CN113980620A - Method for manufacturing hydrogen fuel cell sealing gasket - Google Patents
Method for manufacturing hydrogen fuel cell sealing gasket Download PDFInfo
- Publication number
- CN113980620A CN113980620A CN202111319325.2A CN202111319325A CN113980620A CN 113980620 A CN113980620 A CN 113980620A CN 202111319325 A CN202111319325 A CN 202111319325A CN 113980620 A CN113980620 A CN 113980620A
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- Prior art keywords
- sealant
- sealing gasket
- film
- groove
- fuel cell
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000001257 hydrogen Substances 0.000 title claims abstract description 18
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 18
- 239000000446 fuel Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000000565 sealant Substances 0.000 claims abstract description 57
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 238000007790 scraping Methods 0.000 claims abstract description 3
- 229920002799 BoPET Polymers 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 9
- 239000004809 Teflon Substances 0.000 claims description 8
- 229920006362 Teflon® Polymers 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 238000001723 curing Methods 0.000 abstract description 14
- 230000035699 permeability Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 9
- 239000007789 gas Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000012812 sealant material Substances 0.000 abstract description 3
- 238000003848 UV Light-Curing Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 15
- 229910002804 graphite Inorganic materials 0.000 description 15
- 239000010439 graphite Substances 0.000 description 15
- 229920002367 Polyisobutene Polymers 0.000 description 12
- 239000004743 Polypropylene Substances 0.000 description 8
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 8
- 229910052753 mercury Inorganic materials 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 230000001678 irradiating effect Effects 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 239000012945 sealing adhesive Substances 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004590 silicone sealant Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C09J123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C09J123/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefines
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/401—Adhesives in the form of films or foils characterised by release liners characterised by the release coating composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/005—Presence of polyester in the release coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
- C09J2483/003—Presence of polysiloxane in the primer coating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a manufacturing method of a hydrogen fuel cell sealing gasket. Constructing a groove on the substrate to form a structure of a required sealing gasket; injecting UV sealant into the groove and scraping; laminating a film with a release layer and then carrying out ultraviolet irradiation curing; transferring the sealant cured by ultraviolet rays to a bipolar plate of the hydrogen fuel cell, and peeling the film. The invention adopts the UV curing sealant with low moisture permeability and high gas permeability, the sealant material can be utilized by nearly 100 percent, no material waste is caused, the thickness of the obtained sealing gasket is uniform, the surface is smooth, the edge is free from burrs, and the manufacturing process is simple and efficient; the gasket prepared by the invention is attached to the film with the release layer, so that the gasket cannot deform in the transfer process, the alignment is easy in the assembly process, the automation is easy to realize, and the assembly efficiency is greatly improved.
Description
Technical Field
The invention relates to a manufacturing method of a hydrogen fuel cell sealing gasket, belonging to the field of new energy.
Background
The sealing gasket is generally manufactured into a sheet with uniform thickness by adopting an addition type organic silicon injection molding method, and then die cutting is carried out according to the required shape of the gasket, so that most area of the sheet is cut off and discarded, and the material waste rate reaches more than 80%. Simultaneously, the joint strip after the cross cutting, because of the soft easy deformation of rubber characteristic, difficult realization automation is counterpointed at the in-process of equipment pile, can only the manual work laminate of counterpointing, and packaging efficiency is very low, is difficult to satisfy the volume production needs.
If the traditional dispensing process is adopted, although material waste is avoided, the required height of the adhesive tape cannot be accurately controlled, even if the height tolerance can be positive and negative 30 micrometers (which is difficult to achieve), because a pile is provided with 300 layers of bipolar plates, the tolerance is still large after stacking, so that the assembly stress is uneven, and the sealing failure and leakage are easy to occur.
