Medium discharge device for fuel cell and fuel cell

Abstract

The utility model discloses a medium discharge device for a fuel cell and the fuel cell, and relates to the technical field of medium discharge, the medium discharge device comprises a device main body, a medium discharge flow channel is formed in the device main body, the device main body is provided with a medium outlet and a plurality of medium inlets, the medium discharge flow channel is communicated with the medium outlet and each medium inlet, at least one medium inlet is used for being directly connected with a liquid discharge structure of the fuel cell, at least one medium inlet is used for being directly connected with a nitrogen discharge structure of the fuel cell, and at least one medium inlet is used for being directly connected with a pressure relief structure of the fuel cell. According to the present invention, the liquid discharge structure, the nitrogen discharge structure and the pressure relief structure are communicated with the medium discharge flow channel, such that the liquid discharge structure, the nitrogen discharge structure and the pressure relief structure can be integrated on the medium discharge device so as to reduce the space occupation of the medium discharge device, improve the compactness and the integration level of the fuel cell, and further improve the overall performance of the fuel cell.

Description

Technical Field

[0001] The utility model relates to the technical field of medium discharge, in particular to a medium discharge device for a fuel cell and a fuel cell. Background Art

[0002] In related technologies, the function of the fuel cell hydrogen module-exhaust pipeline is to discharge the gas and water mixture discharged by the pressure relief valve, drain valve, and nitrogen exhaust valve to the tail exhaust interface, and finally discharge it out of the system. However, the exhaust pipelines of the nitrogen exhaust valve, pressure relief valve, drain valve, etc. are independent and numerous. Connecting the pressure relief pipeline, drain pipeline, and nitrogen exhaust pipeline to the tail exhaust interface respectively takes up a large space, which greatly reduces the compactness and integration of the fuel cell. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a medium discharge device for a fuel cell that can reduce the space occupied by the medium discharge device, improve the compactness and integration of the fuel cell, and thus improve the overall performance of the fuel cell.

[0004] The utility model further proposes a fuel cell.

[0005] According to an embodiment of the present invention, a medium discharge device for a fuel cell includes: a device body, a medium discharge flow channel formed in the device body, the device body having a medium outlet and multiple medium inlets, the medium discharge flow channel connecting the medium outlet and each medium inlet, at least one medium inlet is used to be directly connected to the liquid discharge structure of the fuel cell, at least one medium inlet is used to be directly connected to the nitrogen discharge structure of the fuel cell, and at least one medium inlet is used to be directly connected to the pressure relief structure of the fuel cell.

[0006] According to the medium discharge device for a fuel cell according to an embodiment of the present invention, by connecting the liquid discharge structure, nitrogen discharge structure, and pressure relief structure to the medium discharge flow channel, the liquid discharge structure, nitrogen discharge structure, and pressure relief structure can be integrated into the medium discharge device, thereby reducing the space occupied by the medium discharge device, improving the compactness and integration of the fuel cell, and further improving the overall performance of the fuel cell.

[0007] According to some embodiments of the present invention, the device body includes: a main line and multiple branch lines, the multiple branch lines are connected to the main line, the main line forms a medium discharge flow channel, and the multiple branch lines form a medium inlet.

[0008] According to some embodiments of the present invention, a plurality of branch pipelines are connected to corresponding liquid discharge structures, corresponding nitrogen discharge structures, and corresponding pressure relief structures through clamps.

[0009] According to some embodiments of the present invention, the main pipeline is formed with a medium outlet; and / or

[0010] The main pipeline and multiple branch pipelines are formed in one piece.

[0011] According to some embodiments of the present invention, at least one of the inner wall of the medium inlet, the inner wall of the medium outlet, and the inner wall of the medium discharge flow channel is provided with a first protective layer.

[0012] According to some embodiments of the present invention, the medium discharge device further includes: a heating structure, which is provided on the outer surface of the device body.

[0013] According to some embodiments of the present invention, the heating structure is sleeved on the device body.

