Hydrogen inlet assembly and system

Abstract

The present invention discloses a hydrogen inlet assembly and system. The hydrogen inlet assembly includes a base, wherein a first flow channel, a second flow channel, and a third flow channel are provided in the base, which are connected in sequence; a filter, which is fixed to the base and whose outlet is connected to the first flow channel; a first flow regulating valve, which is fixed to the base and partially extends into the second flow channel and is used to regulate the flow of fluid passing through the second flow channel; and an ejector, which is fixed to the base and whose inlet is connected to the third flow channel. The present invention can simplify the structure of the hydrogen inlet assembly.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a hydrogen intake assembly and a hydrogen intake system. Background Art

[0002] Fuel cells generate electricity, heat, and water through an electrochemical reaction between hydrogen stored in cylinders and atmospheric oxygen. Their high conversion efficiency, lack of harmful chemicals, and low noise levels have led to their widespread adoption in the automotive industry. The hydrogen supply system, as a key component of a fuel cell, plays a crucial role.

[0003] In existing technology, the hydrogen supply system of a fuel cell includes a hydrogen inlet assembly, which includes components such as a heater, filter, shutoff valve, proportional valve, and ejector. New hydrogen output from the hydrogen bottle flows through the heater, filter, shutoff valve, proportional valve, and ejector in sequence to the fuel cell stack for electrochemical reaction.

[0004] The structure of the hydrogen supply assembly in the prior art is too complicated and bulky. Summary of the Invention

[0005] In order to overcome the defects of the prior art, the present invention proposes a hydrogen inlet assembly and a hydrogen inlet system, which can simplify the structure of the hydrogen inlet assembly.

[0006] The present invention provides a hydrogen inlet assembly, characterized by comprising:

[0007] A base, wherein a first flow channel, a second flow channel, and a third flow channel are provided in the interior of the base and are connected in sequence;

[0008] a filter, the filter being fixed on the base, the outlet of the filter being in communication with the first flow channel;

[0009] a first flow regulating valve, the first flow regulating valve being fixed to the base, a portion of the first flow regulating valve extending into the second flow channel, the first flow regulating valve being used to regulate a flow of a fluid passing through the second flow channel;

[0010] The ejector is fixed on the base, and the inlet of the ejector is connected to the third flow channel.

[0011] Optionally, the base has a first surface for fixing the filter, a second surface for fixing the first flow regulating valve, and a third surface for fixing the ejector, the first flow channel is arranged on the first surface, the second flow channel is arranged on the second surface, and the third flow channel is arranged on the third surface, and the extension line of the first surface and the extension line of the second surface respectively have an angle with the extension line of the third surface.

[0012] Optionally, the first surface and the third surface are located on the same side of the base, the first surface and the third surface are located on different surfaces, and the first surface and the third surface are parallel.

[0013] Optionally, the hydrogen inlet assembly further includes a second flow regulating valve fixed on the base;

[0014] The base also includes a fourth flow channel and a sixth flow channel, the fourth flow channel is connected to the second flow channel, the sixth flow channel is connected to the fourth flow channel, a portion of the second flow regulating valve extends into the fourth flow channel and is located between the fourth flow channel and the sixth flow channel, and the second flow regulating valve is used to adjust the fluid flow passing through the sixth flow channel.

[0015] Optionally, the base further has a fourth surface opposite to the second surface, the fourth flow channel is provided on the fourth surface, the center line of the fourth flow channel coincides with the center line of the second flow channel, and the second flow regulating valve is fixed to the fourth surface.

[0016] Optionally, the hydrogen inlet assembly further includes a shut-off valve;

[0017] The base has a fifth surface, which is located between the second surface and the fourth surface. A fifth flow channel connected to the second flow channel is provided on the fifth surface. The shut-off valve is fixed to the fifth surface. Part of the shut-off valve extends into the fifth flow channel and is located in the second flow channel and / or the fourth flow channel. The shut-off valve is used to regulate the fluid flow passing through the second flow channel and / or the fourth flow channel.

[0018] Optionally, the hydrogen inlet assembly further includes a pressure relief valve and a pressure relief valve bracket;

[0019] The base also includes a sixth surface, the sixth flow channel is provided on the sixth surface, the pressure relief valve is fixed to the sixth surface via the pressure relief valve bracket, the pressure relief valve is communicated with the sixth flow channel, the sixth surface and the first surface are located on the same side of the base, the sixth surface and the first surface are located on different surfaces, and the sixth surface is parallel to the first surface.

