CN210866369U - Bipolar plate for fuel cell - Google Patents
Bipolar plate for fuel cell Download PDFInfo
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- CN210866369U CN210866369U CN201922395203.6U CN201922395203U CN210866369U CN 210866369 U CN210866369 U CN 210866369U CN 201922395203 U CN201922395203 U CN 201922395203U CN 210866369 U CN210866369 U CN 210866369U
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- glue pressing
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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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Abstract
The utility model provides a bipolar plate for a fuel cell, which comprises a cathode plate and an anode plate; a hydrogen flow field region and a cooling flow field region are respectively formed on two sides of the cathode plate, a first glue pressing groove and a second glue pressing groove are formed on the outer side of the cooling flow field region at intervals, the first glue pressing groove is positioned on the outer side of the second glue pressing groove, a first glue overflowing groove and a second glue overflowing groove are respectively formed on the outer side of the first glue pressing groove and the inner side of the second glue pressing groove, a first step surface is formed between the first glue pressing groove and the first glue overflowing groove, and a second step surface is formed between the second glue pressing groove and the second glue overflowing groove; an air flow field region is formed on one side of the anode plate, a smooth surface region is formed on the other side of the anode plate, the cooling flow field region and the smooth surface region are arranged oppositely, first glue pressing protrusions and second glue pressing protrusions are formed on the outer side of the smooth surface region at intervals and correspond to the first glue pressing grooves and the second glue pressing grooves respectively, the sealing effect is enhanced, and the fact that the bonding glue cannot overflow to the flow field region can be effectively guaranteed.
Description
Technical Field
The utility model relates to a fuel cell bipolar plate technical field, concretely relates to bipolar plate for fuel cell.
Background
The bipolar plate is an important component of the proton exchange membrane fuel cell and plays a role in supporting the fuel cell and providing a reaction gas channel and a coolant channel. As for the conditions of use of the bipolar plate itself, the plate itself is required to have not only high electrical conductivity, corrosion resistance, gas permeation resistance, and the like, but also high mechanical strength, rigidity, and the like.
The bipolar plate is generally formed by bonding a cathode plate and an anode plate, in the prior art, the bonding of the bipolar plate is generally formed by dispensing and bonding glue at the edge area of the cathode plate or the anode plate, the glue is often distributed unevenly in the bonding mode, the integral flatness of the bipolar plate is not enough, and meanwhile, the glue easily reaches a sound reproduction area in the extrusion process and even blocks a gas or cooling channel.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bipolar plate for fuel cell to the above-mentioned technical problem who exists when being used for solving among the prior art bipolar plate bonding.
The utility model provides a scheme as follows of above-mentioned technical problem: a bipolar plate for a fuel cell includes a cathode plate and an anode plate which are oppositely arranged;
a hydrogen flow field region and a cooling flow field region are respectively formed on two sides of the cathode plate, a first glue pressing groove and a second glue pressing groove are formed on the outer side of the cooling flow field region at intervals, the first glue pressing groove is positioned on the outer side of the second glue pressing groove, a first glue overflowing groove and a second glue overflowing groove are respectively formed on the outer side of the first glue pressing groove and the inner side of the second glue pressing groove, a first step surface is formed between the first glue pressing groove and the first glue overflowing groove, and a second step surface is formed between the second glue pressing groove and the second glue overflowing groove;
an air flow field region is formed on one side of the anode plate, a smooth surface region is formed on the other side of the anode plate, the cooling flow field region and the smooth surface region are arranged oppositely, first glue pressing protrusions and second glue pressing protrusions are formed on the outer side of the smooth surface region at intervals, and the first glue pressing protrusions and the second glue pressing protrusions respectively correspond to the first glue pressing grooves and the second glue pressing grooves.