In addition, the commonly used sealing gasket is generally made of addition type organic silicon, although the heat resistance is good, the moisture permeability is high, the acid-resistant liquid is insufficient, the air permeability, particularly the hydrogen permeability, is the highest in all rubber sealing sealants, so that the requirement of the hydrogen fuel cell on the high barrier property of hydrogen is far from being met, and the sealing gasket with the characteristics of low moisture permeability, high gas permeability, low compression permanent deformation, glycol water solution resistance, acid-resistant liquid resistance, 90-degree high temperature resistance and the like is urgently needed. And develops a simple and efficient gasket preparation process.
Disclosure of Invention
The invention aims to provide a manufacturing method of a hydrogen fuel cell sealing gasket.
The technical solution for realizing the purpose of the invention is as follows: a manufacturing method of a hydrogen fuel cell sealing gasket comprises the steps of constructing a groove on a substrate to form a structure of the required sealing gasket, injecting ultraviolet curing type sealant (UV sealant) into the groove, scraping the groove by a scraper, coating a film with a release layer, and then irradiating and curing ultraviolet rays; transferring the cured sealant to a bipolar plate of the hydrogen fuel cell, and peeling the film.
Compared with the prior art, the invention has the following advantages:
(1) the preparation method of the invention can also be used for a thermosetting organosilicon sealant system, but the thermosetting time is generally prolonged, the production efficiency is low, and the curing speed is far lower than that of a photocuring sealant, and the efficiency is high.
(2) The invention adopts the UV curing sealant with low moisture permeability and high gas permeability, the sealant material can be utilized by nearly 100 percent, no material waste is caused, the obtained sealing gasket has uniform thickness, smooth surface and no burr on the edge, and the manufacturing process is simple and efficient.
(3) The gasket prepared by the invention is attached to the film with the release layer, so that the gasket cannot deform in the transfer process, the alignment is easy in the assembly process, the automation is easy to realize, and the assembly efficiency is greatly improved.
Drawings
FIG. 1 is a schematic view of the structure of a gasket of the present invention.
Detailed Description
Precisely carving a groove on a substrate (a Teflon plate, a glass plate or a metal plate) to form a structure of a required sealing gasket, strictly controlling the depth and the width of the groove, and manufacturing the groove with a smooth surface and no burrs, wherein the structural schematic diagram of the sealing gasket is shown in figure 1, but the sealing gasket is not limited to the structural shape of the schematic diagram. The hydrogen fuel cell sealing gasket with any structure can be prepared by adopting the method.
The invention relates to a manufacturing method of a hydrogen fuel cell sealing gasket, which is characterized in that a groove is constructed on a substrate to form a structure of the required sealing gasket, a parting agent or a parting layer is coated on the surface of the groove according to the material of the substrate and the need of necessity, ultraviolet curing type sealing adhesive (UV sealing adhesive) is injected into the groove and then is scraped by a scraper, a film with the parting layer is used for laminating, such as a PP (polypropylene) film or a PET (polyester) film, after lamination, the UV sealing adhesive and the film are ensured to have no bubbles and defects, and then ultraviolet irradiation curing is carried out by a UV-LED or a mercury lamp according to the characteristics of the UV sealing adhesive. After curing, because sealed glue (seal gasket) adheres to PP or PET film, can shift to in the graphite bipolar plate of hydrogen fuel cell or the slot of metal bipolar plate very easily (be the reservation position of seal gasket promptly), and can keep original sealed glue structural shape, sealed glue can not warp, fixes a position easily, carries out automatic equipment easily, it can to peel off PP or PET film.
In order to more easily strip the sealant from the PP or PET film, before transferring the uv-cured sealant, a moisture-cured primer or a light-cured primer needs to be pre-coated in the groove of the graphite bipolar plate or the metal bipolar plate on which the sealing gasket is disposed, after transferring the sealant into the groove of the graphite bipolar plate or the metal bipolar plate, the sealant can be firmly adhered to the bipolar plate after the primer is completely cured, and then the PP or PET film is stripped.
