CN210272550U - Bipolar plate of fuel cell - Google Patents
Bipolar plate of fuel cell Download PDFInfo
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- CN210272550U CN210272550U CN201921398653.4U CN201921398653U CN210272550U CN 210272550 U CN210272550 U CN 210272550U CN 201921398653 U CN201921398653 U CN 201921398653U CN 210272550 U CN210272550 U CN 210272550U
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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 relates to a fuel cell technical field especially relates to a fuel cell bipolar plate, including hydrogen polar plate and oxygen polar plate, the hydrogen polar plate is equipped with hydrogen runner, and the oxygen polar plate is equipped with the air runner, and hydrogen runner and air runner's inlet end all are equipped with hydrogen entry, air inlet and coolant liquid entry, and hydrogen runner and air runner's the end of giving vent to anger all are equipped with hydrogen export, air outlet and coolant liquid export, and the cross sectional area of hydrogen entry is greater than the cross sectional area of hydrogen export, and the cross sectional area of air inlet is less than the cross sectional area of air outlet. On one hand, the flow velocity is increased, and the water generated after the reaction is discharged is accelerated; on the second hand, the over-high flow rate of the air outlet is avoided, and the conversion efficiency of the air and the hydrogen is improved; and in the third aspect, the problem of overlarge pressure difference between hydrogen and air at the air outlet is avoided, and the service life of the galvanic pile is prolonged.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to a fuel cell bipolar plate.
Background
The fuel cell is an electrochemical reaction device capable of converting chemical energy into electric energy, has the advantages of high energy conversion efficiency, zero emission, no mechanical noise and the like, and is favored in the fields of military affairs and civil use. Proton Exchange Membrane Fuel Cells (PEMFC) adopt a solid polymer membrane as an electrolyte, have the advantages of simple structure, low working temperature and the like, and have the advantage of being unique as a mobile power supply. International well-known automobiles such as japan toyota automobiles and korean modern automobiles have developed mass-produced fuel cell electric vehicles (FCEV or FCV) powered by PEMFC.
Each PEMFC cell is composed of two plates (a hydrogen plate and an oxygen plate) and a membrane electrode sandwiched between the two plates. The hydrogen plate of the PEMFC is provided with a fuel flow channel, which is a place where fuel flows and is transferred, through which the fuel is transferred to the anode catalyst. The oxygen electrode plate of the PEMFC is provided with an oxidant flow channel, which is a place where an oxidant (oxygen or air) flows and is transported, through which the oxidant reaches the cathode catalyst. By means of the fuel flow passage and the oxidant flow passage, the fuel and the oxidant can be supplied into the fuel cell continuously so that the fuel cell can output electric power continuously.
In the industrial introduction stage of the fuel cell in the prior art, the problems of further improvement of conversion efficiency, prolonging of service life, reduction of cost and the like are urgently needed to be solved. The development and production of fuel cells integrates multidisciplinary and multi-field advanced technologies, and any improvement in conversion efficiency, service life and cost reduction has great economic and social benefits.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fuel cell bipolar plate who helps improving fuel cell conversion efficiency, job stabilization nature and galvanic pile life-span.
In order to realize the above object, the utility model provides a fuel cell bipolar plate, including hydrogen polar plate and oxygen polar plate, the hydrogen polar plate is equipped with the hydrogen runner, the oxygen polar plate is equipped with the air runner, the inlet end of hydrogen runner and air runner all is equipped with hydrogen entry, air inlet and coolant liquid entry, the end of giving vent to anger of hydrogen runner and air runner all is equipped with hydrogen export, air outlet and coolant liquid export, the cross sectional area of hydrogen entry is greater than the cross sectional area of hydrogen export, the cross sectional area of air inlet is less than the cross sectional area of air outlet.
Optionally, the hydrogen flow channel and the air flow channel each include an air inlet distribution region, a reaction region, and an air outlet distribution region, and the reaction region is provided with a plurality of grooves formed by arranging a plurality of reaction ridges in parallel.
Optionally, the gas inlet distribution area and the gas outlet distribution area of the hydrogen flow channel are both provided with a distribution island and a hydrogen flow guide ridge, the hydrogen flow guide ridge is connected with the reaction ridge, and the distribution islands are uniformly arranged at the gas inlet end of the hydrogen flow guide ridge.
Optionally, the distribution island is a cylinder.
Optionally, the air inlet distribution area and the air outlet distribution area of the air flow channel are provided with air guide ridges, and the air guide ridges extend from the reaction area to the middle of the air inlet end of the air inlet distribution area and the middle of the air outlet end of the air outlet distribution area respectively.
