CN218101324U - Graphite bipolar plate structure of fuel cell - Google Patents
Graphite bipolar plate structure of fuel cell Download PDFInfo
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- CN218101324U CN218101324U CN202222248902.XU CN202222248902U CN218101324U CN 218101324 U CN218101324 U CN 218101324U CN 202222248902 U CN202222248902 U CN 202222248902U CN 218101324 U CN218101324 U CN 218101324U
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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
The utility model discloses a graphite bipolar plate structure of a fuel cell, which relates to the technical field of fuel cells and comprises an installation sliding frame, an air inlet reaction unit and an exchange membrane fixing unit; the two mounting sliding frames are respectively arranged at the left side and the right side of the polar plate main body; the gas inlet reaction unit comprises a left vent hole, a vent groove, a limiting plate and a reaction groove, wherein the left side of the polar plate main body is provided with a vertical left vent hole, the middle part of the polar plate main body is provided with a square reaction groove, and at least six transverse vent grooves are formed in the reaction groove; the exchange membrane fixing unit is arranged on the front side of the polar plate main body and is positioned around the reaction tank. The utility model discloses have the bipolar plate structure of rotational symmetry formula, can make reaction gas transport in to the reacting chamber along the shared channel that the clamp formed respectively, and can establish ties the stack setting around a plurality of polar plate groups to increase fuel cell's voltage.
Description
Technical Field
The utility model relates to a fuel cell technical field specifically is a fuel cell graphite bipolar plate structure.
Background
A fuel cell is a device that directly converts chemical energy of fuel into electric 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 bipolar plate is a core part of the fuel cell and is an important part related to the performance of the fuel cell;
the positive and negative polar plates of the fuel cell in the prior art are not universal, so that the manufacturing cost is increased, the thickness of the polar plates is larger, the number of the polar plates in a limited installation space is reduced, the rated output voltage of the cell is lower, in addition, the gases required by the reaction are transported by a mixed pipeline, and partial reaction often occurs in the transportation process, so that the utilization rate of raw materials is reduced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, a fuel cell graphite bipolar plate structure is provided, have the bipolar plate structure of rotational symmetry formula, can make gaseous reaction along the shared channel that the clamp formed respectively to transporting in the reacting chamber, thereby prevent that gaseous just produces the reaction in the transportation, and have reliable slip latch device, can establish ties the stack setting around a plurality of polar plate group, thereby form the pile, and increase fuel cell's voltage, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a graphite bipolar plate structure of a fuel cell comprises an installation sliding frame, an air inlet reaction unit and an exchange membrane fixing unit;
mounting a sliding frame: the two installation carriages are respectively arranged at the left side and the right side of the polar plate main body, the polar plate main body comprises a front positive plate and a rear negative plate, and the two polar plates are rotationally and symmetrically arranged between the two installation carriages;
a gas inlet reaction unit: the air filtering device comprises a left air vent, an air groove, air filtering blocks, air inlets, a limiting plate and a reaction groove, wherein a vertical left air vent is formed in the left side of a positive plate in a polar plate main body, a square reaction groove is formed in the middle of the positive plate in the polar plate main body, at least six transverse air grooves are formed in the reaction groove, the air groove is communicated with the left air vent at the left end, the air filtering blocks are embedded at the left end of the air groove, a row of air inlets are uniformly formed in the air filtering blocks, the limiting plate is installed on the front side of each air filtering block, and the limiting plate is flush with the front end face of the polar plate main body;
an exchange membrane fixing unit: the front side of the positive plate in the plate main body is arranged and is positioned at the periphery of the reaction tank.
The installation balladeur train is used for vertical sliding in side by side and the installation of polar plate main part, two polar plate rotational symmetry settings around the polar plate main part contains, thereby make the gas passage of the left and right sides communicate with different air channel and reaction tank respectively, thereby a plurality of polar plate main parts splice in succession and form shared left gas passage and right gas passage in the left and right sides, left gas passage and right gas passage are used for carrying required hydrogen and the oxygen of reaction to the reaction tank respectively, it is used for carrying out the shutoff to the port department of air channel to strain the gas piece, thereby make gaseous from the inlet port entering, and prevent that the liquid water that the reaction produced from flowing into in left gas passage and the right gas passage from the port department of air channel, the limiting plate is used for straining the spacing of gas piece to be fixed, thereby reaction tank on two polar plates on the front and back splices each other forms a reacting chamber, exchange membrane fixed unit is used for proton exchange membrane's fixed.
Furthermore, the reaction unit that admits air still contains right air vent, the right side of positive plate in the polar plate main part is seted up with the right air vent that the equidimension is but not communicate with the air channel of left gas passage, and right air vent is used for the letting in of oxygen.
