CN216928634U - Graphite bipolar plate of proton exchange membrane fuel cell - Google Patents
Graphite bipolar plate of proton exchange membrane fuel cell Download PDFInfo
- Publication number
- CN216928634U CN216928634U CN202122201561.6U CN202122201561U CN216928634U CN 216928634 U CN216928634 U CN 216928634U CN 202122201561 U CN202122201561 U CN 202122201561U CN 216928634 U CN216928634 U CN 216928634U
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- Prior art keywords
- bipolar plate
- fuel cell
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- gas
- reaction
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- 239000000446 fuel Substances 0.000 claims abstract description 29
- 239000012528 membrane Substances 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 64
- 239000000498 cooling water Substances 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000012495 reaction gas Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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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- Fuel Cell (AREA)
Abstract
The utility model relates to the technical field of proton exchange membrane fuel cells, and discloses a graphite bipolar plate of a proton exchange membrane fuel cell, which comprises a flow field reaction area, wherein the flow field reaction area is provided with a plurality of reaction ridges which are arranged in parallel and form a plurality of first grooves, the first grooves are communicated with a first gas distribution area and a second gas distribution area, a plurality of second grooves with the same depth as the first grooves are arranged in the length direction of each reaction ridge, and a gas pressure and accumulated water regulating channel is formed by the second grooves with the same position and a plurality of same positions on each reaction ridge. The beneficial effects are that: through set up the second slot on the reaction ridge and make the second slot form the regulation passageway of gas and ponding, can make ponding along the first slot runner of regulation passageway to the runner of both sides, avoid ponding to pile up in a first slot. Meanwhile, the adjusting channel can also enable gas to flow through the adjusting channel, so that the gas pressure in different first grooves is balanced, and accumulated water is easier to discharge.
Description
Technical Field
The utility model relates to the technical field of proton exchange membrane fuel cells, in particular to a graphite bipolar plate of a proton exchange membrane fuel cell.
Background
The Proton Exchange Membrane Fuel Cell (PEMFC) is a power generation device which directly converts chemical energy into electric energy, has the characteristics of high conversion efficiency, no pollution, quick low-temperature start, low running noise and the like, can be widely applied to the fields of traffic transportation of automobiles, ships, trams and the like, and can also be applied to the fields of fixed power stations, portable electrical equipment and the like.
The PEMFC is generally assembled by stacking a plurality of bipolar plates and a membrane electrode, wherein the membrane electrode forms a single cell between the two bipolar plates, and the single cells are connected to form the whole stack. The bipolar plate is used as a core part of the PEMFC, has the functions of providing a channel for reaction gas, collecting current, conducting heat, supporting a membrane electrode, isolating the reaction gas, draining water and the like, and simultaneously provides a cooling liquid channel in the middle of the bipolar plate to control the temperature of an electric pile.
The bipolar plate in the prior art mainly adopts a straight flow channel, a snake flow channel and other flow channel forms, and water generated in the flow channels is not easy to discharge in time. Meanwhile, the reaction gas in the bipolar plate flow channel is not uniformly distributed, so that the water generated in the flow channel is further prevented from being discharged in time, the phenomenon of water flooding of individual flow channels is easily caused, the overall performance of the PEMFC pile is influenced, and the problem of shutdown caused by too low single cell voltage can be caused in severe cases.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is: the flow channel of the PEMFC is improved, so that generated water can be discharged in time, and meanwhile, the air pressure in the flow channel is balanced, so that the generated water is easier to discharge.
In order to achieve the aim, the utility model discloses a graphite bipolar plate of a proton exchange membrane fuel cell, wherein a first inlet and outlet area, a first gas distribution area, a flow field reaction area, a second gas distribution area and a second inlet and outlet area are sequentially arranged on the bipolar plate from left to right; the flow field reaction zone is provided with a plurality of reaction ridges, reaction ridge parallel arrangement just forms a plurality of first grooves, first groove intercommunication first gas distribution district and second gas distribution district have seted up a plurality of and the unanimous second grooves of first groove degree of depth on the length direction of every reaction ridge, the second groove on every reaction ridge sets up the same and a plurality of position the same second groove component atmospheric pressure and ponding regulation channel.
