CN209344235U - A kind of fuel cell system shutdown electric discharge device - Google Patents
A kind of fuel cell system shutdown electric discharge device Download PDFInfo
- Publication number
- CN209344235U CN209344235U CN201920214783.1U CN201920214783U CN209344235U CN 209344235 U CN209344235 U CN 209344235U CN 201920214783 U CN201920214783 U CN 201920214783U CN 209344235 U CN209344235 U CN 209344235U
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- fuel cell
- air
- road
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model relates to a kind of fuel cell systems to shut down electric discharge device, including fuel cell pile, air road, hydrogen road and circulating pump, air road includes air filter, air flow meter, air inlet shutter, air compressor and humidifier, hydrogen road includes entering heap pressure sensor and low pressure hydrogen supply device with the sequentially connected hydrogen of the cathode of fuel cell pile, the hydrogen outlet of fuel cell pile connects hydrogen road dewatering exhaust mechanism, the junction that hydrogen enters the anode of heap pressure sensor and fuel cell pile is equipped with the first gas solenoid valve, first gas connects circulating pump with solenoid valve, air compressor accesses circulating pump after being connect with third gas with solenoid valve, hydrogen road dewatering exhaust mechanism connects the second gas solenoid valve, second gas connects circulating pump with solenoid valve, the outlet of humidifier connect after the 4th gas solenoid valve with circulating pump Connection；Compared with prior art, this patent can sufficiently avoid anode from surveying influence of the hydrogen sky interface to the service life.
Description
Technical field
The utility model relates to fuel cell system technical fields, shut down and discharge more particularly, to a kind of fuel cell system
Device.
Background technique
When fuel cell system is shut down, pile average voltage is higher, and high potential has bigger damage to the service life of pile
Evil, the pile service life will effectively be extended by rapidly reducing pile voltage.
On startup, the air side blowing air of system, hydrogen gas side leads to hydrogen to fuel cell system, if hydrogen gas side has air
(oxygen) exists, hydrogen in the case where being continually fed into, hydrogen by anode flow field formed one flowing hydrogen/air (hydrogen/
Oxygen) interface, finally it is pushed to the outlet of pile.Hydrogen/sky (hydrogen oxygen) interface can make oxygen reduction reaction exist simultaneously in anode and
Cathode leads to the presence that cathode catalysis layer surface forms a very high current potential and anode has reverse current, to cathode catalysis layer
Cause very serious decaying.Equally, after fuel cell system shutdown, if there are also remain in pile, accessory and pipeline
Hydrogen and oxygen, due to the presence of concentration gradient, the oxygen of cathode side penetrates into anode-side by proton exchange membrane, can also deposit
At hydrogen/sky (hydrogen oxygen) interface, this be a comparison slowly but more permanent process, can also be caused to cathode catalysis layer
Decaying.The fuel cell system of the prior art there has been no can be avoided shut down after and pile anode side hydrogen/sky when being switched on next time
The method of the generation at (hydrogen oxygen) interface influences the service life of pile and the closure of whole system.
Utility model content
The purpose of this utility model is exactly to provide a kind of fuel cell to overcome the problems of the above-mentioned prior art
System-down electric discharge device.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of fuel cell system shuts down electric discharge device, including fuel cell pile, connect respectively with fuel cell pile
Air road, hydrogen road and the circulating pump being arranged between air road and hydrogen road, the air road includes sequentially connected
The sun of air filter, air flow meter, air inlet shutter, air compressor and humidifier, humidifier and fuel cell pile
Pole connection, the outlet of humidifier connect with air exhaust mechanism, the hydrogen road include with the cathode of fuel cell pile according to
The hydrogen of secondary connection enters heap pressure sensor and low pressure hydrogen supply device, and the hydrogen outlet of fuel cell pile is connected with hydrogen road row
Water exhaust gear, the junction that hydrogen enters the anode of heap pressure sensor and fuel cell pile are equipped with the first gas solenoid valve,
First gas solenoid valve connects circulating pump, and air compressor accesses circulating pump, hydrogen road row after being connect with third gas with solenoid valve
Water exhaust gear connects the second gas solenoid valve, and the second gas solenoid valve connects circulating pump, and the outlet of humidifier connects the 4th gas
It is connect with after solenoid valve with circulating pump.
