CN109768285B - Proton exchange membrane fuel cell bipolar plate with uniform heat conduction - Google Patents
Proton exchange membrane fuel cell bipolar plate with uniform heat conduction Download PDFInfo
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- CN109768285B CN109768285B CN201811549869.6A CN201811549869A CN109768285B CN 109768285 B CN109768285 B CN 109768285B CN 201811549869 A CN201811549869 A CN 201811549869A CN 109768285 B CN109768285 B CN 109768285B
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Abstract
The invention belongs to the technical field of fuel cells, and particularly relates to a proton exchange membrane fuel cell bipolar plate with uniform heat conduction, which comprises a diffusion layer and a catalysis layer, wherein the opposite surfaces of the diffusion layer and the catalysis layer are fixedly communicated through a phase change heat conduction insulating tube, a plurality of phase change heat conduction insulating tubes are distributed between the diffusion layer and the catalysis layer in a rectangular array mode, a proton exchange membrane is fixedly sleeved on the outer surface of the middle part of each phase change heat conduction insulating tube, the proton exchange membrane is positioned between the diffusion layer and the catalysis layer, and positioning frames are fixedly arranged on the opposite surfaces of the diffusion layer and the catalysis layer. This proton exchange membrane fuel cell bipolar plate that thermal conductance is even passes through the fixed intercommunication of phase transition heat conduction insulating tube through setting up the relative surface of diffusion layer and catalysis layer, has reached and has carried out the effect of conduction of leading diffusion layer and the inside heat of catalysis layer, prevents that the heat in diffusion layer and the catalysis layer is long-pending to cause negative effects to the battery to the technical problem that current fuel cell thermal conductivity is low has been solved.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a proton exchange membrane fuel cell bipolar plate with uniform heat conduction.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel cells use fuel and oxygen as raw materials; meanwhile, no mechanical transmission part is arranged, so that no noise pollution is caused, and the discharged harmful gas is less. It follows that fuel cells are the most promising power generation technology from the viewpoint of energy conservation and ecological environment conservation.
The flow channels adopted by the current fuel cell during heat conduction are mainly divided into a single serpentine flow channel, a plurality of serpentine flow channels, an interdigital flow channel and a bionic fractal heterogeneous flow channel, in the bionic fractal heterogeneous flow channel, fluid flows in a smooth pipeline, the pressure drop of the fluid is further reduced, and the fluid distribution of the branch circuits is uniform to the maximum extent.
Disclosure of Invention
Based on the technical problems of low thermal conductivity, low recovery rate and heavier mass of the existing fuel cell, the invention provides a proton exchange membrane fuel cell bipolar plate with uniform thermal conductivity.
The invention provides a proton exchange membrane fuel cell bipolar plate with uniform heat conduction, which is positioned on the back surface of a catalyst layer of a proton exchange membrane fuel cell, wherein the proton exchange membrane fuel cell sequentially comprises a proton exchange membrane, catalyst layers 2, a bipolar plate and diffusion layers 1 from the center to two sides, the opposite surfaces of the two catalyst layers are fixedly connected with a proton exchange membrane, the back surfaces of the two catalyst layers are respectively and fixedly connected with the opposite surfaces of the two diffusion layers, the opposite surfaces of the catalyst layers are fixedly connected with phase change heat conduction insulating pipes, the surfaces of the phase change heat conduction insulating pipes penetrate through a proton exchange membrane, a plurality of phase change heat conduction insulating pipes are distributed on the surfaces of the catalyst layers in a rectangular array mode, and the bipolar plate is divided into a cathode plate 6 and an anode plate 7 according to the.
The surfaces of the diffusion layer and the catalysis layers, which are back to back, are fixedly provided with a positioning frame, the inner wall of the positioning frame and the surfaces of the two catalysis layers, which are back to back, are respectively and fixedly connected with a cathode plate and an anode plate, and the plurality of cathode plates and the anode plates are respectively distributed on the surfaces of the catalysis layers, which are back to back, in a rectangular array.
The inside difference fixed mounting of diffusion layer has honeycomb duct and fluid pipe, and the top of honeycomb duct and the fixed intercommunication of the interior diapire of phase transition heat conduction insulating tube, the top of fluid pipe and the fixed intercommunication of the inner wall of honeycomb duct.
Preferably, the inner wall of the phase-change heat-conducting insulating tube is fixedly bonded with a waterproof film through a heat-conducting adhesive layer, heat-conducting adhesive is arranged inside the heat-conducting adhesive layer, and the flow guide tube penetrates through the inner side surface of the waterproof film.
Preferably, the surface of the diffusion layer is provided with a water outlet groove, the inner wall of the water outlet groove is respectively communicated with the bottom end of the flow guide pipe and the bottom end of the fluid pipe, the fluid pipes are divided into a first fluid pipe, a second fluid pipe, a third fluid pipe and a N fluid pipe, and the surfaces of the first fluid pipe, the second fluid pipe, the third fluid pipe and the N fluid pipe are in arc shapes.
Preferably, the first fluid pipe, the second fluid pipe, the third fluid pipe and the connection part of the fluid pipe N and the flow guide pipe are spirally distributed.
