CN220627861U - Novel bipolar plate structure - Google Patents
Novel bipolar plate structure Download PDFInfo
- Publication number
- CN220627861U CN220627861U CN202322019267.2U CN202322019267U CN220627861U CN 220627861 U CN220627861 U CN 220627861U CN 202322019267 U CN202322019267 U CN 202322019267U CN 220627861 U CN220627861 U CN 220627861U
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- bipolar plate
- outlet
- flow field
- field
- inlet
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 58
- 239000000110 cooling liquid Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 26
- 239000001257 hydrogen Substances 0.000 claims description 26
- 229910052739 hydrogen Inorganic materials 0.000 claims description 26
- 239000002826 coolant Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 29
- 239000000446 fuel Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012528 membrane Substances 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
- 238000000465 moulding Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000126 substance Substances 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
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model discloses a novel bipolar plate structure, which comprises a bipolar plate, wherein the bipolar plate is formed by stacking and fixedly connecting two single plates, and a flow field reaction area, a flow field reaction area and a three-cavity inlet and outlet area are respectively arranged on the bipolar plate; the three-cavity inlet and outlet area is arranged at the edges of the two sides of the bipolar plate, and is provided with an inlet and outlet channel which is used for enabling fluid to circulate uniformly; the flow field reaction area is provided with two adjacent inner sides of the three-cavity inlet and outlet area; the flow guide piece is used for uniformly distributing the fluid to the flow field reaction zone; the flow field reaction areas are arranged at the middle positions of the two flow field reaction areas, flow channel ridges and flow channel grooves are arranged in the flow field reaction areas and are communicated with the inlet and the outlet of the flow field reaction areas, so that fluid enters the flow field reaction areas for reaction; therefore, the distribution space of the gas and the cooling liquid is greatly increased, and the risks of pressure drop and flooding of the inlet and outlet of the gas and the cooling liquid are reduced.
Description
Technical Field
The utility model relates to the field of fuel cells, in particular to a novel bipolar plate structure.
Background
The hydrogen fuel cell is a power generation device which directly converts chemical energy in a fuel into electric energy by electrochemical reaction by taking hydrogen as the fuel. The bipolar plate is used as a core component of the hydrogen fuel cell, and the performance of the bipolar plate directly influences the performance of the fuel cell.
The bipolar plate is mainly divided into a hydrogen field, an air field and a cooling field, and when the fuel cell works, hydrogen passes through a flow field reaction zone through a hydrogen inlet and then enters the reaction zone to react with an anode catalyst; hydrogen passes through the flow field reaction zone through the hydrogen inlet and then enters the reaction zone to react with the negative catalyst; the cooling liquid passes through the flow field reaction zone through the cooling cavity inlet and then enters the reaction zone to carry out heat replacement, and the generated heat is taken out of the electric pile.
The reaction area of the bipolar plate needs a constant temperature environment with uniform gas pressure and flow velocity, and the performance is optimal, so the structural design of the flow field reaction area of the bipolar plate is particularly important. The structure of the traditional flow field reaction zone is a continuous strip structure consistent with the flow field, because the bipolar plate structure is generally characterized by small inlet and outlet and large flow field area, the equally-divided design is needed between the inlet and outlet and the reaction zone, but for the continuous strip structure, gas is easy to form a phenomenon of accumulation at the two ends of the inlet and outlet, so that the flow resistance of the bipolar plate is bigger before and after the bipolar plate, and flooding is easy to cause during the reaction; the cooling cavity is also like this, because of the continuity runner, the phenomenon of piling up can appear in the coolant liquid in import and export both sides, has increased the flow resistance of coolant liquid, greatly reduced the cooling effect of electric pile, influence electric pile performance.
The novel bipolar plate structure in the prior art has the following problems.
In the distribution structure of the existing fuel cell bipolar plate, most of the distribution structures adopt continuous strip structures consistent with the flow field, gas and cooling liquid mediums can only enter the flow field region through the flow field distribution region flow channel and reach the outlet through the flow field distribution region flow channel, and because the inlet and outlet of the bipolar plate are small and the flow field region is large, the gas and cooling liquid are easy to accumulate at the two sides of the inlet and outlet, so that the gas and cooling liquid flow resistance is increased, even the reaction region is flooded, and the performance of the electric pile is influenced.
Accordingly, there is a need for an improvement in the art for a new bipolar plate structure that addresses the above-described problems.
