CN212485379U - Pre-humidifying system of fuel cell engine - Google Patents
Pre-humidifying system of fuel cell engine Download PDFInfo
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- CN212485379U CN212485379U CN202021645010.8U CN202021645010U CN212485379U CN 212485379 U CN212485379 U CN 212485379U CN 202021645010 U CN202021645010 U CN 202021645010U CN 212485379 U CN212485379 U CN 212485379U
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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
Abstract
The utility model discloses a pre-humidifying system of a fuel cell engine, which comprises an air compressor, an external humidifier, a spray mixing tank, a galvanic pile and a water storage tank; the air outlet of the air compressor is sequentially connected with the external humidifier, the spraying mixing tank and the electric pile, the outlet of the electric pile is connected with the water inlet of the water storage tank through the external humidifier, the water outlet of the water storage tank is connected with the inlet of the spraying mixing tank, and the inlet of the spraying mixing tank is provided with an atomizing nozzle. The system can pre-store a small amount of water in the water storage tank and humidify the inlet air directly in a spray humidifying mode through the spray mixing tank at the initial starting stage or the low-load running stage of the fuel cell engine, so that the phenomenon of low voltage caused by over-drying of a proton exchange membrane due to insufficient humidification at the starting stage or the low-load running stage can be effectively avoided, and the service life of a galvanic pile is further prolonged; meanwhile, the water storage tank can collect water in the tail exhaust of the electric pile, no additional water source is needed, and resources can be saved.
Description
Technical Field
The utility model relates to a fuel cell field, concretely relates to fuel cell engine is humidification system in advance.
Background
At present, global energy utilization resources are mainly fossil energy such as coal and petroleum, but the problems of environmental damage and continuous resource exhaustion are not negligible. As early as the 70's last century, the united states department of health has suggested the use of hydrogen energy instead of traditional fossil energy to solve the two global problems associated with the above. Since four or fifty years later, research institutions and universities around the world have invested a great deal of manpower and material resources into the field of hydrogen energy to promote the overall economic formation of hydrogen energy, and hydrogen is an ideal energy carrier and has very excellent properties, such as light weight, high energy conversion efficiency, no pollution and the like. Most importantly, the chemical energy stored in hydrogen can be converted into electric energy by electrochemical method and fuel cell, and its conversion efficiency is much higher than that of internal combustion engine and thermal power generation. Because of this, hydrogen fuel cells are favored by many automobile manufacturers, and it is desired to replace conventional internal combustion engine automobiles with hydrogen fuel cell automobiles. Compared with the traditional internal combustion engine automobile, the hydrogen fuel cell automobile has two main characteristics: firstly, no pollution, secondly, high energy conversion efficiency. A Hydrogen Fuel Cell (Hydrogen Fuel Cell) is an electrochemical device that combines Hydrogen and oxygen to generate electricity, water, and heat. The hydrogen fuel cell will continue to generate electricity as long as the fuel supply is ensured. The whole chemical reaction process is quiet and pollution-free, and the fuel cell and the battery are devices for converting chemical energy into electric energy, and have a plurality of similarities, and the differences are that the fuel cell is an energy conversion device, and the battery is an energy storage device. Compared with the traditional heat engine, the heat engine does not need working medium to circulate between a high-temperature heat source and a low-temperature heat source, and the ideal energy conversion efficiency is not limited by Carnot cycle, so that the energy conversion efficiency is higher. And the energy conversion process has no combustion process, and the pollution in the power generation process of the fuel cell is much less than that of the traditional heat engine.
The water content of the membrane in the proton exchange membrane fuel cell directly influences the conduction of protons in the membrane, thereby influencing the performance of the cell, so that a humidifying or moisture-preserving method must be adopted to ensure the wettability of the membrane. The air humidification mode commonly used by the current fuel cell vehicle is an external humidifier mode, the mode utilizes water produced in the reaction process to humidify air inlet air, and the mode has the defects that in the starting-up stage or the low-load stage, the air flow is large, the generated water is less, and tail exhaust gas is not enough to humidify the inlet air fully, so that a proton exchange membrane is too dry, and the low-voltage phenomenon occurs.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fuel cell engine is humidification system in advance, at the low-load operation stage of initial start phase or the long-term not operation of engine, carries out the humidification to admitting air through the mode of direct spraying humidification, has effectively avoided proton exchange membrane to appear the problem that the drying leads to the battery performance to descend.
