CN216213567U - Vacuum laminating device for membrane electrode frame of fuel cell - Google Patents

Vacuum laminating device for membrane electrode frame of fuel cell Download PDF

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CN216213567U
CN216213567U CN202122560173.7U CN202122560173U CN216213567U CN 216213567 U CN216213567 U CN 216213567U CN 202122560173 U CN202122560173 U CN 202122560173U CN 216213567 U CN216213567 U CN 216213567U
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frame
membrane electrode
adsorption
lower frame
ccm
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杜瓦·瑞·苏萨
唐海
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Shanghai Yihydrogen Technology Co ltd
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Shanghai Yihydrogen Technology Co ltd
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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 relates to a vacuum laminating device for a membrane electrode frame of a fuel cell, which comprises a lower frame adsorption unit, an upper frame adsorption unit, a sealing gasket and a vacuumizing pipeline, wherein the lower frame adsorption unit is provided with two independent vacuum adsorption areas which are respectively a frame adsorption area and a CCM adsorption area, the frame adsorption area is used for adsorbing the upper frame and the lower frame of the membrane electrode, and the CCM adsorption area is used for adsorbing the CCM of the membrane electrode; the upper frame adsorption unit is provided with an independent vacuum adsorption area; the sealing gasket is fixed on the surface of the lower frame adsorption unit, and the upper frame adsorption unit, the sealing gasket and the lower frame adsorption unit are combined to form a combined chamber for isolating the outside; the vacuumizing pipeline is respectively used for vacuumizing and adsorbing the upper frame of the membrane electrode, the lower frame of the membrane electrode and the membrane electrode CCM; the utility model can be used for manually, semi-automatically and automatically attaching the frame of the membrane electrode of the fuel cell, and can reduce the defects of attaching wrinkles of the frame, attaching and mixing bubbles of the frame and the like.

Description

Vacuum laminating device for membrane electrode frame of fuel cell
[ technical field ]
The utility model belongs to the field of hydrogen energy, and particularly relates to a vacuum laminating device for a membrane electrode frame of a fuel cell.
[ background art ]
The hydrogen fuel cell is used for catalyzing H2 and O2 to convert chemical energy into electric energy, and has the characteristics of high efficiency and environmental protection. The hydrogen fuel cell core component membrane electrode is used for providing a fuel cell electrochemical reaction area and consists of a proton exchange membrane, a catalyst and a gas diffusion layer, wherein the catalyst is adhered and attached to the proton membrane.
In the process of preparing the membrane electrode, a Catalyst is prepared on a proton exchange membrane to form a Catalyst coated proton membrane CCM (Catalyst coated membrane, abbreviated as CCM), and the periphery of the CCM is bonded and fixed by two frame membranes shaped like Chinese character hui, so that a Catalyst area is reserved for an electrochemical reaction occasion. The product performance and the service life are seriously influenced by the attaching defects of the frame of the membrane electrode, such as air bubbles, folds and the like.
Although the prior art discloses some membrane electrode frame attachment methods, such as: a fuel cell membrane electrode frame attaching device and method (publication No. CN109216724B), a membrane electrode frame attaching method and attaching device (publication No. CN111009668A), and a CCM attaching device (publication No. CN 112223878A). However, the disclosed and reported membrane electrode frame attaching technology utilizes a vacuum adsorption positioning frame film to attach the frames on the upper side and the lower side of the CCM, but the device mechanism is complicated, the occupied area is large, and certain bubble inclusion risk exists in the frame attaching process.
[ contents of utility model ]
The utility model aims to solve the defects and provide a vacuum laminating method for a fuel cell membrane electrode frame, which can be used for manually, semi-automatically and automatically laminating the fuel cell membrane electrode frame and can reduce the defects of frame laminating wrinkles, frame laminating inclusion bubbles and the like.
