CN115939444A - Uniform heat dissipation device for air-cooled fuel cell - Google Patents
Uniform heat dissipation device for air-cooled fuel cell Download PDFInfo
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- CN115939444A CN115939444A CN202211357044.0A CN202211357044A CN115939444A CN 115939444 A CN115939444 A CN 115939444A CN 202211357044 A CN202211357044 A CN 202211357044A CN 115939444 A CN115939444 A CN 115939444A
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- fan
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- fuel cell
- spoiler
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- 239000000446 fuel Substances 0.000 title claims abstract description 41
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 26
- 238000001816 cooling Methods 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000004171 remote diagnosis Methods 0.000 description 1
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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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- Fuel Cell (AREA)
Abstract
The invention provides a uniform heat dissipation device for an air-cooled fuel cell, which comprises a fan, wherein a spoiler is arranged at an air outlet of the fan, the main body of the spoiler is a circular plate, an axle center hole is formed in the center of the circular plate, a plurality of circles of outer edge holes which are opposite to each other along the center of the circular plate are distributed on the outer side of the axle center hole, the diameter of the axle center hole is larger than that of the outer edge holes, and the diameters of the outer edge holes are sequentially reduced from the center of the circular plate to the outer edge. According to the air output distribution characteristic of the fan, the reasonably designed porous spoiler is added between the air outlet of the fan and the electric pile to obviously increase the air inlet amount of the axis of the fan, so that the air amount is uniformly distributed in front of the electric pile, and then the air amount obtained by the outer edge of the electric pile and the air inlet channel in the center of the electric pile is kept consistent.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a uniform heat dissipation device for an air-cooled fuel cell.
Background
With the development of modern power grids, novel contactless long-time routing inspection technology with large work is urgently needed for power routing inspection, remote diagnosis and fault handling and the like. Traditional manpower is patrolled and examined and can't satisfy this demand, and unmanned aerial vehicle has flexible working characteristics, can satisfy the high-efficient demand of patrolling and examining of the safety of complicated region environment, complicated operating condition and electrified environment, and its popularization and application have huge application potentiality in the electric power field of patrolling and examining. At present unmanned aerial vehicle extensively adopts the lithium cell as its power supply, though the lithium cell has power density height, adopts it as the power supply, and unmanned aerial vehicle has the advantage of high mobility, but the energy density of lithium cell is lower, and duration is serious not enough. Electric power patrols and examines long unmanned aerial vehicle of urgent need continuation of the journey, satisfies it and patrols and examines the demand. With the development of hydrogen fuel cell technology, hydrogen fuel cells gradually move to the process of commercial application, the hydrogen fuel cells adopt compressed hydrogen as a reactant, and the energy density of the fuel cells adopting the compressed hydrogen as a working medium is about 3-5 times that of lithium batteries, so that the cruising ability is obviously prolonged. The hydrogen fuel cell which adopts air as a cooling medium, namely the air-cooled fuel cell, can reduce the complexity, the weight and the volume of a fuel cell system, and has obvious advantages when being applied to mobile equipment such as an unmanned aerial vehicle. However, the air-cooled fuel cell still has the problems of low performance, easy environmental influence on the operation condition and the like.
One factor influencing the performance of the air-cooled fuel cell is the temperature control of the air-cooled fuel cell stack, oxidant and coolant of the air-cooled fuel cell are provided by an external fan, the air output and the air quantity distribution of the fan in front of the stack are one of main influencing factors influencing the temperature distribution of the stack, and in order to improve the performance of the air-cooled fuel cell, an air inlet strategy of the air-cooled fuel cell stack needs to be reasonably designed so as to improve the performance of the fuel cell.
Disclosure of Invention
The invention provides a uniform heat dissipation device for an air-cooled fuel cell, aiming at the heat dissipation problem of the existing air-cooled fuel cell, and the device is mainly characterized in that a reasonably designed porous spoiler is added between a fan air outlet and a galvanic pile according to the air output distribution characteristic of the fan, the design can obviously increase the air inlet quantity of the axis of the fan, so that the air quantity is uniformly distributed in front of the galvanic pile, the air quantity obtained by the outer edge of the galvanic pile and an air inlet channel in the center of the galvanic pile is kept consistent, in addition, the addition of the porous spoiler has a certain turbulence effect, the heat dissipation performance of the galvanic pile can be improved to a certain extent, the reasonably designed porous spoiler gives consideration to the flow distribution and the enhanced heat dissipation effect, and the performance of the air-cooled fuel cell can be obviously improved.
