Hydrogen supply device

Abstract

This invention discloses a hydrogen supply device. An ejector has a first connecting channel, a second connecting channel, and an ejector outlet. The second connecting channel is connected to the ejector outlet, and the ejector outlet is adapted to connect to the inlet on the anode side of a fuel cell. A drive pump has a first inlet and a first outlet. A gas-liquid separator has a second inlet, a second outlet, and a third outlet. The first connecting channel connects the first inlet and the second outlet, and the second connecting channel connects the first outlet. A bypass check valve is provided between the second connecting channel and the third outlet. Therefore, by connecting the first connecting channel between the first inlet and the second outlet, and by providing a bypass check valve between the second connecting channel and the third outlet, the bypass check valve can be connected in parallel with the drive pump. This allows a portion of the gas flow to be bypassed (i.e., some gas flow does not pass through the drive pump), thereby reducing the power consumption of the drive pump, extending its service life, and improving the reliability of the hydrogen supply system.

Description

Technical Field

[0001] This invention relates to the field of gas supply equipment, and in particular to a hydrogen supply device. Background Technology

[0002] In the field of fuel cells, hydrogen supply systems generally adopt hydrogen circulation, which involves supplying hydrogen to the anode of the fuel cell through a series connection of a hydrogen pump and an ejector. However, current hydrogen supply systems suffer from high power consumption of the hydrogen pump, resulting in a short pump life and affecting the reliability of the hydrogen supply system. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a hydrogen supply device that can reduce the power consumption of the drive pump, thereby extending the service life of the drive pump.

[0004] The hydrogen supply device according to the present invention includes: an ejector having a first connecting channel, a second connecting channel, and an ejector outlet, the second connecting channel communicating with the ejector outlet, and the ejector outlet adapted to communicate with an inlet on the anode side of a fuel cell; a drive pump and a vapor-liquid separator, the drive pump having a first inlet and a first outlet, the first inlet communicating with the first outlet; the vapor-liquid separator having a second inlet, a second outlet, and a third outlet, the second inlet adapted to communicate with an outlet on the anode side of a fuel cell, the first connecting channel communicating between the first inlet and the second outlet, and the second connecting channel communicating with the first outlet; and a bypass one-way valve provided between the second connecting channel and the third outlet, the one-way bypass valve being configured to conduct unidirectionally from the third outlet to the second connecting channel.

[0005] According to the hydrogen supply device of the present invention, by connecting the first connecting channel between the first inlet and the second outlet, and by providing a bypass check valve between the second connecting channel and the third outlet, the bypass check valve can be connected in parallel with the drive pump, thereby bypassing part of the gas flow (i.e., part of the gas flow does not pass through the drive pump), thereby reducing the power consumption of the drive pump, extending the service life of the drive pump, and improving the reliability of the hydrogen supply device.

[0006] In some examples of the present invention, the ejector has two opposing ends, and the drive pump and the steam-water separator are respectively disposed at the two ends of the ejector.

[0007] In some examples of the present invention, the hydrogen supply device further includes a bypass control valve, the ejector further having an inlet, a first inlet chamber, a second inlet chamber, and a bypass channel, the first inlet chamber being connected between the inlet and the second inlet chamber, the second inlet chamber being connected to the ejector outlet, the bypass channel being connected between the first inlet chamber and the ejector outlet, and the bypass control valve being disposed on the ejector and used to control the opening degree of the bypass channel.

[0008] In some examples of the present invention, the hydrogen supply device further includes: a first control valve, the ejector having a third communication channel connecting the air inlet and the first air inlet chamber, the first control valve being disposed in the ejector and used to control the opening of the third communication channel.

[0009] In some examples of the present invention, the hydrogen supply device further includes: at least one second control valve, the ejector also having at least one fourth connecting channel, the fourth connecting channel connecting between the first air inlet chamber and the second air inlet chamber, the second control valve being disposed on the ejector and corresponding to each of the fourth connecting channels, the second control valve being used to control the opening degree of the corresponding fourth connecting channel.

[0010] In some examples of the present invention, the ejector further includes a nozzle and an air inlet chamber, the nozzle being connected between the air inlet chamber and the second air inlet cavity, and the air inlet chamber being connected to the ejector outlet and the second communication channel.

