CN114050289B - Purging device for fuel cell stack shell - Google Patents
Purging device for fuel cell stack shell Download PDFInfo
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- CN114050289B CN114050289B CN202111243315.5A CN202111243315A CN114050289B CN 114050289 B CN114050289 B CN 114050289B CN 202111243315 A CN202111243315 A CN 202111243315A CN 114050289 B CN114050289 B CN 114050289B
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
- H01M8/04179—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal by purging or increasing flow or pressure of reactants
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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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04228—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during shut-down
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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
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
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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
- H01M8/04343—Temperature; Ambient temperature of anode exhausts
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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
Abstract
The invention provides a purging device for a fuel cell stack shell, which comprises a plurality of purging pipes and an air inlet pipe, wherein the purging pipes are arranged in a cavity defined by the shell, the length direction of the purging pipes is consistent with the length direction of the shell, the cavity comprises a first section, a second section and a third section which are sequentially arranged along the front-back direction, the purging pipes are provided with a first purging port and a second purging port, the first purging port is arranged in the first section, the opening direction of the first purging port faces the second section, the second purging port is arranged in the second section, the opening direction of the second purging port faces the third section, and the shell is provided with an outlet communicated with the third section; the air inlet pipe is provided with an air inlet and an air outlet, the air inlet is suitable for being connected with an air source, and the air outlet is connected with the purging pipe so as to provide purging air for the purging pipe. The purging device for the fuel cell stack shell has the advantages of high purging efficiency, high purging precision and high reliability.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a purging device for a fuel cell stack shell.
Background
The hydrogen fuel cell is a fuel cell which converts chemical energy in hydrogen fuel into electric energy, but because the hydrogen permeability is very strong, once the hydrogen leaks and is mixed with air, combustible mixed gas is very easily formed, and then combustion or explosion is initiated, so that the threat to personal safety and property safety is directly caused, therefore, in the related technology, ventilation purging is usually adopted for a galvanic pile in the fuel cell to reduce the concentration of the hydrogen. However, when the fuel cell stack is purged in the related art, the purge air is directly introduced into the stack shell from one end and is discharged from the other end of the stack shell, and therefore the purge efficiency, the purge precision and the reliability are poor.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides the purging device for the fuel cell stack shell, and the purging device for the fuel cell stack shell has the advantages of high purging efficiency, high purging precision and high reliability.
The fuel cell stack shell purging device of the embodiment of the invention comprises:
the plurality of purging pipes are arranged in a cavity defined by the shell, the length direction of each purging pipe is consistent with the length direction of the shell, the cavity comprises a first section, a second section and a third section which are sequentially arranged along the length direction of the shell, each purging pipe is provided with a first purging port and a second purging port, the first purging port is arranged in the first section, the opening direction of the first purging port faces the second section along the length direction of the shell, the second purging port is arranged in the second section, the opening direction of the second purging port faces the third section along the length direction of the shell, and the shell is provided with an outlet communicated with the third section;
the air inlet pipe is provided with an air inlet and an air outlet, the air inlet is suitable for being connected with an air source, and the air outlet is connected with the purging pipe so as to provide purging air for the purging pipe.
The fuel cell stack shell purging device provided by the embodiment of the invention can improve the purging efficiency of the fuel cell, can improve the purging precision of the stack, and has the advantage of high reliability.
In some embodiments, the housing includes a surrounding wall, a first cover plate and a second cover plate, the first cover plate has a receiving cavity for placing the air inlet pipe, an annular cavity is defined between the surrounding wall and the surrounding wall of the electric pile, a plurality of the purge pipes are arranged in the annular cavity along the circumference of the surrounding wall, and the outlet is arranged on the second cover plate.
In some embodiments, the fuel cell stack casing purging device according to the embodiments of the present invention further includes a first branch pipe, one end of the first branch pipe is connected to the purging pipe, the first purging port is provided at the other end of the first branch pipe, one end of the purging pipe is connected to the air outlet of the air inlet pipe, and the second purging port is provided at the other end of the purging pipe.
