according to the Proton Exchange Membrane Fuel Cells from
One state switches to the impurity content when third state, controls the hydrogen vent valve in the opening and closing of the third state.
5. impurity discharge method according to claim 4, which is characterized in that described according to the pem fuel electricity
Chi Cong first state switches to the impurity content when third state, controls the hydrogen vent valve in the opening and closing of the third state,
Include:
When the impurity content is greater than second threshold, according to preset hydrogen road impurity content table, determines and the impurity is discharged
Third duration required for content, and according to the third duration control the hydrogen vent valve opened under the third state with into
The discharge of impurity in the row hydrogen road.
6. impurity discharge method according to claim 4, which is characterized in that described according to the pem fuel electricity
Chi Cong first state switches to the impurity content when third state, controls the hydrogen vent valve in the opening and closing of the third state,
Include:
When the impurity content is not more than second threshold, controls the hydrogen vent valve and be held off in a third condition.
7. the impurity discharger of a proton exchanging film fuel battery, which is characterized in that the Proton Exchange Membrane Fuel Cells
Impurity discharger for the impurity in Proton Exchange Membrane Fuel Cells to be discharged, wherein the proton exchange membrane combustion
Expect that battery includes pile, air road, hydrogen road and hydrogen vent valve；
The impurity discharger of the Proton Exchange Membrane Fuel Cells, comprising:
Processing unit, for determining the working condition of the Proton Exchange Membrane Fuel Cells, when the working condition is the first shape
When state, according to the coolant temperature of pile, pile output power, hydrogen road temperature in the Proton Exchange Membrane Fuel Cells of acquisition
Degree, empty gas path temperature, determine pile heat production efficiency；The Proton Exchange Membrane Fuel Cells is determined according to the pile heat production efficiency
Described in hydrogen road impurity content；
Control unit is discharged miscellaneous in the hydrogen road for controlling the opening and closing of the hydrogen vent valve according to the impurity content
Matter；
The impurity discharger of the Proton Exchange Membrane Fuel Cells uses the proton exchange membrane as described in claim any one of 1-6
The impurity of the Proton Exchange Membrane Fuel Cells is discharged in the impurity discharge method of fuel cell.
8. the impurity discharger of Proton Exchange Membrane Fuel Cells according to claim 7, which is characterized in that the control
Unit is also used to control the hydrogen vent valve when the working condition of the Proton Exchange Membrane Fuel Cells is the second state and open
Second duration is to carry out the discharge of the impurity in the hydrogen road, wherein second duration is according to the proton exchange membrane
What the type of fuel cell determined.
9. the impurity discharger of Proton Exchange Membrane Fuel Cells according to claim 7, which is characterized in that the control
Unit is also used to when the working condition switches to the third state from first state, according to the pem fuel electricity
Chi Cong first state switches to the impurity content when third state, controls the hydrogen vent valve in the opening and closing of the third state.
10. the impurity discharging system of a proton exchanging film fuel battery characterized by comprising as claim 7-9 is any
The impurity discharger and Proton Exchange Membrane Fuel Cells of Proton Exchange Membrane Fuel Cells described in；
Wherein, the Proton Exchange Membrane Fuel Cells includes pile, air road, hydrogen road and hydrogen vent valve.
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| CN114725450A (en) * | 2022-04-28 | 2022-07-08 | 襄阳达安汽车检测中心有限公司 | Hydrogen emission control method for hydrogen fuel cell |
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