CN111224128A - Heat dissipation system and heat dissipation method for hydrogen fuel cell - Google Patents
Heat dissipation system and heat dissipation method for hydrogen fuel cell Download PDFInfo
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- CN111224128A CN111224128A CN201811407572.6A CN201811407572A CN111224128A CN 111224128 A CN111224128 A CN 111224128A CN 201811407572 A CN201811407572 A CN 201811407572A CN 111224128 A CN111224128 A CN 111224128A
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- 239000000446 fuel Substances 0.000 title claims abstract description 288
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 215
- 239000001257 hydrogen Substances 0.000 title claims abstract description 215
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 215
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 351
- 238000003487 electrochemical reaction Methods 0.000 claims abstract description 17
- 239000002826 coolant Substances 0.000 claims description 126
- 239000007788 liquid Substances 0.000 claims description 69
- 239000007789 gas Substances 0.000 claims description 36
- 239000007921 spray Substances 0.000 claims description 18
- 238000005507 spraying Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04358—Temperature; Ambient temperature of the coolant
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The present invention provides a heat dissipation method for a hydrogen fuel cell, which includes the steps of (a) collecting water generated by an electrochemical reaction of the hydrogen fuel cell and (B) guiding the collected water to an outer surface of a heat dissipation part of a heat sink of the hydrogen fuel cell, wherein the heat dissipation method for a hydrogen fuel cell of the present invention can enhance heat dissipation of the hydrogen fuel cell by using an additional heat dissipation means, thereby maintaining the temperature of the hydrogen fuel cell within a normal temperature range.
Description
Technical Field
The present invention relates to fuel cells, and more particularly to a heat dissipation system for hydrogen fuel cells. The invention further relates to a heat dissipation method for a hydrogen fuel cell.
Background
A fuel cell is a new type of power generation device that can convert chemical energy of fuel into electrical energy. As a new energy utilization mode rapidly developed in recent years, it has been gradually brought into practical use in recent years, for example, as a power source of a motor vehicle. Fuel cells, particularly hydrogen fuel cells, have the advantages of high power generation efficiency, low environmental pollution, and the like, and are increasingly regarded as important. Accordingly, hydrogen energy is also considered as a promising alternative to conventional energy sources, such as new fuels of fossil fuels and the like.
It is well known that water and heat management are important to maintain high performance operation of fuel cells, especially hydrogen fuel cells. Hydrogen fuel cells, when used to carry out hydrogen-oxygen electrochemical reactions and to continue to supply energy, need to maintain the temperature inside the fuel cell or its fuel cell stack within a suitable temperature range. When the temperature of the hydrogen fuel cell is too high, the performance of the proton membrane of the hydrogen fuel cell, especially the proton exchange membrane fuel cell, may be severely affected, even resulting in the failure of the hydrogen fuel cell to operate. Therefore, most of the existing hydrogen fuel cells are provided with cooling devices or components, for example, the low-power hydrogen fuel cell can adopt a means of air cooling to dissipate heat, so as to ensure that the temperature of the hydrogen fuel cell is within a preset temperature range. The high-power hydrogen fuel cell can realize heat dissipation by adopting a water-cooling heat dissipation mode with higher heat dissipation efficiency. However, when the hydrogen fuel cell is actually used in an apparatus or a machine, one has not to consider the wide variety of working environments and the excessive temperature caused by an unexpected situation that the hydrogen fuel cell may be exposed to. For example, when a hydrogen fuel cell is applied to an automobile, a manufacturer of the hydrogen fuel cell cannot predict an environment in which the automobile is driven. The automobile may be subjected to high-temperature weather, or to an excessive load of the hydrogen fuel cell, or to a failure of a fan of the heat dissipation system, or the like. These conditions can result in excessive or sudden increases in the temperature of the hydrogen fuel cell and affect the operation of the hydrogen fuel cell and even the operation of the equipment or machinery in which the hydrogen fuel cell is employed. Further, when the hydrogen fuel cell is used in some special occasions, for example, when the hydrogen fuel cell is used for an aircraft, it is necessary to reduce the volume and weight of the hydrogen fuel cell as much as possible. However, the conventional hydrogen fuel cell, especially the hydrogen fuel cell using the conventional liquid cooling heat sink, has a heat sink which occupies a considerable proportion of the volume and weight of the entire hydrogen fuel cell.
Therefore, the hydrogen fuel cell needs an additional cooling means, especially a cooling means capable of rapidly cooling down the hydrogen fuel cell in a short time, to ensure that the hydrogen fuel cell can maintain normal operation even in the presence of an emergency, and even further, to reduce the volume and/or weight of the entire hydrogen fuel cell.
Disclosure of Invention
The present invention provides a heat dissipation system for a hydrogen fuel cell, wherein the heat dissipation system for a hydrogen fuel cell of the present invention can utilize a heat dissipation medium, such as water, to dissipate heat and cool a heat sink of the heat dissipation system for a hydrogen fuel cell, so as to improve the heat dissipation efficiency of the heat dissipation system for a hydrogen fuel cell and indirectly achieve the heat dissipation of the hydrogen fuel cell. It is understood that the additional mechanism for cooling the heat sink of the heat dissipation system of the hydrogen fuel cell further reduces the volume and weight of the entire hydrogen fuel cell, making it more suitable for use in an aircraft.
Another object of the present invention is to provide a heat dissipation system for a hydrogen fuel cell, wherein the heat dissipation system for a hydrogen fuel cell of the present invention is configured to enhance heat dissipation of the hydrogen fuel cell by using an additional heat dissipation means or mechanism.
Another object of the present invention is to provide a heat dissipation system for a hydrogen fuel cell, wherein the heat dissipation system for a hydrogen fuel cell of the present invention is configured to utilize water generated by an electrochemical reaction of the hydrogen fuel cell as a heat dissipation medium to achieve heat dissipation and temperature reduction of a heat sink of the heat dissipation system for a hydrogen fuel cell.
Another objective of the present invention is to provide a heat dissipation system for a hydrogen fuel cell, wherein the heat dissipation system for a hydrogen fuel cell of the present invention can utilize the heat absorption caused by the phase change of the heat dissipation medium, such as the heat absorption caused by the vaporization of liquid water, to dissipate heat and cool the heat sink of the heat dissipation system of the hydrogen fuel cell, thereby improving the heat dissipation efficiency of the heat dissipation system of the hydrogen fuel cell and enhancing the heat dissipation of the heat dissipation system to the hydrogen fuel cell.