[0011] In some examples of the invention, the ejector also has a fifth connecting channel that connects the inlet chamber and the ejector outlet, and the flow area of ​​at least a portion of the fifth connecting channel gradually increases from the inlet chamber to the ejector outlet.

[0012] In some examples of the present invention, the first air intake chamber and the second air intake chamber are arranged in parallel.

[0013] In some examples of the present invention, the hydrogen supply device further includes: a first sensor, which is disposed on the ejector and is used to detect the gas pressure at the third communication channel; And / or, the hydrogen supply device further includes: a second sensor, the second sensor being disposed at the ejector and used to detect the gas pressure at the ejector outlet.

[0014] In some examples of the present invention, the first connecting channel and the second connecting channel extend through the ejector; And / or, the bypass check valve is located in the ejector and / or the steam-water separator; And / or, it further includes: a connecting pipe, wherein the second outlet is connected to the first communication channel via the connecting pipe.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a hydrogen supply device according to an embodiment of the present invention; Figure 2 This is a top view of the hydrogen supply device according to an embodiment of the present invention; Figure 3 for Figure 1 Sectional view at point AA; Figure 4 for Figure 2 Sectional view at point DD; Figure 5 This is a schematic diagram of a steam-water separator according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the ejector according to an embodiment of the present invention.

[0017] Figure label: Hydrogen supply device 100; Drive pump 1; ejector 2; sensor mounting base 3; third sensor 4; fourth sensor 5; second inlet 6; steam-water separator 7; drain valve 8; exhaust valve 9; second control valve 10; first control valve 13; ejector outlet 14; second sensor 15; first sensor 16; bypass control valve 17; nozzle 18; nozzle cap 19; first plug 20; air inlet 21; second plug 22; first mounting hole 23; bypass channel 24; second mounting hole 25; first air inlet chamber 26; first connecting channel 27; second connecting channel 28; second air inlet chamber 29; bypass control valve mounting hole 30; connecting pipe 31; bypass check valve 32; first outlet 33; first inlet 34; third outlet 35; second outlet 36; third mounting hole 37; air inlet chamber 38; separation chamber 39; third connecting channel 40; fourth connecting channel 41; fifth connecting channel 42. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The following is for reference. Figures 1-6 A hydrogen supply device 100 according to an embodiment of the present invention is described.

[0020] like Figures 1-6 As shown, the hydrogen supply device 100 according to an embodiment of the present invention includes: an ejector 2, a drive pump 1, a gas-water separator 7, and a bypass check valve 32.

[0021] The ejector 2 has a first connecting channel 27, a second connecting channel 28, and an ejector outlet 14. The second connecting channel 28 is connected to the ejector outlet 14, and the ejector outlet 14 is adapted to be connected to the inlet on the anode side of the fuel cell. The drive pump 1 has a first inlet 34 and a first outlet 33, and the first inlet 34 is connected to the first outlet 33. The gas-water separator 7 has a second inlet 6, a second outlet 36, and a third outlet 35. The second inlet 6 is adapted to be connected to the outlet on the anode side of the fuel cell. The first connecting channel 27 is connected between the first inlet 34 and the second outlet 36, and the second connecting channel 28 is connected to the first outlet 33. A bypass check valve 32 is provided between the second connecting channel 28 and the third outlet 35. The bypass check valve 32 is configured to conduct unidirectionally from the third outlet 35 to the second connecting channel 28.

[0022] As some embodiments of this application, the first connecting channel 27 and the second connecting channel 28 can penetrate the ejector 2 along the first direction.

[0023] The second connecting channel 28 is connected to the ejector outlet 14, and the ejector outlet 14 is connected to the inlet on the anode side of the fuel cell. In other words, the second connecting channel 28 can be connected to the inlet on the anode side of the fuel cell through the ejector outlet 14.

[0024] The drive pump 1 can be, but is not limited to, a mechanical drive pump, a centrifugal drive pump, etc. As some embodiments of this application, the drive pump 1 is a centrifugal drive pump. The drive pump 1 can pressurize hydrogen gas to ensure the continuity and stability of hydrogen gas supply. The drive pump 1 has a first inlet 34 and a first outlet 33, which are connected. As some embodiments of this application, hydrogen gas can flow in from the first inlet 34 and flow out from the first outlet 33.