Preferably, oxygen concentration sensor is equipped between the humidifier and fuel cell pile.
Preferably, the air exhaust mechanism includes the sequentially connected air back pressure valve in outlet, the air with humidifier
Last row pipe.
Preferably, the hydrogen road dewatering exhaust mechanism includes hydrogen the circulation path water segregator, hydrogen air passage drain valve and hydrogen
The hydrogen outlet of gas circuit exhaust valve, fuel cell pile connects hydrogen the circulation path water segregator, the side of hydrogen the circulation path water segregator
It being separately connected with hydrogen air passage drain valve, hydrogen road exhaust valve, the other side is connect with the second gas with solenoid valve, hydrogen air passage drain valve,
Hydrogen road exhaust valve is connect with air last row pipe.
Preferably, the circulating pump uses the adjustable electric circulating pump of revolving speed.
Preferably, the fuel cell pile is equipped with to detect the voltage of fuel cell pile, the voltage of electric current
Sensor, current sensor.
Preferably, intercooler is equipped between the air compressor and humidifier.
Compared with prior art, the utility model has the advantage that
One, the utility model is before shutting down electric discharge and starting, by the opening and closing of 4 gas solenoid valves, by circulating pump
Switch to air circulation road from hydrogen the circulation path；After shutting down electric discharge, then pass through the opening and closing of 4 gas solenoid valves, will recycle
Pump switchs to hydrogen the circulation path from air circulation road, and the utility model makes full use of the effect of circulating pump, after a shutdown, passes through acceleration
Pile voltage decrease speed quickly forms rich nitrogen environment, and anode surveys hydrogen sky interface to the service life when substantially avoiding starting next time
Influence；
Two, the utility model enters heap side equipped with pressure sensor in the hydrogen of fuel cell system, can be used as feedback quantity, controls
System fills into the pressure value of hydrogen, is conducive to the control precision for improving Hydrogen Vapor Pressure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of fuel cell system of the utility model shuts down electric discharge device；
Fig. 2 is the workflow schematic diagram that a kind of fuel cell system of the utility model shuts down electric discharge device；
Shown in figure label:
1, air filter, 2, air main road flowmeter, 3, air inlet shutter, 4, air compressor, 5, intercooler, 6, increasing
Wet device, 7, oxygen concentration sensor, 8, fuel cell pile, 9, air back pressure valve, 10, air last row pipe, 11, hydrogen the circulation path point
Hydrophone, 12, hydrogen air passage drain valve, 13, hydrogen road exhaust valve, 14, hydrogen enter heap pressure sensor, 15, low pressure hydrogen supply device,
16, the first gas solenoid valve, the 17, second gas solenoid valve, 18, circulating pump, 19, third gas solenoid valve, the 20, the 4th gas electricity consumption
Magnet valve, 21, voltage sensor, 22, current sensor.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.Obviously, described embodiment
It is a part of the embodiment of the utility model, rather than whole embodiments.Based on the embodiments of the present invention, this field is general
It is practical new all to should belong to this for logical technical staff every other embodiment obtained without making creative work
The range of type protection.
As shown in Figure 1, the utility model relates to a kind of fuel cell system shutdown electric discharge device, including air filter 1,
Air inlet shutter 3, air compressor 4, humidifier 6, fuel cell pile 8, air back pressure valve 9, oxygen concentration sensor 7, circulation
Pump 18, hydrogen enter heap pressure sensor 14, low pressure hydrogen supply device 15 and four gas solenoid valves.
Air filter 1 is connect after connecting air flow meter 2 with air inlet shutter 3, and air inlet shutter 3 is mounted on air pressure
On contracting machine 4, air compressor 4 is connect by intercooler 5 with humidifier 6, and humidifier 6 is connect with the cathode of fuel cell pile 8.
