CN120341309A - A novel air-cooled hybrid-cooled proton exchange membrane fuel cell stack based on micro heat pipe array and management method - Google Patents
A novel air-cooled hybrid-cooled proton exchange membrane fuel cell stack based on micro heat pipe array and management methodInfo
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- CN120341309A CN120341309A CN202510812600.6A CN202510812600A CN120341309A CN 120341309 A CN120341309 A CN 120341309A CN 202510812600 A CN202510812600 A CN 202510812600A CN 120341309 A CN120341309 A CN 120341309A
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- Prior art keywords
- heat pipe
- pipe array
- micro
- exchange membrane
- proton exchange
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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 invention discloses a novel air-cooling mixed cooling proton exchange membrane fuel cell stack based on a micro-heat pipe array and a management method thereof, and relates to the technical field of fuel cell thermal management. The heat dissipation device comprises a micro heat pipe array, a mixed cooling fan and a fan cover, wherein a plurality of proton exchange membrane fuel single cells and the micro heat pipe array are alternately arranged between the two end plates, the micro heat pipe array is attached to a proton exchange membrane fuel single cell part to serve as a micro heat pipe array evaporation section, the proton exchange membrane fuel single cell part extends outwards to serve as a micro heat pipe array condensation section, and the mixed cooling fan is arranged right above the micro heat pipe array and used for supplying air to the micro heat pipe array condensation section. The invention not only can realize the purpose of heat dissipation, but also can realize the rapid temperature rise and start of the electric pile in a low-temperature environment by switching the air flow direction.
Description
Technical Field
The invention relates to the technical field of fuel cell thermal management, in particular to a novel air-cooling mixed cooling type proton exchange membrane fuel cell stack based on a micro heat pipe array and a management method.
Background
The current methods for solving the problems of heat management and performance improvement of air-cooled proton exchange membrane fuel cells can be divided into three types, namely, adjusting air supply of PEMFCs, improving heat dissipation and oxidant supply of the cells by optimizing air flow, pressure and the like, thereby improving performance and heat management efficiency. Secondly, the design of the flow field of the battery is improved, and the uniform distribution of the reaction gas and the cooling air is enhanced by optimizing the structure (such as the shape, the size and the distribution of a flow channel) of the flow field, so that the thermal management and the electrochemical performance of the battery are improved. And thirdly, an external heat exchanger is added, and the heat dissipation capacity of the battery is enhanced by integrating the external heat exchanger such as fins, so that the working temperature is effectively reduced, and the overall performance is improved. However, these limitations are apparent. The first method can only control the temperature of the stack, but cannot raise the overall heat dissipation level of the stack. This method, while simple, has limited improvement in heat dissipation capacity. The second approach, while providing some improvement in stack heat dissipation and performance, can significantly increase air flow resistance within the flow channels, resulting in a relatively low stack load current density. The third thermal management approach is accompanied by additional power consuming devices resulting in an increase in parasitic power, thereby affecting the net power generation capacity of the stack. In addition, the existing air-cooled PEMFC stack does not realize preheating of the stack in a low temperature environment by means of its own fan, which makes it difficult for the stack to be rapidly started up and to reach a standard operating condition under a low temperature condition.
Therefore, a novel air-cooling hybrid cooling type proton exchange membrane fuel cell stack based on a micro-heat pipe array and a management method are provided to solve the problems of the prior art, which are the problems to be solved by the technicians in the field.
Disclosure of Invention
In view of the above, the invention provides a novel air-cooled hybrid cooling proton exchange membrane fuel cell stack based on a micro-heat tube array and a management method thereof, which not only can realize the purpose of heat dissipation, but also can realize the rapid temperature rise and start of the stack in a low-temperature environment by switching the air flow direction.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a novel air-cooled hybrid cooling proton exchange membrane fuel cell stack based on a micro-heat pipe array comprises a fuel cell stack and a heat dissipation device;
the fuel cell stack comprises two end plates, a current collecting plate and proton exchange membrane fuel single cells, wherein a heat dissipating device comprises a micro-heat pipe array, a mixed cooling fan and a fan cover, a plurality of proton exchange membrane fuel single cells and the micro-heat pipe array are alternately arranged between the two end plates, the micro-heat pipe array is attached to the proton exchange membrane fuel single cells to serve as micro-heat pipe array evaporation sections, the proton exchange membrane fuel single cells extend outwards to serve as micro-heat pipe array condensation sections, the mixed cooling fan is used for exhausting air in a bidirectional mode, and is arranged right above the micro-heat pipe array, and used for exhausting air upwards during cooling and supplying air downwards during preheating.