[0025] The gas-water separator 7 can separate liquid water with larger particle diameters from hydrogen. The gas-water separator 7 has a second inlet 6, a second outlet 36 and a third outlet 35. The second inlet 6 of the gas-water separator 7 can be connected to the outlet on the anode side of the fuel cell so that hydrogen flowing out from the anode side of the fuel cell can flow into the gas-water separator 7. The first connecting channel 27 connects the first inlet 34 and the second outlet 36, and the second connecting channel 28 connects the first outlet 33.

[0026] The bypass check valve 32 is disposed between the second connecting channel 28 and the third outlet 35. The bypass check valve 32 is configured to conduct in one direction from the third outlet 35 to the second connecting channel 28. In other words, the bypass check valve 32 can only allow hydrogen to flow in one direction from the third outlet 35 to the second connecting channel 28.

[0027] As some embodiments of this application, when the hydrogen supply device 100 is at low power, hydrogen can enter the steam-water separator 7 through the second inlet 6, enter the drive pump 1 from the second outlet 36 of the steam-water separator 7 along the first connecting channel 27 and the first inlet 34, and flow out from the ejector outlet 14 from the first outlet 33 along the second connecting channel 28.

[0028] As some embodiments of this application, when the hydrogen supply device 100 is at medium or high power, hydrogen enters the gas-water separator 7 through the second inlet 6 and is split into two streams. One part of the hydrogen enters the drive pump 1 from the second outlet 36 of the gas-water separator 7 along the first connecting channel 27 and the first inlet 34, and flows out from the ejector outlet 14 from the first outlet 33 along the second connecting channel 28. The other part enters the second connecting channel 28 from the third outlet 35 through the bypass check valve 32, and flows out from the ejector outlet 14 along the second connecting channel 28. Because of the bypass check valve 32, the gas that enters the drive pump 1 along the first connecting channel 27 and the first inlet 34 and flows from the first outlet 33 to the second connecting channel 28 will not flow back through the third outlet 35.

[0029] As some embodiments of this application, the bypass check valve 32 is constructed as a mechanical bypass check valve. The mechanical bypass check valve can open and close according to the gas pressure between the ejector 2 and the gas-water separator 7, thereby diverting hydrogen and reducing the power consumption of the drive pump 1.

[0030] As some embodiments of this application, the bypass check valve 32 is constructed as an electromagnetic bypass check valve, which can open and close according to an electrical signal, thereby diverting hydrogen and reducing the power consumption of the drive pump 1.

[0031] It should be noted that by placing the bypass check valve 32 between the second connecting channel 28 and the third outlet 35, and by configuring the bypass check valve 32 to conduct unidirectionally from the third outlet 35 to the second connecting channel 28, the flow control of hydrogen can be achieved, thereby reducing the power consumption and loss of the drive pump 1 and extending the service life of the drive pump 1. Furthermore, this arrangement allows the hydrogen supply device 100 to be designed reasonably and has a compact structure. By integrating the drive pump 1, the gas-liquid separator 7, and the ejector 2, the hydrogen supply device 100 can be applied to hydrogen fuel cell systems with limited installation space, which is beneficial to improving the applicability of the hydrogen supply device 100.

[0032] Therefore, by connecting the first connecting channel 27 between the first inlet 34 and the second outlet 36, and by providing a bypass check valve 32 between the second connecting channel 28 and the third outlet 35, the bypass check valve 32 can be connected in parallel with the drive pump 1, thereby bypassing part of the gas flow (i.e., part of the gas flow does not pass through the drive pump 1), thereby reducing the power consumption of the drive pump 1, extending the service life of the drive pump 1, and improving the reliability of the hydrogen supply device 100.

[0033] In some embodiments of the present invention, such as Figure 1 As shown, ejector 2 has two opposite ends, with drive pump 1 and steam-water separator 7 respectively located at the two ends of ejector 2.

[0034] As some embodiments of this application, along the first direction, the ejector 2 has two opposite ends, a drive pump 1 is provided on one side of the ejector 2, and a steam-water separator 7 is provided on the other side of the ejector 2. Furthermore, the drive pump 1 and the steam-water separator 7 are both directly provided on the ejector 2.

[0035] By placing the drive pump 1 and the gas-water separator 7 at opposite ends of the ejector 2, the hydrogen supply device 100 can be made compact and highly integrated, reducing the assembly difficulty of the hydrogen supply device 100 and the required pipeline length. This makes the hydrogen supply device 100 suitable for hydrogen fuel cell systems with limited installation space, thus improving the space utilization of the hydrogen supply device 100.

