CN118054048A - High-efficiency hydrogen fuel cell stack and production equipment - Google Patents
High-efficiency hydrogen fuel cell stack and production equipment Download PDFInfo
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- CN118054048A CN118054048A CN202410196897.3A CN202410196897A CN118054048A CN 118054048 A CN118054048 A CN 118054048A CN 202410196897 A CN202410196897 A CN 202410196897A CN 118054048 A CN118054048 A CN 118054048A
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- fuel cell
- hydrogen fuel
- end plate
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- 239000000446 fuel Substances 0.000 title claims abstract description 54
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000001257 hydrogen Substances 0.000 title claims abstract description 51
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 119
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 94
- 239000002826 coolant Substances 0.000 claims abstract description 41
- 230000001965 increasing effect Effects 0.000 claims abstract description 37
- 230000000903 blocking effect Effects 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 11
- 238000009826 distribution Methods 0.000 description 10
- 238000005452 bending Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
-
- 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
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2404—Processes or apparatus for grouping fuel cells
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a high-efficiency hydrogen fuel cell stack and production equipment, which relate to the technical field of hydrogen fuel cell stacks, and comprise end plates positioned on two sides of a cell piece, and further comprise: the reinforcing ribs are arranged on the surface of the end plate in the length direction and protrude out of the surface of the end plate, and are paved on the surface of the end plate to strengthen the strength of the end plate in the length direction; according to the invention, the reinforcing ribs are arranged on the end plate, so that the cooling channel part can be designed by utilizing the arrangement of the reinforcing ribs while the thickness of the end plate is not required to be increased, a cooling system is not required to be redesigned, the expenditure of design cost is reduced, an air cooling channel can be provided, the compactness of the structural design is further improved, in addition, the X-shaped flow blocking part or the turbine blade group is arranged in the capacity increasing part, the residence time and the increasing flow path of cooling medium are prolonged, the cooling medium can be disturbed, and the cooling rate is improved.
Description
Technical Field
The invention belongs to the technical field of hydrogen fuel cell stacks, and particularly relates to a high-efficiency hydrogen fuel cell stack.
Background
The hydrogen fuel cell is used as a power generation device of a power system, and has the advantages of zero emission, long endurance, short fuel filling time, long service life, wide environmental adaptability and the like;
The hydrogen fuel cell stack is made by stacking a plurality of cell sheets and fixing the stacked cell sheets at both ends by using end plates, and the hydrogen fuel cell manufactured at present has two problems, namely: when the length of each single cell piece is larger, the problem of waist collapse of the cell occurs at the middle part, the problem of waist collapse is solved by increasing the strength of end plates at two ends, the mode of increasing the strength is usually to increase the thickness of the end plates or to adopt materials with higher strength, the thickness of the end plates is increased, the volume and the thickness of the hydrogen fuel cell stack are increased, the capacity of the cell is reduced indirectly, and the manufacturing cost is increased dramatically by adopting materials with higher strength;
Secondly, it is: hydrogen fuel cells, when in operation, convert chemical energy of fuel into electrical energy; however, in the process of converting chemical energy of fuel into electric energy, part of chemical energy is converted into heat, so that the temperature of the battery monomer is increased, the too high temperature of the battery monomer possibly causes the reduction of the water content of a proton exchange membrane, damages the proton exchange membrane, reduces the power generation efficiency and performance of the hydrogen fuel cell, and even possibly causes the damage of the hydrogen fuel cell stack, in order to solve the problem of heat dissipation and temperature reduction in the prior art, a cooling structure is required to be independently designed for heat dissipation and temperature reduction of the cell, and the cooling structure is mainly divided into water cooling and air cooling;
