CN214753855U - Bipolar plate - Google Patents
Bipolar plate Download PDFInfo
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- CN214753855U CN214753855U CN202120632470.5U CN202120632470U CN214753855U CN 214753855 U CN214753855 U CN 214753855U CN 202120632470 U CN202120632470 U CN 202120632470U CN 214753855 U CN214753855 U CN 214753855U
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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
Abstract
The utility model relates to the technical field of fuel cells and discloses a bipolar plate, wherein an anode plate is provided with a first anode sealing groove and a second anode sealing groove, the first anode sealing groove is annularly arranged at the periphery of a fuel inlet and outlet, a coolant inlet and outlet and an oxidant inlet and outlet of the anode plate, and the second anode sealing groove is annularly arranged at the periphery of the anode plate; the negative plate is provided with a first cathode sealing groove and a second cathode sealing groove, the first cathode sealing groove is annularly arranged at the periphery of a fuel inlet and outlet, a coolant inlet and outlet and an oxidant inlet and outlet of the negative plate, the first cathode sealing groove and the first anode sealing groove are respectively arranged at intervals with the overlapped parts of the fuel channel, the first cathode sealing groove and the first anode sealing groove are respectively arranged at intervals with the overlapped parts of the oxidant channel, the first cathode sealing groove and the first anode sealing groove are respectively arranged at intervals with the overlapped parts of the coolant channel, and the second cathode sealing groove is annularly arranged at the periphery of the negative plate. The bipolar plate has high sealing efficiency and good sealing quality.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to a bipolar plate.
Background
The fuel cell is a chemical device for directly converting chemical energy of fuel into electric energy, is not limited by Carnot cycle effect, has high power generation efficiency, hardly generates pollutants and is environment-friendly, so the fuel cell has good application prospect.
The bipolar plate is one of the important components of the fuel cell, and is mainly used for separating fuel from an oxidant, uniformly introducing the fuel and the oxidant, collecting conduction current, supporting a membrane electrode, and realizing heat dissipation and water drainage of the fuel cell. The common bipolar plate consists of a cathode plate and an anode plate, wherein the cathode plate and the anode plate are respectively provided with a fuel inlet and a fuel outlet, an oxidant inlet and a coolant outlet, and the bipolar plate needs to be sealed in order to avoid gas leakage. In the prior art, a sealing groove is usually formed on each of the cathode plate and the anode plate, and a sealing gasket is disposed in each sealing groove to realize the overall sealing of the bipolar plate and to ensure the sealing isolation among the fuel inlet/outlet, the oxidant inlet/outlet, and the coolant inlet/outlet. However, because the fuel channel, the oxidant channel and the coolant channel are arranged between the cathode plate and the anode plate, in order to ensure the smoothness of the fuel channel, the oxidant channel and the coolant, the overlapping part of the cathode plate sealing groove and the fuel channel and the overlapping part of the anode plate sealing groove and the fuel channel need to be arranged at intervals, the overlapping part of the cathode plate sealing groove and the oxidant channel and the overlapping part of the anode plate sealing groove and the oxidant channel need to be arranged at intervals, the overlapping part of the cathode plate sealing groove and the coolant channel and the overlapping part of the anode plate sealing groove and the coolant channel need to be arranged at intervals, so that the sealing pressure which can be borne by the corresponding parts of the cathode plate sealing groove and the anode plate sealing groove is limited, the sealing gasket can only be arranged by adopting the integral manual paving mode, because the covering area of the sealing gasket is large, the section size is small, the positioning of the sealing gasket is difficult and the paving efficiency is low, the bipolar plate has low sealing efficiency and poor sealing quality, thereby influencing the processing efficiency and the processing quality of the bipolar plate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bipolar plate, its sealed efficient and sealed of high quality.