In some embodiments, at least one of the purge pipes has a third purge port disposed adjacent to the inspection unit of the stack, the third purge port opening toward the inspection unit.
In some embodiments, the fuel cell stack casing purging device of the embodiments of the present invention further includes at least one second branch pipe, one second branch pipe corresponds to one purging pipe, one end of the second branch pipe is connected to the purging pipe, and the third purging port is opened at the other end of the second branch pipe.
In some embodiments, at least one of the purge tubes has a fourth purge port disposed adjacent to a positive copper plate of the stack, the fourth purge port having an opening direction coincident with an opening direction of the first purge port.
In some embodiments, the at least one purge tube further has a fifth purge port, the fifth purge port is arranged adjacent to the cathode brass plate of the stack, and the opening direction of the fifth purge port is consistent with the opening direction of the fourth purge port.
In some embodiments, the fuel cell stack casing purging device according to the embodiments of the present invention further includes at least one third branch pipe and at least one fourth branch pipe, one third branch pipe corresponds to one purging pipe, one fourth branch pipe corresponds to one purging pipe, one end of the third branch pipe is connected to the purging pipe, the fourth purging port is opened at the other end of the third branch pipe, one end of the fourth branch pipe is connected to the purging pipe, and the fifth purging port is opened at the other end of the fourth branch pipe.
In some embodiments, the number of the inlet pipes is two, and some of the plurality of purge pipes form a first pipe group, and the rest of the plurality of purge pipes form a second pipe group, the purge pipes in the first pipe group are connected to one of the inlet pipes, and the purge pipes in the second pipe group are connected to the other inlet pipe.
In some embodiments, the fuel cell stack enclosure purging device of embodiments of the present invention further comprises a detector for detecting a hydrogen concentration, the detector being disposed adjacent to the outlet.
In some embodiments, the fuel cell stack casing purging device of the embodiments of the present invention further includes a plurality of support members, the plurality of support members corresponding to the plurality of purge pipes one to one, the support members being connected between the purge pipes and the stack.
Drawings
Fig. 1 is a schematic piping arrangement diagram of a fuel cell stack casing purge device according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a fuel cell stack casing purge apparatus according to an embodiment of the present invention.
Figure 3 is a schematic diagram of hydrogen distribution within a fuel cell stack enclosure.
Figure 4 is a schematic diagram of hydrogen distribution within a fuel cell stack enclosure.
Figure 5 is a schematic diagram of hydrogen distribution within a fuel cell stack enclosure.
Figure 6 is a schematic diagram of hydrogen distribution within a fuel cell stack enclosure.
Fig. 7 is a schematic view showing the flow state of purge gas in the fuel cell stack casing purge device according to the embodiment of the present invention.
Reference numerals:
a housing 10; a surrounding wall 101; a first cover plate 102; an accommodation chamber 1021; a second cover plate 103;
a cavity 20; an annular cavity 21; a first segment 201; a second section 202; a third segment 203;
a purge tube 30; a first purge port 301; a second purge port 302;
an intake duct 40; an air inlet 401;
a first branch pipe 50; a first leg 501; a second branch 502;
a second branch pipe 60; a third purge port 601;
a third branch pipe 70; a fourth purge port 701;
a fourth branch tube 80; a fifth purge port 801;
an inspection component 90;
a positive electrode copper plate 11;
a negative copper plate 12;
a first tube group 13;
a second tube group 14;
a detector 15;
a galvanic pile 16.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 and 2, a fuel cell stack casing purge device according to an embodiment of the present invention includes: a plurality of purge tubes 30 and an intake tube 40.