Preferably, the manufacturing method of the cathode plate and the anode plate comprises the step S1 of taking 65% natural rubber to be made into a plate shape; s2, hollowing the middle part of the plate-shaped natural rubber, and filling 20% of conductive particles; s3, forming circular through holes in the surfaces of two sides of the platy natural rubber, fixedly inserting conductive graphite rods into the inner walls of the through holes, and enabling the surfaces of the conductive graphite rods to be in contact with conductive particles.
Preferably, the inner wall of the hollow natural rubber in the step S2 is coated with a layer of carbon black, and the thickness of the carbon black is 1mm to 3 mm.
Preferably, in step S3, the insertion position of the surface of the conductive graphite rod and the inner wall of the through hole is filled with a heat conduction glue.
Preferably, 10% -15% of conductive adhesive is added into the conductive particles in step S2, the mixture is uniformly stirred, and the mixture is poured into the hollow position of the natural rubber and pressed by a pressing bar with the length and width matched with those of the hollow position, so that the conductive particles and the surface of the conductive graphite rod are bonded into a whole.
Preferably, 3% -5% of anti-aging agent, 1% -2% of dimethyl silicone oil and 3% of white carbon black are respectively added into the conductive adhesive.
The beneficial effects of the invention are as follows:
1. through setting up the equal fixedly connected with phase transition heat conduction insulating tube in the relative surface of catalysis layer, reached and led the effect of conduction with the inside heat of diffusion layer and catalysis layer, prevented that the heat in diffusion layer and the catalysis layer is long-pending to cause negative effects to the battery to the technical problem that current fuel cell heat conductivity is low has been solved.
2. The flow guide pipe and the fluid pipe are respectively and fixedly arranged in the diffusion layer, and the joints of the fluid pipe I, the fluid pipe II, the fluid pipe III and the fluid pipe N with the flow guide pipe are spirally distributed, so that the bionic fractal isomerism flow passage is spatially and stereoscopically distributed, the effect of shunting, absorbing heat and conducting heat aiming at different water flow rates can be realized, when the water flow rate is smaller, can flow in the fluid pipe I with a lower port, the fluid pipe II, the fluid pipe III and the fluid pipe N are used for the circulation of reaction gas, when the water flow is large, the water is divided by the first fluid pipe and the second fluid pipe to achieve the purpose of flow division, the third fluid pipe and the N fluid pipe are used for the circulation of reaction gas, the plurality of fluid pipes are fully utilized to guide the flow of the water, meanwhile, the pipe wall absorbs certain heat, therefore, the technical problems of low heat conductivity, low recovery rate and heavier quality of the conventional fuel cell are solved.
3. By arranging the manufacturing method of the cathode plate and the anode plate, the function of light conductivity by using the conductive rubber is achieved, the weight is reduced while the conductivity of the cathode plate and the anode plate is kept, and the technical problem that the existing fuel cell is heavier in weight is solved.
Drawings
FIG. 1 is a schematic view of a PEMFC bipolar plate with uniform thermal conductivity according to the present invention;
FIG. 2 is a perspective view of the structure of the fluid tube of the PEMFC bipolar plate with uniform thermal conductivity;
FIG. 3 is a cross-sectional view of the diffusion layer structure on both sides of a PEMFC bipolar plate with uniform thermal conductivity according to the present invention;
FIG. 4 is a sectional view of the diffusion layer structure at both sides of the bipolar plate of the PEMFC with uniform thermal conductivity showing a small water flow rate;
fig. 5 is a cross-sectional view of the diffusion layer structure on both sides of the bipolar plate of the pem fuel cell with uniform thermal conductivity according to the present invention when the water flow is large.
In the figure: 1. a diffusion layer; 2. a catalytic layer; 3. a phase change heat conducting insulating tube; 4. a proton exchange membrane; 5. a positioning frame; 6. a cathode plate; 7. an anode plate; 8. a flow guide pipe; 9. a first fluid pipe; 91. a second fluid pipe; 92. a fluid pipe III; 93. a fluid pipe N; 10. a waterproof film; 11. a heat-conducting adhesive layer; 12. a water outlet groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a proton exchange membrane fuel cell bipolar plate with uniform thermal conductivity is shown in fig. 1 and located on the surfaces of opposite catalyst layers, the proton exchange membrane fuel cell includes a proton exchange membrane, catalyst layers 2, a bipolar plate and diffusion layers 1 from the center to the two sides, the surfaces of the two catalyst layers 2 opposite to each other are fixedly connected with a proton exchange membrane 4, the surfaces of the two catalyst layers 2 opposite to each other are fixedly connected with the surfaces of the two diffusion layers 1 opposite to each other, the surfaces of the catalyst layers 2 opposite to each other are fixedly connected with phase change thermal conductive insulating tubes 3, the surfaces of the phase change thermal conductive insulating tubes 3 penetrate through the proton exchange membrane 4, the phase change thermal conductive insulating tubes 3 are distributed on the surfaces of the catalyst layers 2 in a rectangular array manner, and the bipolar plate is divided into a bipolar plate 6 and a.
