CN213648827U - Graphite plate stamping die of fuel cell bipolar plate - Google Patents
Graphite plate stamping die of fuel cell bipolar plate Download PDFInfo
- Publication number
- CN213648827U CN213648827U CN202021769862.8U CN202021769862U CN213648827U CN 213648827 U CN213648827 U CN 213648827U CN 202021769862 U CN202021769862 U CN 202021769862U CN 213648827 U CN213648827 U CN 213648827U
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- Prior art keywords
- plate
- upper die
- die
- graphite
- fuel cell
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 59
- 239000010439 graphite Substances 0.000 title claims abstract description 59
- 239000000446 fuel Substances 0.000 title claims abstract description 23
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 33
- 239000001257 hydrogen Substances 0.000 claims abstract description 33
- 239000000872 buffer Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract 3
- 239000011324 bead Substances 0.000 abstract 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004382 potting Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method 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 graphite plate stamping die of fuel cell bipolar plate, the mould includes the upper die base, the upper die cell type bead, the upper die hydrogen passageway bead, the upper die base guide post, the blowing board guide post, blowing board buffer spring, the blowing appearance chamber, a pedestal, the lower die base, the lower mould, lower mould cell type through-hole, lower mould hydrogen passageway recess, the pressure flitch guide post, the graphite plate of fuel cell bipolar plate, graphite plate cell type through-hole, graphite plate hydrogen passageway groove, through carrying out gumming modification after stamping forming to flexible graphite plate, realize the batch processing of graphite plate, make bipolar plate processing cost reduce by a wide margin; therefore, the utility model discloses can make excellent performance's graphite cake batch use on the fuel cell.
Description
Technical Field
The utility model relates to a stamping die technical field especially relates to a fuel cell bipolar plate's graphite cake stamping die.
Background
A fuel Cell (Proton Exchange Membrane fuel Cell, abbreviated as PEMFC) is a power generation device that directly converts chemical energy in a fuel and an oxidant into electrical energy through an electrocatalytic reaction at electrodes. A bipolar plate is one of the key components of a PEMFC, and generally it is composed of a plate and a flow field. In a conventional PEMFC, the flow field and the electrode plate may be integrated or separated. The current research and application of bipolar plates is mainly focused on metal and graphite plates. There are three main types of graphite plates: one is an injection molding bipolar plate formed by mixing and pressing graphite powder adhesive; one is a flexible graphite bipolar plate prepared by flexible graphite potting resin; still another type is a high temperature graphitized pure graphite bipolar plate.
For example, chinese patent CN1851966B discloses a method for batch processing of a graphite plate flow field of a fuel cell, which provides one part of one surface of the flow field of the graphite plate, wherein all flow grooves are parallel and penetrate through the whole graphite plate, wherein the width of each flow groove 4 is 1mm, the depth is 2mm, and the width of each groove shoulder 5 is 1 mm. The length of the graphite plate is 200mm, the width of the graphite plate is 60mm, if 95 grooves are formed, the feed speed is 300mm/min, the graphite plate is machined on an end milling machine tool, the testing time is 25min, and after the machining is completed, the diameter of a tool bit of the hard alloy tool is tested to be 0.95 mm. The number of the graphite plates which can be processed by one machine tool is only 16 by calculating 8 hours per day and adding the tool changing time, and the problems of tool bit abrasion and the like exist, so that the cost for processing one graphite plate is high, the processing efficiency is low, and the machine tool is not suitable for batch production.
In addition, the hardness of the flexible graphite bipolar plate prepared by modifying the flexible graphite potting resin is increased, but the toughness of the flexible graphite bipolar plate is reduced, and the flexible graphite bipolar plate is subjected to punch forming to cause air holes.
