CN219832715U - Humidification device and fuel cell system - Google Patents

Abstract

The utility model discloses a humidifying device and a fuel cell system, which comprise a main body, an air inlet channel, a baffle plate and a heating device, wherein the top end of the main body is provided with a first opening, a second opening and a blocking device; the main body is also provided with a water diversion channel for introducing liquid water into the main body; the air inlet channel passes through the first opening and extends into the main body, the air outlet end of the air inlet channel is provided with a gas distribution device, and the gas distribution device is provided with a plurality of openings; the baffle is movably connected with the air inlet channel and is positioned between the second open hole and the through hole of the blocking device; the heating device is fixedly connected with the main body and is communicated with the inside of the main body. The humidifying device is simple in structure, compact in size and highly integrated, can ensure that hydrogen and nitrogen are sufficiently humidified, is suitable for different working conditions, and improves the performance and service life of a system.

Description

Humidification device and fuel cell system

Technical Field

The utility model relates to the field of fuel cells, in particular to a humidifying device for humidifying hydrogen-nitrogen mixed gas and a fuel cell system.

Background

The hydrogen energy is widely applied to the field of energy application by virtue of high-efficiency cleaning, zero carbon emission and the like, however, the problems of high cost and large danger coefficient exist in the field of hydrogen storage, transportation and supply chains; because ammonia is a carbon-free hydrogen-rich energy carrier, and is easy to transport after liquefaction, the development of the ammonia fuel cell based on the principle of hydrogen production by ammonia decomposition has very good economic benefit and sustainable development value. The core component membrane electrode of the fuel cell and the bipolar plate form an air-cooled electric pile through serial connection, and the current air-cooled electric pile adopts a perfluorosulfuric acid proton membrane, and in the working process of the cell, the proton membrane needs to keep proper water content of the membrane to allow hydrated protons to pass through the proton exchange membrane to participate in electrochemical reaction; therefore, the mixed gas of hydrogen and nitrogen passing through the air-cooled reactor needs to be humidified to improve the relative humidity of the hydrogen and the nitrogen and maintain the water content of the proton membrane; the existing proton exchange membrane fuel cell adopts an external humidifying device to make gas pass through the humidifying device and collide and absorb water molecules in the humidifying device so as to achieve the humidifying effect, and the water molecules in the humidifying device are mainly formed by exchanging hot and humid gas generated by an air cooling reactor reaction with dry air.

Disclosure of Invention

Aiming at the problems that in the prior art, in the process of humidifying the hydrogen and the nitrogen passing through the air-cooled reactor, the span of the gas humidifying effect is large, and the continuous changing working condition of the fuel cell in operation cannot be adapted in time, so that the operation effect and the service life of the air-cooled reactor are influenced; and the existing humidifying method can not continuously humidify hydrogen and nitrogen and can not meet the defect of humidification of the air-cooled stack fuel cell with low power; the humidifying device and the fuel cell system can humidify the hydrogen and the nitrogen timely and fully, are full in humidifying effect and high in humidifying efficiency, are safe in operation process and can continuously humidify the hydrogen and the nitrogen.

The technical scheme adopted for solving the technical problems is as follows: the humidifying device comprises a main body, an air inlet channel, a baffle plate and a heating device, wherein a first opening, a second opening and a blocking device are arranged at the top end of the main body, the blocking device is positioned in the main body, a through hole is formed in the blocking device, and the second opening is communicated with the through hole; the main body is also provided with a water diversion channel for introducing liquid water into the main body; the air inlet channel passes through the first opening and extends into the main body, the air outlet end of the air inlet channel is provided with a gas distribution device, and the gas distribution device is provided with a plurality of openings; when the main body is filled with liquid water, the gas distribution device on the gas inlet channel is immersed in the liquid water in the main body; the baffle is movably connected with the air inlet channel and is positioned between the second open hole and the through hole of the blocking device; the heating device is fixedly connected with the main body and is communicated with the inside of the main body.

Further, the cross-sectional shape of the blocking device corresponds to the cross-sectional shape of the main body, and the blocking device and the top end of the main body form a closed structure.

Further, a through hole is formed in the center of the bottom surface of the blocking device, and the bottom surface of the blocking device is inclined.

Further, the air inlet pipe extends into the interior of the main body after passing through the through hole on the blocking device.