[0036] In some embodiments of the present invention, such as Figures 1-3 , Figure 6 As shown, the hydrogen supply device 100 also includes a bypass control valve 17. The ejector 2 also has an inlet 21, a first inlet chamber 26, a second inlet chamber 29, and a bypass channel 24. The first inlet chamber 26 is connected between the inlet 21 and the second inlet chamber 29. The second inlet chamber 29 is connected to the ejector outlet 14. The bypass channel 24 is connected between the first inlet chamber 26 and the ejector outlet 14. The bypass control valve 17 is located on the ejector 2 and is used to control the opening degree of the bypass channel 24.

[0037] The ejector 2 also includes an air inlet 21, a first air inlet chamber 26, a second air inlet chamber 29, and a bypass channel 24. The first air inlet chamber 26 is connected between the air inlet 21 and the second air inlet chamber 29, and the second air inlet chamber 29 is connected to the ejector outlet 14. As some embodiments of this application, the air inlet 21 of the ejector 2 can be connected to a hydrogen supply device. The hydrogen from the hydrogen supply device can flow into the first air inlet chamber 26 through the air inlet 21, and then flow into the second air inlet chamber 29 from the first air inlet chamber 26, and finally flow from the ejector outlet 14 to the fuel cell anode through the second air inlet chamber 29.

[0038] A bypass channel 24 connects the first intake chamber 26 and the ejector outlet 14. A bypass control valve 17 is located in the ejector 2 and is used to control the opening of the bypass channel 24. That is, by controlling the bypass control valve 17, the opening of the bypass channel 24 can be adjusted, thereby controlling the flow rate of hydrogen from the first intake chamber 26 into the bypass channel 24. In some embodiments of this application, the bypass control valve 17 is controlled to increase the opening of the bypass channel 24, thereby increasing the flow rate of hydrogen from the first intake chamber 26 into the bypass channel 24. In some embodiments of this application, the bypass control valve 17 is controlled to decrease the opening of the bypass channel 24, thereby decreasing the flow rate of hydrogen from the first intake chamber 26 into the bypass channel 24.

[0039] As some embodiments of this application, the ejector 2 includes a bypass control valve mounting hole 30, and a bypass control valve 17 is disposed in the bypass control valve mounting hole 30 so that the bypass control valve 17 is disposed in the ejector 2.

[0040] As some embodiments of this application, the air inlet 21 of the ejector 2 can be connected to a hydrogen supply device. After the hydrogen enters the ejector 2, a portion of the hydrogen flows from the first air inlet chamber 26 into the second air inlet chamber 29, and then flows from the ejector outlet 14 to the anode side of the fuel cell through the second air inlet chamber 29. Another portion of the hydrogen flows directly from the first air inlet chamber 26 into the bypass channel 24, and then flows from the ejector outlet 14 to the anode side of the fuel cell through the bypass channel 24.

[0041] This configuration allows the hydrogen supply device 100 to be set up reasonably, enabling the hydrogen flowing into the ejector 2 from the inlet 21 to be diverted. Furthermore, the amount of hydrogen passing through the bypass channel 24 can be adjusted by controlling the opening of the bypass control valve 17, allowing for rapid replenishment of the fuel cell anode side with a fast response speed.

[0042] In some embodiments of the present invention, such as Figures 1-3 , Figure 6As shown, the hydrogen supply device 100 also includes: a first control valve 13, and the ejector 2 also has a third connecting channel 40, which connects the air inlet 21 and the first air inlet chamber 26. The first control valve 13 is located on the ejector 2 and is used to control the opening of the third connecting channel 40.

[0043] The first control valve 13 is disposed in the ejector 2. In some embodiments of this application, the first control valve 13 is located between the air inlet 21 and the third connecting channel 40. The first control valve 13 is used to control the opening degree of the third connecting channel 40. That is, by controlling the first control valve 13, the opening degree of the third connecting channel 40 can be adjusted, thereby controlling the amount of hydrogen flowing into the first air intake chamber 26 from the air inlet 21. In some embodiments of this application, controlling the first control valve 13 to increase the opening degree of the third connecting channel 40 can increase the amount of hydrogen flowing into the first air intake chamber 26 from the air inlet 21. In some embodiments of this application, controlling the first control valve 13 to decrease the opening degree of the third connecting channel 40 can decrease the amount of hydrogen flowing into the first air intake chamber 26 from the air inlet 21.