Further, the interval of the second grooves on the same reaction ridge is 30cm to 40 cm.
Further, the width of the second trench is 2cm to 3 cm.
Further, a glue line groove is arranged between the first inlet and outlet area and the first gas distribution area; a glue line groove is arranged between the second inlet and outlet area and the second gas distribution area.
Furthermore, the first inlet and outlet area of the bipolar plate is provided with a first gas inlet, a cooling water outlet and a second gas outlet, and the second inlet and outlet area of the bipolar plate is provided with a first gas outlet, a cooling water inlet and a second gas inlet.
In one embodiment of the utility model, the bipolar plate is an oxygen plate of a fuel cell.
In one embodiment of the utility model, the bipolar plate is a hydrogen plate of a fuel cell.
The utility model also discloses a bipolar plate and an oxygen polar plate of the fuel cell using the bipolar plate.
The utility model also discloses a bipolar plate and a hydrogen plate using the fuel cell.
Compared with the prior art, the graphite bipolar plate of the proton exchange membrane fuel cell of the embodiment of the utility model has the beneficial effects that: through set up the second slot on the reaction ridge and make the second slot form the regulation passageway of gas and ponding, can make ponding along the first slot runner of regulation passageway to the runner of both sides, avoid ponding to pile up in a first slot. Meanwhile, the adjusting channel can also enable gas to flow in the channel through the adjusting channel, so that the gas pressure in different first grooves is balanced, and accumulated water is easier to discharge.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of the reaction ridge of the present invention;
FIG. 3 is a schematic view of the utility model in a partially enlarged view in FIG. 2;
in the figure, 1, a first gas inlet; 2. a cooling water outlet; 3. a second gas outlet; 4. a first gas outlet; 5. a cooling water inlet; 6. a second gas inlet; 7. a glue line groove; 8. a gas distribution region; 9. a flow field reaction zone; 91. a reaction ridge; 92. a first trench; 93. a second trench.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
Example 1:
referring to the attached figures 1-3, the utility model discloses a graphite bipolar plate of a proton exchange membrane fuel cell, wherein a first inlet and outlet area, a first gas distribution area, a flow field reaction area 9, a second gas distribution area and a second inlet and outlet area are sequentially arranged on the bipolar plate from left to right; flow field reaction zone 9 is provided with a plurality of reaction ridges 91, reaction ridge 91 parallel arrangement just forms a plurality of first grooves 92, first groove 92 communicates first gas distribution district and second gas distribution district, has seted up a plurality of and the unanimous second slot 93 of first groove 92 degree of depth on the length direction of every reaction ridge 91, second slot 93 on every reaction ridge 91 sets up the same and a plurality of same second slot 93 constitution atmospheric pressure in position and ponding regulation channel.
The bipolar plate is provided with a gas distribution region 8, and the gas distribution region 8 comprises a first gas distribution region and a second gas distribution region for distributing gas for gas inlet and gas outlet respectively.
The water produced in the flow field reaction zone 9 and the pressure in the flow field reaction zone 9 are not balanced during use of the cell due to interference from complex reaction conditions and other factors in the flow field reaction zone 9. Meanwhile, if more water is accumulated in the battery to influence the reaction, the flooding phenomenon of individual flow channels is caused, and the performance of the whole battery is further influenced. However, in the straight flow channel or the serpentine flow channel in the prior art, since there is no mutually communicated groove between the flow channels, the pressure of the flow field reaction region 9 cannot be balanced, and accumulated water cannot be conveniently discharged by means of the adjacent flow channels. Therefore, in the technical scheme of the utility model, the second groove 93 is formed to balance the air pressure of the flow field reaction zone 9, and the adjacent flow channels can divide the accumulated water, so that the accumulated water can be discharged more quickly.