Optionally, the proton exchange membrane fuel single cell comprises a bipolar plate and a membrane electrode assembly, the bipolar plate comprises a cathode plate and an anode plate, the anode plate back plate is provided with an anode plate groove, and the anode plate back plate is completely attached to the micro heat pipe array.
Optionally, the micro heat pipe array is a smooth flat plate-shaped heat conductor made of integral thermal forming aluminum, a plurality of micro heat pipe array micro channels and micro fins are arranged in the micro heat pipe array, and each micro heat pipe array micro channel is filled with non-conductive liquid with the boiling point of 30-130 ℃ under normal pressure as a phase change medium.
Optionally, the cathode plate is provided with a cathode air flow passage, and the cathode air flow passage and the air flowing into the fuel cell stack are parallel to each other.
The novel air-cooling mixed cooling type proton exchange membrane fuel cell stack management method based on the micro heat pipe array is applied to any one of the novel air-cooling mixed cooling type proton exchange membrane fuel cell stacks based on the micro heat pipe array, and comprises heat dissipation management and preheating management:
the heat dissipation management comprises that a mixed cooling fan sucks air into a cathode air flow channel, so that the air flow direction is consistent with the gravity direction, the air is used as an oxidant required by the electrochemical reaction of the fuel cell stack and cools the fuel cell stack, and then the secondary cooling is carried out through a micro-heat pipe array condensing section;
The preheating management comprises the step of enabling the mixed cooling fan to work reversely, so that the air flow direction is opposite to the gravity direction, and the rapid preheating is realized.
Compared with the prior art, the novel air-cooling hybrid cooling proton exchange membrane fuel cell stack and the management method based on the micro-heat pipe array have the advantages that 1) the novel air-cooling hybrid cooling proton exchange membrane fuel cell stack does not need to be additionally provided with a fan for a micro-heat pipe array condensing section, heat dissipation of the micro-heat pipe array condensing section is coupled by utilizing air flowing out of a cathode channel, oxidant supply and heat dissipation of the novel air-cooling hybrid cooling proton exchange membrane fuel cell stack are simultaneously completed by the same group of fans, 2) the fan can provide more uniform air supply for the hybrid cooling stack, so that more uniform temperature distribution and voltage distribution are realized, and 3) the hybrid cooling stack can realize the purpose of heat dissipation and also realize rapid temperature rise and start of the stack under a low-temperature environment by switching air flow directions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a novel air-cooled hybrid cooling proton exchange membrane fuel cell stack incorporating a micro heat pipe array in accordance with the present invention;
FIG. 2 is an inside expanded view of a new generation PEM fuel cell stack of the present disclosure;
FIG. 3 is a diagram of a micro heat pipe array embedded in an anode plate tank according to the present disclosure;
FIG. 4 is a diagram of the internal structure of a micro heat pipe array according to the present disclosure;
wherein, 1 is a mixed cooling fan, 2 is a fan housing, 3 is a micro-heat pipe array, 4 is a bipolar plate, 4-1 is a cathode plate, 4-2 is an anode plate, 5 is a membrane electrode assembly, and 6 is a micro-heat pipe array micro-channel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
1-4, The invention discloses a novel air-cooling mixed cooling proton exchange membrane fuel cell stack based on a micro heat pipe array, which comprises a fuel cell stack and a heat dissipation device;
The fuel cell stack comprises two end plates, a current collecting plate and proton exchange membrane fuel single cells, the heat dissipating device comprises a micro heat pipe array 3, a mixed cooling fan 1 and a fan cover 2, a plurality of proton exchange membrane fuel single cells and the micro heat pipe array 3 are alternately arranged between the two end plates, the micro heat pipe array 3 is attached to the proton exchange membrane fuel single cells to serve as an evaporation section of the micro heat pipe array 3, the proton exchange membrane fuel single cells extend outwards to serve as a condensation section of the micro heat pipe array 3, the mixed cooling fan 1 is used for exhausting air in a bidirectional mode, is arranged right above the micro heat pipe array 3, is used for exhausting air upwards during cooling, and is used for supplying air downwards during preheating.
