CN220189699U - Auxiliary drainage mechanism for public place of graphite bipolar plate cavity - Google Patents
Auxiliary drainage mechanism for public place of graphite bipolar plate cavity Download PDFInfo
- Publication number
- CN220189699U CN220189699U CN202321769865.5U CN202321769865U CN220189699U CN 220189699 U CN220189699 U CN 220189699U CN 202321769865 U CN202321769865 U CN 202321769865U CN 220189699 U CN220189699 U CN 220189699U
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- China
- Prior art keywords
- auxiliary
- area
- air
- cavity
- graphite
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 39
- 239000010439 graphite Substances 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000036647 reaction Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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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- Fuel Cell (AREA)
Abstract
The utility model provides an auxiliary drainage mechanism for a common part of a graphite bipolar plate cavity, which comprises an air cavity outlet, an air common port, a water cavity common port, a distribution area water flow passage and a common port bridging area, wherein the air common port is arranged at the outlet of the air cavity; the device is characterized by further comprising an auxiliary drainage area, wherein the auxiliary drainage area is arranged at the end part of the public bridge area; the auxiliary drainage area is provided with a gradient groove. The auxiliary drainage area and the internal stepped groove are additionally arranged in the public bridging area 104 of the bipolar plate to assist in draining water generated by reaction, so that occupied air passage space is released, gas is rapidly discharged, and reaction efficiency is improved; the structure of the step groove is slightly lower than the air outlet, which is favorable for separating water and air and quickening drainage. Besides the auxiliary drainage mechanism, other special-shaped mechanisms capable of promoting drainage can be additionally arranged.
Description
Technical Field
The utility model relates to the technical field of fuel cells, in particular to an auxiliary drainage mechanism for a common part of a graphite bipolar plate cavity.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electric energy, and is also called an electrochemical generator. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, is not limited by the Carnot cycle effect, and has high efficiency. The fuel cell uses fuel and oxygen as raw materials, has no mechanical transmission parts, and has little harmful gas emission and long service life. Therefore, fuel cells are increasingly popular in everyday equipment applications.
Among them, bipolar plates, also called collector plates, are one of the important components of fuel cells. Bipolar plates are used to separate fuel from oxidant, preventing gas from passing through, collecting and conducting electricity. The flow channels on the bipolar plate can uniformly distribute gas to the reaction layers of the electrodes for electrode reaction. The bipolar plate can also discharge heat and keep the temperature field of the battery uniform.
In the existing fuel cell, during the operation process, the hydrogen-oxygen fuel cell reaction is accompanied with the generation of water, so that the gas emission of the bipolar plate can be blocked, the reaction rate can be reduced, and the operation power of the fuel cell can be influenced.
Disclosure of Invention
In order to solve the problems that the reaction water of the bipolar plate can block the gas discharge and reduce the reaction rate of the fuel cell in the existing fuel cell, the utility model discloses an auxiliary drainage mechanism at the common part of the cavity of the graphite bipolar plate, and the technical scheme of the utility model is implemented as follows:
an auxiliary drainage mechanism for a common part of a graphite bipolar plate cavity comprises an air cavity outlet, an air common port, a water cavity common port, a distribution area water flow passage and a common port bridging area; the auxiliary drainage area is arranged at the end part of the public bridge area; the auxiliary drainage area is provided with a gradient groove.
Preferably, the air sealing ring is further included; the air sealing ring is arranged on the inner wall of the air public port.
Preferably, the width of the gradient groove is 0.5mm-2mm, and the depth of the gradient groove is 0.15mm-0.25mm.
Preferably, a water cavity auxiliary seal is arranged in the water cavity common port.
Preferably, the device also comprises an anode auxiliary drainage area and an anode water cavity auxiliary seal; the auxiliary anode water draining area is located on the graphite anode plate and corresponds to the auxiliary anode water draining area on the graphite cathode plate, and the auxiliary anode water cavity seal is located on the graphite anode plate and corresponds to the auxiliary water cavity seal on the graphite cathode plate.
The auxiliary drainage area and the internal stepped groove are additionally arranged in the public bridging area 104 of the bipolar plate to assist in draining water generated by reaction, so that occupied air passage space is released, gas is rapidly discharged, and reaction efficiency is improved; the structure of the step groove is slightly lower than the air outlet, which is favorable for separating water and air and quickening drainage. Besides the auxiliary drainage mechanism, other special-shaped mechanisms capable of promoting drainage can be additionally arranged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only one embodiment of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of an embodiment of a graphite bipolar plate cavity common auxiliary drain mechanism; (A-a in the figure is the position of the cross section)
FIG. 2 is a rear view of an embodiment of a graphite bipolar plate cavity common assist drain mechanism;
FIG. 3 is an enlarged view of the auxiliary drain area;
figure 4 is a cross-sectional view of A-A of the auxiliary drainage mechanism at the common place of the cavities of the graphite bipolar plates.
