CN106571479A - Fuel cell system and shutdown control method thereof - Google Patents
Fuel cell system and shutdown control method thereof Download PDFInfo
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- CN106571479A CN106571479A CN201510647000.5A CN201510647000A CN106571479A CN 106571479 A CN106571479 A CN 106571479A CN 201510647000 A CN201510647000 A CN 201510647000A CN 106571479 A CN106571479 A CN 106571479A
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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
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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 invention provides a fuel cell system and a shutdown control method thereof. The fuel cell system includes: an electric pile, the negative electrode of the electric pile is communicated with one end of an air transportation pipeline, and an air outlet of the electric pile is communicated with one end of an air discharge pipeline. The system is characterized in that it also includes a first air valve disposed on the air transportation pipeline and a second air valve arranged on the air discharge pipeline; an A end of a hydrogen air pressure balancing tank is communicated with the air outlet of the electric pile in the fuel cell system, a B end of the hydrogen air pressure balancing tank is communicated with a hydrogen outlet of the electric pile in the fuel cell system. In the hydrogen air pressure balancing tank, the A end and the B end are sealed and separated by a movable baffle. A discharge resistor is connected between a positive electrode and a negative electrode of the electric pile in series. The fuel cell system can solve the problem that after shutdown of a fuel cell, a hydrogen air interface can appear on the electrode after hydrogen-oxygen mixing occurs at the negative electrode or positive electrode, thus ensuring the electric pile performance, and prolonging the service life of the fuel cell.
Description
Technical field
The present invention relates to a kind of on-vehicle fuel technology, more particularly to a kind of fuel cell system
And halt control method.
Background technology
Fuel cell system for vehicles includes:Connect the Hydrogen Line and air line of pile respectively,
Hydrogen and air into pile is reacted in pile, there is provided energy.But vehicle fuel
After a shutdown, in pile, hydrogen lateral pressure is typically greater than air side pressure to battery.Due to oozing
Leakage effect causes to detect trace hydrogen content in the air side cavity of pile.For this purpose, empty
Trace hydrogen in the cavity of gas side is reacted in pile catalyst surface with the oxygen in chamber air,
Cause catalyst carrier carbon loss in pile, cause catalyst aggregation in pile, under specific surface area
Drop.Ultimately result in Performance data decline.The life-span of fuel cell also declines therewith.
To solve the above problems, various methods for eliminating hydrogen sky interface, example in prior art, are provided
Such as, a kind of scheme is that short-circuit both positive and negative polarity consumes reacting gas after fuel cell, is entered
And reduce and elimination reaction source;Another kind of scheme is for a sealing is created after fuel cell shutdown
Sealed environment without oxygen or hydrogen.
And neglect during consuming reacting gas by both positive and negative polarity short circuit in the first above-mentioned scheme
Omit during storage, hydrogen passes through membrane electrode to the slow seepage of air side, and urges in negative electrode
The fact that agent surface direct reaction.Especially for high power fuel cell pile.Due to electricity
Heap piece number is more, and other contents of anode and negative electrode intracavity are very big, and direct short circuit both positive and negative polarity can
So that immediate current is very big, and can continue for some time until intracavity gas exhaust.At this
During fuel cell be in stopped status, in its pile temperature rise possibly even damage soon very much
Bad membrane electrode.And the membrane electrode for wherein owing gas can be caused straight in the transient large current discharge for starting
Reversed pole is changed into being electrolysed working method, and for performer switch is likely to attract arcing etc.
Problem.In pile two cavity pressures after a shutdown long-time in be unable to maintain that balance membrane electrode also can
Cause to damage.
Above-mentioned second scheme is being opened again using the mode of air or atmosphere of hydrogen protection pile
During machine, it is impossible to avoid its moment negative electrode or anode while there is the state of hydrogen, oxygen, it is impossible to root
Person's character avoids hydrogen sky damage of the interface to catalyst.
For this purpose, after how eliminating fuel cell shutdown, in pile, hydrogen is to air side cavity seepage
Become the problem of current urgent need to resolve.
The content of the invention
For defect of the prior art, the present invention provides a kind of fuel cell system and shuts down control
Method processed, after can solve the problem that fuel cell is shut down, in pile, hydrogen is to air side cavity seepage
Problem, and then ensure the performance of pile, extend the service life of fuel cell.