[0014] According to some embodiments of the present invention, the heating structure includes: a heating element, which is arranged around the outside of the device body.

[0015] According to some embodiments of the present invention, the heating structure further includes: a second protective layer, the second protective layer covering the heating element and abutting against the device body.

[0016] A fuel cell according to an embodiment of the present invention includes the medium discharge device of the above embodiment.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of a medium discharge device according to an embodiment of the utility model;

[0020] Figure 2 It is a partial cross-sectional view of the medium discharge device of the embodiment of the present utility model.

[0021] Reference numerals:

[0022] Medium discharge device 100;

[0023] Device body 10; medium discharge channel 11; medium inlet 12; medium outlet 13;

[0024] Main pipeline 20; branch pipeline 21;

[0025] First protective layer 30;

[0026] Heating structure 40; heating element 41; second protective layer 42; heating connector 43. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] Reference below Figure 1-Figure 2 A medium discharge device 100 for a fuel cell and a fuel cell according to an embodiment of the present invention are described.

[0029] According to an embodiment of the present invention, a medium discharge device 100 for a fuel cell includes: a device body 10, a medium discharge flow channel 11 is formed in the device body 10, the device body 10 has a medium outlet 13 and multiple medium inlets 12, the medium discharge flow channel 11 connects the medium outlet 13 and each medium inlet 12, at least one medium inlet 12 is used to be directly connected to the liquid discharge structure of the fuel cell, at least one medium inlet 12 is used to be directly connected to the nitrogen discharge structure of the fuel cell, and at least one medium inlet 12 is used to be directly connected to the pressure relief structure of the fuel cell.

[0030] Among them, a medium discharge flow channel 11 is formed in the device body 10 for discharging gas, liquid or a mixture of gas and liquid. The device body 10 has a medium outlet 13 and multiple medium inlets 12. The medium discharge flow channel 11 connects the medium outlet 13 and each medium inlet 12. The gas, liquid or a mixture of gas and liquid enters the medium discharge flow channel 11 from the medium inlet 12 and then discharges the medium discharge flow channel 11 from the medium outlet 13.

[0031] The drainage structure may be a drainage valve, and at least one medium inlet 12 is used to be directly connected to the drainage structure of the fuel cell. For example, there may be one, two, or three medium inlets 12 for being directly connected to the drainage structure of the fuel cell, but the present invention is not limited thereto. Another number of medium inlets 12 may be used to be directly connected to the drainage structure of the fuel cell, as long as at least one medium inlet 12 is used to be directly connected to the drainage structure of the fuel cell. The number of medium inlets 12 for being connected to the drainage structure of the fuel cell may be reasonably set according to actual conditions, as long as the drainage structure can be connected to the medium discharge flow channel 11 through the medium inlet 12.

[0032] The nitrogen exhaust structure may be a nitrogen exhaust valve, and at least one medium inlet 12 is used to be directly connected to the nitrogen exhaust structure of the fuel cell. For example, there may be one, two, three, or other number of medium inlets 12 for being directly connected to the nitrogen exhaust structure of the fuel cell, but the present invention is not limited thereto. There may also be other numbers of medium inlets 12 for being directly connected to the nitrogen exhaust structure of the fuel cell, as long as at least one medium inlet 12 is used to be directly connected to the nitrogen exhaust structure of the fuel cell. The number of medium inlets 12 for being connected to the nitrogen exhaust structure of the fuel cell may be reasonably set according to actual conditions, as long as the nitrogen exhaust structure can be connected to the medium exhaust flow channel 11 through the medium inlet 12.

