CN213988954U

CN213988954U - Membrane electrode cooling tool

Info

Publication number: CN213988954U
Application number: CN202023004909.4U
Authority: CN
Inventors: 赵坚; 侯俊波; 张扬; 唐喜旺; 陈建春
Original assignee: Guoxiong Hydrogen Energy Technology Henan Co ltd
Current assignee: Guoxiong Hydrogen Energy Technology Henan Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-17
Anticipated expiration: 2030-12-10

Abstract

The utility model provides a membrane electrode cooling tool, which aims at the defect that the membrane electrode is easy to deform during cooling in the prior art, and belongs to the technical field of fuel cells, and comprises a membrane bearing table, wherein a lower pressure membrane is arranged on the membrane bearing table, an upper pressure membrane parallel to the lower pressure membrane is arranged above the lower pressure membrane, and a pressing mechanism capable of pressing the upper pressure membrane and the lower pressure membrane is arranged on the membrane bearing table; the upper film pressing plate and the lower film pressing plate are internally provided with cooling cavities, and the upper film pressing plate and the lower film pressing plate are respectively provided with a water inlet and a water outlet which are communicated with the corresponding cooling cavities. The utility model has the advantages of simple and reasonable structure, convenient assembling is swift, stable performance is reliable, with low costs, the cooling effect is good, can prevent effectively that the polyester frame from taking place deformation, avoids the polyester frame to warp and arouses the irreversible damage to proton exchange membrane to promote the yield of membrane electrode.

Description

Membrane electrode cooling tool

Technical Field

The utility model belongs to the technical field of fuel cell production facility, concretely relates to membrane electrode cooling frock.

Background

A Proton Exchange Membrane Fuel Cell (PEMFC) is a power generation device capable of directly converting chemical energy of a fuel and an oxidant into electrical energy. The Membrane Electrode (MEA) is the core component of the proton exchange membrane fuel cell, provides a micro-channel for transferring multi-phase substances and an electrochemical reaction site for the proton exchange membrane fuel cell, and the performance of the MEA directly determines the performance of the proton exchange membrane fuel cell.

The frame material of the membrane electrode usually selects thermoplastic or thermosetting resin, the polyester frame plays a role of supporting the membrane electrode and also plays a role of extending the edge of the proton exchange membrane, and the frame material is assisted with a glue layer made of the same material, and the glue layer is subjected to glue solidification through high-temperature (not less than 150 ℃) hot pressing, so that the polyester frame and the proton exchange membrane are bonded into a whole to form the membrane electrode CCM with the frame.

The polyester frame is heated and pressed to generate phase state change, the glass state is changed into a high elastic state and a viscous state, the phase state rebounds during natural cooling, deformation in a certain range can be generated, the proton membrane is driven to locally deform, internal stress is generated, the integrity of the proton membrane is damaged, the consumption of the proton membrane is increased, the cost of the membrane electrode production process is increased, and the industrial development of the membrane electrode is not facilitated.

Disclosure of Invention

The utility model discloses take place the drawback of deformation easily when cooling off to membrane electrode among the prior art, provide a membrane electrode cooling frock, this cooling frock cooling effect is good, deformation when can effectively reducing the membrane electrode cooling promotes the yield.

The invention aims to be realized by the following technical scheme: a membrane electrode cooling tool comprises a membrane bearing table, wherein a lower membrane pressing plate is arranged on the membrane bearing table, an upper membrane pressing plate parallel to the lower membrane pressing plate is arranged above the lower membrane pressing plate, and a pressing mechanism capable of pressing the upper membrane pressing plate and the lower membrane pressing plate is arranged on the membrane bearing table; the upper film pressing plate and the lower film pressing plate are internally provided with cooling cavities, and the upper film pressing plate and the lower film pressing plate are respectively provided with a water inlet and a water outlet which are communicated with the corresponding cooling cavities. In the above scheme, the upper pressure diaphragm and the lower pressure diaphragm can both be cooled by cold water, the cooling speed of the membrane electrode can be increased, the membrane electrode is clamped tightly by the upper pressure diaphragm and the lower pressure diaphragm during cooling, the deformation of a polyester frame on the membrane electrode is prevented when the membrane electrode is cooled, the irreversible damage to a proton exchange membrane caused by the deformation of the polyester frame is avoided, and the yield of the membrane electrode can be increased.

Preferably, the lower membrane pressing plate is provided with a membrane carrying groove used for limiting the lower membrane pressing plate, the lower end of the lower membrane pressing plate is embedded into the membrane carrying groove, and the outer side surface of the part, embedded into the membrane carrying groove, of the lower membrane pressing plate is attached to the side wall of the membrane carrying groove. Carry the setting in diaphragm capsule groove, can carry on spacingly to lower diaphragm plate, prevent that hold-down mechanism from taking place lateral shifting with last diaphragm plate and lower diaphragm plate when compressing tightly between the diaphragm plate.

Preferably, the pressing mechanism comprises four studs which are parallel to each other and vertical to the bottom of the film carrying groove, four through holes which are in one-to-one correspondence with the studs are respectively arranged on the upper film pressing plate and the lower film pressing plate, the studs penetrate through the corresponding through holes on the upper film pressing plate and the lower film pressing plate, and nuts positioned above the upper film pressing plate are connected onto the studs in a threaded manner. The mode structure that compresses tightly between going up the diaphragm plate and pressing down the diaphragm plate through nut and bolt cooperation is comparatively simple, and easy to operate.

Preferably, the four studs are respectively arranged at the four corners of the rectangle.

Preferably, the nut is stainless steel.