In a first aspect, the present invention provides a kind of fuel cell system, including:
Pile, the negative electrode of the pile connect one end of air delivery pipe, the air of the pile
The one end on outlet air discharge pipe road;And fuel cell system also includes:It is arranged on institute
State the first air door on air delivery pipe;
The second air door being arranged on the air discharge pipe road;
Air outlet slit in the pile of the A ends connection fuel cell system of hydrogen sky pressure balancing tank, institute
Hydrogen outlet in the pile of the B ends connection fuel cell system for stating hydrogen sky pressure balancing tank;
In the hydrogen sky pressure balancing tank, side a and b is separated by sideboard sealing;
A discharge resistance is concatenated between the anode and negative electrode of the pile.
Alternatively, blind pipe of the hydrogen sky pressure balancing tank for elliposoidal.
Alternatively, the one end on the anode connection hydrogen delivery tube road of the pile;
The other end connection hydrogen source on the hydrogen delivery tube road, and on hydrogen delivery tube road also
It is communicated with hydrogen gas tank;On hydrogen partial transfer pipeline between the hydrogen gas tank and the hydrogen source
It is provided with for blocking the first electromagnetic valve that hydrogen is supplied;
Set on hydrogen partial transfer pipeline between the anode of the hydrogen gas tank and the pile successively
It is equipped with hydrogen regulator, the second electromagnetic valve.
Alternatively, the hydrogen outlet of the pile connects one end of hydrogen discharge pipeline, and described
It is provided with hydrogen discharge pipeline for blocking the 3rd electromagnetic valve of hydrogen discharge.
Alternatively, the fuel cell system also includes:Controller;
First electromagnetic valve, the second electromagnetic valve, the 3rd electromagnetic valve and first air door,
Second air door is all connected with the controller;
The controller according to predetermined control strategy control first electromagnetic valve, the second electromagnetic valve,
3rd electromagnetic valve and first air door, the respective switch of the second air door.
Second aspect, the present invention also provide a kind of based on any of the above-described described fuel cell system
Halt control method, including:
After fuel cell system orderly closedown, the air delivery pipe of fuel cell system is blocked
With air discharge pipe road, hydrogen discharge pipeline;And
The hydrogen delivery tube road of fuel cell continues to supply hydrogen to pile anode, the pile
The air of the hydrogen of anode intracavity and the cathode cavity is reacted, to consume the pile
Oxygen in the cavity of cathode air side.
Alternatively, methods described also includes:
Detect whether the sideboard of the hydrogen sky pressure balancing tank is moved in preset time period,
If not moving, the hydrogen delivery tube road of fuel cell system is blocked.
Alternatively, the air delivery pipe for blocking fuel cell system and air discharge pipe road,
Hydrogen discharge pipeline, including:
The controller of the fuel cell system cuts out the first air door, cuts out the fuel electricity
Second air door of cell system, the 3rd electromagnetic valve of closing;
Correspondingly, the hydrogen delivery tube road of the fuel cell continues to supply hydrogen to pile anode,
Including:
The controller cuts out first electromagnetic valve, passes through the hydrogen gas tank of fuel cell system
Hydrogen delivery tube road continues to supply hydrogen to pile anode;
The hydrogen delivery tube road for blocking fuel cell system, including:Close the second electromagnetic valve.
The third aspect, the present invention also provide a kind of fuel battery engines or fuel cell power source,
Including any of the above-described described fuel cell system.
Fourth aspect, the present invention also provide a kind of automobile, including above-mentioned fuel battery engines.