Another object of the present invention is to provide a heat dissipation system for a hydrogen fuel cell, wherein the heat dissipation system for a hydrogen fuel cell of the present invention is configured to spray liquid water on a surface of a heat dissipation portion of a heat sink of the heat dissipation system when a temperature of the hydrogen fuel cell is too high, so as to improve a heat dissipation efficiency of the heat dissipation system of the hydrogen fuel cell and achieve rapid heat dissipation of the hydrogen fuel cell.
Another object of the present invention is to provide a heat dissipation system for a hydrogen fuel cell, wherein the water used for heat dissipation and temperature reduction of the heat dissipation system for a hydrogen fuel cell of the present invention can be obtained from collection of water generated by an electrochemical reaction of the hydrogen fuel cell.
Another object of the present invention is to provide a heat dissipation system for hydrogen fuel cells, wherein the water used for heat dissipation and temperature reduction of the heat dissipation system for hydrogen fuel cells of the present invention can also come from a water container.
Other objects and features of the present invention will become more fully apparent from the following detailed description and appended claims, taken in conjunction with the accompanying drawings, wherein like reference numerals refer to like parts throughout.
In accordance with one aspect of the present invention, the foregoing and other objects and purposes can be accomplished by the present invention by a heat dissipation system for a hydrogen fuel cell, comprising:
at least one heat sink;
at least one first coolant tube;
at least one second coolant pipe, wherein both ends of the first coolant pipe form a first liquid inlet end and a first liquid outlet end respectively, and both ends of the second coolant pipe form a second liquid inlet end and a second liquid outlet end respectively, wherein the first liquid inlet end of the first coolant pipe and the second liquid outlet end of the second coolant pipe are connected to the radiator respectively, and the first liquid outlet end of the first coolant pipe and the second liquid inlet end of the second coolant pipe are connected to the fuel cell stack of the hydrogen fuel cell respectively;
a water collector, wherein the water collector is communicated with the air outlet of the hydrogen fuel cell to collect water contained in the gas discharged from the air outlet of the hydrogen fuel cell; and
and one end of the water guide pipe is communicated with the water collector, and the other end of the water guide pipe is arranged to be opposite to the outer surface of the heat dissipation part of the radiator.
According to another aspect of the present invention, the present invention further provides a heat dissipation system for a hydrogen fuel cell, comprising:
at least one heat sink;
at least one first coolant tube;
at least one second coolant pipe, wherein both ends of the first coolant pipe form a first liquid inlet end and a first liquid outlet end respectively, and both ends of the second coolant pipe form a second liquid inlet end and a second liquid outlet end respectively, wherein the first liquid inlet end of the first coolant pipe and the second liquid outlet end of the second coolant pipe are connected to the radiator respectively, and the first liquid outlet end of the first coolant pipe and the second liquid inlet end of the second coolant pipe are connected to the fuel cell stack of the hydrogen fuel cell respectively;
a water collector, wherein the water collector is communicated with the air outlet of the hydrogen fuel cell to collect water contained in the gas discharged from the air outlet of the hydrogen fuel cell; and
a first water guide tube;
a second water guide tube;
a water container; and
a water valve, wherein one end of the first water guide pipe is communicated with the water collector, the other end of the first water guide pipe is communicated with the water container, one end of the second water guide pipe is communicated with the water container, the other end of the second water guide pipe is arranged to be opposite to the outer surface of the heat dissipation part of the radiator, and the water valve is arranged on the second water guide pipe to control the flow of water in the second water guide pipe.
In another aspect of the present invention, the present invention further provides a heat dissipation method for a hydrogen fuel cell, comprising the steps of:
(A) collecting water produced by the electrochemical reaction of the hydrogen fuel cell; and
(B) the collected water is guided to flow to the outer surface of the heat radiating portion of the radiator of the hydrogen fuel cell.
In another aspect of the present invention, the present invention further provides a heat dissipation method for a hydrogen fuel cell, wherein the hydrogen fuel cell has a heat sink, comprising the steps of:
(A) detecting the temperature of the gas discharged from the air outlet of the hydrogen fuel cell; and
(B) and if the temperature of the gas discharged from the air exhaust port of the hydrogen fuel cell is higher than a preset temperature, spraying a proper amount of water on the outer surface of the heat dissipation part of the heat radiator of the hydrogen fuel cell.
In another aspect of the present invention, the present invention further provides a heat dissipation method for a hydrogen fuel cell, wherein the hydrogen fuel cell has a heat sink, comprising the steps of:
(A) detecting a temperature of coolant flowing out from the fuel cell stack; and
(B) if the temperature of the coolant flowing out of the fuel cell stack is higher than a preset temperature, a proper amount of water is sprayed on the outer surface of the heat dissipation part of the heat sink of the hydrogen fuel cell.
Further objects and purposes of the present invention will become more fully apparent from the ensuing description and the accompanying drawings.
These and other objects, features and objects of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.
Drawings
Fig. 1 is a schematic structural view of an exemplary hydrogen fuel cell employing the heat dissipation system for a hydrogen fuel cell according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of an alternative implementation of an exemplary heat removal system for a hydrogen fuel cell in accordance with a preferred embodiment of the present invention.
Fig. 3 is a schematic diagram of another alternative implementation of an exemplary heat removal system for a hydrogen fuel cell in accordance with a preferred embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an exemplary control device for a heat dissipation system of a hydrogen fuel cell in accordance with a preferred embodiment of the present invention.
Fig. 5 is a schematic flow diagram of an exemplary heat dissipation method for a hydrogen fuel cell in accordance with a preferred embodiment of the present invention.
Fig. 6 is a schematic flow diagram of an alternative implementation of an exemplary heat dissipation method for a hydrogen fuel cell in accordance with a preferred embodiment of the present invention.
Fig. 7 is a schematic flow diagram of an alternative implementation of an exemplary heat dissipation method for a hydrogen fuel cell in accordance with a preferred embodiment of the present invention.
Fig. 8 is a flowchart illustrating an exemplary drain control method for a heat dissipation system of a hydrogen fuel cell in accordance with a preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1, 2, 4 through 8 of the drawings, an exemplary hydrogen fuel cell according to a preferred embodiment of the present invention is illustrated, wherein the hydrogen fuel cell includes a fuel cell stack 10 and a heat dissipation system 20 for dissipating heat from the fuel cell stack 10.
