CN220209020U - Cathode-anode double-convection self-humidifying bipolar plate - Google Patents
Cathode-anode double-convection self-humidifying bipolar plate Download PDFInfo
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- CN220209020U CN220209020U CN202321744790.5U CN202321744790U CN220209020U CN 220209020 U CN220209020 U CN 220209020U CN 202321744790 U CN202321744790 U CN 202321744790U CN 220209020 U CN220209020 U CN 220209020U
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- hydrogen
- air inlet
- plate
- air
- anode
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 112
- 239000001257 hydrogen Substances 0.000 claims abstract description 112
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 112
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000446 fuel Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction 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
- 230000008569 process Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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 discloses a cathode-anode double-convection self-humidifying bipolar plate, which comprises a cathode plate and an anode plate correspondingly arranged on one surface of the cathode plate, wherein a plurality of air inlet grooves are respectively arranged at two ends of the surface of the cathode plate, a plurality of air flow channels are also arranged on the surface of the cathode plate, 2 air flow guide protrusions are respectively arranged in the air flow channels, each air flow channel is divided into 3 air flow grooves by the air flow guide protrusions, a plurality of hydrogen inlet grooves are respectively arranged at two ends of the surface of the anode plate, a plurality of hydrogen flow channels are also arranged on the surface of the anode plate, a first hydrogen flow guide groove and a second hydrogen flow guide groove are respectively arranged between the hydrogen flow channels and the hydrogen inlet grooves, and two hydrogen flow guide protrusions are respectively arranged in the hydrogen flow channels, so that each hydrogen flow channel is divided into 3 hydrogen flow grooves.
Description
Technical Field
The utility model belongs to the technical field of hydrogen fuel cells, and particularly relates to a cathode-anode double-convection self-humidifying bipolar plate.
Background
The hydrogen fuel cell stack is used as one of new energy products, the performance price ratio of the stack is particularly important for popularization of application markets, the cost of a fuel cell power generation system is more and more challenging, and a humidifier is mainly used for heating and humidifying air and hydrogen entering the stack, and is an indispensable important component in the hydrogen fuel cell.
However, in the prior art, the volume of the humidifier is large, so that the hydrogen fuel cell power generation system is complex, the manufacturing cost is relatively high, and if the bipolar plate can be self-humidified, the hydrogen fuel cell system can omit the setting of the humidifier, thereby reducing the manufacturing cost.
Disclosure of Invention
The utility model aims to provide a bipolar plate of a hydrogen fuel cell, which can be self-humidified.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a negative plate and positive plate pair convection current self-humidifying bipolar plate, includes the negative plate and is in the positive plate that negative plate one side corresponds the setting, the both ends of negative plate face are equipped with a plurality of air inlet grooves respectively, the air inlet grooves are parallel arrangement each other, still be equipped with a plurality of air flow channels on the face of negative plate, the air flow channel is parallel arrangement each other, be equipped with 2 air water conservancy diversion archs in the air flow channel respectively, the air water conservancy diversion arch divide into 3 air launders each air flow channel, the both ends of positive plate face are equipped with a plurality of hydrogen inlet grooves respectively, a plurality of hydrogen inlet grooves are parallel arrangement each other, still be equipped with a plurality of hydrogen flow channels on the positive plate face, a plurality of hydrogen flow channels are parallel arrangement each other, the hydrogen flow channel with be equipped with first hydrogen water conservancy diversion groove and second hydrogen water conservancy diversion groove each other between the hydrogen inlet grooves respectively, be equipped with two hydrogen water conservancy diversion archs in the hydrogen flow channel respectively, hydrogen water conservancy diversion arch divide each hydrogen flow channel into 3 hydrogen launders.
In a specific embodiment of the present utility model, the width of the air inlet grooves at both ends of the plurality of air inlet grooves is greater than the width of the air inlet grooves at the intermediate portion of the plurality of air inlet grooves.
In a specific embodiment of the present utility model, the width of the air inlet grooves at both ends of the plurality of hydrogen air inlet grooves is greater than the width of the air inlet grooves at the middle part of the plurality of hydrogen air inlet grooves.
In a specific embodiment of the utility model, a plurality of the air channels are positioned in the middle of the plate surface of the cathode plate.
In a specific embodiment of the present utility model, a plurality of the hydrogen flow channels are located in the middle of the anode plate surface.
In a specific embodiment of the present utility model, the plurality of hydrogen flow channels may be divided into an inner outflow layer and an anode surface outflow layer, wherein the inner outflow layer and the anode surface outflow layer respectively include 5 hydrogen flow channels, and the inner outflow layer and the anode surface outflow layer include the hydrogen flow channels that are disposed at intervals.