[0033] The pressure relief structure may be a pressure relief valve, and at least one medium inlet 12 is used to be directly connected to the pressure relief structure of the fuel cell. For example, there may be one, two, three, or other number of medium inlets 12 for being directly connected to the pressure relief structure of the fuel cell, but the present invention is not limited thereto. There may also be other numbers of medium inlets 12 for being directly connected to the pressure relief structure of the fuel cell, as long as at least one medium inlet 12 is used to be directly connected to the pressure relief structure of the fuel cell. The number of medium inlets 12 for being connected to the pressure relief structure of the fuel cell may be reasonably set according to actual conditions, as long as the pressure relief structure can be connected to the medium discharge flow channel 11 through the medium inlet 12.

[0034] As a result, the liquid discharge structure, nitrogen discharge structure, and pressure relief structure can be integrated into the same medium discharge device 100, thereby reducing the space occupied by the medium discharge device 100, reducing external connectors and potential failure points, improving the compactness and integration of the fuel cell, and improving the overall reliability and stability of the fuel cell, thereby improving the overall performance of the fuel cell.

[0035] Furthermore, when media that need to be discharged are generated during fuel cell operation, these media will enter the media discharge flow channel 11 through their respective corresponding media inlets 12. For example, when the internal pressure of the fuel cell is too high, the pressure relief structure will open, and high-pressure gas will enter the media discharge flow channel 11 through the media inlet 12 corresponding to the pressure relief structure. When the electrolyte accumulates to a certain level, the drainage structure will activate, and the excess liquid will flow from the media inlet 12 corresponding to the drainage structure into the media discharge flow channel 11. Within the media discharge flow channel 11, different media may meet and mix, and the mixed media can flow to the media outlet 13 and be discharged from the fuel cell.

[0036] It can be explained that the number and position of the medium inlet 12 and the medium outlet 13 can be flexibly configured according to the specific requirements of the fuel cell to adapt to different working conditions and scene requirements.

[0037] According to the medium discharge device 100 for a fuel cell according to an embodiment of the present invention, by connecting the liquid discharge structure, nitrogen discharge structure, and pressure relief structure to the medium discharge flow channel 11, the liquid discharge structure, nitrogen discharge structure, and pressure relief structure can be integrated into the same medium discharge device 100, thereby reducing the space occupied by the medium discharge device 100, improving the compactness and integration of the fuel cell, and further improving the overall performance of the fuel cell.

[0038] According to some embodiments of the present invention, Figure 1 As shown, the device body 10 includes: a main line 20 and multiple branch lines 21, the multiple branch lines 21 are connected to the main line 20, the main line 20 forms a medium discharge flow channel 11, and the multiple branch lines 21 form a medium inlet 12.

[0039] Among them, the device body 10 may include three, four, five or other numbers of branch pipelines 21, but the present invention is not limited thereto. The device body 10 may also include other numbers of branch pipelines 21, as long as the device body 10 includes multiple branch pipelines 21. Multiple branch pipelines 21 are all connected to the main pipeline 20. For example, the branch pipeline 21 and the main pipeline 20 can be integrally formed, or the branch pipeline 21 and the main pipeline 20 can be fixedly connected by flanges, or the branch pipeline 21 and the main pipeline 20 can be fixedly connected by threads, but the present invention is not limited thereto. The branch pipeline 21 and the main pipeline 20 can also be fixedly connected by other means, as long as multiple branch pipelines 21 are all connected to the main pipeline 20. This application is explained by taking the integral forming of the branch pipeline 21 and the main pipeline 20 as an example. The integral forming design makes the branch pipeline 21 and the main pipeline 20 an integral structure, reduces the connection points, thereby enhancing the integrity and stability of the device body 10, avoiding leakage problems caused by loose or damaged connectors, and improving the reliability and safety of the device body 10.

[0040] The main line 20 is formed with a medium discharge flow channel 11, and the multiple branch lines 21 are each formed with a medium inlet 12. This arrangement allows the liquid discharge structure, nitrogen discharge structure, and pressure relief structure to communicate with the corresponding branch lines 21 through the corresponding medium inlet 12, thereby avoiding the need to directly open holes in the main line 20 as medium inlets 12. This helps maintain the integrity of the main line 20 and allows the access and discharge of medium without affecting the overall structure of the main line 20, thereby improving the safety and reliability of the medium discharge device 100. In addition, when the medium discharge device 100 requires maintenance or overhaul, each medium inlet 12 can be maintained and overhauled independently without disassembling or shutting down the entire main line 20, thereby improving the maintainability and overhaul efficiency of the medium discharge device 100.