As shown in fig. 1, 2, 4 to 8 of the drawings, an exemplary heat dissipation system 20 for a hydrogen fuel cell according to a preferred embodiment of the present invention includes at least one heat sink 21, at least one first coolant pipe 22 and at least one second coolant pipe 23, wherein both ends of the first coolant pipe 22 respectively form a first liquid inlet end 221 and a first liquid outlet end 222, and both ends of the second coolant pipe 23 respectively form a second liquid inlet end 231 and a second liquid outlet end 232, wherein the first liquid inlet end 221 of the first coolant pipe 22 and the second liquid outlet end 232 of the second coolant pipe 23 are respectively connected to the heat sink 21, the first liquid outlet end 222 of the first coolant pipe 22 and the second liquid inlet end 231 of the second coolant pipe 23 are respectively connected to the fuel cell stack 10 of the hydrogen fuel cell, so that the coolant can flow out of the heat sink 21, and then flows back to the radiator 21 along the first coolant pipe 22, the fuel cell stack 10, and the second coolant pipe 23, thereby cooling the fuel cell stack 10 of the hydrogen fuel cell. In other words, the radiator 21, the first coolant pipe 22, the fuel cell stack 10 and the second coolant pipe 23 form a cooling or heat radiation loop, and the coolant flowing between the radiator 21 and the fuel cell stack 10 flows into the coolant flow channel formed by the plates of the fuel cell stack 10 through the first liquid outlet end 222 of the first coolant pipe 22, then flows into the second liquid inlet end 231 of the second coolant pipe 23 from the plates of the fuel cell stack 10, flows into the radiator 21 through the second liquid outlet end 232 of the second coolant pipe 23, and then flows out of the radiator 21 and into the first liquid inlet end 221 of the first coolant pipe 22, thereby completing a heat radiation cooling cycle. The first coolant pipe 22 and the second coolant pipe 23 of the heat dissipation system 20 for a hydrogen fuel cell according to the example embodiment of the invention may have a pipe shape, or may have any other shape that allows a coolant therein to smoothly flow. In other words, the shape of the first coolant pipe 22 and the second coolant pipe 23 of the heat dissipation system 20 does not constitute a limitation of the present invention. In addition, the first coolant pipe 22 and the second coolant pipe 23 are preferably made of a non-metallic material. It is to be understood that the coolant herein is a fluid so that it can flow smoothly in the heat dissipation circuit. Preferably, the coolant herein is a liquid coolant, such as water. The coolant herein may also be other liquid heat transfer media suitable for heat transfer.
As shown in fig. 1, 2, 4 to 8 of the drawings, the fuel cell stack 10 of the exemplary hydrogen fuel cell according to the preferred embodiment of the present invention forms a coolant inlet 11 and a coolant outlet 12, wherein the first liquid outlet end 222 of the first coolant pipe 22 is disposed to communicate with the coolant inlet 11 of the fuel cell stack 10, and the second liquid inlet end 231 of the second coolant pipe 23 is disposed to communicate with the coolant outlet 12 of the fuel cell stack 10.
As shown in fig. 1, 2, 4 to 8 of the drawings, the exemplary heat dissipation system 20 for a hydrogen fuel cell according to the preferred embodiment of the present invention further includes a water guide pipe 24, wherein one end of the water guide pipe 24 is connected to a water source and the other end is disposed to face the outer surface of the heat dissipation portion 211 of the heat sink 21. It is to be understood that the water source may be formed from a water collector 25A, wherein the water collector 25A serves to collect the water it contains from the gas discharged from the air discharge port of the hydrogen fuel cell (or the fuel cell stack 10 thereof). The water source may also be formed from a water container 25B. In other words, the water source may be formed by the water collector 25A and/or the water container 25B. Therefore, the water guided to the outer surface of the heat radiating portion 211 of the radiator 21 of the heat radiating system 20 through the water guide pipe 24 may be derived from the water container 25B, such as a water tank, and may also be formed through the electrochemical reaction of the hydrogen fuel cell of the present invention. Accordingly, when water is guided to flow through the outer surface of the heat dissipating part 211 of the heat sink 21 or sprayed on the outer surface of the heat dissipating part 211 of the heat sink 21, the water is volatilized from a liquid state to a gaseous state under the high temperature action of the heat dissipating part 211 of the heat sink 21 or the action of the fan of the heat dissipating system 20, thereby achieving cooling of the heat sink 21 of the heat dissipating system 20 and improving the heat dissipating efficiency of the heat sink 21. Preferably, in order to guide water to flow through the outer surface of the heat dissipating part 211 of the heat sink 21 or to be sprayed on the outer surface of the heat dissipating part 211 of the heat sink 21, the outer surface of the heat dissipating part 211 of the heat sink 21 is provided with a water groove or a groove.
It should be noted that, when the water guided to flow to the outer surface of the heat dissipating part 211 of the heat dissipating system 21 of the heat dissipating system 20 through the water guiding pipe 24 is from the electrochemical reaction of the hydrogen fuel cell of the present invention, the water of the electrochemical reaction of the hydrogen fuel cell of the present invention may be collected and guided to flow directly to the outer surface of the heat dissipating part 211 of the heat dissipating system 21 of the heat dissipating system 20 for cooling the heat dissipating system 21 of the heat dissipating system 20. However, the water of the electrochemical reaction of the hydrogen fuel cell of the present invention may be collected into a water container, for example, the water container 25B, and then guided to flow toward the outer surface of the heat radiating portion 211 of the heat radiator 21 of the heat radiating system 20 as needed. Generally, when water generated by the electrochemical reaction of the fuel cell stack 10 of the hydrogen fuel cell of the present invention is discharged through the air discharge port of the hydrogen fuel cell, the water may be carried in a gaseous state (or may be in a liquid state) by the corresponding gas discharged from the air discharge port of the hydrogen fuel cell. Therefore, when the water collector 25A collects water generated by the electrochemical reaction of the fuel cell stack 10, the water needs to be separated first, particularly from the corresponding gas discharged from the air discharge port of the hydrogen fuel cell. The water produced by the electrochemical reactions of the fuel cell stack 10 may be separated and collected by condensation, by special filtration membranes, or by other suitable means or mechanisms. Accordingly, the water collector 25A of the present invention may be a condenser for collecting water by condensation, such as a metal tube condenser, or may be a filter membrane structure for allowing only air molecules to pass through, or other structures for facilitating separation and collection of water. The water generated by the electrochemical reaction of the fuel cell stack 10 of the hydrogen fuel cell of the present invention may be further collected after being separated from the air and guided to the outer surface of the heat radiating portion 211 of the heat radiator 21 of the heat radiating system 20. Preferably, the heat sink 21 of the heat dissipation system 20 is a finned heat sink, which includes one or more heat sinks or fins for dissipating heat. Accordingly, the fins or fins of the heat sink 21 form the outer surface of the heat dissipation portion 211 of the heat sink 21. However, the heat sink 21 herein may be other types of heat sinks.
