CN114023989A - Bipolar plate and electric pile comprising same - Google Patents
Bipolar plate and electric pile comprising same Download PDFInfo
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- CN114023989A CN114023989A CN202111289224.5A CN202111289224A CN114023989A CN 114023989 A CN114023989 A CN 114023989A CN 202111289224 A CN202111289224 A CN 202111289224A CN 114023989 A CN114023989 A CN 114023989A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
本发明公开了一种双极板及包含其的电堆，包括：阳极板、阴极板、阳极凹槽和阴极凹槽，所述阳极板的正面设置多个阳极凹槽，所述阴极板的正面设置多个阴极凹槽，所述双极板还包括阳极散热槽和/或阴极散热槽，所述阳极散热槽设置在阳极板的反面，和/或，所述阴极散热槽设置在阴极板的反面；所述阳极板的反面和所述阴极板的反面贴合固定在一起，所述阳极散热槽和所述阴极散热槽形成散热通道；所述散热通道、所述阳极凹槽和所述阴极凹槽相互之间不连通。该散热通道与阳极凹槽和阴极凹槽互相之间不连通，可使反应气体与散热气体互不干涉，避免了空气中的杂质对交换膜产生不利影响，同时还能够提高反应气体压力和功率密度。
The invention discloses a bipolar plate and a stack including the same, comprising: an anode plate, a cathode plate, an anode groove and a cathode groove, a plurality of anode grooves are arranged on the front of the anode plate, A plurality of cathode grooves are arranged on the front side, the bipolar plate further includes an anode heat dissipation groove and/or a cathode heat dissipation groove, the anode heat dissipation groove is arranged on the reverse side of the anode plate, and/or the cathode heat dissipation groove is arranged on the cathode plate the reverse side of the anode plate; the reverse side of the anode plate and the reverse side of the cathode plate are fixed together, the anode heat dissipation groove and the cathode heat dissipation groove form a heat dissipation channel; the heat dissipation channel, the anode groove and the The cathode grooves do not communicate with each other. The heat dissipation channel is not communicated with the anode groove and the cathode groove, so that the reaction gas and the heat dissipation gas do not interfere with each other, so as to avoid the adverse effects of impurities in the air on the exchange membrane, and at the same time, the pressure and power of the reaction gas can be improved. density.
Description
Technical Field
The invention relates to the field of fuel cells, in particular to a bipolar plate and a galvanic pile comprising the same.
Background
A fuel cell is a power generation device that directly converts chemical energy stored in fuel gas into electric energy, and is called a fourth power generation technology following water conservancy power generation, thermal power generation, and nuclear power generation. At present, besides the liquid cooling fuel cell mainly applied to the high-power demand scenario, the air cooling fuel cell applied to the low-power demand scenario, that is, the air cooling fuel cell, is increasing. Like equipment or products such as portable power source, unmanned aerial vehicle, electric fork lift, electric bicycle, its required power level is lower, but generally requires small, light in weight, and under this condition, air-cooled fuel cell can be applicable to its demand very well.
In the existing air-cooled fuel cell, a cathode runner is simultaneously used as a heat dissipation and cathode reaction gas channel, which is not beneficial to improving the pressure and power density of reaction gas, and because the air contains more impurities, especially in areas with serious atmospheric pollution, the impurities in the air can be directly contacted with an exchange membrane, the service life of the proton exchange membrane can be seriously influenced by the air quality, and the adverse effect is generated on the exchange membrane.
Disclosure of Invention
The invention provides a bipolar plate and a galvanic pile comprising the same, aiming at overcoming the defects that in the prior art, a cathode flow channel is simultaneously used as a heat dissipation and cathode reaction gas channel, and impurities in air influence the service life of an exchange membrane.
