CN2893936Y - Composite runner plates for fuel cells - Google Patents

Abstract

A composite material runner plate for a fuel cell comprises a first substrate, a second substrate and at least one third substrate. The first substrate is a plate-shaped structure and made of plasticized materials, and comprises at least more than one recessed portion which are spaced from each other, wherein the recessed portions are formed on the surface of the first substrate. The second substrate is made of a material with good adhesion as a base material and has a frame structure. The second substrate comprises four frames and a hollow part, wherein the hollow space of the hollow part is used for placing the first substrate, and the first substrate is jointed with the four frames. The third substrate is made of metal material and has a sheet structure. The third substrate is shaped to correspond to the recess and is attached to the recess.

Description

Composite runner plates for fuel cells

technical field

The present invention relates to a flow channel plate for a fuel cell, in particular to a composite material flow channel plate for a fuel cell.

Background technique

The technical content of the known flow channel plate used in fuel cells focuses on the structure of the flow channels, so that the fuel can flow smoothly through the flow channels to the membrane electrode assemblies (Membrane ElectrodeAssemblies). With regard to the selection of the base material for making the known flow channel plate, the known techniques in this respect all show the use of a single type of base material, and the known flow channel plate is completely made of a single type of base material.

In view of the need to improve the known flow channel plate, the inventors of the present invention created a composite material flow channel plate to add multiple functions to the flow channel plate.

new content

The first purpose of the present invention is to provide a composite flow channel plate for fuel cells, which can avoid the problem of uneven temperature of the fuel supplied to the MEA and affect the power generation efficiency of the fuel cells.

The second purpose of the present invention is to provide a composite flow channel plate for fuel cells, which has anti-corrosion/acid resistance, and can avoid damage to the flow channel plate caused by fuel or electrochemical reaction products.

The third purpose of the present invention is to provide a composite material flow channel plate for fuel cells, combining at least two or more different materials, and making full use of the physical properties of these materials, which can reduce manufacturing costs and solve the problem of flow channel plates and collectors. Hermetic bonding of electrical layers (boards).

To achieve the above purpose of the present invention, the present invention at least provides a composite flow channel plate for fuel cells, including a first substrate, a second substrate, and at least one third substrate. The first substrate adopts a plasticized material as a base material and has a plate-like structure. The first substrate includes at least one recessed portion spaced apart from each other, wherein the recessed portions are formed on the surface of the first substrate. The second substrate is made of a material with good adhesiveness as a base material, and has a frame structure. The second substrate includes four frames and a hollow part, wherein the hollow space of the hollow part is used to place the first substrate, and the first substrate is joined with the four frames. The third substrate is made of metal material and has a sheet structure. The shape of the third substrate is corresponding to the recessed part and attached to the recessed part.

Description of drawings

FIG. 1 shows an exploded view of the first embodiment of the new composite channel plate for fuel cells.

Fig. 2 shows the top view of the first embodiment of the new composite flow channel plate for fuel cells.

FIG. 3 shows an exploded view of a second embodiment of the composite channel plate for fuel cells of the present invention.

Fig. 4 shows the top view of the second embodiment of the composite channel plate for fuel cells of the present invention.

FIG. 5 shows an exploded view of a third embodiment of the composite channel plate for fuel cells of the present invention.

Fig. 6 shows the top view of the third embodiment of the composite channel plate for fuel cells of the present invention.

Symbol Description

1 Composite flow channel plate 11 The first base plate

111 Recessed part 13 Second substrate

130 Circuit wiring 131 Frame

133 Hollow part 135 Runner structure

137 Fuel inlet 139 Fuel outlet

15 third substrate 151 protrusion

2 Composite flow channel plate 21 The first base plate

210 Circuit wiring 211 Recessed part

215 Runner Structure 217 Fuel Injection Port

219 Fuel outflow 25 Third base plate

251 Protrusions 3 Composite runner plate

31 First substrate 311 Depression

35 The third substrate 351 The first area

353 Second Area 355 Raised

Detailed ways

First embodiment:

FIG. 1 shows an exploded view of the first embodiment of the composite channel plate for fuel cells, and FIG. 2 shows a top view of the first embodiment of the composite channel plate for fuel cells. In the first embodiment, the composite flow channel plate 1 for fuel cells of the present invention includes: a first substrate 11 , a second substrate 13 and a third substrate 15 , which are described in the following text respectively. The first substrate 11 uses a plasticized material as the base material, and the reason for choosing the plasticized material is based on the manufacturing process of the first substrate 11 during molding. This process can have the advantages of flexibility and easy fabrication, and can reduce the overall manufacturing cost. cost. The base material of the first substrate 11 is, for example, a plastic material, a ceramic substrate, a printed circuit board, a polymer plasticized base material, or a composite material combining two or more of the aforementioned materials.