In order to realize the purpose, the following technical scheme is provided:
the uniform heat dissipation device for the air-cooled fuel cell comprises a fan, wherein a spoiler is arranged at an air outlet of the fan, the spoiler is a circular plate as a main body, an axle center hole is formed in the center of the circular plate, a plurality of circles of outer edge holes which are opposite to the axle center hole along the center of the circular plate are distributed on the outer side of the axle center hole, the diameter of the axle center hole is larger than that of the outer edge holes, and the diameters of the outer edge holes are sequentially reduced from the center of the circular plate to the outer edge of the circular plate.
The heat dissipation device is provided with the spoiler between the fan air outlet and the fuel cell stack, the spoiler is designed according to the air output distribution characteristic of the fan, holes are formed in the circular plate, the size of each hole is characterized in that the hole is large in axial center hole and smaller in outer edge hole from the axial center to the outer edge, the size of each hole, the distance between the porous plate and the fan and the stack can be adjusted according to the air output characteristic of the fan, the operation working condition is adjusted, the air volume meets the uniform controllable characteristic when entering the stack, and then the heat dissipation performance of the air-cooled fuel cell is improved.
Preferably, the fan is provided with a fan base and fan blades fixed on the fan base, the fan is sleeved with a flow guide pipe, and the spoiler is fixed at the pipe orifice of the flow guide pipe.
The guide pipe is arranged to enable the air blown out by the fan to be blown to the spoiler more intensively, so that the air divided by the spoiler is more uniform, and the heat dissipation performance of the air-cooled fuel cell is improved.
Preferably, the fan base is fixedly connected to an output shaft of the motor, the air inlet end of the flow guide pipe is fixedly provided with a fan frame, a bearing is arranged in the middle of the fan frame, and the output shaft is clamped in the bearing.
Preferably, the output shaft is provided with a first shaft and a second shaft which are coaxial, the diameter of the first shaft is larger than that of the second shaft, a shaft shoulder is formed on the end face of the first shaft, a flat key is embedded on the second shaft, the fan seat is provided with a clamping groove, the clamping groove is used for clamping the flat key and the second shaft, an external thread is arranged at the tail end of the second shaft, the second shaft is in threaded connection with a fixing ring, one end of the fan seat is attached to the shaft shoulder, and the other end of the fan seat is attached to the fixing ring.
Preferably, the rotating direction of the external thread of the second shaft is different from the rotating direction of the fan seat, and the end face, close to the fan seat, of the fixing ring is provided with frosted lines.
The invention aims to increase the friction force between the fixing ring and the fan seat and avoid the falling of the fixing ring when the fan rotates.
Preferably, the fan frame and the flow guide pipe are fixedly connected through screws.
Preferably, the flow guide pipe is connected with a sleeve ring, the spoiler is clamped and fixed between the pipe orifice of the flow guide pipe and the sleeve ring, the sleeve ring is provided with an inner through hole, the inner through hole and the inner cavity of the flow guide pipe are coaxial and the same in size, the edge of the surface of the sleeve ring is provided with a circle of convex ring, the convex ring surrounds an outer cavity, the inner wall of the convex ring is provided with an internal thread, the outer side of the flow guide pipe is provided with an external thread, the flow guide pipe is in threaded connection with the sleeve ring, and the diameter of the spoiler is larger than that of the inner through hole and smaller than that of the outer cavity.
The fixing mode of the spoiler is specially designed, the edge warping of the spoiler during installation is avoided, the air flow is prevented from flowing out of the edge warping of the spoiler, and the air outlet is more uniform.
The invention has the beneficial effects that: the invention realizes multiple functions by arranging the porous spoiler between the fan and the electric pile:
1. the uniformity of the air inlet amount of the galvanic pile is improved, more air enters a gas channel of the galvanic pile core, and the heat dissipation uniformity of the fuel cell is improved;
2. the addition of the perforated plate spoiler enables air to flow disorderly behind the perforated plate of the channel, disturbs air flow entering the galvanic pile, and has certain benefits for improving the cooling performance of the air-cooled fuel cell.
By integrating the beneficial effects, the high-efficiency heat dissipation performance of the air-cooled battery is realized, and the performance output and the operation stability of the battery can be improved.
Drawings
FIG. 1 is an overall sectional view of the embodiment;
fig. 2 is a schematic view of an embodiment baffle;
FIG. 3 is a schematic view of a fan case of an embodiment;
wherein: 1. the fan comprises a fan 2, a fan base 3, an output shaft 4, a motor 5, a bearing 6, a fan frame 7, a screw 8, a flow guide pipe 9, a lantern ring 10, a spoiler 11, an inner through hole 12, a flat key 13, a fixing ring 14, a shaft center hole 15 and an outer edge hole.