For better technical effect, the second grooves 93 are disposed at the same positions of the reaction ridges 91, so that the accumulated water or gas can more directly and rapidly pass through the first grooves 92 formed between the reaction ridges 91 to reach the region with less accumulated water or low gas pressure. So that it is more rapid when draining accumulated water or equalizing air pressure. If the second grooves 93 are not provided at the same position, the accumulated water and the gas may not rapidly reach the corresponding flow passages, and the efficiency of accumulated water discharge and the time for air pressure equilibrium may be reduced.
For better water accumulation and air pressure balancing effect, the second grooves 93 on the same reaction ridge 91 are spaced at intervals of 30cm to 40 cm.
In order to achieve better water accumulation and air pressure balancing effects, the width of the second groove 93 is 2cm to 3 cm.
A glue line groove 7 is arranged between the first inlet and outlet area and the first gas distribution area; a glue line groove 7 is arranged between the second inlet and outlet area and the second gas distribution area. The glue line groove 7 plays a role in sealing, and improper mixing of gas is avoided.
The first inlet and outlet area of the bipolar plate is provided with a first gas inlet 1, a cooling water outlet 2 and a second gas outlet 3, and the second inlet and outlet area of the bipolar plate is provided with a first gas outlet 4, a cooling water inlet 5 and a second gas inlet 6.
Example 2:
on the basis of example 1, the bipolar plate is an oxygen plate of a fuel cell. The first gas is oxygen and the second gas is air.
The first inlet and outlet area of the bipolar plate is provided with an oxygen inlet, a cooling water outlet 2 and an air outlet, and the second inlet and outlet area of the bipolar plate is provided with an oxygen outlet, a cooling water inlet 5 and an air inlet. The oxygen inlet corresponds to the first gas inlet 1, the oxygen outlet corresponds to the first gas outlet 4, the air outlet corresponds to the second gas outlet 3, and the air inlet corresponds to the second gas inlet 6. The oxygen inlet, the cooling water outlet 2 and the air outlet of the first inlet and outlet area are arranged from top to bottom in sequence. The oxygen outlet, the cooling water inlet 5 and the air inlet of the second inlet and outlet area are arranged from top to bottom in sequence.
Example 3:
on the basis of example 1, the bipolar plate is a hydrogen plate of a fuel cell. The first gas is hydrogen and the second gas is air.
The first inlet and outlet area of the bipolar plate is provided with a hydrogen inlet, a cooling water outlet 2 and an air outlet, and the second inlet and outlet area of the bipolar plate is provided with a hydrogen outlet, a cooling water inlet 5 and an air inlet. The hydrogen inlet corresponds to the first gas inlet 1, the hydrogen outlet corresponds to the first gas outlet 4, the air outlet corresponds to the second gas outlet 3, and the air inlet corresponds to the second gas inlet 6. The hydrogen inlet, the cooling water outlet 2 and the air outlet of the first inlet and outlet area are arranged from top to bottom in sequence. The hydrogen outlet, the cooling water inlet 5 and the air inlet of the second inlet and outlet area are arranged from top to bottom in sequence.
Example 4:
on the basis of embodiment 2, the utility model also discloses a bipolar plate, and an oxygen electrode plate of the fuel cell in the embodiment 2 is applied.
Example 5:
on the basis of embodiment 3, the utility model also discloses a bipolar plate, and a hydrogen plate of the fuel cell in embodiment 3 is applied.