Optionally, the depths of the inlet distribution area and the outlet distribution area are 0.03-0.07 mm greater than the depth of the reaction area.
Optionally, the hydrogen pole plate and the oxygen pole plate are provided with inspection ports.
Optionally, the hydrogen plate and the oxygen plate are both provided with positioning holes.
Optionally, the air inlet is disposed between the hydrogen inlet and the coolant inlet, and the air outlet is disposed between the hydrogen outlet and the coolant outlet.
Optionally, the hydrogen electrode plate and the oxygen electrode plate are both provided with sealing grooves, and the sealing grooves are arranged along the peripheries of the hydrogen flow channel, the air flow channel, the hydrogen inlet, the air inlet and the cooling liquid inlet.
Implement the utility model discloses an embodiment has following technological effect:
on one hand, the cross section area of the hydrogen inlet of the utility model is larger than that of the hydrogen outlet, thereby reducing the flow of hydrogen at the hydrogen outlet, being beneficial to increasing the flow velocity and accelerating the water generated after the discharge reaction; in the second aspect, the cross-sectional area of the air inlet is smaller than that of the air outlet, and the air outlet pressure is reduced and the volume is increased due to the larger pressure difference between the air side inlet and the air outlet, so that the air flow speed is prevented from being too fast by increasing the area of the air outlet; in the third aspect, the air inlets and the hydrogen inlets of the hydrogen electrode plate and the oxygen electrode plate are arranged on the same side, so that the problem of overlarge pressure difference between hydrogen and air at the air outlet is avoided, and the service life of the galvanic pile is prolonged.
Drawings
Fig. 1 is a schematic structural view of a hydrogen electrode plate according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
fig. 3 is a longitudinal partial sectional view of a hydrogen electrode plate according to a preferred embodiment of the present invention;
FIG. 4 is a schematic structural view of an oxygen electrode plate according to a preferred embodiment of the present invention;
FIG. 5 is an enlarged schematic view at B in FIG. 4;
fig. 6 is a longitudinal partial sectional view of an oxygen electrode plate according to a preferred embodiment of the present invention.
Description of reference numerals:
1. the hydrogen electrode plate comprises a hydrogen electrode plate, 2, an oxygen electrode plate, 3, a hydrogen flow channel, 4, an air flow channel, 5, a hydrogen inlet, 6, an air inlet, 7, a cooling liquid inlet, 8, a hydrogen outlet, 9, an air outlet, 10, a cooling liquid outlet, 11, an air inlet distribution area, 12, a reaction area, 13, an air outlet distribution area, 14, a distribution island, 15, a hydrogen flow guide ridge, 16, an air flow guide ridge, 17, a routing inspection opening, 18, a positioning hole, 19, a sealing groove, 20 and a reaction ridge.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "longitudinal", "transverse", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 to 6, the present embodiment provides a fuel cell bipolar plate, including a hydrogen plate 1 and an oxygen plate 2, the hydrogen plate 1 is provided with a hydrogen flow channel 3, the oxygen plate 2 is provided with an air flow channel 4, the inlet ends of the hydrogen flow channel 3 and the air flow channel 4 are respectively provided with a hydrogen inlet 5, an air inlet 6 and a cooling liquid inlet 7, the outlet ends of the hydrogen flow channel 3 and the air flow channel 4 are respectively provided with a hydrogen outlet 8, an air outlet 8 and a cooling liquid outlet 10, the cross-sectional area of the hydrogen inlet 5 is larger than that of the hydrogen outlet 8, and the cross-sectional area of the air inlet 6 is smaller than that of the air outlet 8. On one hand, the cross section area of the hydrogen inlet 5 of the utility model is larger than that of the hydrogen outlet 8, thereby reducing the flow of hydrogen at the hydrogen outlet 8, being beneficial to increasing the flow velocity and accelerating the discharge of water generated after reaction; in the second aspect, the cross-sectional area of the air inlet 6 is smaller than that of the air outlet 8, and the air outlet 8 is reduced in pressure and increased in volume due to the larger air side inlet outlet pressure difference, so that the air flow rate is prevented from being too fast by increasing the cross-sectional area of the air outlet 8; in the third aspect, the air inlets 6 and 5 of the hydrogen electrode plate 1 and the oxygen electrode plate 2 are arranged on the same side, so that the problem of overlarge pressure difference between hydrogen and air at the air outlet 8 is avoided, and the service life of the galvanic pile is prolonged.
Further, referring to fig. 1 and 4, the hydrogen flow channel 3 and the air flow channel 4 of the present embodiment each include an inlet distribution area 11, a reaction area 12 and an outlet distribution area 13, and the reaction area 12 is provided with a plurality of grooves formed by arranging a plurality of reaction ridges 20 in parallel, which helps to uniformly distribute air and hydrogen.