Detailed Description
Example (b):
referring to fig. 1 and 2, the present embodiment provides a uniform heat dissipation device for an air-cooled fuel cell, including a fan 1, a spoiler 10 is disposed at an air outlet of the fan 1, a main body of the spoiler 10 is a circular plate, a center of the circular plate is provided with an axis hole 14, a plurality of circles of outer edge holes 15 are distributed outside the axis hole 14, the outer edge holes are aligned with the center of the circular plate, a diameter of the axis hole 14 is greater than a diameter of the outer edge hole 15, and the diameters of the outer edge holes 15 are sequentially reduced from the center of the circular plate to the outer edge.
The fan 1 is provided with a fan base 2 and fan blades fixed on the fan base 2, the fan 1 is sleeved with a flow guide pipe 8, and a spoiler 10 is fixed at the pipe opening of the flow guide pipe 8.
Referring to fig. 3, the fan base 2 is fixedly connected to an output shaft 3 of the motor 4, an air inlet end of the flow guide pipe 8 is fixed with a fan frame 6, a bearing 5 is arranged in the middle of the fan frame 6, and the output shaft 3 is clamped in the bearing 5.
The rotation direction of the external thread of the second shaft is different from the rotation direction of the fan seat 2, and the end face, close to the fan seat 2, of the fixing ring 13 is provided with frosted grains.
The fan frame 6 is fixedly connected with the flow guide pipe 8 through a screw 7.
Honeycomb duct 8 is connected with the lantern ring 9, spoiler 10 card is put and is fixed between honeycomb duct 8's mouth of pipe and lantern ring 9, lantern ring 9 is equipped with interior through-hole 11, interior through-hole 11 is coaxial waiting big with honeycomb duct 8 inner chamber, 9 surperficial edges of lantern ring are equipped with the round bulge loop, the bulge loop encloses into the exocoel, the bulge loop inner wall is equipped with the internal thread, the honeycomb duct 8 outside is equipped with the external screw thread, honeycomb duct 8 and 9 threaded connection of lantern ring, spoiler 10's diameter is greater than the diameter of interior through-hole 11 and is less than the diameter of exocoel.
The principle of the invention is as follows:
in the fan working process, the air in the environment is pressed into the electric pile, the air output of the fan presents the characteristics of low axle center speed and high blade edge speed, the air quantity entering the pile core of the electric pile is reduced by the characteristics, the air quantity entering the outer edge of the electric pile is increased, the heat dissipation of the pile core is obviously insufficient, the temperature of the electric pile is difficult to control due to large temperature rise, the performance of the electric pile is reduced, and the electric pile is even damaged. The spoiler provided by the invention is arranged between the air outlet of the fan and the fuel cell stack, the design of the spoiler is designed according to the air output distribution characteristic of the fan, the perforated plate is perforated, the size of the perforated plate presents the characteristic that the axial center hole is larger and the outer edge hole is smaller, and the sizes of the perforated plate and the distance between the perforated plate and the fan and the stack are sequentially reduced from the axial center to the outer edge, the size of the perforated plate and the distance between the perforated plate and the fan and the stack can be adjusted according to the air output characteristic of the fan and the operation condition, so that the air volume meets the uniform controllable characteristic when entering the stack, and the heat dissipation performance of the air-cooled fuel cell is improved.
The heat dissipation device is provided with the spoiler 10 between the air outlet of the fan and the fuel cell stack, the spoiler 10 is designed according to the air output distribution characteristic of the fan 1, holes are formed in the circular plate, the size of each hole is larger than that of the axial center hole 6, the outer edge holes 5 are sequentially reduced from the axial center to the outer edge, the size of each hole, the distance between the porous plate and the fan and the stack can be adjusted according to the air outlet characteristic of the fan and the operation working condition, the air volume meets the uniform controllable characteristic when entering the stack, and then the heat dissipation performance of the air-cooled fuel cell is improved.
The purpose of arranging the flow guide pipe 8 is to enable the wind blown out by the fan 1 to be blown to the spoiler 10 more intensively, so that the wind split by the spoiler 10 is more uniform, and the heat dissipation performance of the air-cooled fuel cell is improved.
The invention aims to increase the friction force between the fixed ring 13 and the fan base 2 and avoid the fixed ring from falling off when the fan rotates.
The fixing mode of the spoiler 10 is specially designed, the edge warping of the spoiler 10 during installation is avoided, the air flow is prevented from flowing out of the warped edge of the spoiler 10, and the air outlet uniformity is improved.
Claims (7)
1. The utility model provides an even heat abstractor of forced air cooling fuel cell, characterized by, includes fan (1), the air outlet of fan (1) is equipped with spoiler (10), the main part of spoiler (10) is the circular slab, and its centre of a circle is equipped with axle center hole (14) it has a plurality of circles to outer fringe hole (15) to this along circular slab center to distribute in axle center hole (14) the outside, the diameter of axle center hole (14) is greater than the diameter of outer fringe hole (15), and the diameter of outer fringe hole (15) is reduced by circular slab center to the outer fringe in proper order.