Disclosure of Invention
The utility model overcomes the defects of the prior art, provides a novel bipolar plate structure, and aims to solve the problems in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel bipolar plate structure comprising: the bipolar plate consists of two single plates, and a flow field reaction area, a distribution area and a three-cavity inlet and outlet area are respectively arranged on the bipolar plate;
the three-cavity inlet and outlet areas are arranged at the edges of the two sides of the bipolar plate;
the flow field reaction zone is arranged at the middle position of the two distribution zones, and a flow channel ridge and a flow channel groove are arranged in the flow field reaction zone;
a first boss, a second boss and an air field groove are arranged in the distribution area; the first bosses and the air field grooves are uniformly and alternately arranged in the distribution area, and the first bosses are contacted with the plane where the flow channel ridges are positioned to form gaps; the second boss forms a water field gap with the runner groove.
In a preferred embodiment of the utility model, the flow field reaction zone is arranged in the middle of the bipolar plate, the distribution zone is arranged at the left side and the right side of the flow field reaction zone, and the three-cavity inlet and outlet zone is arranged at the two sides of the distribution zone.
In a preferred embodiment of the present utility model, the flow channel ridge and the flow channel groove are communicated with the inlet and the outlet of the flow field reaction zone.
In a preferred embodiment of the present utility model, the left side of the three-cavity inlet and outlet area at the two side edges of the bipolar plate is sequentially from top to bottom: an air inlet, a coolant inlet, and a hydrogen outlet; the right side is provided with a hydrogen inlet, a cooling liquid outlet and an air outlet from top to bottom in sequence.
In a preferred embodiment of the present utility model, an inclined plane is further disposed in the distribution area, and the inclined plane is disposed at the outer edge of the second boss.
In a preferred embodiment of the present utility model, the plane of the second boss is located between the plane of the runner groove and the plane of the first boss.
In a preferred embodiment of the utility model, water field bosses are arranged at the water field positions corresponding to the air field grooves, and the water field bosses on the two single plates are mutually supported to form a water field channel.
In a preferred embodiment of the present utility model, a water field groove is formed at a water field corresponding to the first boss.
In a preferred embodiment of the utility model, the flow field reaction zone is arranged in the middle of the bipolar plate, two distribution zones are respectively arranged at two sides of the flow field reaction zone, the flow field reaction zone is communicated with the distribution zones, external hydrogen and air uniformly enter the flow field reaction zone through the distribution zones, and the hydrogen reacts with oxygen in the air.
The utility model solves the defects existing in the background technology, and has the following beneficial effects:
the utility model provides a novel bipolar plate structure, which is characterized in that a design of combining a circular boss and a linear groove is adopted, so that gas and cooling liquid can be quickly diffused into a reaction area after reaching a distribution area, compared with the traditional distribution area structure, the problems of large flow resistance and even flooding of the gas caused by small inlet and outlet and flow field reaction areas are avoided, the distribution space of the gas and the cooling liquid is greatly increased, the risks of pressure drop and flooding of the inlet and outlet of the gas and the cooling liquid are reduced, meanwhile, the design of the linear groove not only enhances the supporting strength of the bipolar plate, but also increases the distribution space of the gas, and meanwhile, compared with the traditional technology, the structure has larger gas field and water field space, the operation efficiency of the gas field and the water field is extremely high, the process molding difficulty is lower than that of the traditional continuous flow channel structure, and the cost is better.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is a perspective view of a preferred embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1 in accordance with the present utility model;
FIG. 3 is a first overall cross-sectional schematic of a preferred embodiment of the present utility model;
fig. 4 is a second overall cross-sectional schematic of a preferred embodiment of the utility model.
In the figure: 1. a bipolar plate; 11. a flow field reaction zone; 12. a distribution area (12); 13 three-cavity inlet and outlet; 111. a flow channel ridge; 112. a flow channel groove; 211. a first boss; 222. a second boss; 223. an air field groove; 2211. a water field groove; 2231. a water field boss; 301. a water field passage; 401. and (5) an inclined plane.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.
As shown in fig. 1 and 2, a novel bipolar plate 1 structure comprises: the bipolar plate 1, the bipolar plate 1 is composed of two single plates, and a flow field reaction area 11, a distribution area 12 and a three-cavity inlet and outlet area 13 are respectively arranged on the bipolar plate 1.