SUMMERY OF THE UTILITY MODEL
To above problem, the utility model discloses a flexible graphite bipolar plate to carry out the setting that the technology of gumming was again gone on in stamping forming. The utility model discloses a following technical scheme can solve: a graphite plate stamping die of a fuel cell bipolar plate comprises an upper die base, a lower die base, a base, an upper die, a lower die, a material placing plate and a material pressing plate; the lower die holder is fixedly arranged on the base; the upper die base is provided with a plurality of through holes matched with the guide posts of the upper die base; the upper die base is connected with the lower die base through an upper die base guide column; the upper die base moves up and down along the guide of the upper die base when working; the discharging plate is provided with a through hole which is provided with a guide post of the discharging plate, and the discharging plate is provided with a discharging cavity; the lower end of the guide post of the discharging plate is provided with a discharging plate buffer spring, and the discharging plate is connected with the lower die seat through the guide post of the discharging plate; the discharging plate moves up and down along the guiding column of the discharging plate under the stress condition; the upper die is provided with an upper die groove-shaped convex edge and an upper die hydrogen channel convex edge; the lower die is provided with a lower die groove-shaped through hole and a lower die hydrogen channel groove; the material pressing plate is provided with a through hole matched with the guide post of the material pressing plate, and a material pressing plate buffer spring is arranged outside the guide post of the material pressing plate; the material pressing plate is connected with the upper die base through the guide post; the pressure plate can move up and down along the pressure plate guide post; the upper die is fixedly connected with the pressure plate.
Furthermore, the number of the upper die groove-shaped convex ribs on the upper die is 2.
Furthermore, the number of the upper die hydrogen channel ribs on the upper die is more than 2.
Furthermore, the number of the groove-shaped through holes in the lower die is 2.
Furthermore, the number of the grooves of the lower die hydrogen channel on the lower die is more than 2, and is the same as that of the groove-shaped convex ribs on the upper die.
Furthermore, the size of the upper die groove-shaped convex rib on the upper die is the same as that of the groove-shaped through hole on the lower die.
Furthermore, the size of the upper die hydrogen channel convex ridge on the upper die is smaller than that of the lower die hydrogen channel groove on the lower die, and the upper die hydrogen channel convex ridge is positioned in the middle of the lower die hydrogen channel groove during stamping.
Furthermore, the number of the upper die base guide posts is 4.
The utility model discloses there is following benefit:
1. the flexible graphite plate is subjected to punch forming, and the flexible graphite bipolar plate is higher in carving forming efficiency than the flexible graphite bipolar plate prepared by modifying the flexible graphite potting resin.
2. The flexible graphite plate is subjected to punch forming, and the cost of carving and forming is greatly reduced compared with that of the flexible graphite bipolar plate prepared by modifying the flexible graphite encapsulating resin.
3. The flexible graphite plate is firstly punched, and then the punched flexible graphite plate is subjected to gum dipping modification, so that the generation of pores of the bipolar plate graphite plate caused by punching is avoided.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a graphite plate stamping die of a fuel cell bipolar plate.
Fig. 2 is a schematic diagram of the structure of a graphite plate of a bipolar plate for a fuel cell.
Fig. 3 is a schematic diagram of a discharge plate structure of the stamping die.
Fig. 4 is a schematic diagram of a die structure of the stamping die.
Fig. 5 is another view of the structure of the female mold of the stamping mold of fig. 4.
Fig. 6 is a schematic structural view of an upper male die of the stamping die.
In the figure: 1. an upper die holder; 2. an upper die; 21. an upper die groove-shaped convex rib; 22. the upper die is provided with a hydrogen channel rib; 3. an upper die base guide post; 4. a material placing plate; 41. a guide post of the discharging plate; 42. a material discharge plate buffer spring; 43. a discharging cavity; 5. a base; 6. a lower die holder; 7. a lower die; 71. a lower die slot-shaped through hole; 72. a lower die hydrogen channel groove; 8. a material pressing plate; 81. a pressure plate guide post; 9. graphite plates for fuel cell bipolar plates; 91. a graphite plate groove-shaped through hole; 92. graphite plate hydrogen channel groove.
