CN211829052U - Ventilation device for hydrogen fuel cell box - Google Patents
Ventilation device for hydrogen fuel cell box Download PDFInfo
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- CN211829052U CN211829052U CN201922492255.5U CN201922492255U CN211829052U CN 211829052 U CN211829052 U CN 211829052U CN 201922492255 U CN201922492255 U CN 201922492255U CN 211829052 U CN211829052 U CN 211829052U
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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 ventilation unit for hydrogen fuel cell box, including setting up air intake and the air exit on hydrogen fuel cell box, the air intake is including first air intake and the second air intake that is connected with pressure air source, and the inboard bottom of hydrogen fuel cell box is provided with the wind pipeline of sweeping that circumference was arranged, sweeps wind pipeline and first air intake intercommunication, sweeps and is provided with a plurality of wind mouths of sweeping on the wind pipeline, and sweeps the inboard of wind mouth all towards hydrogen fuel cell box and arrange. This a ventilation unit for hydrogen fuel cell box supplies the air through pressure air supply and blows in the hydrogen fuel cell box by the wind gap on the wind pipeline again, because the wind pipeline is arranged along the bottom circumference of hydrogen fuel cell box to the inboard of hydrogen fuel cell box of orientation is arranged, consequently can carry out the mixture that sweeps from bottom to top to the air current in the whole hydrogen fuel cell box, has avoided local hydrogen to detain the dead angle, the too high problem of local hydrogen concentration that leads to.
Description
Technical Field
The utility model relates to a hydrogen fuel cell technical field especially relates to a ventilation unit for hydrogen fuel cell box.
Background
A fuel cell is a device that directly converts chemical energy of fuel into electric energy, and the electric energy is continuously generated as long as the fuel is continuously supplied; for a hydrogen fuel cell, the raw materials for the reaction are hydrogen and oxygen, the reaction site is a galvanic pile, and the reaction product is water; at present, a fuel cell stack, a hydrogen supply system and most of accessories (a hydrogen switch valve, a pressure regulating valve, a pressure release valve, a gas-water separator, a hydrogen circulating pump and the like) are arranged in a box body, the problem of leakage possibly exists at each accessory and a joint in the working process, particularly, the fuel cell stack per se has certain leakage amount, and the fuel cell box body requires to reach a certain sealing grade (IP 67 is an expected target in the industry at present), so that leaked hydrogen can be concentrated in the box body, the hydrogen in the box body is required to be discharged timely, the concentration of the hydrogen in the box body is reduced below a safety value, and personal and property safety is ensured. Therefore, it is important to add a ventilation device on the fuel cell case to exhaust the hydrogen-containing gas in the case, and to ensure the sealing performance of the case.
The conventional method for ventilating the fuel cell engine case at present is as shown in fig. 1, an air inlet 2 is reserved on one side surface of the case 1, an air outlet 3 is reserved on the opposite side surface of the case 1, an air inlet fan is installed at the air inlet, and a stack 4 is arranged in the case 1. During the operation of the fuel cell engine, the air intake fan operates to convey fresh air into the box, the fresh air is mixed with the gas containing hydrogen in the box, and the mixed gas is exhausted from the exhaust port. The method can effectively reduce the concentration of hydrogen in the box body, but the gas circulation is blocked by the galvanic pile and other auxiliary components arranged in the box body of the fuel cell engine, and the situation that the local hydrogen concentration is too high can occur.
In summary, how to solve the problem of too high local hydrogen concentration in the hydrogen fuel cell box has become a technical problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a ventilation unit for hydrogen fuel cell box to solve the too high problem of local hydrogen concentration in the hydrogen fuel cell box.
In order to realize the above object, the utility model provides a ventilation unit for hydrogen fuel cell box, be in including setting up air intake and air exit on the hydrogen fuel cell box, the air intake is including first air intake and the second air intake that is connected with pressure air supply, the inboard bottom of hydrogen fuel cell box is provided with the air pipe way of sweeping that circumference was arranged, sweep the air pipe way with first air intake intercommunication, it is provided with a plurality of air ports of sweeping on the air pipe way, just sweep the air port and all move towards the inboard of hydrogen fuel cell box is arranged.
