CN216773289U - Hydrogen supply and return device for fuel cell and fuel cell system thereof - Google Patents
Hydrogen supply and return device for fuel cell and fuel cell system thereof Download PDFInfo
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- CN216773289U CN216773289U CN202220222118.9U CN202220222118U CN216773289U CN 216773289 U CN216773289 U CN 216773289U CN 202220222118 U CN202220222118 U CN 202220222118U CN 216773289 U CN216773289 U CN 216773289U
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Abstract
The utility model discloses a hydrogen supply and return device of a fuel cell and a fuel cell system thereof, which are characterized in that: including the proportional valve, the high pressure joint, nozzle assembly and base, be provided with high-pressure hydrogen entry on the base, hydrogen air feed export, return hydrogen entry and a plurality of connecting line, the high pressure joint is installed at high-pressure hydrogen entry, nozzle assembly's entry end sets up in hydrogen air feed export, nozzle assembly's exit end output is galvanic pile module supply hydrogen, the proportional valve is installed on the top of base, the input of proportional valve utilizes connecting line and high-pressure hydrogen entry intercommunication, the output of proportional valve utilizes connecting line and nozzle assembly's entry end intercommunication, the structure is with the proportional valve, the high pressure joint, nozzle assembly and base structure integration are on the base, the integrated level is high, compact structure, and the assembly precision is high, the product uniformity is good, high reliability.
Description
The technical field is as follows:
the utility model relates to a hydrogen supply and return device of a fuel cell and a fuel cell system thereof.
Background art:
with the continuous increase of national economy of China and the continuous improvement of the living standard of people, automobiles become a necessary tool for people to go out, with the increase of haze of a plurality of cities in China, people are made to be aware of the fact that the development of new energy is unsmooth, new energy automobiles are regarded as an important link of energy transformation, and proton exchange membrane fuel cell automobiles are regarded as the most mature representatives of the electric quantity production of the new energy automobiles at present. The hydrogen and oxygen in the air are subjected to chemical reaction to generate electric energy, so that the automobile is pushed to move forward, and the hydrogen-oxygen hybrid vehicle has a series of advantages of simple structure, no pollution to the atmosphere, energy conservation, high efficiency and the like. The fuel cell automobile does not generate carbon dioxide basically, and as a new-generation new energy automobile, the system optimization and the design and development of key parts can prolong the service life of a fuel cell power system.
In the existing fuel cell system, a hydrogen circulation system is an important unit of a fuel cell power module, and is used for conveying hydrogen to a fuel cell stack and purifying and recycling hydrogen tail gas. The hydrogen circulation usually adopts the hydrogen circulating pump to provide power, and the hydrogen circulating pump is bulky, and the consumption is also great, is very unfavorable for fuel cell system power density's improvement. The electrically driven pump has the advantages of complex structure, high cost, high energy consumption, short service life and inconvenient maintenance. Part of hydrogen fuel cell systems also adopt an ejector as a hydrogen circulating device, the ejector does not need to additionally increase power consumption, but the product structure assembly error is large, so that the product consistency is insufficient; in addition, the system is in failure due to the lack of filtration of hydrogen, impurities mixed into the galvanic pile and the like.
The utility model content is as follows:
the utility model aims to provide a hydrogen supply and return device of a fuel cell and a fuel cell system thereof, which can solve the technical problems of insufficient product consistency and incompact structure caused by large assembly error of an ejector product structure by adopting the ejector as a hydrogen circulating device in the prior art.
The purpose of the utility model is realized by the following technical scheme.
The utility model aims to provide a hydrogen supply and return device of a fuel cell, which is characterized in that: including the proportional valve, the high pressure connects, nozzle assembly and base, be provided with high-pressure hydrogen entry on the base, hydrogen air feed export, return hydrogen entry and a plurality of connecting line, the high pressure connects and installs at high-pressure hydrogen entry, nozzle assembly's entry end sets up in hydrogen air feed export, nozzle assembly's exit end output is pile module supply hydrogen, the proportional valve is installed on the top of base, the input of proportional valve utilizes connecting line and high-pressure hydrogen entry intercommunication, the output of proportional valve utilizes connecting line and nozzle assembly's entry end intercommunication.
The nozzle assembly comprises a nozzle and a mixing diffuser pipe;
one end of the mixed diffuser pipe protrudes out of the annular boss, the side wall of the annular boss is provided with a plurality of gaps which are used as inlets of fluid to be guided, the annular boss is embedded into a hydrogen supply outlet of the base, a hydrogen return inlet of the base is communicated with the mixed diffuser pipe through the plurality of gaps of the annular boss, and a mixed section flow passage and an expansion section flow passage are arranged in the mixed diffuser pipe;
the nozzle is sleeved at the end part of the annular boss, the first flow channel is arranged in the middle of the nozzle and serves as a hydrogen fluid channel, a hydrogen fluid inlet is arranged at one end of the nozzle and serves as an inlet end of the nozzle assembly, a high-pressure jet orifice is arranged at the other end of the nozzle, the high-pressure fluid which is jetted out from the high-pressure jet orifice and does work is mixed with the fluid to be guided flowing into the gap in the mixing section flow channel, and the fluid to be guided is jetted out after passing through the expanding section flow channel.
The outer side face of the mixed diffusion pipe is provided with the mounting flange, the mounting flange is provided with a plurality of first mounting holes, the base is provided with a plurality of second mounting holes corresponding to the first mounting holes, the first mounting holes and the second mounting holes are screwed in through screws, and the mixed diffusion pipe is fixed on the base.
The aforesaid still include hydrogen filter element group spare, hydrogen filter element group spare is installed in the high-pressure hydrogen inlet, and when high pressure joint was installed at the high-pressure hydrogen inlet, high pressure joint compressed tightly hydrogen filter element group spare is fixed in the high-pressure hydrogen inlet.
The hydrogen filter element group spare include filter core, ring carrier and fixing base, and ring carrier and fixing base are installed respectively at the both ends of filter core, and high pressure joint installs when high-pressure hydrogen enters the mouth, high pressure joint supports on the terminal surface of the fixing base of hydrogen filter element group spare.
The side wall of the annular bracket is provided with a plurality of through holes.
The terminal surface of fixing base on install rubber packing pad, when high-pressure joint installs at high-pressure hydrogen entry, high-pressure joint compresses tightly rubber packing pad.
The filter element is a sintered body.
A fuel cell system comprises a fuel cell system controller, an electric pile module and a hydrogen supply system, wherein the hydrogen supply system comprises a hydrogen source, a stop valve, a pressure reducing valve and a fuel cell hydrogen supply and return device, and is characterized in that: the fuel cell hydrogen supply and return device is characterized in that a high-pressure connector of the fuel cell hydrogen supply and return device is connected with a hydrogen source, hydrogen of the hydrogen source enters the fuel cell hydrogen supply and return device from the high-pressure connector through a stop valve and a pressure reducing valve, an outlet end of a nozzle assembly in the fuel cell hydrogen supply and return device is connected with a hydrogen inlet of the electric pile module, and a return inlet of a base in the fuel cell hydrogen supply and return device is connected with a hydrogen outlet of the electric pile module.
A water-steam separator is arranged between the hydrogen return inlet of the base and the hydrogen outlet of the electric pile module, the mixed gas discharged from the hydrogen outlet of the electric pile module is processed by the water-steam separator, the separated gas enters the hydrogen return inlet of the base, then is output to the outlet end of the nozzle component in the hydrogen supply and return device of the fuel cell to be discharged, and then enters the electric pile module to react, and the separated liquid water is discharged from the water outlet of the water-steam separator.
Compared with the prior art, the utility model has the following effects:
1) a fuel cell hydrogen supply and return device is characterized in that: including the proportional valve, the high pressure joint, nozzle assembly and base, be provided with high-pressure hydrogen entry on the base, hydrogen air feed export, return hydrogen entry and a plurality of connecting line, the high pressure joint is installed at high-pressure hydrogen entry, nozzle assembly's entry end sets up in hydrogen air feed export, nozzle assembly's exit end output is galvanic pile module supply hydrogen, the proportional valve is installed on the top of base, the input of proportional valve utilizes connecting line and high-pressure hydrogen entry intercommunication, the output of proportional valve utilizes connecting line and nozzle assembly's entry end intercommunication, the structure is with the proportional valve, the high pressure joint, nozzle assembly and base structure integration are on the base, the integrated level is high, compact structure, and the assembly precision is high, the product uniformity is good, high reliability.
2) Other advantages of the present invention are described in detail in the examples section.
Description of the drawings:
FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is another perspective view of the first embodiment of the present invention;
FIG. 3 is an exploded view of a first embodiment of the present invention;
FIG. 4 is an exploded perspective view of another embodiment of the present invention;
FIG. 5 is a front view of a first embodiment of the present invention;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
FIG. 7 is a schematic flow diagram of a hydrogen gas stream provided in accordance with one embodiment of the present invention;
FIG. 8 is a perspective view of a nozzle assembly provided in accordance with one embodiment of the present invention;
FIG. 9 is an exploded view of a nozzle assembly provided in accordance with one embodiment of the present invention;
FIG. 10 is an elevation view of a nozzle assembly provided in accordance with an embodiment of the present invention;
FIG. 11 is a cross-sectional view B-B of FIG. 10;
FIG. 12 is a perspective view of a hydrogen filter assembly according to one embodiment of the present invention;
FIG. 13 is an elevation view of a hydrogen filter cartridge assembly according to one embodiment of the present invention;
FIG. 14 is a cross-sectional view C-C of FIG. 13;
fig. 15 is a schematic diagram of the second embodiment of the present invention.
Fig. 16 is a control schematic diagram of a fuel cell system controller according to a second embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to fig. 14, the present embodiment provides a hydrogen supply and return device for a fuel cell, which is characterized in that: including proportional valve 1, high pressure joint 2, nozzle assembly 3 and base 4, be provided with high-pressure hydrogen entry 41 on the base 4, hydrogen air feed export 42, return hydrogen entry 43 and a plurality of connecting line 44, high pressure joint 2 installs at high-pressure hydrogen entry 41, the entry end 31 of nozzle assembly 3 sets up in hydrogen air feed export 42, the exit end 32 output of nozzle assembly 3 supplies hydrogen for pile module 100, proportional valve 1 installs on the top of base 4, proportional valve 1's input utilizes connecting line 44 to communicate with high-pressure hydrogen entry 41, proportional valve 1's output utilizes connecting line 44 to communicate with nozzle assembly 3's entry end 31, this structure is with the proportional valve, high pressure joint, nozzle assembly and base structure integration are on the base, the integrated level is high, compact structure, and the assembly precision is high, the product uniformity is good, the reliability is high.
The nozzle assembly 3 includes a nozzle 33 and a mixing diffuser pipe 34; one end of the mixed diffuser pipe 34 protrudes out of the annular boss 341, the side wall of the annular boss 341 is provided with a plurality of notches 342 as inlets of the fluid to be guided, the annular boss 341 is embedded in the hydrogen supply outlet 42 of the base 4, the hydrogen return inlet 43 of the base 4 is communicated with the mixed diffuser pipe 34 through the plurality of notches 342 of the annular boss 341, and the mixed diffuser pipe 34 is internally provided with a mixed section flow passage 343 and an expansion section flow passage 344; the nozzle 33 is sleeved at the end of the annular boss 341, the nozzle 33 and the annular boss 341 are in interference fit, the first flow passage 331 is arranged in the middle of the nozzle 33 and serves as a hydrogen fluid passage, the hydrogen fluid inlet 332 is arranged at one end of the nozzle 33 and serves as the inlet end 31 of the nozzle assembly 3, the high-pressure injection port 333 is arranged at the other end of the nozzle 33, the working high-pressure fluid injected from the high-pressure injection port 333 is mixed with the guided fluid flowing into the gap 342 in the mixing section flow passage 343 and is injected out after passing through the expansion section flow passage 344, and the structure arrangement is reasonable and simple.
The mounting flange 345 is arranged on the outer side surface of the mixed diffuser pipe 34, the mounting flange 345 is provided with a plurality of first mounting holes 346, the base 4 is provided with a plurality of second mounting holes 45 corresponding to the first mounting holes 346, the first mounting holes 346 and the second mounting holes 45 are screwed in through the screws 340, the mixed diffuser pipe 34 is fixed on the base 4, and the mounting structure is simple.
Foretell still includes hydrogen filter element group spare 5, and hydrogen filter element group spare 5 is installed in high-pressure hydrogen entry 41, and high pressure joint 2 is installed when high-pressure hydrogen entry 41, and high pressure joint 2 is fixed with hydrogen filter element group spare 5 and is compressed tightly in high-pressure hydrogen entry 41, increases hydrogen filter element group spare 5 and effectively prevents that impurity from getting into the galvanic pile module, protects the galvanic pile module, and the reliability is high.
Foretell hydrogen filter element group spare 5 includes filter core 51, ring carrier 52 and fixing base 53, and ring carrier 52 and fixing base 53 are installed respectively at filter core 51's both ends, and high pressure connects 2 and installs when high-pressure hydrogen enters the mouth 41, and high pressure connects 2 to support on hydrogen filter element group spare 5's fixing base 53's terminal surface, simple structure.
The side wall of the annular bracket 52 is provided with a plurality of through holes 521 to improve the flow rate of the hydrogen.
The rubber sealing gasket 54 is arranged on the end face of the fixing seat 53, when the high-pressure joint 2 is arranged at the high-pressure hydrogen inlet 41, the rubber sealing gasket 54 is tightly pressed by the high-pressure joint 2, the sealing effect is good, and hydrogen gas is prevented from leaking between the fixing seat 53 and the high-pressure joint 2.
The filter element 51 is a sintered body.
Example two:
as shown in fig. 15 and 16, a fuel cell system includes a fuel cell system controller, a stack module, and a hydrogen supply system, where the hydrogen supply system includes a hydrogen source, a stop valve, a pressure reducing valve, and a fuel cell hydrogen supply and return device, and hydrogen output by the hydrogen source is provided by a high-pressure hydrogen tank, and the fuel cell system controller is characterized in that: the fuel cell hydrogen supply and return device is the fuel cell hydrogen supply and return device described in the first embodiment, a high-pressure connector 2 of the fuel cell hydrogen supply and return device is connected with a hydrogen source, hydrogen of the hydrogen source enters the fuel cell hydrogen supply and return device from the high-pressure connector 2 through a stop valve and a pressure reducing valve, an outlet end 32 of a nozzle assembly 3 in the fuel cell hydrogen supply and return device is connected with a hydrogen inlet of a stack module, and a return inlet 43 of a base 4 in the fuel cell hydrogen supply and return device is connected with a hydrogen outlet of the stack module. The fuel cell system further includes an air supply system and a cooling system, an output end of the air supply system is connected to an air inlet of the stack module to supply air to the stack module, and the cooling system is connected to a cooling fluid inlet and a cooling fluid outlet of the stack module, and therefore, the air supply system and the cooling system are not involved in the technical scheme, so that the air supply system and the cooling system are not shown in fig. 15.
A water-vapor separator is arranged between the hydrogen return inlet 43 of the base 4 and the hydrogen outlet of the electric pile module, the mixed gas discharged from the hydrogen outlet of the electric pile module is processed by the water-vapor separator, the separated gas enters the hydrogen return inlet of the base, then is output to the outlet end 32 of the nozzle component 3 in the hydrogen supply and return device of the fuel cell to be discharged, and then enters the electric pile module to react, and the separated liquid water is discharged from the water outlet of the water-vapor separator.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited thereto, and other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention are all equivalent substitutions and are intended to be included within the scope of the present invention.
Claims (10)
1. A fuel cell hydrogen supply and return device is characterized in that: the high-pressure hydrogen fuel cell comprises a proportional valve (1), a high-pressure connector (2), a nozzle assembly (3) and a base (4), wherein a high-pressure hydrogen inlet (41) is formed in the base (4), a hydrogen supply outlet (42), a hydrogen return inlet (43) and a plurality of connecting pipelines (44), the high-pressure connector (2) is installed at the high-pressure hydrogen inlet (41), an inlet end (31) of the nozzle assembly (3) is arranged in the hydrogen supply outlet (42), the outlet end (32) of the nozzle assembly (3) outputs hydrogen supplied to a galvanic pile module (100), the proportional valve (1) is installed on the top of the base (4), the input end of the proportional valve (1) is communicated with the high-pressure hydrogen inlet (41) through the connecting pipelines (44), and the output end of the proportional valve (1) is communicated with the inlet end (31) of the nozzle assembly (3) through the connecting pipelines (44).
2. A fuel cell hydrogen supply and return device according to claim 1, wherein: the nozzle assembly (3) comprises a nozzle (33) and a mixing diffuser pipe (34);
one end of the mixed diffuser pipe (34) protrudes out of the annular boss (341), the side wall of the annular boss (341) is provided with a plurality of notches (342) as inlets of drained fluids, the annular boss (341) is embedded into the hydrogen supply outlet (42) of the base (4), the hydrogen return inlet (43) of the base (4) is communicated with the mixed diffuser pipe (34) through the plurality of notches (342) of the annular boss (341), and a mixed section flow passage (343) and an expansion section flow passage (344) are arranged in the mixed diffuser pipe (34);
the nozzle (33) is sleeved at the end part of the annular boss (341), a first flow passage (331) is arranged in the middle of the nozzle (33) and serves as a hydrogen fluid passage, a hydrogen fluid inlet (332) is arranged at one end of the nozzle (33) and serves as an inlet end (31) of the nozzle assembly (3), a high-pressure injection port (333) is arranged at the other end of the nozzle (33), working high-pressure fluid injected from the high-pressure injection port (333) is mixed with guided fluid flowing into the gap (342) in the mixing section flow passage (343), and the guided fluid is injected out after passing through the expansion section flow passage (344).
3. A fuel cell hydrogen supply and return device according to claim 2, wherein: be equipped with mounting flange (345) on the lateral surface of mixed diffuser pipe (34), be equipped with a plurality of first mounting hole (346) on mounting flange (345), be equipped with a plurality of second mounting hole (45) that correspond with first mounting hole (346) on base (4), through screw (340) precession first mounting hole (346) and second mounting hole (45), will mix diffuser pipe (34) and fix on base (4).
4. A fuel cell hydrogen supply and return device according to claim 1, 2 or 3, wherein: still include hydrogen filter element group spare (5), install in high-pressure hydrogen entry (41) hydrogen filter element group spare (5), when high-pressure joint (2) were installed in high-pressure hydrogen entry (41), high-pressure joint (2) were fixed with hydrogen filter element group spare (5) and are compressed tightly in high-pressure hydrogen entry (41).
5. A fuel cell hydrogen supply and return device according to claim 4, wherein: hydrogen filter element group spare (5) are including filter core (51), ring carrier (52) and fixing base (53), and the both ends at filter core (51) are installed respectively in ring carrier (52) and fixing base (53), and when high pressure joint (2) were installed at high-pressure hydrogen entry (41), high pressure joint (2) supported on the terminal surface of fixing base (53) of hydrogen filter element group spare (5).
6. A fuel cell hydrogen supply and return device according to claim 5, wherein: the side wall of the annular bracket (52) is provided with a plurality of through holes (521).
7. A fuel cell hydrogen supply and return device according to claim 6, wherein: the end face of the fixed seat (53) is provided with a rubber sealing gasket (54), and when the high-pressure joint (2) is arranged at the high-pressure hydrogen inlet (41), the high-pressure joint (2) compresses the rubber sealing gasket (54).
8. A fuel cell hydrogen supply and return device according to claim 7, wherein: the filter element (51) is a sintered body.
9. A fuel cell system comprises a fuel cell system controller, an electric pile module and a hydrogen supply system, wherein the hydrogen supply system comprises a hydrogen source, a stop valve, a pressure reducing valve and a fuel cell hydrogen supply and return device, and is characterized in that: the fuel cell hydrogen supply and return device is as claimed in any one of the above claims 1 to 8, wherein the high-pressure connector (2) of the fuel cell hydrogen supply and return device is connected with a hydrogen source, hydrogen of the hydrogen source enters the fuel cell hydrogen supply and return device from the high-pressure connector (2) through a stop valve and a pressure reducing valve, the outlet end (32) of the nozzle assembly (3) of the fuel cell hydrogen supply and return device is connected with the hydrogen inlet of the stack module, and the return inlet (43) of the base (4) of the fuel cell hydrogen supply and return device is connected with the hydrogen outlet of the stack module.
10. A fuel cell system according to claim 9, wherein: a water-vapor separator is arranged between a hydrogen return inlet (43) of the base (4) and a hydrogen outlet of the pile module, mixed gas discharged from the hydrogen outlet of the pile module enters the hydrogen return inlet of the base after being treated and separated by the water-vapor separator, then is output to an outlet end (32) of a nozzle assembly (3) in the hydrogen supply and return device of the fuel cell for discharging, then enters the pile module for reaction, and separated liquid water is discharged from a water outlet of the water-vapor separator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220222118.9U CN216773289U (en) | 2022-01-27 | 2022-01-27 | Hydrogen supply and return device for fuel cell and fuel cell system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220222118.9U CN216773289U (en) | 2022-01-27 | 2022-01-27 | Hydrogen supply and return device for fuel cell and fuel cell system thereof |
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| CN216773289U true CN216773289U (en) | 2022-06-17 |
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| CN202220222118.9U Active CN216773289U (en) | 2022-01-27 | 2022-01-27 | Hydrogen supply and return device for fuel cell and fuel cell system thereof |
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| TR01 | Transfer of patent right |
Effective date of registration: 20221117 Address after: 5th Floor, Office Building, No. 1 Guangfeng Industrial Avenue, West District, Zhongshan City, Guangdong Province, 528400 Patentee after: Dayang electric fuel cell technology (Zhongshan) Co.,Ltd. Address before: 528400 No. 22, Xingwan Road, Cuiheng New District, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN BROAD-OCEAN MOTOR Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 528449 The front door of Dayang Motor, next to Industrial Avenue, Guangfeng Industrial Park, West District, Zhongshan City, Guangdong Province Patentee after: Zhongshan Hydrogen Forest Energy Technology Co.,Ltd. Address before: 5th Floor, Office Building, No. 1 Guangfeng Industrial Avenue, West District, Zhongshan City, Guangdong Province, 528400 Patentee before: Dayang electric fuel cell technology (Zhongshan) Co.,Ltd. |