CN217444439U - Bipolar plate sealing device and battery - Google Patents
Bipolar plate sealing device and battery Download PDFInfo
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- CN217444439U CN217444439U CN202220927745.2U CN202220927745U CN217444439U CN 217444439 U CN217444439 U CN 217444439U CN 202220927745 U CN202220927745 U CN 202220927745U CN 217444439 U CN217444439 U CN 217444439U
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Abstract
The utility model relates to a bipolar plate technical field discloses a bipolar plate sealing device and battery, include: negative plate, anode plate, MEA frame and two sets of sealed pads, the negative plate respectively be provided with a set of sealed pad on the anode plate, it is two sets of sealed pad sets up relatively, the MEA frame sets up between two sets of sealed pads, and is two sets of be provided with the concave-convex structure of mutually supporting on the sealed opposite face of filling up, it is two sets of sealed pad is kept away from and is provided with wave structure in concave-convex structure's the one side, and is two sets of sealed pad pass through wave structure respectively with the negative plate the anode plate is connected. The utility model effectively solves the problems of glue overflow, waste or overflow of bipolar plates caused by uneven gluing during the installation process of the sealing gasket through the wave structure; meanwhile, the concave-convex structure is adopted to solve the problem that the sealing gasket is dislocated in the process of butting and compressing the bipolar plate and the membrane electrode of the fuel cell stack, and the sealing effect of the sealing gasket is provided.
Description
Technical Field
The utility model relates to a bipolar plate technical field, in particular to bipolar plate sealing device and battery.
Background
As fuel cell technology has developed, it is becoming more and more popular in the market, and sealing technology is very critical in order to ensure that the fuel and oxidant in the fuel cell can be distributed over the entire membrane electrode surfaces without mixing with each other. The fuel cell bipolar plate is also called collector plate, and is one of the important components of fuel cell. The fuel and the oxidant are separated, and the gas can be uniformly distributed to the reaction layer of the electrode to perform electrode reaction.
The existing bipolar plate sealing device usually adopts two sealing rings with oval structures or T-shaped structures to seal the bipolar plate and a membrane electrode, the structural form is single, the sealing ring structures of a cathode and an anode have no related structural constraints, and are limited by manufacturing and assembling tolerance, so that the sealing surface of the sealing ring is staggered, the sealing effect is reduced to a certain extent, and leakage in different degrees is generated.
If the fuel cell seal fails, adverse consequences may occur, such as leakage of part of the fuel gas to the outside, resulting in fuel waste and reduced efficiency of the fuel cell; and when the fuel gas concentration is accumulated to a certain degree, there is a risk of explosion.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem of fuel cell gas leakage, the utility model provides a prevent that gas leakage, bipolar plate sealing device and battery of sealed face dislocation problem that leads to because of the assembly precision.
The technical content of the utility model is as follows:
a bipolar plate seal, comprising: the negative plate is provided with a group of sealing gaskets on the positive plate, the sealing gaskets are arranged oppositely, the MEA frame is arranged between the two groups of sealing gaskets, and the opposite surfaces of the sealing gaskets are provided with concave-convex structures matched with each other.
Furthermore, wave structures are arranged on one surfaces, away from the concave-convex structures, of the two groups of sealing gaskets, and the two groups of sealing gaskets are respectively connected with the negative plate and the positive plate through the wave structures.
Further, the height difference between the wave crest and the wave trough on the wave structure is less than or equal to 0.2 mm.
Further, a first groove for accommodating the wave structure is formed in the cathode plate and used for sealing the device.
Furthermore, a second groove for accommodating a wave structure is formed in the anode plate and used for sealing a device gasket.
Furthermore, the sealing gasket on the cathode plate is a cathode sealing gasket, and the sealing gasket on the anode plate is an anode sealing gasket.
The utility model also provides a fuel cell, including the galvanic pile, the galvanic pile includes foretell bipolar plate sealing device.
The bipolar plate sealing device provided by the utility model effectively solves the problem that glue overflows due to uneven gluing during the installation process of the sealing gasket, thereby causing waste or overflow of the bipolar plate through the wave structure; meanwhile, the concave-convex structure is adopted to solve the problem that the sealing gasket is dislocated in the process of butting and compressing the bipolar plate and the membrane electrode of the fuel cell stack, and the sealing effect of the sealing gasket is provided.
Drawings
Fig. 1 is a schematic structural diagram of a bipolar plate sealing device of the present invention.
Wherein:
1-a cathode plate;
2-an anode plate;
3-MEA frame;
4-a sealing gasket;
401 — cathode gasket; 402-anode gasket;
5-a wave structure;
6-a first groove;
7-second groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the present invention provides a bipolar plate sealing device, including: negative plate 1, anode plate 2, MEA frame 3 and two sets of sealed 4 of filling up, negative plate 1 respectively be provided with a set of sealed 4, two sets of on the anode plate 2 sealed 4 sets up relatively sealed 4, MEA frame 3 sets up between two sets of sealed 4, and is two sets of be provided with the concave-convex structure of mutually supporting on the relative face of sealed 4.