The vacuum laminating device for the membrane electrode frame of the fuel cell comprises a lower frame adsorption unit 101, an upper frame adsorption unit 107, a sealing gasket 109 and a vacuum-pumping pipeline, wherein the lower frame adsorption unit 101 is provided with two independent vacuum adsorption areas which are a frame adsorption area 103a and a CCM adsorption area 103b respectively, the frame adsorption area 103a is used for adsorbing an upper frame 106 of a membrane electrode and a lower frame 104 of the membrane electrode, and the CCM adsorption area 103b is used for adsorbing a CCM105 of the membrane electrode; the upper frame adsorption unit 107 is provided with an independent vacuum adsorption area for adsorbing the upper frame 106 of the membrane electrode; the sealing gasket 109 is fixed on the surface of the lower frame adsorption unit 101, and the upper frame adsorption unit 107, the sealing gasket 109 and the lower frame adsorption unit 101 are combined to form a combined chamber for isolating the outside; the vacuum-pumping pipeline is respectively connected with the lower frame adsorption unit 101 and the upper frame adsorption unit 107, and is respectively used for vacuum-pumping and adsorbing the membrane electrode upper frame 106, the membrane electrode lower frame 104 and the membrane electrode CCM 105.
Further, a first vacuum-pumping interface 102a, a second vacuum-pumping interface 102b, a frame adsorption region 103a and a CCM adsorption region 103b are arranged on the lower frame adsorption unit 101, the frame adsorption region 103a and the CCM adsorption region 103b are isolated by an isolation gasket 110, and the area of the frame adsorption region 103a is larger than the overall dimension of the lower frame 104 of the membrane electrode and smaller than the overall dimension of the upper frame 106 of the membrane electrode; the first vacuumizing interface 102a is communicated with the frame adsorption area 103a and is used for adsorbing an upper frame 106 of the membrane electrode and a lower frame 104 of the membrane electrode; the second vacuumizing interface 102b is communicated with the CCM adsorption region 103b and is used for adsorbing the membrane electrode CCM 105; the combination chamber is connected with the frame adsorption area 103a and the first vacuum pumping interface 102a of the lower frame adsorption unit 101.
Further, the outline dimension edge of the frame suction region 103a is 2-20mm larger than the outline dimension edge of the CCM suction region 103 b.
Further, the height of the sealing gasket 109 is 1-10mm larger than the surface of the lower frame adsorption unit 101, the circumference of the sealing gasket 109 is enough to surround the membrane electrode upper frame 106 and the membrane electrode lower frame 104, and the material of the sealing gasket 109 is selected from but not limited to ethylene propylene diene monomer or silica gel.
Compared with the prior art, the utility model has the following advantages:
(1) according to the utility model, the CCM and frame vacuum adsorption regions are arranged in different regions aiming at the characteristic that the difference of the thickness, the hardness and other characteristics of the frame membrane and the CCM proton membrane is large, and the frame membrane and the proton membrane are adsorbed by adopting different vacuum degrees, so that the excessive adsorption deformation of the ultrathin and soft proton membrane is reduced, and the risk of lamination wrinkles is reduced;
(2) the air quantity in the narrow cavity formed by combining the upper and lower frame adsorption units and the sealing gasket is limited, so that the air between the upper and lower frame membranes can be quickly and thoroughly pumped;
(3) after the upper frame covers and falls to the vacuum adsorption area of the lower frame adsorption unit, residual air in a gap between films of the upper frame and the lower frame can be further extracted by utilizing the characteristic that the upper frame and the lower frame have the same size, so that the risk of air bubbles mixed during the attachment of the frames is reduced;
(4) the frame attaching method has a simple and reliable structure, can be used for manually, semi-automatically and automatically attaching the frame of the membrane electrode of the fuel cell, can reduce the attaching defects of the frame, and is worthy of popularization and application.