Furthermore, the exchange membrane fixing unit comprises a press-fit frame, mounting holes and screws, the press-fit frame is mounted on the outer edge of the reaction tank and on the front side of the positive electrode plate in the electrode plate main body, the mounting holes are formed in the four corners of the press-fit frame, one screw is mounted in each mounting hole, and the press-fit frame is fixedly connected with the positive electrode plate through the screws. The mounting hole is used for the installation of screw, and the screw is used for fastening the pressfitting frame in the front side of positive electrode plate, and the pressfitting frame is used for proton exchange membrane's installation and fixed, and proton exchange membrane provides the place of adhering to for the reaction.
Further, still include mounting groove and catalyst dropwise add hole, fore-and-aft mounting groove has been seted up at the upper end middle part of polar plate main part, the bottom of mounting groove just is located and has seted up a line catalyst dropwise add hole with the one side that the reaction tank corresponds, catalyst dropwise add hole and reaction tank communicate. The mounting grooves on the plurality of polar plate main bodies are connected to form a longitudinal channel for conveying the catalyst, and the catalyst dripping holes are used for dripping the catalyst in the catalyst conveying channel into the reaction tank, so that the gas in the reaction tank can accelerate the reaction.
The reaction tank is characterized by further comprising water leakage holes, a row of water leakage holes are formed in the lower end of the reaction tank and communicated with the outer side of the lower end of the polar plate main body, and the water leakage holes are used for downwards leaking liquid water generated in the reaction.
Further, still include joint spout and joint slide rail, a set of two joint spouts of longitudinal symmetry are all seted up to the left and right sides of polar plate main part, the four corners position department of installation balladeur train all installs and is provided with a fore-and-aft joint slide rail, the joint slide rail and the joint spout sliding connection of adjacent side. The clamping slide rail is used for being clamped with the clamping slide groove, and the polar plate main body can slide back and forth along the direction of the clamping slide rail, so that the installation of the plurality of polar plate main bodies is completed, a galvanic pile is formed, and the voltage of the fuel cell is increased.
Compared with the prior art, the beneficial effects of the utility model are that: the graphite bipolar plate structure of the fuel cell has the following advantages:
1. the bipolar plate structure with rotational symmetry can make the reaction gas respectively transport to the reaction chamber along the shared channel formed by the clamping, thereby preventing the gas from reacting during the transportation process: when the two positive and negative plates which are rotationally symmetrical are mutually attached, a shared gas channel is formed on the two sides, and gas in the channel passes through each vent groove and enters a reaction chamber formed by clamping the two reaction grooves along the gas inlet;
2. have reliable slip latch device, can be with a plurality of polar plate group tandem stack settings to increase fuel cell's voltage: when the fuel cell is installed, clamping sliding grooves at four corners of two polar plates are clamped with clamping sliding rails on an installation sliding frame, the two polar plates are slid into the middle of the installation sliding frame, and then a plurality of polar plate main bodies are respectively superposed from the front end and the rear end of the installation sliding frame, so that a pile is formed, and the voltage of the fuel cell is increased;
3. the utility model discloses have the bipolar plate structure of rotational symmetry formula, can make reaction gas transport in to the reacting chamber along the shared channel that the clamp formed respectively to prevent that gaseous just from producing the reaction in the transportation, and have reliable slip latch device, can establish ties the stack setting around a plurality of polar plate group, thereby form the pile, and increase fuel cell's voltage.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the positive plate of the present invention;
fig. 3 is a schematic view of a part of an enlarged structure at a in fig. 2 according to the present invention.
In the figure: the air inlet device comprises a mounting sliding frame 1, a polar plate main body 2, an air inlet reaction unit 3, a left air vent 31, an air vent groove 32, an air filter block 33, an air inlet 34, a limiting plate 35, a reaction groove 36, a right air vent 37, an exchange membrane fixing unit 4, a laminating frame 41, a mounting hole 42, a screw 43, a mounting groove 5, a catalyst dripping hole 6, a water leakage hole 7, a clamping sliding groove 8 and a clamping sliding rail 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present embodiment provides a technical solution: a graphite bipolar plate structure of a fuel cell comprises an installation sliding frame 1, an air inlet reaction unit 3 and an exchange membrane fixing unit 4;
mounting the carriage 1: the two installation carriages 1 are respectively arranged at the left side and the right side of the polar plate main body 2, the polar plate main body 2 comprises a front positive plate and a rear negative plate, and the two polar plates are rotationally and symmetrically arranged between the two installation carriages 1;
the intake gas reaction unit 3: the plate comprises a left vent hole 31, a vent groove 32, an air filtering block 33, air inlet holes 34, a limiting plate 35 and a reaction groove 36, wherein the left side of a positive plate in a plate main body 2 is provided with the vertical left vent hole 31, the middle part of the positive plate in the plate main body 2 is provided with the square reaction groove 36, the inside of the reaction groove 36 is provided with at least six transverse vent grooves 32, the vent groove 32 is communicated with the left vent hole 31 at the left end, the left end of the vent groove 32 is embedded with the air filtering block 33, the inside of the air filtering block 33 is uniformly provided with a row of air inlet holes 34, the front side of the air filtering block 33 is provided with the limiting plate 35, and the limiting plate 35 is flush with the front end face of the plate main body 2;
exchange membrane fixing unit 4: is installed on the front side of the positive plate in the plate body 2 and is positioned around the reaction tank 36.