[0041] Furthermore, the medium discharge flow channel 11 can simultaneously receive gas, liquid or mixture through multiple branch pipes 21, without the need to set up multiple independent pipes to receive gas, liquid or mixture separately. This can significantly reduce the number of pipes and connection points required for the medium discharge device 100, thereby reducing the space occupied by the medium discharge device 100 in the fuel cell, and can also simplify the structural composition of the medium discharge device 100, reduce material costs, and reduce the workload of installation and maintenance. In addition, the simultaneous discharge of medium by multiple branch pipes 21 can reduce the pressure fluctuations and impacts on each branch pipe 21, thereby improving the stability and safety of the fuel cell. In addition, in an emergency, the fault area can be isolated by closing a specific branch pipe 21 to prevent the accident from spreading, thereby improving the safety and reliability of the fuel cell.

[0042] According to some embodiments of the present invention, multiple branch pipelines 21 can be connected to the corresponding liquid discharge structure, the corresponding nitrogen discharge structure, and the corresponding pressure relief structure through clamps. The clamp connection is simple to install and disassemble, which is conducive to replacing or adjusting the pipeline configuration during the operation or maintenance of the medium discharge device 100, and is also convenient for later maintenance and upgrades.

[0043] According to some embodiments of the present invention, Figure 1 As shown, the main pipeline 20 may be formed with a medium outlet 13 ; and / or the main pipeline 20 may be integrally formed with a plurality of branch pipelines 21 .

[0044] The main line 20 may be formed with a medium outlet 13, or the main line 20 may be integrally formed with multiple branch lines 21, or the main line 20 may be formed with a medium outlet 13 and the main line 20 may be integrally formed with multiple branch lines 21. This application uses the example of the main line 20 being formed with a medium outlet 13 and the main line 20 being integrally formed with multiple branch lines 21 as an example.

[0045] The medium outlet 13 is used to discharge the mixture in the medium discharge flow channel 11, ensuring that the mixture in the medium discharge flow channel 11 can be discharged from the fuel cell according to a predetermined path and conditions, thereby facilitating improved safety and reliability of the fuel cell.

[0046] The main line 20 can be integrally formed with multiple branch lines 21. The integrally formed design makes the branch lines 21 and the main line 20 an integral structure, reducing the connection points, thereby enhancing the integrity and stability of the device body 10, avoiding leakage problems caused by loose or damaged connectors, and improving the reliability and safety of the device body 10. The integrally formed design reduces the use of connectors and seals, thereby reducing material costs. At the same time, since the device body 10 has a compact structure and is easy to install and maintain, it also reduces labor costs and time costs.

[0047] According to some embodiments of the present invention, Figure 1 As shown, at least one of the inner wall of the medium inlet 12 , the inner wall of the medium outlet 13 and the inner wall of the medium discharge channel 11 is provided with a first protective layer 30 .

[0048] Among them, one of the inner wall of the medium inlet 12, the inner wall of the medium outlet 13 and the inner wall of the medium discharge channel 11 is provided with a first protective layer 30, or two of the inner wall of the medium inlet 12, the inner wall of the medium outlet 13 and the inner wall of the medium discharge channel 11 are provided with a first protective layer 30, or the inner wall of the medium inlet 12, the inner wall of the medium outlet 13 and the inner wall of the medium discharge channel 11 are all provided with a first protective layer 30. This application is explained by taking the inner wall of the medium inlet 12, the inner wall of the medium outlet 13 and the inner wall of the medium discharge channel 11 as an example. The first protective layer 30 can be made of a material with corrosion resistance, strong wear resistance and strong sealing performance. For example, the first protective layer 30 can be made of rubber, plastic, ceramic, glass and other materials.