As in the prior art, application publication No.: CN116314910a, application publication date: 2023.06.23, namely a hydrogen fuel cell stack, comprising a distribution main pipe and a cell unit, wherein the cell unit is sleeved on the distribution main pipe, the distribution main pipe is provided with a channel, the channel is arranged along the axial direction of the distribution main pipe and penetrates through one end part of the distribution main pipe, and an opening is formed in one side part of the distribution main pipe and communicated with the channel; the size of the distribution header inner diameter increases gradually along the gas flow direction. The distribution header pipe adopts a variable cross-section design to improve the consistency of overall flow distribution of the electric pile, thereby improving the drainage performance of the electric pile; the battery monomers are stacked on the distribution header pipe, so that deviation in the assembly process of the electric pile can be reduced, the rigidity of the whole electric pile is improved, and the problem of waist collapse caused by overlong electric pile is avoided;
Although the above patent can enhance the strength of the battery to prevent the waist from collapsing, but cannot solve the problem of heat dissipation and temperature reduction of the battery while enhancing the strength of the battery, the cooling structure needs to be designed separately, which results in increased design cost, and therefore we propose a high-efficiency hydrogen fuel cell stack.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and to provide a high performance hydrogen fuel cell stack which overcomes or at least partially solves the above-mentioned problems.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that: a high efficiency hydrogen fuel cell stack comprising end plates on either side of a cell, further comprising: the reinforcing ribs are arranged on the surface of the end plate in the length direction and protrude out of the surface of the end plate, and are paved on the surface of the end plate to strengthen the strength of the end plate in the length direction; a cooling channel part arranged in the reinforcing rib, wherein the cooling channel part is used for arranging a path for supplying cooling medium to circulate in the reinforcing rib, and a capacity increasing part for increasing the cooling medium path is arranged at the middle section of the cooling channel part positioned at the end plate; the connecting nozzle is arranged at two ends of the reinforcing rib of the end plate, and one end of the connecting nozzle is communicated with the cooling channel part.
Preferably, the reinforcing rib includes first end long sections at both ends and wide-area reinforcing sections between the first end long sections at both ends.
Further, the cooling channel portion is a wide-area cooling channel located within the first end long portion and the wide-area reinforcement portion, and the compatibilizer is located within the wide-area reinforcement portion.
Preferably, the reinforcing rib comprises second end strip parts positioned at two ends and triangular reinforcing parts positioned between the second end strip parts at two ends, and adjacent triangular reinforcing parts are communicated through narrow strip parts.
Further, the cooling channel part is a triangular cooling channel, the triangular cooling channel is located in the second end part long strip part, the triangular reinforcing part and the narrow strip part, the capacity increasing part is located in the triangular reinforcing part, and the width of the narrow strip part is smaller than that of the second end part long strip part.
Preferably, the reinforcing rib comprises a third end long strip part at two ends and a diamond-shaped reinforcing part between the third end long strip parts at two ends.
Further, the cooling channel part is a diamond-shaped cooling channel, the diamond-shaped cooling channel is positioned in the third end long part and the diamond-shaped reinforcing part, and the capacity increasing part is positioned in the diamond-shaped reinforcing part.
Preferably, the reinforcing rib comprises a fourth end strip at both ends and a wave reinforcement between the fourth end strips at both ends.
Further, the cooling channel part is a wave cooling channel, the wave cooling channel is positioned in the long strip part and the wave reinforcing part at the fourth end, and the capacity increasing part is positioned in the wave reinforcing part.
Further, an X-shaped flow blocking part is arranged in the capacity increasing part, openings capable of allowing cooling medium to pass through are formed in four supporting legs of the X-shaped flow blocking part, and a plurality of flow blocking cavities are formed between the X-shaped flow blocking part and the capacity increasing part.