As shown from the above technical solution, a kind of fuel cell system of the invention and shutdown controlling party
Method, blocks the first air cock of air delivery pipe by increasing in the fuel cell system
Door, and for blocking second air door on air discharge pipe road, realize in fuel cell system
Stage air transfer pipeline and air discharge pipe road immediately when system is shut down;Further in pile
Concatenate discharge resistance between negative electrode and anode, and then during hydrogen and oxygen reaction in pile,
The led to current value of pile can be limited, response speed is reduced, can preferably be controlled stack temperature, subtract
Damage of few localized hyperthermia to proton exchange membrane electrode in pile, while arranging hydrogen pneumatics dynamic balance
Whether tank and the hydrogen and oxygen of preferably knowing in pile react and complete, and are capable of achieving hydrogen conveying
The pressure balance of pipeline and air delivery pipe, it is ensured that the pressure at both sides of proton exchange membrane electrode is put down
Weighing apparatus.Thus, can effectively solving fuel cell shut down after, in pile, hydrogen is oozed to air side cavity
The problem of leakage.As the hydrogen sealed in the pile of fuel cell system relative to oxygen was
Amount, final cathode side oxygen will be consumed totally, make pile be in oxygen-free environment.Due to pressure
The presence of dynamic balance tank, makes pile and system in barotropic state, effectively prevents oxygen from air
Slowly enter the possibility of cathode side.Further, pile is fundamentally solved and produces hydrogen sky interface
May.As negative electrode and anode are constantly in pressure balance, it is to avoid hydrogen is to cathode side
Diffusion, is also not result in that in fuel cell start-up the hydrogen sky interface of cathode side is formed.And then protect
The performance of card pile, extends the service life of fuel cell.
Description of the drawings
The structural representation of the fuel cell system that Fig. 1 is provided for one embodiment of the invention;
The halt control method of the fuel cell system that Fig. 2 is provided for another embodiment of the present invention
Schematic flow sheet.
In accompanying drawing:
Air compressor 11, hydrogen source 12, pile 13, air displacement unit 14, hydrogen row
Put device 15, air delivery pipe 11a, hydrogen delivery tube road 12a, air discharge pipe road 14a,
Hydrogen discharge pipeline 15a, humidifier 16, air filter 17, mass air flow sensor 18, section temperature
Device 19, radiator 20, the first air door 21, the second air door 22, hydrogen pneumatics power are put down
Weighing apparatus tank 23, discharge resistance 24, hydrogen gas tank 25, the first electromagnetic valve 26, the second electromagnetic valve 27,
3rd electromagnetic valve 28, hydrogen regulator 29, sideboard 231.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is made further in detail
Description.Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Fig. 1 shows the structural representation of the fuel cell system that one embodiment of the invention is provided,
As shown in figure 1, fuel cell system includes:
The fuel cell system of the present embodiment can be fuel cell system of the prior art, the combustion
Material battery system includes:Air compressor 11, hydrogen source 12, pile 13, air displacement unit
14th, hydrogen discharge device 15;
Wherein, air compressor 11 connects the negative electrode of pile 13 by air delivery pipe 11a,
Hydrogen source 12 connects the anode of pile 13, air displacement unit by hydrogen delivery tube road 12a
14 air outlet slits (i.e. air discharge ports) that pile 13 is connected by air discharge pipe road 14a,
Hydrogen discharge device 15 passes through the hydrogen outlet of hydrogen discharge pipeline 15a connection piles 13 (i.e.
Hydrogen discharge mouth);
Specifically, humidifier 16, and fuel cell are additionally provided with air delivery pipe 11a
System also includes being sequentially connected the air filter 17 of air compressor, mass air flow sensor 18, section
Warm device 19, radiator 20 etc..The annexation and prior art of each part in fuel cell system
The annexation all same of each part in middle fuel cell system, the present embodiment are not carried out to which in detail
Carefully.
In the present embodiment, fuel cell system also includes:First air door 21, the second air
Valve 22, hydrogen sky pressure balancing tank 23, discharge resistance 24;As shown in Figure 1.
First air door 21 of the present embodiment is arranged on the air delivery pipe 11a, is used
In blocking/turn off air delivery pipe 11a;Second air door 22 is arranged on air discharge pipe road
On 14a, for blocking/turning off air discharge pipe road 14a.
Air in the pile 13 of the A ends connection fuel cell system of the hydrogen sky pressure balancing tank 23
Outlet, in the pile 13 of the B ends connection fuel cell system of the hydrogen sky pressure balancing tank 23
Hydrogen outlet;In the hydrogen sky pressure balancing tank 23, side a and b passes through sideboard 231
Sealing separates;
A discharge resistance 24 is concatenated between the anode and negative electrode of the pile 13, the discharge resistance is used
The led to current value of pile is limited in discharging and consuming in pile, response speed is reduced, and then is controlled
Reaction temperature in pile processed, the localized hyperthermia occurred in being effectively reduced pile is to proton exchange
The damage of membrane electrode.