[0044] As some embodiments of this application, the air inlet 21 of the ejector 2 is connected to a hydrogen supply device. After hydrogen enters the ejector 2 through the air inlet 21, it enters the first air inlet chamber 26 through the third connecting channel 40. After entering the first air inlet chamber 26, part of the hydrogen flows from the first air inlet chamber 26 into the second air inlet chamber 29, and then flows from the ejector outlet 14 to the anode side of the fuel cell through the second air inlet chamber 29. Another part of the hydrogen flows directly from the first air inlet chamber 26 into the bypass channel 24, and then flows from the ejector outlet 14 to the anode side of the fuel cell through the bypass channel 24.

[0045] This configuration allows the hydrogen supply device 100 to be set up reasonably, and can accurately control and adjust the amount of hydrogen flowing into the ejector 2 to meet the gas demand of the anode side of the fuel cell.

[0046] In some embodiments of the present invention, such as Figures 1-3 , Figure 6 As shown, the hydrogen supply device 100 further includes: at least one second control valve 10, and the ejector 2 also has at least one fourth communication channel 41, which connects the first air inlet chamber 26 and the second air inlet chamber 29. The second control valve 10 is located on the ejector 2 and corresponds one-to-one with the fourth communication channel 41. The second control valve 10 is used to control the opening degree of the corresponding fourth communication channel 41.

[0047] As some embodiments of this application, the hydrogen supply device 100 includes a second control valve 10 and a fourth communication channel 41. The second control valve 10 is located on the ejector 2 and is correspondingly arranged with respect to the fourth communication channel 41.

[0048] As some embodiments of this application, the hydrogen supply device 100 includes a plurality of second control valves 10, the number of which may be, but is not limited to, two, three, four, etc. The ejector 2 has a plurality of fourth connecting channels 41, the number of which may be, but is not limited to, two, three, four, etc. For example, the number of both the second control valves 10 and the fourth connecting channels 41 is three, and the three second control valves 10 and the three fourth connecting channels 41 are arranged in a one-to-one correspondence. Each fourth connecting channel 41 is connected between the first air inlet chamber 26 and the second air inlet chamber 29.

[0049] The second control valve 10 is disposed in the ejector 2. In some embodiments of this application, the second control valve 10 is located between the first intake chamber 26 and the corresponding fourth connecting channel 41, and is used to control the opening degree of the corresponding fourth connecting channel 41. That is, by controlling the second control valve 10, the opening degree of the corresponding fourth connecting channel 41 can be adjusted, thereby controlling the amount of hydrogen flowing from the first intake chamber 26 into the second intake chamber 29. In some embodiments of this application, controlling the second control valve 10 to increase the opening degree of the corresponding fourth connecting channel 41 can increase the amount of hydrogen flowing from the first intake chamber 26 into the second intake chamber 29. In some embodiments of this application, controlling the second control valve 10 to decrease the opening degree of the corresponding fourth connecting channel 41 can decrease the amount of hydrogen flowing from the first intake chamber 26 into the second intake chamber 29.

[0050] It should be noted that by setting multiple second control valves 10 and multiple fourth connecting channels 41, the power requirements of the hydrogen supply device 100 can be met.

[0051] As some embodiments of this application, the air inlet 21 of the ejector 2 is connected to a hydrogen supply device. After hydrogen enters the ejector 2 through the air inlet 21, it enters the first air inlet chamber 26 through the third connecting channel 40. After entering the first air inlet chamber 26, part of the hydrogen flows from the first air inlet chamber 26 into the second air inlet chamber 29 through the fourth connecting channel 41, and then flows along the second air inlet chamber 29 from the ejector outlet 14 to the anode side of the fuel cell. Another part of the hydrogen flows directly from the first air inlet chamber 26 into the bypass channel 24, and flows from the ejector outlet 14 to the anode side of the fuel cell through the bypass channel 24.

[0052] By including at least one second control valve 10 and at least one fourth communication channel 41 in the hydrogen supply device 100, the opening degree of the corresponding fourth communication channel 41 can be controlled by the second control valve 10, thereby regulating the power of the hydrogen supply device 100 so that the hydrogen supply device 100 meets the usage requirements.