Preferably, the air sweeping openings are uniformly arranged on the air sweeping pipeline.
Preferably, the air scavenging opening and the bottom plate of the hydrogen fuel cell box body form an inclined angle of 30-60 degrees.
Preferably, the air sweeping pipeline is a U-shaped air guide pipe, and the first air inlet is communicated with the middle section of the U-shaped air guide pipe.
Preferably, the number of the first air inlets is at least two.
Preferably, the second air inlet is arranged at the side part of the hydrogen fuel cell box body.
Preferably, a filter structure is arranged on the hydrogen fuel cell box, and the second air inlet is arranged on the air inlet side of the filter structure.
Preferably, the filtering structure comprises an installation groove arranged on a side plate of the hydrogen fuel cell box body, a porous lining plate fixed in the installation groove, a filter element fixed on the porous lining plate, and an air inlet cover arranged on the installation groove in a sealing cover manner, and the second air inlet is arranged on the air inlet cover.
Preferably, the exhaust vent is located at the top of the hydrogen fuel cell case.
Preferably, an exhaust structure is arranged on a top plate of the hydrogen fuel cell box body, the exhaust structure comprises a vent hole arranged on the top plate, an exhaust fan fixed at the vent hole and an exhaust hood arranged outside the exhaust fan, and the exhaust port is arranged on the exhaust hood.
Preferably, the pressure air source is air led out from an air compressor of the engine after passing through an intercooler.
Preferably, a sensor for detecting the hydrogen concentration is arranged in the hydrogen fuel cell box, and an electric control valve is arranged between the pressure air source and the first air inlet.
Compared with the introduction content of the background technology, the ventilation device for the hydrogen fuel cell box comprises an air inlet and an air outlet which are arranged on the hydrogen fuel cell box, wherein the air inlet comprises a first air inlet and a second air inlet which are connected with a pressure air source, the bottom of the inner side of the hydrogen fuel cell box is provided with a circumferentially arranged air sweeping pipeline, the air sweeping pipeline is communicated with the first air inlet, the air sweeping pipeline is provided with a plurality of air sweeping ports, and the air sweeping ports are all arranged towards the inner side of the hydrogen fuel cell box. In the ventilation device for the hydrogen fuel cell box body, in the actual use process, outside air enters the box body of the hydrogen fuel cell through the first air inlet and the second air inlet respectively and is then discharged through the air outlet, so that hydrogen in the box body of the hydrogen fuel cell is taken away; and first air intake connection has pressure air supply, supplies air through pressure air supply and blows in the hydrogen fuel cell box in by the sweeping wind gap on the sweeping wind pipeline again, because the sweeping wind pipeline is arranged along the bottom circumference of hydrogen fuel cell box to arrange towards the inboard of hydrogen fuel cell box, consequently can carry out the mixture of sweeping from bottom to top to the air current in the whole hydrogen fuel cell box, avoided local hydrogen to detain the dead angle, the too high problem of local hydrogen concentration that leads to.
Drawings
FIG. 1 is a schematic view of a conventional vent structure for a hydrogen fuel cell housing;
fig. 2 is a schematic top view of a ventilation device for a hydrogen fuel cell case according to an embodiment of the present invention;
fig. 3 is a schematic front view of a ventilation device for a hydrogen fuel cell case according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an air sweeping pipeline arranged at the bottom of a hydrogen fuel cell box body according to an embodiment of the present invention;
fig. 5 is a schematic external axial view of a hydrogen fuel cell case according to an embodiment of the present invention;
fig. 6 is a schematic view of a split structure of a filtering structure provided in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a side portion of a hydrogen fuel cell case where a first air inlet is disposed according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a wind sweeping pipeline provided in an embodiment of the present invention;
fig. 9 is a schematic view of an air exhaust structure provided by the embodiment of the present invention.