The plurality of purge pipes 30 are arranged in a cavity 20 surrounded by the housing 10, the length direction of the purge pipes 30 is the same as the length direction (front-back direction in fig. 1) of the housing 10, the cavity 20 includes a first section 201, a second section 202 and a third section 203 which are sequentially arranged along the length direction of the housing 10, the purge pipes 30 have a first purge port 301 and a second purge port 302, the first purge port 301 is arranged in the first section 201, the opening direction of the first purge port 301 faces the second section 202 along the length direction of the housing 10, the second purge port 302 is arranged in the second section 202, the opening direction of the second purge port 302 faces the third section 203 along the length direction of the housing 10, and the housing 10 has an outlet communicated with the third section 203. The inlet conduit 40 has an inlet port 401 adapted to be connected to a source of gas and an outlet port connected to the purge conduit 30 for supplying purge gas to the purge conduit 30.
Specifically, as shown in fig. 1 and fig. 2, the cavity 20 enclosed by the housing 10 includes a front portion, a middle portion and a rear portion, i.e., the front portion forms the first section 201, the middle portion forms the second section 202, and the rear portion forms the third section 203, that is, the purging directions of the first purging port 301 and the second purging port 302 are purging toward the rear of the cavity 20, so as to purge the gas flow in the fuel cell uniformly and enable the hydrogen gas to be discharged from the gas outlet.
It will be appreciated that the air supply may be an air pump, or may be other means capable of providing air pressure.
The fuel cell stack shell purging device provided by the embodiment of the invention can improve the purging efficiency of the fuel cell, can improve the purging precision of the stack, and has the advantage of high reliability.
In some embodiments, as shown in fig. 2, the housing 10 includes an enclosure wall 101, a first cover plate 102 and a second cover plate 103, the first cover plate 102 and the second cover plate 103 are oppositely disposed in the length direction of the housing 10, the first cover plate 102 is located in front of the second cover plate 103, the enclosure wall 101 is connected between the first cover plate 102 and the second cover plate 103, the first cover plate 102 has a receiving cavity 1021 for placing the gas inlet pipe 40, an annular cavity 21 is defined between the enclosure wall 101 and the peripheral wall of the cell stack 16, a plurality of purge pipes 30 are disposed in the annular cavity 21 along the circumference of the enclosure wall 101, an outlet is disposed on the second cover plate 103, and the outlet is used for discharging the purged hydrogen.
It can be understood that, first apron 102 is equipped with and holds chamber 1021, and intake pipe 40 is established and is holding in chamber 1021, the space in annular chamber 21 has been avoided intake pipe 40 to occupy, improve the space utilization of annular chamber 21, a plurality of pipes 30 that sweep set up in annular chamber 21 along the circumference of bounding wall 101, that is, a plurality of pipes 30 that sweep simultaneously when sweeping, can make the hydrogen in the fuel cell with sweep gaseous homogeneous mixing in the fuel cell, reduce the concentration of hydrogen in the fuel cell after, discharge from the export again, thereby improved the effect of sweeping.
In some embodiments, as shown in fig. 1 and fig. 2, the fuel cell stack casing purging device according to the embodiment of the present invention further includes a first branch pipe 50, one end of the first branch pipe 50 is connected to the purging pipe 30, a first purging port 301 is provided at the other end of the first branch pipe 50, one end of the purging pipe 30 is connected to the gas outlet of the gas inlet pipe 40, and a second purging port 302 is provided at the other end of the purging pipe 30.
Specifically, the first branch pipe 50 is an L-shaped pipe, the first branch pipe 50 includes a first branch portion 501 and a second branch portion 502, an extending direction of an axis of the first branch portion 501 is perpendicular to an extending direction of an axis of the purge pipe 30, one end of the first branch portion 501 is connected to the purge pipe 30, the other end of the first branch portion 501 is connected to one end of the second branch portion 502, and an extending direction of an axis of the second branch portion 502 is parallel to the extending direction of the axis of the purge pipe 30, so as to ensure that an opening direction of the first purge port 301 is along a front-back direction and faces the second section 202.