The utility model provides a bipolar plate for fuel cell, anode plate and cathode plate are when bonding, the first gluey groove of overflowing and the gluey groove of second of the negative plate of injecting the glue that will bond, then push down the anode plate and bond, first moulding arch and second moulding arch are in with the glue bonding in, with unnecessary glue bonding to the protruding hole extrusion between the protruding and the second moulding arch of first moulding, form the clearance between first gluey groove of overflowing and the second groove of gluing, thereby form the glue bonding-clearance-glue bonding's clearance seal between anode plate and cathode plate, both strengthened sealed effect, again can effectual assurance glue bonding can not overflow the flow field region of anode plate and cathode plate.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a schematic perspective view of a bipolar plate for a fuel cell according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of one side of a cathode plate in an embodiment of the present invention;
FIG. 3 is a schematic perspective view of the other side of the cathode plate in the embodiment of the present invention;
FIG. 4 is a schematic enlarged view of a portion of the area M in FIG. 1;
fig. 5 is a schematic perspective view of one side of an anode plate according to an embodiment of the present invention;
fig. 6 is a schematic perspective view of the other side of the anode plate according to the embodiment of the present invention;
FIG. 7 is a schematic enlarged view of a portion of the region N in FIG. 6;
fig. 8 is a schematic partial cross-sectional view of a cathode plate and an anode plate in accordance with an embodiment of the present invention.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
As shown in fig. 1, the present invention provides a bipolar plate for a fuel cell, which comprises a cathode plate 1 and an anode plate 2 oppositely disposed;
as shown in fig. 2 to 4, a hydrogen flow field region 11 and a cooling flow field region 12 are respectively formed on two sides of the cathode plate 1, a first glue pressing groove 1a and a second glue pressing groove 1b are formed at an interval on the outer side of the cooling flow field region 12, the first glue pressing groove 1a is located on the outer side of the second glue pressing groove 1b, a first glue overflow groove a1 and a second glue overflow groove b1 are respectively formed on the outer side of the first glue pressing groove 1a and the inner side of the second glue pressing groove 1b, a first step surface a2 is formed between the first glue pressing groove 1a and the first glue overflow groove a1, and a second step surface b2 is formed between the second glue pressing groove 1b and the second glue overflow groove b 1;
as shown in fig. 5 to 7, an air flow field region 21 is formed on one side of the anode plate 2, a light surface region 22 is formed on the other side of the anode plate, the cooling flow field region 12 is disposed opposite to the light surface region 22, a first glue pressing protrusion 221 and a second glue pressing protrusion 222 are formed on the outer side of the light surface region 22 at intervals, and the first glue pressing protrusion 221 and the second glue pressing protrusion 222 are disposed corresponding to the first glue pressing groove 1a and the second glue pressing groove 1b, respectively.
The utility model provides a bipolar plate for fuel cell, anode plate and cathode plate are when bonding, the first gluey groove of overflowing and the gluey groove of second of the negative plate of injecting the glue that will bond, then push down the anode plate and bond, first moulding arch and second moulding arch are in with the glue bonding in, with unnecessary glue bonding to the protruding hole extrusion between the protruding and the second moulding arch of first moulding, form the clearance between first gluey groove of overflowing and the second groove of gluing, thereby form the glue bonding-clearance-glue bonding's clearance seal between anode plate and cathode plate, both strengthened sealed effect, again can effectual assurance glue bonding can not overflow the flow field region of anode plate and cathode plate.
As shown in fig. 4 and 7, in order to ensure the stable formation of the gap, a glue separating protrusion 13 is formed between the first glue pressing groove 1a and the second glue pressing groove 1b, a glue running groove 2a is formed between the first glue pressing protrusion 221 and the second glue pressing protrusion 222, the glue running groove 2a is arranged opposite to the glue separating protrusion 13, and the width of the glue running groove 2a is greater than the width of the glue separating protrusion 13.
Referring to fig. 8, the outer sidewall of the first bead 221 is in sealing engagement with the outer sidewall of the first glue overflow groove a1, and the inner sidewall of the second bead 22a is in sealing engagement with the inner sidewall of the second glue overflow groove b 1.
In order to ensure that when the cathode plate 1 and the anode plate 2 are matched and pressed tightly, glue solution injected into the first glue pressing groove 1a and the second glue pressing groove 1b on the cathode plate 1 can be pressed into the glue running grooves by the first glue pressing protrusion 221 and the second glue pressing protrusion 222 on the anode plate 2 so as to realize gap sealing of the cathode plate 1 and the anode plate 2, the width of the first glue pressing protrusion 221 is specified as X1The width of the first glue pressing groove 1a is X2The width of the first glue overflow groove a1 is X3Wherein X is1、X2And X3Satisfy X3<X1<X2+X3；
The width of the second molding compound protrusion 222 is defined as Y1The width of the second glue pressing groove 1b is Y2The width of the second glue overflow groove b1 is Y3Wherein Y is1、Y2And Y3Satisfy Y between3<Y1<Y2+Y3。
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the present invention can be smoothly implemented by those skilled in the art according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.