Further, a second through hole is formed in the baffle, the baffle is movably sleeved on the air inlet channel through the second through hole, and the baffle is located in a closed structure formed by the blocking device and the top end of the main body.

Further, the baffle is in an inclined shape.

Further, the inclination angle of the baffle plate is 30-40 degrees.

Further, a liquid level detection device is arranged on the main body, and the liquid level detection device is also communicated with the water storage system.

Further, the main body is communicated with the induction system through the second opening, the induction system comprises a safety valve, a temperature sensor, a humidity sensor and a pressure sensor, and the safety valve is sequentially communicated with the temperature sensor, the humidity sensor and the pressure sensor.

The utility model also discloses a fuel cell system comprising the humidifying device, which further comprises:

a gas supply system; the gas supply system is used for supplying hydrogen and nitrogen gas to the humidifying device,

pile system: the electric pile system is used for converting chemical energy of gas discharged from the humidifying device into electric energy,

separation device: the separation device is communicated with the gas inlet of the electric pile system and the gas outlet of the electric pile system at the same time, and can separate the gas discharged from the electric pile system from the liquid and reintroduce the separated gas into the electric pile system.

According to the humidifying device and the fuel cell system, the heating device and the baffle are integrated in the main body, and the air outlet end of the air inlet channel is immersed in the liquid water, so that the air can be sufficiently and continuously humidified, the bubble impurities in the humidified mixed gas can be timely removed after humidification, the volume is compact, the integration degree is high, the humidifying device and the fuel cell system can be fully integrated with an air-cooled stack fuel cell system, and hydrogen and nitrogen can be sufficiently humidified and the liquid water and bubbles are not contained in the hydrogen and nitrogen; the humidity span of the humidified gas is reduced, the liquid level detection device is arranged on the humidifying device, the liquid content in the device can be adjusted according to the humidity of the discharged gas, so that different types of pile systems can be responded quickly, the changing working condition can be met, the humidifying device is also suitable for the humidifying requirement of a low-power fuel cell, and the performance and the service life of the fuel cell are improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the embodiments will be briefly described, and it will be apparent that the drawings in the following description are some embodiments of the present utility model and that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a humidifying device according to the present utility model;

fig. 2 is a schematic view of a humidifying device according to another embodiment of the present utility model;

fig. 3 is a sectional view showing the internal structure of the humidifying device according to the present utility model;

FIG. 4 is a schematic diagram of the connection relationship between the humidifying device and the water storage system and sensing system according to the present utility model;

fig. 5 is a schematic view of the structure of the fuel cell system according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 5, the humidifying device according to the present utility model includes a main body 1, an air inlet passage 11, a baffle 12, and a heating device 13, and is characterized in that: a first opening 101, a second opening 102 and a blocking device 103 are arranged on the top end of the main body 1, the blocking device 103 is positioned in the main body, a through hole 104 is formed in the blocking device 10, and the second opening 102 is communicated with the through hole 104; the main body 1 is also provided with a water diversion channel 105 for leading liquid water into the main body 1; the air inlet channel 11 passes through the first opening 101 and extends into the interior of the main body 1, the air outlet end 110 of the air inlet channel 11 is provided with a gas distribution device 14, and a plurality of openings are arranged on the gas distribution device 14; when the main body 1 is filled with liquid water, the gas distribution means 14 of the gas inlet passage 11 is immersed in the liquid water inside the main body 1; the baffle 12 is movably connected with the air inlet channel 11, and the baffle 12 is positioned between the second opening 102 and the through hole 104 of the blocking device; the heating device 13 is fixedly connected with the main body 1 and communicates with the inside of the main body 1. This humidification device is through at inside heating device and the baffle of integrating of main part to with the end submergence of giving vent to anger of air inlet channel in liquid water, thereby can fully and continuously moisten gas, in time get rid of the bubble impurity in the mixed gas after the humidification, compact volume and integrated degree are high, and humidification effect is abundant, has reduced the humidity span of gaseous after the humidification, can deal with the fuel cell system under the operating mode of change, also is applicable to the humidification demand of low-power fuel cell, has promoted fuel cell's performance and life-span.