As shown in fig. 1, 2, 4-8 of the drawings, the exemplary heat dissipation system 20 for a hydrogen fuel cell according to the preferred embodiment of the present invention further includes a water valve 26A, wherein the water valve 26A is disposed in the water guide pipe 24 to control the flow of water in the water guide pipe 24. For example, the water valve 26A may be configured such that when it is opened, water collected by the water collector 25A is directed to flow directly to the outer surface of the heat dissipating portion 211 of the heat sink 21 of the heat dissipating system 20; when the water valve 26A is closed, the water collected by the water collector 25A stops flowing to the radiator 21 of the heat dissipation system 20.
As shown in fig. 1, 2, 4-8 of the drawings, the exemplary heat dissipation system 20 for a hydrogen fuel cell according to the preferred embodiment of the present invention further includes a temperature sensor 27 and a control module 28, wherein the control module 28 is configured to communicatively couple with the temperature sensor 27 and the water valve 26A, wherein the temperature sensor 27 is disposed at the second inlet end 231 of the second coolant pipe 23 (or the coolant outlet 12 of the fuel cell stack 10), to detect the temperature of the coolant flowing out of the fuel cell stack 10, wherein the control module 28 is configured to control the water valve 26A to be opened when the temperature of the coolant flowing out of the fuel cell stack 10, detected by the temperature sensor 27, is higher than a preset temperature T1, so that water can be guided toward the outer surface of the heat radiating portion 211 of the heat radiator 21 of the heat radiating system 20. Subsequently, the water is guided to flow over the outer surface of the heat dissipating portion 211 of the heat sink 21, or sprayed to the outer surface of the heat dissipating portion 211 of the heat sink 21, thereby indirectly enhancing the cooling of the fuel cell stack 10 by cooling the heat sink 21. If the temperature of the coolant flowing out of the fuel cell stack 10 detected by the temperature sensor 27 is not higher than the preset temperature T1, the water valve 26A may be controlled to be closed to stop guiding the water to flow through the outer surface of the heat radiating portion 211 of the heat radiator 21 or to stop spraying the water to the outer surface of the heat radiating portion 211 of the heat radiator 21. Preferably, in order to guide water to flow through the outer surface of the heat dissipating part 211 of the heat sink 21 or to be sprayed on the outer surface of the heat dissipating part 211 of the heat sink 21, the outer surface of the heat dissipating part 211 of the heat sink 21 is provided with a water groove or a groove. It is understood that water is pressurized by a pressurizing pump 31 and sprayed on the outer surface of the heat radiating portion 211 of the heat sink 21 through a spray head 32.
It is noted that the control module 28 of the present invention may also be configured to control the opening and closing of the water valve 26A based on the temperature of the gas exiting the air outlet of the hydrogen fuel cell. For example, the temperature sensor 27 may be disposed facing the air outlet of the hydrogen fuel cell to detect the temperature of the gas discharged from the air outlet of the hydrogen fuel cell. When the temperature sensor 27 detects that the temperature of the gas discharged from the air outlet of the hydrogen fuel cell is higher than another preset temperature T, the water valve 26A is controlled to be opened, so that the water collected by the water collector 25A can be guided to flow toward the outer surface of the heat radiating portion 211 of the heat radiator 21 of the heat radiating system 20. If the temperature of the gas discharged from the air outlet of the hydrogen fuel cell detected by the temperature sensor 27 is not higher than the preset temperature T, the water valve 26A may be controlled to be closed to stop guiding the water to flow through the outer surface of the heat dissipating part 211 of the heat sink 21 or to stop spraying the water to the outer surface of the heat dissipating part 211 of the heat sink 21.
It will be understood that the coolant temperature of the heat dissipation system of the hydrogen fuel cell of the present invention and the temperature of the air discharged from the air outlet may indirectly reflect the temperature of the fuel cell stack 10 of the hydrogen fuel cell. Accordingly, the preset temperature T1 corresponding to the coolant temperature and the preset temperature T corresponding to the temperature of the air discharged from the air discharge port may be set or configured by the manufacturer or the user in accordance with the hydrogen fuel cell.
Alternatively, the control module 28 of the present invention may be configured to control the opening and closing of the water valve 26A according to the temperature of the water collected by the water collector 25A. For example, the temperature sensor 27 is disposed at the water collector 25A to detect the temperature of the water collected by the water collector 25A, and the control module 28 is disposed to be communicably connected with the temperature sensor 27 and the water valve 26A, respectively, wherein the control module 28 is configured to control the water valve 26A to be opened when the temperature of the water collected by the water collector 25A detected by the temperature sensor 27 is higher than a preset water temperature, so that the water collected by the water collector 25A can be guided to the outer surface of the heat dissipating part 211 of the heat sink 21 of the heat dissipating system 20. Accordingly, the water valve 26A is configured to be opened and enable the water collected by the water collector 25A to be directed to flow directly to the outer surface of the heat radiating portion 211 of the heat radiator 21 of the heat radiating system 20 when the water temperature of the water collected by the water collector 25A is higher than a preset water temperature. On the contrary, when the water temperature of the water collected by the water collector 25A is lower than the preset water temperature, the fuel cell stack 10 of the hydrogen fuel cell of the present invention operates at the normal temperature with a high probability, and only the heat dissipation of the heat sink 21 of the heat dissipation system 20 of the hydrogen fuel cell is required to maintain the temperature of the fuel cell stack 10 of the hydrogen fuel cell of the present invention within the normal temperature range, and no additional heat dissipation means is required to enhance the heat dissipation. In other words, if the temperature of the water collected by the water collector 25A detected by the temperature sensor 27 is not higher than the preset water temperature, the water valve 26A may be controlled to be closed to stop guiding the water to flow through the outer surface of the heat dissipating part 211 of the heat sink 21 or to stop spraying the water to the outer surface of the heat dissipating part 211 of the heat sink 21.