[0053] In some embodiments of the present invention, such as Figure 3As shown, the ejector 2 also has a nozzle 18 and an air inlet chamber 38. The nozzle 18 is connected between the air inlet chamber 38 and the second air inlet cavity 29. The air inlet chamber 38 is connected to the ejector outlet 14 and the second connecting channel 28.

[0054] As some embodiments of this application, the ejector 2 also includes a nozzle cap 19, which is disposed on the ejector 2 and is disposed corresponding to the nozzle 18. This arrangement can improve the installation stability of the nozzle 18.

[0055] As some embodiments of this application, the ejector 2 also includes a first plug 20 and a second plug 22. The first plug 20 is disposed at one end of the second air intake chamber 29, and the second plug 22 is disposed at one end of the first air intake chamber 26 to ensure the sealing performance of the first air intake chamber 26 and the second air intake chamber 29.

[0056] As some embodiments of this application, the air inlet 21 of the ejector 2 is connected to a hydrogen supply device. After hydrogen enters the ejector 2 through the air inlet 21, it enters the first air inlet chamber 26 through the third connecting channel 40. After entering the first air inlet chamber 26, part of the hydrogen flows from the first air inlet chamber 26 into the second air inlet chamber 29 through the fourth connecting channel 41, and then flows from the second air inlet chamber 29 into the air inlet chamber 38 through the nozzle 18. Finally, it flows from the ejector outlet 14 to the anode side of the fuel cell. Another part of the hydrogen flows directly from the first air inlet chamber 26 into the bypass channel 24, and flows from the ejector outlet 14 to the anode side of the fuel cell through the bypass channel 24.

[0057] By including a nozzle 18 and an inlet chamber 38 in the ejector 2, the pressure and flow rate of hydrogen can be increased, which is beneficial to improving the gas supply efficiency of the hydrogen supply device 100. Furthermore, the bypass channel 24 can bypass the nozzle 18, so that some hydrogen flows directly from the first inlet chamber 26 into the bypass channel 24 and flows from the ejector outlet 14 to the anode side of the fuel cell through the bypass channel 24, which can quickly replenish the gas to the anode side of the fuel cell and has a fast response speed.

[0058] In some embodiments of the present invention, such as Figure 3 As shown, the ejector 2 also has a fifth connecting channel 42, which connects the air inlet chamber 38 and the ejector outlet 14, and the flow area of ​​at least a portion of the fifth connecting channel 42 gradually increases from the air inlet chamber 38 to the ejector outlet 14.

[0059] As some embodiments of this application, the air inlet 21 of the ejector 2 is connected to a hydrogen supply device. After hydrogen enters the ejector 2 through the air inlet 21, it enters the first air inlet chamber 26 through the third connecting channel 40. After entering the first air inlet chamber 26, part of the hydrogen flows from the first air inlet chamber 26 into the second air inlet chamber 29 through the fourth connecting channel 41, and then flows from the second air inlet chamber 29 into the inlet chamber 38 through the nozzle 18. The hydrogen flowing into the inlet chamber 38 flows from the ejector outlet 14 to the anode side of the fuel cell through the fifth connecting channel 42. Another part of the hydrogen flows directly from the first air inlet chamber 26 into the bypass channel 24, and flows from the ejector outlet 14 to the anode side of the fuel cell through the bypass channel 24.

[0060] From the direction of the air inlet chamber 38 to the ejector outlet 14, such as Figure 3 As shown, at least a portion of the flow area of ​​the fifth connecting channel 42 gradually increases. As some embodiments of this application, from the air inlet chamber 38 to the ejector outlet 14, a portion of the flow area of ​​the fifth connecting channel 42 gradually increases. As some embodiments of this application, from the air inlet chamber 38 to the ejector outlet 14, the flow area of ​​the fifth connecting channel 42 gradually increases.

[0061] This configuration allows for a reasonable structure of ejector 2, reducing disturbances and improving the stability and smoothness of the hydrogen flowing out of ejector 2.

[0062] In some embodiments of the present invention, such as Figure 3 As shown, the first air intake chamber 26 and the second air intake chamber 29 are arranged in parallel, that is, the axes of the first air intake chamber 26 and the second air intake chamber 29 are parallel to each other. By arranging the first air intake chamber 26 and the second air intake chamber 29 in parallel, the structure of the ejector 2 can be made more reasonable, which is conducive to reducing the volume of the ejector 2. This makes the hydrogen supply device 100 suitable for hydrogen fuel cell systems with limited installation space, and helps to improve the space utilization rate of the hydrogen supply device 100.