The first substrate 11 adopts a plate-like structure, and at least one recessed portion 111 is arranged on the surface of the first substrate 11, and these recessed portions 111 are arranged at a predetermined distance from each other, and at the same time, the recesses The installation position of the part 111 is to be able to correspond to these membrane electrode assemblies (Membrane Electrode Assemblies) respectively.

The second substrate 13 uses a material with good adhesiveness as the base material, and the reason for selecting a base material with good adhesiveness is based on the need for the second substrate 13 to have adhesiveness, thereby enabling the second The substrate 13 exerts the effect of high adhesiveness, and achieves a hermetic connection with the collector layer (plate) (not shown). The base material of the second substrate 13 is, for example, a plastic material, a ceramic substrate, a printed circuit board, a plasticized polymer base material, or a composite material combining two or more of the above materials.

The second substrate 13 adopts a frame structure, and the second substrate 13 includes four frames 131 and a hollow portion 133 . The hollow space of the hollow portion 133 is used to place the first substrate 11 , and the first substrate 11 is joined with the four frames 131 .

The second substrate 13 further includes: a flow channel structure 135 , a fuel injection port 137 , and a fuel outlet 139 . The surfaces of the frames 131 are excavated with more than one trenches to form the channel structure 135 . Fuel can flow through the recesses 111 from the fuel injection port 137 through the channel structure 135 , and then flow out to the outside from the fuel outlet 139 . The fuel injection port 137 and the fuel outflow port 139 are disposed on one side of the second substrate 13 , and the fuel injection port 137 and the fuel outflow port 139 communicate with the fuel channel structure 135 .

The third substrate 15 uses a metal material as the base material. Because the metal base material is selected, the third substrate 15 can have good heat conduction and electrical conduction effects at the same time, and can promote the fuel located in the recesses 111 to make the fuel temperature appear. uniform temperature effect. The base metal of the third substrate 15 is, for example, selected from aluminum, copper, aluminum alloy, copper alloy, stainless steel, gold, etc., or other single metal materials or other metal alloy materials. Furthermore, the surface of the third substrate 15 that is in contact with the fuel may be further treated with anti-corrosion, anti-acid and other treatments. For example, the surface of the third substrate 15 is coated with a layer of Teflon, or plated with a thin layer of gold, so that fuel or electrochemical reaction products can be avoided, and the third substrate 15 can be treated. cause havoc.

The third substrate 15 adopts a sheet structure, and the shape of the third substrate 15 corresponds to the concave portion 11 , and the third substrate 15 is attached to the concave portion 111 .

Moreover, the present invention can further choose to utilize any frame 131 of the second substrate 13, or all four frames 131, and further form circuit wiring 130 (Layout) on the surface of the frame 131 to conduct electric energy, or can utilize circuit wiring to Solder some electronic parts on it and form a circuit.

After the assembly of the first substrate 11, the second substrate 13, and the third substrates 15 of the above-mentioned first embodiment is completed, as shown in FIG. (OnePiece) structure.

Second embodiment:

FIG. 3 shows an exploded view of the second embodiment of the composite channel plate for fuel cells, and FIG. 4 shows a top view of the second embodiment of the composite channel plate for fuel cells. In the second embodiment, the composite flow channel plate 2 for fuel cells of the present invention includes: a first substrate 21 and a third substrate 25 , which are described in the following text respectively.

The first substrate 21 uses a material with good adhesiveness as the base material, and the reason for choosing a base material with good adhesiveness is based on the need for the first substrate 21 to have adhesiveness, so that the first substrate 21 can be further made The substrate 21 exerts the effect of high adhesiveness, and achieves airtight bondability with the current collector layer (plate) (not shown). The base material of the first substrate 21 is, for example, a plastic material, a ceramic substrate, a printed circuit board, a plasticized polymer base material, or a composite material combining two or more of the aforementioned materials.

The first substrate 21 adopts a plate-like structure, and at least one recessed portion 211 is arranged on the surface of the first substrate 21, and these recessed portions 211 are arranged at a predetermined distance from each other, and at the same time, the recesses The setting position of the part 211 is to be able to correspond to these membrane electrode assemblies (Membrane Electrode Assemblies) respectively.

Meanwhile, the first substrate 21 is provided with a channel structure 215 , a fuel injection port 217 , and a fuel outlet 219 . The surface of the first substrate 21 is dug to form a plurality of trenches to form the channel structure 215 . The fuel can flow through the recesses 211 from the fuel injection port 217 through the channel structure 215 , and then flow out from the fuel outlet 219 to the outside. The fuel injection port 217 and the fuel outflow port 219 are disposed on one side of the first substrate 21 , and the fuel injection port 217 and the fuel outflow port 219 communicate with the fuel channel structure 215 .