As shown in fig. 1 to 3, the main body 1 has a cylindrical structure, a first opening 101, a second opening 102 and a third opening 106 are provided at the top of the main body 1, the first opening 101 is located at a middle position of the top of the main body 1, the second opening 102 and the third opening 106 are respectively located at two sides of the first opening 101, an exhaust pipe 107 is provided on the second opening 102, the third opening 106 is communicated with the water diversion channel 105, and the exhaust pipe 107 is used for discharging the humidified hydrogen and nitrogen out of the main body 1; the blocking device 103 is embedded in the main body 1 and is connected with the top of the main body 1, the cross section of the blocking device 103 is circular, the cross section of the blocking device 103 corresponds to the cross section of the main body 1, specifically, the blocking device 103 is of an annular columnar structure, the through hole 104 is arranged in the center of the bottom surface of the blocking device 103, the blocking device 103 and the top of the main body 1 form a closed cavity, and the cavity is communicated with the inside of the main body 1 through the through hole 104 of the blocking device 103; in order to enable the liquid to rapidly flow out of the blocking device 103 through the through hole 104, improve the purity of the humidified hydrogen and nitrogen gas, and improve the working efficiency of the humidifying device, it is preferable that the bottom surface of the blocking device 103 is in an inclined shape, and the inclination angle of the bottom surface of the blocking device 103 is 30 ° to 40 °, for example, 35 °; the diameter of the through hole 104 is in the range of 3 to 6 cm, for example 5 cm.

The air inlet channel 11 is of a cylindrical tubular structure, one end of the air inlet channel 11 is communicated with a hydrogen and nitrogen input end, the other end of the air inlet channel 11 is communicated with the interior of the main body 1, and the air inlet channel 11 is used for guiding hydrogen and nitrogen into the interior of the main body 1; specifically, the air inlet channel 11 passes through the first opening 101 and the through hole 104 and then extends into the main body 1; the circular disc-shaped structure of the baffle plate 12, the middle of the baffle plate 12 is provided with a second through hole 121, the baffle plate 12 is movably sleeved on the air inlet channel 11 through the second through hole 121, the baffle plate 12 is positioned in a closed structure formed by the blocking device 103 and the top of the main body 1, and the distance between the baffle plate 12 and the through hole 104 can be adjusted according to production requirements, so that the humidifying effect can be adjusted according to the gas content, and the production flexibility of the humidifying device is improved; the baffle 12 is used for blocking bubbles in the humidified mixed gas entering from the through hole 104, so that the bubbles can be cooled to form liquid after encountering the baffle 12; the cooled liquid then re-enters the inside of the main body 1 through the through hole 104 on the bottom surface of the blocking device 103 for recycling, so as to remove the content of bubble impurities in the humidified hydrogen and nitrogen, thereby improving the purity of the humidified hydrogen and nitrogen; because the bottom surface of blocking device 103 is the slope shape, the liquid after cooling down under the action of gravity can flow through more fast the through-hole 104 and get into inside the main part 1, can get rid of the bubble in the gaseous mixture more soon like this, also can make the humidification effect after cooling down liquid can continue to mix with follow-up hydrogen nitrogen gas, improved humidification efficiency of humidification device and also reduced the energy consumption loss of system.

