CN216213578U - Fuel cell and air supply system thereof - Google Patents
Fuel cell and air supply system thereof Download PDFInfo
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- CN216213578U CN216213578U CN202121340267.7U CN202121340267U CN216213578U CN 216213578 U CN216213578 U CN 216213578U CN 202121340267 U CN202121340267 U CN 202121340267U CN 216213578 U CN216213578 U CN 216213578U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The application discloses a fuel cell and air supply system thereof, which is used for supplying air to a fuel cell stack, and comprises: an air intake line; an air compressor disposed in the intake line for providing pressure to air in the intake line; the cooling cavity surrounds the outer side of the air compressor, and the motor of the air compressor and the air flowing through the air outlet of the air compressor can be cooled through the diversion cooling liquid. According to the air supply system, an intercooler is not required to be arranged in the air inlet pipeline, so that the pipeline connection between the air compressor and the intercooler is reduced, the pipeline arrangement of the fuel cell is simplified, and the integration level of the fuel cell is improved; and the cooling cavity that surrounds in the air compressor machine outside compares with the intercooler of independent setting, and the inside runner is simpler than the intercooler, because no longer set up the intercooler so stopped the interior hourglass problem that the intercooler exists for the operating pressure of air compressor machine no longer reduces, has reduced the consumption of air compressor machine, is favorable to promoting fuel cell's power output and working property.
Description
Technical Field
The utility model relates to the technical field of fuel cells, in particular to an air supply system, and further relates to a fuel cell with the air supply system.
Background
A fuel cell is an integration of a fuel cell stack and auxiliary systems. The fuel cell stack is a core part of the fuel cell, and the auxiliary system is a part for maintaining the continuous and stable operation of the fuel cell stack and comprises an on-vehicle hydrogen supply system, an air supply system, a thermal management system, a water treatment system, a ventilation system, an automatic control system and the like.
The air supply system is a system for filtering, humidifying, pressure regulating and the like the air entering the fuel cell stack. The existing air supply system has low integration level and large occupied space, is not beneficial to the integration development of the fuel cell and also influences the performance optimization of the fuel cell.
SUMMERY OF THE UTILITY MODEL
Accordingly, the present invention provides an air supply system which can improve the integration degree of a fuel cell and optimize the performance of the fuel cell. The utility model also provides a fuel cell with the air supply system.
In order to achieve the purpose, the utility model provides the following technical scheme:
an air supply system for supplying air to a fuel cell stack, comprising:
an air intake line;
an air compressor disposed in the air intake conduit, the air compressor being configured to provide pressure to air in the air intake conduit;
the cooling cavity surrounds the air compressor machine outside, the cooling cavity can be right through the water conservancy diversion coolant liquid the motor of air compressor machine and flow through the air compressor machine gas outlet the air cools off.
Preferably, in the air supply system, the cooling liquid circulates in a cooling circuit, a radiator, a controller and the cooling cavity are arranged in the cooling circuit, and the air compressor operates under the control of the controller.
Preferably, in the air supply system, the air supply system includes an outlet pipe capable of leading out the gas in the fuel cell stack; the part that is close to of air inlet pipeline fuel cell pile is provided with first valve, what go out the pipeline is close to fuel cell pile's part is provided with the second valve, and through first valve realizes air inlet pipeline with the wall of fuel cell pile's air inlet and through the second valve realizes go out the pipeline with the wall of fuel cell pile's gas outlet, in order to avoid fuel cell pile appears the hydrogen empty interface.
Preferably, in the air supply system, a bypass line capable of communicating with the atmosphere is provided in the air intake line, and a third valve is provided in the bypass line.
Preferably, in the air supply system, an air filter is disposed at an end of the air intake pipe away from the fuel cell stack, and a first sensor is disposed at a position of the air intake pipe between the air filter and the air compressor.
Preferably, in the air supply system, the first sensor is a mass flow meter that monitors the air in the intake pipe.
Preferably, in the air supply system, a second sensor is provided between the first valve and the fuel cell stack, and a third sensor is provided between the second valve and the fuel cell stack.
Preferably, in the air supply system, the second sensor and the third sensor are both temperature and pressure integrated sensors capable of monitoring the temperature and pressure of the gas.
Preferably, in the air supply system, the first valve, the second valve, and the third valve are each an electric ball valve or an electric butterfly valve whose opening degree is changed and opened and closed by electric control.