A production facility includes a high performance hydrogen fuel cell stack including a welding robot for welding the reinforcing bars to the end plates.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects: according to the invention, the reinforcing ribs are arranged on the end plate, so that the cooling channel part can be designed by utilizing the arrangement of the reinforcing ribs while the thickness of the end plate is not required to be increased, a cooling system is not required to be redesigned, the design cost is reduced, the air cooling channel is provided, the compactness of the structural design is further improved, in addition, the strength and the bending resistance of the end plate can be improved, the stay time of a cooling medium can be prolonged, the circulation path of the cooling medium can be prolonged, and meanwhile, the cooling medium in the middle of the cooling medium can be fully contacted with heat and taken away, so that the cooling rate is further improved.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
In the drawings:
FIG. 1 is a schematic perspective view of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 2 is a schematic structural view of a reinforcement bar of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 3 is a schematic view of a first end long strip of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 4 is a schematic view of a wide area cooling channel of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 5 is a schematic diagram showing a structure of an X-shaped choke part of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 6 is a schematic view of a second end strip of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 7 is a schematic diagram of a triangular cooling channel of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 8 is a schematic diagram of a structure of an X-shaped choke part of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 9 is a schematic view of a third end long strip of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 10 is a schematic diagram of a diamond-shaped cooling channel of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 11 is a schematic diagram of an X-shaped choke part of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 12 is a schematic view of a fourth end long strip of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 13 is a schematic view of a wave cooling channel of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 14 is a schematic diagram showing an X-shaped choke part of a high performance hydrogen fuel cell stack according to the present invention;
FIG. 15 is a schematic view of a connecting shaft and turbine blade set of a high performance hydrogen fuel cell stack according to the present invention;
Fig. 16 is a schematic view of a production apparatus according to the present invention.
In the figure: 1. an end plate; 10. a connecting nozzle; 2. a battery sheet; 3. reinforcing ribs; 31. a first end sliver portion; 310. a wide-area reinforcing part; 311. a wide-area cooling channel; 32. a second end portion elongated portion; 320. a triangular reinforcement portion; 321. a narrow strip portion; 322. triangular cooling channels; 33. a third end length; 330. a diamond-shaped reinforcing part; 331. diamond-shaped cooling channels; 34. a fourth end strip; 340. a wave reinforcement; 341. wave cooling channels; 4. an X-shaped flow blocking part; 41. opening holes; 42. a choke cavity; 5. a connecting shaft; 51. a turbine blade set.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
The following describes in detail the technical solutions provided by the embodiments of the present invention with reference to fig. 1 to 15.
Example 1: referring to fig. 1 to 15, a high efficiency hydrogen fuel cell stack includes end plates 1 positioned at both sides of a cell sheet 2, and further includes: the reinforcing ribs 3 are arranged on the length direction of the end plate 1 and protrude out of the surface of the end plate 1, and the reinforcing ribs 3 are paved on the surface of the end plate 1 and used for reinforcing the strength of the end plate 1 in the length direction; a cooling channel part arranged in the reinforcing rib 3, wherein the cooling channel part is used for arranging a path for supplying cooling medium to circulate in the reinforcing rib 3, and a capacity increasing part for increasing the cooling medium path is arranged at the middle section of the cooling channel part positioned at the end plate 1; connecting nozzles 10 arranged at both ends of the reinforcing ribs 3 of the end plate 1, and one end of the connecting nozzle 10 is communicated with the cooling channel part;