[0020] Optionally, the hydrogen inlet assembly further includes a heater, which is fixed to the base through the filter, and an outlet of the heater is connected to an inlet of the filter.

[0021] Optionally, the first flow channel, the third flow channel and the sixth flow channel are all parallel.

[0022] The present invention also provides a hydrogen intake system, comprising any one of the above-mentioned hydrogen intake assemblies.

[0023] The advantages of the hydrogen inlet assembly of the present invention are as follows:

[0024] The hydrogen inlet assembly of the present invention can be applied to the hydrogen inlet system and then to the fuel cell. When the hydrogen inlet assembly is applied, the new hydrogen output from the hydrogen bottle of the hydrogen inlet system enters the filter and enters the first flow channel of the support through the outlet of the filter. Since the first flow channel is connected to the second flow channel, the new hydrogen entering the first flow channel can flow from the first flow channel to the second flow channel; since the second flow channel is connected to the third flow channel, the new hydrogen entering the second flow channel can enter the third flow channel, and then enter the ejector from the third flow channel through the inlet of the ejector, flow out from the outlet of the ejector, and flow to the fuel cell stack. Part of the first flow regulating valve extends into the second flow channel, which can adjust the flow of new hydrogen passing through the second flow channel, so that the amount of new hydrogen meets the needs of the hydrogen inlet system and the fuel cell.

[0025] Since the filter, the first flow regulating valve and the ejector in the hydrogen inlet assembly of the present invention are all fixed on the support, a modular design of the hydrogen inlet assembly is achieved, and there is no need to set a support for each component in the filter, the first flow regulating valve and the ejector. As a result, the number of supports can be reduced, thereby simplifying the structure of the hydrogen inlet assembly. In addition, the new hydrogen entering the filter can pass through the first flow channel, the second flow channel and be regulated by the first flow regulating valve, and then enter the ejector through the third flow channel and flow from the outlet of the ejector to the fuel cell stack. The new hydrogen has a low flow resistance when passing through the first flow channel, the second flow channel and the third flow channel, that is, the present invention can reduce the flow resistance. Moreover, in the present invention, there is no need to set a pipeline connecting the filter and the first flow regulating valve, as well as a pipeline between the first flow regulating valve and the ejector, on the outside of the support. This can reduce the number of parts and the difficulty of assembly, and can also reduce the risk of leakage between the sealing surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the hydrogen inlet assembly according to an embodiment of the present invention from a first viewing angle;

[0027] Figure 2 yes Figure 1 The schematic diagram of the structure of the hydrogen inlet assembly shown in the second viewing angle;

[0028] Figure 3 yes Figure 1 The schematic diagram of the structure of the hydrogen inlet assembly shown in the third perspective;

[0029] Figure 4 This is a schematic diagram of the structure of the hydrogen inlet assembly according to an embodiment of the present invention;

[0030] Figure 5 yes Figure 1 In the embodiment shown, a schematic diagram of the structure of the base at a first viewing angle;

[0031] Figure 6 yes Figure 5 The schematic diagram of the structure of the base shown in the second viewing angle;

[0032] Figure 7 for Figure 5 A cross-sectional view of the base is shown.

[0033] The reference numerals are as follows: 100 - hydrogen inlet assembly; 10 - base; 11 - first flow channel; 12 - second flow channel; 13 - third flow channel; 14 - fourth flow channel; 15 - fifth flow channel; 16 - sixth flow channel; 17 - seventh flow channel; 18 - eighth flow channel; 19 - ninth flow channel; 101 - first surface; 102 - second surface; 103 - third surface; 104 - fourth surface; 105 - fifth surface; 106 - sixth surface; 20 - filter; 30 - first flow regulating valve; 40 - ejector; 5 0- ejector connector; 60- second flow regulating valve; 70- flow regulating valve connector; 80- shut-off valve; 90- pressure relief valve; 110- pressure relief valve bracket; 120- heater; 130- first heater bracket; 131- first sub-bracket; 1311- first bottom plate; 1312- first side plate; 1313- first reinforcement plate; 132- second sub-bracket; 140- second heater bracket; 1402- second side plate; 1403- second reinforcement plate; 150- pressure sensor; 200- hydrogen bottle. DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] In the prior art, each of the components of the hydrogen inlet assembly, such as the heater, filter, shut-off valve, proportional valve and ejector, is connected to a corresponding base. During assembly, each component is connected to its corresponding base, and then the bases of all the components are fixedly connected to complete the assembly of the hydrogen inlet assembly. Since the pressure of the new hydrogen flowing through the components in the hydrogen inlet assembly is relatively high, the components need to be connected by ferrules, which makes the hydrogen inlet assembly overly complicated and bloated, and does not utilize systematic maintenance.