A fuel cell comprising a fuel cell stack and an air supply system for supplying air to the fuel cell stack, the air supply system being any one of the air supply systems described above.
According to the air supply system provided by the utility model, the cooling cavity surrounding the air compressor is arranged on the outer side of the air compressor, the cooling cavity can cool the motor of the air compressor and the air flowing through the air outlet of the air compressor (the air is the air supplied to the fuel cell stack by the air inlet pipeline) by guiding the cooling liquid, so that an intercooler for cooling the air is not required to be arranged in the air inlet pipeline, namely, the intercooler is not arranged in the air inlet pipeline, thus the pipeline connection between the air compressor and the intercooler is reduced, the pipeline arrangement of the fuel cell is simplified, and the integration level of the fuel cell is improved; and, surround the cooling cavity in the air compressor machine outside and compare with the intercooler of independent setting, its inside fluid only has the coolant liquid, there is not the air, therefore the inside runner design of cooling cavity is simpler than the intercooler, and, because no longer set up the intercooler so stopped the interior hourglass problem that the intercooler exists, the pressure drop of the air supply system that has avoided the intercooler to lead to, make the operating pressure of air compressor machine no longer reduce, and then reduced the consumption of air compressor machine, be favorable to promoting fuel cell's power output and working property.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air supply system according to an embodiment of the present invention.
In fig. 1:
1-an air inlet pipeline, 2-an air compressor, 3-a cooling cavity, 4-a cooling loop, 5-a radiator, 6-a controller, 7-an air outlet pipeline, 8-a first valve, 9-a second valve, 10-a bypass pipeline, 11-a third valve, 12-an air filter, 13-a first sensor, 14-a second sensor, 15-a third sensor, 16-a fuel cell stack and 17-a humidifier.
Detailed Description
The present invention provides an air supply system which can improve the degree of integration of a fuel cell and can optimize the performance of the fuel cell.
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.
As shown in fig. 1, an embodiment of the present invention provides an air supply system for supplying air to a fuel cell stack 16, the air supply system mainly including an intake pipe 1, an after-mentioned outlet pipe 7, and a plurality of devices or components disposed on the intake pipe 1 and the outlet pipe 7, wherein an air compressor 2 is disposed in the intake pipe 1, and the air compressor 2 is configured to compress air entering the intake pipe 1 to increase the pressure of the air in the intake pipe 1, that is, to provide pressure to the air to promote the flow of the air in the intake pipe 1; moreover, the air compressor 2 is different from the existing air compressor in that a cooling cavity 3 is surrounded and surrounded on the outer side of the air compressor 2, the cooling cavity 3 can cool the motor of the air compressor 2 and the air flowing through the air outlet of the air compressor 2 by guiding cooling liquid, namely, the cooling cavity 3 can cool the air entering the fuel cell stack 16 while cooling the air compressor 2, meanwhile, the whole equipment formed by the air compressor 2 and the cooling cavity 3 can not only realize the compression of the air but also realize the cooling of the air, so that the air not only has enough power to enter the fuel cell stack 16 but also has the temperature suitable for the work of the fuel cell stack 16, thereby realizing the integration of the existing air compressor and the existing intercooler, thus, an intercooler which is used for cooling the air independently is not needed to be arranged in the air inlet pipeline 1, and the intercooler is not needed to be arranged in the air inlet pipeline 1, therefore, the pipeline connection between the air compressor and the intercooler is reduced, the arrangement of pipelines such as a water channel, an air channel and the like of the fuel cell is effectively simplified, and the integration level of an air supply system and the fuel cell is improved; and, the cooling cavity 3 that covers at the casing surface of air compressor machine 2 compares with the intercooler of independent setting, its inside fluid only has the coolant, there is not the air, therefore the inside runner design of cooling cavity 3 is simpler than the intercooler, and, because no longer set up the intercooler so stopped the interior hourglass problem that the intercooler exists (leak in the intercooler and refer to the air cavity of intercooler to the coolant part reveal or coolant to air cavity seepage), the pressure drop of the air supply system that the intercooler leads to has been avoided, make the operating pressure of air compressor machine 2 no longer reduce, and then reduced the consumption of air compressor machine 2, be favorable to promoting fuel cell's power output and working property.