The mounting sliding frame 1 is used for longitudinally sliding in and mounting the polar plate main body 2 side by side, the front and the rear polar plates contained in the polar plate main body 2 are rotationally and symmetrically arranged, so that gas channels on the left side and the right side are respectively communicated with the reaction grooves 36 through different vent grooves 32, the polar plate main bodies 2 are continuously spliced to form a shared left gas channel and right gas channel on the left side and the right side, the left gas channel and the right gas channel are respectively used for conveying hydrogen and oxygen required by reaction into the reaction grooves 36, the gas filtering block 33 is used for plugging a port of the vent grooves 32, so that gas enters from the gas inlet 34 and prevents liquid water generated by the reaction from flowing into the left gas channel and the right gas channel from the port of the vent grooves 32, the limiting plate 35 is used for limiting and fixing the gas filtering block 33, the reaction grooves 36 on the front and the rear polar plates are spliced to form a reaction chamber, and the exchange membrane fixing unit 4 is used for fixing the proton exchange membrane.
The gas inlet reaction unit 3 further comprises a right gas channel 37, the right side of the positive plate in the plate body 2 is provided with a right vent hole 37 which has the same size as the left vent hole 31 but is not communicated with the vent groove 32, and the right vent hole 37 is used for introducing oxygen.
The exchange membrane fixing unit 4 comprises a pressing frame 41, mounting holes 42 and screws 43, the pressing frame 41 is mounted on the front side of the positive electrode plate in the electrode plate main body 2 and located on the outer edge of the reaction tank 36, the mounting holes 42 are formed in four corners of the pressing frame 41, one screw 43 is mounted inside each mounting hole 42, and the pressing frame 41 is fixedly connected with the positive electrode plate through the screws 43. The mounting holes 42 are used for mounting screws 43, the screws 43 are used for fastening the pressing frame 41 on the front side of the positive electrode plate, the pressing frame 41 is used for mounting and fixing the proton exchange membrane, and the proton exchange membrane provides an attachment place for reaction.
Still include mounting groove 5 and catalyst dropwise add hole 6, fore-and-aft mounting groove 5 has been seted up at the upper end middle part of polar plate main part 2, and the bottom of mounting groove 5 just is located and has seted up one line catalyst dropwise add hole 6 with the corresponding one side of reaction tank 36, and catalyst dropwise add hole 6 communicates with reaction tank 36. The mounting grooves 5 of the plurality of plate bodies 2 are connected to form a longitudinal channel for catalyst delivery, and the catalyst dropping holes 6 are used for dropping the catalyst in the catalyst delivery channel into the reaction tank 36, so that the reaction of the gas in the reaction tank 36 can be accelerated.
The reaction tank further comprises water leakage holes 7, the lower end of the reaction tank 36 is provided with a row of water leakage holes 7, the water leakage holes 7 are communicated with the outer side of the lower end of the polar plate main body 2, and the water leakage holes 7 are used for downwards leaking liquid water generated in the reaction.
Still including joint spout 8 and joint slide rail 9, a set of two joint spouts 8 of longitudinal symmetry are all seted up to the left and right sides of polar plate main part 2, and the four corners position department of installation balladeur train 1 all installs and is provided with a fore-and-aft joint slide rail 9, joint slide rail 9 and the 8 sliding connection of joint spout of adjacent side. The clamping slide rail 9 is used for being clamped with the clamping slide groove 8, so that the polar plate main bodies 2 can slide back and forth along the direction of the clamping slide rail 9, the installation of the polar plate main bodies 2 is further completed, a galvanic pile is formed, and the voltage of the fuel cell is increased.