[ description of the drawings ]
FIG. 1 is a schematic view of the structures of the upper and lower frames and CCM of the membrane electrode of the present invention;
FIG. 2 is a schematic view of the structure of the lower frame adsorption unit of the present invention;
FIG. 3 is a schematic view of the structure of the suction lower frame of the present invention;
FIG. 4 is a schematic structural view of attaching a CCM after adsorbing a lower frame according to the present invention;
FIG. 5 is a schematic structural view of the upper frame after the CCM is attached;
FIG. 6 is a schematic structural diagram of a lower frame adsorption unit in an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a suction lower frame according to an embodiment of the present invention;
FIG. 8 is a schematic view of a bonded CCM according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of a conformable upper rim in accordance with embodiments of the present invention;
FIG. 10 is a schematic structural view of the attaching device according to the present invention for attaching the upper and lower frames;
FIG. 11 is a schematic structural view of a fourth most part of the attaching device of the present invention;
in the figure: 101. the device comprises a lower frame adsorption unit 102a, a first vacuumizing interface 102b, a second vacuumizing interface 103a, a frame adsorption area 103b, a CCM adsorption area 104, a membrane electrode lower frame 105, a membrane electrode CCM 106, a membrane electrode upper frame 107, an upper frame adsorption unit 108, a vacuum pipeline 109, a sealing gasket 110 and an isolation sealing gasket.
[ detailed description of the utility model ]
The utility model provides a vacuum laminating device for a membrane electrode frame of a fuel cell, which comprises a lower frame adsorption unit 101, an upper frame adsorption unit 107, a sealing gasket 109 and a vacuumizing pipeline, wherein the lower frame adsorption unit 101 is provided with two independent vacuum adsorption areas which are a frame adsorption area 103a and a CCM adsorption area 103b respectively, the frame adsorption area 103a is used for adsorbing an upper frame 106 of a membrane electrode and a lower frame 104 of the membrane electrode, and the CCM adsorption area 103b is used for adsorbing a CCM105 of the membrane electrode; the upper frame adsorption unit 107 is provided with an independent vacuum adsorption area for adsorbing the upper frame 106 of the membrane electrode; the sealing gasket 109 is fixed on the surface of the lower frame adsorption unit 101, and the upper frame adsorption unit 107, the sealing gasket 109 and the lower frame adsorption unit 101 are combined to form a combined chamber for isolating the outside; the vacuumizing pipeline is respectively connected with the lower frame adsorption unit 101 and the upper frame adsorption unit 107, and is respectively used for vacuumizing and adsorbing the membrane electrode upper frame 106, the membrane electrode lower frame 104 and the membrane electrode CCM 105.
In the vacuum laminating device for the membrane electrode frame of the fuel cell, a first vacuumizing interface 102a, a second vacuumizing interface 102b, a frame adsorption area 103a and a CCM adsorption area 103b are arranged on a lower frame adsorption unit 101, the frame adsorption area 103a and the CCM adsorption area 103b are isolated by an isolation sealing gasket 110, and the area of the frame adsorption area 103a is larger than the overall dimension of a lower frame 104 of the membrane electrode and smaller than the overall dimension of an upper frame 106 of the membrane electrode; the first vacuumizing interface 102a is communicated with the frame adsorption area 103a and is used for adsorbing an upper frame 106 of the membrane electrode and a lower frame 104 of the membrane electrode; the second vacuumizing interface 102b is communicated with the CCM adsorption area 103b and is used for adsorbing the membrane electrode CCM 105; the combination chamber is connected with the frame adsorption area 103a and the first vacuum pumping interface 102a of the lower frame adsorption unit 101. The outline dimension of the frame suction region 103a is 2 to 20mm larger than the outline dimension of the CCM suction region 103 b. The height of the sealing gasket 109 is 1-10mm larger than the surface of the lower frame adsorption unit 101, the circumference of the sealing gasket 109 is enough to surround the upper frame 106 of the membrane electrode and the lower frame 104 of the membrane electrode, and the material of the sealing gasket 109 is selected from but not limited to ethylene propylene diene monomer or silica gel.