As shown in fig. 1, 2, 4-8 of the drawings, the present invention further provides an alternative implementation of a heat dissipation system 20 for a hydrogen fuel cell according to a preferred embodiment of the present invention, wherein the heat dissipation system 20 comprises at least one heat dissipater 21, at least one first coolant pipe 22, at least one second coolant pipe 23, a first water guiding pipe 24A, a water collector 25A, a water container 25B, a water valve 26A and a second water guiding pipe 29A, wherein two ends of the first coolant pipe 22 respectively form a first liquid inlet end 221 and a first liquid outlet end 222, two ends of the second coolant pipe 23 respectively form a second liquid inlet end 231 and a second liquid outlet end 232, wherein the first liquid inlet end 221 of the first coolant pipe 22 and the second liquid outlet end 232 of the second coolant pipe 23 are respectively connected to the heat dissipater 21, the first liquid outlet end 222 of the first coolant pipe 22 and the second liquid inlet end 231 of the second coolant pipe 23 are respectively connected to the fuel cell stack 10 of the hydrogen fuel cell, the water collector 25A communicates with the air outlet of the hydrogen fuel cell to collect water contained in the gas discharged from the air outlet of the hydrogen fuel cell, one end of the first water guide pipe 24A communicates with the water collector 25A, the other end of the first water guide pipe 24A communicates with the water container 23, one end of the second water guide pipe 29A communicates with the water container 23, the other end of the second water guide pipe 29A is disposed to face the outer surface of the heat radiating portion 211 of the radiator 21, and the water valve 26A is disposed in the second water guide pipe 29A to control the flow of water in the second water guide pipe 24A. It can be understood that the water generated by the electrochemical reaction of the fuel cell stack 10 of the hydrogen fuel cell of the present invention, after being separated from the air and collected, flows into the water tank 25B through the first water guide pipe 24A and is stored in the water tank 25B, and then is guided to flow directly to, or to be guided to flow to, the outer surface of the heat radiating portion 211 of the heat radiator 21 of the heat radiating system 20 as needed, for cooling the heat radiator 21 of the heat radiating system 20.
As shown in fig. 1, 2, 4-8 of the drawings, the exemplary heat dissipation system 20 for a hydrogen fuel cell according to the preferred embodiment of the present invention further includes a temperature sensor 27 and a control module 28, wherein the control module 28 is configured to communicatively couple with the temperature sensor 27 and the water valve 26A, wherein the temperature sensor 27 is disposed at the second inlet end 231 of the second coolant pipe 23 (or the coolant outlet 12 of the fuel cell stack 10), to detect the temperature of the coolant flowing out of the fuel cell stack 10, wherein the control module 28 is configured to control the water valve 26A to be opened when the temperature of the coolant flowing out of the fuel cell stack 10, detected by the temperature sensor 27, is higher than a preset temperature T1, so that the water stored in the water container 25B can be guided to flow toward the outer surface of the heat radiating portion 211 of the heat radiator 21 of the heat radiating system 20 through the second water guide pipe 29A. Subsequently, the water is guided to flow over the outer surface of the heat dissipating portion 211 of the heat sink 21, or sprayed to the outer surface of the heat dissipating portion 211 of the heat sink 21, thereby indirectly enhancing the cooling of the fuel cell stack 10 by cooling the heat sink 21.
It is noted that the control module 28 may also be configured to control the opening and closing of the water valve 26A based on the temperature of the gas exiting the air outlet of the hydrogen fuel cell. For example, the temperature sensor 27 may be disposed facing the air outlet of the hydrogen fuel cell to detect the temperature of the gas discharged from the air outlet of the hydrogen fuel cell. When the temperature sensor 27 detects that the temperature of the gas discharged from the air outlet of the hydrogen fuel cell is higher than another preset temperature T, the water valve 26A is controlled to be opened, so that the water stored in the water container 25B can be guided to flow to the outer surface of the heat radiating portion 211 of the heat radiator 21 of the heat radiating system 20 by the second water guide pipe 29A.
Alternatively, the control module 28 of the present invention may be configured to control the opening and closing of the water valve 26A according to the temperature of the water collected by the water collector 25A. For example, the temperature sensor 27 is disposed at the water collector 25A to detect the temperature of the water collected by the water collector 25A, and the control module 28 is disposed to be communicably connected with the temperature sensor 27 and the water valve 26A, respectively, wherein the control module 28 is configured to control the water valve 26A to be opened when the temperature of the water collected by the water collector 25A detected by the temperature sensor 27 is higher than a preset water temperature, so that the water stored in the water container 25B can be guided to the outer surface of the heat dissipating part 211 of the heat sink 21 of the heat dissipating system 20 by the second water guide pipe 29A.
As shown in fig. 1, 2, 4 to 8 of the drawings, the exemplary heat dissipation system 20 for a hydrogen fuel cell according to the preferred embodiment of the present invention may further include a pressure pump 31 and a spray head 32, wherein the pressure pump 31 has a water inlet 301 and a water outlet 302, wherein the water inlet 301 of the pressure pump 31 is communicated with the second water guiding pipe 29A, the water outlet 302 of the pressure pump 31 is communicated with the spray head 32, wherein the spray head 32 (or a water spray hole thereof) is disposed opposite to an outer surface of the heat dissipation portion 211 of the heat sink 21 of the hydrogen fuel cell, wherein the pressure pump 31 is communicatively connected with the control module 28, wherein the control module 28 is configured to control the pressure pump 31 to be turned on when the temperature of the coolant flowing out from the fuel cell stack 10 detected by the temperature sensor 27 is higher than a preset temperature T1, so that the water stored in the water tank 25B can be guided to flow to the radiator 21 of the hydrogen fuel cell through the second water guide pipe 29A, and is pressurized by the pressurizing pump 31 and then sprayed on the outer surface of the radiator 21 of the hydrogen fuel cell through the shower head 32. Alternatively, the control module 28 is configured to control the pressurizing pump 31 to be turned on when the temperature of the gas discharged from the air outlet of the hydrogen fuel cell detected by the temperature sensor 27 is higher than a preset temperature T, so that the water stored in the water container 25B can be guided to flow to the radiator 21 of the hydrogen fuel cell through the second water guide pipe 29A, and sprayed on the outer surface of the radiator 21 of the hydrogen fuel cell through the spray head 32 after being pressurized by the pressurizing pump 31.