Wherein, referring to fig. 1 and fig. 2, the gas inlet distribution area 11 and the gas outlet distribution area 13 of the hydrogen flow channel 3 are both provided with a distribution island 14 and a hydrogen flow guide ridge 15, the hydrogen flow guide ridge 15 is connected with the reaction ridge 20, the distribution island 14 is uniformly arranged at the gas inlet end of the hydrogen flow guide ridge 15, hydrogen entering the reaction area 12 from the gas inlet distribution area 11 of the hydrogen flow channel 3 passes through the distribution island 14 and the hydrogen flow guide ridge 15 and then uniformly enters different positions of the reaction area 12 for reaction, the gas inlet distribution area 11 and the gas outlet distribution area 13 of the air flow channel 4 are provided with air flow guide ridges 16, the air flow guide ridges 16 extend from the reaction area 12 to the middle of the gas inlet end of the gas inlet distribution area 11 and the middle of the gas outlet end of the gas outlet distribution area 13 respectively, so that air uniformly enters the reaction area 12, the reaction efficiency is improved, after reaction, hydrogen is redistributed by the hydrogen flow guide ridge 15 and the distribution island 14, so that hydrogen and air can be distributed again by impacting on the cylinder when entering.
Referring to fig. 3 and 6, in the present embodiment, the depths of the inlet distribution area 11 and the outlet distribution area 13 are greater than the depth of the reaction area 12 by 0.03-0.07 mm, and specifically, the depths of the inlet distribution area 11 and the outlet distribution area 13 are greater than the depth of the reaction area 12 by 0.05mm, even if the difference H between the depths of the inlet distribution area 11 and the outlet distribution area 13 and the depth of the reaction area 12 is 0.05mm, after hydrogen and air enter and leave the reaction area 12, there are certain amounts of hydrogen and air buffers in the inlet distribution area 11 and the outlet distribution area 13, which is beneficial to the low-temperature start-up of the stack.
Referring to fig. 1 and 4, the hydrogen electrode plate 1 and the oxygen electrode plate 2 of the embodiment are both provided with inspection ports 17, so as to facilitate electrical performance tests of the hydrogen electrode plate 1 and the oxygen electrode plate 2.
Furthermore, the positioning holes 18 are formed in the hydrogen electrode plate 1 and the oxygen electrode plate 2, so that the hydrogen electrode plate 1 and the oxygen electrode plate 2 can be conveniently installed in a contraposition mode, and the installation quality is improved.
In this embodiment, the air inlet 6 is disposed between the hydrogen inlet 5 and the coolant inlet 7, and the air outlet 8 is disposed between the hydrogen outlet 8 and the coolant outlet 10, so as to optimize the air-side fluid distribution, and to make the reaction between the air and the hydrogen gas uniformly distributed, thereby making the current distribution generated by the fuel cell reaction more uniform.
Wherein, the seal groove 19 has all been seted up to hydrogen polar plate 1 and oxygen polar plate 2, and seal groove 19 is arranged along hydrogen runner 3, air runner 4, hydrogen entry 5, air inlet 6 and coolant liquid entry 7 periphery, makes and utilizes seal groove 19 to keep apart between hydrogen and air and the coolant liquid, guarantees fuel cell stability in use and security.
In summary, on the one hand, the cross sectional area of the hydrogen inlet 5 of the present invention is larger than that of the hydrogen outlet 8, so that the flow of hydrogen at the hydrogen outlet 8 is reduced, which is beneficial to increase the flow velocity and accelerate the discharge of water generated after the reaction; in the second aspect, the cross-sectional area of the air inlet 6 is smaller than that of the air outlet 8, and the air outlet 8 is reduced in pressure and increased in volume due to the larger air side inlet outlet pressure difference, so that the air flow rate is prevented from being too fast by increasing the cross-sectional area of the air outlet 8; in the third aspect, the air inlets 6 and 5 of the hydrogen electrode plate 1 and the oxygen electrode plate 2 are arranged on the same side, so that the problem of overlarge pressure difference between hydrogen and air at the air outlet 8 is avoided, and the service life of the galvanic pile is prolonged.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. The bipolar plate of the fuel cell is characterized by comprising a hydrogen polar plate and an oxygen polar plate, wherein the hydrogen polar plate is provided with a hydrogen flow channel, the oxygen polar plate is provided with an air flow channel, the air inlet ends of the hydrogen flow channel and the air flow channel are respectively provided with a hydrogen inlet, an air inlet and a cooling liquid inlet, the air outlet ends of the hydrogen flow channel and the air flow channel are respectively provided with a hydrogen outlet, an air outlet and a cooling liquid outlet, the cross section area of the hydrogen inlet is larger than that of the hydrogen outlet, and the cross section area of the air inlet is smaller than that of the air outlet.