It is understood that the shape of the first branch pipe 50 may be configured in other shapes according to the internal structure of the fuel cell to adapt to different fuel cells, thereby improving the purging efficiency.
The inventor finds that the hydrogen concentration near each component is different due to different positions of each component through analysis in the fuel cell, particularly the hydrogen concentration near the positive and negative copper plates and the routing inspection part is high, and the inventor obtains the results shown in fig. 3-6 through calculation simulation and verification, and according to the hydrogen distribution diagrams shown in fig. 3-6, the regions with the hydrogen concentration higher than 1% are all concentrated near the leakage point, the hydrogen concentration in other regions is lower than 1%, and the hydrogen concentration distribution is relatively uniform.
Thus, the inventors propose the following examples.
In some embodiments, as shown in fig. 1 and 2, the at least one purge pipe 30 has a third purge port 601, the third purge port 601 is disposed adjacent to the inspection unit 90 of the stack 16, the third purge port 601 is opened toward the inspection unit 90, the fuel cell stack casing purge apparatus of the embodiment of the invention further includes at least one second branch pipe 60, one second branch pipe 60 corresponds to one purge pipe 30, one end of the second branch pipe 60 is connected to the purged pipe 30, and the third purge port 601 is opened at the other end of the second branch pipe 60.
Specifically, the second branch pipe 60 is obliquely arranged so as to better purge the inspection unit 90, that is, the arrangement of the second branch pipe 60 can be changed according to the change of the position of the inspection unit 90, thereby ensuring the purging effect of the second branch pipe 60.
It can be understood that, according to the different positions of the inspection component 90, one or more second branch pipes 60 can be arranged to ensure the purging of hydrogen near the inspection component 90, so as to improve the working efficiency of the fuel cell stack.
In some embodiments, as shown in fig. 1 and 2, the at least one purge tube 30 has a fourth purge port 701, the fourth purge port 701 is disposed adjacent to the positive copper plate 11 of the stack 16, and the opening direction of the fourth purge port 701 coincides with the opening direction of the first purge port 301.
It can be understood that the fourth purge port 701 is mainly responsible for purging the positive electrode copper plate 11, and it is ensured that the opening direction of the fourth purge port 701 is consistent with that of the first purge port 301, so that the gas in the annular cavity 21 during purging can be in a flowing state, and the gas inside the annular cavity 21 is in a flowing state from front to back (as shown in fig. 7), that is, as shown in fig. 7, no significant vortex occurs in the annular cavity 21, which is beneficial to timely discharging hydrogen, and further improves the purge efficiency of the fuel cell stack.
In some embodiments, as shown in fig. 1 and 2, the at least one purge pipe 30 further has a fifth purge port 801, the fifth purge port 801 is disposed adjacent to the negative copper plate 12 of the stack 16, and the opening direction of the fifth purge port 801 coincides with the opening direction of the fourth purge port 701.
It can be understood that, according to different structures inside the cell, at least one fifth purge port 801 can be provided, and the fifth purge port 801 is responsible for purging the negative copper plate 12, and meanwhile, the opening directions of the fifth purge port 801 and the fourth purge port 701 are ensured to be consistent, so that the gas in the annular cavity 21 can be in a flowing state during purging (as shown in fig. 7), and further, the purge efficiency of the fuel cell stack can be improved.
In some embodiments, as shown in fig. 1 and 2, the fuel cell stack casing purging device according to the embodiment of the present invention further includes at least one third branch pipe 70 and at least one fourth branch pipe 80, one third branch pipe 70 corresponds to one purging pipe 30, one fourth branch pipe 80 corresponds to one purging pipe 30, one end of the third branch pipe 70 is connected to the purged pipe 30, a fourth purging port 701 is opened at the other end of the third branch pipe 70, one end of the fourth branch pipe 80 is connected to the purged pipe 30, and a fifth purging port 801 is opened at the other end of the fourth branch pipe 80.