[0037] Based on this, Figure 1As shown, the embodiment of the present invention provides a hydrogen inlet assembly 100, comprising: a base 10, a filter 20, a first flow regulating valve 30 and an ejector 40. Figure 5 As shown, the interior of the base 10 is provided with a first flow channel 11, a second flow channel 12 and a third flow channel 13 which are connected in sequence; the filter 20 is fixed on the base 10, and the outlet of the filter 20 is connected to the first flow channel 11; the first flow regulating valve 30 is fixed on the base 10, and part of the first flow regulating valve 30 extends into the second flow channel 12, and the first flow regulating valve 30 is used to adjust the fluid flow passing through the second flow channel 12; the ejector 40 is fixed on the base 10, and the inlet of the ejector 40 is connected to the third flow channel 13.

[0038] The hydrogen inlet assembly 100 of the embodiment of the present invention can be applied to the hydrogen inlet system and then to the fuel cell. When the hydrogen inlet assembly 100 is applied, the new hydrogen output from the hydrogen bottle 200 of the hydrogen inlet system enters the filter 20 and enters the first flow channel 11 of the support through the outlet of the filter 20. Since the first flow channel 11 is connected to the second flow channel 12, the new hydrogen entering the first flow channel 11 can flow from the first flow channel 11 to the second flow channel 12; since the second flow channel 12 is connected to the third flow channel 13, the new hydrogen entering the second flow channel 12 can enter the third flow channel 13, and then enter the ejector 40 from the third flow channel 13 through the inlet of the ejector 40, flow out from the outlet of the ejector 40, and flow to the fuel cell stack. Part of the first flow regulating valve 30 extends into the second flow channel 12, which can adjust the flow of new hydrogen passing through the second flow channel 12, so that the amount of new hydrogen meets the needs of the hydrogen inlet system and the fuel cell.

[0039] Because the filter 20, first flow regulating valve 30, and ejector 40 in the hydrogen intake assembly 100 of the embodiment of the present invention are all fixed to a support, a modular design of the hydrogen intake assembly 100 is achieved, eliminating the need to provide a separate support for each component of the filter 20, first flow regulating valve 30, and ejector 40. This reduces the number of supports and simplifies the structure of the hydrogen intake assembly 100. Furthermore, the new hydrogen entering the filter 20 can pass through the first flow channel 11, the second flow channel 12, and be regulated by the first flow regulating valve 30, and then enter the ejector 40 through the third flow channel 13 and flow from the outlet of the ejector 40 to the fuel cell stack. The new hydrogen has a low flow resistance when passing through the first flow channel 11, the second flow channel 12, and the third flow channel 13. That is, the embodiment of the present invention can reduce the flow resistance. Moreover, in the embodiment of the present invention, there is no need to set a pipe connecting the filter 20 and the first flow regulating valve 30, as well as a pipe connecting the first flow regulating valve 30 and the ejector 40 on the outside of the support, thereby reducing the number of parts and the difficulty of assembly, and reducing the risk of leakage between the sealing surfaces.

[0040] like Figure 1As shown, in an embodiment of the present invention, the hydrogen inlet assembly 100 may further include an ejector joint 50, through which the ejector 40 is fixed to the base 10. The ejector joint 50 includes three ports, which are interconnected, wherein the first port faces the third surface 103 of the support and is connected to the third flow channel 13; the orientation of the second port is perpendicular to the orientation of the first port, and the second port is connected to the inlet of the ejector 40; the orientation of the third port is perpendicular to the orientation of the first port, and the third port is used to connect a pump. The orientation of the second port is perpendicular to the orientation of the third port. Since the orientations of the first port, the second port, and the third port are perpendicular to each other, the support, the ejector 40, and the pump can be located in three different directions of the ejector joint 50, thereby reducing the situation where the dimensions of the three are too large on the same surface and the structure is not compact enough due to being located on the same surface. In other words, the embodiment of the present application makes the structure of the hydrogen inlet assembly 100 more compact.