[0063] In some embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 6 As shown, the hydrogen supply device 100 further includes a first sensor 16, which is located on the ejector 2 and is used to detect the gas pressure at the third communication channel 40.

[0064] As some embodiments of this application, the ejector 2 has a first mounting hole 23, and a first sensor 16 can be mounted in the first mounting hole 23. The first sensor 16 is connected to a third communication channel 40. The gas pressure in the third communication channel 40 can act on the first sensor 16 so that the first sensor 16 can detect the gas pressure in the third communication channel 40. This configuration can detect the gas pressure in the third communication channel 40 so as to control the first control valve 13 according to the gas pressure in the third communication channel 40.

[0065] In some embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 6 As shown, the hydrogen supply device 100 also includes a second sensor 15, which is located on the ejector 2 and is used to detect the gas pressure at the ejector outlet 14.

[0066] As some embodiments of this application, the ejector 2 has a second mounting hole 25, and a second sensor 15 can be mounted in the second mounting hole 25. The second sensor 15 is connected to the ejector outlet 14, and the gas pressure at the ejector outlet 14 can act on the second sensor 15 so that the second sensor 15 can detect the gas pressure at the ejector outlet 14, so as to control the second control valve 10 according to the gas pressure at the ejector outlet 14, thereby regulating the power of the hydrogen supply device 100.

[0067] In some embodiments of the present invention, such as Figure 1 , Figure 3 and Figure 6 As shown, the hydrogen supply device 100 also includes a third sensor 4, which is located on the ejector 2 and is used to detect the gas pressure at the inlet of the nozzle 18.

[0068] As some embodiments of this application, the ejector 2 has a third mounting hole 37, which is provided in the ejector 2. The hydrogen supply device 100 further includes a sensor mounting base 3, which is mounted in the second mounting hole 25. A third sensor 4 is mounted in the sensor mounting base 3 and is connected to the inlet of the nozzle 18 to detect the gas pressure at the inlet of the nozzle 18, so as to control the bypass control valve 17, the second control valve 10, and the first control valve 13 according to the gas pressure at the inlet of the nozzle 18.

[0069] As some embodiments of this application, the hydrogen supply device 100 further includes a fourth sensor 5, which is disposed in the vapor-water separator 7. As some embodiments of this application, the vapor-water separator 7 includes a separation chamber 39, and the fourth sensor 5 is connected to the separation chamber 39 to detect the hydrogen pressure within the separation chamber 39. As some embodiments of this application, the vapor-water separator 7 includes a drain valve 8 and an exhaust valve 9. The drain valve 8 is disposed below the vapor-water separator 7, and the exhaust valve 9 is disposed in the separation chamber 39 of the vapor-water separator 7.

[0070] In some embodiments of the present invention, such as Figure 4 As shown, the first connecting channel 27 and the second connecting channel 28 penetrate the ejector 2. Specifically, the first connecting channel 27 and the second connecting channel 28 can penetrate the ejector 2 along the first direction. By making the first connecting channel 27 and the second connecting channel 28 penetrate the ejector 2, the structure of the ejector 2 is reasonable, which can reduce the difficulty of forming the first connecting channel 27 and the second connecting channel 28 and help reduce the production difficulty of the ejector 2.

[0071] In some embodiments of the present invention, a bypass check valve 32 is provided on the ejector 2 and / or the steam-water separator 7.

[0072] In some embodiments of this application, the bypass check valve 32 is provided in the ejector 2; in some embodiments of this application, the bypass check valve 32 is provided in the steam-water separator 7; in some embodiments of this application, the bypass check valve 32 is provided in both the ejector 2 and the steam-water separator 7.

[0073] This configuration allows for a reasonable placement of the bypass check valve 32, reduces the difficulty of setting up the bypass check valve 32, and improves the installation efficiency of the bypass check valve 32.

[0074] In some embodiments of the present invention, such as Figure 4 As shown, the hydrogen supply device 100 also includes a connecting pipe 31, through which the second outlet 36 is connected to the first connecting channel 27. In other words, the connecting pipe 31 can connect the second outlet 36 to the first connecting channel 27. By connecting the second outlet 36 to the first connecting channel 27 through the connecting pipe 31, the sealing performance of the hydrogen supply device 100 can be improved, the probability of hydrogen leakage can be reduced, and the reliability of the hydrogen supply device 100 can be improved.