As shown in fig. 1, 2, 4 to 8 of the drawings, the exemplary heat dissipation system 20 for a hydrogen fuel cell according to the preferred embodiment of the present invention further includes a pressure sensor 40 and a drain valve 26B, wherein the pressure sensor 40 and the drain valve 26B are electrically connected (or communicatively connected) to the control module 28, respectively, wherein the pressure sensor 40 is configured to detect the water pressure of the water guide pipe 24 (or the second water guide pipe 29A), and when the detected water pressure is higher than a predetermined water pressure, the drain valve 26B is controlled to open to discharge an appropriate amount of water, so as to prevent the water pressure of the water guide pipe 24 from being too high to affect the operation of the water collector 25A and the exhaust of the fuel cell stack 10. Therefore, when the hydrogen fuel cell of the present invention (or the fuel cell stack 10 thereof) is started up and starts to operate, the temperature sensor 27 of the heat dissipation system 20 is activated to detect the temperature of the gas discharged from the exhaust port of the fuel cell stack 10 and/or the temperature of the coolant flowing out from the fuel cell stack 10 to monitor whether the temperature of the fuel cell stack 10 is within the preset temperature range. In addition, the heat dissipation system 20 for a hydrogen fuel cell of the present invention further provides a control means for controlling the operations of the water valve 26A, the drain valve 26B and the pressurizing pump 31 and the enhanced heat dissipation to the radiator 21 according to the results detected by the temperature sensor 28 and the pressure sensor 40.
Fig. 3 of the accompanying drawings shows another alternative implementation of the exemplary heat dissipation system 20 for a hydrogen fuel cell according to the preferred embodiment of the present invention, wherein the heat dissipation system 20B includes at least one heat sink 21, at least one first coolant pipe 22, at least one second coolant pipe 23, a first water guide pipe 24B, a water tank 25B, and a water valve 26A, wherein two ends of the first coolant pipe 22 respectively form a first liquid inlet end 221 and a first liquid outlet end 222, two ends of the second coolant pipe 23 respectively form a second liquid inlet end 231 and a second liquid outlet end 232, wherein the first liquid inlet end 221 of the first coolant pipe 22 and the second liquid outlet end 232 of the second coolant pipe 23 are respectively connected to the heat sink 21, the first liquid outlet end 222 of the first coolant pipe 22 and the second liquid inlet end 231 of the second coolant pipe 23 are respectively connected to the fuel cell stack 10 of the hydrogen fuel cell, one end of the first water guide pipe 24B is communicated with the water container 25B, the other end of the first water guide pipe 24B is disposed to face the outer surface of the heat dissipating part 211 of the radiator 21, and the water valve 26A is disposed in the first water guide pipe 24B to control the flow of water in the first water guide pipe 24B. It is understood that the water container 25B stores water and may be guided to flow directly to the outer surface of the heat dissipating part 211 of the heat dissipating system 21 of the heat dissipating system 20 or, as needed, to flow through the first water guiding pipe 24B for cooling the heat dissipating part 21 of the heat dissipating system 20. The water stored in the water container 25B may also be directed to flow directly, or, as needed, to the outer surface of the heat dissipating part 211 of the heat sink 21 of the heat dissipating system 20 through the first water guiding pipe 24B by the control of the water valve 26A. Preferably, the water valve 26A of the heat dissipation system 20B is also controlled to open or close by a control module 28 based on the temperature of the gas exiting the air outlet of the hydrogen fuel cell as detected by a temperature sensor 27. Alternatively, the water valve 26A of the heat dissipation system 20B may be controlled by the control module 28 to open or close according to the temperature of the coolant flowing out of the fuel cell stack 10 detected by the temperature sensor 27. Alternatively, the water valve 26A of the heat dissipation system 20B can be controlled by the control module 28 to open or close according to the temperature of the water collected by the water collector 25A detected by the temperature sensor 27.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention.
The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (33)
1. A heat dissipation method for a hydrogen fuel cell, characterized by comprising the steps of:
(A) collecting water produced by the electrochemical reaction of the hydrogen fuel cell; and
(B) the collected water is guided to flow to the outer surface of the heat radiating portion of the radiator of the hydrogen fuel cell.
2. The heat dissipating method of claim 1, wherein the step (a) comprises the steps of:
(A1) separating water produced by an electrochemical reaction of the hydrogen fuel cell from gas discharged from an air discharge port of the hydrogen fuel cell; and
(A2) collecting the separated water generated by the electrochemical reaction of the hydrogen fuel cell.
3. The method for dissipating heat according to claim 1, further comprising the steps of:
(C) storing the collected water in a water container, wherein the step (C) is located after the step (A) and before the step (B).
4. The method for dissipating heat according to claim 2, further comprising the steps of:
(C) storing the collected water in a water container, wherein the step (C) is located after the step (A) and before the step (B).
5. The heat dissipating method of claim 1, wherein the step (B) comprises the steps of:
(B1) detecting a temperature of coolant flowing out from the fuel cell stack; and
(B2) when the temperature of the coolant is higher than a preset temperature T1, the collected water is directed toward the outer surface of the heat radiating portion of the heat sink of the hydrogen fuel cell.
6. The heat dissipating method of claim 3, wherein the step (B) comprises the steps of:
(B1) detecting a temperature of coolant flowing out from the fuel cell stack; and
(B2) when the temperature of the coolant is higher than a preset temperature T1, the collected water is directed toward the outer surface of the heat radiating portion of the heat sink of the hydrogen fuel cell.
7. The heat dissipating method of claim 1, wherein the step (B) comprises the steps of:
(B1) detecting a temperature of coolant flowing out from the fuel cell stack; and
(B2) when the temperature of the coolant is higher than a preset temperature T1, the collected water is guided to flow toward the outer surface of the heat radiating portion of the heat sink of the hydrogen fuel cell and sprayed over the outer surface of the heat radiating portion of the heat sink of the hydrogen fuel cell.
8. The heat dissipating method of claim 3, wherein the step (B) comprises the steps of:
(B1) detecting a temperature of coolant flowing out from the fuel cell stack; and
(B2) when the temperature of the coolant is higher than a preset temperature T1, the water stored in the water container is directed to the radiator of the hydrogen fuel cell and sprayed on the outer surface of the heat radiating portion of the radiator of the hydrogen fuel cell.