The invention solves the technical problems through the following technical scheme:
a bipolar plate comprising: the bipolar plate comprises an anode plate, a cathode plate, an anode groove and a cathode groove, wherein the front side of the anode plate is provided with a plurality of anode grooves, the front side of the cathode plate is provided with a plurality of cathode grooves, the bipolar plate further comprises an anode radiating groove and/or a cathode radiating groove, the anode radiating groove is arranged on the reverse side of the anode plate, and/or the cathode radiating groove is arranged on the reverse side of the cathode plate;
the back surface of the anode plate and the back surface of the cathode plate are fixedly attached together, the anode heat dissipation groove and the cathode heat dissipation groove form a heat dissipation channel, or the anode heat dissipation groove and the back surface of the cathode plate form a heat dissipation channel, or the cathode heat dissipation groove and the back surface of the anode plate form a heat dissipation channel;
the heat dissipation channel, the anode groove and the cathode groove are not communicated with each other.
In the scheme, by arranging the anode radiating grooves and/or the cathode radiating grooves, the radiating channels can be formed when the anode plate and the cathode plate are attached. The heat dissipation channel is not communicated with the anode groove and the cathode groove, so that the reaction gas and the heat dissipation gas are not interfered with each other, the adverse effect of impurities in the air on an exchange membrane is avoided, and the pressure and the power density of the reaction gas can be improved. The heat dissipation channel is positioned between the anode plate and the cathode plate, and a special heat dissipation plate is not required to be additionally arranged, so that the number of parts can be reduced, and the structure is more compact.
Preferably, the heat dissipation channels are staggered with the anode grooves and the cathode grooves in the projection direction.
In this scheme, be favorable to thermal circulation, can promote the radiating efficiency.
Preferably, the heat dissipation channel includes a first channel and a second channel, the first channel is interlaced with the anode groove and the cathode groove, and the second channel is interlaced with and communicates with the first channel.
In this scheme, first passageway and positive pole recess and negative pole recess are crisscross, and the crisscross intercommunication of second passageway and first passageway is favorable to thermal circulation, can promote the radiating efficiency.
Preferably, two ends of the heat dissipation channel are communicated with the outside.
In this scheme, be favorable to external air admission radiating channel, the heat discharge that also can be quick can further promote the radiating efficiency.
Preferably, the second channel forms an anode projection on the front surface of the anode plate, the anode projection is disposed between adjacent anode grooves, the second channel forms a cathode projection on the front surface of the cathode plate, and the cathode projection is disposed between adjacent cathode grooves.
In this scheme, the convenient preparation of anode plate and negative plate can the stamping forming of integration, is favorable to reducing the cost of generation, promotes production efficiency.
Preferably, the first channel forms a protrusion on the front surface of the anode plate and intersects with the bottom surface of the anode groove, and a plurality of spaced platforms are formed in the anode groove; and/or the first channel forms a bulge on the front surface of the cathode plate and the bottom surface of the cathode groove, and a plurality of spaced platforms are formed in the cathode groove.
In this scheme, the platform structure is favorable to the abundant distribution and the reaction of reaction gas.
Preferably, the bipolar plate further comprises an anode gas inlet, an anode gas outlet, a cathode gas inlet and a cathode gas outlet, the anode gas inlet and the cathode gas outlet are respectively located on the same side of the anode plate and the cathode plate, the anode gas outlet and the cathode gas inlet are respectively located on the other side of the anode plate and the cathode plate, the anode gas inlet and the anode gas outlet are respectively arranged on the anode plate and the cathode plate in an angle-to-angle manner, and the cathode gas inlet and the cathode gas outlet are respectively arranged on the anode plate and the cathode plate in an angle-to-angle manner.
In the scheme, the anode gas inlet and the anode gas outlet are distributed in a diagonal manner, and the cathode gas inlet and the cathode gas outlet are distributed in a diagonal manner, so that the flow field distribution of the reaction gas can be more uniform when the reaction gas flows through the bipolar plate, and the lengths of the flow channels can be basically consistent.
Preferably, the anode gas inlet is located above the cathode gas outlet, and the cathode gas inlet is located above the anode gas outlet.
In this case, the discharge of the water produced by the reaction is facilitated. Generally, more water generated by the reaction is gathered on the cathode side, the cathode gas outlet is positioned below, namely the outlet is positioned on the downwind side of the reaction gas flow, and the gravity action is superposed, so that the water is more favorably discharged.
Preferably, the anode gas inlet is not smaller than the anode gas outlet, the cathode gas inlet is not smaller than the cathode gas outlet, and the cathode gas inlet is larger than the anode gas inlet.