Detailed Description
As shown in fig. 1-6, a graphite plate stamping die for a fuel cell bipolar plate comprises an upper die holder 1, a lower die holder 6, a base 5, an upper die 2, a lower die 7 and a pressure plate 8; the lower die holder 5 is fixedly arranged on the base 5; the upper die base 1 is provided with a plurality of through holes matched with the guide posts 3 of the upper die base; the upper die holder 1 is connected with the lower die holder 6 through the upper die holder guide post 3; the upper die base 1 can move up and down along the upper die base guide column 3; the discharging plate 4 is provided with a through hole which is provided with a guide post 41 of the discharging plate, and the discharging plate 4 is provided with a discharging cavity 43; the lower end of the discharging plate guide post 41 is provided with a discharging plate buffer spring 42, and the discharging plate 4 is connected with the lower die holder 6 through the discharging plate guide post 41; the discharging plate 4 can move up and down along the discharging plate guide post 41 under the stress condition; the upper die 2 is provided with an upper die groove-shaped rib 21 and an upper die hydrogen channel rib 22; the lower die 7 is provided with a lower die groove-shaped through hole 71 and a lower die hydrogen channel groove 72; a through hole matched with the guide post 81 of the pressure plate is formed in the pressure plate 8, and a pressure plate buffer spring is arranged outside the guide post 81 of the pressure plate; the material pressing plate 8 is connected with the upper die holder 1 through a guide post 81; the pressure plate 8 can move up and down along the pressure plate guide post 81; the upper die 2 is fixedly connected with the pressure plate 8.
Preferably, the number of the upper mold groove-shaped convex ribs 21 on the upper mold 2 is 2.
Preferably, the number of the upper mold hydrogen passage ridges 22 on the upper mold 2 is more than 2.
Preferably, the number of the groove-shaped through holes on the lower die 7 is 2.
Preferably, the number of the lower mold hydrogen passage grooves 72 on the lower mold 7 is 2 or more. And the number of the groove-shaped convex ribs 21 is the same as that of the upper die 2.
Preferably, the size of the upper mold groove-shaped rib 21 on the upper mold 2 is the same as the size of the groove-shaped through hole 71 on the lower mold 7.
Preferably, the size of the upper mold hydrogen passage rib 22 on the upper mold 2 is smaller than that of the lower mold hydrogen passage groove 72 on the lower mold 7, and the upper mold hydrogen passage rib 22 is located in the middle of the lower mold hydrogen passage groove 72 during stamping.
The working process is as follows: firstly, a flexible graphite blank is placed in a discharging containing cavity 43 of a discharging plate 4; according to the material characteristics of the modified graphite blank, corresponding downward pressure is applied to the upper die holder 1, the upper die holder 1 moves downwards along the upper die holder guide post 3 under the action of the pressure so as to extrude the pressure plate buffer spring, and the pressure plate 8 drives the upper die 2 to move downwards along the pressure plate guide post 81 under the action of the elastic force of the pressure plate buffer spring; the upper die 2 contacts the discharging plate 4 in the downward movement process to drive the discharging plate 4 to move downward along the discharging plate guide post 41, and the discharging plate buffer spring 42 at the lower end of the discharging plate guide post buffers the discharging plate 4; although the discharging plate 4 can move downwards along with the discharging plate guide post 41, the graphite blank moves downwards and is blocked by the lower die 7 due to the existence of the lower die 7, and the upper die 2 moves downwards along with the continuation of the upper die 2, so that the upper die 2 is close to the lower die 7; the upper mold groove-shaped rib 21 of the upper mold 2 enters the lower mold groove-shaped through hole 71, and the upper mold hydrogen channel rib 22 enters the lower mold hydrogen channel groove 72, so that the graphite blank is punched. And finally, completing the punch forming of the graphite blank.
