CN215418252U

CN215418252U - Fuel cell humidification system

Info

Publication number: CN215418252U
Application number: CN202121821517.9U
Authority: CN
Inventors: 胥巍巍; 徐云飞; 邓景聪; 曲观书; 李飞强
Original assignee: Beijing Sinohytec Co Ltd
Current assignee: Beijing Sinohytec Co Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-01-04
Anticipated expiration: 2031-08-05

Abstract

The utility model provides a fuel cell humidification system, which comprises an electric pile and an air-air intercooler, wherein the electric pile is connected with a circulating hydrogen inlet assembly through a pipeline; two sides of the air-air intercooler are detachably connected with flowing air transmission assemblies, and the middle of each flowing air transmission assembly is detachably connected with the electric pile; the air-air intercooler with be equipped with the circulating water subassembly between the pile, just circulating water subassembly one end can be dismantled and be connected the hydrogen subassembly is advanced in the circulation. The utility model achieves more compact structure by connecting the circulating water assembly with the air-air intercooler, and realizes more energy saving of recycling water and hydrogen.

Description

Fuel cell humidification system

Technical Field

The utility model relates to the technical field of fuel cell humidification, and mainly relates to a fuel cell humidification system.

Background

The fuel cell is a chemical device which directly converts chemical energy of fuel into electric energy, also called electrochemical generator, and is a fourth power generation technology following hydraulic power generation, thermal power generation and atomic power generation, because the fuel cell converts Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by Carnot cycle effect, the efficiency is high; in addition, fuel cells use fuel and oxygen as raw materials; meanwhile, no mechanical transmission part is arranged, so that no noise pollution is caused, and the discharged harmful gas is very little, so that the fuel cell is the most promising power generation technology from the viewpoints of energy conservation and ecological environment protection.

The proton exchange membrane of the fuel cell can obtain good working performance under proper humid conditions, and the air and hydrogen inlet air of the fuel cell need to be humidified to prevent the dehydration of the proton exchange membrane in the operation process from reducing the performance and prolonging the service life.

However, because the existing fuel cell system is usually matched with humidifiers to solve the humidification problem, the humidifiers which are used more at present are permeable membrane humidifiers and hollow fiber tube humidifiers, and the humidification quantity of the wet membrane humidifier is generally changed by adjusting the gas flow, the size and thickness of a wet membrane and the water temperature, so that the volume and the weight of the humidifier are large, the volume power density and the mass power density of the system are reduced, and meanwhile, if the humidification effect is to be stably controlled, a bypass path needs to be added or the temperature before and after the humidifier needs to be adjusted, so that the technical problems of complexity and control difficulty of the system are increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fuel cell humidifying system which is used for solving the technical problems that the existing humidifier provided in the background technology has larger volume and weight, the volume power density and the mass power density of the system are reduced, and meanwhile, if the humidifying effect is to be stably controlled, a bypass path is required to be added or the temperature before and after the humidifier is required to be adjusted, so that the complexity and the control difficulty of the system are increased.

In order to achieve the purpose, the utility model provides the following technical scheme:

a fuel cell humidification system comprises an electric pile and an air-air intercooler, wherein the electric pile is connected with a circulating hydrogen inlet assembly through a pipeline;

two sides of the air-air intercooler are detachably connected with flowing air transmission assemblies, and the middle of each flowing air transmission assembly is detachably connected with the electric pile;

the air-air intercooler with be equipped with the circulating water subassembly between the pile, just circulating water subassembly one end can be dismantled and be connected the hydrogen subassembly is advanced in the circulation.

Further, the hydrogen subassembly is advanced in the circulation includes first intake pipe, first intake pipe can be dismantled the connection the pile, first connecting pipe can be dismantled to pile one side and connect, the water knockout drum can be dismantled to first connecting pipe, water knockout drum one end can be dismantled and connect the second connecting pipe, the third connecting pipe can be dismantled and connect the third connecting pipe to the second connecting pipe, the connection hydrogen circulating pump can be dismantled to the third connecting pipe, the connection fourth connecting pipe can be dismantled to hydrogen circulating pump one side, the connection can be dismantled to the fourth connecting pipe first intake pipe.

1. Further, formula that flows air transmission subassembly includes the air intake pipe, air intake pipe one end can be dismantled and connect the air compressor machine, air compressor machine one side can be dismantled and connect the second intake pipe, the connection can be dismantled in the second intake pipe the air-air intercooler, air-air intercooler one side is equipped with the third intake pipe, the connection can be dismantled to third intake pipe one end the pile, just the first blast pipe can be dismantled to the pile, the expander can be dismantled to the first blast pipe other end and connect, the expander can be dismantled and connect the second blast pipe, the air compressor machine with be provided with the motor between the expander.