As shown in fig. 1, in order to ensure that the cooling cavity 3 cools the motor and the air normally, the cooling liquid is circulated in the cooling circuit 4, the radiator 5, the controller 6 and the cooling cavity 3 are arranged in the cooling circuit 4, and the air compressor 2 is operated under the control of the controller 6. Wherein, cooling chamber 3, controller 6 and radiator 5 three have constituted a cooling circuit 4, cooling chamber 3 is the heat-absorbing part who absorbs motor heat and air heat, radiator 5 is the part of realizing the heat transfer of coolant liquid and external environment, in specific cooling process, the coolant liquid can absorb the heat of motor and air in cooling chamber 3, later the coolant liquid can carry the heat to enter into the heat exchanger and carry out the heat transfer with external environment, thereby make the temperature of coolant liquid descend, later the coolant liquid that the temperature descends enters into cooling chamber 3 again and absorbs the heat, accomplish a cooling cycle so far. In the specific arrangement, as shown in fig. 1, the controller 6 is configured to allow the cooling liquid absorbing heat to flow through the controller 6 first, and then allow the cooling liquid to flow through the controller 6 again after releasing heat, that is, the cooling liquid flows through the controller 6 twice in one cooling cycle, so as to more fully cool the controller 6.
As shown in fig. 1, the air supply system includes an air outlet line 7 capable of leading out the gas in the fuel cell stack 16; a first valve 8 is arranged at the part of the air inlet pipeline 1 close to the fuel cell stack 16, a second valve 9 is arranged at the part of the air outlet pipeline 7 close to the fuel cell stack 16, and the air inlet pipeline 1 is separated from the air inlet of the fuel cell stack 16 through the first valve 8, and the air outlet pipeline 7 is separated from the air outlet of the fuel cell stack 16 through the second valve 9, so that a hydrogen-air interface of the fuel cell stack 16 is avoided. In the structure, when the fuel cell normally works, the first valve 8 and the second valve 9 are both kept in an open state to ensure normal air inlet and air outlet of the fuel cell stack 16, meanwhile, the second valve 9 can also play a back pressure role, namely, the second valve 9 can also be understood as a back pressure valve, after the fuel cell stops and is swept, the first valve 8 and the second valve 9 are closed to realize the separation of the air inlet pipeline 1 and the fuel cell stack 16 through the first valve 8, and the separation of the air outlet pipeline 7 and the fuel cell stack 16 through the second valve 9, so that the residual air in the fuel cell stack 16 can be ensured to be consumed, and the hydrogen-air interface is prevented from appearing in the next starting process of the fuel cell. That is to say, the embodiment provides a shutdown protection strategy for a fuel cell, that is, the first valve 8 and the second valve 9 are closed after the fuel cell is shutdown, so as to avoid a hydrogen-air interface occurring in the next starting process, reduce the influence of the start-stop working condition on the service life of the fuel cell, and prolong the service life of the fuel cell.
Further, as shown in fig. 1, it is preferable that a bypass line 10 capable of communicating with the atmosphere is provided in the intake line 1, and a third valve 11 is provided in the bypass line 10. Through setting up this bypass pipeline 10, make this embodiment provide a strategy that prevents 2 surging of air compressor machine, specifically be at fuel cell start-up in-process, make third valve 11 open, bypass pipeline 10 plays the bypass effect to avoid air compressor machine 2 to take place surging, reduced and stopped the influence of operating mode to fuel cell life, to promoting 2 life of air compressor machine, fuel cell life has the great meaning.
Specifically, as shown in fig. 1, the air supply system includes a humidifier 17, and the humidifier 17 is disposed in both the air inlet pipeline 1 and the air outlet pipeline 7, so that the humidifier 17 humidifies the dry air at the inlet by using the wet air at the outlet of the fuel cell stack 16 through a water content exchange technology, and the humidity of the air entering the fuel cell stack 16 is ensured to meet the requirement. On this basis, the bypass line 10 is preferably arranged between the air compressor 2 and the humidifier 17.
As shown in fig. 1, in order to improve the operation performance of the air supply system, an air filter 12 is provided at an end of the air intake pipe 1 remote from the fuel cell stack 16, and a first sensor 13 is provided at a portion of the air intake pipe 1 between the air filter 12 and the air compressor 2. The air filter 12 is arranged to filter particulate impurities and harmful gases in the atmosphere, so as to avoid damage to the air intake pipeline 1 and the equipment and components arranged in the air intake pipeline 1, and to provide clean air for the fuel cell stack 16. The first sensor 13 is preferably a mass flow meter capable of monitoring the air in the inlet line 1 to achieve accurate control of the air supplied to ensure more efficient operation of the fuel cell stack 16.