Oxygen concentration sensor 7 is additionally provided between humidifier 6 and fuel cell pile 8.The anode of fuel cell pile 8 connects hydrogen supply machine
Structure, hydrogen supply mechanism include entering heap pressure sensor 14 and low pressure hydrogen supply with the sequentially connected hydrogen of the anode of fuel cell pile 8
Device 15.The hydrogen outlet of fuel cell pile 8 is connected with hydrogen the circulation path water segregator 11, and the one of hydrogen the circulation path water segregator 11
Side is separately connected with hydrogen air passage drain valve 12, hydrogen road exhaust valve 13.Hydrogen air passage drain valve 12, hydrogen road exhaust valve 13 and air
Last row pipe 10 connects, and humidifier 6 is connect with air last row pipe 10 by air back pressure valve 9.
The junction that hydrogen enters the anode of heap pressure sensor 14 and fuel cell pile 8 is equipped with the first gas solenoid valve
16, the first gas connects circulating pump 18 with solenoid valve 16；Air compressor 4 accesses circulating pump after connecting with third gas solenoid valve 19
18.The other side of hydrogen the circulation path water segregator 11 connects the second gas solenoid valve 17, and the second gas connects circulating pump with solenoid valve 17
18；It is connect after outlet connection the 4th gas solenoid valve 20 of humidifier 6 with circulating pump 18.Preferably, circulating pump 18 uses revolving speed
Adjustable electric circulating pump.
The workflow of the utility model is as shown in Fig. 2, its main contents are as follows:
Atmosphere enters fuel cell system by air filter 1, and air flow meter 2 can be measured into fuel cell system
Air mass flow, air compressor 4 compress air to system needs pressure and flow.Before shutting down discharge process, air pressure
Contracting machine 4 will stop working, and air inlet shutter 3 and air back pressure valve 9 simultaneously close off, the first gas solenoid valve 16 and the second gas electricity consumption
Magnet valve 17 is closed, and third gas solenoid valve 19 and the 4th gas solenoid valve 20 are opened, and air road forms a closed sky at this time
Between, circulating pump 18 is transferred to air road from hydrogen road.
Low pressure hydrogen supply device 15 persistently fills into the hydrogen that pressure is P, closes 12 He of hydrogen air passage drain valve according to policy mandates
Hydrogen road exhaust valve 13 sets the revolving speed RPM of circulating pump 18.Because there are oxygen and hydrogen for the cathode and anode of fuel cell pile 8
Gas, 8 voltage of fuel cell pile is higher at this time, quickly to the low current I of the bus load calibration of fuel cell pile 8, such as benefit
With electrical load devices carry out load low current (if on fuel-cell vehicle can by DC/DC load low current), current value by
Current sensor 22 monitors, and pulls down the total voltage of fuel cell pile 8, shuts down electric discharge and starts.
Hydrogen road hydrogen persistently fills into, and starts 18 forced circulation air road of circulating pump at this time, by fuel cell pile 8, sky
Air circulation in air compressor 4, intercooler 5, humidifier 6 and pipeline is got up, and air road oxygen rapidly depletes.
Pile total voltage value V is monitored by voltage sensor 21, when triggering lower limit, stops electric current load.Pass through sky simultaneously
The oxygen concentration sensor 7 of gas circuit monitors the concentration of air road oxygen, when oxygen concentration drops to certain value Φ, stops circulating pump
18 and low pressure hydrogen supply device 15 work.
As long as the cathode and anode of fuel cell pile 8 has oxygen and hydrogen, certain voltage, generally, fuel will be generated
The total voltage value V of battery stack 8 first triggers lower limit value, stops loading current, then when oxygen concentration drops to certain value Φ, circulation
Pump 18 stops working.
After circulating pump 18 stops working, shut down discharge regime terminate, at this time air this no oxygen of roadbed exist, hydrogen by
In the reason of the concentration gradient and pressure difference, air road will be penetrated into from hydrogen road；Original of the nitrogen on air road due to concentration gradient
Cause will penetrate into hydrogen road from air road.
The utility model passes through cutting for solenoid valve using the design for increasing by four gas solenoid valves and oxygen concentration sensor
It changes, realizes circulating pump in the different ringings of hydrogen and air road.It is small by loading after fuel cell system shuts down electric discharge
Electric current, quick pull-down pile high potential, while circulating pump is switched into air road, forced circulation pile and air hose from hydrogen road
Air in road rapidly depletes oxygen, forms rich nitrogen environment on air road, avoid hydrogen/sky to the greatest extent using hydrogen strategy is mended
The generation at (hydrogen oxygen) interface, and then the service life of pile can be improved.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, any staff for being familiar with the art within the technical scope disclosed by the utility model, can be readily occurred in various
Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this is practical
Novel protection scope should be subject to the protection scope in claims.