As shown in fig. 2, the phase-change heat-conducting insulating tubes 3 are fixedly connected to the opposite surfaces of the catalyst layer 2, so that the effect of conducting heat inside the diffusion layer 1 and the catalyst layer 2 in a guiding manner is achieved, and the heat inside the diffusion layer 1 and the catalyst layer 2 is prevented from being accumulated to cause negative influence on the cell, thereby solving the technical problem of low heat conductivity of the existing fuel cell; the thermally conductive phase change material PC is a heat enhancing polymer designed to minimize thermal resistance between the power consuming electronic device and the heat sink to which it is attached.
As shown in fig. 1-2, the opposite surfaces of the diffusion layer 1 and the catalytic layers 2 are both fixedly provided with a positioning frame 5, the inner wall of the positioning frame 5 and the opposite surfaces of the two catalytic layers 2 are respectively and fixedly connected with a cathode plate 6 and an anode plate 7, and the plurality of cathode plates 6 and anode plates 7 are respectively distributed on the opposite surfaces of the catalytic layers 2 in a rectangular array manner.
The manufacturing method of the cathode plate 6 and the anode plate 7 comprises the step S1 of taking 65 percent of natural rubber to be made into a plate shape; s2, hollowing the middle part of the plate-shaped natural rubber, and filling 20% of conductive particles; s3, forming circular through holes in the surfaces of two sides of the plate-shaped natural rubber, fixedly inserting conductive graphite rods into the inner walls of the through holes, and enabling the surfaces of the conductive graphite rods to be in contact with conductive particles; coating a layer of carbon black on the inner wall of the hollow natural rubber in the step S2, wherein the thickness of the carbon black is 1mm-3 mm; in the step S3, filling heat conduction glue in the splicing position of the surface of the conductive graphite rod and the inner wall of the through hole; adding 10% -15% of conductive adhesive into the conductive particles in the step S2, uniformly stirring, pouring the conductive adhesive into the hollow position of the natural rubber, and pressing the conductive particles by a pressing strip with the length and width matched with those of the hollow position to bond the conductive particles and the surface of the conductive graphite rod into a whole; 3 to 5 percent of anti-aging agent, 1 to 2 percent of dimethyl silicon oil and 3 percent of white carbon black are respectively added into the conductive adhesive.
By arranging the manufacturing method of the cathode plate and the anode plate, the function of light conductivity by using conductive rubber is achieved, the weight is reduced while the conductivity of the cathode plate 6 and the anode plate 7 is kept, and the technical problem that the existing fuel cell is heavy in weight is solved.
A flow guide pipe 8 and a fluid pipe are respectively and fixedly arranged in the diffusion layer 1; the inner wall of the phase-change heat-conducting insulating tube 3 is fixedly bonded with a waterproof film 10 through a heat-conducting adhesive layer 11, a heat-conducting adhesive is arranged inside the heat-conducting adhesive layer 11, and the heat-conducting double-faced adhesive is formed by filling heat-conducting ceramic powder with an acrylic polymer and compounding the heat-conducting ceramic powder with an organic silicon adhesive. Has high heat conductivity and insulation, and has flexibility, compressibility, conformability, and strong adhesiveness. The temperature adaptive range is large, uneven surfaces can be filled, the heat source device and the radiating fins can be tightly and firmly attached, and heat can be quickly conducted out.
As shown in fig. 3, the flow guide pipe 8 penetrates to the inner surface of the waterproof film 10; the surface of the diffusion layer 1 is provided with a water outlet groove 12, the inner wall of the water outlet groove 12 is respectively communicated with the bottom end of the flow guide pipe 8 and the bottom end of the fluid pipe, the fluid pipe is divided into a first fluid pipe 9, a second fluid pipe 91, a third fluid pipe 92 and a fluid pipe N93, and the surfaces of the first fluid pipe 9, the second fluid pipe 91, the third fluid pipe 92 and the fluid pipe N93 are in an arc shape; the joints of the fluid pipe I9, the fluid pipe II 91, the fluid pipe III 92 and the fluid pipe N93 with the flow guide pipe 8 are spirally distributed; the top of honeycomb duct 8 and the interior diapire fixed intercommunication of phase transition heat conduction insulating tube 3, the top of fluid pipe and the fixed intercommunication of honeycomb duct 8's inner wall.
As shown in fig. 3-5, the draft tube 8 and the fluid tube are respectively and fixedly installed inside the diffusion layer 1, the connection parts of the first fluid tube 9, the second fluid tube 91, the third fluid tube 92 and the N93 with the draft tube 8 are spirally distributed, so that the bionic fractal heterogeneous flow channel is spatially and three-dimensionally distributed, the effects of shunting, absorbing heat and conducting heat for different water flow rates can be achieved, when the water flow rate is small, as shown in fig. 4, the water can flow in the first fluid tube 9 with a lower port, as shown in fig. 4, the second fluid tube 91, the third fluid tube 92 and the N93 are used for flowing of the reaction gas, when the water flow rate is large, as shown in fig. 5, the water is simultaneously flowed out by the first fluid tube 9 and the second fluid tube 91 to achieve shunting, as the third fluid tube 92 and the N93 are used for flowing of the reaction gas, a plurality, therefore, the technical problems of low heat conductivity, low recovery rate and heavier quality of the conventional fuel cell are solved.