When the device is used, the strength of the end plates 1 clamping the two sides of the battery piece 2 is enhanced, so that the problem that the battery piece 2 collapses due to insufficient strength of the end plates 1 is prevented;
Specifically, the reinforcing ribs 3 are arranged on one surface of the end plate 1, which is close to the battery piece 2, and the reinforcing ribs 3 are positioned in the length direction of the end plate 1, so that the strength of the end plate 1 is effectively enhanced, the thickness of the end plate 1 is not required to be excessively increased, and meanwhile, the material of the end plate 1 is not required to be replaced;
Meanwhile, the cooling channel part is arranged in the reinforcing rib 3, and a cooling medium for cooling and cooling is conveyed into the cooling channel part through the connecting nozzle 10, wherein the cooling medium can be cooling gas or cooling liquid, is conveyed to one end of the cooling channel part through the connecting nozzle 10 and is discharged from the connecting nozzle 10 at the other end of the cooling channel part, so that the whole cooling of the battery piece 2 is realized;
Therefore, the device can improve the strength of the end plate 1, simultaneously achieve the effect of cooling the battery piece 2, and further save the design cost by improving the strength of the end plate 1 and simultaneously avoiding the battery piece 2 from collapsing, and simultaneously avoiding the need of resetting a cooling structure and only using the arrangement of the reinforcing ribs 3 and forming a cooling channel part inside the reinforcing ribs 3;
in addition, because the reinforcing ribs 3 of the device are arranged to protrude from the surface of the end plate 1, and the reinforcing ribs 3 are uniformly paved on the surface of the end plate 1, gaps exist between the adjacent reinforcing ribs 3, and the reinforcing ribs 3 are attached to the battery pieces 2, so that the gaps are positioned between the end plate 1 and the battery pieces 2, and by additionally arranging the air cooling device, air can pass through the gaps between the end plate 1 and the battery pieces 2, and then an additional air cooling channel is formed between the end plate 1 and the battery pieces 2, so that the cooling effect on the battery pieces 2 is further improved;
therefore, the device not only can utilize the setting of the reinforcing rib 3 to design the cooling channel part when not needing to increase the thickness of the end plate 1 and further improve the strength of the end plate 1, but also can reduce the expenditure of design cost without redesigning a cooling system, and can provide an air cooling channel at the same time, thereby improving the compactness of structural design.
Example 2: referring to fig. 3 and 4, a high-performance hydrogen fuel cell stack is substantially the same as in embodiment 1, and further: the reinforcing bead 3 includes first end long portions 31 at both ends and a wide-area reinforcing portion 310 between the first end long portions 31 at both ends;
When the wide-area reinforcing part 310 is arranged in the middle of the reinforcing rib 3, the strength and the bending resistance of the middle of the end plate 1 can be further improved, so that the middle of the end plate 1 is prevented from collapsing, and the battery piece 2 is further effectively prevented from collapsing.
The cooling channel part is a wide-area cooling channel 311, the wide-area cooling channel 311 is positioned in the first end long strip part 31 and the wide-area reinforcing part 310, and the capacity increasing part is positioned in the wide-area reinforcing part 310;
When the cooling channel portion is the wide-area cooling channel 311, taking the view angle of fig. 4 as an example, the cooling medium flows from the left side to the right side of the cooling channel portion, and because the two sides of the length direction of the battery piece 2 are closer to the outer side, therefore, in the heat dissipation process, the heat dissipation efficiency of the two sides of the length direction of the battery piece 2 is higher, and for this reason, the device sets up the capacity-increasing portion in the middle of the end plate 1, can improve the cooling and heat dissipation effects that the wide-area cooling channel 311 is located in the middle of the end plate 1, further prevents that the heat productivity of the middle part of the battery piece 2 cannot be dissipated in time, and further effectively improves the heat dissipation effect on the battery piece 2.