The resistance value of the discharge resistance 24 can be arranged according to the actual requirements, and the present embodiment does not enter to which
Row is limited.
Further, the hydrogen sky pressure balancing tank 23 shown in aforementioned Fig. 1 can be the blind of elliposoidal
Pipe.Wherein side a and b is located at two ends position respectively.
Additionally, in the present embodiment, the anode connection hydrogen delivery tube road 12a of aforesaid pile 13
One end;The other end connection hydrogen source 12 of hydrogen delivery tube road 12a, and convey in hydrogen
Hydrogen gas tank 25 is communicated with pipeline 12a also;Between the hydrogen gas tank 25 and the hydrogen source 12
Hydrogen partial transfer pipeline on be provided with for block hydrogen supply the first electromagnetic valve 26;
Hydrogen partial transfer pipeline 12a between the anode of the hydrogen gas tank 25 and the pile 13
On be disposed with hydrogen regulator 29, the second electromagnetic valve 27.
Additionally, the hydrogen outlet of pile 13 connects the one of hydrogen discharge pipeline 15a in the present embodiment
End, and be provided with the hydrogen discharge pipeline 15a for blocking the 3rd electromagnetism of hydrogen discharge
Valve 28.
It should be noted that the fuel cell system in the present embodiment also includes:Not shown in figure
Controller;The controller is all connected with the first electromagnetic valve 26, the second electromagnetic valve 27, the 3rd electromagnetic valve
28 and first air door 21, the second air door 22, stopping for fuel cell
Machine control strategy controls closure or the disconnection of above-mentioned each electromagnetic valve or air door, realizes each
The circulation of transfer pipeline is blocked;
The controller controls first electromagnetic valve 26, the second electromagnetism according to predetermined control strategy
Valve 27, the 3rd electromagnetic valve 28 and first air door 21, the second air door 22 are respective
Switch.
Aforesaid first air door and the second air door can be air pipe line sealing valve, it is ensured that
Air delivery pipe and the sealing after fuel cell system is shut down on air discharge pipe road.
The fuel cell system of above-described embodiment, can be used for by increasing in the fuel cell system
The first air door of air delivery pipe is blocked, and for blocking the of air discharge pipe road
Two air doors, realize stage air transfer pipeline and sky immediately when fuel cell system is shut down
Gas discharge pipe;Further discharge resistance is concatenated between the negative electrode and anode of pile, and then
During hydrogen and oxygen reaction in the pile, the led to current value of pile can be limited, reaction is reduced
Speed, can preferably control stack temperature, reduce localized hyperthermia to proton exchange membrane electrode in pile
Damage, while arranging hydrogen sky pressure balancing tank and preferably knows the hydrogen and oxygen in pile
Whether reaction is completed, and is capable of achieving the pressure balance of hydrogen delivery tube road and air delivery pipe, is protected
The pressure at both sides balance of card proton exchange membrane electrode.Thus, can the shutdown of effectively solving fuel cell
Afterwards, problem of the hydrogen to air side cavity seepage in pile.Due to the pile of fuel cell system
Interior sealed hydrogen is excessive relative to oxygen, and final cathode side oxygen will be consumed totally,
Pile is made to be in oxygen-free environment.Due to the presence of pressure balancing tank, pile and system are made in just
Pressure condition, effectively prevents oxygen from the possibility of cathode side is slowly entered from air.Further, pile from
The possibility for producing hydrogen sky interface is solved fundamentally.Put down as negative electrode and anode are constantly in pressure
Weighing apparatus state, it is to avoid diffusion of the hydrogen to cathode side, is also not result in the moon in fuel cell start-up
The hydrogen sky interface of pole side is formed.And then the performance of guarantee pile, extend the use longevity of fuel cell
Life.
Second aspect, the present invention also provide a kind of shutdown based on any of the above-described fuel cell system
Control method, as shown in Fig. 2 the halt control method may include following steps:
201st, after fuel cell system completes orderly closedown, block the air of fuel cell system
Transfer pipeline and air discharge pipe road, hydrogen discharge pipeline.
In the present embodiment, fuel cell system orderly closedown is it is understood that fuel cell system
After by halt instruction, a series of stopping process action can be performed, after being finished, can be recognized
To complete orderly closedown.