Furthermore, the circulating water group comprises a water storage cavity, fifth connecting pipes can be detachably connected to two sides of the water storage cavity, a drain valve is arranged on the fifth connecting pipe on one side, and one end of the fifth connecting pipe is detachably connected with the water separator;

the opposite side the connection sixth connecting pipe can be dismantled to the fifth connecting pipe, connection water pump can be dismantled to sixth connecting pipe one end, water pump pipe connection spray thrower, the spray thrower is located in the air-air intercooler, be equipped with the duckbilled check valve on the sixth connecting pipe other end, connection can be dismantled to third connecting pipe one end the sixth connecting pipe, and be close to sixth connecting pipe one side be equipped with discharge valve on the third connecting pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. the in-pile waste water is utilized, no liquid is discharged in the running process of the whole vehicle, and compared with the water spraying of the whole vehicle or the tail row in the running process, the in-pile waste water spraying device has good customer experience;

2. the spraying water is discharged from the reactor, and the temperature requirement of the reactor air is not easily influenced when humidification is carried out.

3. The tail discharge water collection cavity can ensure normal drainage of the galvanic pile, the humidifying capacity is controllable, and meanwhile, the duckbill check valve is added, so that the tail discharge fluid can be prevented from flowing backwards to the air circuit.

4. The spraying device is centralized in the air-air intercooler, the structure reliability is high, the structure is compact, the occupied space is small, and the system integration is good.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged schematic view of the present invention.

In the figure: 1. a galvanic pile; 2. an air-air intercooler; 3. circulating the hydrogen inlet assembly; 31. a first intake pipe; 32. a first connecting pipe; 33. a water separator; 34. a second connecting pipe; 35. a third connecting pipe; 36. a hydrogen circulation pump; 37. a fourth connecting pipe; 4. a flow-type air transmission assembly; 41. an air inlet pipe; 42. the air compressor and the expansion machine are combined; 43. a second intake pipe; 44. a third intake pipe; 45. a first exhaust pipe; 46. a second exhaust pipe; 47. a motor; 5. a circulating water assembly; 51. a water storage cavity; 52. a fifth connecting pipe; 53. a drain valve; 54. a sixth connecting pipe; 55. a water pump; 56. a sprayer; 57. a duckbill check valve; 58. and (4) exhausting the valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In an embodiment, referring to fig. 1-2, a fuel cell humidification system includes a stack 1 and an air-air intercooler 2, wherein the stack 1 is connected to a circulating hydrogen inlet assembly 3 through a pipeline;

two sides of the air-air intercooler 2 are detachably connected with flowing air transmission assemblies 4, and the middle parts of the flowing air transmission assemblies 4 are detachably connected with the electric pile 1;

air-air intercooler 2 with be equipped with circulating water subassembly 5 between the galvanic pile 1, just the connection can be dismantled to 5 one end of circulating water subassembly the circulation advances hydrogen subassembly 3.

Referring to fig. 1, the hydrogen circulation component 3 includes a first air inlet pipe 31, the first air inlet pipe 31 is detachably connected to the electric pile 1, one side of the electric pile 1 is detachably connected to a first connection pipe 32, the first connection pipe 32 is detachably connected to a water separator 33, one end of the water separator 33 is detachably connected to a second connection pipe 34, the second connection pipe 34 is detachably connected to a third connection pipe 35, the third connection pipe 35 is detachably connected to a hydrogen circulation pump 36, one side of the hydrogen circulation pump 36 is detachably connected to a fourth connection pipe 37, and the fourth connection pipe 37 is detachably connected to the first air inlet pipe 31.

Referring to fig. 1, the flow type air transmission assembly 4 includes an air inlet pipe 41, one end of the air inlet pipe 41 is detachably connected to an air compressor and expander assembly 42, one side of the air compressor and expander assembly 42 is detachably connected to a second air inlet pipe 43, the second air inlet pipe 43 is detachably connected to the air-air intercooler 2, one side of the air-air intercooler 2 is provided with a third air inlet pipe 44, one end of the third air inlet pipe 44 is detachably connected to the electric pile 1, the electric pile 1 is detachably connected to a first air outlet pipe 45, the other end of the first air outlet pipe 45 is detachably connected to the air compressor and expander assembly 42, the air compressor and expander assembly 42 is detachably connected to a second air outlet pipe 46, and a motor 47 is disposed between the two air compressors and expander assemblies 42. Air after processing through air compressor machine and expander composite set gets into to the air-air intercooler in carry out corresponding humidification processing, and in the completion back is discharged to the pile, discharges through the second blast pipe after gaseous reaching the certain degree.