Example one
Referring to fig. 1-5, a proton exchange membrane fuel cell bipolar plate with uniform thermal conductivity is shown in fig. 1 and located on the surfaces of opposite catalyst layers, the proton exchange membrane fuel cell includes a proton exchange membrane, catalyst layers 2, a bipolar plate and diffusion layers 1 from the center to the two sides, the surfaces of the two catalyst layers 2 opposite to each other are fixedly connected with a proton exchange membrane 4, the surfaces of the two catalyst layers 2 opposite to each other are fixedly connected with the surfaces of the two diffusion layers 1 opposite to each other, the surfaces of the catalyst layers 2 opposite to each other are fixedly connected with phase change thermal conductive insulating tubes 3, the surfaces of the phase change thermal conductive insulating tubes 3 penetrate through the proton exchange membrane 4, the phase change thermal conductive insulating tubes 3 are distributed on the surfaces of the catalyst layers 2 in a rectangular array manner, and the bipolar plate is divided into a bipolar plate 6 and a.
As shown in fig. 2, the phase-change heat-conducting insulating tubes 3 are fixedly connected to the opposite surfaces of the catalyst layer 2, so that the effect of conducting heat inside the diffusion layer 1 and the catalyst layer 2 in a guiding manner is achieved, and the heat inside the diffusion layer 1 and the catalyst layer 2 is prevented from being accumulated to cause negative influence on the cell, thereby solving the technical problem of low heat conductivity of the existing fuel cell; the thermally conductive phase change material PC is a heat enhancing polymer designed to minimize thermal resistance between the power consuming electronic device and the heat sink to which it is attached.
As shown in fig. 1-2, the opposite surfaces of the diffusion layer 1 and the catalytic layers 2 are both fixedly provided with a positioning frame 5, the inner wall of the positioning frame 5 and the opposite surfaces of the two catalytic layers 2 are respectively and fixedly connected with a cathode plate 6 and an anode plate 7, and the plurality of cathode plates 6 and anode plates 7 are respectively distributed on the opposite surfaces of the catalytic layers 2 in a rectangular array manner.
The manufacturing method of the cathode plate 6 and the anode plate 7 comprises the step S1 of taking 65 percent of natural rubber to be made into a plate shape; s2, hollowing the middle part of the plate-shaped natural rubber, and filling 20% of conductive particles; s3, forming circular through holes in the surfaces of two sides of the plate-shaped natural rubber, fixedly inserting conductive graphite rods into the inner walls of the through holes, and enabling the surfaces of the conductive graphite rods to be in contact with conductive particles; coating a layer of carbon black on the inner wall of the hollow natural rubber in the step S2, wherein the thickness of the carbon black is 1 mm; in the step S3, filling heat conduction glue in the splicing position of the surface of the conductive graphite rod and the inner wall of the through hole; adding 10% of conductive adhesive into the conductive particles in the step S2, uniformly stirring, pouring the conductive adhesive into the hollow position of the natural rubber, and pressing the conductive particles by using a pressing strip with the length and width matched with the hollow position to bond the conductive particles and the surface of the conductive graphite rod into a whole; 3 percent of anti-aging agent, 1 percent of dimethyl silicone oil and 3 percent of white carbon black are respectively added into the conductive adhesive.
By arranging the manufacturing method of the cathode plate and the anode plate, the function of light conductivity by using conductive rubber is achieved, the weight is reduced while the conductivity of the cathode plate 6 and the anode plate 7 is kept, and the technical problem that the existing fuel cell is heavy in weight is solved.
A flow guide pipe 8 and a fluid pipe are respectively and fixedly arranged in the diffusion layer 1; the inner wall of the phase-change heat-conducting insulating tube 3 is fixedly bonded with a waterproof film 10 through a heat-conducting adhesive layer 11, a heat-conducting adhesive is arranged inside the heat-conducting adhesive layer 11, and the heat-conducting double-faced adhesive is formed by filling heat-conducting ceramic powder with an acrylic polymer and compounding the heat-conducting ceramic powder with an organic silicon adhesive. Has high heat conductivity and insulation, and has flexibility, compressibility, conformability, and strong adhesiveness. The temperature adaptive range is large, uneven surfaces can be filled, the heat source device and the radiating fins can be tightly and firmly attached, and heat can be quickly conducted out.
As shown in fig. 3, the flow guide pipe 8 penetrates to the inner surface of the waterproof film 10; the surface of the diffusion layer 1 is provided with a water outlet groove 12, the inner wall of the water outlet groove 12 is respectively communicated with the bottom end of the flow guide pipe 8 and the bottom end of the fluid pipe, the fluid pipe is divided into a first fluid pipe 9, a second fluid pipe 91, a third fluid pipe 92 and a fluid pipe N93, and the surfaces of the first fluid pipe 9, the second fluid pipe 91, the third fluid pipe 92 and the fluid pipe N93 are in an arc shape; the joints of the fluid pipe I9, the fluid pipe II 91, the fluid pipe III 92 and the fluid pipe N93 with the flow guide pipe 8 are spirally distributed; the top of honeycomb duct 8 and the interior diapire fixed intercommunication of phase transition heat conduction insulating tube 3, the top of fluid pipe and the fixed intercommunication of honeycomb duct 8's inner wall.