Therefore, the utility model adopts the following technical scheme:
a bipolar plate comprises an anode plate and a cathode plate which are connected, wherein the anode plate and the cathode plate respectively comprise a fuel inlet and a fuel outlet, a coolant inlet and a coolant outlet, an oxidant inlet and a oxidant outlet and a flow field, a fuel channel, an oxidant channel and a coolant channel are formed between the anode plate and the cathode plate in a surrounding manner, the fuel inlet and the fuel outlet of the anode plate and the fuel outlet of the cathode plate are respectively communicated with the flow field of the anode plate through the fuel channel, the oxidant inlet and the oxidant outlet of the anode plate and the oxidant outlet of the cathode plate are respectively communicated with the flow field of the cathode plate through the oxidant channel, and the coolant inlet and the coolant outlet of the anode plate and the coolant outlet of the cathode plate are respectively communicated with the coolant channel;
the anode plate is also provided with a first anode sealing groove and a second anode sealing groove, the first anode sealing groove is respectively arranged at the periphery of the fuel inlet and the fuel outlet, the periphery of the coolant inlet and the coolant outlet and the periphery of the oxidant inlet and the oxidant outlet of the anode plate in a surrounding manner, a first anode sealing gasket is arranged in the first anode sealing groove, the second anode sealing groove is arranged at the periphery of the anode plate in a surrounding manner, and a second anode sealing gasket is arranged in the second anode sealing groove;
the cathode plate is further provided with a first cathode sealing groove and a second cathode sealing groove, the first cathode sealing groove is respectively arranged at the periphery of the fuel inlet and outlet, the periphery of the coolant inlet and outlet and the periphery of the oxidant inlet and outlet of the cathode plate in a surrounding manner, the parts of the first cathode sealing groove and the first anode sealing groove, which are respectively overlapped with the fuel channel, are arranged at intervals along the length direction of the bipolar plate, the parts of the first cathode sealing groove and the first anode sealing groove, which are respectively overlapped with the oxidant channel, are arranged at intervals along the length direction of the bipolar plate, the first cathode sealing groove and the first anode sealing groove, which are respectively overlapped with the coolant channel, are arranged at intervals along the length direction of the bipolar plate, a first cathode sealing gasket is arranged in the first cathode sealing groove, and the second cathode sealing groove is arranged at the periphery of the cathode plate in a surrounding manner, and a second cathode sealing gasket is arranged in the second cathode sealing groove.
As a preferable aspect of the bipolar plate, the second anode gasket and the second cathode gasket are formed by an injection molding process.
As a preferred scheme of the bipolar plate, the anode plate is further provided with an anode glue injection port, and the anode glue injection port is communicated with the second anode sealing groove; and/or
And the cathode plate is also provided with a cathode glue injection port, and the cathode glue injection port is communicated with the second cathode sealing groove.
Preferably, the second anode gasket and the second cathode gasket are integrally formed as a bipolar plate.
Preferably, the first anode sealing gasket is attached to the first anode sealing groove, and the first cathode sealing gasket is attached to the first cathode sealing groove.
As a preferable aspect of the bipolar plate, a fuel inlet and outlet region is formed at a portion of the bipolar plate corresponding to the fuel inlet and outlet of the fuel channel and the anode plate, and an oxidant inlet and outlet region is formed at a portion of the bipolar plate corresponding to the oxidant inlet and outlet of the oxidant channel and the anode plate, the bipolar plate further comprising:
the first welding part is annularly arranged on the periphery of the bipolar plate;
and the second welding part is respectively arranged at the periphery of the fuel inlet and outlet area and the periphery of the oxidant inlet and outlet area in a surrounding manner.
As a preferable aspect of the bipolar plate, the first weld and the second weld are formed by a laser welding process.
Preferably, the first weld coincides with the second anode seal groove and/or the second cathode seal groove.
As a preferable scheme of the bipolar plate, the anode plate and the cathode plate are both formed by adopting a stamping process.
As a preferable embodiment of the bipolar plate, the first anode gasket, the second anode gasket, the first cathode gasket, and the second cathode gasket are made of silicone.
The utility model has the advantages that:
the utility model provides a bipolar plate, including anode plate and negative plate, the anode plate is equipped with independent first anode seal groove and second anode seal groove, the negative plate is equipped with independent first cathode seal groove and second cathode seal groove, import and export with the fuel in order to realize bipolar plate's whole sealed, the coolant is imported and exported and the sealed isolation between the oxidant is imported and exported, make the sealed pad of first anode and the sealed pad of second anode can adopt different modes of setting, the sealed pad of first cathode and the sealed pad of second cathode can adopt different modes of setting, can also guarantee bipolar plate's sealed quality when improving bipolar plate seal efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an anode plate according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a cathode plate provided in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a first anode gasket provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first cathode gasket according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a second anode gasket provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second cathode gasket according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a bipolar plate according to an embodiment of the present invention.