[0041] Alternatively, as Figure 5 As shown, the base 10 has a first surface 101 for securing the filter 20, a second surface 102 for securing the first flow control valve 30, and a third surface 103 for securing the ejector 40. The first flow channel 11 is provided on the first surface 101, the second flow channel 12 is provided on the second surface 102, and the third flow channel 13 is provided on the third surface 103. The extension lines of the first surface 101 and the second surface 102 each form an angle with the extension line of the third surface 103. Thus, the first surface 101 and the third surface 103 are not located on the same plane. Since the filter 20 is secured to the first surface 101 and the ejector 40 is secured to the third surface 103, the filter 20 and the ejector 40 can be secured to different surfaces on the base 10. This reduces the installation space shortage that would result from securing the filter 20 and the ejector 40 on the same plane, thereby allowing the filter 20 and the ejector 40 to be better integrated with the base 10. Similarly, this also allows the first flow control valve 30 and the ejector 40 to be better integrated with the base 10.

[0042] Alternatively, as Figure 5As shown, the first surface 101 and the third surface 103 are located on the same side of the base 10, the first surface 101 and the third surface 103 are located on different surfaces, and the first surface 101 and the third surface 103 are parallel. In this way, the first surface 101 and the third surface 103 are arranged in a front-to-back staggered manner on the same side of the base 10. Since the filter 20 fixed to the first surface 101 and the flow guider fixed to the third surface 103 both occupy a certain amount of space, when the first surface 101 and the third surface 103 are arranged in a front-to-back staggered manner, the filter 20 and the flow guider can be installed in a front-to-back staggered manner, thereby reducing the interference between the filter 20 and the flow guider. In addition, the space on the base 10 can be better utilized, thereby further making the structure of the hydrogen inlet assembly 100 more compact.

[0043] like Figure 5 As shown, in this embodiment of the present invention, the first surface 101 and the second surface 102 are perpendicular to each other, and the third surface 103 and the second surface 102 are also perpendicular to each other. Therefore, when the second surface 102 is the side of the base 10, the first surface 101 and the third surface 103 can be considered as the front or back of the base 10. Therefore, the first flow regulating valve 30 is located on the side of the base 10, and the filter 20 and the ejector 40 are both located at the front or back of the base 10. This allows the first flow regulating valve 30, the filter 20, and the ejector 40 to be located on different surfaces of the base 10, thereby improving the space utilization outside the base 10.

[0044] Alternatively, as Figure 1 As shown, the hydrogen inlet assembly 100 further includes a second flow regulating valve 60 fixed on the base 10; Figure 6 and Figure 7 As shown, the base 10 further includes a fourth flow channel 14 and a sixth flow channel 16. The fourth flow channel 14 communicates with the second flow channel 12, and the sixth flow channel 16 communicates with the fourth flow channel 14. A portion of the second flow regulating valve 60 extends into the fourth flow channel 14 and is located between the fourth flow channel 14 and the sixth flow channel 16. The second flow regulating valve 60 is used to regulate the flow of fluid passing through the sixth flow channel 16. When the hydrogen inlet assembly 100 is in use, new hydrogen output from the hydrogen bottle 200 of the hydrogen inlet system enters the filter 20 and enters the first flow channel 11 of the support through the outlet of the filter 20. The new hydrogen entering the first flow channel 11 is divided into two branches. The new hydrogen in the first branch flows to the second flow channel 12. The new hydrogen entering the second flow channel 12 can enter the third flow channel 13 after passing through the first flow regulating valve 30. Then, the new hydrogen enters the ejector 40 from the third flow channel 13 through the inlet of the ejector 40, flows out from the outlet of the ejector 40, and flows to the fuel cell stack. The new hydrogen in the second branch flows to the fourth flow channel 14 , and then flows into the sixth flow channel 16 after passing through the second flow regulating valve 60 , and then flows out of the sixth flow channel 16 and flows to the fuel cell stack.

[0045] Fuel cells can be used in vehicles. When the power of the entire vehicle is relatively small, the hydrogen supply demand is relatively small. The first branch can be opened and the second branch can be closed, that is, the first flow regulating valve 30 can be opened and the second flow regulating valve 60 can be closed. Only the first branch can be used to supply hydrogen, which can meet the smaller hydrogen supply demand and the smaller power demand; when the power of the entire vehicle is relatively large, the hydrogen supply demand is relatively large. The first branch can be opened while the second branch can be opened, that is, the first flow regulating valve 30 and the second flow regulating valve 60 can be opened. The first branch and the second branch can be used together to supply hydrogen, which can meet the larger hydrogen supply demand and the larger power demand.