It can be understood that one or more third branch pipes 70 and one or more fourth branch pipes 80 are arranged according to different internal structures of the fuel cells, and the pipeline path of the third branch pipe 70 or the fourth branch pipe 80 is changed according to different internal structures of the fuel cells, so that the third branch pipe 70 blows to the positive copper plate 11, and the fourth branch pipe 80 blows to the negative copper plate 12, and further the blowing precision is improved; meanwhile, the purging directions of the fourth purging port 701 of the third branch pipe 70 and the fifth purging port 801 of the fourth branch pipe 80 are backward, so that the gas in the annular cavity 21 flows when the third branch pipe 70 and the fourth branch pipe 80 are purged (as shown in fig. 7), and further the purging efficiency is improved.
In some embodiments, as shown in fig. 1 and 2, the inlet tubes 40 are two, some of the plurality of purge tubes 30 form the first tube group 13, and the remaining of the plurality of purge tubes 30 form the second tube group 14, with the purge tubes 30 in the first tube group 13 being connected to one inlet tube 40, and the purge tubes 30 in the second tube group 14 being connected to another inlet tube 40.
It will be appreciated that the first tube set 13 is located above the second tube set 14, and that there are two inlet tubes 40, and that the two inlet tubes 40 may be connected to the same source or to different sources.
That is, while the air supply is ventilating to one of the intake tubes 40, the other intake tube 40 may or may not be ventilating at the same time.
In some embodiments, the fuel cell stack enclosure purging device of embodiments of the present invention further includes a detector 15 for detecting the hydrogen concentration, the detector 15 being disposed adjacent to the outlet.
It will be appreciated that the detector 15 is capable of detecting the hydrogen level within the fuel cell and detecting a leak in the fuel cell to improve the safety of the fuel cell stack enclosure purge arrangement of embodiments of the present invention.
It should be noted that, according to the method and standard for detecting the air tightness of the fuel cell stack, the outlet hydrogen concentration needs to be less than 100ppm, and for the fuel cell stack shell purging device provided by the invention, through multiple calculations, the outlet hydrogen concentrations are respectively 28.6ppm, 29.47ppm and 30.2ppm, and the result is far less than 100ppm, so that the fuel cell stack shell purging device provided by the invention can meet the stack purging requirement.
In some embodiments, the fuel cell stack enclosure purge apparatus of embodiments of the present invention further includes a plurality of support members, one-to-one corresponding to the plurality of purge tubes 30, the support members being connected between the purge tubes 30 and the stack 16.
It can be understood that the plurality of supporting members are used for supporting the plurality of purge pipes 30, that is, the plurality of supporting members are used for fixing the plurality of purge pipes 30, so that the stability of the plurality of purge pipes 30 is ensured, and the purge quality and the purge efficiency are improved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A fuel cell stack enclosure purging device, comprising:
a plurality of purge pipes provided in a cavity surrounded by the casing, a length direction of the purge pipe being identical to a length direction of the casing, the cavity comprises a first section, a second section and a third section which are sequentially arranged along the length direction of the shell, the purge tube has a first purge port and a second purge port, the first purge port is disposed within the first section, the opening direction of the first purging port faces the second section along the length direction of the shell, the second purging port is arranged in the second section, the opening direction of the second purging port faces the third section along the length direction of the shell, the shell is provided with an outlet communicated with the third section, at least one purging pipe is provided with a third purging port, the third purging port is arranged close to the inspection component of the electric pile, and the opening direction of the third purging port faces the inspection component;
the air inlet pipe is provided with an air inlet and an air outlet, the air inlet is suitable for being connected with an air source, and the air outlet is connected with the purging pipe so as to provide purging air for the purging pipe.
2. The fuel cell stack casing purge device according to claim 1, wherein the casing includes a surrounding wall, a first cover plate and a second cover plate, the first cover plate and the second cover plate are disposed opposite to each other in a length direction of the casing, the surrounding wall is connected between the first cover plate and the second cover plate, the first cover plate has a receiving cavity in which the intake pipe is placed, an annular cavity is defined between the surrounding wall and a peripheral wall of the stack, a plurality of the purge pipes are disposed in the annular cavity in a circumferential direction of the surrounding wall, and the outlet is provided on the second cover plate.