In this scheme, when adopting pure air to provide cathode gas, because of the air hole contains more non-reacting gas, the cathode gas import is greater than the anode gas import, can increase cathode gas's air input, and then matches with anode gas's air input.
Preferably, the bipolar plate further includes a bridge channel and a distribution area, the bridge channel is respectively disposed at the anode gas inlet, the anode gas outlet, the cathode gas inlet and the cathode gas outlet, the distribution area is disposed at one side of the bridge channel, the ends of the bridge channel at the anode gas inlet and the anode gas outlet are disposed with openings on the front surface of the anode plate, the ends of the bridge channel at the cathode gas inlet and the cathode gas outlet are disposed with openings on the front surface of the cathode plate, and the bridge channel is communicated with the anode groove or the cathode groove through the distribution area.
In this scheme, the gap bridge passageway can provide the passageway for gaseous business turn over, and the distribution region can play the effect of buffering to reactant gas for reactant gas distributes evenly in entering into anode groove or negative pole recess, thereby makes the reaction more even.
Preferably, the bipolar plate further comprises sealing structures respectively disposed at an outer edge of the anode plate, an outer edge of the cathode plate, and edges of the anode gas inlet, the anode gas outlet, the cathode gas inlet, and the cathode gas outlet.
In this scheme, through setting up seal structure, can guarantee reaction gas's gas tightness for reaction gas is difficult for leaking.
Preferably, an electric stack comprises a bipolar plate as described above.
In this scheme, adopt the pile that foretell bipolar plate preparation formed, heat dissipation channel and positive pole recess and negative pole recess do not communicate between each other, have avoided impurity in the air to produce adverse effect to exchange membrane, can promote the life of pile, can also improve reaction gas pressure and power density simultaneously. Need not additionally to set up special heating panel, can reduce part quantity, further reduce quality and volume, make the structure of galvanic pile compacter.
The positive progress effects of the invention are as follows: in the scheme, the anode heat dissipation groove and/or the cathode heat dissipation groove are/is arranged, so that the heat dissipation channel can be formed when the anode plate and the cathode plate are attached. The heat dissipation channel is not communicated with the anode groove and the cathode groove, so that the reaction gas and the heat dissipation gas are not interfered with each other, the adverse effect of impurities in the air on an exchange membrane is avoided, and the pressure and the power density of the reaction gas can be improved. The heat dissipation channel is positioned between the anode plate and the cathode plate, and a special heat dissipation plate is not required to be additionally arranged, so that the number of parts can be reduced, and the structure is more compact.
Drawings
Fig. 1 is a schematic front view of an anode plate according to a preferred embodiment of the present invention;
FIG. 2 is a schematic perspective view of an anode plate according to a preferred embodiment of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic view of the reverse structure of FIG. 3 according to the present invention;
FIG. 5 is a schematic front view of a cathode plate according to a preferred embodiment of the present invention;
FIG. 6 is a schematic perspective view of a cathode plate according to a preferred embodiment of the present invention;
FIG. 7 is an enlarged view of a portion B of FIG. 6 in accordance with the present invention;
FIG. 8 is a schematic view of the reverse structure of FIG. 7 in accordance with the present invention;
FIG. 9 is a schematic perspective view of a bipolar plate according to a preferred embodiment of the present invention;
FIG. 10 is a schematic view of a bipolar plate according to a preferred embodiment of the present invention in a partial cross-sectional configuration;
FIG. 11 is a schematic view of the flow of gas to a bipolar plate according to a preferred embodiment of the present invention;
fig. 12 is a schematic structural view of a stack according to a preferred embodiment of the invention.
Anode gap bridge structure 130, anode opening 131
Anode heat sink 140
An anode distribution region 170
Cathode plate 200
Cathode gap bridge structure 230 and cathode opening 231
An anode gas inlet 510, a cathode gas inlet 511, an anode gas outlet 512, and a cathode gas outlet 513
Detailed Description
In the present embodiment, as shown in fig. 1 to 9, a bipolar plate 300 includes: the bipolar plate 300 further comprises an anode heat sink groove 140 and a cathode heat sink groove 240, wherein the anode heat sink groove 140 is arranged on the reverse side of the anode plate 100, and the cathode heat sink groove 240 is arranged on the reverse side of the cathode plate 200.