[0046] The embodiment of the present application can choose whether to supply hydrogen from the first branch or from the first branch and the second branch together according to the actual power size, thereby enabling the hydrogen supply system to meet both smaller power requirements and larger power requirements, thereby covering the full power range of the vehicle.

[0047] In the embodiment of the present invention, Figure 4 As shown, the first flow regulating valve 30 and the second flow regulating valve 60 can both be proportional valves.

[0048] like Figure 3 As shown, the hydrogen inlet assembly 100 also includes a flow control valve connector 70, through which the second flow control valve 60 is fixed to the fourth surface 104. The flow control valve connector 70 has three interconnected ports: a first port facing the fourth surface 104 and communicating with the fourth flow channel 14; a second port facing the second flow control valve 60 and communicating with the interface of the second flow control valve 60; and a third port for connecting to the fuel cell stack.

[0049] Alternatively, as Figure 7As shown, the base 10 further has a fourth surface 104 opposite the second surface 102. The fourth flow channel 14 is provided on the fourth surface 104. The centerline of the fourth flow channel 14 coincides with the centerline of the second flow channel 12. The second flow regulating valve 60 is fixed to the fourth surface 104. Since the first flow regulating valve 30 is fixed to the second surface 102 and the second flow regulating valve 60 is fixed to the fourth surface 104, the first flow regulating valve 30 and the second flow regulating valve 60 are respectively fixed to the sides of the base 10. In this way, new hydrogen entering from the filter 20 located at the front or rear of the base 10, after entering the first flow channel 11, can flow to the second flow channel 12 and the second flow channel 12 on both sides, respectively, and then flow to the first flow regulating valve 30 and the second flow regulating valve 60 located on both sides of the base 10. This can better utilize the space outside the base 10, thereby improving the space utilization rate outside the base 10. In addition, since the center lines of the second flow channel 12 and the fourth flow channel 14 coincide with each other, when the cross-sectional shapes of the second flow channel 12 and the fourth flow channel 14 are both circular and have the same diameter, the flow resistance of the new hydrogen flowing in the second flow channel 12 and the fourth flow channel 14 can be reduced.

[0050] Alternatively, as Figure 2 As shown, the hydrogen inlet assembly 100 further includes a shutoff valve 80. The base 10 has a fifth surface 105, which is located between the second surface 102 and the fourth surface 104. A fifth flow channel 15 connected to the second flow channel 12 is provided on the fifth surface 105. The shutoff valve 80 is fixed to the fifth surface 105, and a portion of the shutoff valve 80 extends into the fifth flow channel 15 and is located within the second flow channel 12 and / or the fourth flow channel 14. The shutoff valve 80 is used to regulate the flow of fluid passing through the second flow channel 12 and / or the fourth flow channel 14. The fifth surface 105 can be the top surface of the base 10. In this way, the fifth surface 105 where the shutoff valve 80 is located is not located on the same surface as the second surface 102 where the first flow control valve 30 is located, the fourth surface 104 where the second flow control valve 60 is located, or the first surface 101 where the filter 20 is located. This effectively utilizes the space above the base 10, further making the structure of the hydrogen inlet assembly 100 more compact.

[0051] Alternatively, as Figure 1As shown, hydrogen inlet assembly 100 also includes a pressure relief valve 90 and a pressure relief valve bracket 110. Base 10 also includes a sixth surface 106, on which sixth flow channel 16 is located. Pressure relief valve 90 is fixed to sixth surface 106 via pressure relief valve bracket 110, and pressure relief valve 90 communicates with sixth flow channel 16. Sixth surface 106 and first surface 101 are located on the same side of base 10, but are located on different surfaces from first surface 101, and are parallel to first surface 101. Pressure relief valve 90 is used to release pressure in the pipeline and discharge new hydrogen to the outside of the vehicle in the event of valve failure, thereby protecting the fuel cell stack and preventing damage to the fuel cell stack under high pressure. In addition, the first surface 101 and the sixth surface 106 are staggered front to back on the same side of the base 10. Since the filter 20 fixed to the first surface 101 and the pressure relief valve 90 support and the pressure relief valve 90 fixed to the sixth surface 106 all occupy a certain space, when the first surface 101 and the sixth surface 106 are staggered front to back, the filter 20 and the pressure relief valve 90 support can be installed staggered front to back, thereby reducing the interference of components between the filter 20 and the pressure relief valve 90 support. In addition, the space on the base 10 can be better utilized, thereby further making the structure of the hydrogen inlet assembly 100 more compact.