Preferably, the film bearing table is made of steel materials with the numbers of 304, 316, 276, 904 and 316L.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model has the advantages of simple and reasonable structure, convenient assembling is swift, stable performance is reliable, with low costs, the cooling effect is good, can prevent effectively that the polyester frame from taking place deformation, avoids the polyester frame to warp and arouses the irreversible damage to proton exchange membrane to promote the yield of membrane electrode.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic cross-sectional structure of the present invention;

FIG. 3 is a schematic cross-sectional view of a top press platen;

the labels in the figure are: 1. the film carrying device comprises a film bearing table, 2, a lower film pressing plate, 3, an upper film pressing plate, 4, a film carrying groove, 5, a pressing mechanism, 6, a stud, 7, a through hole, 8, a nut, 9, a cooling cavity, 10, a water inlet, 11 and a water outlet.

Detailed Description

The invention will be further described with reference to the embodiments shown in the drawings to which:

example 1

As shown in fig. 1, 2 and 3, a film electrode cooling tool comprises a film bearing table 1, wherein the film bearing table is made of steel materials with the numbers of 304, 316, 276, 904 and 316L. Bear and be equipped with down pressure lamina membranacea 2 on the diaphragm stage 1, press 2 tops of lamina membranacea to be equipped with the last pressure lamina membranacea 3 that press 2 parallels of lamina membranacea down, be equipped with on the lamina membranacea 2 down and be used for carrying diaphragm capsule 4 to pressing 2 spacing of lamina membranacea down, press 2 lower extreme embeddings of lamina membranacea down carry in the diaphragm capsule 4, press 2 lateral surfaces that carry diaphragm capsule 4 parts of embedding of lamina membranacea down with carry the lateral wall laminating of diaphragm capsule 4.

The film bearing table 1 is provided with a pressing mechanism 5 capable of pressing the upper film pressing plate 3 and the lower film pressing plate 2, the pressing mechanism 5 comprises four studs 6 which are parallel to each other and perpendicular to the bottom of the film bearing groove 4, and the studs 6 are respectively arranged at four rectangular corners. Go up pressure diaphragm plate 3 and respectively be equipped with four through-holes 7 with double-screw bolt 6 one-to-one on the pressure diaphragm plate 2 down, double-screw bolt 6 passes in the through-hole 7 that corresponds on pressure diaphragm plate 3 and the pressure diaphragm plate 2 down, the spiro union has the nut 8 that is located the pressure diaphragm plate 3 top on the double-screw bolt 6. The nut 8 is made of stainless steel.

Go up the pressure membrane board 3 and all be equipped with cooling chamber 9 in the pressure membrane board 2 down, go up pressure membrane board 3 and all be equipped with one with the water inlet 10 and the delivery port 11 that correspond cooling chamber 9 intercommunication with pressure membrane board 2 down.

The utility model discloses need be connected cooling body on last pressure diaphragm plate 3 and lower pressure diaphragm plate 2, cooling body is used for transporting cold water towards water inlet 10 in, and cold water flows out from delivery port 11 again through cooling chamber 9, and cooling unit adopts the refrigerated mode of circulation water bath. When the membrane electrode assembly is used, a membrane electrode is placed between the upper pressure membrane plate 3 and the lower pressure membrane plate 2, the nut 8 is screwed, the nut 8 and the membrane bearing table 1 are matched to compress the upper pressure membrane plate 3 and the lower pressure membrane plate 2 on the upper side and the lower side of the membrane electrode respectively, the water bath cooling can accelerate the cooling speed of the membrane electrode, and the upper pressure membrane plate 3 and the lower pressure membrane plate 2 are matched to compress, so that the deformation of a polyester frame on the membrane electrode during the cooling of the membrane electrode can be prevented, the irreversible damage to a proton exchange membrane caused by the deformation of the polyester frame is avoided, and the yield of the membrane electrode can be improved.

The utility model discloses can place and use behind the hot pressing membrane group, the membrane electrode after the hot pressing is put into the utility model discloses in compress tightly the cooling, can in time cool off the membrane electrode after the hot pressing.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A film electrode cooling tool is characterized by comprising a film bearing table (1), wherein a lower film pressing plate (2) is arranged on the film bearing table (1), an upper film pressing plate (3) parallel to the lower film pressing plate (2) is arranged above the lower film pressing plate (2), and a pressing mechanism (5) capable of pressing the upper film pressing plate (3) and the lower film pressing plate (2) is arranged on the film bearing table (1); go up press mold plate (3) and all be equipped with cooling chamber (9) in pressing mold plate (2) down, go up press mold plate (3) and all be equipped with one with water inlet (10) and delivery port (11) that correspond cooling chamber (9) intercommunication down with pressing mold plate (2).

2. The film electrode cooling tool according to claim 1, wherein a film carrying groove (4) for limiting the lower pressing film plate (2) is formed in the lower pressing film plate (2), the lower end of the lower pressing film plate (2) is embedded into the film carrying groove (4), and the outer side face of the part, embedded into the film carrying groove (4), of the lower pressing film plate (2) is attached to the side wall of the film carrying groove (4).

3. The film electrode cooling tool according to claim 2, wherein the pressing mechanism (5) comprises four studs (6) which are parallel to each other and perpendicular to the bottom of the film carrying groove (4), four through holes (7) which correspond to the studs (6) one by one are respectively formed in the upper film pressing plate (3) and the lower film pressing plate (2), the studs (6) penetrate through the corresponding through holes (7) in the upper film pressing plate (3) and the lower film pressing plate (2), and nuts (8) located above the upper film pressing plate (3) are screwed on the studs (6).

4. The film electrode cooling tool according to claim 3, wherein four studs (6) are respectively arranged at four corners of a rectangle.

5. A film electrode cooling tool according to claim 3, characterized in that the nut (8) is stainless steel.

6. The film electrode cooling tool according to claim 1, wherein the film bearing table (1) is made of a steel material with the reference number of 304, 316, 276, 904 or 316L.