In the above-mentioned figure 1, the first,
the device comprises a box body 1, an air inlet 2, an air outlet 3 and a galvanic pile 4;
in the above figures 2-9 of the drawings,
the device comprises a hydrogen fuel cell box 10, a top plate 10a, a first air inlet 11a, a second air inlet 11b, an air outlet 12, a scavenging pipeline 13, a scavenging opening 14, a filtering structure 15, a mounting groove 15a, a porous lining plate 15b, a filter element 15c, an air inlet cover 15d, a sealing ring 15e, a vent hole 16a, an exhaust fan 16b, an exhaust cover 16c and a sealing gasket 16 d.
Detailed Description
The core of the utility model is to provide a ventilation unit for hydrogen fuel cell box to solve the too high problem of local hydrogen concentration in the hydrogen fuel cell box.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2-9, an embodiment of the present invention provides a ventilation device for a hydrogen fuel cell box, including air intake and air outlet 12 arranged on the hydrogen fuel cell box 10, the air intake includes a first air intake 11a and a second air intake 11b connected with a pressure air source, the inside bottom of the hydrogen fuel cell box 10 is provided with a wind sweeping pipeline 13 arranged in a circumferential direction, the wind sweeping pipeline 13 is communicated with the first air intake 11a, the wind sweeping pipeline 13 is provided with a plurality of wind sweeping ports 14, and the wind sweeping ports 14 are all arranged towards the inside of the hydrogen fuel cell box 10.
In the ventilation device for the hydrogen fuel cell box body, in the actual use process, outside air enters the box body of the hydrogen fuel cell through the first air inlet and the second air inlet respectively and is then discharged through the air outlet, so that hydrogen in the box body of the hydrogen fuel cell is taken away; and first air intake connection has pressure air supply, supplies air through pressure air supply and blows in the hydrogen fuel cell box in by the sweeping wind gap on the sweeping wind pipeline again, because the sweeping wind pipeline is arranged along the bottom circumference of hydrogen fuel cell box to arrange towards the inboard of hydrogen fuel cell box, consequently can carry out the mixture of sweeping from bottom to top to the air current in the whole hydrogen fuel cell box, avoided local hydrogen to detain the dead angle, the too high problem of local hydrogen concentration that leads to.
It should be noted here that, in general, the air-sweeping openings 14 are arranged on the air-sweeping duct 13 in a uniform arrangement manner, and the air-sweeping openings of the air-sweeping duct can be more uniform in the uniform arrangement manner. It is understood that the above-mentioned manner of uniform arrangement is only a preferred example of the embodiment of the present invention, and during the practical application, the arrangement may also be performed in a manner of non-uniform arrangement according to the practical requirement.
In some more specific embodiments, the aforementioned purge port 14 is generally disposed at an oblique angle of 30 ° to 60 ° with respect to the bottom plate of the hydrogen fuel cell case 10. The arrangement of the inclination angle enables the air sweeping airflow discharged from the air sweeping port to have a movement trend from bottom to top, and the mixing capability of air and hydrogen is improved. It is understood that the above listed values of the inclination angle are merely preferred examples applicable to most of the hydrogen fuel cell box structures of the present invention, and other values of the inclination angle can be selected according to actual requirements during practical application.
In some more specific embodiments, the specific structure of the air sweeping pipeline 13 may be a U-shaped air guiding pipe structure, and in order to make the air guiding uniformity of the air guiding pipe, the corresponding first air inlet 11a communicates with the middle section of the U-shaped air guiding pipe. It should be noted that the above-mentioned structure using the U-shaped airway tube is only a preferred example of the embodiment of the present invention, and other structures, such as the structures arranged in an intersecting manner, may also be selected during the practical application.
It should be noted that, in order to ensure the air supply effect of the first air inlet to the air sweeping duct, the number of the first air inlets 11a is generally set to be at least two. The purpose of the arrangement is to increase the air supply amount on one hand and avoid the problem of abnormal operation caused by blockage of one air inlet on the other hand.