[0049] The medium to be discharged may contain corrosive components, and the medium may cause erosion and wear on the inner wall of the medium inlet 12, the inner wall of the medium outlet 13 and the inner wall of the medium discharge flow channel 11 during the flow process. By providing a first protective layer 30 on the inner wall of the medium inlet 12, the inner wall of the medium outlet 13 and the inner wall of the medium discharge flow channel 11, the medium can be isolated from direct contact with the inner wall of the medium inlet 12, the inner wall of the medium outlet 13 and the inner wall of the medium discharge flow channel 11, thereby preventing or slowing down the corrosion process, protecting the integrity and stability of the device body 10, and reducing the risk of damage or thinning of the inner wall of the medium inlet 12, the inner wall of the medium outlet 13 and the inner wall of the medium discharge flow channel 11 due to wear, and reducing the risk of leakage.

[0050] Therefore, due to the provision of the first protective layer 30 , the risk of damage to the device body 10 can be reduced, thereby reducing the number of maintenance times and maintenance costs of the medium discharge device 100 , which helps to improve the reliability and economy of the medium discharge device 100 .

[0051] According to some embodiments of the present invention, Figure 1 As shown, the medium discharge device 100 may further include: a heating structure 40 , which is provided on the outer surface of the device body 10 .

[0052] The heating structure 40 can be an electric heater, an intelligently controlled heating system, or other structures, as long as the heating structure 40 can be used for heating. The heating structure 40 is provided on the outer surface of the device body 10 and can heat the device body 10, which can indirectly increase the temperature within the medium discharge flow channel 11, thereby reducing the risk of the medium in the medium discharge flow channel 11 freezing in a low-temperature environment. This helps to increase the cold start speed of the fuel cell, ensure the stable operation of the fuel cell, and also help to extend the service life of the fuel cell.

[0053] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the heating structure 40 is mounted on the device body 10, enabling a tight connection between the heating structure 40 and the device body 10. This ensures uniform heating of the device body 10, reduces heat loss, and improves heating efficiency. It also further reduces the risk of ice blockage in the medium discharge flow channel 11 in low-temperature environments, thereby helping to increase the cold start speed of the fuel cell, further ensuring stable operation of the fuel cell, and helping to extend the service life of the fuel cell. Furthermore, the space occupied by the heating structure 40 can be reduced, thereby improving the compactness and integration of the medium discharge device 100.

[0054] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the heating structure 40 includes a heating element 41 , which is disposed around the outside of the device body 10 .

[0055] Among them, the heating element 41 can be a PTC (positive temperature coefficient thermistor), and the heating element 41 can be wound around the outside of the device body 10. For example, the heating element 41 can be spirally wound around the outside of the device body 10. After the heating element 41 is energized, the heating element 41 can evenly heat the device body 10 along the outside of the device body 10, which helps to evenly distribute heat and improve the uniformity and effect of heating. In addition, the PTC thermistor has a high heating efficiency, can quickly heat up and maintain a constant temperature, and can quickly thaw the device body 10 in a cold environment, which is beneficial to improving the cold start speed of the fuel cell.

[0056] It can be explained that the PTC heating element 41 can be flexibly installed and adjusted according to the shape and size of the device body 10 to meet the heating requirements of the device body 10.

[0057] In addition, due to the positive temperature coefficient characteristics of the PTC thermistor, when the temperature rises, its resistance value increases, thereby reducing the current passing through, thereby limiting the heating power and preventing further temperature increase. When the temperature drops, its resistance value decreases, thereby increasing the current passing through, thereby increasing the heating power, and then effectively heating the device body 10, and can achieve automatic temperature regulation, thereby avoiding the occurrence of overheating, improving the safety and stability of the heating process, and reducing energy consumption.