Referring to fig. 2, the circulating water assembly 5 includes a water storage cavity 51, both sides of the water storage cavity 51 are detachably connected to a fifth connection pipe 52, a drain valve 53 is disposed on the fifth connection pipe 52 on one side, and one end of the fifth connection pipe 52 is detachably connected to the water separator 33;

the opposite side fifth connecting pipe 52 can be dismantled and connect sixth connecting pipe 54, sixth connecting pipe 54 one end can be dismantled and connect water pump 55, water pump 55 pipe connection spray thrower 56, spray thrower 56 is located in the air-air intercooler 2, be equipped with duckbill check valve 57 on the sixth connecting pipe 54 other end, third connecting pipe 35 one end can be dismantled and be connected sixth connecting pipe 54, and be close to sixth connecting pipe 54 one side be equipped with discharge valve 58 on the third connecting pipe 35.

The operation principle is as follows: firstly, hydrogen enters from a first air inlet pipe, the other end of the hydrogen is detachably connected with the electric pile, then, waste water discharged by the electric pile is separated into gas and water from a water separator, the gas is pumped by a hydrogen circulating pump and discharged into the first air inlet pipe to realize the circulation of the hydrogen, and when the gas needs to be discharged, the gas is correspondingly discharged from a third connecting pipe to a sixth connecting pipe by opening an exhaust valve;

then after water is separated by the water separator, the water is discharged into the water storage cavity through the water discharge valve, when the water needs to be used, the water in the water storage cavity is pumped into the spray pipe through the water pump to carry out corresponding spraying, so that gas spraying is realized, and when the humidity needs to be increased, the horsepower of the water pump is increased;

the relative molecular mass of the air is large and is positioned below, and the relative molecular mass of the hydrogen is small and is positioned above, so that the air is discharged from the second exhaust pipe when reaching a certain proportion.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. A fuel cell humidification system comprises a galvanic pile (1) and an air-air intercooler (2), and is characterized in that: the electric pile (1) is connected with a circulating hydrogen inlet assembly (3) through a pipeline;

two sides of the air-air intercooler (2) are detachably connected with flowing air transmission assemblies (4), and the middle parts of the flowing air transmission assemblies (4) are detachably connected with the electric pile (1);

air-air intercooler (2) with be equipped with circulating water subassembly (5) between galvanic pile (1), just circulating water subassembly (5) one end can be dismantled and connect hydrogen subassembly (3) are advanced in the circulation.

2. A fuel cell humidification system as claimed in claim 1 wherein: the hydrogen subassembly (3) is advanced in the circulation includes first intake pipe (31), first intake pipe (31) can be dismantled and connect pile (1), pile (1) one side can be dismantled and connect first connecting pipe (32), water knockout drum (33) can be dismantled in first connecting pipe (32), water knockout drum (33) one end can be dismantled and connect second connecting pipe (34), second connecting pipe (34) can be dismantled and connect third connecting pipe (35), third connecting pipe (35) can be dismantled and connect hydrogen circulating pump (36), hydrogen circulating pump (36) one side can be dismantled and connect fourth connecting pipe (37), fourth connecting pipe (37) can be dismantled and connect first intake pipe (31).

3. A fuel cell humidification system as claimed in claim 1 wherein: formula that flows air drive assembly (4) includes air intake pipe (41), air intake pipe (41) one end can be dismantled and connect air compressor machine and expander composite assembly (42), air compressor machine and expander composite assembly (42) one side can be dismantled and connect second intake pipe (43), second intake pipe (43) can be dismantled and connect air-air intercooler (2), air-air intercooler (2) one side is equipped with third intake pipe (44), third intake pipe (44) one end can be dismantled and connect pile (1), just pile (1) can be dismantled and connect first blast pipe (45), first blast pipe (45) other end can be dismantled and connect air compressor machine and expander composite assembly (42), air compressor machine and expander composite assembly (42) can be dismantled and connect second blast pipe (46).

4. A fuel cell humidification system as claimed in claim 3 wherein: and a motor (47) is arranged between the two air compressor and expansion machine combined components (42).

5. A fuel cell humidification system as claimed in claim 2 wherein: the circulating water assembly (5) comprises a water storage cavity (51), wherein fifth connecting pipes (52) can be detachably connected to two sides of the water storage cavity (51), a drain valve (53) is arranged on the fifth connecting pipe (52) on one side, and one end of each fifth connecting pipe (52) is detachably connected with the water separator (33);

the opposite side fifth connecting pipe (52) can be dismantled and connect sixth connecting pipe (54), sixth connecting pipe (54) one end can be dismantled and connect water pump (55), water pump (55) pipe connection spray thrower (56), spray thrower (56) are located in air-air intercooler (2), be equipped with duckbilled check valve (57) on the sixth connecting pipe (54) other end, third connecting pipe (35) one end can be dismantled and connect sixth connecting pipe (54), and be close to sixth connecting pipe (54) one side be equipped with discharge valve (58) on third connecting pipe (35).