As shown in fig. 3-5, the draft tube 8 and the fluid tube are respectively and fixedly installed inside the diffusion layer 1, the connection parts of the first fluid tube 9, the second fluid tube 91, the third fluid tube 92 and the N93 with the draft tube 8 are spirally distributed, so that the bionic fractal heterogeneous flow channel is spatially and three-dimensionally distributed, the effects of shunting, absorbing heat and conducting heat for different water flow rates can be achieved, when the water flow rate is small, as shown in fig. 4, the water can flow in the first fluid tube 9 with a lower port, as shown in fig. 4, the second fluid tube 91, the third fluid tube 92 and the N93 are used for flowing of the reaction gas, when the water flow rate is large, as shown in fig. 5, the water is simultaneously flowed out by the first fluid tube 9 and the second fluid tube 91 to achieve shunting, as the third fluid tube 92 and the N93 are used for flowing of the reaction gas, a plurality, thereby solving the technical problems of low heat conductivity, low recovery rate and heavier quality of the existing fuel cell
Example two
Referring to fig. 1-5, a proton exchange membrane fuel cell bipolar plate with uniform thermal conductivity is shown in fig. 1 and located on the surfaces of opposite catalyst layers, the proton exchange membrane fuel cell includes a proton exchange membrane, catalyst layers 2, a bipolar plate and diffusion layers 1 from the center to the two sides, the surfaces of the two catalyst layers 2 opposite to each other are fixedly connected with a proton exchange membrane 4, the surfaces of the two catalyst layers 2 opposite to each other are fixedly connected with the surfaces of the two diffusion layers 1 opposite to each other, the surfaces of the catalyst layers 2 opposite to each other are fixedly connected with phase change thermal conductive insulating tubes 3, the surfaces of the phase change thermal conductive insulating tubes 3 penetrate through the proton exchange membrane 4, the phase change thermal conductive insulating tubes 3 are distributed on the surfaces of the catalyst layers 2 in a rectangular array manner, and the bipolar plate is divided into a bipolar plate 6 and a.
As shown in fig. 2, the phase-change heat-conducting insulating tubes 3 are fixedly connected to the opposite surfaces of the catalyst layer 2, so that the effect of conducting heat inside the diffusion layer 1 and the catalyst layer 2 in a guiding manner is achieved, and the heat inside the diffusion layer 1 and the catalyst layer 2 is prevented from being accumulated to cause negative influence on the cell, thereby solving the technical problem of low heat conductivity of the existing fuel cell; the thermally conductive phase change material PC is a heat enhancing polymer designed to minimize thermal resistance between the power consuming electronic device and the heat sink to which it is attached.
As shown in fig. 1-2, the opposite surfaces of the diffusion layer 1 and the catalytic layers 2 are both fixedly provided with a positioning frame 5, the inner wall of the positioning frame 5 and the opposite surfaces of the two catalytic layers 2 are respectively and fixedly connected with a cathode plate 6 and an anode plate 7, and the plurality of cathode plates 6 and anode plates 7 are respectively distributed on the opposite surfaces of the catalytic layers 2 in a rectangular array manner.
The manufacturing method of the cathode plate 6 and the anode plate 7 comprises the step S1 of taking 65 percent of natural rubber to be made into a plate shape; s2, hollowing the middle part of the plate-shaped natural rubber, and filling 20% of conductive particles; s3, forming circular through holes in the surfaces of two sides of the plate-shaped natural rubber, fixedly inserting conductive graphite rods into the inner walls of the through holes, and enabling the surfaces of the conductive graphite rods to be in contact with conductive particles; coating a layer of carbon black on the inner wall of the hollow natural rubber in the step S2, wherein the thickness of the carbon black is 2 mm; in the step S3, filling heat conduction glue in the splicing position of the surface of the conductive graphite rod and the inner wall of the through hole; adding 12% of conductive adhesive into the conductive particles in the step S2, uniformly stirring, pouring the conductive adhesive into the hollow position of the natural rubber, and pressing the conductive particles by using a pressing strip with the length and width matched with the hollow position to bond the conductive particles and the surface of the conductive graphite rod into a whole; 4 percent of anti-aging agent, 1.5 percent of dimethyl silicone oil and 3 percent of white carbon black are respectively added into the conductive adhesive.
By arranging the manufacturing method of the cathode plate and the anode plate, the function of light conductivity by using conductive rubber is achieved, the weight is reduced while the conductivity of the cathode plate 6 and the anode plate 7 is kept, and the technical problem that the existing fuel cell is heavy in weight is solved.