2. The fuel cell bipolar plate of claim 1, wherein each of the hydrogen flow channel and the air flow channel comprises an inlet gas distribution region, a reaction region and an outlet gas distribution region, and the reaction region is provided with a plurality of grooves formed by parallel arrangement of a plurality of reaction ridges.
3. The fuel cell bipolar plate of claim 2, wherein the inlet distribution region and the outlet distribution region of the hydrogen flow channel are each provided with a distribution island and a hydrogen guide ridge, the hydrogen guide ridge is connected with the reaction ridge, and the distribution islands are uniformly arranged at the inlet end of the hydrogen guide ridge.
4. The fuel cell bipolar plate of claim 3 wherein said distribution islands are cylinders.
5. The bipolar plate of claim 2, wherein the inlet distribution region and the outlet distribution region of the air flow channel are provided with air guide ridges extending from the reaction region to the middle of the inlet end of the inlet distribution region and the middle of the outlet end of the outlet distribution region, respectively.
6. The fuel cell bipolar plate of claim 2, wherein the inlet gas distribution region and the outlet gas distribution region have a depth greater than a depth of the reaction region by 0.03 to 0.07 mm.
7. The fuel cell bipolar plate of claim 1, wherein the hydrogen plate and the oxygen plate are provided with routing inspection ports.
8. The fuel cell bipolar plate of claim 1, wherein the hydrogen plate and the oxygen plate are each formed with a positioning hole.
9. The fuel cell bipolar plate of claim 1, wherein the air inlet is disposed between the hydrogen inlet and the coolant inlet, and the air outlet is disposed between the hydrogen outlet and the coolant outlet.
10. The fuel cell bipolar plate of claim 1, wherein the hydrogen plate and the oxygen plate are each provided with a sealing groove, and the sealing grooves are arranged along the peripheries of the hydrogen gas flow channel, the air flow channel, the hydrogen inlet, the air inlet and the cooling liquid inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921398653.4U CN210272550U (en) | 2019-08-26 | 2019-08-26 | Bipolar plate of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921398653.4U CN210272550U (en) | 2019-08-26 | 2019-08-26 | Bipolar plate of fuel cell |
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| Publication Number | Publication Date |
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| CN210272550U true CN210272550U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921398653.4U Active CN210272550U (en) | 2019-08-26 | 2019-08-26 | Bipolar plate of fuel cell |
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| CN (1) | CN210272550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429296A (en) * | 2019-08-26 | 2019-11-08 | 广东国鸿氢能科技有限公司 | A kind of fuel battery double plates |
| CN111554950A (en) * | 2020-05-18 | 2020-08-18 | 浙江锋源氢能科技有限公司 | Bipolar plate, fuel cell unit, fuel cell and manufacturing method thereof |
-
2019
- 2019-08-26 CN CN201921398653.4U patent/CN210272550U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429296A (en) * | 2019-08-26 | 2019-11-08 | 广东国鸿氢能科技有限公司 | A kind of fuel battery double plates |
| CN111554950A (en) * | 2020-05-18 | 2020-08-18 | 浙江锋源氢能科技有限公司 | Bipolar plate, fuel cell unit, fuel cell and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 8, Hydrogen Energy Avenue, Foshan (Yunfu) Industrial Transfer Industrial Park, Silao Town, Yuncheng District, Yunfu City, Guangdong Province, 527300 Patentee after: Guangdong Guohong Hydrogen Energy Technology Co.,Ltd. Address before: No.9, Nanyuan District, Foshan (Yunfu) industrial transfer industrial park, Silao Town, Yuncheng district, Yunfu City, Guangdong Province Patentee before: GUANGDONG SINOSYNERGY HYDROGEN POWER TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 314000 Room 501-2, Building 37, Hangzhou Bay New Economic Park, Port District, Jiaxing City, Zhejiang Province Patentee after: Guohong Hydrogen Energy Technology (Jiaxing) Co.,Ltd. Address before: No. 8, Hydrogen Energy Avenue, Foshan (Yunfu) Industrial Transfer Industrial Park, Silao Town, Yuncheng District, Yunfu City, Guangdong Province, 527300 Patentee before: Guangdong Guohong Hydrogen Energy Technology Co.,Ltd. |
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| CP03 | Change of name, title or address |