Furthermore, the present invention can further choose to use the surface of the first substrate 21 to form the circuit wiring 210 (Layout) to conduct electric energy, or use the circuit wiring to solder some electronic components thereon to form a circuit.

The third substrate 25 adopts a metal material as the base material. Because the metal base material is selected, the third substrate 25 can have good heat conduction and electrical conduction effects at the same time, and can promote the fuel located in the recesses 211 to make the fuel temperature appear. uniform temperature effect. The base metal of the third substrate 25 is, for example, selected from aluminum, copper, aluminum alloy, copper alloy, stainless steel, gold, etc., or other single metal materials, or other metal alloy materials. Furthermore, the surface of the third substrate 25 that is in contact with the fuel can be further treated with anti-corrosion, anti-acid and other treatments. For example, the surface of the third substrate 25 is coated with a layer of Teflon, or coated with a thin layer. In this way, the third substrate 25 can be prevented from being damaged by the fuel or the product of the electrochemical reaction.

The third substrate 25 adopts a sheet structure, and the shape of the third substrate 25 corresponds to the concave portion 211 , and the third substrate 25 is attached to the concave portion 211 .

After the assembly of the first substrate 21 and the third substrates 25 of the above-mentioned second embodiment is completed, as shown in FIG. structure.

Third embodiment:

FIG. 5 shows an exploded view of a third embodiment of the composite channel plate for fuel cells, and FIG. 6 shows a top view of the third embodiment of the composite channel plate for fuel cells. In the third embodiment, the composite flow channel plate 3 for fuel cells of the present invention includes: a first substrate 31 and a third substrate 35 , which are described in the following text respectively.

The first substrate 31 in the third embodiment is the same as the first substrate 21 in the second embodiment, therefore, the implementation means of the first substrate 31 in the third embodiment will not be described again.

The third substrate 35 adopts a metal material as the base material. Because the metal base material is selected, the third substrate 25 can have good heat conduction and electrical conduction effects at the same time, and can promote the fuel located in the recesses 311 to make its fuel temperature appear. uniform temperature effect. The base metal of the third substrate 35 is, for example, selected from aluminum, copper, aluminum alloy, copper alloy, stainless steel, gold, etc., or other single metal materials or other metal alloy materials. Furthermore, the surface of the third substrate 35 that is in contact with the fuel can be further treated with anti-corrosion, anti-acid and other treatments. For example, the surface of the third substrate 35 is coated with a layer of Teflon, or coated with a thin layer. In this way, the third substrate 35 can be prevented from being damaged by the fuel or the product of the electrochemical reaction.

The third substrate 35 adopts a sheet structure, and the third substrate 25 has a first region 351 and a second region 353, wherein the shape of the first region 351 is corresponding to the recessed portion 311, and the first region 351 is bonded to Recess 311 .

The second region 353 of the third substrate 35 protrudes from the first substrate 31 to the outside, and the heat located in the concave portion 311 can be conducted to the outside through the second region 353 .

After the assembly of the first substrate 31 and the third substrates 35 of the above-mentioned third embodiment is completed, as shown in FIG. structure.

Furthermore, the concave portion 111 of the first substrate 11 in the first embodiment is illustrated by taking a square flat-bottomed groove as an example. At this time, under the example of implementing the concave portion 111 of a square flat-bottomed groove, the third substrate 15 is further provided with at least one protrusion 151, and the function of these protrusions 151 is to give way to the fuel in the concave portion 111 , can flow into the membrane electrode groups more uniformly.

Furthermore, the concave portion 211 of the first substrate 21 in the second embodiment is illustrated by taking a square flat-bottomed groove as an example. At this time, under the example of implementing the concave portion 211 of a square flat-bottomed groove, the third substrate 25 is further provided with at least one protrusion 251, and the function of these protrusions 251 is to give way to the fuel in the concave portion 211, It can flow into these membrane electrode groups more uniformly.

Furthermore, the recessed portion 311 of the first substrate 31 in the third embodiment is illustrated by taking a square flat-bottomed groove as an example. At this time, in the example of implementing the recessed portion 311 of a square flat-bottomed groove, the first region 351 of the third substrate 35 is further provided with at least one protrusion 355, and the function of these protrusions 355 is to give way to the recess. The fuel in the section 311 can flow into the MEAs more uniformly.

The above-mentioned depressions 111, 211, 311 can also be changed to adopt a corrugated board structure composed of several continuous waves, or to adopt a honeycomb structure, or to adopt a line meandering on the depressions 111, 211, 311. The serpentine structure formed by the small ridges of the area.