A flow guide pipe 8 and a fluid pipe are respectively and fixedly arranged in the diffusion layer 1; the inner wall of the phase-change heat-conducting insulating tube 3 is fixedly bonded with a waterproof film 10 through a heat-conducting adhesive layer 11, a heat-conducting adhesive is arranged inside the heat-conducting adhesive layer 11, and the heat-conducting double-faced adhesive is formed by filling heat-conducting ceramic powder with an acrylic polymer and compounding the heat-conducting ceramic powder with an organic silicon adhesive. Has high heat conductivity and insulation, and has flexibility, compressibility, conformability, and strong adhesiveness. The temperature adaptive range is large, uneven surfaces can be filled, the heat source device and the radiating fins can be tightly and firmly attached, and heat can be quickly conducted out.
As shown in fig. 3, the flow guide pipe 8 penetrates to the inner surface of the waterproof film 10; the surface of the diffusion layer 1 is provided with a water outlet groove 12, the inner wall of the water outlet groove 12 is respectively communicated with the bottom end of the flow guide pipe 8 and the bottom end of the fluid pipe, the fluid pipe is divided into a first fluid pipe 9, a second fluid pipe 91, a third fluid pipe 92 and a fluid pipe N93, and the surfaces of the first fluid pipe 9, the second fluid pipe 91, the third fluid pipe 92 and the fluid pipe N93 are in an arc shape; the joints of the fluid pipe I9, the fluid pipe II 91, the fluid pipe III 92 and the fluid pipe N93 with the flow guide pipe 8 are spirally distributed; the top of honeycomb duct 8 and the interior diapire fixed intercommunication of phase transition heat conduction insulating tube 3, the top of fluid pipe and the fixed intercommunication of honeycomb duct 8's inner wall.
As shown in fig. 3-5, the draft tube 8 and the fluid tube are respectively and fixedly installed inside the diffusion layer 1, the connection parts of the first fluid tube 9, the second fluid tube 91, the third fluid tube 92 and the N93 with the draft tube 8 are spirally distributed, so that the bionic fractal heterogeneous flow channel is spatially and three-dimensionally distributed, the effects of shunting, absorbing heat and conducting heat for different water flow rates can be achieved, when the water flow rate is small, as shown in fig. 4, the water can flow in the first fluid tube 9 with a lower port, as shown in fig. 4, the second fluid tube 91, the third fluid tube 92 and the N93 are used for flowing of the reaction gas, when the water flow rate is large, as shown in fig. 5, the water is simultaneously flowed out by the first fluid tube 9 and the second fluid tube 91 to achieve shunting, as the third fluid tube 92 and the N93 are used for flowing of the reaction gas, a plurality, therefore, the technical problems of low heat conductivity, low recovery rate and heavier quality of the conventional fuel cell are solved.
EXAMPLE III
Referring to fig. 1-5, a proton exchange membrane fuel cell bipolar plate with uniform thermal conductivity is shown in fig. 1 and located on the surfaces of opposite catalyst layers, the proton exchange membrane fuel cell includes a proton exchange membrane, catalyst layers 2, a bipolar plate and diffusion layers 1 from the center to the two sides, the surfaces of the two catalyst layers 2 opposite to each other are fixedly connected with a proton exchange membrane 4, the surfaces of the two catalyst layers 2 opposite to each other are fixedly connected with the surfaces of the two diffusion layers 1 opposite to each other, the surfaces of the catalyst layers 2 opposite to each other are fixedly connected with phase change thermal conductive insulating tubes 3, the surfaces of the phase change thermal conductive insulating tubes 3 penetrate through the proton exchange membrane 4, the phase change thermal conductive insulating tubes 3 are distributed on the surfaces of the catalyst layers 2 in a rectangular array manner, and the bipolar plate is divided into a bipolar plate 6 and a.
As shown in fig. 2, the phase-change heat-conducting insulating tubes 3 are fixedly connected to the opposite surfaces of the catalyst layer 2, so that the effect of conducting heat inside the diffusion layer 1 and the catalyst layer 2 in a guiding manner is achieved, and the heat inside the diffusion layer 1 and the catalyst layer 2 is prevented from being accumulated to cause negative influence on the cell, thereby solving the technical problem of low heat conductivity of the existing fuel cell; the thermally conductive phase change material PC is a heat enhancing polymer designed to minimize thermal resistance between the power consuming electronic device and the heat sink to which it is attached.
As shown in fig. 1-2, the opposite surfaces of the diffusion layer 1 and the catalytic layers 2 are both fixedly provided with a positioning frame 5, the inner wall of the positioning frame 5 and the opposite surfaces of the two catalytic layers 2 are respectively and fixedly connected with a cathode plate 6 and an anode plate 7, and the plurality of cathode plates 6 and anode plates 7 are respectively distributed on the opposite surfaces of the catalytic layers 2 in a rectangular array manner.