In the figure:
1-an anode plate;
11-a first anode seal groove; 12-a second anode seal groove; 13-a first anode gasket; 14-a fuel port; 15-anode fuel cell; 16-anodic oxidant tank; 17-a second anode gasket;
2-a cathode plate;
21-first cathode seal groove; 22-second cathode seal groove; 23-a first cathode gasket; 24-an oxidant port; 25-a second cathode gasket;
31-fuel inlet and outlet; 32-coolant inlet and outlet; 33-oxidant inlet and outlet; 34-a flow field; 35-raised structures; 36-avoidance groove;
100-a bipolar plate;
101-a fuel channel; 102-an oxidant channel; 103-coolant channels; 104 — a first weld; 105-second weld.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-7, the present embodiment provides a bipolar plate 100, the bipolar plate 100 includes an anode plate 1 and a cathode plate 2 connected to each other, each of the anode plate 1 and the cathode plate 2 includes a fuel inlet/outlet 31, a coolant inlet/outlet 32, an oxidant inlet/outlet 33, and a flow field 34, a fuel channel 101, an oxidant channel 102, and a coolant channel 103 are defined between the anode plate 1 and the cathode plate 2, the fuel inlet/outlet 31 of the anode plate 1 and the fuel inlet/outlet 31 of the cathode plate 2 are both communicated with the flow field 34 of the anode plate 1 through the fuel channel 101, the oxidant inlet/outlet 33 of the anode plate 1 and the oxidant inlet/outlet 33 of the cathode plate 2 are both communicated with the flow field 34 of the cathode plate 2 through the oxidant channel 102, and the coolant inlets/outlets 32 of the anode plate 1 and the cathode plate 2 are both communicated with the coolant channel 103. Wherein, a cooling cavity is further enclosed between the cathode plate 2 and the anode plate 1, and a coolant enters the cooling cavity from a coolant inlet/outlet 32 through a coolant channel 103 to cool the bipolar plate 100; the fuel flows into the flow field 34 of the anode plate 1 from the fuel inlet and outlet 31 through the fuel channel 101 to perform an anode reaction, and the oxidant flows into the flow field 34 of the cathode plate 2 from the oxidant inlet and outlet 33 through the oxidant channel 102 to perform a cathode reaction.
In the present embodiment, the fuel is specifically hydrogen, the oxidant is specifically air, and the coolant is specifically water. Of course, the kinds of the fuel, the oxidant, and the coolant are not limited thereto, and may be set according to actual needs.
It can be understood that the flow field 34 of the anode plate 1 is located on one side of the anode plate 1 away from the cooling cavity, the flow field 34 of the cathode plate 2 is located on one side of the cathode plate 2 away from the cooling cavity, the flow field 34 of the anode plate 1 and the flow field 34 of the cathode plate 2 are overlapped, so that mutual support can be formed, a flow channel of the cooling cavity can be formed between the anode plate 1 and the cathode plate 2, and coolant flows in the flow channel of the cooling cavity to cool the bipolar plate 100, so that the cooling effect is good.
Specifically, as shown in fig. 1, 3 and 5, the anode plate 1 is further provided with a first anode sealing groove 11 and a second anode sealing groove 12, the first anode sealing groove 11 is respectively and annularly provided on the outer periphery of the fuel inlet/outlet 31, the outer periphery of the coolant inlet/outlet 32 and the outer periphery of the oxidant inlet/outlet 33 of the anode plate 1, and a first anode sealing gasket 13 is provided in the first anode sealing groove 11 to realize the sealing and isolation of the fuel inlet/outlet 31, the coolant inlet/outlet 32 and the oxidant inlet/outlet 33 of the anode plate 1; a second anode sealing groove 12 is annularly arranged on the periphery of the anode plate 1, and a second anode sealing gasket 17 is arranged in the second anode sealing groove 12 and is used for being matched with a corresponding membrane electrode to form a sealed anode reaction cavity; as shown in fig. 2, 4 and 6, the cathode plate 2 is provided with a first cathode sealing groove 21 and a second cathode sealing groove 22, the first cathode sealing groove 21 is respectively arranged around the periphery of the fuel inlet/outlet 31, the periphery of the coolant inlet/outlet 32 and the periphery of the oxidant inlet/outlet 33 of the cathode plate 2, and the overlapping portion of the first cathode sealing groove 21 and the fuel channel 101 and the overlapping portion of the first anode sealing groove 11 and the fuel channel 101 are arranged at intervals along the length direction of the bipolar plate 100 to ensure the smoothness of the fuel channel 101; similarly, the portion of the first cathode seal groove 21 coinciding with the oxidant channel 102 and the portion of the first anode