CN217259599U - Liquid hydrogen fuel cell cold energy utilization heat exchange system and vehicle - Google Patents
Liquid hydrogen fuel cell cold energy utilization heat exchange system and vehicle Download PDFInfo
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- CN217259599U CN217259599U CN202220465954.XU CN202220465954U CN217259599U CN 217259599 U CN217259599 U CN 217259599U CN 202220465954 U CN202220465954 U CN 202220465954U CN 217259599 U CN217259599 U CN 217259599U
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- heat exchanger
- liquid hydrogen
- fuel cell
- radiator
- cold energy
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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 relates to the technical field of fuel cells, in particular to a liquid hydrogen fuel cell cold energy utilization heat exchange system and a vehicle, wherein the system comprises a first heat exchanger, a second heat exchanger, a radiator and a heat radiation fan; the first heat exchanger is positioned on the air inlet side of the radiator, the second heat exchanger is positioned on the air outlet side of the radiator, and the cooling fan is positioned between the radiator and the second heat exchanger and drives air to flow from the radiator to the second heat exchanger; the utility model discloses a set up first heat exchanger, second heat exchanger and radiator, realize the utilization of the liquid hydrogen energy, promote hydrogen fuel cell energy conversion efficiency, through the vaporization heat absorption of liquid hydrogen for the ambient temperature reduces, is located the air inlet side simultaneously, can reduce fan power.
Description
Technical Field
The utility model relates to a fuel cell technical field, concretely relates to liquid hydrogen fuel cell cold energy utilizes heat transfer system and vehicle.
Background
Currently, environmental protection has become a core subject of the sustainable development strategy of human society, so that improvement of energy utilization rate and development of alternative energy have become current main issues. The reaction product of hydrogen fuel cells is water without any pollution, so the importance of hydrogen energy sources is highlighted. Gaseous hydrogen is large in size, and meanwhile, the high-pressure hydrogen tank is adopted to transport hydrogen, so that the explosion risk exists, and liquid hydrogen can become the research direction for hydrogen energy utilization. The storage temperature of the liquid hydrogen is 20.3 Kelvin (about-253 ℃), the liquid hydrogen is required to be vaporized by heat exchange before participating in the reaction of the fuel cell, and the generated hydrogen can be converted into electric energy by the fuel cell. Because the fuel cell has the optimal working temperature range, the vaporized hydrogen can not be directly introduced into the fuel cell, and the hydrogen is subjected to heat exchange again according to the temperature change after the temperature of the hydrogen is monitored, so that the optimal temperature of the hydrogen entering the galvanic pile is ensured.
When the hydrogen fuel cell is started to work, the temperature in the system can be continuously increased, so that high requirements are provided for the power of a fan of the radiator, the radiator needs to operate at high power even at rated power for a long time, and higher requirements are provided for material selection and structural design of the radiator, reliability and durability design of the fan and the like. Liquid hydrogen can release a large amount of cold energy when using, and through the integrated optimization to liquid hydrogen vaporization heat transfer device and radiator arrange during practical application, the low temperature of make full use of liquid hydrogen vaporization heat absorption and liquid hydrogen self blows the cold wind to the heat dissipation water tank through the fan and forces the convection current heat transfer, can greatly reduced radiator water tank temperature, improves the radiator liquid-gas difference in temperature, and make full use of liquid hydrogen cold energy reduces radiator fan power.
The prior art scheme generally adopts a water bath heat exchange mode. A water bath channel is arranged in the liquid hydrogen heat exchanger, and the liquid hydrogen heat exchanger is connected with the radiator cooling liquid in series to realize the liquid hydrogen vaporization heat exchange process.
The liquid hydrogen channel is arranged in the heat exchanger, and the structure is complex after the water bath channel is added. Because liquid hydrogen temperature is very low, when setting up the internal piping, will avoid arranging the unreasonable water bath section cooling liquid temperature suddenly drop that brings and freeze the danger even, realize the degree of difficulty great.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a best entering electric pile temperature that realizes liquid hydrogen vaporization, heat transfer and adjust hydrogen is provided, realizes the utilization of liquid hydrogen cold energy simultaneously, and the liquid hydrogen fuel cell cold energy that reduces fan power utilizes heat transfer system and vehicle.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the liquid hydrogen fuel cell cold energy utilization heat exchange system comprises a first heat exchanger, a second heat exchanger, a radiator and a cooling fan;
the first heat exchanger is located on the air inlet side of the radiator, the second heat exchanger is located on the air outlet side of the radiator, and the cooling fan is located between the radiator and the second heat exchanger and drives air to flow from the radiator to the second heat exchanger.
Preferably, the liquid hydrogen fuel cell comprises a liquid hydrogen tank, a stack having a hydrogen side inlet;
the liquid hydrogen tank, the first heat exchanger, the second heat exchanger and the hydrogen side inlet are communicated in sequence.
Preferably, a pressure reducing valve is provided on the hydrogen-side inlet.
Preferably, the liquid hydrogen fuel cell cold energy utilization heat exchange system further comprises a third heat exchanger;
still be provided with the three-way valve between second heat exchanger and the hydrogen side entry, the three-way valve includes first export and second export, first export and hydrogen side entry intercommunication, second export, third heat exchanger and hydrogen side entry intercommunication.
Preferably, the stack further comprises a cooling side inlet and a cooling side outlet;
the radiator comprises a heat radiation inlet and a heat radiation outlet;
the cooling side outlet is communicated with the heat dissipation inlet, and the cooling side inlet is communicated with the heat dissipation outlet.
Preferably, the heat dissipation outlet is also communicated with the third heat exchanger and connected back to the heat dissipation inlet.
Preferably, a cooling liquid heat exchanger is arranged between the cooling side inlet and the heat dissipation outlet.