It should be noted that the second intake port 11b is generally disposed on the side of the hydrogen fuel cell case 10. Of course, in practical application, the design can be in other positions according to the actual arrangement requirement.
In a further embodiment, in order to prevent impurities from entering the interior of the hydrogen fuel tank, a filter structure 15 is generally provided on the hydrogen fuel cell tank 10, and the second intake vent 11b is provided on the intake side of the filter structure 15.
Specifically, the specific structure of the filter structure 15 may include a mounting groove 15a provided on a side plate of the hydrogen fuel cell case 10, a porous liner 15b fixed in the mounting groove 15a, a filter element 15c fixed on the porous liner 15b, and an intake cover 15d which is sealed and provided on the mounting groove 15a, and the second intake vent 11b is provided on the intake cover 15 d. The installation and the disassembly of the selected filtering structure are more convenient. It should be noted that, in order to ensure the connection sealing performance between the intake cover and the mounting groove, a sealing ring 15e is generally disposed between the intake cover and the mounting groove. It is understood, of course, that the foregoing is merely a preferred example of the filter structure according to the embodiments of the present invention, and that other filter structures may be selected during practical applications.
In some specific embodiments, the exhaust vent 12 is preferably disposed at the top of the hydrogen fuel cell case 10. This is because the hydrogen gas has a lower density than air and is therefore generally located in the upper portion of the hydrogen fuel tank, and the provision of the exhaust port at the top portion is more convenient for the discharge of hydrogen gas.
In order to smoothly discharge the air flow in the hydrogen fuel cell case, an air discharge structure is generally provided on the top plate 10a of the hydrogen fuel cell case 10, and the air discharge structure may specifically include a vent hole 16a provided on the top plate 10a, an exhaust fan 16b fixed to the vent hole 16a, and an exhaust hood 16c in which a seal cover is provided outside the exhaust fan 16b, and the exhaust port 12 is provided on the exhaust hood 16 c. By designing the above-described air discharge structure, the exhaust fan can be protected to a certain extent, and a gasket 16d is provided between the exhaust hood 16c and the top plate 10a in order to ensure the sealing property of the hydrogen fuel cell case.
In a further embodiment, the pressure air source may be air led out from an air compressor of the engine after passing through an intercooler. The air source device on the engine self equipment is directly selected through the pressure air source, the cost increased by additionally arranging the air source device is avoided, and meanwhile, the occupied space of the equipment is effectively reduced.
In some more specific embodiments, a sensor for detecting the hydrogen concentration is generally disposed in the hydrogen fuel cell casing 10, and an electronic control valve is disposed between the pressure gas source and the first air inlet 11a, and the opening and closing of the electronic control valve can be adjusted by controlling the electronic control valve according to the hydrogen concentration detected by the sensor.
For a better understanding of the ventilation device provided by the present invention, the following description is provided in conjunction with the specific operation of the ventilation device:
the fuel cell engine sends a starting command, the exhaust fan 16b starts to operate, an electric control valve between the air compressor and the intercooler and reaching the first air inlet is opened, and an air inlet system and an air exhaust system which are formed by the first air inlet and the second air inlet start to work;
when the fuel cell engine enters a normal working state, the electric control valve between the first air inlet and the pressure air source is closed, the first air inlet is opened for 1 minute at regular intervals for purging, and then the first air inlet is closed to reduce energy consumption;
when the hydrogen concentration sensor in the box body detects that the hydrogen concentration reaches a certain value, the electric control valve is opened all the time to purge the box body until the hydrogen concentration is reduced to be below a safety value, and the electric control valve enters a periodic opening circulation mode again;
a corresponding cylindrical interface is arranged on the air inlet cover 15d corresponding to the second air inlet 11b and is connected with the rubber pipe to introduce external fresh air; the exhaust hood 16c of the exhaust structure is provided with a corresponding cylindrical interface which is connected with a rubber tube, and the gas pumped out by the exhaust fan 16b is led out to a safe position by the rubber tube to be discharged; the structure ensures the sealing performance of the box body;
the fuel cell engine sends a shutdown command, and an electric control valve of the auxiliary air intake system is opened all the time to purge the box body until the electric control valve is closed when the air compressor stops working; the exhaust fan 16b stops after the fuel cell engine is completely shut down for 3-5 minutes.