In order to achieve the above object, the utility model adopts the following technical scheme:
a fuel cell engine pre-humidification system comprises an air compressor, an external humidifier, a spray mixing tank, an electric pile and a water storage tank;
the air compressor's gas outlet links to each other with external humidifier, spraying blending tank and galvanic pile in proper order, and the export of galvanic pile links to each other through the water inlet of external humidifier with the storage water tank, and the delivery port of storage water tank links to each other with the import of spraying blending tank, and the import department of spraying blending tank is equipped with atomizer.
Preferably, the air purifier further comprises an air filter and an air flow meter, wherein an outlet of the air filter is connected with an air inlet of the air compressor, and the air flow meter is arranged on a connecting pipeline of the air filter and the air compressor.
Preferably, the external humidifier is provided with a first inlet, a second inlet, a first outlet and a second outlet, the first inlet of the external humidifier is connected with an air outlet of the air compressor, the first outlet is connected with an inlet of the spray mixing tank, the second inlet is connected with an outlet of the electric pile, and the second outlet is connected with a water inlet of the water storage tank.
Preferably, the spray mixing tank is provided with a spray tank drain port.
Preferably, the water storage tank is provided with an air outlet.
Preferably, a back pressure valve is arranged at the water inlet of the water storage tank.
Preferably, a water pressurizer is arranged on a connecting pipeline between the water storage tank and the spray mixing tank.
Due to the structure, the beneficial effects of the utility model reside in that:
1. the utility model provides a fuel cell engine prehumidification system, through the setting of storage water tank and spraying blending tank, make can be at the initial start-up stage of fuel cell engine or the low-load operation stage, through prestoring a small amount of water in the storage water tank, and directly humidify admitting air with the mode of spraying humidification through the spraying blending tank, thereby can effectively avoid start-up stage or low-load phase of carrying, the proton exchange membrane that the humidification is not enough to lead to is too dry, low voltage phenomenon appears, and then postpone pile life.
2. The water storage tank can collect the moisture in the tail exhaust of the fuel cell stack, and a water source does not need to be additionally added, so that resources can be saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a fuel cell engine pre-humidification system, which includes an air compressor 3, an external humidifier 4, a spray mixing tank 12, an electric pile 6, and a water storage tank 8;
the gas outlet of the air compressor 3 is sequentially connected with the external humidifier 4, the spraying mixing tank 12 and the electric pile 6, the outlet of the electric pile 6 is connected with the water inlet of the water storage tank 8 through the external humidifier 4, the water outlet of the water storage tank 8 is connected with the inlet of the spraying mixing tank 12, and the inlet of the spraying mixing tank 12 is provided with an atomizing nozzle 11.
In the embodiment, the air purifier further comprises an air filter 1 and an air flow meter 2, wherein an outlet of the air filter 1 is connected with an air inlet of an air compressor 3, and the air flow meter 2 is arranged on a connecting pipeline of the air filter and the air compressor.
In this embodiment, the external humidifier 4 is provided with a first inlet a1, a second inlet a2, a first outlet B1 and a second outlet B2, the first inlet a1 of the external humidifier 4 is connected with the air outlet of the air compressor 3, the first outlet B1 is connected with the inlet of the spray mixing tank 12, the second inlet a2 is connected with the outlet of the electric pile 6, and the second outlet B2 is connected with the water inlet of the water storage tank 8.
In this embodiment, the spray mixing tank 12 is provided with a spray tank drain port 5.
In this embodiment, the water storage tank 8 is provided with an air outlet 9.
In this embodiment, a back pressure valve 7 is arranged at the water inlet of the water storage tank 8.
In the present embodiment, a water pressurizer 10 is disposed on the connecting pipeline between the water storage tank 8 and the spray mixing tank 12.