Example 3: referring to fig. 6 and 7, a high-performance hydrogen fuel cell stack is substantially the same as in embodiment 1, and further: the reinforcing rib 3 comprises second end strip parts 32 positioned at two ends and triangular reinforcing parts 320 positioned between the second end strip parts 32 at two ends, and adjacent triangular reinforcing parts 320 are communicated through narrow strip parts 321;
When the triangular reinforcing part 320 is arranged in the middle of the reinforcing rib 3, the strength and the bending resistance of the end plate 1 can be further increased due to the good stability of the triangle, so that the middle part of the end plate 1 is prevented from collapsing, and the battery piece 2 is further effectively prevented from collapsing;
The cooling channel part is a triangular cooling channel 322, the triangular cooling channel 322 is positioned in the second end long strip part 32, the triangular reinforcing part 320 and the narrow strip part 321, the capacity increasing part is positioned in the triangular reinforcing part 320, and the width of the narrow strip part 321 is smaller than the width of the second end long strip part 32;
When the cooling channel part is the triangular cooling channel 322, taking the view angle of fig. 7 as an example, when the cooling medium flows from the left side to the right side of the cooling channel part, because the two sides of the length direction of the battery piece 2 are closer to the outer side, in the heat dissipation process, the heat dissipation efficiency of the two sides of the length direction of the battery piece 2 is higher, therefore, the device is provided with the capacity-increasing part in the middle part of the end plate 1, the cooling and cooling effects of the triangular cooling channel 322 in the middle part of the end plate 1 can be improved, the heat productivity of the middle part of the battery piece 2 can not be timely dissipated, and the heat dissipation effect of the battery piece 2 is effectively improved;
meanwhile, in the cooling channel part of the device, by arranging the narrow strip parts 321 between the adjacent triangular reinforcing parts 320, the width of the cooling channel of the narrow strip parts 321 in the cooling channel part is smaller than that of the second end strip parts 32, so when the cooling medium passes from the second end strip parts 32 to the triangular reinforcing parts 320, the triangular reinforcing parts 320 are filled with the cooling medium in time, and the cooling medium is blocked by the narrow strip parts 321, so that the cooling medium has the effect of returning flow impact in the triangular reinforcing parts 320, the cooling medium is fully contacted with the battery cells 2 in the triangular cooling channels 322, and the heat on the battery cells 2 is quickly absorbed and taken away.
Example 4: referring to fig. 9 and 10, a high-performance hydrogen fuel cell stack is substantially the same as in embodiment 1, and further: the reinforcing rib 3 includes third end long strip portions 33 at both ends and diamond-shaped reinforcing portions 330 between the third end long strip portions 33 at both ends;
When the diamond-shaped reinforcing part 330 is provided in the middle of the reinforcing rib 3, since the diamond-shaped reinforcing part is composed of two triangles, the bending resistance of the end plate 1 can be improved, and the middle of the end plate 1 is prevented from collapsing, and the battery piece 2 is effectively prevented from collapsing.
The cooling channel part is a diamond cooling channel 331, the diamond cooling channel 331 is positioned in the third end long part 33 and the diamond reinforcing part 330, and the capacity increasing part is positioned in the diamond reinforcing part 330;
When the cooling channel portion is the rhombic cooling channel 331, taking the view angle of fig. 10 as an example, when the cooling medium flows from the left side to the right side of the cooling channel portion, because the two sides of the length direction of the battery piece 2 are closer to the outer side, therefore, in the heat dissipation process, the heat dissipation efficiency of the two sides of the length direction of the battery piece 2 is higher, and for this reason, the device sets up the capacity-increasing portion in the middle of the end plate 1, can improve the cooling and cooling effect that the rhombic cooling channel 331 is located in the middle of the end plate 1, further prevents that the heat productivity of the middle portion of the battery piece 2 can not be dissipated in time, and further effectively improves the heat dissipation effect of the battery piece 2.
Example 5: referring to fig. 12 and 13, a high performance hydrogen fuel cell stack is substantially the same as that of embodiment 1, and further, the reinforcing bars 3 include fourth end long bar portions 34 at both ends and wave reinforcing portions 340 between the fourth end long bar portions 34 at both ends;
When the middle part of the reinforcing rib 3 is provided with the wave reinforcing parts 340, a plurality of regular triangles and inverted triangles are formed between the wave reinforcing parts 340, which is more beneficial to enhancing the strength and the bending resistance of the end plate 1, further preventing the middle part of the end plate 1 from collapsing, and further effectively preventing the battery piece 2 from collapsing.