9. The heat dissipating method of claim 2, wherein the step (B) comprises the steps of:
(B1) detecting the temperature of the gas discharged from the air outlet of the hydrogen fuel cell; and
(B2) when the temperature of the exhaust gas is higher than a preset temperature T, the collected water is guided to flow to the outer surface of the heat radiating portion of the heat radiator of the hydrogen fuel cell.
10. The heat dissipating method of claim 4, wherein the step (B) comprises the steps of:
(B1) detecting the temperature of the gas discharged from the air outlet of the hydrogen fuel cell; and
(B2) when the temperature of the exhaust gas is higher than a preset temperature T, water stored in the water container is guided to flow to the outer surface of the heat radiating portion of the radiator of the hydrogen fuel cell.
11. The heat dissipating method of claim 2, wherein the step (B) comprises the steps of:
(B1) detecting the temperature of the gas discharged from the air outlet of the hydrogen fuel cell; and
(B2) and spraying the collected water on the outer surface of the heat dissipation part of the heat sink of the hydrogen fuel cell when the temperature of the exhaust gas is higher than a preset temperature T.
12. The heat dissipating method of claim 4, wherein the step (B) comprises the steps of:
(B1) detecting the temperature of the gas discharged from the air outlet of the hydrogen fuel cell; and
(B2) and when the temperature of the exhaust gas is higher than a preset temperature T, guiding the water stored in the water container to flow to the radiator of the hydrogen fuel cell and spraying the water on the outer surface of the radiating part of the radiator of the hydrogen fuel cell.
13. The heat dissipating method of claim 1, wherein the step (B) comprises the steps of:
(B1) detecting the temperature of the collected water; and
(B2) when the temperature of the collected water is higher than a preset temperature value, the collected water is guided to flow to the outer surface of the heat dissipation part of the radiator of the hydrogen fuel cell.
14. The heat dissipating method of claim 3, wherein the step (B) comprises the steps of:
(B1) detecting the temperature of the collected water; and
(B2) and guiding the water stored in the water container to flow to the outer surface of the heat radiating part of the heat radiator of the hydrogen fuel cell when the temperature of the collected water is higher than a preset temperature value.
15. A heat dissipation system for a hydrogen fuel cell, comprising:
at least one heat sink;
at least one first coolant tube;
at least one second coolant pipe, wherein both ends of the first coolant pipe form a first liquid inlet end and a first liquid outlet end respectively, and both ends of the second coolant pipe form a second liquid inlet end and a second liquid outlet end respectively, wherein the first liquid inlet end of the first coolant pipe and the second liquid outlet end of the second coolant pipe are connected to the radiator respectively, and the first liquid outlet end of the first coolant pipe and the second liquid inlet end of the second coolant pipe are connected to the fuel cell stack of the hydrogen fuel cell respectively;
a water collector, wherein the water collector is communicated with the air outlet of the hydrogen fuel cell to collect water contained in the gas discharged from the air outlet of the hydrogen fuel cell; and
and one end of the water guide pipe is communicated with the water collector, and the other end of the water guide pipe is arranged to be opposite to the outer surface of the heat dissipation part of the radiator.
16. The heat dissipating system of claim 15, further comprising a water valve, wherein the water valve is disposed in the water guide tube to control the flow of water in the water guide tube.
17. The heat dissipation system of claim 16, wherein the water valve is configured to be opened and to enable water collected by the water collector to be directed to flow to an outer surface of the heat dissipation portion of the heat sink of the hydrogen fuel cell when the temperature of the coolant flowing from the fuel cell stack is higher than a preset temperature T1.
18. The heat dissipation system of claim 16, wherein the water valve is configured to be opened and to enable water collected by the water collector to be directed to flow to an outer surface of the heat dissipation portion of the heat sink of the hydrogen fuel cell when the temperature of the gas discharged from the air discharge port of the hydrogen fuel cell is higher than a preset temperature T.
19. The heat removal system of claim 17, further comprising a temperature sensor disposed at the second inlet end of the second coolant tube for detecting a temperature of the coolant flowing out of the fuel cell stack, and a control module disposed in communication with the temperature sensor and the water valve, respectively, wherein the control module is configured to control the water valve to open when the temperature sensor detects a temperature of the coolant flowing out of the fuel cell stack that is higher than a predetermined temperature T1, so that the water collected by the water collector can be directed to an outer surface of the heat sink portion of the heat sink of the hydrogen fuel cell.
20. The heat dissipation system of claim 17, further comprising a temperature sensor disposed at a coolant outlet of the fuel cell stack to detect a temperature of the coolant flowing out of the fuel cell stack, and a control module disposed to be communicatively coupled to the temperature sensor and the water valve, respectively, wherein the control module is configured to control the water valve to be opened when the temperature sensor detects that the temperature of the coolant flowing out of the fuel cell stack is higher than a preset temperature T1, so that the water collected by the water collector can be directed to flow toward an outer surface of the heat dissipation portion of the heat sink of the hydrogen fuel cell.
21. The heat dissipation system of claim 18, further comprising a temperature sensor and a control module, wherein the temperature sensor is disposed opposite the air outlet of the hydrogen fuel cell to detect a temperature of the air exiting the air outlet of the hydrogen fuel cell, the control module is disposed to be communicatively coupled to the temperature sensor and the water valve, respectively, wherein the control module is configured to control the water valve to open when the temperature of the air exiting the air outlet of the hydrogen fuel cell detected by the temperature sensor is higher than a predetermined temperature T2, so that the water collected by the water collector can be directed to flow toward an outer surface of the heat dissipation portion of the heat sink of the hydrogen fuel cell.
22. A heat dissipation system for a hydrogen fuel cell, comprising:
at least one heat sink;
at least one first coolant tube;
at least one second coolant pipe, wherein both ends of the first coolant pipe form a first liquid inlet end and a first liquid outlet end respectively, and both ends of the second coolant pipe form a second liquid inlet end and a second liquid outlet end respectively, wherein the first liquid inlet end of the first coolant pipe and the second liquid outlet end of the second coolant pipe are connected to the radiator respectively, and the first liquid outlet end of the first coolant pipe and the second liquid inlet end of the second coolant pipe are connected to the fuel cell stack of the hydrogen fuel cell respectively;
a water collector, wherein the water collector is communicated with the air outlet of the hydrogen fuel cell to collect water contained in the gas discharged from the air outlet of the hydrogen fuel cell; and
a first water guide tube;
a second water guide tube;
a water container; and
a water valve, wherein one end of the first water guide pipe is communicated with the water collector, the other end of the first water guide pipe is communicated with the water container, one end of the second water guide pipe is communicated with the water container, the other end of the second water guide pipe is arranged to be opposite to the outer surface of the heat dissipation part of the radiator, and the water valve is arranged on the second water guide pipe to control the flow of water in the second water guide pipe.