As shown in fig. 3, 4, 7 and 8, the anode grooves 150 are provided in a plurality and are spaced apart from each other, and the cathode grooves 250 are provided in a plurality and are spaced apart from each other.
As shown in fig. 10, the back surface of anode plate 100 and the back surface of cathode plate 200 are attached and fixed together, and anode heat sink 140 and cathode heat sink 240 form a heat dissipation channel.
The heat dissipation channels are distributed at intervals and are criss-cross.
As shown in fig. 10, the heat dissipation channels, the anode grooves 150, and the cathode grooves 250 are not communicated with each other.
As shown in fig. 10 and 11, in fig. 11, the left side represents the anode gas flow direction, and the right side represents the cathode gas flow direction, wherein the anode gas flows in the anode groove 150 in the horizontal direction C, the cathode gas flows in the cathode groove 250 in the other horizontal direction D, the heat dissipation gas can flow out in the vertical direction E with carrying heat, and the heat dissipation gas can also flow through the first passage 310.
In this embodiment, by providing anode heat dissipation grooves 140 and cathode heat dissipation grooves 240, heat dissipation channels can be formed when anode plate 100 and cathode plate 200 are attached. The heat dissipation channel is not communicated with the anode groove 150 and the cathode groove 250, so that the reaction gas and the heat dissipation gas are not interfered with each other, the adverse effect of impurities in the air on the exchange membrane is avoided, and meanwhile, the pressure and the power density of the reaction gas can be improved. The heat dissipation channel is located between the anode plate 100 and the cathode plate 200, and no special heat dissipation plate is needed to be additionally arranged, so that the number of parts can be reduced, and the structure is more compact.
In other embodiments, the bipolar plate 300 may further include only the anode heat dissipation groove 140, the anode heat dissipation groove 140 is disposed on the opposite side of the anode plate 100, and when the opposite side of the anode plate 100 and the opposite side of the cathode plate 200 are attached and fixed, the anode heat dissipation groove 140 and the opposite side of the cathode plate 200 form a heat dissipation channel, which is also capable of making the heat dissipation channel not communicate with the anode groove 150 and the cathode groove 250.
In other embodiments, the bipolar plate 300 may further include only the cathode heat dissipation groove 240, the cathode heat dissipation groove 240 is disposed on the opposite side of the cathode plate 200, and when the opposite side of the anode plate 100 and the opposite side of the cathode plate 200 are attached and fixed, the cathode heat dissipation groove 240 and the opposite side of the cathode plate 200 form a heat dissipation channel, which is also capable of making the heat dissipation channel not communicate with the anode groove 150 and the cathode groove 250.
In the present embodiment, as shown in fig. 10, the heat dissipation channels are staggered with the anode grooves 150 and the cathode grooves 250 in the projection direction. The heat circulation is facilitated, and the heat dissipation efficiency can be improved.
As shown in fig. 9 and 10, the heat dissipation channel includes a first channel 310 and a second channel 330, the first channel 310 is interleaved with the anode groove 150 and the cathode groove 250, the second channel 330 is interleaved with and communicates with the first channel 310, wherein the second channel 330 extends in the same direction as the anode groove 150 and the cathode groove 250. The first channels 310 are staggered with the anode grooves 150 and the cathode grooves 250, and the second channels 330 are communicated with the first channels 310 in a staggered manner, so that heat circulation is facilitated, and the heat dissipation efficiency can be improved.
In other embodiments, the heat dissipation channel may have only the first channel 310, and the heat is discharged through the first channel 310.
In this embodiment, both ends of the heat dissipation channel communicate with the outside. The heat dissipation device is beneficial to external air to enter the heat dissipation channel, heat can be rapidly discharged, and the heat dissipation efficiency can be further improved.
In this embodiment, the second channels 330 form anode protrusions 160 on the front side of the anode plate 100, the anode protrusions 160 are disposed between adjacent anode recesses 150, the second channels 330 form cathode protrusions 260 on the front side of the cathode plate 200, and the cathode protrusions 260 are disposed between adjacent cathode recesses 250. The anode plate 100 and the cathode plate 200 are convenient to manufacture, can be integrally formed in a punching mode, and are beneficial to reducing the production cost and improving the production efficiency.