As shown in fig. 1 to 5, the utility model provides a vacuum bonding method for a membrane electrode frame of a fuel cell, which comprises the following steps:
1) preparing an upper membrane electrode frame 106, a membrane electrode CCM105 and a lower membrane electrode frame 104, wherein the overall dimension of the upper membrane electrode frame 106 is larger than that of the lower membrane electrode frame 104, and one side of a membrane of the frame is provided with a glue layer for bonding;
2) arranging a lower frame adsorption unit 101, wherein a first vacuumizing interface 102a, a second vacuumizing interface 102b, a frame adsorption region 103a and a CCM adsorption region 103b are arranged on the lower frame adsorption unit 101, the frame adsorption region 103a and the CCM adsorption region 103b are isolated by an isolation sealing gasket 110, and the area of the frame adsorption region 103a is larger than the overall dimension of a lower frame 104 of the membrane electrode and smaller than the overall dimension of an upper frame 106 of the membrane electrode; the first vacuumizing interface 102a is communicated with the frame adsorption area 103 a; the second vacuumizing interface 102b is communicated with the CCM adsorption area 103b and is used for adsorbing the membrane electrode CCM 105;
3) the membrane electrode lower frame 104 is placed on the frame adsorption area 103a, the rubber surface of the membrane electrode lower frame 104 faces upwards, the first vacuumizing interface 102a is opened to pump air away, and the part, which is not covered by the membrane electrode lower frame 104, in the frame adsorption area 103a is used for adsorbing the membrane electrode lower frame 104;
4) placing the membrane electrode CCM105 in a CCM adsorption area 103b of the lower frame adsorption unit 101, opening a second vacuumizing interface 102b, and carrying out vacuum adsorption positioning on the membrane electrode CCM 105; when the membrane electrode upper frame 106 is prepared, the external dimension of the membrane electrode upper frame is enough to cover the vacuum adsorption area of the upper frame adsorption unit 107 and is larger than the external dimension of the membrane electrode lower frame 104, and the membrane electrode upper frame can cover all the area of the vacuum adsorption area of the lower frame adsorption unit;
5) fixing a sealing gasket 109 on the surface of the lower frame adsorption unit 101, placing the upper frame 106 of the membrane electrode in an adsorption area of the upper frame adsorption unit 107 with the glue surface facing upwards, opening and adjusting the vacuum degree of an interface of a vacuum pipeline 108 to be larger than that of a first vacuumizing interface 102a, and adsorbing and positioning the upper frame 106 of the membrane electrode; then, the upper frame adsorption unit 107 is turned over by 180 degrees, so that the adhesive surface of the upper frame 106 of the membrane electrode faces downwards, and after the upper frame 106 of the membrane electrode is aligned with the lower frame 104 of the membrane electrode, the upper frame adsorption unit 107 is stacked on the sealing gasket 109 of the lower frame adsorption unit 101;
6) preliminarily extracting air between the upper frame 106 and the lower frame 104 of the membrane electrode, and extracting air in gaps between the upper frame 106 and the lower frame 104 of the membrane electrode;
7) and (3) closing the first vacuumizing interface 102a and the second vacuumizing interface 102b of the lower frame adsorption unit 101, introducing air, reducing the vacuum degree, moving the upper frame adsorption unit 107 away to enable the membrane electrode lower frame 104, the membrane electrode CCM105 and the membrane electrode upper frame 106 to be bonded into a whole, and cutting according to the final shape and size of the membrane electrode to finish the frame bonding manufacture.