Compared with the prior art, the graphite bipolar plate of the proton exchange membrane fuel cell of the embodiment of the utility model has the beneficial effects that: through set up second slot 93 on reaction ridge 91 and make second slot 93 form the regulation passageway of gas and ponding, can make ponding along the first slot 92 runner of the passageway to both sides of regulation passageway, avoid ponding to pile up in a first slot 92. Meanwhile, the adjusting channel can also enable gas to flow through the adjusting channel, so that the gas pressure in different first grooves 92 is balanced, and accumulated water is easier to discharge.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A graphite bipolar plate of a proton exchange membrane fuel cell is characterized in that a first inlet and outlet area, a first gas distribution area, a flow field reaction area, a second gas distribution area and a second inlet and outlet area are sequentially arranged on the bipolar plate from left to right; the flow field reaction zone is provided with a plurality of reaction ridges, reaction ridge parallel arrangement just forms a plurality of first grooves, first groove intercommunication first gas distribution district and second gas distribution district have seted up a plurality of and the unanimous second grooves of first groove degree of depth on the length direction of every reaction ridge, the second groove on every reaction ridge sets up the same and a plurality of position the same second groove component atmospheric pressure and ponding regulation channel.
2. The graphite bipolar plate for proton exchange membrane fuel cell according to claim 1, wherein the second grooves on the same reaction ridge are spaced at intervals of 30cm to 40 cm.
3. The graphite bipolar plate for proton exchange membrane fuel cell according to claim 1, wherein the width of the second groove is 2cm to 3 cm.
4. The graphite bipolar plate for proton exchange membrane fuel cell according to claim 1, wherein a glue line groove is arranged between the first inlet/outlet area and the first gas distribution area; a glue line groove is arranged between the second inlet and outlet area and the second gas distribution area.
5. The graphite bipolar plate for a proton exchange membrane fuel cell according to claim 1, wherein the first inlet/outlet region of the bipolar plate is provided with a first gas inlet, a cooling water outlet and a second gas outlet, and the second inlet/outlet region of the bipolar plate is provided with a first gas outlet, a cooling water inlet and a second gas inlet.
6. The graphite bipolar plate for proton exchange membrane fuel cell according to any one of claims 1 to 5, wherein the bipolar plate is an oxygen plate of a fuel cell.
7. The graphite bipolar plate for proton exchange membrane fuel cell according to any one of claims 1 to 5, wherein the bipolar plate is a hydrogen plate of a fuel cell.
8. A bipolar plate, characterized in that the oxygen plate of the fuel cell according to claim 6 is applied.
9. A bipolar plate, characterized in that the hydrogen plate of the fuel cell according to claim 7 is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122201561.6U CN216928634U (en) | 2021-09-10 | 2021-09-10 | Graphite bipolar plate of proton exchange membrane fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122201561.6U CN216928634U (en) | 2021-09-10 | 2021-09-10 | Graphite bipolar plate of proton exchange membrane fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN216928634U true CN216928634U (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122201561.6U Active CN216928634U (en) | 2021-09-10 | 2021-09-10 | Graphite bipolar plate of proton exchange membrane fuel cell |
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| Country | Link |
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| CN (1) | CN216928634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115275248A (en) * | 2022-08-30 | 2022-11-01 | 上海捷氢科技股份有限公司 | Fuel cell and bipolar plate assembly thereof |
-
2021
- 2021-09-10 CN CN202122201561.6U patent/CN216928634U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115275248A (en) * | 2022-08-30 | 2022-11-01 | 上海捷氢科技股份有限公司 | Fuel cell and bipolar plate assembly thereof |
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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.10, Nanyuan District, Foshan Industrial Transfer Park, Silao Town, Yuncheng district, Yunfu City, Guangdong Province, 527326 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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230829 Address after: 017000 Room 601, Building B, Chuangye Building, Ejin Horo Banner, Ordos City, Inner Mongolia Autonomous Region Patentee after: Ordos Guohong Hydrogen Energy Technology Co.,Ltd. Patentee after: Guohong Hydrogen Energy Technology (Jiaxing) Co.,Ltd. Address before: 314000 Room 501-2, Building 37, Hangzhou Bay New Economic Park, Port District, Jiaxing City, Zhejiang Province Patentee before: Guohong Hydrogen Energy Technology (Jiaxing) Co.,Ltd. |
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| TR01 | Transfer of patent right |