3. The fuel cell stack casing purging device according to claim 1, further comprising a first branch pipe, one end of the first branch pipe being connected to the purge pipe, the first purge port being provided at the other end of the first branch pipe, one end of the purge pipe being connected to the gas outlet of the gas inlet pipe, the second purge port being provided at the other end of the purge pipe.
4. The fuel cell stack casing purge device according to claim 1, further comprising at least one second branch pipe, one second branch pipe corresponding to one purge pipe, one end of the second branch pipe being connected to the purge pipe, the third purge port being opened at the other end of the second branch pipe.
5. The fuel cell stack enclosure purging device according to claim 1, wherein at least one of the purge pipes has a fourth purge port disposed adjacent to an anode brass plate of the stack, and an opening direction of the fourth purge port coincides with an opening direction of the first purge port.
6. The fuel cell stack enclosure purging device according to claim 5, wherein the at least one purging tube further has a fifth purging port, the fifth purging port is disposed adjacent to a negative copper plate of the stack, and an opening direction of the fifth purging port coincides with an opening direction of the fourth purging port.
7. The fuel cell stack casing purging device according to claim 6, further comprising at least one third branch pipe and at least one fourth branch pipe, one third branch pipe corresponding to one purge pipe and one fourth branch pipe corresponding to one purge pipe, one end of the third branch pipe being connected to the purge pipe, the fourth purge port being provided at the other end of the third branch pipe, one end of the fourth branch pipe being connected to the purge pipe, and the fifth purge port being provided at the other end of the fourth branch pipe.
8. The fuel cell stack casing purge device according to any one of claims 1 to 7, wherein the number of the intake pipes is two, a part of the plurality of purge pipes forms a first pipe group, and the remaining part of the plurality of purge pipes forms a second pipe group, the purge pipes in the first pipe group being connected to one of the intake pipes, and the purge pipes in the second pipe group being connected to the other intake pipe.
9. The fuel cell stack enclosure purge apparatus of any of claims 1-7, further comprising a detector for detecting a hydrogen concentration, the detector disposed adjacent to the outlet.
10. The fuel cell stack enclosure purge apparatus of any of claims 1-7, further comprising a plurality of support members in one-to-one correspondence with the plurality of purge tubes, the support members being connected between the purge tubes and the stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111243315.5A CN114050289B (en) | 2021-10-25 | 2021-10-25 | Purging device for fuel cell stack shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111243315.5A CN114050289B (en) | 2021-10-25 | 2021-10-25 | Purging device for fuel cell stack shell |
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| CN114050289B true CN114050289B (en) | 2022-07-01 |
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| CN210245640U (en) * | 2019-09-26 | 2020-04-03 | 潍柴动力股份有限公司 | Electric pile and hydrogen purging equipment and fuel cell engine thereof |
| CN212967768U (en) * | 2020-10-13 | 2021-04-13 | 风氢扬氢能科技(上海)有限公司 | Purging structure of fuel cell box |
| CN113540545A (en) * | 2021-07-15 | 2021-10-22 | 深圳氢时代新能源科技有限公司 | Fuel cell stack packaging box and fuel cell |
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| CN210245640U (en) * | 2019-09-26 | 2020-04-03 | 潍柴动力股份有限公司 | Electric pile and hydrogen purging equipment and fuel cell engine thereof |
| CN212967768U (en) * | 2020-10-13 | 2021-04-13 | 风氢扬氢能科技(上海)有限公司 | Purging structure of fuel cell box |
| CN113540545A (en) * | 2021-07-15 | 2021-10-22 | 深圳氢时代新能源科技有限公司 | Fuel cell stack packaging box and fuel cell |
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