seal groove 11 coinciding with the oxidant channel 102 are spaced apart along the length of the bipolar plate 100 to ensure the smoothness of the oxidant channel 102; the part of the first cathode sealing groove 21, which is overlapped with the coolant channel 103, and the part of the first anode sealing groove 11, which is overlapped with the coolant channel 103, are arranged at intervals along the length direction of the bipolar plate 100 so as to ensure the smoothness of the coolant channel 103; a first cathode sealing gasket 23 is arranged in the first cathode sealing groove 21 to realize the sealing and isolation of a fuel inlet/outlet 31, a coolant inlet/outlet 32 and an oxidant inlet/outlet 33 of the cathode plate 2, a second cathode sealing groove 22 is annularly arranged on the periphery of the cathode plate 2, and a second cathode sealing gasket 25 is arranged in the second cathode sealing groove 22 and is used for being matched with a corresponding membrane electrode to form a sealed cathode reaction cavity. Because the first anode sealing groove 11 and the second anode sealing groove 12 are independently arranged, and the first cathode sealing groove 21 and the second cathode sealing groove 22 are independently arranged, the first anode sealing gasket 13 and the second anode sealing gasket 17 can adopt different arrangement modes, and the first cathode sealing gasket 23 and the second cathode sealing gasket 25 can adopt different arrangement modes, so that the sealing efficiency and the sealing quality of the bipolar plate 100 are improved; in addition, a double sealing effect can be achieved, and the sealing quality of the bipolar plate 100 can be further improved.
Further, the second anode gasket 17 and the second cathode gasket 25 are both formed by an injection molding process, which can ensure the manufacturing accuracy of the second anode gasket 17 and the second cathode gasket 25, thereby ensuring the sealing effect of the bipolar plate 100. Specifically, the second anode sealing gasket 17 is directly injection-molded in the second anode sealing groove 12, so that the problems of difficulty in paving and positioning and low paving efficiency caused by too large difference between the coverage area and the section size of the second anode sealing gasket 17 can be solved, and the sealing efficiency is high and the sealing quality is good. Similarly, a second cathode gasket 25 is injection molded directly into the second cathode seal groove 22. Of course, the arrangement of the second anode gasket 17 and the second cathode gasket 25 is not limited thereto, and in other embodiments, the second anode gasket 17 and the second cathode gasket 25 may also adopt different arrangement modes, and may be arranged according to actual needs, which is not limited in this embodiment.
Optionally, the anode plate 1 is further provided with an anode glue injection port, the anode glue injection port is communicated with the second anode sealing groove 12, the external glue injection device injects liquid silica gel into the second anode sealing groove 12 through the anode glue injection port, and the liquid silica gel is cured under the heat preservation and pressure maintaining effects of the mold to form the second anode sealing gasket 17. Further, the quantity of anode injecting glue mouth is a plurality of, and the periphery of second anode seal groove 12 is located to a plurality of anode injecting glue mouth interval rings to improve the shaping quality of second anode sealing gasket 17. Similarly, the cathode plate 2 is provided with a cathode glue injection port, the cathode glue injection port is communicated with the second cathode sealing groove 22, and the external glue injection device injects liquid silica gel into the second cathode sealing groove 22 through the cathode glue injection port to form a second cathode sealing gasket 25; the number of the cathode glue injection openings can also be multiple, and the multiple cathode glue injection openings are arranged at the periphery of the second cathode sealing groove 22 in a spaced ring mode so as to improve the forming quality of the second cathode sealing gasket 25.
Preferably, the second anode gasket 17 and the second cathode gasket 25 are integrally formed, which can improve the processing efficiency of the bipolar plate 100.
For example, the bottom of the second anode sealing groove 12 is communicated with the bottom of the second cathode sealing groove 22, so that liquid silicone can flow from one of the second anode sealing groove 12 and the second cathode sealing groove 22 into the other, thereby simultaneously molding the second anode gasket 17 and the second cathode gasket 25, and ensuring the molding quality of the second anode gasket 17 and the second cathode gasket 25.