The three-cavity inlet and outlet areas are arranged at the edges of the two sides of the bipolar plate;
the three-cavity inlet and outlet area 13 at the two side edges of the bipolar plate 1 is sequentially from top to bottom: an air inlet, a coolant inlet, and a hydrogen outlet; the right side is from top to bottom in proper order hydrogen inlet, coolant outlet and air outlet, and the fluid that flows in the bipolar plate is coolant, hydrogen and three kinds of fluid of air, and the position department that flows hydrogen and air forms the air field, and the position department that flows the coolant forms the water field.
It should be noted that, the flow field reaction area 11 is disposed in the middle of the bipolar plate 1, the distribution area 12 is disposed at the left and right sides of the flow field reaction area 11, the three-cavity inlet and outlet area 13 is disposed at both sides of the distribution area 12, and the bipolar plate 1 is of the distribution area 12 structure; the bipolar plate 1 consists of two single plates, air and hydrogen are arranged on two sides of the bipolar plate, a cooling liquid is arranged in a middle channel after the two single plates are fixed, the single plates consist of a flow field reaction zone 11, a distribution zone 12 and a three-cavity inlet and outlet zone 13, the three-cavity inlet and outlet zone 13 is positioned on the two outermost sides of the bipolar plate 1, water, hydrogen and empty inlet and outlet channels are arranged on the left side of the bipolar plate, and the three inlet and outlet channels are sequentially from top to bottom: the right side is provided with a hydrogen inlet, a cooling outlet and an air outlet from top to bottom in sequence. The distribution area 12 is located between the inlet and outlet of the three cavities and is used for connecting the inlet and outlet of the gas and the cooling liquid, and uniformly distributing and guiding the gas and the cooling liquid to the flow field reaction area 11. The flow field reaction zone 11 is located between the distribution zones 12, is connected with the inlet and outlet of the distribution zones 12, and is a reaction place of hydrogen and oxygen.
A first boss 211, a second boss 222 and an air field groove 223 are arranged in the distribution area 12; the first bosses 211 and the air field grooves 223 are uniformly and alternately arranged in the distribution area 12, and the first bosses 211 are contacted with the plane where the flow channel ridges 111 are positioned to form gaps; the second boss 222 forms a water field gap with the runner trough 112.
It should be noted that, the distribution area 12 in this embodiment is divided into four parts, namely, the first boss 211 of the gas field of the distribution area 12, the second boss 222 of the gas field of the distribution area 12, the gas field groove 223 of the distribution area 12 and the inclined plane 401, wherein the gas field groove 223 of the distribution area 12 not only enhances the strength of the distribution area 12, but also increases the space of the gas field.
In a preferred embodiment of the present utility model, the distribution area 12 is further provided with an inclined surface 401, and the inclined surface 401 is disposed at the outer edge of the second boss 222; the plane of the second boss 222 is located between the plane of the runner slot 112 and the plane of the first boss 211; the water field boss 2231 is arranged at the water field corresponding to the air field groove 223, and the water field bosses 2231 on the two single plates are mutually supported to form the water field channel 301; a water field groove 2211 is formed at the water field corresponding to the first boss 211.
It should be noted that, the water field corresponding to the air field groove 223 of the distribution area 12 forms a water field boss of the distribution area 12, the water field bosses of the distribution area 12 corresponding to another single plate are mutually supported to form the water field channel 301, the water field corresponding to the first boss 211 of the air field of the distribution area 12 forms a water field groove 2211 of the distribution area 12, the space of the water field is increased, compared with the water field formed by the traditional continuous flow field, the water field space of the utility model is greatly improved, and the cooling performance of the bipolar plate 1 is also greatly improved.
The flow field reaction zone 11 is arranged at the middle position of the two distribution zones 12, and a flow channel ridge 111 and a flow channel groove 112 are arranged in the flow field reaction zone 11;
in a preferred embodiment of the present utility model, the flow channel ridge 111 and the flow channel groove 112 are in communication with the inlet and outlet of the flow field reaction zone 11.
In a preferred embodiment of the present utility model, the flow field reaction zone 11 is disposed in the middle of the bipolar plate 1, two distribution zones 12 are disposed on two sides of the bipolar plate, the flow field reaction zone 11 is in communication with the distribution zones 12, external hydrogen and air uniformly enter the flow field reaction zone 11 through the distribution zones 12, and the hydrogen reacts with oxygen in the air.