In a specific embodiment of the present utility model, the first diversion trench includes a first air inlet hole and a first hydrogen gas guiding trench communicating with the first air inlet hole.
In a specific embodiment of the present utility model, the second diversion trench includes a second air inlet hole and a second hydrogen gas guiding trench communicating with the second air inlet hole.
In a specific embodiment of the present utility model, the first air inlet hole and the second air inlet hole are respectively corresponding to an outermost air inlet slot of the plurality of hydrogen air inlet slots.
One of the above technical solutions of the present utility model has at least one of the following advantages or beneficial effects:
according to the utility model, the air inlet grooves and the hydrogen inlet grooves are respectively arranged at two ends of the bipolar plate, the air flow channels and the hydrogen flow channels are respectively arranged on the surface of the bipolar plate, the bulges are respectively arranged in the air flow channels and the hydrogen flow channels, so that the air flow channels and the hydrogen flow channels are divided into a plurality of gas flow channels, the air is divided into a plurality of flow channel groups after entering the air flow channels, the diversion grooves are respectively arranged between the hydrogen inlet grooves and the hydrogen flow channels of the anode plate, and the hydrogen is divided into a plurality of flow channel groups after entering the diversion grooves, so that the gas flow channels on the cathode plate and the anode plate can be ensured to form convection, the adjacent gas flow channels on the cathode plate are ensured to form convection, and the gas in the bipolar plate can be automatically humidified in the flowing process.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is an overall block diagram of a cathode plate according to one embodiment of the utility model;
figure 2 is an overall block diagram of an anode plate according to one embodiment of the utility model;
figure 3 is a block diagram of one end of an anode plate according to one embodiment of the utility model;
figure 4 is a block diagram of the other end of the anode plate of one embodiment of the utility model;
FIG. 5 is a cross-sectional view of a cathode plate according to one embodiment of the utility model;
figure 6 is a partial perspective view of one end of an anode plate of one embodiment of the utility model;
figure 7 is a partial perspective view of the other end of the anode plate of one embodiment of the utility model;
FIG. 8 is a partial perspective view of one end of a cathode plate according to one embodiment of the utility model;
FIG. 9 is a partial perspective view of the other end of the cathode plate according to one embodiment of the utility model.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience in describing the simplified description of the present utility model, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may explicitly or implicitly include one or more features.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the term "connected" should be construed broadly, and for example, it may be a fixed connection or an active connection, or it may be a detachable connection or a non-detachable connection, or it may be an integral connection; may be mechanically connected, may be electrically connected, or may be in communication with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements, indirect communication or interaction relationship between the two elements.
The following disclosure provides many different embodiments, or examples, for implementing different aspects of the utility model.
Referring to fig. 1 to 9, in an embodiment of the present utility model, a cathode-anode double-convection self-humidification bipolar plate includes a cathode plate 1 and an anode plate 2 correspondingly disposed at one side of the cathode plate 1, two ends of the plate surface of the cathode plate 1 are respectively provided with a plurality of air inlet grooves 3, the air inlet grooves 3 are disposed parallel to each other, the plate surface of the cathode plate 1 is further provided with a plurality of air flow channels 4, the air flow channels 4 are disposed parallel to each other, 2 air flow guiding protrusions 41 are respectively disposed in the air flow channels 4, the air flow channels 4 are divided into 3 air flow grooves 42, two ends of the plate surface of the anode plate 2 are respectively provided with a plurality of hydrogen inlet grooves 5, the hydrogen inlet grooves 5 are disposed parallel to each other, the plate surface of the anode plate 2 is further provided with a plurality of hydrogen flow channels 6, the hydrogen flow channels 6 are disposed parallel to each other, a first hydrogen flow guiding groove 7 and a second hydrogen flow guiding groove 8 are respectively disposed between the hydrogen flow channels 6 and the hydrogen inlet grooves 5, two hydrogen guiding protrusions 61 are respectively disposed in the hydrogen flow channels 6, and each hydrogen flow guiding protrusion 61 is divided into 3 hydrogen flow grooves 62.