[0075] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0076] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0077] In the description of this invention, "a plurality of" means two or more.

[0078] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0079] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do 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 one or more embodiments or examples.

[0081] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A hydrogen supply device (100), characterized in that, include: The ejector (2) has a first communication channel (27), a second communication channel (28) and an ejector outlet (14), the second communication channel (28) being connected to the ejector outlet (14), and the ejector outlet (14) being adapted to be connected to the inlet on the anode side of the fuel cell; A drive pump (1) and a steam-water separator (7) are provided. The drive pump (1) has a first inlet (34) and a first outlet (33), and the first inlet (34) is connected to the first outlet (33). The steam-water separator (7) has a second inlet (6), a second outlet (36) and a third outlet (35), and the second inlet (6) is adapted to be connected to the outlet on the anode side of the fuel cell. A first connecting channel (27) is connected between the first inlet (34) and the second outlet (36), and the second connecting channel (28) is connected to the first outlet (33). A bypass check valve (32) is provided between the second communication channel (28) and the third outlet (35). The bypass check valve (32) is configured to conduct unidirectionally from the third outlet (35) to the second communication channel (28).

2. The hydrogen supply device (100) according to claim 1, characterized in that, The ejector (2) has two opposite ends, and the drive pump (1) and the steam-water separator (7) are respectively located at the two ends of the ejector (2).

3. The hydrogen supply device (100) according to claim 1, characterized in that, Also includes: The ejector (2) also has an air inlet (21), a first air inlet chamber (26), a second air inlet chamber (29), and a bypass channel (24). The first air inlet chamber (26) is connected between the air inlet (21) and the second air inlet chamber (29). The second air inlet chamber (29) is connected to the ejector outlet (14). The bypass channel (24) is connected between the first air inlet chamber (26) and the ejector outlet (14). The bypass control valve (17) is located on the ejector (2) and is used to control the opening of the bypass channel (24).

4. The hydrogen supply device (100) according to claim 3, characterized in that, Also includes: The first control valve (13) and the ejector (2) also have a third connecting channel (40) which connects the air inlet (21) and the first air inlet chamber (26). The first control valve (13) is located on the ejector (2) and is used to control the opening of the third connecting channel (40).

5. The hydrogen supply device (100) according to claim 3, characterized in that, Also includes: At least one second control valve (10) is provided, and the ejector (2) also has at least one fourth connecting channel (41) connected between the first air intake chamber (26) and the second air intake chamber (29). The second control valve (10) is provided on the ejector (2) and corresponds one-to-one with the fourth connecting channel (41). The second control valve (10) is used to control the opening degree of the corresponding fourth connecting channel (41).

6. The hydrogen supply device (100) according to claim 3, characterized in that, The ejector (2) also has a nozzle (18) and an air inlet chamber (38), the nozzle (18) being connected between the air inlet chamber (38) and the second air inlet cavity (29), and the air inlet chamber (38) being connected to the ejector outlet (14) and the second communication channel (28).

7. The hydrogen supply device (100) according to claim 6, characterized in that, The ejector (2) also has a fifth connecting channel (42) that connects the air inlet chamber (38) and the ejector outlet (14), and the flow area of ​​at least a portion of the fifth connecting channel (42) gradually increases from the air inlet chamber (38) to the ejector outlet (14).

8. The hydrogen supply device (100) according to claim 3, characterized in that, The first air intake chamber (26) and the second air intake chamber (29) are arranged in parallel.

9. The hydrogen supply device (100) according to claim 4, characterized in that, The hydrogen supply device (100) further includes: a first sensor (16), which is located on the ejector (2) and is used to detect the gas pressure at the third communication channel (40); And / or, the hydrogen supply device (100) further includes: a second sensor (15), which is located on the ejector (2) and is used to detect the gas pressure at the ejector outlet (14).

10. The hydrogen supply device (100) according to any one of claims 1-9, characterized in that, The first connecting channel (27) and the second connecting channel (28) pass through the ejector (2); And / or, the bypass check valve (32) is located on the ejector (2) and / or the steam-water separator (7); And / or, it also includes: a connecting pipe (31), through which the second outlet (36) is connected to the first communication channel (27).

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