For example, block fuel cell system air delivery pipe and air discharge pipe road,
Hydrogen discharge pipeline, the action of the structure of the above-mentioned Fig. 1 of correspondence is:The control of fuel cell system
Device can cut out the first air door, the second air door for cutting out the fuel cell system, close
Close the 3rd electromagnetic valve to realize blocking air delivery pipe and air discharge pipe road, hydrogen discharge pipeline.
202nd, the hydrogen delivery tube road of fuel cell continues to supply hydrogen, the electricity to pile anode
The air of the hydrogen and the cathode cavity of the anode intracavity of heap is reacted, to consume the electricity
Oxygen in the cathode air side cavity of heap.
For example, controller can cut out first electromagnetic valve, make the hydrogen of fuel cell system
Gas tank continues to supply hydrogen to pile anode by hydrogen delivery tube road;Thus, it is ensured that fuel
The safe handling of battery system, and being capable of effective control pile reaction temperature.
Further, above-mentioned halt control method may also include following steps 203:
203rd, detect whether the sideboard of the hydrogen sky pressure balancing tank is moved in preset time period
It is dynamic, if not moving, block the hydrogen delivery tube road of fuel cell system.
For example, controller cuts out the second electromagnetic valve and is capable of achieving to block hydrogen delivery tube road.
In a particular application, abovementioned steps 201 and step 203 can be realized for controller, example
As controller detects whether the pile of fuel cell system quits work, monitoring control devices hydrogen pneumatics
Whether whether the sideboard of dynamic balance tank is moved in preset time period.
If the sideboard of hydrogen sky pressure balancing tank is moved in preset time period, it is appreciated that
It is the oxygen in the hydrogen and air in pile also reacting, and then hydrogen lateral pressure and sky
Gas lateral pressure is also not implemented balance, and then can not block hydrogen delivery tube road.
Certainly, if the sideboard of hydrogen sky pressure balancing tank does not change in preset time period,
It is believed that oxygen reaction in hydrogen and air, that is, has consumed in pile oxygen in air completely
Gas, and then the pressure of the negative electrode of pile, anode keeps balancing, therefore, sideboard is no longer moved
It is dynamic, thus, proton exchange membrane electrode uniform force in pile is can effectively ensure that, and is effectively prevented
Oxygen diffuses into pile.
It will be appreciated that when fuel cell system works certainly, the activity of hydrogen sky pressure balancing tank
Baffle plate is pushed to A ends, and the first air door and the second air door are opened.Work as fuel cell
During system stalls, close the first air door, the second air door, the first electromagnetic valve and
3rd electromagnetic valve.
Now, due to discharge resistance effect pile negative electrode intracavity air and anode intracavity hydrogen
Gas can be consumed continuation electric discharge simultaneously.And as anode intracavity hydrogen has the higher hydrogen gas tank of pressure
Persistently supply, the oxygen of final negative electrode intracavity is depleted, remaining nitrogen.The air hose for being sealed
The pressure on road also declines therewith, and hydrogen pipeline continues elevated pressures and causes hydrogen sky pressure balancing tank
Interior sideboard is moved to B ends, re-establishes balance.The process is until oxygen is depleted.
Said method is discharged to consume using discharge resistance and limits the led to current value of pile, reduces anti-
Speed is answered, makes stack temperature controllable, reduce damage of the localized hyperthermia to membrane electrode;Additionally,
All operations after shutdown are mechanically actuated, can complete in unmanned state is shut down;Enter one
Step ground, completes oxygen consumption from shutting down to, and pile negative electrode and anode pressure maintain balance always
There is no unbalance stress phenomenon in state, the proton exchange membrane electrode of pile;And complete to remain oxygen
After gas consumption electric discharge, pile is in barotropic state, effectively prevents oxygen from diffusing into pile.
The third aspect, the present invention also provide a kind of fuel battery engines, including any of the above-described institute
The fuel cell system stated.In addition, the present invention also provides a kind of fuel cell power source, such as mobile phone
Base station power, island power supply etc., the fuel cell power source may also include any of the above-described described
Fuel cell system.
Fourth aspect, the present invention also provide a kind of automobile, including any of the above-described described fuel electricity
Pond electromotor.