Claims (7)
1. a kind of fuel cell system shuts down electric discharge device, which is characterized in that including fuel cell pile (8), respectively with fuel
Air road, hydrogen road and the circulating pump (18) being arranged between air road and hydrogen road of battery stack (8) connection, the sky
Gas circuit includes sequentially connected air filter (1), air flow meter (2), air inlet shutter (3), air compressor (4) and increases
Wet device (6), humidifier (6) are connect with the anode of fuel cell pile (8), and the outlet of humidifier (6) and air exhaust mechanism connect
Connect, the hydrogen road include enter with the sequentially connected hydrogen of cathode of fuel cell pile (8) heap pressure sensor (14) and
Low pressure hydrogen supply device (15), the hydrogen outlet of fuel cell pile (8) are connected with hydrogen road dewatering exhaust mechanism, and hydrogen enters stacking pressure
The junction of force snesor (14) and the anode of fuel cell pile (8) is equipped with the first gas solenoid valve (16), the first gas electricity consumption
Magnet valve (16) connects circulating pump (18), and air compressor (4) accesses circulating pump (18) after being connect with third gas with solenoid valve (19),
Hydrogen road dewatering exhaust mechanism connects the second gas with solenoid valve (17), and the second gas connects circulating pump (18) with solenoid valve (17), increases
The outlet of wet device (6) connects the 4th gas and is connect afterwards with circulating pump (18) with solenoid valve (20).
2. a kind of fuel cell system according to claim 1 shuts down electric discharge device, which is characterized in that the humidifier
(6) oxygen concentration sensor (7) are equipped between fuel cell pile (8).
3. a kind of fuel cell system according to claim 1 shuts down electric discharge device, which is characterized in that the air row
Mechanism of qi structure includes and the sequentially connected air back pressure valve (9) in the outlet of humidifier (6), air last row pipe (10).
4. a kind of fuel cell system according to claim 3 shuts down electric discharge device, which is characterized in that the hydrogen road
Dewatering exhaust mechanism includes hydrogen the circulation path water segregator (11), hydrogen air passage drain valve (12) and hydrogen road exhaust valve (13), fuel
The hydrogen outlet of battery stack (8) connects hydrogen the circulation path water segregator (11), the side of hydrogen the circulation path water segregator (11) and hydrogen
Air passage drain valve (12), hydrogen road exhaust valve (13) are separately connected, and the other side is connect with the second gas with solenoid valve (17), hydrogen road
Drain valve (12), hydrogen road exhaust valve (13) are connect with air last row pipe (10).
5. a kind of fuel cell system according to claim 1 shuts down electric discharge device, which is characterized in that the circulating pump
(18) the adjustable electric circulating pump of revolving speed is used.