Furthermore, the fuel cell stack is designed to have rated power of 1 kW, and is formed by assembling 50 proton exchange membrane fuel cell single cells and 50 micro heat pipe arrays 3, the number of the mixed cooling fans 1 is 3, and the fan housing 2 is a fairing, so that the mixed cooling fans 1 can provide enough air flow in the cathode air flow channel of the cathode plate 4-1.
Further, the proton exchange membrane fuel single cell comprises a bipolar plate 4 and a membrane electrode assembly 7, the bipolar plate 4 comprises a cathode plate 4-1 and an anode plate 4-2, and an anode plate tank is arranged on the back plate of the anode plate 4-2 and is completely attached to the micro heat pipe array 3.
Further, the micro heat pipe array 3 is a smooth flat plate-shaped heat conductor made of integral thermal forming aluminum, a plurality of micro heat pipe array micro channels 6 and micro fins are arranged in the micro heat pipe array 3, the micro heat pipe array 3 has excellent compression resistance, and each micro heat pipe array micro channel 6 is filled with non-conductive liquid with the boiling point of 30-130 ℃ under normal pressure as a phase change medium.
Specifically, the length, width and thickness of the micro heat pipe array 3 are respectively 200mm, 60 mm and 2mm, 90 mm of the micro heat pipe array 3 is embedded into an anode plate tank to serve as an evaporation section of the micro heat pipe array 3, 110 mm of the micro heat pipe array 3 is exposed to air to serve as a condensation section of the micro heat pipe array 3, and the width of a micro heat pipe array microchannel 6, the width of a micro fin and the edge width are respectively 2.2 mm, 0.3 mm and 0.5 mm.
Further, the cathode plate 4-1 is provided with a cathode air flow passage, and the cathode air flow passage and the air flowing into the fuel cell stack are parallel to each other.
The novel air-cooling mixed cooling type proton exchange membrane fuel cell stack management method based on the micro heat pipe array is applied to any one of the novel air-cooling mixed cooling type proton exchange membrane fuel cell stacks based on the micro heat pipe array, and comprises heat dissipation management and preheating management:
the heat dissipation management comprises that the mixed cooling fan 1 sucks air into a cathode air flow channel, so that the air flow direction is consistent with the gravity direction, the air is used as an oxidant required by the electrochemical reaction of the fuel cell stack and cools the fuel cell stack, and then the air is continuously subjected to secondary cooling through a condensation section of the micro heat pipe array 3;
The preheating management includes operating the hybrid cooling fan 1 in reverse so that the air flow direction is opposite to the gravity direction, and rapid preheating is achieved.
In a specific embodiment, a novel air-cooled hybrid cooling proton exchange membrane fuel cell stack is started, heat is generated in the working process of the cell stack, a working medium in the evaporation section of the micro heat pipe array 3 absorbs the heat generated by the stack and evaporates to the condensation section of the micro heat pipe array 3, and a gaseous working medium is cooled to be liquid in the condensation section of the micro heat pipe array 3 and releases the heat to the outside of the stack, and then flows back to the evaporation section of the micro heat pipe array 3, so that heat transfer and heat dissipation circulation is formed. The mixed cooling fan 1 is started to suck air, the air flow direction is opposite to the gravity direction, ambient air flows into the cathode plate air flow channel under the action of the mixed cooling fan 1, a required oxidant is provided for electrochemical reaction of the novel air-cooled mixed cooling proton exchange membrane fuel cell stack, the stack is cooled first, then secondary cooling is carried out through the condensation section of the micro heat pipe array 3 continuously, and in the whole process, the air is used as both the oxidant and the coolant, so that mixed cooling is provided for the proton exchange membrane fuel cell stack. The micro heat pipe array 3 has high thermal conductivity, and the temperature of the condensing section of the micro heat pipe array 3 is almost the same as the temperature of the cell stack. Thus, the air flowing out of the cathode channels is sufficient to cool the condensing section of the micro heat pipe array 3.