In this embodiment, the protrusions formed on the front surface of the anode plate 100 of the first channel 310 intersect the bottom surface of the anode groove 150 to form a plurality of spaced lands in the anode groove 150, and the protrusions formed on the front surface of the cathode plate 200 of the first channel 310 intersect the bottom surface of the cathode groove 250 to form a plurality of spaced lands in the cathode groove 250. The platform structure is beneficial to the full distribution and reaction of reaction gas.
In other embodiments, the first channel 310 may be formed only on the front surface of the anode plate 100 with the projections intersecting the bottom surface of the anode recess 150 to form a plurality of spaced lands in the anode recess 150.
In other embodiments, the first channels 310 may also be formed only in the front surface of the cathode plate 200 with protrusions crossing the bottom surface of the cathode grooves 250 to form a plurality of spaced lands in the cathode grooves 250.
In the present embodiment, the bipolar plate 300 further includes an anode gas inlet 510, an anode gas outlet 512, a cathode gas inlet 511, and a cathode gas outlet 513, the anode gas inlet 510 and the cathode gas outlet 513 are respectively located on the same side of the anode plate 100 and the cathode plate 200, the anode gas outlet 512 and the cathode gas inlet 511 are respectively located on the other side of the anode plate 100 and the cathode plate 200, the anode gas inlet 510 and the anode gas outlet 512 are respectively diagonally distributed on the anode plate 100 and the cathode plate 200, and the cathode gas inlet 511 and the cathode gas outlet 513 are respectively diagonally distributed on the anode plate 100 and the cathode plate 200.
In this embodiment, the anode gas inlet 510 and the anode gas outlet 512 are diagonally distributed, and the cathode gas inlet 511 and the cathode gas outlet 513 are diagonally distributed, so that the flow field distribution of the reactant gas flowing through the bipolar plate 300 can be more uniform, and the lengths of the flow channels can be substantially uniform.
In the present embodiment, the anode gas inlet 510 is located above the cathode gas outlet 513, and the cathode gas inlet 511 is located above the anode gas outlet 512. Is beneficial to the discharge of water generated in the reaction. In general, more water generated by the reaction is collected on the cathode side, and the cathode gas outlet 513 is positioned below, which is equivalent to the outlet positioned on the downwind side of the reaction gas flow, and the gravity action is superposed to be more beneficial to the discharge of the water.
In the present embodiment, the anode gas inlet 510 is not smaller than the anode gas outlet 512, the cathode gas inlet 511 is not smaller than the cathode gas outlet 513, and the cathode gas inlet 511 is larger than the anode gas inlet 510. When pure air is used for providing cathode gas, the air holes contain more non-reaction gas, and the cathode gas inlet 511 is larger than the anode gas inlet 510, so that the air inflow of the cathode gas can be increased, and the air inflow is matched with the air inflow of the anode gas.
In other embodiments, the anode gas inlet 510 may be equal to the anode gas outlet 512 and the cathode gas inlet 511 may be equal to the cathode gas outlet 513.
In this embodiment, the bipolar plate 300 further includes a bridge channel 320 and a distribution area, the bridge channel 320 is respectively disposed at the anode gas inlet 510, the anode gas outlet 512, the cathode gas inlet 511 and the cathode gas outlet 513, the distribution area is disposed at one side of the bridge channel 320, the ends of the bridge channel 320 at the anode gas inlet 510 and the anode gas outlet 512 are disposed with openings at the front surface of the anode plate 100, the ends of the bridge channel 320 at the cathode gas inlet 511 and the cathode gas outlet 513 are disposed with openings at the front surface of the cathode plate 200, wherein the distribution area includes an anode distribution area 170 and a cathode distribution area 270, the anode distribution area 170 is disposed on the anode plate 100, the cathode distribution area 270 is disposed on the cathode plate 200, the bridge channel 320 is communicated with the anode groove 150 through the anode distribution area 170, and the bridge channel 320 is communicated with the cathode groove 250 through the cathode distribution area 270. The bridge passage 320 can provide a passage for the gas to enter and exit, and the distribution region can buffer the reaction gas, so that the reaction gas is uniformly distributed in the anode groove 150 or the cathode groove 250, and the reaction is more uniform.