The flow field reaction region 11 is divided into two parts, namely a flow channel ridge 111 and a flow channel groove 112. The first bosses 211 are in the same plane with the flow channel ridges 111, and the membrane electrode contacts with the plane where the first bosses 211 of the gas field of the distribution area 12 and the flow channel ridges 111 are located, so that a channel with a gap being gas operation is formed, and the distribution area 12 is discretely distributed by a plurality of first bosses 211, so that the space of the gas channel is greatly increased. The plane of the second boss 222 of the gas field in the distribution area 12 is positioned between the flow channel groove 112 in the flow field distribution area 12 and the plane of the first boss 211 of the gas field in the distribution area 12, the gap formed by the flow channel groove 112 is the water field gap in the distribution area 12, and the inclined plane 401 is designed at the edge of the second boss 222 of the gas field in the distribution area 12, so that the smooth gas operation of the gas field and the water field at the joint of the second boss 222 of the gas field in the distribution area 12 and the flow channel groove 112 is ensured, and the flow resistance of the gas entering and exiting the flow field is greatly reduced.
The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (9)
1. A novel bipolar plate structure comprising: a bipolar plate (1), characterized in that; the bipolar plate (1) consists of two single plates, and a flow field reaction area (11), a distribution area (12) and a three-cavity inlet and outlet area (13) are respectively arranged on the bipolar plate (1);
the three-cavity inlet and outlet areas (13) are arranged at the edges of the two sides of the bipolar plate (1);
the flow field reaction area (11) is arranged at the middle position of the two distribution areas (12), and a flow channel ridge (111) and a flow channel groove (112) are arranged in the flow field reaction area (11);
a first boss (211), a second boss (222) and an air field groove (223) are arranged in the distribution area (12); the first bosses (211) and the air field grooves (223) are uniformly and alternately arranged in the distribution area (12), and the first bosses (211) are in contact with the plane where the runner ridges (111) are positioned to form gaps; the second boss (222) and the runner groove (112) form a water field gap.
2. A novel bipolar plate structure as in claim 1, wherein: the flow field reaction zone (11) is arranged at the middle position of the bipolar plate (1), the distribution zone (12) is arranged at the left side and the right side of the flow field reaction zone (11), and the three-cavity inlet and outlet zone (13) is arranged at the two sides of the distribution zone (12).
3. A novel bipolar plate structure as in claim 1, wherein: the flow channel ridge (111) is communicated with the flow channel groove (112) and is communicated with an inlet and an outlet of the flow field reaction zone (11).
4. A novel bipolar plate structure as in claim 1, wherein: the left side of a three-cavity inlet and outlet area (13) at the two side edges of the bipolar plate (1) is sequentially provided with the following parts from top to bottom: an air inlet, a coolant inlet, and a hydrogen outlet; the right side is provided with a hydrogen inlet, a cooling liquid outlet and an air outlet from top to bottom in sequence.
5. A novel bipolar plate structure as in claim 1, wherein: an inclined plane (401) is further arranged in the distribution area (12), and the inclined plane (401) is arranged at the outer side edge of the second boss (222).
6. The novel bipolar plate structure of claim 5 wherein: the plane of the second boss (222) is located between the plane of the runner groove (112) and the plane of the first boss (211).
7. The novel bipolar plate structure of claim 5 wherein: a water field boss (2231) is arranged at the water field corresponding to the air field groove (223), and the water field bosses (2231) on the two single plates are mutually supported to form a water field channel (301).
8. The novel bipolar plate structure of claim 5 wherein: a water field groove (2211) is formed at the water field corresponding to the first boss (211).
9. A novel bipolar plate structure as in claim 1, wherein: the flow field reaction zone (11) is arranged in the middle of the bipolar plate (1), two distribution zones (12) are respectively arranged on two sides of the bipolar plate, the flow field reaction zone (11) is communicated with the distribution zones (12), external hydrogen and air uniformly enter the flow field reaction zone (11) through the distribution zones (12), and the hydrogen reacts with oxygen in the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322019267.2U CN220627861U (en) | 2023-07-31 | 2023-07-31 | Novel bipolar plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322019267.2U CN220627861U (en) | 2023-07-31 | 2023-07-31 | Novel bipolar plate structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220627861U true CN220627861U (en) | 2024-03-19 |
Family
ID=90224954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322019267.2U Active CN220627861U (en) | 2023-07-31 | 2023-07-31 | Novel bipolar plate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220627861U (en) |
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2023
- 2023-07-31 CN CN202322019267.2U patent/CN220627861U/en active Active
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