In order to solve the technical problem, the utility model discloses an another technical scheme be:
a vehicle comprises the liquid hydrogen fuel cell cold energy utilization heat exchange system.
The beneficial effects of the utility model reside in that: through setting up first heat exchanger, second heat exchanger and radiator, realize the utilization of the liquid hydrogen energy, promote hydrogen fuel cell energy conversion efficiency, through the vaporization heat absorption of liquid hydrogen for ambient temperature reduces, is located the air inlet side simultaneously, can reduce fan power.
Drawings
Fig. 1 is a schematic structural diagram of a cold energy utilization heat exchange system of a liquid hydrogen fuel cell according to an embodiment of the present invention;
description of reference numerals: 1. a liquid hydrogen tank; 2. a first heat exchanger; 3. a second heat exchanger; 4. a heat sink; 5. a heat radiation fan; 6. a coolant heat exchanger; 7. a three-way valve; 8. a third heat exchanger; 9. a galvanic pile; 10. a pressure reducing valve.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Example one
Referring to fig. 1, a cold energy utilization heat exchange system for a liquid hydrogen fuel cell includes a first heat exchanger 2, a second heat exchanger 3, a radiator 4 and a cooling fan 5;
the first heat exchanger 2 is located on the air inlet side of the radiator 4, the second heat exchanger 3 is located on the air outlet side of the radiator 4, and the cooling fan 5 is located between the radiator 4 and the second heat exchanger 3 and drives air to flow from the radiator 4 to the second heat exchanger 3.
The liquid hydrogen fuel cell comprises a liquid hydrogen tank 1 and a galvanic pile 9, wherein the galvanic pile 9 is provided with a hydrogen side inlet;
the liquid hydrogen tank 1, the first heat exchanger 2, the second heat exchanger 3 and the hydrogen side inlet are communicated in sequence.
A pressure reducing valve 10 is provided on the hydrogen-side inlet.
The liquid hydrogen fuel cell cold energy utilization heat exchange system further comprises a third heat exchanger 8;
a three-way valve 7 is further arranged between the second heat exchanger 3 and the hydrogen side inlet, the three-way valve 7 comprises a first outlet and a second outlet, the first outlet is communicated with the hydrogen side inlet, and the second outlet, the third heat exchanger 8 and the hydrogen side inlet are communicated.
The stack 9 further comprises a cooling side inlet and a cooling side outlet;
the radiator 4 comprises a heat radiation inlet and a heat radiation outlet;
the cooling side outlet is communicated with the heat dissipation inlet, and the cooling side inlet is communicated with the heat dissipation outlet.
The heat dissipation outlet is also communicated with the third heat exchanger 8 and connected back to the heat dissipation inlet.
And a cooling liquid heat exchanger 6 is arranged between the cooling side inlet and the heat dissipation outlet.
Example two
A vehicle comprising the liquid hydrogen fuel cell cold energy utilization heat exchange system of the first embodiment.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (8)
1. A cold energy utilization heat exchange system for a liquid hydrogen fuel cell is characterized by comprising a first heat exchanger, a second heat exchanger, a radiator and a cooling fan;
the first heat exchanger is located on the air inlet side of the radiator, the second heat exchanger is located on the air outlet side of the radiator, and the cooling fan is located between the radiator and the second heat exchanger and drives air to flow from the radiator to the second heat exchanger.
2. The cold energy utilization and heat exchange system of the liquid hydrogen fuel cell of claim 1, wherein the liquid hydrogen fuel cell comprises a liquid hydrogen tank, an electric stack, the electric stack having a hydrogen side inlet;
the liquid hydrogen tank, the first heat exchanger, the second heat exchanger and the hydrogen side inlet are communicated in sequence.
3. The liquid hydrogen fuel cell cold energy utilization heat exchange system according to claim 2, wherein a pressure reducing valve is provided on the hydrogen side inlet.
4. The liquid hydrogen fuel cell cold energy utilization heat exchange system of claim 2, wherein the liquid hydrogen fuel cell cold energy utilization heat exchange system further comprises a third heat exchanger;
still be provided with the three-way valve between second heat exchanger and the hydrogen side entry, the three-way valve includes first export and second export, first export and hydrogen side entry intercommunication, second export, third heat exchanger and hydrogen side entry intercommunication.
5. The liquid hydrogen fuel cell cold energy utilization heat exchange system of claim 4, wherein the stack further comprises a cool-side inlet and a cool-side outlet;
the radiator comprises a radiating inlet and a radiating outlet;
the cooling side outlet is communicated with the heat dissipation inlet, and the cooling side inlet is communicated with the heat dissipation outlet.
6. The liquid hydrogen fuel cell cold energy utilization heat exchange system of claim 5, wherein the heat dissipation outlet is further in communication with a third heat exchanger and connected back to the heat dissipation inlet.
7. The liquid hydrogen fuel cell cold energy utilization heat exchange system of claim 5, wherein a coolant heat exchanger is disposed between the cooling side inlet and the heat sink outlet.
8. A vehicle comprising the liquid hydrogen fuel cell cold energy utilization heat exchange system of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220465954.XU CN217259599U (en) | 2022-03-04 | 2022-03-04 | Liquid hydrogen fuel cell cold energy utilization heat exchange system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220465954.XU CN217259599U (en) | 2022-03-04 | 2022-03-04 | Liquid hydrogen fuel cell cold energy utilization heat exchange system and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN217259599U true CN217259599U (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220465954.XU Active CN217259599U (en) | 2022-03-04 | 2022-03-04 | Liquid hydrogen fuel cell cold energy utilization heat exchange system and vehicle |
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| CN (1) | CN217259599U (en) |
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2022
- 2022-03-04 CN CN202220465954.XU patent/CN217259599U/en active Active
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