The cooling channel part is a wave cooling channel 341, the wave cooling channel 341 is positioned in the fourth end long part 34 and the wave reinforcing part 340, and the capacity increasing part is positioned in the wave reinforcing part 340;
When the cooling channel portion is the wave cooling channel 341, take fig. 13 as an example, when the cooling medium flows from the left side to the right side of the cooling channel portion, because the two sides of the length direction of the battery piece 2 are closer to the outer side, therefore, in the heat dissipation process, the heat dissipation efficiency of the two sides of the length direction of the battery piece 2 is higher, and for this reason, the device sets up the capacity-increasing portion in the middle of the end plate 1, can improve the cooling and cooling effect that the wave cooling channel 341 is located in the middle of the end plate 1, further prevent that the heat productivity of the middle portion of the battery piece 2 can not be dissipated in time, and further effectively improve the heat dissipation effect on the battery piece 2.
Example 6: referring to fig. 5, 8, 11 and 14, a high-efficiency hydrogen fuel cell stack is basically the same as that of embodiments 2,3, 4 and 5, and further, an X-shaped flow blocking portion 4 is provided in the capacity increasing portion, openings 41 through which a cooling medium can pass are formed in four legs of the X-shaped flow blocking portion 4, and a plurality of flow blocking cavities 42 are formed between the X-shaped flow blocking portion 4 and the capacity increasing portion;
By installing the X-shaped choke part 4 in the capacity-increasing part, four legs on the X-shaped choke part 4 are all in contact with the inner wall in the capacity-increasing part, so that a plurality of choke cavities 42 can be formed in the capacity-increasing part;
The arrangement of the X-shaped flow blocking part 4 can further improve the bending resistance of the end plate 1, and the X-shaped flow blocking part 4 can form a plurality of approximate triangles in the capacity increasing part, so that the strength and the bending resistance of the end plate 1 are improved;
on the other hand, the choke cavity 42 formed by the X-shaped choke part 4 can increase the time for the cooling medium to stay in the cooling channel part and increase the circulation path, so that the contact time between the cooling medium and heat is increased, and the heat is effectively absorbed and carried out for heat dissipation;
Meanwhile, the X-shaped flow blocking part 4 can disturb the cooling medium (cooling gas or cooling liquid) when the cooling medium passes through, so that the heat contact area between the cooling medium and the battery piece 2 is effectively prevented from being too small when the cooling medium circulates in the cooling channel part, and therefore, the strength and the bending resistance of the end plate 1 can be improved, the residence time of the cooling medium can be prolonged, the circulation path can be prolonged, and meanwhile, the cooling medium can be disturbed, the medium in the middle of the cooling medium can be fully contacted with the heat and taken away, and the cooling rate is further improved.
Example 7: referring to fig. 15, a high-efficiency hydrogen fuel cell stack is basically the same as embodiments 2, 3, 4 and 5, and further, a rotatable turbine blade group 51 is disposed in the capacity-increasing portion, the turbine blade group 51 is rotatably connected to the connecting shaft 5, the connecting shaft 5 and the turbine blade group 51 are disposed in the capacity-increasing portion, and when the cooling medium passes through, the turbine blade group 51 is driven to rotate, and the cooling medium is disturbed and scattered, so that the medium in the middle of the cooling medium can be fully contacted with heat and taken away, and the cooling rate is further improved.
Example 8: referring to fig. 16, a production facility, including a high-efficiency hydrogen fuel cell stack, including welding manipulator, be used for with strengthening rib 3 welding is on end plate 1, in order to be convenient for strengthening rib 3 be connected with end plate 1, adopts welded mode in this embodiment, welds strengthening rib 3 on end plate 1, and then makes things convenient for strengthening rib 3 to set up on end plate 1, improves production efficiency.
According to the invention, the reinforcing ribs 3 are arranged on the end plate 1, so that the cooling channel part can be designed by utilizing the arrangement of the reinforcing ribs 3 while the thickness of the end plate 1 is not required to be increased, a cooling system is not required to be redesigned, the design cost is reduced, an air cooling channel can be provided, the compactness of the structural design is further improved, in addition, the strength and the bending resistance of the end plate 1 can be improved, the retention time and the circulation path of a cooling medium can be prolonged, the cooling medium can be disturbed, the medium in the middle of the cooling medium can be fully contacted with heat and taken away, and the cooling rate is further improved by arranging the X-shaped flow blocking part 4 or the turbine blade group 51 in the capacity increasing part.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present invention without departing from the scope of the invention.