The manufacturing method of the cathode plate 6 and the anode plate 7 comprises the step S1 of taking 65 percent of natural rubber to be made into a plate shape; s2, hollowing the middle part of the plate-shaped natural rubber, and filling 20% of conductive particles; s3, forming circular through holes in the surfaces of two sides of the plate-shaped natural rubber, fixedly inserting conductive graphite rods into the inner walls of the through holes, and enabling the surfaces of the conductive graphite rods to be in contact with conductive particles; coating a layer of carbon black on the inner wall of the hollow natural rubber in the step S2, wherein the thickness of the carbon black is 3 mm; in the step S3, filling heat conduction glue in the splicing position of the surface of the conductive graphite rod and the inner wall of the through hole; adding 15% of conductive adhesive into the conductive particles in the step S2, uniformly stirring, pouring the conductive adhesive into the hollow position of the natural rubber, and pressing the conductive particles by using a pressing strip with the length and width matched with the hollow position to bond the conductive particles and the surface of the conductive graphite rod into a whole; 5% of anti-aging agent, 2% of dimethyl silicone oil and 3% of white carbon black are respectively added into the conductive adhesive.
By arranging the manufacturing method of the cathode plate and the anode plate, the function of light conductivity by using conductive rubber is achieved, the weight is reduced while the conductivity of the cathode plate 6 and the anode plate 7 is kept, and the technical problem that the existing fuel cell is heavy in weight is solved.
A flow guide pipe 8 and a fluid pipe are respectively and fixedly arranged in the diffusion layer 1; the inner wall of the phase-change heat-conducting insulating tube 3 is fixedly bonded with a waterproof film 10 through a heat-conducting adhesive layer 11, a heat-conducting adhesive is arranged inside the heat-conducting adhesive layer 11, and the heat-conducting double-faced adhesive is formed by filling heat-conducting ceramic powder with an acrylic polymer and compounding the heat-conducting ceramic powder with an organic silicon adhesive. Has high heat conductivity and insulation, and has flexibility, compressibility, conformability, and strong adhesiveness. The temperature adaptive range is large, uneven surfaces can be filled, the heat source device and the radiating fins can be tightly and firmly attached, and heat can be quickly conducted out.
As shown in fig. 3, the flow guide pipe 8 penetrates to the inner surface of the waterproof film 10; the surface of the diffusion layer 1 is provided with a water outlet groove 12, the inner wall of the water outlet groove 12 is respectively communicated with the bottom end of the flow guide pipe 8 and the bottom end of the fluid pipe, the fluid pipe is divided into a first fluid pipe 9, a second fluid pipe 91, a third fluid pipe 92 and a fluid pipe N93, and the surfaces of the first fluid pipe 9, the second fluid pipe 91, the third fluid pipe 92 and the fluid pipe N93 are in an arc shape; the joints of the fluid pipe I9, the fluid pipe II 91, the fluid pipe III 92 and the fluid pipe N93 with the flow guide pipe 8 are spirally distributed; the top of honeycomb duct 8 and the interior diapire fixed intercommunication of phase transition heat conduction insulating tube 3, the top of fluid pipe and the fixed intercommunication of honeycomb duct 8's inner wall.
As shown in fig. 3-5, the draft tube 8 and the fluid tube are respectively and fixedly installed inside the diffusion layer 1, the connection parts of the first fluid tube 9, the second fluid tube 91, the third fluid tube 92 and the N93 with the draft tube 8 are spirally distributed, so that the bionic fractal heterogeneous flow channel is spatially and three-dimensionally distributed, the effects of shunting, absorbing heat and conducting heat for different water flow rates can be achieved, when the water flow rate is small, as shown in fig. 4, the water can flow in the first fluid tube 9 with a lower port, as shown in fig. 4, the second fluid tube 91, the third fluid tube 92 and the N93 are used for flowing of the reaction gas, when the water flow rate is large, as shown in fig. 5, the water is simultaneously flowed out by the first fluid tube 9 and the second fluid tube 91 to achieve shunting, as the third fluid tube 92 and the N93 are used for flowing of the reaction gas, a plurality, therefore, the technical problems of low heat conductivity, low recovery rate and heavier quality of the conventional fuel cell are solved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a proton exchange membrane fuel cell bipolar plate that thermal conductance is even which characterized in that: the proton exchange membrane fuel cell comprises a proton exchange membrane, catalyst layers (2), bipolar plates and diffusion layers (1), wherein the proton exchange membrane, the catalyst layers (2), the bipolar plates and the diffusion layers (1) are sequentially arranged on the surfaces, opposite to the two catalyst layers (2), of the proton exchange membrane (4) respectively, the surfaces, opposite to the two catalyst layers (2), of the proton exchange membrane are fixedly connected with the surfaces, opposite to the two diffusion layers (1), of the two catalyst layers (2), phase-change heat-conducting insulating tubes (3) are fixedly connected with the surfaces, opposite to the catalyst layers (2), of the phase-change heat-conducting insulating tubes (3) penetrate through the proton exchange membrane (4), and the phase-change heat-conducting insulating tubes (3) are distributed on the surfaces of the catalyst layers (; the bipolar plate is divided into a cathode plate (6) and an anode plate (7) according to the position of the bipolar plate in the proton exchange membrane fuel cell;
the surfaces of the diffusion layer (1) and the catalytic layers (2) which are opposite to each other are fixedly provided with a positioning frame (5), the surfaces of the inner wall of the positioning frame (5) which are opposite to the two catalytic layers (2) are respectively and fixedly connected with a cathode plate (6) and an anode plate (7), and the plurality of cathode plates (6) and anode plates (7) are respectively distributed on the surfaces of the catalytic layers (2) which are opposite to each other in a rectangular array manner;
the inside difference fixed mounting of diffusion layer (1) has honeycomb duct (8) and fluid pipe, the top of honeycomb duct (8) and the interior diapire fixed intercommunication of phase transition heat conduction insulating tube (3), the top of fluid pipe and the fixed intercommunication of inner wall of honeycomb duct (8).