According to the material of the substrate, a release agent or a release layer is coated on the surface of the groove if necessary, and when the Teflon plate is adopted as the substrate, the Teflon plate has ultralow surface energy and has a release effect, so that the release agent or the release layer is not required to be coated.
When a glass plate or a metal plate is used as a substrate, a release agent or a release layer needs to be coated on the surface of the groove so that the UV sealing adhesive can be easily peeled off after being cured. The release agent or release layer should have a peel force less than the peel force of the release layer on the PP film or PET film. So that the sealant can be easily peeled off from the glass plate or the metal plate without peeling off the sealant from the PP or PET film. The glass plate or the metal plate has the advantages of higher hardness and more delicate structure of the seal gasket carved on the surface of the glass plate or the metal plate.
The peel force test method is as follows: the de sha 7475 adhesive tape is stuck on a release surface, and is rolled back and forth for 2 times (four times) by a standard press roller, and the peeling force is tested after the tape is placed for 24 hours. The testing temperature is 23 degrees +/-2 degrees, and the speed of a tensile machine is 300 mm/min.
The UV sealant disclosed by the invention is preferably a UV sealant with low compression set, low moisture permeability and high gas barrier property.
Further preferred are UV curable sealants of Polyisobutylene (PIB) structure. The UV sealant not only has the characteristics of low moisture permeability, high gas barrier property and low compression set, but also has the characteristics of glycol aqueous solution resistance, acid liquid resistance, 90-degree high temperature resistance, proper hardness and elasticity and the like. Of all rubbery polymeric elastomers, polyisobutylene structures are the best choice for the present invention.
The UV sealant with the polyisobutylene structure is preferably UV-350T sealant from New Material Co., Ltd, Mbps, Suzhou.
For comparison, a gasket of the same construction was made in the same manner using heat cured silicone (HS-300 TG from New materials, Mpa, Suzhou) and the sealant properties were tested and compared.
The present invention prefers a UV-cured primer, preferably a UV-cured silicone primer, and more preferably a UVAS-2000 silicone primer from sapropham new materials, inc.
The sealing gasket prepared by the method of the invention has the advantages that the sealant material can be utilized by nearly 100 percent, no material waste is caused, the thickness of the obtained sealing gasket is uniform, the surface is smooth, no burr is generated on the edge, and the manufacturing process is simple and efficient. The invention improves the assembly working efficiency of the sealing gasket and the assembly quality of the hydrogen fuel cell stack.
The sealing gasket structure shown in figure 1 is carved on a teflon plate with the thickness of 10mm, and a release layer is not required to be coated on the surface of the groove. Coating UV-350T sealant (polyisobutylene structure UV sealant) in the groove, laminating with PET film with release force of 30g/25mm, ensuring no bubble and defect between UV sealant and film, and irradiating with high-pressure mercury lamp at 2000mJ/cm2And curing the sealant. And peeling the PET film with the sealant from the Teflon for later use.
Coating an organic silicon primer UVAS-2000 in a sealant groove of the graphite bipolar plate, aligning a PET film attached with polyisobutylene sealant into the corresponding groove, and irradiating 2000mJ/cm by using a high-pressure mercury lamp2And curing the primer. The PET film is peeled off, and the polyisobutylene sealant is left on the reserved position of the graphite bipolar plate. And then, a plurality of graphite bipolar plates can be laminated and assembled into a stack according to the requirements of the stack. The properties of the prepared gasket seals are shown in Table-1.
TABLE-1 UV-curable polyisobutylene sealant Properties
(example 2) a sealing gasket structure shown in fig. 1 was engraved on a glass plate having a thickness of 10mm, a release agent having a peeling force of 10g/25mm was coated on the surface of a groove, after the release agent was cured, a UV-350T sealant was knife-coated inside the groove, a PET film having a peeling force of 30g/25mm was coated on the inside of the groove, no bubble or defect was generated between the UV sealant and the film after the film was coated, and then a high-pressure mercury lamp was irradiated at 2000mJ/cm2And curing the sealant. The sealant-attached PET film was peeled off from the glass plate for use.