As a further optimization of the ventilation apparatus, the rotation speed of the exhaust fan 16b is controlled to be operated in two rotation speed points, and when it is detected that the hydrogen concentration in the casing reaches a certain value, the exhaust fan 16b is operated at a high rotation speed, and when the hydrogen concentration is lower than the certain value, the exhaust fan 16b is operated at a low rotation speed. By doing so, it is possible to ensure that the concentration of hydrogen in the tank is below a safe value and to reduce the energy consumed by the operation of the exhaust fan
The present invention provides a ventilation device system for a hydrogen fuel cell case, which is described in detail above. It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities. Also, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (12)
1. The utility model provides a ventilation unit for hydrogen fuel cell box, is including setting up air intake and air exit (12) on hydrogen fuel cell box (10), its characterized in that, the air intake is including first air intake (11a) and second air intake (11b) that are connected with pressure air supply, the inboard bottom of hydrogen fuel cell box (10) is provided with sweeping wind pipeline (13) that circumference was arranged, sweep wind pipeline (13) with first air intake (11a) intercommunication, be provided with a plurality of sweeping wind mouth (14) on sweeping wind pipeline (13), just sweeping wind mouth (14) all move towards the inboard of hydrogen fuel cell box (10) is arranged.
2. The ventilation device for hydrogen fuel cell tanks according to claim 1, characterized in that the scavenging ports (14) are arranged uniformly on the scavenging line (13).
3. The ventilation device for a hydrogen fuel cell case according to claim 1, wherein the scavenging port (14) is inclined at an angle of 30 ° to 60 ° with respect to the bottom plate of the hydrogen fuel cell case (10).
4. The ventilation device for the hydrogen fuel cell box body according to claim 1, wherein the air sweeping duct (13) is a U-shaped air duct, and the first air inlet (11a) communicates with a middle section of the U-shaped air duct.
5. The ventilating device for a hydrogen fuel cell casing according to claim 4, wherein the number of the first intake ports (11a) is at least two.
6. The ventilation device for a hydrogen fuel cell case according to claim 1, wherein the second intake vent (11b) is provided at a side portion of the hydrogen fuel cell case (10).
7. The ventilation device for a hydrogen fuel cell case according to claim 6, wherein a filter structure (15) is provided on the hydrogen fuel cell case (10), and the second intake vent (11b) is provided on an intake side of the filter structure (15).
8. The ventilating device for a hydrogen fuel cell case according to claim 7, wherein the filter structure (15) comprises a mounting groove (15a) provided on a side plate of the hydrogen fuel cell case (10), a porous packing (15b) fixed in the mounting groove (15a), a filter element (15c) fixed to the porous packing (15b), and an intake cover (15d) hermetically covering the mounting groove (15a), and the second intake vent (11b) is provided on the intake cover (15 d).
9. The ventilation device for a hydrogen fuel cell tank according to claim 1, wherein the exhaust vent (12) is located at a top of the hydrogen fuel cell tank (10).
10. The ventilating device for a hydrogen fuel cell tank according to claim 9, wherein a ventilation structure is provided on a ceiling plate (10a) of the hydrogen fuel cell tank (10), the ventilation structure includes a vent hole (16a) provided on the ceiling plate (10a), an exhaust fan (16b) fixed at the vent hole (16a), and an exhaust hood (16c) hermetically covering the outside of the exhaust fan (16b), and the exhaust port (12) is provided on the exhaust hood (16 c).
11. The ventilation device for a hydrogen fuel cell case according to any one of claims 1 to 10, wherein the pressurized gas source is gas that is led from an air compressor of an engine after passing through an intercooler.