In another embodiment, a novel air-cooled hybrid cooled proton exchange membrane fuel cell stack is started, and heat is generated during operation of the stack. The mixed cooling fan 1 is started, the air flowing direction is consistent with the gravity direction, and the novel air cooling mixed cooling proton exchange membrane fuel cell stack can realize self rapid preheating under the low-temperature condition, so that the performance during low-temperature starting is improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A novel air-cooled hybrid cooling proton exchange membrane fuel cell stack based on a micro-heat pipe array is characterized by comprising a fuel cell stack and a heat dissipation device;
The fuel cell stack comprises two end plates, a current collecting plate and proton exchange membrane fuel single cells, the heat radiating device comprises a micro heat pipe array (3), a mixed cooling fan (1) and a fan cover (2), a plurality of proton exchange membrane fuel single cells and the micro heat pipe array (3) are alternately arranged between the two end plates, the micro heat pipe array (3) is attached to the proton exchange membrane fuel single cells to be used as an evaporation section of the micro heat pipe array (3), the proton exchange membrane fuel single cells extend outwards to be used as a condensation section of the micro heat pipe array (3), the mixed cooling fan (1) supplies air in a bidirectional mode, is arranged right above the micro heat pipe array (3), and discharges air upwards during cooling and supplies air downwards during preheating.
2. The novel air-cooled hybrid cooling proton exchange membrane fuel cell stack based on the micro-heat pipe array as claimed in claim 1, wherein,
The proton exchange membrane fuel single cell comprises a bipolar plate (4) and a membrane electrode assembly (5), wherein the bipolar plate (4) comprises a cathode plate (4-1) and an anode plate (4-2), the anode plate (4-2) is provided with an anode plate groove, and the anode plate groove is completely attached to the micro heat pipe array (3).
3. The novel air-cooled hybrid cooling proton exchange membrane fuel cell stack based on the micro-heat pipe array as claimed in claim 1, wherein,
The micro heat pipe array (3) is a smooth flat plate-shaped heat conductor made of integral thermal forming aluminum, a plurality of micro heat pipe array micro channels (6) and micro fins are arranged in the micro heat pipe array (3), and each micro heat pipe array micro channel (6) is filled with non-conductive liquid with the boiling point of 30-130 ℃ under normal pressure as a phase change medium.
4. The novel air-cooled hybrid cooling proton exchange membrane fuel cell stack based on the micro-heat pipe array as claimed in claim 2, wherein,
The cathode plate (4-1) is provided with a cathode air flow passage, and the cathode air flow passage and the air flowing into the fuel cell stack are parallel to each other.
5. A method for managing a novel air-cooled hybrid cooling proton exchange membrane fuel cell stack based on a micro-heat pipe array, which is applied to the novel air-cooled hybrid cooling proton exchange membrane fuel cell stack based on the micro-heat pipe array as set forth in any one of claims 1 to 4, and is characterized by comprising heat dissipation management and preheating management:
The heat dissipation management comprises that a mixed cooling fan (1) sucks air into a cathode air flow channel, so that the air flow direction is consistent with the gravity direction, the air is used as an oxidant required by the electrochemical reaction of the fuel cell stack and cools the fuel cell stack, and then the secondary cooling is carried out through a condensation section of a micro heat pipe array (3);
the preheating management comprises the reverse operation of the hybrid cooling fan (1) so that the air flow direction is opposite to the gravity direction, and the rapid preheating is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510812600.6A CN120341309A (en) | 2025-06-18 | 2025-06-18 | A novel air-cooled hybrid-cooled proton exchange membrane fuel cell stack based on micro heat pipe array and management method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510812600.6A CN120341309A (en) | 2025-06-18 | 2025-06-18 | A novel air-cooled hybrid-cooled proton exchange membrane fuel cell stack based on micro heat pipe array and management method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN120341309A true CN120341309A (en) | 2025-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202510812600.6A Pending CN120341309A (en) | 2025-06-18 | 2025-06-18 | A novel air-cooled hybrid-cooled proton exchange membrane fuel cell stack based on micro heat pipe array and management method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN120341309A (en) |
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2025
- 2025-06-18 CN CN202510812600.6A patent/CN120341309A/en active Pending
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