Coating an organic silicon primer UVAS-2000 in a sealant groove of the graphite bipolar plate, aligning a PET film attached with polyisobutylene sealant into the corresponding groove, and irradiating 2000mJ/cm by using a high-pressure mercury lamp2And curing the primer. The PET film was peeled off and the polyisobutylene sealant was left on the graphite bipolar plate. And then, a plurality of graphite bipolar plates can be laminated and assembled into a galvanic pile according to the requirements of the galvanic pile, and the performance of the prepared sealing gasket is not greatly different from that of the sealing gasket prepared in the embodiment 1.
Example 3A sealing gasket structure shown in FIG. 1 was engraved on a stainless steel plate having a thickness of 10mm, a release agent having a peeling force of 10g/25mm was coated on the surface of a groove, after the release agent was cured, a UV-350T sealant was knife-coated inside the groove, a PET film having a peeling force of 30g/25mm was laminated on the surface of the groove, and after the lamination, it was ensured that there were no bubbles and defects between the UV sealant and the film, and then a high-pressure mercury lamp was used to irradiate 2000mJ/cm2And curing the sealant. The sealant-attached PET film was peeled off from the stainless steel plate for use.
Coating an organic silicon primer UVAS-2000 in a sealant groove of the graphite bipolar plate, aligning a PET film attached with polyisobutylene sealant into the corresponding groove, and irradiating 2000mJ/cm by using a high-pressure mercury lamp2And curing the primer. The PET film was peeled off and the polyisobutylene sealant was left on the graphite bipolar plate. Then, a plurality of graphite bipolar plates can be laminated and assembled into a stack according to the stack requirements, and the performance of the prepared sealing gasket and the seal prepared in the embodiment 1 areThe gasket performance results are not very different.
Comparative example 1 the gasket structure shown in fig. 1 was engraved on a teflon plate having a thickness of 10mm, and a release layer was not required to be coated on the surface of the groove. Coating the sealant HS-300TG of the thermosetting organosilicon system in the groove in a blade mode, laminating with a PET film with the release force of 30g/25mm, ensuring that no bubbles or defects exist between the sealant and the film after laminating, and heating at 130 ℃ for 60 minutes to cure the sealant. And peeling the PET film attached with the sealant from the Teflon plate for later use.
Coating an organic silicon primer UVAS-2000 in a sealant groove of the graphite bipolar plate, aligning a PET film attached with HS-300TG sealant into the corresponding groove, and irradiating 2000mJ/cm by using a high-pressure mercury lamp2And curing the primer. The PET film was peeled off and the HS-300TG silicone sealant was left on the graphite bipolar plate. And then, a plurality of graphite bipolar plates can be laminated and assembled into a stack according to the requirements of the stack. The properties of the resulting gasket are shown in Table-2.
TABLE-2 HS-300TG Silicone sealant Properties
Claims (10)
1. A manufacturing method of a hydrogen fuel cell sealing gasket is characterized in that a groove is constructed on a substrate to form a structure of the required sealing gasket; injecting UV sealant into the groove and scraping; laminating a film with a release layer and then carrying out ultraviolet irradiation curing; and transferring the UV sealant after ultraviolet curing to a bipolar plate of the hydrogen fuel cell, and peeling the film.
2. The method of claim 1, wherein the substrate is a teflon plate.
3. The method of claim 1, wherein the substrate is a glass plate or a metal plate.
4. The method of claim 3, wherein when the substrate is a glass plate or a metal plate, the UV sealant is injected into the trench and scraped off after the surface of the trench is coated with a release agent or a release layer.