The air inlet channel 11 is connected with the hydrogen and nitrogen output end, one end of the air inlet channel 11, which is connected with the hydrogen and nitrogen output end, extends outwards and protrudes out of the main body 1, one end of the air inlet channel 11, which is connected with the hydrogen and nitrogen output end, is connected with the hydrogen and nitrogen output end through a corresponding connecting device, the other end of the air inlet channel 11 is provided with a gas distribution device 14, specifically, the gas distribution device 14 has a circular structure, the shape of the gas distribution device 14 corresponds to the cross-section shape of the air inlet channel 11, the gas distribution device 14 is embedded in the air inlet channel 11, a plurality of openings 141 are symmetrically and uniformly arranged on the gas distribution device 14, the shapes among the openings 141 correspond to each other, the gas distribution device 14 is used for fully mixing the hydrogen and nitrogen after forming bubbles, compared with the liquid after the hydrogen and nitrogen are directly introduced into the liquid, the hydrogen and the liquid are fully fused through the gas distribution device 14, so that the hydrogen and the nitrogen can be fully and uniformly liquefied, the humidifying effect span after the hydrogen and nitrogen humidifying effect is reduced, and the humidifying effect is improved; more specifically, when the main body 1 is filled with a liquid, one end of the air inlet channel 11 provided with the gas distribution device 14 and the gas distribution device 14 are immersed in the liquid together, and the hydrogen and nitrogen gas passes through the gas distribution device 14 to form bubbles and then directly enter the liquid to complete liquefaction of the hydrogen and nitrogen gas; in order to discharge the liquefied hydrogen and nitrogen out of the humidifying device for subsequent treatment of the hydrogen and nitrogen, specifically, a plurality of fourth openings 100 are formed in a side wall of the main body 1, the heating device 13 is correspondingly communicated with the inside of the main body 1 through the fourth openings 100, the shape of the heating device 13 corresponds to the cross-sectional shape of the fourth openings 100, the heating device 13 is used for heating the liquid in the main body 1 so as to heat and evaporate the hydrogen and nitrogen mixed in the liquid, and then the hydrogen and nitrogen is discharged through the through holes 104 on the blocking device 103 and then through the exhaust pipeline 107 of the second opening 102, so that pure humidified hydrogen and nitrogen is obtained; in order to improve the heating effect of the heating device 13, preferably, the fourth opening 100 is located on the main body 1 near the gas distribution device 14, and the installation direction of the heating device 13 is perpendicular to the extending direction of the main body 1, so that the heating device 13 directly faces the gas distribution device 14, and the heating effect after the mixture of the hydrogen and nitrogen and the liquid is improved, so that the hydrogen and nitrogen can be quickly heated and gasified to be discharged from the second opening 102, more preferably, the heating device 13 extends toward the inside of the main body 1 along the extending direction of the fourth opening 100 and extends into the inside of the main body 1, when the liquid is disposed in the main body 1, the heating device 13 is immersed in the liquid and directly heats the liquid, so that the liquid and the hydrogen and nitrogen are quickly heated and evaporated, and then, the bubbles formed after the heating of the hydrogen and nitrogen and the liquid are separated by the baffle 12, so as to obtain the humidified hydrogen and nitrogen.

Before the humidifying device operates, liquid water is introduced into the main body 1 through the water diversion channel 105 communicated with the third opening 106, so that the liquid water submerges the end part of the air inlet channel 11 and the gas distribution device 14 positioned at the end part of the air inlet channel 11; introducing hydrogen and nitrogen into the main body 1 through the air inlet channel 11, introducing the hydrogen and nitrogen into the gas distribution device 14 at the tail end of the air inlet channel 11 through the air inlet channel 11 and through the through holes 104 of the blocking device 103, forming bubbles under the action of the gas distribution device 14 and dissolving the bubbles into liquid water, simultaneously starting the heating device 13, heating the liquid water dissolved with the hydrogen and nitrogen by the heating device 13 to heat the liquid water so as to evaporate the liquid water containing the hydrogen and nitrogen at the same time, forming mixed gas containing the hydrogen and nitrogen and water vapor, flowing the mixed gas containing the hydrogen and nitrogen and the water vapor towards the direction close to the second opening 102, introducing the mixed gas containing the hydrogen and nitrogen and the water vapor into the blocking device 103 through the through holes 104 of the blocking device 103, contacting with the baffle 12, cooling the water vapor bubbles in the mixed gas after contacting with the baffle 12, forming the liquid water, flowing downwards into the blocking device 103 along the baffle 12, finally flowing the mixed gas into the main body 1 again through the through holes 104 of the blocking device 103, and humidifying the second opening 102, and subsequently discharging the mixed gas and the water vapor through the second opening 102; more specifically, the liquid water is deionized water, in order to better realize separation and cyclic utilization of vapor bubbles and improve the humidifying efficiency of the humidifying device, preferably, the baffle 12 is in an inclined shape, and the inclination angle of the baffle 12 is 30 ° to 60 °, for example 30 °, so that the vapor bubbles can quickly flow downwards under the action of gravity after hitting the baffle 12, and the vapor bubbles in the mixed gas can be quickly separated from the hydrogen and nitrogen.