The utility model provides a pair of fuel cell graphite bipolar plate structure's theory of operation as follows:
when positive and negative electrode plates in the device are installed, one end of the positive electrode plate, which is provided with the pressing frame 41, is placed forwards, then the negative electrode plate is placed in rotational symmetry relative to the positive electrode plate, clamping sliding grooves 8 at four corners of the two electrode plates are clamped with clamping sliding rails 9 on an installation sliding frame 1, the two electrode plates are slid into the middle of the installation sliding frame 1, and then a plurality of electrode plate main bodies 2 are respectively superposed from the front end and the rear end of the installation sliding frame 1, so that a pile is formed, and the voltage of a fuel cell is increased; when the positive and negative plates which are rotationally symmetrical are mutually attached, the two sides respectively form a shared gas channel, the gas channel on the left side is used for conveying hydrogen, the gas channel on the right side is used for introducing oxygen, gas in the channels passes through each vent groove 32 and enters a reaction chamber formed by clamping two reaction grooves 36 along the gas inlet 34, the catalyst in the catalyst conveying channel on the upper side of the device is dripped into the reaction grooves 36 through the catalyst dripping holes 6, so that the gas in the reaction grooves 36 can accelerate reaction, the pressing frame 41 is used for installing and fixing a proton exchange membrane, the proton exchange membrane provides an attachment place for the reaction, and liquid water generated in the reaction can be gathered at the bottom of the reaction chamber under the action of gravity and downwards leaks through the water leakage holes 7.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention can be used in other related technical fields, directly or indirectly, or in the same way as the present invention.
Claims (6)
1. A fuel cell graphite bipolar plate structure characterized by: comprises a mounting sliding frame (1), an air inlet reaction unit (3) and an exchange membrane fixing unit (4);
mounting carriage (1): the two installation carriages (1) are respectively arranged at the left side and the right side of the polar plate main body (2), the polar plate main body (2) comprises a front positive plate and a rear negative plate, and the two polar plates are rotationally and symmetrically arranged between the two installation carriages (1);
gas-feed reaction unit (3): contain left air vent (31), air vent (32), strain gas piece (33), inlet port (34), limiting plate (35) and reaction tank (36), vertical left air vent (31) have been seted up in the left side of positive plate in polar plate main part (2), square reaction tank (36) have been seted up at the middle part of positive plate in polar plate main part (2), horizontal air vent (32) no less than six have been seted up to the inside of reaction tank (36), air vent (32) are linked together with the left air vent of left end, and the left end of air vent (32) inlays and is equipped with one and strain gas piece (33), a list inlet port (34) have evenly been seted up to the inside of straining gas piece (33), limiting plate (35) are installed to the front side of straining gas piece (33), limiting plate (35) and the preceding terminal surface parallel and level of polar plate main part (2);
exchange membrane fixing unit (4): is arranged at the front side of the positive plate in the plate main body (2) and is positioned at the periphery of the reaction tank (36).
2. A fuel cell graphite bipolar plate structure as claimed in claim 1, wherein: the air inlet reaction unit (3) further comprises a right vent hole (37), and the right side of the positive plate in the plate main body (2) is provided with the right vent hole (37) which has the same size as the left vent hole (31) but is not communicated with the vent groove (32).
3. A fuel cell graphite bipolar plate structure according to claim 2, wherein: the exchange membrane fixing unit (4) comprises a pressing frame (41), mounting holes (42) and screws (43), the pressing frame (41) is mounted on the outer edge of the reaction tank (36) and on the front side of a positive electrode plate in the electrode plate main body (2), the mounting holes (42) are formed in the four corners of the pressing frame (41), one screw (43) is mounted inside each mounting hole (42), and the pressing frame (41) is fixedly connected with the positive electrode plate through the screws (43).
4. A fuel cell graphite bipolar plate structure according to claim 3, wherein: still include mounting groove (5) and catalyst dropwise add hole (6), fore-and-aft mounting groove (5) have been seted up at the upper end middle part of polar plate main part (2), the bottom of mounting groove (5) just is located and has seted up one line catalyst dropwise add hole (6) with reaction tank (36) corresponding one side, catalyst dropwise add hole (6) and reaction tank (36) communicate.
5. A fuel cell graphite bipolar plate structure according to claim 3, wherein: the reaction tank is characterized by further comprising water leakage holes (7), a row of water leakage holes (7) are formed in the lower end of the reaction tank (36), and the water leakage holes (7) are communicated with the outer side of the lower end of the polar plate main body (2).
6. A fuel cell graphite bipolar plate structure according to claim 1, wherein: still include joint spout (8) and joint slide rail (9), a set of two joint spouts (8) of longitudinal symmetry are all seted up to the left and right sides of polar plate main part (2), the four corners position department of installation balladeur train (1) all installs and is provided with a fore-and-aft joint slide rail (9), joint slide rail (9) and joint spout (8) sliding connection of adjacent side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222248902.XU CN218101324U (en) | 2022-08-25 | 2022-08-25 | Graphite bipolar plate structure of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222248902.XU CN218101324U (en) | 2022-08-25 | 2022-08-25 | Graphite bipolar plate structure of fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN218101324U true CN218101324U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222248902.XU Active CN218101324U (en) | 2022-08-25 | 2022-08-25 | Graphite bipolar plate structure of fuel cell |
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|---|---|
| CN (1) | CN218101324U (en) |
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2022
- 2022-08-25 CN CN202222248902.XU patent/CN218101324U/en active Active
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