[0052] Alternatively, as Figure 1 As shown, the hydrogen inlet assembly 100 also includes a heater 120, which is fixed to the base 10 through the filter 20, and the outlet of the heater 120 is connected to the inlet of the filter 20. In this way, the new hydrogen output from the hydrogen bottle 200 of the hydrogen inlet system first enters the heater 120, enters the filter 20 after being heated, and then enters the first flow channel 11 of the base 10. Since the high-pressure new hydrogen output from the hydrogen bottle 200 will cause the new hydrogen temperature to be too low during the pressure release process, the new hydrogen with too low a temperature will produce a large amount of liquid water after mixing with the unreacted high-temperature circulating gas in the fuel cell stack. After the liquid water enters the fuel cell stack, it will affect the performance of the fuel cell stack or cause damage to the fuel cell stack. Therefore, the heater 120 can heat the high-pressure new hydrogen output from the hydrogen bottle 200, thereby better protecting the fuel cell stack.

[0053] like Figure 1As shown, the hydrogen inlet assembly 100 also includes a first heater bracket 130 and a second heater bracket 140. The heater 120 is further fixed to the base 10 via the first and second heater brackets 130, 140. The first heater bracket 130 includes a first sub-bracket 131 and a second sub-bracket 132. The first sub-bracket 131 includes a bottom plate, a first side plate 1312 fixed to the surface of the first bottom plate 1311, and a first reinforcing plate 1313 fixed between the first bottom plate 1311 and the first side plate 1312. The second sub-bracket 132 is a Z-shaped bracket. The side plates of the first sub-bracket 131 are fixed to the heater 120, the bottom plate of the first sub-bracket 131 is fixed to the second sub-bracket 132, and the second sub-bracket 132 is fixed to the ejector joint 50. The second heater bracket 140 includes a second bottom plate, a second side plate 1402 fixed to the surface of the second bottom plate, and a second reinforcing plate 1403 fixed between the second bottom plate and the second side plate 1402. The second bottom plate is fixed to the heater 120, and the second side plate 1402 is fixed to the pressure relief valve bracket 110. Since the ejector connector 50 and the pressure relief valve 90 are fixed to the base 10, the heater 120 is thus fixed to the base 10. Due to the relatively large size of the heater 120, the first heater bracket 130 and the second heater 120 are used to fix them separately. This improves the strength of the fixing structure of the heater 120 on the base 10 and reduces the risk of damage caused by insufficient or weak fixing components on the base 10.

[0054] Alternatively, as Figure 7 As shown, the first flow channel 11, the third flow channel 13 and the sixth flow channel 16 are all parallel. In this way, the first flow channel 11, the third flow channel 13 and the sixth flow channel 16 on the base 10 are easily processed.

[0055] like Figure 7 As shown, in this embodiment of the present invention, the base 10 further includes an eighth flow channel 18 and a ninth flow channel 19, wherein the eighth flow channel 18 is located between the second flow channel 12 and the third flow channel 13, and the cross-sectional area of ​​the eighth flow channel 18 is smaller than the cross-sectional areas of the second flow channel 12 and the third flow channel 13. Since the first flow regulating valve 30 can control the flow of new hydrogen passing through the second flow channel 12, when the cross-sectional area of ​​the eighth flow channel 18 is smaller, it is easier to achieve a sealed connection between the first flow regulating valve 30 and the eighth flow channel 18. Similarly, the ninth flow channel 19 is located between the fourth flow channel 14 and the sixth flow channel 16, and the fourth flow channel 14 and the sixth flow channel 16 have the same cross-sectional area. The cross-sectional area of ​​the ninth flow channel 19 is smaller than the cross-sectional area of ​​the fourth flow channel 14 and the sixth flow channel 16, thereby also facilitating a sealed connection between the second flow regulating valve 60 and the ninth flow channel 19.

