CN210224175U - Current collecting plate for fuel cell stack - Google Patents
Current collecting plate for fuel cell stack Download PDFInfo
- Publication number
- CN210224175U CN210224175U CN201921626255.3U CN201921626255U CN210224175U CN 210224175 U CN210224175 U CN 210224175U CN 201921626255 U CN201921626255 U CN 201921626255U CN 210224175 U CN210224175 U CN 210224175U
- Authority
- CN
- China
- Prior art keywords
- collecting plate
- coating
- plate body
- current collecting
- busbar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 36
- 238000000576 coating method Methods 0.000 claims abstract description 36
- 229910020938 Sn-Ni Inorganic materials 0.000 claims abstract description 6
- 229910008937 Sn—Ni Inorganic materials 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000005422 blasting Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model relates to a current collecting plate for fuel cell pile, this current collecting plate include integrated into one piece's collecting plate body and busbar, the collecting plate body is connected with the pile monocell, the busbar with be 90 degrees between the collecting plate body and draw forth to the outside of battery case as the pin of current collecting plate, the coating has high conductive wear-resisting coating on collecting plate body and the busbar the cover is equipped with the pyrocondensation pipe of high insulation on the busbar. In the preparation process, the abrasion resistance and the overall strength of the current collecting plate are improved through the shot blasting process, and the Sn-Ni double coating can prevent the conductivity from being reduced due to the damage of the coating in the shot blasting process of the single coating, so that the stable and efficient current collection can be ensured.
Description
Technical Field
The invention relates to a current collecting plate for a fuel cell stack.
Background
The current collecting pole plate of the fuel cell pile is one of the main accessories, and the conductivity greatly influences the overall output efficiency of the fuel cell. Because the fuel cell stack generates larger current, higher voltage, higher ambient temperature and large humidity, the collection stability and the collection ratio of the current directly determine the overall power of the stack. The pure copper plate is used for manufacturing the current collecting plate with the proper size, the copper conducting strip is used for welding the current collecting plate to the galvanic pile during use, but the resistance is increased after welding, the strength is reduced, heat and electric energy are easily generated, and the galvanic pile is easy to crack.
How to reliably improve the collection efficiency of the current collection plate is a technical problem which is urgently needed to be solved at present.
Disclosure of Invention
The invention aims to provide a current collecting plate for a fuel cell stack, which can improve the current collecting efficiency of the current collecting plate, improve the working reliability and effectively prolong the service life.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a current collecting plate for a fuel cell stack, which comprises a collecting plate body and a conducting bar which are integrally formed, wherein the collecting plate body is connected with a stack single cell, the conducting bar and the collecting plate body form a 90-degree angle and are led out to the outer side of a cell shell as a pin of the current collecting plate, the collecting plate body and the conducting bar are coated with a high-conductivity wear-resistant coating, and a high-insulation heat-shrinkable tube is sleeved on the conducting bar.
Further, the collecting plate body and the conducting bars are integrally formed by punching and molding a pure copper plate.
Furthermore, the high-conductivity wear-resistant coating is an Sn-Ni coating, wherein the thickness of the Sn coating is 5-10 mu m, and the thickness of the Ni coating is 10-15 mu m.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the current collecting plate for the fuel cell stack provided by the invention has a simple integral structure, the coated coating can effectively ensure that the conductivity of the current collecting plate is not obviously weakened while the integral conductivity is enhanced, the oxidation resistance of the current collecting plate can also be improved, the wear resistance and the integral strength of the current collecting plate are improved through a shot blasting process in the preparation process of the current collecting plate, and the Sn-Ni double coating can prevent the coating from being damaged in shot blasting processing to cause the conductivity to be reduced, so that the stable and efficient current collection can be ensured.
Furthermore, a high-insulation heat-shrinkable tube is used for protecting the copper conductor, so that short circuit is avoided, and personal safety and electric pile equipment safety are protected.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of a current collecting plate for a fuel cell stack according to an embodiment of the present invention.