In order to improve the automation degree of the humidifying device and further improve the humidifying efficiency of the humidifying device, the humidifying device can humidify hydrogen and nitrogen for a long time effectively, so that the humidifying device is suitable for air-cooled stacks with different powers; preferably, a liquid level detection device 15 is disposed on the main body 1, the liquid level detection device 15 is communicated with the inside of the main body 1, the liquid level detection device 15 can detect the content of liquid water in the main body 1, and the content of the liquid water in the main body 1 is adjusted according to the content of the liquid water in the main body 1 so as to meet the humidification requirement of hydrogen and nitrogen; for example, when the liquid water content in the main body 1 is low and the gas distribution device 14 on the gas inlet pipe 11 cannot be used for overflowing, the liquid level detection device 15 can automatically feed back water level information to the water storage system 2, drive the water storage system 2 to supplement deionized water into the main body 1 through the water diversion channel 105 and the third opening 106, when the liquid water content in the main body 1 is high and the humidity in the hydrogen and nitrogen gas discharged from the main body 1 is too high, the liquid level detection device 15 can also automatically feed back water level information to the water storage system 2 to stop the water storage device from supplementing deionized water into the main body 1, and drive the water storage system to supplement deionized water into the main body 1 when the deionized water in the main body 1 needs to be supplemented so as to meet the humidification requirement; specifically, the liquid level detecting device 15 has a tubular structure, and the liquid level detecting device 15 is communicated with one end of the main body 1 near the heating device 13 and with the blocking device 103 on the main body 1.

As shown in fig. 4, the water storage system 2 includes a water replenishing valve 20, a water replenishing pump 21 and a water storage tank 22, the water replenishing valve 20 is communicated with one end of the water replenishing pump 21, the other end of the water replenishing pump 21 is communicated with the water storage tank 22, the water replenishing valve 20 is also communicated with a water diversion channel 105 of the humidifying device, the water replenishing valve 20 is used for controlling the water outlet amount of the water storage system 2 so as to control the water level in the main body 1, the water replenishing pump 21 is used for pumping out liquid deionized water in the water storage tank 22, the liquid level is guided into the main body 1 of the humidifying device under the action of the water replenishing valve 20, the liquid level detecting device 15 is electrically communicated with the water replenishing pump 21, and the liquid level detecting device 15 can feed back deionized water level information inside the main body 1 to the water replenishing pump 21 and control the water replenishing pump 21 to replenish water to the main body 1. In order to better detect the effect of the hydrogen and nitrogen discharged by the humidifying device, so as to determine whether the humidified hydrogen and nitrogen meets the requirement of the subsequent application, preferably, the second opening 102 of the main body 1 is communicated with the induction system 3 through the exhaust pipeline 107, the induction system 3 comprises a safety valve 30, a temperature sensor 31, a humidity sensor 32 and a pressure sensor 33, the safety valve 30 is correspondingly communicated with the temperature sensor 31, the humidity sensor 32 and the pressure sensor 33 in series, the safety valve 30 is used for controlling the discharge amount of the humidified hydrogen and nitrogen, so that the production flexibility of the humidifying device is improved, and the temperature sensor 31, the humidity sensor 32 and the pressure sensor 33 are respectively used for detecting the temperature, the humidity and the pressure of the humidified hydrogen and nitrogen, so that the temperature, the pressure and the discharge amount of the hydrogen and nitrogen in the humidifying device can be adjusted in real time according to the detected result, so that the discharged hydrogen and nitrogen can meet the requirement of the subsequent application, the humidifying device is improved in humidifying efficiency, automatic production efficiency and degree of the humidifying device.

The utility model also discloses a fuel cell system comprising the humidifying device, and the fuel cell system further comprises:

gas supply system 4: the gas supply system 4 is used for supplying hydrogen and nitrogen to the humidifying device;

pile system 5: the pile system 5 is used for converting chemical energy of humidified hydrogen and nitrogen discharged from the humidifying device into electric energy;

separation device 6: the separation device 6 is simultaneously communicated with the gas inlet and the gas outlet of the pile system 5, and the separation device 6 is used for separating gas and liquid in the mixed gas and guiding the separated gas into the pile system 5;