In order to reduce the influence of the galvanic pile and the bipolar plate on the fluid and control the galvanic pile to be unlimited, the bipolar plate adopts a straight flow channel, so that a plurality of air inlet grooves 3 and a plurality of air flow channels 4, a plurality of hydrogen inlet grooves 5 and a plurality of hydrogen flow channels 6 are all arranged as parallel straight air inlet grooves; secondly, the cathode plate adopts a convection self-heating humidifying design, air enters the electric pile and is divided into 12 air inlets and 12 air outlets, wherein the air inlet grooves comprise No. 2 to No. 11 air inlets, the air outlets also comprise No. 2 to No. 11 air outlets, and each air flow channel 4 is divided into 3 air flow grooves 42 by 2 air guide bulges 41, so that each adjacent flow channel group is in a convection mode, the electric pile water management center along the way of each outlet flow channel group is in a state of water content and reaction heating, and the higher the outlet humidity and the higher the temperature are, so that the adjacent air inlet flow channel groups can receive the water and the temperature transferred by the electric pile water management center, and the purpose of humidifying is achieved.
In one embodiment of the utility model, the air inlet grooves 3 are respectively communicated with a plurality of air flow channels 4, the air flow channels 4 are positioned between the air inlet grooves 3 at two sides of the plate surface of the cathode plate 1, and the hydrogen flow channels 6 are positioned between the hydrogen inlet grooves 5 at two sides of the plate surface of the anode plate 2; at the other end of the hydrogen inlet groove 5, after entering, hydrogen is split into a plurality of flow channel groups on the anode surface of the bipolar plate, and finally flows out in a converging way on the anode surface, so that the corresponding flow channel grooves of the cathode and the anode are formed into a counter-flow design, one channel in the air inlet flow channel group is air inlet for the cathode, but the channel of the corresponding hydrogen flow channel group is air outlet flow channel group, thus the corresponding relationship between the hydrogen and the air forms counter-flow, and each air flow channel group and the hydrogen flow channel group are sequentially the same, thereby achieving the effect of forming the counter-flow between the cathode plate and the gas flow channel on the anode plate.
In one embodiment of the utility model, the plurality of air inlet grooves 3 are arranged in parallel, the plate surface of the cathode plate 1 is also provided with a plurality of air flow passages 4, the plurality of air flow passages 4 are straight air inlet grooves, the plurality of air flow passages 4 are arranged in parallel, two sides of the plate surface of the anode plate 2 are respectively provided with a plurality of hydrogen inlet grooves 5, the plurality of hydrogen inlet grooves 5 are arranged in parallel, the plate surface of the anode plate 2 is also provided with a plurality of hydrogen flow passages 6, the plurality of hydrogen flow passages 6 are straight air inlet grooves, the width of the air inlet grooves at two ends of the air inlet grooves 3 is larger than the width of the air inlet grooves at the middle part of the air inlet grooves 3, and the width of the air inlet grooves at two ends of the hydrogen inlet grooves 5 is larger than the width of the air inlet grooves at the middle part of the hydrogen inlet grooves 5.
The bipolar plate is used as a core component of the hydrogen fuel cell, plays a great number of important roles of supporting a membrane electrode structure, separating hydrogen and oxygen, collecting electrons, conducting heat, providing hydrogen and oxygen channels, discharging water generated by reaction, providing a cooling liquid channel and the like, so the performance of the bipolar plate depends on the flow field structure of the bipolar plate to a great extent, the inlets and outlets of the same reactant medium introduced into the electropile are arranged on two sides of the electropile, two inlets and outlets of the cathode plate are respectively provided with two inlets and outlets with widths larger than those of the middle part, cathode and anode channels of the electropile are respectively arranged as straight channels and are mutually parallel, the flow resistance of the bipolar plate channels can be effectively reduced, the design length of the electropile is widened, the cathode and anode channels are further divided into a plurality of channel areas, a plurality of cross convection channels are formed on the same surface, and convection channels are also formed on corresponding surfaces of the cathode and anode plates, so that the gas channels adjacent on the cathode plate and the anode plate form convection, and the adjacent gas channels on the anode plate form convection channels are further, and the balance of temperature, humidity and electricity generating effects among the channels can be facilitated.
In one embodiment of the present utility model, the hydrogen flow channels 6 on the anode plate 2 may be divided into an inner outflow layer and an anode surface outflow layer, where the inner outflow layer and the anode surface outflow layer respectively include 5 hydrogen flow channels 6, and the 10 hydrogen flow channels 6 are arranged at intervals, so that adjacent hydrogen flow channels 6 on the anode plate 2 may be arranged to be opposite convection, so that the water management effect of the electric pile may be effectively improved, and because the hydrogen flow channels 6 are arranged in convection, the fuel reaction uniformity may be improved, the hydrogen humidification device may be omitted from the fuel cell system, and the efficiency of the hydrogen supply system of the fuel cell system may be effectively improved, so that the overall fuel cell system is simplified, and the corresponding cost, space and weight of the system may be reduced.