The gap bridge channel 320 is formed by attaching the anode gap bridge structure 130 and the cathode gap bridge structure 230, the anode gap bridge structure 130 is arranged on the anode plate 100, the cathode gap bridge structure 230 is arranged on the cathode plate 200, the anode gap bridge structure 130 at the anode gas inlet 510 and the anode gas outlet 512 is provided with an anode opening 131 on the front surface of the anode plate 100, and the cathode gap bridge structure 230 at the cathode gas inlet 511 and the cathode gas outlet 513 is provided with a cathode opening 231 on the front surface of the cathode plate 200.
In the present embodiment, the bipolar plate 300 further includes sealing structures respectively provided at the outer edges of the anode plate 100, the cathode plate 200, and the anode gas inlet 510, the anode gas outlet 512, the cathode gas inlet 511, and the cathode gas outlet 513. Through setting up seal structure, can guarantee reaction gas's gas tightness for reaction gas is difficult for leaking.
Wherein, the seal structure includes an anode seal structure 120 and a cathode seal structure 220, the anode seal structure 120 is disposed on the anode plate 100, and the cathode seal structure 220 is disposed on the cathode plate 200.
As shown in fig. 12, in the present embodiment, there is also provided a stack 400 including the bipolar plate 300 as above.
The stack 400 is formed by stacking a plurality of bipolar plates 300, and the heat dissipation channels are only used for dissipating heat and do not participate in the introduction or distribution of the cathode reaction gas, thereby forming the cathode closed stack 400.
In this scheme, adopt the pile 400 that foretell bipolar plate 300 was made, heat dissipation channel and positive pole recess 150 and negative pole recess 250 do not communicate between each other, have avoided impurity in the air to produce adverse effect to the exchange membrane, can promote pile 400's life, can also improve reaction gas pressure and power density simultaneously. No special heat dissipation plate is required, the number of parts can be reduced, the mass and the volume are further reduced, and the structure of the electric pile 400 is more compact.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (12)
1. A bipolar plate comprising: anode plate, negative plate, positive pole recess and negative pole recess, the front of anode plate sets up a plurality of positive pole recesses, the front of negative plate sets up a plurality of negative pole recesses, its characterized in that: the bipolar plate also comprises an anode heat dissipation groove and/or a cathode heat dissipation groove, wherein the anode heat dissipation groove is arranged on the reverse side of the anode plate, and/or the cathode heat dissipation groove is arranged on the reverse side of the cathode plate;
the back surface of the anode plate and the back surface of the cathode plate are fixedly attached together, the anode heat dissipation groove and the cathode heat dissipation groove form a heat dissipation channel, or the anode heat dissipation groove and the back surface of the cathode plate form a heat dissipation channel, or the cathode heat dissipation groove and the back surface of the anode plate form a heat dissipation channel;
the heat dissipation channel, the anode groove and the cathode groove are not communicated with each other.
2. The bipolar plate of claim 1, wherein the heat dissipation channels are staggered from the anode grooves to the cathode grooves in an orthogonal projection direction.
3. The bipolar plate of claim 2 wherein said heat sink channels comprise first channels interleaved with said anode grooves and said cathode grooves and second channels interleaved with and in communication with said first channels.
4. The bipolar plate of claim 2, wherein both ends of the heat dissipation channel communicate with the outside.
5. The bipolar plate of claim 3 wherein said second channels form anode projections on the front side of the anode plate, said anode projections being disposed between adjacent said anode grooves, said second channels form cathode projections on the front side of the cathode plate, said cathode projections being disposed between adjacent said cathode grooves.
6. The bipolar plate of claim 3 wherein the first channel forms a ridge on the front surface of the anode plate that intersects the bottom surface of the anode recess to form a plurality of spaced lands in the anode recess; and/or the first channel forms a bulge on the front surface of the cathode plate and the bottom surface of the cathode groove, and a plurality of spaced platforms are formed in the cathode groove.