23. The heat dissipating system of claim 22, further comprising a water valve, wherein the water valve is disposed in the second water guide tube to control the flow of water in the second water guide tube.
24. The heat dissipation system of claim 23, wherein the water valve is configured to be opened and to enable water stored in the water container to be directed to flow to an outer surface of the heat dissipation portion of the heat sink of the hydrogen fuel cell when the temperature of the coolant flowing from the fuel cell stack is higher than a preset temperature T1.
25. The heat dissipation system of claim 23, wherein the water valve is configured to be opened and to enable water stored in the water container to be directed to flow to an outer surface of the heat dissipation portion of the heat sink of the hydrogen fuel cell when the temperature of the gas discharged from the air discharge port of the hydrogen fuel cell is higher than a preset temperature T2.
26. The heat removal system of claim 24, further comprising a temperature sensor disposed at the second inlet end of the second coolant line to detect the temperature of the coolant flowing from the fuel cell stack, and a control module disposed in communication with the temperature sensor and the water valve, respectively, wherein the control module is configured to control the water valve to open when the temperature sensor detects that the temperature of the coolant flowing from the fuel cell stack is higher than a predetermined temperature T1, so that the water stored in the water container can be directed to the outer surface of the heat sink portion of the heat sink of the hydrogen fuel cell.
27. The heat dissipation system of claim 24, further comprising a temperature sensor disposed at a coolant outlet of the fuel cell stack to detect a temperature of the coolant flowing out of the fuel cell stack, and a control module disposed to be communicatively coupled to the temperature sensor and the water valve, respectively, wherein the control module is configured to control the water valve to be opened when the temperature sensor detects that the temperature of the coolant flowing out of the fuel cell stack is higher than a preset temperature T1, so that the water collected by the water collector can be directed to flow toward an outer surface of the heat dissipation portion of the heat sink of the hydrogen fuel cell.
28. The heat dissipating system of claim 25, further comprising a temperature sensor disposed opposite the air outlet of the hydrogen fuel cell to detect a temperature of the gas exiting the air outlet of the hydrogen fuel cell, and a control module disposed to be respectively communicably connected to the temperature sensor and the water valve, wherein the control module is configured to control the opening of the water valve when the temperature of the gas exiting the air outlet of the hydrogen fuel cell detected by the temperature sensor is higher than a preset temperature T, so that the water stored in the water container can be guided to the outer surface of the heat dissipating portion of the radiator of the hydrogen fuel cell.
29. The heat dissipation system of claim 26, further comprising a pressure pump and a spray head, wherein the pressure pump has a water inlet and a water outlet, wherein the water inlet of the pressure pump is in communication with the second water guide pipe, and the water outlet of the pressure pump is in communication with the spray head, wherein the water spray hole of the spray head is disposed opposite to the outer surface of the heat dissipation portion of the hydrogen fuel cell heat sink, wherein the pressure pump is communicatively connected to the control module, wherein the control module is configured to control the pressure pump to be turned on when the temperature of the coolant flowing out of the fuel cell stack, detected by the temperature sensor, is higher than a preset temperature T1, so that the water stored in the water container can be guided to flow to the hydrogen fuel cell heat sink through the second water guide pipe and pressurized by the pressure pump, is sprayed on the outer surface of the radiator of the hydrogen fuel cell through the spray head.
30. The heat dissipation system of claim 27, further comprising a pressure pump and a spray head, wherein the pressure pump has a water inlet and a water outlet, wherein the water inlet of the pressure pump is in communication with the second water guide pipe, and the water outlet of the pressure pump is in communication with the spray head, wherein the water spray hole of the spray head is disposed opposite to the outer surface of the heat dissipation portion of the hydrogen fuel cell heat sink, wherein the pressure pump is communicably connected to the control module, wherein the control module is configured to control the pressure pump to be turned on when the temperature of the coolant flowing out of the fuel cell stack, detected by the temperature sensor, is higher than a preset temperature T1, so that the water stored in the water container can be guided to flow to the hydrogen fuel cell heat sink through the second water guide pipe and pressurized by the pressure pump, is sprayed on the outer surface of the radiator of the hydrogen fuel cell through the spray head.
31. The heat dissipating system of claim 28, further comprising a pressure pump and a nozzle, wherein the pressure pump has a water inlet and a water outlet, wherein the water inlet of the pressure pump is in communication with the second water guide pipe, and the water outlet of the pressure pump is in communication with the nozzle, wherein the water jet hole of the nozzle is disposed to face an outer surface of the heat dissipating portion of the hydrogen fuel cell radiator, wherein the pressure pump is communicably connected to the control module, wherein the control module is configured to control the pressure pump to be turned on when the temperature of the gas discharged from the air outlet of the hydrogen fuel cell detected by the temperature sensor is higher than a preset temperature T, so that the water stored in the water container can be guided to the hydrogen fuel cell radiator through the second water guide pipe and pressurized by the pressure pump, is sprayed on the outer surface of the radiator of the hydrogen fuel cell through the spray head.
32. A method for dissipating heat from a hydrogen fuel cell having a heat sink, comprising the steps of:
(A) detecting the temperature of the gas discharged from the air outlet of the hydrogen fuel cell; and
(B) if the temperature of the gas discharged from the air outlet of the hydrogen fuel cell is higher than a preset temperature T, spraying a proper amount of water on the outer surface of the heat dissipation part of the heat sink of the hydrogen fuel cell.
33. A method for dissipating heat from a hydrogen fuel cell having a heat sink, comprising the steps of:
(A) detecting a temperature of coolant flowing out from the fuel cell stack; and
(B) if the temperature of the coolant flowing out of the fuel cell stack is higher than a preset temperature T1, an appropriate amount of water is sprayed on the outer surface of the heat radiating portion of the heat sink of the hydrogen fuel cell.
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| CN201811407572.6A CN111224128A (en) | 2018-11-23 | 2018-11-23 | Heat dissipation system and heat dissipation method for hydrogen fuel cell |
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