Because the fuel channel 101 is arranged below part of the first anode sealing groove 11, the sealing pressure which can be borne by the fuel channel 101 is limited, and the first anode sealing gasket 13 cannot be directly formed in the first anode sealing groove 11 through injection molding process forming. Similarly, the first cathode gasket 23 is adhered to the first cathode sealing groove 21, so that the fuel inlet/outlet 31, the coolant inlet/outlet 32 and the oxidant inlet/outlet 33 of the cathode plate 2 can be sealed and isolated.
Preferably, the first anode gasket 13 and the first cathode gasket 23 are formed by injection molding, so that the forming precision is high and the sealing quality of the bipolar plate 100 can be ensured.
In this embodiment, the first anode sealing gasket 13, the second anode sealing gasket 17, the first cathode sealing gasket 23 and the second cathode sealing gasket 25 are made of silica gel, which is oxidation-resistant and has a good sealing effect.
In the present embodiment, the portions of the bipolar plate 100 corresponding to the fuel channels 101 and the fuel inlet/outlet 31 of the anode plate 1 form fuel inlet/outlet regions, and the portions of the bipolar plate 100 corresponding to the oxidant channels 102 and the oxidant inlet/outlet 33 of the anode plate 1 form oxidant inlet/outlet regions. Specifically, a fuel port 14 is further arranged at a position of the anode plate 1 corresponding to the fuel channel 101, and the fuel channel 101 is communicated with the flow field 34 of the anode plate 1 through the fuel port 14; similarly, the cathode plate 2 is further provided with an oxidant port 24 corresponding to the oxidant channel 102, and the oxidant channel 102 is communicated with the flow field 34 of the cathode plate 2 through the oxidant port 24.
Further, the anode plate 1 is provided with a plurality of anode fuel grooves 15 spaced apart in the width direction of the bipolar plate 100 to form a plurality of first flow channels at corresponding positions in the fuel channel 101, thereby allowing the fuel to flow uniformly in the fuel channel 101. Similarly, the cathode plate 2 may also be provided with a plurality of cathode fuel grooves spaced apart in the width direction of the bipolar plate 100 to form a plurality of second flow channels at corresponding positions in the fuel channel 101. In this embodiment, the first flow channels and the second flow channels are arranged opposite to each other. Of course, in other embodiments, the first flow channels may also be disposed in a staggered manner with the second flow channels, and the width of the first flow channels may be different from that of the second flow channels, and may be set according to actual needs.
Similarly, the anode plate 1 may be further provided with a plurality of anode oxidant slots 16 spaced apart in the width direction of the bipolar plate 100, and the cathode plate 2 may be further provided with a plurality of cathode oxidant slots spaced apart in the width direction of the bipolar plate 100, so that the oxidant flows uniformly in the oxidant channels 102; the anode plate 1 may be further provided with a plurality of anode coolant grooves spaced apart in the width direction of the bipolar plate 100, and the cathode plate 2 may be further provided with a plurality of cathode coolant grooves spaced apart in the width direction of the bipolar plate 100, so that the coolant flows uniformly in the coolant channels 103.
Optionally, in order to achieve the connection of the anode plate 1 and the cathode plate 2 and form a sealed cooling chamber, a fuel inlet/outlet area and an oxidant inlet/outlet area, the bipolar plate 100 further includes a first welding portion 104 and a second welding portion 105, the first welding portion 104 is disposed around the outer circumference of the bipolar plate 100, and the second welding portion 105 is disposed around the outer circumference of the fuel inlet/outlet area and the outer circumference of the oxidant inlet/outlet area, respectively.
Illustratively, first weld 104 and second weld 105 are both formed by a laser welding process.
As shown in fig. 7, in the present embodiment, the cathode plate 2 and the anode plate 1 are both provided with a plurality of protrusion structures 35, a plurality of adjacent protrusion structures 35 on the anode plate 1 are surrounded to form a first anode sealing groove 11 and a second anode sealing groove 12, and a plurality of adjacent protrusion structures 35 on the cathode plate 2 are surrounded to form a first cathode sealing groove 21 and a second cathode sealing groove 22.
Further, in order to ensure the welding quality of the bipolar plate 100, an avoidance groove 36 is provided at the intersection of the protrusion 35 and the first weld 104 or the second weld 105.
Illustratively, the width of the relief groove 36 is 0.5mm to 1mm, preferably 0.5 mm.
It is understood that the widths of the plurality of avoiding grooves 36 may be the same or different, and may be set according to actual needs.