And (3) after punch forming, modifying the flexible graphite potting resin to prepare the modified graphite bipolar plate.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a graphite plate stamping die of fuel cell bipolar plate which characterized in that: the graphite plate stamping die comprises an upper die base, a lower die base, a base, an upper die, a lower die, a material placing plate and a material pressing plate; the lower die holder is fixedly arranged on the base; the upper die base is provided with a plurality of through holes matched with the guide posts of the upper die base; the upper die base is connected with the lower die base through an upper die base guide column; the upper die base moves up and down along the guide of the upper die base when working; the discharging plate is provided with a through hole which is provided with a guide post of the discharging plate, and the discharging plate is provided with a discharging cavity; the lower end of the guide post of the discharging plate is provided with a discharging plate buffer spring, and the discharging plate is connected with the lower die seat through the guide post of the discharging plate; the discharging plate moves up and down along the guiding column of the discharging plate under the stress condition; the upper die is provided with an upper die groove-shaped convex edge and an upper die hydrogen channel convex edge; the lower die is provided with a lower die groove-shaped through hole and a lower die hydrogen channel groove; the material pressing plate is provided with a through hole matched with the guide post of the material pressing plate, and a material pressing plate buffer spring is arranged outside the guide post of the material pressing plate; the material pressing plate is connected with the upper die base through the guide post; the pressure plate can move up and down along the pressure plate guide post; the upper die is fixedly connected with the pressure plate.
2. The graphite plate stamping die for a fuel cell bipolar plate according to claim 1, wherein: the number of the upper die groove-shaped convex ribs on the upper die is 2.
3. The graphite plate stamping die for a fuel cell bipolar plate according to claim 1, wherein: the number of the upper die hydrogen channel ribs on the upper die is more than 2.
4. The graphite plate stamping die for a fuel cell bipolar plate according to claim 1, wherein: the number of the groove-shaped through holes in the lower die is 2.
5. The graphite plate stamping die for a fuel cell bipolar plate according to claim 1, wherein: the number of the lower die hydrogen channel grooves on the lower die is more than 2, and the number of the lower die hydrogen channel grooves is the same as that of the upper die groove-shaped convex edges of the upper die.
6. The graphite plate stamping die for a fuel cell bipolar plate according to claim 1, wherein: the size of the upper die groove-shaped convex edge on the upper die is the same as that of the groove-shaped through hole on the lower die.
7. The graphite plate stamping die for a fuel cell bipolar plate according to claim 1, wherein: the size of the upper die hydrogen channel convex edge on the upper die is smaller than that of the lower die hydrogen channel groove on the lower die, and the upper die hydrogen channel convex edge is positioned in the middle of the lower die hydrogen channel groove during stamping.
8. The graphite plate stamping die for a fuel cell bipolar plate according to claim 1, wherein: the number of the upper die base guide posts is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021769862.8U CN213648827U (en) | 2020-08-23 | 2020-08-23 | Graphite plate stamping die of fuel cell bipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021769862.8U CN213648827U (en) | 2020-08-23 | 2020-08-23 | Graphite plate stamping die of fuel cell bipolar plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213648827U true CN213648827U (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021769862.8U Active CN213648827U (en) | 2020-08-23 | 2020-08-23 | Graphite plate stamping die of fuel cell bipolar plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523023A (en) * | 2022-02-15 | 2022-05-24 | 河北光兴半导体技术有限公司 | Stamping system and stamping forming method for fuel cell unipolar plate |
-
2020
- 2020-08-23 CN CN202021769862.8U patent/CN213648827U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523023A (en) * | 2022-02-15 | 2022-05-24 | 河北光兴半导体技术有限公司 | Stamping system and stamping forming method for fuel cell unipolar plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220126 Address after: 215400 6th floor, R & D West building, science and technology entrepreneurship Park, No. 6, Beijing West Road, Taicang City, Suzhou City, Jiangsu Province Patentee after: Suzhou Xinhe Zhida Energy Technology Co.,Ltd. Address before: 215324 No.12, Gu Village (26), Sanlian Village, Jinxi Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: Xia Lijun |