wherein the gas supply system 4 comprises an ammonia storage device 40, an ammonia adjusting device 41, an ammonia decomposing device 42 and an ammonia adsorbing device 43, and the ammonia storage device 40, the ammonia adjusting device 41 and the ammonia decomposing device 42 are sequentially connected in series and communicated with the ammonia adsorbing device 43; after the ammonia gas is introduced into the ammonia decomposition device 42 through the ammonia gas adjusting device 41 by the ammonia gas storage device 40, the ammonia decomposition device 42 decomposes the ammonia gas into a mixed gas containing hydrogen and nitrogen, an air outlet end of the ammonia gas adsorbing device 43 is communicated with the air inlet channel 11 of the humidifying device, and the ammonia gas adsorbing device 43 discharges the hydrogen and nitrogen mixed gas after being adsorbed into the humidifying device for further humidification; the drain pipe 107 of the humidifying device is communicated with the gas inlet of the pile system 5; the galvanic pile system 5 comprises a galvanic pile 51 and a fan 52, the galvanic pile 51 and the fan 52 are communicated, and the fan 52 is used for blowing air into the galvanic pile 51 to promote the electrochemical reaction of the galvanic pile 51.

The separation device 6 comprises a gas-water separator 61 and a pulse discharge valve 62, wherein a gas outlet of the gas-water separator 61 and a water discharge pipeline 107 of the humidifying device are communicated with a gas inlet of the electric pile system 51 together, and the gas-water separator 61 can separate the gas and water discharged from the electric pile 51; specifically, the gas-water separator 61 separates the hydrogen and nitrogen gas discharged from the electric pile 51 from water, and reintroduces the hydrogen and nitrogen gas into the gas inlet of the electric pile system 5 through a circulation pump, and discharges the separated water from the electric pile 51 and the electric pile system 5 through the pulse discharge valve 62 correspondingly connected, thereby realizing the recycling of the gas.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other forms of variation or modification will occur to those skilled in the art based on the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While obvious variations or modifications are contemplated as falling within the scope of the present utility model.

Claims (10)

1. The utility model provides a humidifying device, includes main part, inlet channel, baffle and heating device, its characterized in that: the top end of the main body is provided with a first opening, a second opening and a blocking device, the blocking device is positioned in the main body, a through hole is formed in the blocking device, and the second opening is communicated with the through hole; the main body is also provided with a water diversion channel for introducing liquid water into the main body; the air inlet channel passes through the first opening and extends into the main body, the air outlet end of the air inlet channel is provided with a gas distribution device, and the gas distribution device is provided with a plurality of openings; when the main body is filled with liquid water, the gas distribution device on the gas inlet channel is immersed in the liquid water in the main body; the baffle is movably connected with the air inlet channel and is positioned between the second opening and the through hole of the blocking device; the heating device is fixedly connected with the main body and is communicated with the inside of the main body.

2. A humidifying device according to claim 1, wherein: the cross-sectional shape of the blocking device corresponds to the cross-sectional shape of the main body, and the blocking device and the top end of the main body form a closed structure.

3. A humidifying device according to claim 2, wherein: the through hole is formed in the center of the bottom surface of the blocking device, and the bottom surface of the blocking device is inclined.

4. A humidifying device according to claim 1, wherein: the air inlet channel extends into the main body after passing through the through hole on the blocking device.

5. A humidifying device according to claim 2, wherein: the baffle is provided with a second through hole, the baffle is movably sleeved on the air inlet channel through the second through hole, and the baffle is positioned in a closed structure formed by the blocking device and the top end of the main body.

6. A humidifying device according to claim 1, wherein: the baffle is in an inclined shape.

7. A humidifying apparatus according to claim 6, wherein: the inclination angle of the baffle plate is 30-40 degrees.

8. A humidifying device according to claim 1, wherein: the main body is provided with a liquid level detection device which is also communicated with the water storage system.

9. A humidifying device according to claim 1, wherein: the main body is communicated with the induction system through the second opening, the induction system comprises a safety valve, a temperature sensor, a humidity sensor and a pressure sensor, and the safety valve is sequentially communicated with the temperature sensor, the humidity sensor and the pressure sensor.

10. A fuel cell system comprising a humidifying device according to any one of claims 1 to 9, characterized in that: and also comprises

A gas supply system; the gas supply system is used for supplying hydrogen and nitrogen gas to the humidifying device,

pile system: the stack system is used for converting chemical energy of the gas discharged from the humidifying device into electric energy,

separation device: the separation device is communicated with the gas inlet of the electric pile system and the gas outlet of the electric pile system at the same time, and can separate the gas discharged from the electric pile system from the liquid and reintroduce the separated gas into the electric pile system.