In the present embodiment, the first weld 104 overlaps the second anode seal groove 12 and/or the second cathode seal groove 22, enabling the bipolar plate 100 to be compact. Of course, the arrangement of the first welding portion 104 is not limited to this, and may be set according to actual machining needs, which is not limited by the present embodiment.
Optionally, the anode plate 1 and the cathode plate 2 are both formed by adopting a stamping process, so that the processing efficiency and the processing precision are high.
Illustratively, the bipolar plate 100 is manufactured as follows: firstly, a cathode plate 2 and an anode plate 1 are formed through a stamping process, and structures such as a fuel inlet and outlet 31, an oxidant inlet and outlet 33, a coolant inlet and outlet 32 and a flow field 34 of the cathode plate 2 and the anode plate 1, a first anode sealing groove 11 and a second anode sealing groove 12 of the anode plate 1, a first cathode sealing groove 21 and a second cathode sealing groove 22 of the cathode plate 2 and the like are formed; then the cathode plate 2 and the anode plate 1 are oppositely arranged, and a first welding part 104 and a second welding part 105 are formed through a laser welding process so as to form a sealed cooling cavity, a fuel inlet and outlet area and a coolant inlet and outlet area; then, a second anode sealing gasket 17 is formed in the second anode sealing groove 12 through an injection molding process, a second cathode sealing gasket 25 is formed in the second cathode sealing groove 22, and finally, a first anode sealing gasket 13 and a first cathode sealing gasket 23 are respectively formed through the injection molding process and are sequentially attached into the first anode sealing groove 11 and the first cathode sealing groove 21.
In the description of the present specification, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present embodiment and simplifying the description, but do not indicate or imply that the device or structure referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. The bipolar plate comprises an anode plate (1) and a cathode plate (2) which are connected, wherein the anode plate (1) and the cathode plate (2) respectively comprise a fuel inlet and outlet (31), a coolant inlet and outlet (32), an oxidant inlet and outlet (33) and a flow field (34), the anode plate (1) and the cathode plate (2) are surrounded to form a fuel channel (101), an oxidant channel (102) and a coolant channel (103), the fuel inlet and outlet (31) of the anode plate (1) and the fuel inlet and outlet (2) of the cathode plate (2) are respectively communicated with the flow field (34) of the anode plate (1) through the fuel channel (101), the oxidant inlet and outlet (33) of the anode plate (1) and the oxidant inlet and outlet (33) of the cathode plate (2) are respectively communicated with the flow field (34) of the cathode plate (2) through the oxidant channel (102), and the coolant inlet and outlet (32) of the anode plate (1) and the coolant inlet and outlet (32) of the cathode plate (2) are respectively communicated with the flow field (103) The coolant passages (103) being in communication, characterized in that:
the anode plate (1) is further provided with a first anode sealing groove (11) and a second anode sealing groove (12), the first anode sealing groove (11) is respectively arranged on the periphery of the fuel inlet and outlet (31), the periphery of the coolant inlet and outlet (32) and the periphery of the oxidant inlet and outlet (33) of the anode plate (1) in a surrounding manner, a first anode sealing gasket (13) is arranged in the first anode sealing groove (11), the second anode sealing groove (12) is arranged on the periphery of the anode plate (1) in a surrounding manner, and a second anode sealing gasket (17) is arranged in the second anode sealing groove (12);
the cathode plate (2) is further provided with a first cathode sealing groove (21) and a second cathode sealing groove (22), the first cathode sealing groove (21) is respectively arranged at the periphery of the fuel inlet and outlet (31), the periphery of the coolant inlet and outlet (32) and the periphery of the oxidant inlet and outlet (33) of the cathode plate (2) in a surrounding manner, the parts of the first cathode sealing groove (21) and the first anode sealing groove (11) which are respectively overlapped with the fuel channel (101) are arranged at intervals along the length direction of the bipolar plate, the parts of the first cathode sealing groove (21) and the first anode sealing groove (11) which are respectively overlapped with the oxidant channel (102) are arranged at intervals along the length direction of the bipolar plate, and the parts of the first cathode sealing groove (21) and the first anode sealing groove (11) which are respectively overlapped with the coolant channel (103) are arranged at intervals along the length direction of the bipolar plate, be equipped with first cathode sealing pad (23) in first cathode seal groove (21), second cathode seal groove (22) ring is located the periphery of negative plate (2), be equipped with second cathode sealing pad (25) in second cathode seal groove (22).