Due to the combination of the physical properties of various base materials, the composite flow channel plate of the present invention can be used in the temperature uniformity performance of the fuel, the performance of corrosion resistance/acid resistance, and the adhesion performance of the joint collector layer (plate), etc. Both can show excellent effects, therefore, the effect of the new type is far better than that of the flow channel plate made of a single material.

The above-mentioned preferred specific embodiments are only examples for convenience of description, and the scope of protection claimed by the present invention should be based on the claims of the present application, rather than limited to the above-mentioned embodiments.

Claims (14)

1. A composite flow channel plate for fuel cells, characterized in that it comprises: A first substrate using a plasticized material as a base material is a plate-like structure and includes at least one recessed portion spaced apart from each other, wherein the recessed portions are formed on the surface of the first substrate; A second substrate with a good adhesive material as the base material is a frame structure, and includes four frames and a hollow part, wherein the hollow space of the hollow part is used to place the first substrate, and the first The substrate is bonded to the four frames; At least one third substrate with metal material as the base material is a sheet structure, and the shape of the third substrate is corresponding to the recessed part, wherein the third substrate is bonded to the recessed part. 2. The composite flow channel plate for fuel cells as claimed in claim 1, wherein the material of the first substrate is selected from a plastic material, a ceramic substrate, a printed circuit substrate, a polymer Plasticized base material or compound material combining two or more materials. 3. The composite flow channel plate for fuel cells as claimed in claim 1, wherein the material of the second substrate is selected from a plastic material, a ceramic substrate, a printed circuit substrate, a high Molecular plasticized base material or composite material combining two or more materials. 4. The composite flow channel plate for fuel cells according to claim 1, wherein the second substrate further comprises: a flow channel structure, a fuel injection port, and a fuel outlet, wherein the fuel The injection port and the fuel outlet are arranged on one side of the second substrate, and the channel structure is arranged on the surface of the frames. 5. The composite flow channel plate for fuel cells according to claim 1, wherein the second substrate further optionally includes: a circuit wiring, wherein the circuit wiring is formed on the surface of the frames . 6. The composite flow channel plate for fuel cells as claimed in claim 1, wherein the material of the third substrate is selected from the group consisting of aluminum, copper, aluminum alloy, copper alloy, and Stainless steel, one gold, one other single metal, one other metal alloy. 7 . The composite channel plate for fuel cells as claimed in claim 1 , wherein the surface of the third substrate can be further selected as a metal surface treated with anti-corrosion and/or anti-acid treatment. 8 . 8. A composite flow channel plate for fuel cells, characterized in that it comprises: A first substrate using a material with good adhesion as a base material is a plate-shaped structure and includes at least one recessed portion spaced apart from each other, wherein the recessed portions are formed on the surface of the first substrate ; At least one third substrate with metal material as the base material is a sheet structure, and the shape of the third substrate is corresponding to the recessed part, wherein the third substrate is bonded to the recessed part. 9. A composite flow channel plate for fuel cells, characterized in that it comprises: A first substrate using a material with good adhesion as a base material is a plate-shaped structure and includes at least one recessed portion spaced apart from each other, wherein the recessed portions are formed on the surface of the first substrate ; At least one third substrate with a metal material as the base material is a sheet structure, and the third substrate has a first region and a second region, wherein the shape of the first region corresponds to the concave portion , and the first region is attached to the recessed portion, and the second region protrudes from the first substrate to the outside. 10. The composite flow channel plate for fuel cells as claimed in claim 8 or 9, wherein the material of the first substrate is selected from a plastic material, a ceramic substrate, a printed circuit substrate, A polymer plasticized base material or a composite material composed of two or more materials. 11. The composite flow channel plate for fuel cells as claimed in claim 8 or 9, wherein the material of the third substrate is selected from an aluminum, a copper, an aluminum alloy, a copper alloy , one stainless steel, one gold, one other single metal, one other metal alloy. 12. The composite flow channel plate for fuel cells according to claim 8 or 9, wherein the surface of the third substrate can be further selected as a metal surface treated with anti-corrosion and/or anti-acid treatment. 13. The composite flow channel plate for fuel cells according to claim 8 or 9, wherein the first substrate further comprises: a flow channel structure, a fuel injection port, and a fuel outlet, wherein The fuel injection port and the fuel outlet are arranged on one side of the first substrate, and the channel structure is arranged on the surface of the first substrate. 14. The composite flow channel plate for fuel cells according to claim 8 or 9, wherein the first substrate further optionally includes: a circuit wiring, wherein the circuit wiring is formed on the first the surface of the substrate.

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