7. The bipolar plate of claim 1, further comprising an anode gas inlet, an anode gas outlet, a cathode gas inlet, and a cathode gas outlet, the anode gas inlet and the cathode gas outlet being located on the same side of the anode plate and the cathode plate, respectively, the anode gas outlet and the cathode gas inlet being located on the other side of the anode plate and the cathode plate, respectively, the anode gas inlet and the anode gas outlet being diagonally distributed on the anode plate and the cathode plate, respectively, and the cathode gas inlet and the cathode gas outlet being diagonally distributed on the anode plate and the cathode plate, respectively.
8. The bipolar plate of claim 7 wherein said anode gas inlet is positioned above said cathode gas outlet and said cathode gas inlet is positioned above said anode gas outlet.
9. The bipolar plate of claim 7 wherein the anode gas inlet is not smaller than the anode gas outlet, the cathode gas inlet is not smaller than the cathode gas outlet, and the cathode gas inlet is larger than the anode gas inlet.
10. The bipolar plate of claim 7, further comprising a bridge channel and a distribution region, wherein the bridge channel is disposed at the anode gas inlet, the anode gas outlet, the cathode gas inlet and the cathode gas outlet, respectively, the distribution region is disposed at one side of the bridge channel, ends of the bridge channel at the anode gas inlet and the anode gas outlet are opened at the front surface of the anode plate, ends of the bridge channel at the cathode gas inlet and the cathode gas outlet are opened at the front surface of the cathode plate, and the bridge channel is communicated with the anode groove or the cathode groove through the distribution region.
11. The bipolar plate of claim 7, further comprising sealing structures disposed at an outer edge of the anode plate, an outer edge of the cathode plate, and edges of the anode gas inlet, the anode gas outlet, the cathode gas inlet, and the cathode gas outlet, respectively.
12. A galvanic stack comprising a bipolar plate according to any one of claims 1 to 11.
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| CN202111289224.5A CN114023989A (en) | 2021-11-02 | 2021-11-02 | Bipolar plate and electric pile comprising same |
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| CN202111289224.5A CN114023989A (en) | 2021-11-02 | 2021-11-02 | Bipolar plate and electric pile comprising same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114759217A (en) * | 2022-04-07 | 2022-07-15 | 上海电气集团股份有限公司 | Fluid channel, end plate comprising fluid channel and electric pile comprising fluid channel |
| CN114824354A (en) * | 2022-05-27 | 2022-07-29 | 上海电气集团股份有限公司 | Method for preparing single cell of fuel cell |
| CN115411289A (en) * | 2022-08-17 | 2022-11-29 | 西安交通大学 | Embedded bipolar plate structure of air-cooled hydrogen fuel cell stack |
| CN118448666A (en) * | 2024-04-25 | 2024-08-06 | 国创氢能科技有限公司 | Fuel cell bipolar plate and stack |
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| CN114759217A (en) * | 2022-04-07 | 2022-07-15 | 上海电气集团股份有限公司 | Fluid channel, end plate comprising fluid channel and electric pile comprising fluid channel |
| CN114759217B (en) * | 2022-04-07 | 2024-03-19 | 上海电气集团股份有限公司 | Fluid channel, end plate comprising the fluid channel and galvanic pile comprising the fluid channel |
| CN114824354A (en) * | 2022-05-27 | 2022-07-29 | 上海电气集团股份有限公司 | Method for preparing single cell of fuel cell |
| CN114824354B (en) * | 2022-05-27 | 2023-10-27 | 上海电气集团股份有限公司 | Method for preparing single cell of fuel cell |
| CN115411289A (en) * | 2022-08-17 | 2022-11-29 | 西安交通大学 | Embedded bipolar plate structure of air-cooled hydrogen fuel cell stack |
| CN115411289B (en) * | 2022-08-17 | 2024-03-12 | 西安交通大学 | Embedded bipolar plate structure of air-cooled hydrogen fuel cell stack |
| CN118448666A (en) * | 2024-04-25 | 2024-08-06 | 国创氢能科技有限公司 | Fuel cell bipolar plate and stack |
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Application publication date: 20220208 |