2. A bipolar plate according to claim 1, characterised in that the second anode gasket (17) and the second cathode gasket (25) are both formed by an injection moulding process.
3. The bipolar plate of claim 2, wherein the anode plate (1) is further provided with an anode glue injection port, and the anode glue injection port is communicated with the second anode sealing groove (12); and/or
And the cathode plate (2) is also provided with a cathode glue injection port, and the cathode glue injection port is communicated with the second cathode sealing groove (22).
4. A bipolar plate according to claim 2, characterised in that the second anode seal (17) and the second cathode seal (25) are formed in one piece.
5. A bipolar plate according to claim 1, wherein the first anode sealing gasket (13) is glued in the first anode sealing groove (11) and the first cathode sealing gasket (23) is glued in the first cathode sealing groove (21).
6. A bipolar plate according to claim 1, wherein the portions of the bipolar plate corresponding to the fuel inlet and outlet (31) of the fuel channel (101) and the anode plate (1) form a fuel inlet and outlet area, and the portions of the bipolar plate corresponding to the oxidant inlet and outlet (33) of the oxidant channel (102) and the anode plate (1) form an oxidant inlet and outlet area, the bipolar plate further comprising:
a first welding part (104) which is arranged around the periphery of the bipolar plate;
and a second welding part (105) which is respectively arranged on the periphery of the fuel inlet and outlet area and the periphery of the oxidant inlet and outlet area in a surrounding mode.
7. A bipolar plate as claimed in claim 6, wherein the first weld (104) and the second weld (105) are formed by a laser welding process.
8. A bipolar plate according to claim 6, wherein the first weld (104) coincides with the second anode seal groove (12) and/or second cathode seal groove (22).
9. A bipolar plate according to claim 1, wherein the anode plate (1) and the cathode plate (2) are formed by a stamping process.
10. A bipolar plate according to claim 1, characterised in that the first anode seal (13), the second anode seal (17), the first cathode seal (23) and the second cathode seal (25) are made of silicone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120632470.5U CN214753855U (en) | 2021-03-29 | 2021-03-29 | Bipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120632470.5U CN214753855U (en) | 2021-03-29 | 2021-03-29 | Bipolar plate |
Publications (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447357A (en) * | 2022-01-17 | 2022-05-06 | 国家电投集团氢能科技发展有限公司 | Metal bipolar plate and metal bipolar plate sealing structure forming method |
| CN114864982A (en) * | 2022-05-24 | 2022-08-05 | 上海骥翀氢能科技有限公司 | Stamped metal bipolar plate and fuel cell |
| CN115084570A (en) * | 2022-08-11 | 2022-09-20 | 北京开元新能科技有限公司 | Glue injection structure for bipolar plate and glue injection sealed bipolar plate |
| CN115939441A (en) * | 2022-12-29 | 2023-04-07 | 上海骥翀氢能科技有限公司 | Bipolar plate and fuel cell |
| CN114447357B (en) * | 2022-01-17 | 2024-04-30 | 国家电投集团氢能科技发展有限公司 | Forming method of metal bipolar plate and metal bipolar plate sealing structure |
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2021
- 2021-03-29 CN CN202120632470.5U patent/CN214753855U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447357A (en) * | 2022-01-17 | 2022-05-06 | 国家电投集团氢能科技发展有限公司 | Metal bipolar plate and metal bipolar plate sealing structure forming method |
| CN114447357B (en) * | 2022-01-17 | 2024-04-30 | 国家电投集团氢能科技发展有限公司 | Forming method of metal bipolar plate and metal bipolar plate sealing structure |
| CN114864982A (en) * | 2022-05-24 | 2022-08-05 | 上海骥翀氢能科技有限公司 | Stamped metal bipolar plate and fuel cell |
| CN115084570A (en) * | 2022-08-11 | 2022-09-20 | 北京开元新能科技有限公司 | Glue injection structure for bipolar plate and glue injection sealed bipolar plate |
| CN115939441A (en) * | 2022-12-29 | 2023-04-07 | 上海骥翀氢能科技有限公司 | Bipolar plate and fuel cell |
| CN115939441B (en) * | 2022-12-29 | 2023-12-29 | 上海骥翀氢能科技有限公司 | Bipolar plate and fuel cell |
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