The utility model is further illustrated below with reference to specific examples:
as shown in fig. 6 to 10, the present invention provides a vacuum bonding method for a membrane electrode frame of a fuel cell:
firstly, preparing an upper membrane electrode frame 106, a membrane electrode CCM105 and a lower membrane electrode frame 104, wherein the frame materials comprise plastic films such as PET, PI, PEN and the like, the thickness of the plastic films is 15-150 micrometers, the outline dimension of the upper frame is larger than that of the lower frame, and one side of the frame film is provided with a glue layer for bonding; as shown in fig. 6, a lower frame adsorption unit 101 is arranged, and has a first vacuum-pumping interface 102a and a second vacuum-pumping interface 102b, and has two spaced vacuum adsorption areas, namely a frame adsorption area 103a and a CCM adsorption area 103b, which are separated by an isolation seal 110, and the area of the frame adsorption area 103a is larger than the outer dimension of the lower frame and smaller than the outer dimension of the upper frame; the first vacuum interface 102a is communicated with the frame adsorption area 103a and is used for vacuum adsorption of the upper frame and the lower frame; the outline dimension of the frame adsorption area is about 2-20mm larger than that of the CCM adsorption area; the second vacuum interface 102b is communicated with the CCM adsorption area 103b and is used for adsorbing CCM;
as shown in fig. 7, the membrane electrode lower frame 104 is placed on the frame adsorption region 103a with the frame glue facing upward. As shown in fig. 8, the membrane electrode CCM105 is placed in the CCM adsorption area 103b of the lower frame adsorption unit 101, the second vacuumizing interface 102b is opened, the membrane electrode CCM105 is positioned by vacuum adsorption, and the vacuum suction force is adjusted to avoid CCM adsorption deformation and wrinkles; preparing an upper frame 106 of the membrane electrode, wherein the external dimension of the upper frame is enough to cover the vacuum adsorption area of an adsorption unit 107 of the upper frame, and the external dimension of the upper frame is larger than that of a lower frame, and the upper frame can cover all the area of the vacuum adsorption area of the adsorption unit of the lower frame; as shown in fig. 9, a sealing gasket 109 is fixed on the surface of the lower frame adsorption unit 101, the height of the sealing gasket is 1-10mm greater than the surface of the adsorption unit, and the circumference is long enough to surround the upper and lower frames; the sealing gasket material comprises rubber such as ethylene propylene diene monomer, silica gel and the like; placing the upper frame 106 of the membrane electrode in an adsorption area of an upper frame adsorption unit 107 with the glue surface facing upwards, starting and adjusting the vacuum degree of an interface of a vacuum pipeline 108 to be larger than that of a first vacuumizing interface 102a, and adsorbing and positioning the upper frame; then the upper frame vacuum adsorption unit 107 is turned over by 180 degrees, so that the adhesive surface of the upper frame 106 of the membrane electrode faces downwards, and after the upper frame and the lower frame are aligned, the upper frame adsorption unit 107 is stacked on the sealing pad of the lower frame adsorption unit 101;
the upper frame adsorption unit, the sealing gasket 109 and the lower frame adsorption unit are combined to form a cavity for isolating the outside, and are only connected with the frame adsorption area 103a and the first vacuumizing interface 102a of the lower frame adsorption unit; because the vacuum degree of the upper frame adsorption unit 107 is greater than that of the lower frame adsorption unit 101, the gravity of the upper frame can be overcome, the upper frame is kept suspended and does not fall off, and air between the upper frame 106 and the lower frame 104 of the membrane electrode in the combined cavity is extracted by utilizing the adsorption area of the frame adsorption area 103a which is not covered by the lower frame 104 of the membrane electrode;
after the preliminary air extraction between the upper frame and the lower frame is finished, closing the upper frame adsorption unit for vacuumizing and introducing air, so that the upper frame 106 of the membrane electrode is adsorbed by the lower frame adsorption unit 101 to fall on the lower frame 104 of the membrane electrode, and further extracting air in a gap between the upper frame 106 of the membrane electrode and the lower frame 104 of the membrane electrode by utilizing an adsorption area of the frame adsorption area 103a which is not covered by the lower frame 104 of the membrane electrode;
and (3) closing the vacuumizing system of the lower frame adsorption unit 101, introducing air, reducing the vacuum degree, removing the upper frame adsorption unit 107, attaching, cutting according to the final shape of the membrane electrode to finish the manufacturing, wherein the attaching effect is shown in figure 10.