Finally it should be noted that:Various embodiments above only to illustrate technical scheme,
Rather than a limitation;Although being described in detail to the present invention with reference to foregoing embodiments,
It will be understood by those within the art that:Which still can be to described in foregoing embodiments
Technical scheme modify, or equivalent carried out to which part or all technical characteristic replace
Change;And these modifications or replacement, do not make the essence of appropriate technical solution depart from present invention power
Profit requires limited range.
Claims (10)
1. a kind of fuel cell system, including:Pile, the negative electrode connection air conveying of the pile
One end of pipeline, the one end on the air outlet slit connection air discharge pipe road of the pile;Its feature
It is also to include:The first air door being arranged on the air delivery pipe;
The second air door being arranged on the air discharge pipe road;
Air outlet slit in the A ends connection pile of hydrogen sky pressure balancing tank, the hydrogen pneumatics dynamic balance
Hydrogen outlet in the B ends connection pile of tank;
In the hydrogen sky pressure balancing tank, side a and b is separated by sideboard sealing;
A discharge resistance is concatenated between the anode and negative electrode of the pile.
2. system according to claim 1, it is characterised in that the hydrogen pneumatics dynamic balance
Blind pipe of the tank for elliposoidal.
3. system according to claim 1, it is characterised in that the anode of the pile connects
The one end on logical hydrogen delivery tube road;
The other end connection hydrogen source on the hydrogen delivery tube road, and on hydrogen delivery tube road also
It is communicated with hydrogen gas tank;On hydrogen partial transfer pipeline between the hydrogen gas tank and the hydrogen source
It is provided with for blocking the first electromagnetic valve that hydrogen is supplied;
Set on hydrogen partial transfer pipeline between the anode of the hydrogen gas tank and the pile successively
It is equipped with hydrogen regulator, the second electromagnetic valve.
4. system according to claim 3, it is characterised in that the hydrogen of the pile goes out
One end of mouth connection hydrogen discharge pipeline, and be provided with for blocking on the hydrogen discharge pipeline
3rd electromagnetic valve of hydrogen discharge.
5. system according to claim 4, it is characterised in that the fuel cell system
Also include:Controller;
First electromagnetic valve, the second electromagnetic valve, the 3rd electromagnetic valve and first air door,
Second air door is all connected with the controller;
The controller according to predetermined control strategy control first electromagnetic valve, the second electromagnetic valve,
3rd electromagnetic valve and first air door, the respective switch of the second air door.
6. a kind of based on the halt control method for weighing 1 to the arbitrary described fuel cell systems of power 5,
Characterized in that, including:
After fuel cell system orderly closedown, the air delivery pipe of fuel cell system is blocked
With air discharge pipe road, hydrogen discharge pipeline;And
The hydrogen delivery tube road of fuel cell continues to supply hydrogen to pile anode, the pile
The air of the hydrogen of anode intracavity and the cathode cavity is reacted, to consume the pile
Oxygen in the cavity of cathode air side.
7. method according to claim 6, it is characterised in that methods described also includes:
Detect whether the sideboard of the hydrogen sky pressure balancing tank is moved in preset time period,
If not moving, the hydrogen delivery tube road of fuel cell system is blocked.
8. the method according to claim 6 or 7, it is characterised in that described to block fuel
The air delivery pipe of battery system and air discharge pipe road, hydrogen discharge pipeline, including:
The controller of the fuel cell system cuts out the first air door, cuts out the fuel electricity
Second air door of cell system, the 3rd electromagnetic valve of closing;
Correspondingly, the hydrogen delivery tube road of the fuel cell continues to supply hydrogen to pile anode,
Including:
The controller cuts out first electromagnetic valve, passes through the hydrogen gas tank of fuel cell system
Hydrogen delivery tube road continues to supply hydrogen to pile anode;
The hydrogen delivery tube road for blocking fuel cell system, including:Close the second electromagnetic valve.
9. a kind of fuel battery engines, it is characterised in that including the claims 1 to power
Profit requires 5 arbitrary described fuel cell systems.
10. a kind of automobile, it is characterised in that send out including the fuel cell described in claim 9
Motivation.
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CN113793951A (en) * | 2021-09-10 | 2021-12-14 | 中国第一汽车股份有限公司 | Fuel cell system and shutdown control method |
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CN114300715A (en) * | 2021-12-31 | 2022-04-08 | 国家电投集团氢能科技发展有限公司 | Fuel cell system and control method thereof |
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