In one embodiment of the present utility model, the first diversion trench 7 includes a first air inlet 71 and a first hydrogen guiding trench 72 connected to the first air inlet 71, the second diversion trench 8 includes a second air inlet 81 and a second hydrogen guiding trench 82 connected to the second air inlet 81, the first air inlet 71 and the second air inlet 81 are respectively corresponding to one end of the air inlet on the outermost side of the hydrogen air inlet 5, and this is because, after the hydrogen enters the first air inlet 71 and the second air inlet 81 through the first hydrogen guiding trench 72 and the second hydrogen guiding trench 82, the hydrogen will be split into a plurality of hydrogen channels on the anode panel, and finally is converged at one end of the bipolar plate and the anode plate, so that the convection arrangement between the adjacent hydrogen channels can be ensured, and the balance of temperature and humidity and electricity generating effects between the channels can be facilitated.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. The utility model provides a negative plate and positive plate pair flow pair humidification bipolar plate, its characterized in that includes negative plate (1) and is in positive plate (2) that negative plate (1) one side corresponds the setting, the both ends of negative plate (1) face are equipped with a plurality of air inlet tank (3) respectively, air inlet tank (3) are parallel arrangement each other, still be equipped with a plurality of air runner (4) on the face of negative plate (1), air runner (4) are parallel arrangement each other, be equipped with 2 air water conservancy diversion arch (41) respectively in air runner (4), air water conservancy diversion arch (41) will each air runner (4) divide into 3 air launders (42), the both ends of positive plate (2) face are equipped with a plurality of hydrogen inlet tank (5) respectively, a plurality of hydrogen inlet tank (5) are parallel arrangement each other, still be equipped with a plurality of hydrogen runner (6) on positive plate (2) face, a plurality of hydrogen runner (6) are parallel arrangement each other, hydrogen runner (6) and hydrogen runner (5) are equipped with first water conservancy diversion groove (7) respectively between the hydrogen runner (5) and second water conservancy diversion groove (8) respectively, hydrogen runner (61) are equipped with respectively, the hydrogen guide bulges (61) divide each hydrogen flow channel (6) into 3 hydrogen flow grooves (62).
2. The cathode-anode dual-convection self-humidifying bipolar plate according to claim 1, wherein: the width of the air inlet grooves at the two ends of the air inlet grooves (3) is larger than that of the air inlet grooves at the middle parts of the air inlet grooves (3).
3. The bipolar plate of claim 2, wherein: the width of the air inlet grooves at the two ends of the hydrogen air inlet grooves (5) is larger than that of the air inlet grooves at the middle parts of the hydrogen air inlet grooves (5).
4. The cathode-anode dual-convection self-humidifying bipolar plate according to claim 1, wherein: the air channels (4) are positioned in the middle of the plate surface of the cathode plate (1).
5. The bipolar plate of claim 4, wherein: the hydrogen flow channels (6) are positioned in the middle of the plate surface of the anode plate (2).
6. The cathode-anode dual-convection self-humidifying bipolar plate according to claim 5, wherein: the hydrogen flow channels (6) can be divided into an inner outflow layer and an anode surface outflow layer, the inner outflow layer and the anode surface outflow layer respectively comprise 5 hydrogen flow channels (6), and the inner outflow layer and the anode surface outflow layer comprise the hydrogen flow channels (6) which are arranged at intervals.
7. The cathode-anode dual-convection self-humidifying bipolar plate according to claim 1, wherein: the first hydrogen guide groove (7) comprises a first air inlet hole (71) and a first hydrogen guide groove (72) communicated with the first air inlet hole (71).
8. The bipolar plate of claim 7, wherein: the second hydrogen guide groove (8) comprises a second air inlet hole (81) and a second hydrogen guide groove (82) communicated with the second air inlet hole (81).
9. The cathode-anode dual-convection self-humidifying bipolar plate according to claim 8, wherein: the first air inlet holes (71) and the second air inlet holes (81) are respectively arranged corresponding to the outermost air inlet grooves in the plurality of hydrogen air inlet grooves (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321744790.5U CN220209020U (en) | 2023-07-05 | 2023-07-05 | Cathode-anode double-convection self-humidifying bipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321744790.5U CN220209020U (en) | 2023-07-05 | 2023-07-05 | Cathode-anode double-convection self-humidifying bipolar plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220209020U true CN220209020U (en) | 2023-12-19 |
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ID=89147425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321744790.5U Active CN220209020U (en) | 2023-07-05 | 2023-07-05 | Cathode-anode double-convection self-humidifying bipolar plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220209020U (en) |
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2023
- 2023-07-05 CN CN202321744790.5U patent/CN220209020U/en active Active
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