The attaching device of the vacuum attaching method for the membrane electrode frame of the fuel cell comprises four major parts as shown in fig. 11, wherein the first part is a lower frame adsorption unit which is provided with two independent vacuum adsorption areas for respectively adsorbing the upper frame, the lower frame and the CCM. The second part is an upper frame adsorption unit which is provided with an independent vacuum adsorption area for adsorbing the upper frame. The third part is used for combining a sealing gasket for sealing the chamber. The fourth part is three vacuum-pumping pipelines which are respectively used for vacuum-pumping and adsorbing the upper frame, the lower frame and the CCM.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.

Claims (4)

1. A vacuum laminating device for a membrane electrode frame of a fuel cell is characterized in that: the membrane electrode assembly comprises a lower frame adsorption unit (101), an upper frame adsorption unit (107), a sealing gasket (109) and a vacuumizing pipeline, wherein the lower frame adsorption unit (101) is provided with two independent vacuum adsorption areas which are a frame adsorption area (103a) and a CCM adsorption area (103b), the frame adsorption area (103a) is used for adsorbing an upper frame (106) and a lower frame (104) of a membrane electrode, and the CCM adsorption area (103b) is used for adsorbing a CCM (105) of the membrane electrode; the upper frame adsorption unit (107) is provided with an independent vacuum adsorption area for adsorbing the upper frame (106) of the membrane electrode; the sealing gasket (109) is fixed on the surface of the lower frame adsorption unit (101), and the upper frame adsorption unit (107), the sealing gasket (109) and the lower frame adsorption unit (101) are combined to form a combined chamber for isolating the outside; the vacuum-pumping pipeline is respectively connected with the lower frame adsorption unit (101) and the upper frame adsorption unit (107), and is respectively used for vacuum-pumping and adsorbing the membrane electrode upper frame (106), the membrane electrode lower frame (104) and the membrane electrode CCM (105).
2. The fuel cell membrane electrode frame vacuum bonding apparatus according to claim 1, wherein: the lower frame adsorption unit (101) is provided with a first vacuumizing interface (102a), a second vacuumizing interface (102b), a frame adsorption region (103a) and a CCM adsorption region (103b), the frame adsorption region (103a) is isolated from the CCM adsorption region (103b) through an isolation sealing gasket (110), and the area of the frame adsorption region (103a) is larger than the overall dimension of the lower frame (104) of the membrane electrode and smaller than the overall dimension of the upper frame (106) of the membrane electrode; the first vacuumizing interface (102a) is communicated with the frame adsorption area (103a) and is used for adsorbing an upper frame (106) and a lower frame (104) of the membrane electrode; the second vacuumizing interface (102b) is communicated with the CCM adsorption area (103b) and is used for adsorbing the membrane electrode CCM (105); the combined chamber is connected with a frame adsorption area (103a) of a lower frame adsorption unit (101) and a first vacuumizing interface (102 a).
3. The fuel cell membrane electrode frame vacuum bonding apparatus according to claim 1, wherein: the outline dimension edge of the frame adsorption area (103a) is 2-20mm larger than the outline dimension edge of the CCM adsorption area (103 b).
4. The fuel cell membrane electrode frame vacuum bonding apparatus according to claim 1, wherein: the height of the sealing gasket (109) is 1-10mm larger than the surface of the lower frame adsorption unit (101), the circumference of the sealing gasket (109) is enough to surround the upper frame (106) and the lower frame (104) of the membrane electrode, and the material of the sealing gasket (109) is selected from but not limited to ethylene propylene diene monomer or silica gel.
CN202122560173.7U 2021-10-22 2021-10-22 Vacuum laminating device for membrane electrode frame of fuel cell Active CN216213567U (en)

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CN202122560173.7U CN216213567U (en) 2021-10-22 2021-10-22 Vacuum laminating device for membrane electrode frame of fuel cell

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CN202122560173.7U CN216213567U (en) 2021-10-22 2021-10-22 Vacuum laminating device for membrane electrode frame of fuel cell

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