Wherein the reference numerals are as follows:
1. the galvanic pile comprises a galvanic pile, a collecting plate body, a conducting strip, a heat-shrinkable tube and a heat-shrinkable tube, wherein the collecting plate body is 2, and the conducting strip is 3.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being 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 invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment describes a current collecting plate for a fuel cell pile, as shown in fig. 1, including integrated into one piece's collecting plate body 2 and conducting strip 3, collecting plate body 2 and conducting strip 3 are by the integrative stamping forming of pure copper plate, collecting plate body 2 is connected with 1 monocell of pile, conducting strip 3 with be 90 degrees between the collecting plate body 2 and draw forth to the outside of cell shell as the pin of current collecting plate, it has high conductive wear-resisting coating to coat on collecting plate body 2 and conducting strip 3 the cover is equipped with high insulating pyrocondensation pipe 4 on the conducting strip 3.
The high-conductivity wear-resistant coating is an Sn-Ni coating, wherein the thickness of the Sn coating is 5-10 mu m, and the thickness of the Ni coating is 10-15 mu m.
In the preparation of the current collecting plate for a fuel cell stack, the processing comprises the following steps:
stamping a pure copper plate with the thickness of 0.5mm to form a collecting plate body and a conductive strip by processing;
spraying a Sn coating on the surfaces of the collecting plate body and the conductive strips, wherein the thickness of the Sn coating is 15-25 mu m, and then carrying out low-power shot blasting on the collecting plate body and the conductive strips sprayed with the Sn coating through glass yarns to enable the surfaces of the Sn coating to be provided with pits until the shot blasting of the Sn coating reaches 5-10 mu m;
spraying a Ni coating on the Sn coating, wherein the spraying thickness of the Ni coating is 10-15 mu m;
and finally, drying and discharging.
Furthermore, after the Sn coating is sprayed and air-dried, a high-insulation heat-shrinkable tube is sleeved on the bus bar and used for protecting the copper bus bar and preventing short circuit.
In conclusion, the current collecting plate for the fuel cell stack provided by the invention has a simple integral structure, the coated coating can effectively ensure that the conductivity of the current collecting plate is not obviously weakened while the integral conductivity is enhanced, the oxidation resistance of the current collecting plate can also be improved, the wear resistance and the integral strength of the current collecting plate are improved through a shot blasting process in the preparation process of the current collecting plate, and the Sn-Ni double coating can prevent the coating from being damaged in shot blasting processing to cause the conductivity to be reduced, so that stable and efficient current collection can be ensured.
Furthermore, a high-insulation heat-shrinkable tube is used for protecting the copper conductor, so that short circuit is avoided, and personal safety and electric pile equipment safety are protected.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (3)
1. The utility model provides a current collecting plate for fuel cell pile which characterized in that, includes integrated into one piece's collecting plate body and busbar, the collecting plate body is connected with the galvanic pile monocell, the busbar with be 90 degrees between the collecting plate body and draw forth to the outside of cell casing as the pin of current collecting plate, the coating has high electrically conductive wear-resisting coating on collecting plate body and the busbar the cover is equipped with the pyrocondensation pipe of high insulation on the busbar.
2. The current collector plate for a fuel cell stack according to claim 1, wherein the collector plate body and the conductive bar are integrally stamped and formed from a pure copper plate.
3. The current collector plate for a fuel cell stack according to claim 1 or 2, wherein the highly conductive wear-resistant coating is an Sn-Ni coating, wherein the Sn coating has a thickness of 5 to 10 μm and the Ni coating has a thickness of 10 to 15 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626255.3U CN210224175U (en) | 2019-09-27 | 2019-09-27 | Current collecting plate for fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626255.3U CN210224175U (en) | 2019-09-27 | 2019-09-27 | Current collecting plate for fuel cell stack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210224175U true CN210224175U (en) | 2020-03-31 |
Family
ID=69920898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921626255.3U Expired - Fee Related CN210224175U (en) | 2019-09-27 | 2019-09-27 | Current collecting plate for fuel cell stack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210224175U (en) |
-
2019
- 2019-09-27 CN CN201921626255.3U patent/CN210224175U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 |