6. a kind of fuel cell system according to claim 1 shuts down electric discharge device, which is characterized in that the fuel electricity
Pond pile (8) is equipped with to detect the voltage of fuel cell pile (8), voltage sensor (21), the current sensor of electric current
(22)。
7. a kind of fuel cell system according to claim 1 shuts down electric discharge device, which is characterized in that the air pressure
Intercooler (5) are equipped between contracting machine (4) and humidifier (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920214783.1U CN209344235U (en) | 2019-02-20 | 2019-02-20 | A kind of fuel cell system shutdown electric discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920214783.1U CN209344235U (en) | 2019-02-20 | 2019-02-20 | A kind of fuel cell system shutdown electric discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209344235U true CN209344235U (en) | 2019-09-03 |
Family
ID=67762487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920214783.1U Active CN209344235U (en) | 2019-02-20 | 2019-02-20 | A kind of fuel cell system shutdown electric discharge device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209344235U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687000A (en) * | 2019-02-20 | 2019-04-26 | 河南豫氢动力有限公司 | A kind of fuel cell system shuts down electric discharge device and method |
| CN110854414A (en) * | 2019-10-23 | 2020-02-28 | 中国第一汽车股份有限公司 | Fuel cell anode drainage method and device |
| CN112563536A (en) * | 2020-12-04 | 2021-03-26 | 武汉格罗夫氢能汽车有限公司 | Hydrogen energy automobile fuel cell system and control method thereof |
| 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 |
| CN114335609A (en) * | 2021-12-30 | 2022-04-12 | 重庆长安新能源汽车科技有限公司 | Air purging system for fuel cell passenger vehicle electric pile packaging box and vehicle |
| CN115663241A (en) * | 2022-12-14 | 2023-01-31 | 佛山市清极能源科技有限公司 | Method for monitoring service life of fuel cell stack |
-
2019
- 2019-02-20 CN CN201920214783.1U patent/CN209344235U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687000A (en) * | 2019-02-20 | 2019-04-26 | 河南豫氢动力有限公司 | A kind of fuel cell system shuts down electric discharge device and method |
| CN109687000B (en) * | 2019-02-20 | 2023-11-03 | 河南豫氢动力有限公司 | Shutdown discharging device and method for fuel cell system |
| CN110854414A (en) * | 2019-10-23 | 2020-02-28 | 中国第一汽车股份有限公司 | Fuel cell anode drainage method and device |
| CN112563536A (en) * | 2020-12-04 | 2021-03-26 | 武汉格罗夫氢能汽车有限公司 | Hydrogen energy automobile fuel cell system and control method thereof |
| 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 |
| CN114335609A (en) * | 2021-12-30 | 2022-04-12 | 重庆长安新能源汽车科技有限公司 | Air purging system for fuel cell passenger vehicle electric pile packaging box and vehicle |
| CN114335609B (en) * | 2021-12-30 | 2023-05-23 | 重庆长安新能源汽车科技有限公司 | Air purging system for fuel cell passenger car galvanic pile packaging box and vehicle |
| CN115663241A (en) * | 2022-12-14 | 2023-01-31 | 佛山市清极能源科技有限公司 | Method for monitoring service life of fuel cell stack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209344235U (en) | A kind of fuel cell system shutdown electric discharge device | |
| CN109687000A (en) | A kind of fuel cell system shuts down electric discharge device and method | |
| CN208157535U (en) | A kind of air supply system of fuel cell system | |
| CN110148768A (en) | A kind of air supply control method of fuel cell system | |
| CN203326036U (en) | Cathode exhaust gas recirculation system used for proton exchange membrane fuel cell (PEMFC) | |
| CN111082098A (en) | Fuel cell system shutdown method | |
| JP6037851B2 (en) | Control method of fuel cell system | |
| CN103050723A (en) | Cathode exhaust recirculating system for proton exchange membrane fuel cell | |
| CN105186016A (en) | Electrically controlled hydrogen-spraying pressure regulating device of fuel cell system | |
| CN111969227A (en) | Vehicle-mounted fuel cell water management system and control method thereof | |
| CN113097535A (en) | Water heat management system of self-humidifying fuel cell and control method thereof | |
| CN110048147B (en) | All-vanadium redox flow battery pipeline system with liquid mixing function | |
| CN112701324A (en) | Control method of fuel cell injection device with proportional valve | |
| CN100527508C (en) | Fuel cell system and liquid discharging method for the same | |
| CN108039504A (en) | One proton exchanging film fuel battery shutdown control system and method | |
| CN115036540B (en) | Fuel cell system shutdown method | |
| CN115360387B (en) | Anode water quantity control method of fuel cell system | |
| CN112133940A (en) | Air path control system and method for fuel cell system | |
| CN113113642A (en) | Fuel cell hydrogen injection ejector and control method thereof | |
| CN113130945A (en) | Fuel cell stack performance recovery method and system | |
| CN208489292U (en) | A kind of fuel cell pile hydrogen circulation device | |
| CN109728326B (en) | Fuel gas system of fuel cell and vehicle | |
| CN211426437U (en) | Device capable of testing tail exhaust hydrogen concentration and hydrogen leakage quantity in series-parallel mode on line | |
| CN217933893U (en) | Cathode purging system of single-pile fuel cell with long service life | |
| CN209526158U (en) | Fuel cell test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |