CN210224185U - Fuel cell hydrogen supply system and fuel cell system applying same - Google Patents
Fuel cell hydrogen supply system and fuel cell system applying same Download PDFInfo
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- CN210224185U CN210224185U CN201921132697.2U CN201921132697U CN210224185U CN 210224185 U CN210224185 U CN 210224185U CN 201921132697 U CN201921132697 U CN 201921132697U CN 210224185 U CN210224185 U CN 210224185U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses a fuel cell hydrogen supply system and fuel cell system who uses thereof, fuel cell hydrogen supply system includes proportional valve, ejector, small-size hydrogen circulating pump, advance hydrogen mouth joint, hydrogen outlet joint and hydrogen return mouth joint and a plurality of connecting line, proportional valve one end utilizes connecting line and hydrogen inlet joint to be connected, the proportional valve other end utilizes connecting line and ejector's entry end to be connected, ejector's exit end utilizes connecting line to connect hydrogen outlet joint, utilize connecting line to connect small-size hydrogen circulating pump between hydrogen return mouth joint and the hydrogen outlet joint, hydrogen return mouth joint utilizes connecting line and ejector's drainage entry to be connected; the utility model discloses a single ejector + small-size hydrogen circulating pump's integration setting makes fuel cell advance hydrogen adjusting device and satisfies the different of low-power, high power simultaneously and draws and penetrate the requirement, advances hydrogen regulation and returns hydrogen regulation and go on simultaneously, makes to advance hydrogen regulation and hydrogen circulation function simple and reliable, and simple structure is reasonable, and application scope is wide.
Description
The technical field is as follows:
the utility model relates to a fuel cell hydrogen supply system and fuel cell system of using thereof.
Background art:
with the continuous increase of national economy and the continuous improvement of the living standard of people in China, automobiles become necessary tools for people to go out, with the increase of haze of a plurality of cities in China, people are made to realize 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 chemically reacted to generate electric energy, so that the automobile is driven to move forward. The fuel cell automobile does not generate carbon dioxide basically, and has a series of advantages of simple structure, no pollution to the atmosphere, energy conservation, high efficiency and the like as a new-generation new energy automobile. The optimization of the system and the design and development of key parts can prolong the service life of the fuel cell power system, the tail hydrogen discharge amount is less, and the tail hydrogen discharge amount can possibly harm the life health of people.
In the existing fuel cell system, most of hydrogen input of a fuel cell stack adopts a diaphragm type hydrogen circulating pump, and the diaphragm type hydrogen circulating pump can circulate residual gas of the fuel cell stack reaction to a stack gas inlet end. The pump is in an active pressurizing type, and is complex in structure, high in cost, high in energy consumption and inconvenient to maintain. And the ejector is adopted as a hydrogen circulating device for part of the hydrogen fuel cells, the ejector does not need to additionally increase power consumption, but the integration level is low, the application range is small, the production and manufacturing manufacturability is poor, and the using effect is not ideal.
The existing fuel cell system also has a structure adopting the combined control of a single ejector and a stop valve, but the structure is not ideal, has too simple function, cannot meet the requirements of high power and low power simultaneously, and has small application range.
The invention content is as follows:
the utility model aims at providing a fuel cell advances hydrogen adjusting device and fuel cell system of using thereof can solve current fuel cell and advance the hydrogen device and adopt single ejector to lead to can not be fit for high power and low-power demand simultaneously, problem that application scope is little.
The purpose of the utility model is realized by the following technical scheme.
A first object of the present invention is to provide a fuel cell hydrogen supply system, characterized in that: it includes the proportional valve, the ejector, small-size hydrogen circulating pump, advance the hydrogen mouth and connect, go out the hydrogen mouth and connect and a plurality of connecting line with returning the hydrogen mouth, proportional valve one end utilizes connecting line and advances hydrogen mouth articulate, the proportional valve other end utilizes the connecting line to be connected with the entry end of ejector, the exit end of ejector utilizes connecting line to connect out the hydrogen mouth and connects, return and utilize the connecting line to connect small-size hydrogen circulating pump between hydrogen mouth connects and the hydrogen mouth connects, it utilizes the drainage entry linkage of connecting line and ejector to return the hydrogen mouth to connect.
The outlet end of the ejector is connected with a pressure release valve.
The first pressure sensor is arranged between the proportional valve and the ejector, the second pressure sensor is arranged between the outlet end of the ejector and the hydrogen outlet joint, and the third pressure sensor is arranged between the small hydrogen circulating pump and the hydrogen return joint.
Foretell ejector is installed in the passageway that the glomeration inside was dug out, and the glomeration is equipped with high-pressure hydrogen entry, hydrogen air feed export and hydrogen circulation entry, it installs in high-pressure hydrogen entry to advance the hydrogen mouth joint, it installs in the hydrogen air feed export to go out the hydrogen mouth joint, it installs in hydrogen circulation entry to return the hydrogen mouth joint.
The hydrogen circulation inlet is communicated with the exhaust port by using an external connecting pipeline, the exhaust port is connected with the purging valve, and the external connecting pipeline and the exhaust port are positioned outside the collection block.
The proportional valve, the pressure release valve, the first pressure sensor and the second pressure sensor are arranged on the aggregate block.
The connecting pipelines are formed by digging channels in the blocks.
The bottom and one side of the block are respectively provided with a first heating plate and a second heating plate.
The small hydrogen circulating pump is arranged at the bottom of the collecting block and is positioned on one side of the first heating plate.
The bottom of the small hydrogen circulating pump is provided with a mounting foot.
A second object of the present invention is to provide a fuel cell system, which comprises a fuel cell system controller, a fuel cell stack and a fuel cell hydrogen supply system, and is characterized in that: the fuel cell hydrogen supply system is above-mentioned fuel cell hydrogen supply system, fuel cell hydrogen supply system includes proportional valve, ejector, small-size hydrogen circulating pump, advances hydrogen mouthful to connect, goes out the hydrogen mouthful and connects and return hydrogen mouthful and connect and a plurality of connecting line, it connects with the high-pressure hydrogen jar to advance hydrogen mouthful, goes out the hydrogen mouthful and connects the hydrogen entry linkage with the fuel cell pile, returns the hydrogen mouthful and connects the hydrogen exit linkage with the fuel cell pile, fuel cell system controller control proportional valve, small-size hydrogen circulating pump open or close.
The inlet end of the ejector is connected with the pressure release valve, the first pressure sensor is installed between the proportional valve and the ejector, the second pressure sensor is installed at the outlet end of the ejector and the hydrogen outlet joint, the third pressure sensor is installed at the small hydrogen circulating pump and the hydrogen return joint, and the first pressure sensor, the second pressure sensor and the third pressure sensor transmit hydrogen pipeline pressure signals of different parts to the fuel cell system controller.
Under the high-power output state of the fuel cell system, the fuel cell system controller closes the small hydrogen circulating pump, and unreacted hydrogen returned by the hydrogen return port connector is guided into the drainage inlet by the ejector and then enters the fuel cell stack again; and under the low-power output state of the fuel cell system, starting the small hydrogen circulating pump, and directly introducing unreacted hydrogen returned by the hydrogen return port joint into the hydrogen outlet joint by using the small hydrogen circulating pump to reenter the fuel cell stack.
The high power output state refers to that the power output reaches 40% of the rated power, and the low power output state refers to that the power output is less than 40% of the rated power.
Compared with the prior art, the utility model, following effect has:
1) the fuel cell hydrogen supply system comprises a proportional valve, an ejector, a small hydrogen circulating pump, a hydrogen inlet joint, a hydrogen outlet joint, a hydrogen return joint and a plurality of connecting pipelines, wherein one end of the proportional valve is connected with the hydrogen inlet joint through the connecting pipeline, the other end of the proportional valve is connected with the inlet end of the ejector through the connecting pipeline, the outlet end of the ejector is connected with the hydrogen outlet joint through the connecting pipeline, the small hydrogen circulating pump is connected between the hydrogen return joint and the hydrogen outlet joint through the connecting pipeline, and the hydrogen return joint is connected with the drainage inlet of the ejector through the connecting pipeline; the utility model discloses a single ejector + small-size hydrogen circulating pump's integration setting makes fuel cell advance hydrogen adjusting device and satisfies the different of low-power, high power simultaneously and draws and penetrate the requirement, advances hydrogen regulation and returns hydrogen regulation and go on simultaneously, makes to advance hydrogen regulation and hydrogen circulation function simple and reliable, and simple structure is reasonable, and application scope is wide.
2) Other advantages of the present invention will be described in detail in the examples section.
Description of the drawings:
fig. 1 is a perspective view of a hydrogen supply system for a fuel cell according to an embodiment of the present invention;
fig. 2 is a perspective view of a fuel cell hydrogen supply system according to another embodiment of the present invention;
fig. 3 is an exploded perspective view of a hydrogen supply system for a fuel cell according to an embodiment of the present invention;
fig. 4 is a partially exploded view of a fuel cell hydrogen supply system according to an embodiment of the present invention;
fig. 5 is a side view of a fuel cell hydrogen supply system according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
fig. 7 is a perspective view of an ejector in the hydrogen supply system for a fuel cell according to the present invention;
fig. 8 is an exploded view of an eductor in a hydrogen supply system for a fuel cell according to the present invention;
fig. 9 is an exploded view of the injector of the fuel cell hydrogen supply system of the present invention;
fig. 10 is an exploded view of the mixing chamber of the eductor in the hydrogen supply system for a fuel cell of the present invention;
fig. 11 is an exploded view of an ejector sleeve of the fuel cell hydrogen supply system of the present invention;
fig. 12 is a side view of an eductor in a fuel cell hydrogen supply system according to the present invention;
FIG. 13 is a cross-sectional view B-B of FIG. 12;
fig. 14 is a schematic connection diagram of a fuel cell system according to a second embodiment of the present invention;
fig. 15 is a control schematic diagram of the fuel cell system.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to 7 and 14, the present embodiment provides a hydrogen supply system for a fuel cell, which is characterized in that: the device comprises a proportional valve 1, an ejector 2, a small-sized hydrogen circulating pump 3, a hydrogen inlet joint 4, a hydrogen outlet joint 5, a hydrogen return joint 6 and a plurality of connecting pipelines, wherein one end of the proportional valve 1 is connected with the hydrogen inlet joint 4 by the connecting pipeline, the other end of the proportional valve 1 is connected with an inlet end 21 of the ejector 2 by the connecting pipeline, an outlet end 22 of the ejector 2 is connected with the hydrogen outlet joint 5 by the connecting pipeline, the small-sized hydrogen circulating pump 3 is connected between the hydrogen return joint 6 and the hydrogen outlet joint 5 by the connecting pipeline, the hydrogen return joint 6 is connected with a drainage inlet 23 of the ejector 2 by the connecting pipeline, the utility model adopts the integrated arrangement of a single ejector and the small-sized hydrogen circulating pump, so that the fuel cell hydrogen inlet adjusting device can meet different ejection requirements of low power and high power simultaneously, the hydrogen inlet adjustment and the hydrogen return adjustment can be carried out simultaneously, and the hydrogen inlet adjustment and the hydrogen circulation functions are, simple and reasonable structure and wide application range. The main characteristics are that: 1) the single ejector is combined with a small hydrogen circulating pump, so that the requirements of low-power accurate control of hydrogen return quantity and high-power efficient operation are met; 2) the ejector component is modularized, and only the ejector component needs to be replaced for changing the design; 3) The hydrogen inlet regulation and hydrogen circulation functions are simple and reliable. 4) And the installation space is saved due to the integrated design. 5) The production efficiency and the assembly production efficiency are high, and the cost is low. The lines with arrows in fig. 14 represent connecting lines.
The hydrogen circulation inlet 103 is communicated with the exhaust port 11 through the external connecting pipeline 61, the exhaust port 11 is connected with the purge valve, the external connecting pipeline 61 and the exhaust port 11 are located outside the collection block 10, and the hydrogen circulation inlet is simple in structure and convenient to install.
The outlet end 22 of the ejector 2 is connected with a pressure release valve 7, and the pressure release valve 7 ensures the use safety of the hydrogen supply system of the fuel cell.
The aforesaid installs first pressure sensor 12 between proportional valve 1 and ejector 2, install second pressure sensor 13 between exit end 22 and the hydrogen outlet joint 5 of ejector 2, install third pressure sensor 14 at small-size hydrogen circulating pump 3 and hydrogen return port joint 6, first pressure sensor 12 and second pressure sensor 13 are used for detecting the pressure in hydrogen gas circuit, feedback pressure signal gives the controller in order to adjust proportional valve 1's size, the inside safety monitoring of fuel cell hydrogen supply system has been strengthened.
The ejector 2 is arranged in a channel dug in the collection block 10, the collection block 10 is provided with a high-pressure hydrogen inlet 101, a hydrogen supply outlet 102 and a hydrogen circulation inlet 103, the hydrogen inlet connector 4 is arranged at the high-pressure hydrogen inlet 101, the hydrogen outlet connector 5 is arranged at the hydrogen supply outlet 102, the hydrogen return connector 6 is arranged at the hydrogen circulation inlet 103, and the fuel cell hydrogen supply system is integrally designed through the collection block 10, so that the structure is simple and compact, and the installation space is saved; the production and assembly efficiency is high, the integration level is high, and the cost is low.
The proportional valve 1, the pressure release valve 7, the first pressure sensor 12 and the second pressure sensor 13 are installed on the aggregate block 10, and are integrally designed and simple and compact in structure.
A plurality of connecting pipelines are formed by excavating channels in the collection block 10, and the structural arrangement is reasonable.
The first heating plate 104 and the second heating plate 105 are respectively installed at the bottom and one side of the cluster 10, and can be used for cold start of a hydrogen supply system of a fuel cell, and can work even when the ambient temperature is low, thereby improving the reliability.
The small-size hydrogen circulating pump 3 is installed in the bottom of glomeration 10, and small-size hydrogen circulating pump 3 is located one side of first hot plate 104, simple structure.
The bottom of the small-sized hydrogen circulating pump 3 is provided with a mounting foot 31, which is convenient for the installation of a fuel cell hydrogen supply system.
As shown in fig. 7 to 13, the ejector 2 includes a nozzle 1a, a mixing chamber 2a, an ejector sleeve 3a, an inner seal ring 4a and a fastening screw 5a, the ejector sleeve 3a is a cylinder, a circular cavity 31a is formed in the middle of the ejector sleeve 3a, and the nozzle 1a and the mixing chamber 2a are respectively sleeved at two ends of the ejector sleeve 3 a; the mixing chamber 2a and the ejection sleeve 3a are sealed by an inner sealing ring 4a, the nozzle 1a and the ejection sleeve 3a are sealed by the inner sealing ring 4a, the nozzle 1a and the mixing chamber 2a are installed and fixed on the ejection sleeve 3a by a fastening screw 5a, a gap is arranged on the wall surface of the middle part of the ejection sleeve 3a to be used as a drainage inlet 23, a first flow passage 11a is arranged in the middle of the nozzle 1a to be used as a passage for high-pressure fluid for doing work, an inlet end 21 is arranged at one end of the nozzle 1a, a high-pressure jet opening 13a is arranged at the other end of the nozzle 1a, the mixing chamber 2a is provided with a mixing section flow passage 21a and an expansion section flow passage 22a, the high-pressure fluid for doing work sprayed by the high-pressure jet opening 13a and the drained fluid flowing in the drainage inlet 23 are mixed in the mixing section flow passage 21a and are ejected out from the outlet end 22a after passing through the, The novel ejector has the advantages that the interchangeability is good, the manufacturing cost is low, the nozzle and the mixing chamber are combined and replaced under the condition that the ejector sleeve is not changed, different performance requirements can be met, the outer wheel of the whole ejector is wide and cylindrical, the novel ejector is easy to be integrated with other parts of the whole hydrogen loop in an integrated mode, and the occupied size is small.
The nozzle 1a comprises a first cylindrical part 14a and an injection part 15a connected with the first cylindrical part 14a, the outer surface of the first cylindrical part 14a is matched and nested with the inner surface of the injection sleeve 3a, and an inner sealing ring 4a is arranged between the outer surface of the first cylindrical part 14a and the inner surface of the injection sleeve 3a for sealing, so that the sealing effect is good, and the assembly precision is high.
One end of the first cylindrical part 14a is provided with a first flange flanging 16a, the first flange flanging 16a is provided with a plurality of first mounting holes 17a, the front end face 30a of the injection sleeve 3a is provided with a plurality of first screw holes 33a, the first mounting holes 17a correspond to the first screw holes 33a, the fastening screws 5a penetrate through the first mounting holes 17a and are screwed into the first screw holes 33a to install the nozzle 1a on the injection sleeve 3a, the mounting structure is simple, and the assembly precision is high.
The injection part 15a is a cone, and the notch 32a of the injection sleeve 3a is positioned on one side of the middle part of the injection part 15a, so that the structural arrangement is reasonable.
At least one first annular groove 141a is formed in the outer surface of the first cylindrical portion 14a, and the inner seal ring 4a is mounted in the first annular groove 141a, so that the sealing effect is good.
The mixing chamber 2a comprises a second cylindrical part 23a, a mixing section inlet 232a and an expansion section outlet 233a are respectively formed at two ends of the second cylindrical part 23a, and an inner sealing ring 4a is arranged between the outer surface of the second cylindrical part 23a and the inner surface of the injection sleeve 3a for sealing, so that the sealing effect is good.
One end of the second cylindrical part 23a is provided with a second flange flanging 24a, the second flange flanging 24a is provided with a plurality of second mounting holes 25a, the rear end face 300a of the injection sleeve 3a is provided with a plurality of second screw holes 34a, the second mounting holes 25a correspond to the second screw holes 34a in position, the mixing chamber 2a is mounted on the injection sleeve 3a by screwing fastening screws 5a into the second screw holes 34a through the second mounting holes 25a, and the mounting structure is simple and the assembly precision is high.
At least one second annular groove 231a is formed in the outer surface of the second cylindrical portion 23a, and an inner sealing ring 4a is mounted in the second annular groove 231a, so that the sealing effect is good, and the assembly precision is high.
The diameter D1 of first flange turn-ups 16a and the diameter D2 of second flange turn-ups 24a all are less than or equal to draw the diameter D3 that penetrates set 3a, form the cylinder between nozzle 1a, mixing chamber 2a and the drawing set 3a, simple structure, whole installation occupation space is little, easily with the other part integration of whole hydrogen circuit.
Draw the surface both ends of penetrating cover 3a to be equipped with a plurality of third annular grooves 35a and fourth annular groove 36a respectively, draw the breach of penetrating cover 3a to be located between third annular groove 35a and the fourth annular groove 36a, all install external seal ring 6a in third annular groove 35a and the fourth annular groove 36a, it is sealed effectual. The outer sealing ring 6a is in sealing fit with the inner wall of a channel dug in the block 10. The sealing effect is good, the installation is convenient, and the outer sealing ring 6a and the inner sealing ring 4a are O-shaped sealing rings.
Example two:
as shown in fig. 1, 3, 14, and 15, the present embodiment provides a fuel cell system, which includes a fuel cell system controller 81, a fuel cell stack 83, and a fuel cell hydrogen supply system 200, and is characterized in that: the fuel cell hydrogen supply system 200 is the fuel cell hydrogen supply system described in the first embodiment, the fuel cell hydrogen supply system 200 includes a proportional valve 1, an ejector 2, a small hydrogen circulation pump 3, a hydrogen inlet joint 4, a hydrogen outlet joint 5, a hydrogen return joint 6 and a plurality of connecting pipelines, the hydrogen inlet joint 4 is connected with a high-pressure hydrogen tank 82, the hydrogen outlet joint 5 is connected with a hydrogen inlet of a fuel cell stack 83, the hydrogen return joint 6 is connected with a hydrogen outlet 831 of the fuel cell stack 83, the fuel cell system controller 81 controls the proportional valve 1 and the small hydrogen circulation pump 3 to be opened or closed, and the fuel cell system is simpler in structure, smaller in volume and safer to use by improving the fuel cell hydrogen supply system 200.
An inlet end 21 of the ejector 2 is connected with the pressure release valve 7, a first pressure sensor 12 is arranged between the proportional valve 1 and the ejector 2, a second pressure sensor 13 is arranged at an outlet end 22 of the ejector 2 and the hydrogen outlet joint 5, a third pressure sensor 14 is arranged at the small-sized hydrogen circulating pump 3 and the hydrogen return joint 6, and the first pressure sensor 12, the second pressure sensor 13 and the third pressure sensor 14 transmit hydrogen pipeline pressure signals of different parts to the fuel cell system controller 81.
Under the high-power output state of the fuel cell system, the fuel cell system controller 81 closes the small hydrogen circulating pump 3, and unreacted hydrogen returned by the hydrogen return port connector 6 is guided into the drainage inlet 23 by using the ejector 2 and then enters the fuel cell stack 83 again; in the low power output state of the fuel cell system, the small hydrogen circulation pump 3 is turned on, and the unreacted hydrogen returned from the hydrogen return port connector 6 is directly introduced into the hydrogen outlet connector 5 by the small hydrogen circulation pump 3 and reenters the fuel cell stack 83.
When the fuel cell power system is in a high-power operation state, the output power is larger than or equal to a certain threshold value, and when the fuel cell system is in a low-power operation state, the output rate is smaller than a certain threshold value. The certain threshold is in the range of 40% -80% of the rated power of the fuel cell power system. The high power output state can be set to 40% of the rated power, and the low power output state is set to 40% of the rated power.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (14)
1. A fuel cell hydrogen supply system characterized by: it includes proportional valve (1), ejector (2), small-size hydrogen circulating pump (3), advance hydrogen mouth joint (4), go out hydrogen mouth joint (5) and return hydrogen mouth joint (6) and a plurality of connecting line, proportional valve (1) one end utilizes connecting line and advances hydrogen mouth joint (4) to be connected, proportional valve (1) other end utilizes connecting line to be connected with entry end (21) of ejector (2), exit end (22) of ejector (2) utilize connecting line to connect hydrogen mouth joint (5), return and utilize connecting line to connect small-size hydrogen circulating pump (3) between hydrogen mouth joint (6) and the hydrogen mouth joint (5), return hydrogen mouth joint (6) and utilize connecting line to be connected with drainage entry (23) of ejector (2).
2. A fuel cell hydrogen supply system according to claim 1, characterized in that: the outlet end (22) of the ejector (2) is connected with the pressure release valve (7).
3. A fuel cell hydrogen supply system according to claim 2, characterized in that: install first pressure sensor (12) between proportional valve (1) and ejector (2), install second pressure sensor (13) between exit end (22) and the hydrogen outlet joint (5) of ejector (2), install third pressure sensor (14) at small-size hydrogen circulating pump (3) and back hydrogen mouth joint (6).
4. A fuel cell hydrogen supply system according to claim 3, characterized in that: ejector (2) are installed in the passageway of digging out in glomeration (10) the inside, and glomeration (10) are equipped with high-pressure hydrogen entry (101), hydrogen air feed export (102) and hydrogen circulation entry (103), it installs in high-pressure hydrogen entry (101) to advance hydrogen mouth joint (4), it installs in hydrogen air feed export (102) to go out hydrogen mouth joint (5), it installs in hydrogen circulation entry (103) to return hydrogen mouth joint (6).
5. A fuel cell hydrogen supply system according to claim 4, wherein: the proportional valve (1), the pressure release valve (7), the first pressure sensor (12) and the second pressure sensor (13) are installed on the aggregate block (10).
6. A fuel cell hydrogen supply system according to claim 5, wherein: the hydrogen circulation inlet (103) is communicated with the exhaust port (11) through an external connecting pipeline (61), the exhaust port (11) is connected with a purging valve, and the external connecting pipeline (61) and the exhaust port (11) are positioned outside the collection block (10).
7. A fuel cell hydrogen supply system according to claim 6, wherein: several connecting lines are formed by digging channels inside the manifold block (10).
8. A fuel cell hydrogen supply system according to any one of claims 1 to 7, characterized in that: a first heating plate (104) and a second heating plate (105) are respectively arranged at the bottom and one side of the block (10).
9. A fuel cell hydrogen supply system according to claim 8, wherein: the small-sized hydrogen circulating pump (3) is arranged at the bottom of the collecting block (10), and the small-sized hydrogen circulating pump (3) is positioned on one side of the first heating plate (104).