2. The uniform heat dissipation device for the air-cooled fuel cell as recited in claim 1, wherein the fan (1) is provided with a fan base (2) and fan blades fixed on the fan base (2), the fan (1) is sleeved with a flow guide pipe (8), and the spoiler (10) is fixed at the opening of the flow guide pipe (8).
3. The uniform heat dissipation device for the air-cooled fuel cell as claimed in claim 2, wherein the fan base (2) is fixedly connected to the output shaft (3) of the motor (4), the air inlet end of the duct (8) is fixedly provided with a fan frame (6), a bearing (5) is arranged in the middle of the fan frame (6), and the output shaft (3) is clamped in the bearing (5).
4. The uniform heat dissipation device for the air-cooled fuel cell as recited in claim 3, wherein the output shaft (3) is provided with a first shaft and a second shaft which are coaxial, the diameter of the first shaft is larger than that of the second shaft, a shaft shoulder is formed on the end surface of the first shaft, a flat key (12) is embedded on the second shaft, the fan base (2) is provided with a clamping groove, the clamping groove is used for clamping the flat key (12) and the second shaft, the tail end of the second shaft is provided with an external thread, the second shaft is in threaded connection with a fixing ring (13), one end of the fan base (2) is tightly attached to the shaft shoulder, and the other end of the fan base is tightly attached to the fixing ring (13).
5. The uniform heat dissipation device for the air-cooled fuel cell as recited in claim 4, wherein the rotation direction of the external thread of the second shaft is different from the rotation direction of the fan seat (2), and the end face of the fixing ring (13) close to the fan seat (2) is provided with frosted lines.
6. The uniform heat dissipation device for the air-cooled fuel cell as recited in claim 3, wherein the fan frame (6) is fixedly connected with the flow guide pipe (8) through a screw (7).
7. The uniform heat dissipation device for the air-cooled fuel cell as recited in claim 2, wherein the flow guide pipe (8) is connected with a collar (9), the spoiler (10) is clamped and fixed between the pipe opening of the flow guide pipe (8) and the collar (9), the collar (9) is provided with an inner through hole (11), the inner through hole (11) is coaxial and equal in size with the inner cavity of the flow guide pipe (8), the edge of the surface of the collar (9) is provided with a circle of convex ring, the convex ring surrounds an outer cavity, the inner wall of the convex ring is provided with an inner thread, the outer side of the flow guide pipe (8) is provided with an outer thread, the flow guide pipe (8) is in threaded connection with the collar (9), and the diameter of the spoiler (10) is larger than the diameter of the inner through hole (11) and smaller than the diameter of the outer cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211357044.0A CN115939444A (en) | 2022-11-01 | 2022-11-01 | Uniform heat dissipation device for air-cooled fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211357044.0A CN115939444A (en) | 2022-11-01 | 2022-11-01 | Uniform heat dissipation device for air-cooled fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN115939444A true CN115939444A (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211357044.0A Pending CN115939444A (en) | 2022-11-01 | 2022-11-01 | Uniform heat dissipation device for air-cooled fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118099620A (en) * | 2024-04-19 | 2024-05-28 | 浙江易阳能源管理有限公司 | Partition isolation type energy storage battery box |
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2022
- 2022-11-01 CN CN202211357044.0A patent/CN115939444A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118099620A (en) * | 2024-04-19 | 2024-05-28 | 浙江易阳能源管理有限公司 | Partition isolation type energy storage battery box |
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Inventor after: Xia Qiangfeng Inventor after: Wu Weijiang Inventor after: Chen Rongwei Inventor after: Du Jiujiang Inventor after: Shen Jian Inventor after: Jin Xing Inventor after: Du Minqiang Inventor after: Zhou Yongbin Inventor after: Yao Xiaoli Inventor after: Zhu Zonglin Inventor after: Cao Chenyu Inventor after: Liu Yuqing Inventor after: Jiang Lixiang Inventor after: Yang Weili Inventor before: Xia Qiangfeng Inventor before: Jiang Lixiang Inventor before: Tu Yewei Inventor before: Yang Weili Inventor before: Wu Weijiang Inventor before: Chen Rongwei Inventor before: Du Jiujiang Inventor before: Shen Jian Inventor before: Jin Xing Inventor before: Zhao Xiaoli Inventor before: Zou Haibao Inventor before: Du Minqiang Inventor before: Deng Tao Inventor before: Zhou Yongbin Inventor before: Yao Xiaoli Inventor before: Zhu Zonglin Inventor before: Li Chuancai Inventor before: Cao Chenyu Inventor before: Liu Yuqing Inventor before: Zhou Gang |