Further, as shown in fig. 1, a second sensor 14 is provided between the first valve 8 and the fuel cell stack 16, and a third sensor 15 is provided between the second valve 9 and the fuel cell stack 16, and it is also preferable that the second sensor 14 and the third sensor 15 are both temperature and pressure integrated sensors capable of monitoring the temperature and pressure of the gas. The second sensor 14 is a temperature and pressure integrated sensor capable of monitoring the temperature and pressure of the supplied air, and the third sensor 15 is a temperature and pressure integrated sensor capable of monitoring the temperature and pressure of the gas discharged from the fuel cell stack 16, so that the temperature and pressure of the air at the inlet and outlet of the fuel cell stack 16 can be accurately detected and controlled, and the fuel cell stack 16 can operate more efficiently.
Preferably, the first valve 8, the second valve 9 and the third valve 11 are all electric ball valves or electric butterfly valves, which are electrically controlled to change and open and close the opening. This type of valve is not only easy to control, but also has high control accuracy, and is suitable for use in a fuel cell, so it is a preferred type of this embodiment.
In addition, the present embodiment also provides a fuel cell, which includes a fuel cell stack 16 and an air supply system for supplying air to the fuel cell stack 16, where the air supply system is the above-mentioned air supply system.
Since the fuel cell uses the air supply system, the beneficial effects of the fuel cell caused by the air supply system are referred to above and will not be described herein again.
The structure of each part is described in a progressive manner in the specification, the structure of each part is mainly described to be different from the existing structure, and the whole and part structures of the air supply system can be obtained by combining the structures of the parts.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An air supply system for supplying air to a fuel cell stack, comprising:
an air intake line;
an air compressor disposed in the air intake conduit, the air compressor being configured to provide pressure to air in the air intake conduit;
the cooling cavity surrounds the air compressor machine outside, the cooling cavity can be right through the water conservancy diversion coolant liquid the motor of air compressor machine and flow through the air compressor machine gas outlet the air cools off.
2. The air supply system according to claim 1, wherein the cooling liquid circulates in a cooling circuit in which a radiator, a controller, and the cooling cavity are disposed, and the air compressor operates under the control of the controller.
3. The air supply system according to claim 1, comprising an outlet line configured to conduct out gas in the fuel cell stack; the part that is close to of air inlet pipeline fuel cell pile is provided with first valve, what go out the pipeline is close to fuel cell pile's part is provided with the second valve, and through first valve realizes air inlet pipeline with the wall of fuel cell pile's air inlet and through the second valve realizes go out the pipeline with the wall of fuel cell pile's gas outlet, in order to avoid fuel cell pile appears the hydrogen empty interface.
4. The air supply system according to claim 1, wherein a bypass line capable of communicating with the atmosphere is provided on the intake line, and a third valve is provided in the bypass line.
5. The air supply system according to claim 1, wherein an end of the intake pipe remote from the fuel cell stack is provided with an air filter, and a portion of the intake pipe between the air filter and the air compressor is provided with a first sensor.
6. The air supply system according to claim 5, wherein the first sensor is a mass flow meter that monitors the air in the air intake conduit.
7. The air supply system of claim 3, wherein a second sensor is disposed between the first valve and the fuel cell stack, and a third sensor is disposed between the second valve and the fuel cell stack.
8. The air supply system according to claim 7, wherein the second sensor and the third sensor are both temperature-pressure integrated sensors capable of monitoring the temperature and pressure of the gas.
9. The air supply system according to claim 3, wherein the first valve, the second valve, and the third valve are each an electric ball valve or an electric butterfly valve whose opening degree is changed and which is opened and closed by electric control.
10. A fuel cell comprising a fuel cell stack and an air supply system for supplying air to the fuel cell stack, characterized in that the air supply system is an air supply system according to any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121340267.7U CN216213578U (en) | 2021-06-16 | 2021-06-16 | Fuel cell and air supply system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121340267.7U CN216213578U (en) | 2021-06-16 | 2021-06-16 | Fuel cell and air supply system thereof |
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| CN216213578U true CN216213578U (en) | 2022-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114792824A (en) * | 2022-04-27 | 2022-07-26 | 上海恒劲动力科技有限公司 | Integrated heat management system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114792824A (en) * | 2022-04-27 | 2022-07-26 | 上海恒劲动力科技有限公司 | Integrated heat management system and control method thereof |
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