5. The method of claim 1, wherein the film having the release layer is a PP film or a PET film.
6. The method of claim 1 wherein the UV sealant is a polyisobutylene-structured UV curable sealant.
7. The method of claim 1 wherein the UV sealant is UV-350T.
8. The method of claim 1, wherein the grooves of the bipolar plate of the hydrogen fuel cell having the sealing gasket are pre-coated with a moisture-curable primer or a light-curable primer, the UV-curable sealant is transferred into the grooves of the bipolar plate, and the film is peeled off after the primer is completely cured.
9. The method of claim 8, wherein the primer is a UV-cured silicone primer.
10. The method of claim 8, wherein the primer is a UVAS-2000 silicone primer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111319325.2A CN113980620A (en) | 2021-11-09 | 2021-11-09 | Method for manufacturing hydrogen fuel cell sealing gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111319325.2A CN113980620A (en) | 2021-11-09 | 2021-11-09 | Method for manufacturing hydrogen fuel cell sealing gasket |
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| Publication Number | Publication Date |
|---|---|
| CN113980620A true CN113980620A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111319325.2A Pending CN113980620A (en) | 2021-11-09 | 2021-11-09 | Method for manufacturing hydrogen fuel cell sealing gasket |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1568557A (en) * | 2001-05-15 | 2005-01-19 | 洁能氏公司 | Apparatus for and method of forming seals in fuel cells and fuel cell stacks |
| CN101553943A (en) * | 2006-01-17 | 2009-10-07 | 汉高公司 | Sealant integrated fuel cell components and methods and systems for producing the same |
| CN101651188A (en) * | 2008-08-15 | 2010-02-17 | 汉能科技有限公司 | Fuel cell sealing method and sealing structure |
| CN105244516A (en) * | 2015-10-13 | 2016-01-13 | 航天新长征电动汽车技术有限公司 | Paste device of fuel cell sealing elements |
| CN107922554A (en) * | 2015-07-30 | 2018-04-17 | 三键有限公司 | Photocurable resin composition, fuel cell and encapsulating method |
| CN108172859A (en) * | 2016-12-07 | 2018-06-15 | 中国科学院大连化学物理研究所 | A kind of bipolar plates used for high-temperature fuel cell and its manufacturing method |
| CN109286023A (en) * | 2018-09-27 | 2019-01-29 | 深圳市南科燃料电池有限公司 | A kind of bipolar plates and its viscose assemble method |
| CN109585876A (en) * | 2019-01-21 | 2019-04-05 | 深圳市南科燃料电池有限公司 | Fuel battery double plates sealing structure and encapsulating method |
-
2021
- 2021-11-09 CN CN202111319325.2A patent/CN113980620A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1568557A (en) * | 2001-05-15 | 2005-01-19 | 洁能氏公司 | Apparatus for and method of forming seals in fuel cells and fuel cell stacks |
| CN101553943A (en) * | 2006-01-17 | 2009-10-07 | 汉高公司 | Sealant integrated fuel cell components and methods and systems for producing the same |
| CN101651188A (en) * | 2008-08-15 | 2010-02-17 | 汉能科技有限公司 | Fuel cell sealing method and sealing structure |
| CN107922554A (en) * | 2015-07-30 | 2018-04-17 | 三键有限公司 | Photocurable resin composition, fuel cell and encapsulating method |
| CN105244516A (en) * | 2015-10-13 | 2016-01-13 | 航天新长征电动汽车技术有限公司 | Paste device of fuel cell sealing elements |
| CN108172859A (en) * | 2016-12-07 | 2018-06-15 | 中国科学院大连化学物理研究所 | A kind of bipolar plates used for high-temperature fuel cell and its manufacturing method |
| CN109286023A (en) * | 2018-09-27 | 2019-01-29 | 深圳市南科燃料电池有限公司 | A kind of bipolar plates and its viscose assemble method |
| CN109585876A (en) * | 2019-01-21 | 2019-04-05 | 深圳市南科燃料电池有限公司 | Fuel battery double plates sealing structure and encapsulating method |
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Application publication date: 20220128 |