Claims (10)
1. A high efficiency hydrogen fuel cell stack comprising end plates (1) on both sides of a cell sheet (2), characterized by further comprising:
The reinforcing ribs (3) are arranged on the length direction of the end plate (1) and protrude out of the surface of the end plate (1), and the reinforcing ribs (3) are paved on the surface of the end plate (1) and used for reinforcing the strength of the end plate (1) in the length direction;
A cooling channel part arranged in the reinforcing rib (3), wherein the cooling channel part is used for arranging a path for supplying cooling medium to circulate in the reinforcing rib (3), and a capacity increasing part for increasing the path of the cooling medium is arranged at the middle section of the cooling channel part positioned at the end plate (1);
and the connecting nozzles (10) are arranged at two ends of the reinforcing ribs (3) of the end plate (1), and one ends of the connecting nozzles (10) are communicated with the cooling channel part.
2. A high performance hydrogen fuel cell stack according to claim 1, wherein the reinforcing bars (3) comprise first end long strips (31) at both ends and wide area reinforcing portions (310) between the first end long strips (31) at both ends.
3. A high performance hydrogen fuel cell stack according to claim 2, wherein said cooling channel portion is a wide area cooling channel (311), said wide area cooling channel (311) being located in the first end long section (31) and the wide area reinforcement (310), said compatibilizer being located in the wide area reinforcement (310).
4. A high performance hydrogen fuel cell stack according to claim 1, wherein the reinforcing ribs (3) comprise second end long strips (32) at both ends and triangular reinforcing portions (320) between the second end long strips (32) at both ends, and adjacent triangular reinforcing portions (320) are communicated with each other by narrow long strips (321).
5. The high performance hydrogen fuel cell stack of claim 4, wherein said cooling channel portion is a triangular cooling channel (322), said triangular cooling channel (322) being located within said second end portion elongated portion (32), said triangular reinforcement portion (320), said narrow elongated portion (321), said compatibilizer being located within said triangular reinforcement portion (320), said narrow elongated portion (321) having a width less than a width of said second end portion elongated portion (32).
6. A high performance hydrogen fuel cell stack according to claim 1, wherein the reinforcing bars (3) comprise third end long strips (33) at both ends and diamond-shaped reinforcing portions (330) between the third end long strips (33) at both ends.
7. The high performance hydrogen fuel cell stack of claim 6, wherein said cooling channel portion is a diamond-shaped cooling channel (331), said diamond-shaped cooling channel (331) being located within a third end length (33), a diamond-shaped reinforcement (330), said compatibilizer being located within the diamond-shaped reinforcement (330).
8. A high performance hydrogen fuel cell stack according to claim 1, wherein the reinforcing bars (3) comprise fourth end long bar portions (34) at both ends and wave reinforcing portions (340) between the fourth end long bar portions (34) at both ends;
The cooling channel part is a wave cooling channel (341), the wave cooling channel (341) is positioned in the fourth end long strip part (34) and the wave reinforcing part (340), and the capacity increasing part is positioned in the wave reinforcing part (340).
9. A high-efficiency hydrogen fuel cell stack according to claim 3, 5, 7 or 8, wherein an X-shaped flow blocking portion (4) is provided in the capacity increasing portion, openings (41) through which a cooling medium can pass are formed in each of four legs of the X-shaped flow blocking portion (4), and a plurality of flow blocking cavities (42) are formed between the X-shaped flow blocking portion (4) and the capacity increasing portion.
10. A production plant comprising a high-efficiency hydrogen fuel cell stack according to claim 1, characterized by comprising welding robots for welding the reinforcing bars (3) to the end plates (1).
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| CN118054048B (en) | 2024-08-27 |
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