[0056] Alternatively, as Figure 3As shown, the hydrogen inlet assembly 100 also includes two pressure sensors 150. Two seventh flow channels 17 are also provided on the base 10. Both seventh flow channels 17 are located on the fifth surface 105. One of the seventh flow channels 17 communicates with the second flow channel 12, and the other communicates with the fourth flow channel 14. The two pressure sensors 150 are fixed to the fifth surface 105. The detection end of one pressure sensor 150 is located in one of the seventh flow channels 17, and the detection end of the other pressure sensor 150 is located in the other seventh flow channel 17. In this way, the two pressure sensors 150 can respectively detect the new hydrogen pressure in the second flow channel 12 and the fourth flow channel 14.

[0057] An embodiment of the present invention further provides a hydrogen intake system, comprising any of the above-mentioned hydrogen intake assemblies 100 and a pump.

[0058] The embodiments of the present invention are described by means of several specific embodiments. It should be understood by those skilled in the art that various modifications and equivalent substitutions may be made to the present invention without departing from the scope of the present invention. In addition, various modifications may be made to the present invention for specific situations or specific circumstances without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of the present invention.

Claims

1. A hydrogen inlet assembly, characterized in that: include: A base, wherein a first flow channel, a second flow channel, and a third flow channel are provided in the interior of the base and are connected in sequence; a filter, the filter being fixed on the base, the outlet of the filter being in communication with the first flow channel; a first flow regulating valve, the first flow regulating valve being fixed to the base, a portion of the first flow regulating valve extending into the second flow channel, the first flow regulating valve being used to regulate a flow of a fluid passing through the second flow channel; an ejector, the ejector being fixed on the base, the inlet of the ejector being connected to the third flow channel; The hydrogen inlet assembly further includes a second flow regulating valve fixed on the base; The base also includes a fourth flow channel and a sixth flow channel, the fourth flow channel is connected to the second flow channel, the sixth flow channel is connected to the fourth flow channel, a portion of the second flow regulating valve extends into the fourth flow channel and is located between the fourth flow channel and the sixth flow channel, and the second flow regulating valve is used to adjust the fluid flow passing through the sixth flow channel.

2. The hydrogen inlet assembly according to claim 1, characterized in that: The base has a first surface for fixing the filter, a second surface for fixing the first flow regulating valve, and a third surface for fixing the ejector. The first flow channel is arranged on the first surface, the second flow channel is arranged on the second surface, and the third flow channel is arranged on the third surface. The extension line of the first surface and the extension line of the second surface respectively have an angle with the extension line of the third surface.

3. The hydrogen inlet assembly according to claim 2, characterized in that: The first surface and the third surface are located on the same side of the base, the first surface and the third surface are located on different surfaces, and the first surface and the third surface are parallel.

4. The hydrogen inlet assembly according to claim 2, characterized in that: The base further has a fourth surface opposite to the second surface. The fourth flow channel is provided on the fourth surface. The center line of the fourth flow channel coincides with the center line of the second flow channel. The second flow regulating valve is fixed on the fourth surface.

5. The hydrogen inlet assembly according to claim 4, characterized in that: The hydrogen inlet assembly also includes a shut-off valve; the base has a fifth surface, the fifth surface is located between the second surface and the fourth surface, and a fifth flow channel connected to the second flow channel is provided on the fifth surface. The shut-off valve is fixed to the fifth surface, and a portion of the shut-off valve extends into the fifth flow channel and is located in the second flow channel and / or the fourth flow channel. The shut-off valve is used to regulate the flow of fluid passing through the second flow channel and / or the fourth flow channel.

6. The hydrogen inlet assembly according to claim 2, characterized in that: The hydrogen inlet assembly also includes a pressure relief valve and a pressure relief valve bracket; the base also includes a sixth surface, the sixth flow channel is provided on the sixth surface, the pressure relief valve is fixed to the sixth surface through the pressure relief valve bracket, the pressure relief valve is communicated with the sixth flow channel, the sixth surface and the first surface are located on the same side of the base, the sixth surface and the first surface are located on different surfaces, and the sixth surface is parallel to the first surface.

7. The hydrogen inlet assembly according to any one of claims 1 to 4, characterized in that: The hydrogen inlet assembly further includes a heater, which is fixed to the base through the filter, and an outlet of the heater is connected to an inlet of the filter.

8. The hydrogen inlet assembly according to claim 1, characterized in that: The first flow channel, the third flow channel, and the sixth flow channel are all parallel.

9. A hydrogen supply system, characterized in that: Comprising the hydrogen inlet assembly according to any one of claims 1-8.

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