2. The pem fuel cell bipolar plate of claim 1 wherein said bipolar plate has a uniform thermal conductance, said bipolar plate comprising: the inner wall of phase transition heat conduction insulating tube (3) is fixed through heat-conducting glue film (11) and is bonded waterproof film (10), the inside of heat-conducting glue film (11) is provided with heat-conducting glue, honeycomb duct (8) run through to the inboard surface of waterproof film (10).
3. The pem fuel cell bipolar plate of claim 1 wherein said bipolar plate has a uniform thermal conductance, said bipolar plate comprising: a water outlet groove (12) is formed in the surface of the diffusion layer (1), the inner wall of the water outlet groove (12) is communicated with the bottom end of the flow guide pipe (8) and the bottom end of the flow pipe respectively, the flow pipe is divided into a first flow pipe (9), a second flow pipe (91), a third flow pipe (92) and a N flow pipe (93), and the surfaces of the first flow pipe (9), the second flow pipe (91), the third flow pipe (92) and the N flow pipe (93) are in an arc shape.
4. The pem fuel cell bipolar plate of claim 3 wherein said bipolar plate has a uniform thermal conductance, said bipolar plate comprising: and the joints of the fluid pipe I (9), the fluid pipe II (91), the fluid pipe III (92) and the fluid pipe N (93) and the flow guide pipe (8) are spirally distributed.
5. The pem fuel cell bipolar plate of claim 1 wherein said bipolar plate has a uniform thermal conductance, said bipolar plate comprising: the manufacturing method of the cathode plate (6) and the anode plate (7) comprises the step S1 of taking 65 percent of natural rubber to prepare plate-shaped materials; s2, hollowing the middle part of the plate-shaped natural rubber, and filling 20% of conductive particles; s3, forming circular through holes in the surfaces of two sides of the platy natural rubber, fixedly inserting conductive graphite rods into the inner walls of the through holes, and enabling the surfaces of the conductive graphite rods to be in contact with conductive particles.
6. The PEM fuel cell bipolar plate of claim 5 wherein said bipolar plate has a uniform thermal conductance, said bipolar plate comprising: in step S2 of the method for manufacturing the cathode plate and the anode plate, a layer of carbon black is coated on the inner wall of the hollow natural rubber, and the thickness of the carbon black is 1mm-3 mm.
7. The PEM fuel cell bipolar plate of claim 5 wherein said bipolar plate has a uniform thermal conductance, said bipolar plate comprising: and in step S3 of the manufacturing method of the cathode plate and the anode plate, the insertion positions of the surfaces of the conductive graphite rods and the inner walls of the through holes are filled with heat conduction glue.
8. The PEM fuel cell bipolar plate of claim 5 wherein said bipolar plate has a uniform thermal conductance, said bipolar plate comprising: adding 10-15% of conductive adhesive into the conductive particles in the step S2 of the manufacturing method of the cathode plate and the anode plate, uniformly stirring, pouring the conductive particles into the hollow position of the natural rubber, and pressing the conductive particles by a pressing strip with the length and width matched with the hollow position to bond the conductive particles and the surface of the conductive graphite rod into a whole; 3-5% of anti-aging agent, 1-2% of dimethyl silicone oil and 3% of white carbon black are respectively added into the conductive adhesive.
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| CN201811549869.6A CN109768285B (en) | 2018-12-18 | 2018-12-18 | Proton exchange membrane fuel cell bipolar plate with uniform heat conduction |
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| CN102456893A (en) * | 2010-10-25 | 2012-05-16 | 现代自动车株式会社 | Fuel cell separator |
| CN102782917A (en) * | 2010-03-02 | 2012-11-14 | 丰田自动车株式会社 | Fuel cell |
| CN108172860A (en) * | 2018-01-01 | 2018-06-15 | 上海应用技术大学 | A kind of multifunctional microorganism fuel cell reaction unit |
| CN108539232A (en) * | 2018-04-28 | 2018-09-14 | 中国石油大学(华东) | The more attribute reconstructing methods in hydrogen fuel cell interlayer crack |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782917A (en) * | 2010-03-02 | 2012-11-14 | 丰田自动车株式会社 | Fuel cell |
| CN102456893A (en) * | 2010-10-25 | 2012-05-16 | 现代自动车株式会社 | Fuel cell separator |
| CN108172860A (en) * | 2018-01-01 | 2018-06-15 | 上海应用技术大学 | A kind of multifunctional microorganism fuel cell reaction unit |
| CN108539232A (en) * | 2018-04-28 | 2018-09-14 | 中国石油大学(华东) | The more attribute reconstructing methods in hydrogen fuel cell interlayer crack |
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