12. The ventilating device for a hydrogen fuel cell casing according to claim 11, wherein a sensor for detecting a hydrogen gas concentration is provided in the hydrogen fuel cell casing (10), and an electrically controlled valve is provided between the pressure gas source and the first air intake port (11 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922492255.5U CN211829052U (en) | 2019-12-31 | 2019-12-31 | Ventilation device for hydrogen fuel cell box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922492255.5U CN211829052U (en) | 2019-12-31 | 2019-12-31 | Ventilation device for hydrogen fuel cell box |
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| CN211829052U true CN211829052U (en) | 2020-10-30 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112687923A (en) * | 2020-12-17 | 2021-04-20 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Marine fuel cell power generation module and safe working method thereof |
| CN113644295A (en) * | 2021-06-28 | 2021-11-12 | 安徽明天新能源科技有限公司 | Fuel cell air system |
| CN114046956A (en) * | 2021-11-10 | 2022-02-15 | 上海凌逐新能源科技有限公司 | Wind tunnel type fuel cell environment cabin and micro-channel wind distribution system |
| CN114204074A (en) * | 2021-12-07 | 2022-03-18 | 上海杰宁新能源科技发展有限公司 | Ventilation device for avoiding hydrogen retention dead angle and used for hydrogen fuel cell box body |
| CN114447368A (en) * | 2022-01-27 | 2022-05-06 | 氢电中科（广州）新能源设备有限公司 | Portable hydrogen fuel cell stack radiator |
| JP2022074964A (en) * | 2020-11-05 | 2022-05-18 | 本田技研工業株式会社 | Housing |
| CN114520359A (en) * | 2022-01-24 | 2022-05-20 | 煤炭科学研究总院有限公司 | Explosion-proof air-cooled fuel cell system |
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2019
- 2019-12-31 CN CN201922492255.5U patent/CN211829052U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11791490B2 (en) | 2020-11-05 | 2023-10-17 | Honda Motor Co., Ltd. | Housing |
| JP2022074964A (en) * | 2020-11-05 | 2022-05-18 | 本田技研工業株式会社 | Housing |
| CN114530609A (en) * | 2020-11-05 | 2022-05-24 | 本田技研工业株式会社 | Shell body |
| JP7142073B2 (en) | 2020-11-05 | 2022-09-26 | 本田技研工業株式会社 | housing |
| CN112687923A (en) * | 2020-12-17 | 2021-04-20 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Marine fuel cell power generation module and safe working method thereof |
| CN113644295A (en) * | 2021-06-28 | 2021-11-12 | 安徽明天新能源科技有限公司 | Fuel cell air system |
| CN114046956A (en) * | 2021-11-10 | 2022-02-15 | 上海凌逐新能源科技有限公司 | Wind tunnel type fuel cell environment cabin and micro-channel wind distribution system |
| CN114046956B (en) * | 2021-11-10 | 2024-05-14 | 上海凌逐新能源科技有限公司 | Wind tunnel type fuel cell environmental chamber and micro-channel wind distribution system |
| CN114204074A (en) * | 2021-12-07 | 2022-03-18 | 上海杰宁新能源科技发展有限公司 | Ventilation device for avoiding hydrogen retention dead angle and used for hydrogen fuel cell box body |
| CN114204074B (en) * | 2021-12-07 | 2023-12-22 | 上海杰宁新能源科技发展有限公司 | Ventilation device for hydrogen fuel cell box body for avoiding hydrogen retention dead angle |
| CN114520359A (en) * | 2022-01-24 | 2022-05-20 | 煤炭科学研究总院有限公司 | Explosion-proof air-cooled fuel cell system |
| CN114520359B (en) * | 2022-01-24 | 2023-10-03 | 煤炭科学研究总院有限公司 | Explosion-proof air-cooled fuel cell system |
| CN114447368B (en) * | 2022-01-27 | 2023-09-15 | 氢电中科（广州）新能源设备有限公司 | Portable hydrogen fuel cell pile radiator |
| CN114447368A (en) * | 2022-01-27 | 2022-05-06 | 氢电中科（广州）新能源设备有限公司 | Portable hydrogen fuel cell stack radiator |
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