Claims (4)
1. A bipolar plate for a fuel cell is characterized by comprising a cathode plate and an anode plate which are oppositely arranged;
a hydrogen flow field region and a cooling flow field region are respectively formed on two sides of the cathode plate, a first glue pressing groove and a second glue pressing groove are formed on the outer side of the cooling flow field region at intervals, the first glue pressing groove is positioned on the outer side of the second glue pressing groove, a first glue overflowing groove and a second glue overflowing groove are respectively formed on the outer side of the first glue pressing groove and the inner side of the second glue pressing groove, a first step surface is formed between the first glue pressing groove and the first glue overflowing groove, and a second step surface is formed between the second glue pressing groove and the second glue overflowing groove;
an air flow field region is formed on one side of the anode plate, a smooth surface region is formed on the other side of the anode plate, the cooling flow field region and the smooth surface region are arranged oppositely, first glue pressing protrusions and second glue pressing protrusions are formed on the outer side of the smooth surface region at intervals, and the first glue pressing protrusions and the second glue pressing protrusions respectively correspond to the first glue pressing grooves and the second glue pressing grooves.
2. The bipolar plate for a fuel cell according to claim 1, wherein a glue separation protrusion is formed between the first glue pressing groove and the second glue pressing groove, a glue running groove is formed between the first glue pressing protrusion and the second glue pressing protrusion, the glue running groove is disposed opposite to the glue separation protrusion, and a width of the glue running groove is greater than a width of the glue separation protrusion.
3. The bipolar plate for a fuel cell as set forth in claim 1, wherein an outer sidewall of the first bead is in sealing engagement with an outer sidewall of the first glue overflow groove, and an inner sidewall of the second bead is in sealing engagement with an inner sidewall of the second glue overflow groove.
4. The bipolar plate for a fuel cell as set forth in claim 1, wherein the first bead is defined to have a width X1The width of the first glue pressing groove is X2The width of the first glue overflow groove is X3Wherein X is1、X2And X3Satisfy X3<X1<X2+X3(ii) a The width of the second glue pressing bulge is regulated to be Y1The width of the second glue pressing groove is Y2The width of the second glue overflow groove is Y3Wherein Y is1、Y2And Y3Satisfy Y between3<Y1<Y2+Y3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922395203.6U CN210866369U (en) | 2019-12-27 | 2019-12-27 | Bipolar plate for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922395203.6U CN210866369U (en) | 2019-12-27 | 2019-12-27 | Bipolar plate for fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN210866369U true CN210866369U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922395203.6U Active CN210866369U (en) | 2019-12-27 | 2019-12-27 | Bipolar plate for fuel cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113314725A (en) * | 2021-07-30 | 2021-08-27 | 武汉众宇动力系统科技有限公司 | Fuel cell bipolar plate and bonding method thereof |
| CN114864987A (en) * | 2022-01-28 | 2022-08-05 | 上海神力科技有限公司 | Battery plate bonding structure and bonding method thereof |
| CN116470087A (en) * | 2023-04-21 | 2023-07-21 | 上海氢晨新能源科技有限公司 | Fuel cell bipolar plate and fuel cell |
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2019
- 2019-12-27 CN CN201922395203.6U patent/CN210866369U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113314725A (en) * | 2021-07-30 | 2021-08-27 | 武汉众宇动力系统科技有限公司 | Fuel cell bipolar plate and bonding method thereof |
| CN114864987A (en) * | 2022-01-28 | 2022-08-05 | 上海神力科技有限公司 | Battery plate bonding structure and bonding method thereof |
| CN114864987B (en) * | 2022-01-28 | 2024-04-23 | 上海神力科技有限公司 | Battery polar plate bonding structure and bonding method thereof |
| CN116470087A (en) * | 2023-04-21 | 2023-07-21 | 上海氢晨新能源科技有限公司 | Fuel cell bipolar plate and fuel cell |
| CN116470087B (en) * | 2023-04-21 | 2024-04-05 | 上海氢晨新能源科技有限公司 | Fuel cell bipolar plate and fuel cell |
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