In the above drawings, each reference numeral indicates:
100, a graphite cathode plate;
101, at the outlet of the air cavity;
102, an air sealing ring;
103, an air common port;
104, a water cavity;
105, water cavity auxiliary seal;
106, a public port bridge area;
107, distribution area water flow channels;
108, an auxiliary drainage area;
109, step grooves;
200, graphite anode plate;
201, anode air outlet;
202, an anode auxiliary drainage area;
203, anode plate distribution area water flow channel;
204, the anode water cavity assists in sealing.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model and the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
In a specific embodiment, as shown in fig. 1-4, an auxiliary drainage mechanism for a common part of a graphite bipolar plate cavity comprises an air cavity outlet 101, an air common port 103, a water cavity common port 104, a distribution area water runner 107, a common port bridging area 106, an auxiliary drainage area 108, an air sealing ring 102 and the auxiliary drainage area 108 arranged at the end part of the common bridging area 106; the auxiliary drain region 108 is provided with a gradient trough 109. An air seal 102 is provided on the inner wall of the air common port 103. A water cavity auxiliary seal 105 is provided inside the water cavity common port 104. The gradient groove 109 has a groove width of 0.5mm-2mm and a groove depth of 0.15mm-0.25mm. An anode auxiliary drain region 202 and an anode water chamber auxiliary seal 204; an anode auxiliary drain region 202 is located on the graphite anode plate 200 and corresponds to the auxiliary drain region 108 location on the graphite cathode plate 100, and an anode water chamber auxiliary seal 204 is located on the graphite anode plate 200 and corresponds to the water chamber auxiliary seal location 109 on the graphite cathode plate 100.
This embodiment is applied to a graphite bipolar plate.
The graphite bipolar plate in this embodiment has a graphite anode plate provided with an anode air outlet 201 and an anode plate distribution area water flow channel 203. The positions of the graphite cathode plate 100 correspond to the positions of the air sealing ring 102 and the distribution area water flow passage 107 of the graphite cathode plate 100 respectively.
The graphite cathode plate 100 and the graphite anode plate 200 are glued to form a graphite bipolar plate, and air and water discharge unreacted gas through the air cavity outlet 101 and the common port bridging region 104, and the directions indicated by arrows in fig. 1, 2 and 3 are shown in detail, so that the hydrogen-oxygen fuel cell reaction is accompanied with the generation of water, the gas discharge is blocked, and the reaction rate is reduced; the gradient groove 109 of the auxiliary drainage structure 108 is additionally arranged in the public bridge area 104, so that water generated by reaction can be discharged in an auxiliary way, the occupied air passage space is released, the gas is discharged rapidly, and the reaction efficiency is improved; the side gradient groove 109 is slightly lower than the air outlet, which is beneficial to water and air separation and quickens water discharge. In addition, other special-shaped mechanisms capable of promoting water drainage can be additionally arranged.
The graphite bipolar plate is a thin product, the structure of the graphite bipolar plate is fully considered to be safe and stable, grooves are formed on two sides of the bipolar plate, the groove width is between 0.5 and 2mm, the groove depth is between 0.15 and 0.25mm, and the drainage structure is shown in fig. 3 and 4.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. An auxiliary drainage mechanism for a common part of a graphite bipolar plate cavity comprises an air cavity outlet, an air common port, a water cavity common port, a distribution area water flow passage and a common port bridging area; the device is characterized by further comprising an auxiliary drainage area, wherein the auxiliary drainage area is arranged at the end part of the public port bridging area; the auxiliary drainage area is provided with a gradient groove.
2. The graphite bipolar plate cavity common auxiliary drainage mechanism of claim 1, further comprising an air seal ring; the air sealing ring is arranged on the inner wall of the air public port.
3. The auxiliary drainage mechanism for the common place of the cavities of the graphite bipolar plates according to claim 2, wherein the groove width of the gradient groove is 0.5mm-2mm, and the groove depth is 0.15mm-0.25mm.
4. A graphite bipolar plate cavity common auxiliary drainage mechanism according to claim 3, wherein a water cavity auxiliary seal is arranged in the water cavity common port.
5. The graphite bipolar plate cavity common auxiliary drain mechanism of claim 3, further comprising an anode auxiliary drain area and an anode water cavity auxiliary seal; the auxiliary anode water draining area is located on the graphite anode plate and corresponds to the auxiliary anode water draining area on the graphite cathode plate, and the auxiliary anode water cavity seal is located on the graphite anode plate and corresponds to the auxiliary water cavity seal on the graphite cathode plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321769865.5U CN220189699U (en) | 2023-07-07 | 2023-07-07 | Auxiliary drainage mechanism for public place of graphite bipolar plate cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321769865.5U CN220189699U (en) | 2023-07-07 | 2023-07-07 | Auxiliary drainage mechanism for public place of graphite bipolar plate cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220189699U true CN220189699U (en) | 2023-12-15 |
Family
ID=89109902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321769865.5U Active CN220189699U (en) | 2023-07-07 | 2023-07-07 | Auxiliary drainage mechanism for public place of graphite bipolar plate cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220189699U (en) |
-
2023
- 2023-07-07 CN CN202321769865.5U patent/CN220189699U/en active Active
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