[0058] According to some embodiments of the present invention, Figure 1 As shown, the heating structure 40 further includes a second protective layer 42 , which covers the heating element 41 and abuts against the device body 10 .

[0059] Among them, the second protective layer 42 can be made of plastic material, which has good insulation performance and good wear resistance. The second protective layer 42 is covered on the heating element 41 and the second protective layer 42 is in contact with the device body 10, which can prevent the current or heat generated by the heating element 41 during operation from being directly conducted to the device body 10, thereby avoiding safety hazards such as short circuit and electric shock, and the second protective layer 42 can protect the heating element 41, preventing other components from scratching the heating element 41, so as to reduce the risk of the heating element 41 being worn and damaged, thereby effectively extending the service life of the heating element 41. In addition, the second protective layer 42 can also serve as a temperature buffer layer, which can not only play a role in heat preservation, but also avoid direct heat conduction between the heating element 41 and the device body 10, thereby avoiding damage to the device body 10 due to excessive temperature or affecting the normal operation of other components.

[0060] It can be explained that the second protective layer 42 can be provided with a heating connector 43, which is connected to the heating element 41, and the heating connector 43 is also connected to the power supply. By connecting the heating connector 43 to the power supply and the heating element 41, the heating element 41 can be energized, thereby achieving the effect of the heating element 41 heating the device body 10.

[0061] The fuel cell according to the embodiment of the present invention includes the medium discharge device 100 of the above embodiment, which can integrate the liquid discharge structure, nitrogen discharge structure, and pressure relief structure into the same pipeline, thereby reducing the space occupied by the medium discharge device 100, improving the compactness and integration of the fuel cell, and thus improving the overall performance of the fuel cell.

[0062] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A medium discharge device (100) for a fuel cell, characterized in that: include: A device body (10) is provided, wherein a medium discharge flow channel (11) is formed in the device body (10), the device body (10) has a medium outlet (13) and a plurality of medium inlets (12), the medium discharge flow channel (11) is connected to the medium outlet (13) and each of the medium inlets (12), at least one of the medium inlets (12) is used to be directly connected to the liquid discharge structure of the fuel cell, at least one of the medium inlets (12) is used to be directly connected to the nitrogen discharge structure of the fuel cell, and at least one of the medium inlets (12) is used to be directly connected to the pressure relief structure of the fuel cell, and at least one of the inner wall of the medium inlet (12), the inner wall of the medium outlet (13) and the inner wall of the medium discharge flow channel (11) is provided with a first protective layer (30).

2. The medium discharge device (100) according to claim 1, characterized in that: The device body (10) comprises: a main line (20) and a plurality of branch lines (21), wherein the plurality of branch lines (21) are all connected to the main line (20), the main line (20) is formed with the medium discharge flow channel (11), and the plurality of branch lines (21) are all formed with the medium inlet (12).

3. The medium discharge device (100) according to claim 2, characterized in that: The plurality of branch pipelines (21) are all connected to the corresponding liquid discharge structure, the corresponding nitrogen discharge structure, and the corresponding pressure relief structure through clamps.

4. The medium discharge device (100) according to claim 2, characterized in that The main pipe (20) is formed with the medium outlet (13); and / or The main pipeline (20) and the plurality of branch pipelines (21) are integrally formed.

5. The medium discharge device (100) according to any one of claims 1 to 4, characterized in that: Also includes: A heating structure (40) is provided on the outer surface of the device body (10).

6. The medium discharge device (100) according to claim 5, characterized in that: The heating structure (40) is sleeved on the device body (10).

7. The medium discharge device (100) according to claim 5, characterized in that: The heating structure (40) comprises a heating element (41), and the heating element (41) is arranged around the outside of the device body (10).

8. The medium discharge device (100) according to claim 7, characterized in that: The heating structure (40) further includes a second protective layer (42), the second protective layer (42) covering the heating element (41) and abutting against the device body (10).

9. A fuel cell, characterized in that: The invention comprises a medium discharge device (100) according to any one of claims 1 to 8.

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