The working process principle of the structure is as follows:
air enters an air compressor 3 through an air filter 1 and an air flow meter 2, enters an external humidifier 4 after being pressurized by the air compressor 3, then flows through a spray mixing tank 12, and enters a galvanic pile 6 for reaction after being sprayed and humidified; the tail gas after reaction enters an external humidifier 4 to humidify the inlet air, then flows through a back pressure valve 7 for regulating the pressure of an air path, enters a water storage tank 8, part of water is left in the water storage tank 8, part of water is directly discharged along with an exhaust port 9, the water in the water storage tank 8 is pressurized by a water pressurizer 10 and then is sprayed into a spray mixing tank 12 through an atomizing nozzle 11 to humidify the air inlet air. The spray humidification can be turned off by stopping the atomizer 11 after the voltage returns to normal, and the humidification is carried out by the collected moisture generated by the reaction of the electric pile 6 only through the external humidifier 4.
At the initial starting stage or the low-load operation stage of the fuel cell engine, the air flow is large, and the moisture generated by the reaction of the fuel cell stack 6 is small, so that the water in the tail gas of the stack 6 is not enough to quickly wet the proton exchange membrane. To address this problem, the present embodiment adds a spray mixing tank 12 and a water storage tank 8, so that the intake air can be humidified directly in a spray humidification manner by pre-storing a small amount of water in the water storage tank 8 through the spray mixing tank 12. Therefore, the phenomenon that the proton exchange membrane is too dry and has low voltage caused by insufficient humidification at the starting stage or the low-load operation stage can be effectively avoided, and the service life of the electric pile 6 can be prolonged. Meanwhile, the water storage tank 8 can collect water in the tail exhaust of the fuel cell stack 6, an external water source is not required to be additionally added, and resources can be saved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A fuel cell engine pre-humidification system, characterized by: comprises an air compressor, an external humidifier, a spray mixing tank, a galvanic pile and a water storage tank;
the air compressor's gas outlet links to each other with external humidifier, spraying blending tank and galvanic pile in proper order, and the export of galvanic pile links to each other through the water inlet of external humidifier with the storage water tank, and the delivery port of storage water tank links to each other with the import of spraying blending tank, and the import department of spraying blending tank is equipped with atomizer.
2. The fuel cell engine pre-humidification system of claim 1, wherein: the air purifier is characterized by further comprising an air filter and an air flow meter, wherein an outlet of the air filter is connected with an air inlet of the air compressor, and the air flow meter is arranged on a connecting pipeline of the air filter and the air compressor.
3. The fuel cell engine pre-humidification system of claim 1, wherein: the external humidifier is provided with a first inlet, a second inlet, a first outlet and a second outlet, the first inlet of the external humidifier is connected with an air outlet of the air compressor, the first outlet is connected with an inlet of the spray mixing tank, the second inlet is connected with an outlet of the electric pile, and the second outlet is connected with a water inlet of the water storage tank.
4. The fuel cell engine pre-humidification system of claim 1, wherein: and a spraying tank water outlet is formed in the spraying mixing tank.
5. The fuel cell engine pre-humidification system of claim 1, wherein: the water storage tank is provided with an air outlet.
6. The fuel cell engine pre-humidification system of claim 1, wherein: a back pressure valve is arranged at the water inlet of the water storage tank.
7. The fuel cell engine pre-humidification system of claim 1, wherein: and a water pressurizer is arranged on a connecting pipeline of the water storage tank and the spray mixing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021645010.8U CN212485379U (en) | 2020-08-10 | 2020-08-10 | Pre-humidifying system of fuel cell engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021645010.8U CN212485379U (en) | 2020-08-10 | 2020-08-10 | Pre-humidifying system of fuel cell engine |
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| CN212485379U true CN212485379U (en) | 2021-02-05 |
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| CN202021645010.8U Active CN212485379U (en) | 2020-08-10 | 2020-08-10 | Pre-humidifying system of fuel cell engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115939449A (en) * | 2023-01-30 | 2023-04-07 | 广州汽车集团股份有限公司 | Fuel cell system, humidification method and water replenishing method thereof |
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2020
- 2020-08-10 CN CN202021645010.8U patent/CN212485379U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115939449A (en) * | 2023-01-30 | 2023-04-07 | 广州汽车集团股份有限公司 | Fuel cell system, humidification method and water replenishing method thereof |
| CN115939449B (en) * | 2023-01-30 | 2024-03-08 | 广州汽车集团股份有限公司 | Fuel cell system, and humidification method and water supplementing method thereof |
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