Furthermore, two sets of sealing gasket 4 is provided with wave structure 5 on keeping away from concave-convex structure's one side, two sets of sealing gasket 4 through wave structure 5 respectively with negative plate 1 the anode plate 2 is connected. The sealed 4 that fills up on negative plate 1 and the anode plate 2 mutually supports through concave-convex structure and seals, compress tightly the in-process after the pile up, the sealed 4 that fills up on negative plate 1 and the anode plate 2 mutually supports through concave-convex structure in order to correct the dislocation that leads to in the placement process, make the better laminating of sealed face be in the same place, sealed 4 and membrane electrode frame on negative plate 1 and the anode plate 2, the sealed line length that MEA frame 3 formed is unanimous basically, better assurance sealed 4's sealed effect.
Further, the height difference between the wave crest and the wave trough on the wave structure 5 is less than or equal to 0.2 mm.
Further, the cathode plate 1 is provided with a first groove 6 for accommodating the wave structure 5 for mounting the gasket 4.
Further, a second groove 7 for accommodating the wave structure is arranged on the anode plate 2 and used for the device sealing gasket 4.
Further, the sealing gasket 4 on the cathode plate 1 is a cathode sealing gasket 401, and the sealing gasket 4 on the anode plate 2 is an anode sealing gasket 402.
The utility model also provides a fuel cell, including the galvanic pile, the galvanic pile includes foretell bipolar plate sealing device.
Before the galvanic pile assembly, need to seal up and install sealed on bipolar plate in advance, adopt glue bonding process on the corresponding polar plate is installed to general negative and positive pole rubber pad, glue daubs the back and has certain inhomogeneous, and the rubber coating too few can lead to sealed the laminating not good, and too many can lead to glue to spill over, causes the waste and the partial phenomenon such as do not handle well that spills over.
The utility model discloses a solve above-mentioned problem, through design wavy structure in the one side of sealed pad with bipolar plate laminating, can reduce the inhomogeneous problem of bringing of rubber coating to a certain extent, the crest on the wavy structure is no longer than 0.2mm with the difference in height of trough, can not influence the laminating effect of sealed pad, also can not exert an influence to rubber pad structural strength.
The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.
Claims (6)
1. A bipolar plate seal assembly, comprising: the method comprises the following steps: negative plate, anode plate, MEA frame and two sets of sealed pads, the negative plate respectively be provided with a set of sealed pad on the anode plate, it is two sets of sealed pad sets up relatively, the MEA frame sets up between two sets of sealed pads, and is two sets of be provided with the concave-convex structure of mutually supporting on the sealed opposite face of filling up, it is two sets of sealed pad is kept away from and is provided with wave structure in concave-convex structure's the one side, and is two sets of sealed pad pass through wave structure respectively with the negative plate the anode plate is connected.
2. A bipolar plate seal assembly as claimed in claim 1, wherein: the height difference between the wave crest and the wave trough on the wave structure is less than or equal to 0.2 mm.
3. A bipolar plate seal assembly as claimed in claim 1, wherein: and a first groove for accommodating the wavy structure is arranged on the negative plate and used for installing a sealing gasket.
4. A bipolar plate seal assembly as claimed in claim 1, wherein: and a second groove for accommodating the wave structure is arranged on the anode plate and used for arranging a sealing gasket.
5. A bipolar plate seal assembly as claimed in claim 1, wherein: the sealing gasket on the cathode plate is a cathode sealing gasket, and the sealing gasket on the anode plate is an anode sealing gasket.
6. A fuel cell comprising a stack, characterized in that: the stack comprises a bipolar plate seal according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220927745.2U CN217444439U (en) | 2022-04-21 | 2022-04-21 | Bipolar plate sealing device and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220927745.2U CN217444439U (en) | 2022-04-21 | 2022-04-21 | Bipolar plate sealing device and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217444439U true CN217444439U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220927745.2U Active CN217444439U (en) | 2022-04-21 | 2022-04-21 | Bipolar plate sealing device and battery |
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| Country | Link |
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| CN (1) | CN217444439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116544434A (en) * | 2023-05-31 | 2023-08-04 | 上海氢晨新能源科技有限公司 | Fuel cell unit, fuel cell module and power supply system |
-
2022
- 2022-04-21 CN CN202220927745.2U patent/CN217444439U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116544434A (en) * | 2023-05-31 | 2023-08-04 | 上海氢晨新能源科技有限公司 | Fuel cell unit, fuel cell module and power supply system |
| CN116544434B (en) * | 2023-05-31 | 2024-02-13 | 上海氢晨新能源科技有限公司 | Fuel cell unit, fuel cell module and power supply system |
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