10. A fuel cell hydrogen supply system according to claim 9, wherein: the bottom of the small-sized hydrogen circulating pump (3) is provided with a mounting foot (31).
11. A fuel cell system comprising a fuel cell system controller (81), a fuel cell stack (83), and a fuel cell hydrogen supply system (200), characterized in that: the fuel cell hydrogen supply system (200) is as claimed in any one of claims 1 to 10, the fuel cell hydrogen supply system (200) comprises a proportional valve (1), an ejector (2), a small hydrogen circulating pump (3), a hydrogen inlet joint (4), a hydrogen outlet joint (5), a hydrogen return joint (6) and a plurality of connecting pipelines, the hydrogen inlet joint (4) is connected with a high-pressure hydrogen tank (82), the hydrogen outlet joint (5) is connected with a hydrogen inlet of a fuel cell stack (83), the hydrogen return joint (6) is connected with a hydrogen outlet (831) of the fuel cell stack (83), and a fuel cell system controller (81) controls the proportional valve (1) and the small hydrogen circulating pump (3) to be opened or closed.
12. A fuel cell system according to claim 11, wherein: entry end (21) of ejector (2) connect relief valve (7), install first pressure sensor (12) between proportional valve (1) and ejector (2), exit end (22) and hydrogen outlet joint (5) at ejector (2) install second pressure sensor (13), at small-size hydrogen circulating pump (3) and back hydrogen mouth joint (6) installation third pressure sensor (14), first pressure sensor (12), second pressure sensor (13) and third pressure sensor (14) transmit the hydrogen pipeline pressure signal of different positions to fuel cell system controller (81).
13. A fuel cell system according to claim 12, wherein: under the high-power output state of the fuel cell system, the fuel cell system controller (81) closes the small hydrogen circulating pump (3), and unreacted hydrogen returned by the hydrogen return port connector (6) is guided into the drainage inlet (23) by the ejector (2) and then enters the fuel cell stack (83) again; in the low power output state of the fuel cell system, the small hydrogen circulating pump (3) is started, and the unreacted hydrogen returned by the hydrogen return port joint (6) is directly led into the hydrogen outlet joint (5) by the small hydrogen circulating pump (3) and enters the fuel cell stack (83) again.
14. A fuel cell system according to claim 13, wherein: the high power output state refers to that the power output reaches 40% of the rated power, and the low power output state refers to that the power output is less than 40% of the rated power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132697.2U CN210224185U (en) | 2019-07-18 | 2019-07-18 | Fuel cell hydrogen supply system and fuel cell system applying same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132697.2U CN210224185U (en) | 2019-07-18 | 2019-07-18 | Fuel cell hydrogen supply system and fuel cell system applying same |
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| CN210224185U true CN210224185U (en) | 2020-03-31 |
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| CN201921132697.2U Withdrawn - After Issue CN210224185U (en) | 2019-07-18 | 2019-07-18 | Fuel cell hydrogen supply system and fuel cell system applying same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247083A (en) * | 2019-07-18 | 2019-09-17 | 中山大洋电机股份有限公司 | A kind of fuel cell hydrogen-feeding system and its fuel cell system of application |
| CN112864419A (en) * | 2021-03-15 | 2021-05-28 | 烟台东德实业有限公司 | Hydrogen circulating pump and ejector series integrated fuel cell hydrogen supply system |
-
2019
- 2019-07-18 CN CN201921132697.2U patent/CN210224185U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247083A (en) * | 2019-07-18 | 2019-09-17 | 中山大洋电机股份有限公司 | A kind of fuel cell hydrogen-feeding system and its fuel cell system of application |
| CN110247083B (en) * | 2019-07-18 | 2023-08-01 | 中山大洋电机股份有限公司 | Fuel cell hydrogen supply system and fuel cell system using same |
| CN112864419A (en) * | 2021-03-15 | 2021-05-28 | 烟台东德实业有限公司 | Hydrogen circulating pump and ejector series integrated fuel cell hydrogen supply system |
| CN112864419B (en) * | 2021-03-15 | 2021-11-09 | 烟台东德实业有限公司 | Hydrogen circulating pump and ejector series integrated fuel cell hydrogen supply system |
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