Fuel cell membrane electrode vacuum hot pressing device and working method thereof

Abstract

The invention belongs to the technical field of conveying, and particularly relates to equipment related to membrane electrode pressing, in particular to a fuel cell membrane electrode vacuum hot pressing device and a working method thereof. The fuel cell membrane electrode vacuum hot-pressing device comprises a vacuum hot-pressing device body and a hot-pressing plate, wherein the vacuum hot-pressing device body comprises a hot-pressing groove and a vacuum pump; a communicating pipe communicating with the two ends of the bottom face of the hot pressing plate is arranged at the top of the hot pressing plate. The communicating pipes are arranged on the two sides of the hot-pressing plate, so that the uniformity of negative pressure distribution in the hot-pressing groove is improved, a dead zone is prevented from being formed between the hot-pressing groove and the hot-pressing plate, the uniformity of pressure distribution in the hot-pressing groove is ensured, the defects of wrinkles or delamination and the like during membrane electrode attachment are avoided, the uniformity of adhesion is improved, and meanwhile, the production efficiency is improved. And compared with a design scheme of double-side vacuum pumping, the bonding uniformity is ensured, and meanwhile, the overall equipment cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the field of transportation technology, and specifically relates to equipment for membrane electrode pressing, and more particularly to a fuel cell membrane electrode vacuum hot pressing device and a working method thereof. Background Art

[0002] Membrane electrode is the core component of hydrogen fuel cells and the core site for multiple material transfers and electrochemical reactions.

[0003] In related technologies, a single-sided vacuum design is commonly used, that is, a vacuum port is set on one side of the hot pressing tank and connected to a vacuum pump for extraction. However, this design has inherent defects: due to the relatively narrow gap between the hot pressing plate and the hot pressing tank, the airflow easily forms turbulence in the narrow gap during vacuuming, resulting in uneven pressure distribution inside the hot pressing tank. As a result, the gas on the side away from the vacuum port cannot be effectively extracted, forming a dead zone and residual bubbles. This leads to uneven force on the left and right sides of the membrane electrode during hot pressing, affecting the uniformity of bonding.

[0004] If a double-sided vacuum design is adopted, independent vacuum channels, seals and valve systems need to be set up on both sides of the hot pressing tank, which will lead to a significant increase in equipment manufacturing costs.

[0005] Therefore, how to solve the uneven bonding of the membrane electrode edges caused by unilateral vacuuming is a technical problem that needs to be solved urgently.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the Invention

[0007] The embodiments of the present disclosure at least provide a fuel cell membrane electrode vacuum hot pressing device and a working method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a fuel cell membrane electrode vacuum hot pressing device, comprising: Vacuum hot pressing device body; A hot pressing plate, which is arranged above the vacuum hot pressing device body; Wherein, the vacuum hot pressing device body includes: A hot pressing tank is provided on the top of the vacuum hot pressing device body; a vacuum pump connected to a vacuum port on one side of the hot pressing tank; The top of the hot pressing plate is provided with a connecting pipe connected to both ends of the bottom surface of the hot pressing plate; a control module configured to, after the membrane electrode is placed in the hot pressing tank, control a vacuum pump to evacuate the hot pressing tank and connect two sides of the hot pressing tank through a connecting pipe to avoid forming a dead zone between the hot pressing tank and the hot pressing plate; Wherein, one end of the connecting pipe is arranged close to the vacuum port.

[0009] In an optional embodiment, the number of the connecting pipes is two; Two connecting pipes are respectively arranged on two opposite sides of the hot pressing plate; Furthermore, the connecting pipe is arranged to be inclined outward.

[0010] In an optional embodiment, the vacuum hot pressing device body further includes: Top plate, heating plate and bottom plate; The top plate is arranged opposite to the bottom plate; The heating plate is arranged between the top plate and the bottom plate; The hot pressing groove is opened on the top surface of the top plate.

[0011] In an optional embodiment, the heating plate is provided with a plurality of insertion holes for inserting heating tubes; A plurality of the jacks are arranged side by side at equal intervals in the heating plate.

[0012] In an optional embodiment, an air passage communicating with the vacuum port is provided on one side of the heating plate; A vacuum pumping valve and a vacuum exhaust valve communicating with the air passage are provided on one side of the heating plate.

[0013] In an optional embodiment, the vacuum hot pressing device body further includes: A vacuum suction plate, which is covered in the hot pressing tank; Vacuum generator; The heating plate is further provided with an adsorption pipe connected to the vacuum suction plate; Wherein, the vacuum generator is arranged on the outside of the heating plate and is communicated with the adsorption pipe.

[0014] In an optional embodiment, the vacuum generator is further connected to a first adsorption ball valve and a second adsorption ball valve; Before controlling the vacuum pump to evacuate the hot pressing tank, the control module is further configured to: control the first adsorption ball valve and the second adsorption ball valve to connect the vacuum generator with the outside to adsorb the membrane electrode covered on the vacuum suction plate.

[0015] In an optional embodiment, the bottom surface of the vacuum suction plate is provided with a flow balancing groove; The flow balancing trough is in communication with the adsorption pipe; The top surface of the vacuum suction plate is provided with a plurality of adsorption pinholes connected with corresponding flow balancing grooves.

[0016] In an optional embodiment, an annular groove is further provided around the hot pressing groove; A sealing ring is provided in the annular groove; When the hot pressing plate is covered in the hot pressing tank, the narrow gap between the hot pressing plate and the hot pressing tank is sealed by the sealing ring.

[0017] In a second aspect, the present disclosure also provides a working method for the above-mentioned fuel cell membrane electrode vacuum hot pressing device, the working method comprising: Controlling the vacuum hot pressing device body to heat to a preset temperature through the control module; The lower mold of the membrane electrode is set in the hot pressing tank, and after the hot pressing plate is covered in the hot pressing tank, the control module controls the vacuum pump to evacuate the hot pressing tank and connects the two sides of the hot pressing tank through the connecting pipe; The control module controls the flat press to press the vacuum hot pressing device body and the hot pressing plate.

[0018] The beneficial effect of the present invention is that the fuel cell membrane electrode vacuum hot pressing device and its working method improve the uniformity of negative pressure distribution in the hot pressing tank by arranging connecting pipes on both sides of the hot pressing plate, so as to avoid the formation of a dead zone between the hot pressing tank and the hot pressing plate, thereby ensuring the uniformity of pressure distribution in the hot pressing tank, avoiding defects such as wrinkles or delamination when the membrane electrode is bonded, and improving the uniformity of bonding. At the same time, there is no need to add additional exhaust channels and sealing components. Compared with the double-sided vacuum design, while ensuring the uniformity of bonding, the overall equipment cost is reduced.

[0019] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a fuel cell membrane electrode vacuum hot pressing device provided in an embodiment of the present disclosure; Figure 2 A cross-sectional view of a fuel cell membrane electrode vacuum hot pressing device provided in an embodiment of the present disclosure; Figure 3 A cross-sectional view from another perspective of the fuel cell membrane electrode vacuum hot pressing device provided by an embodiment of the present disclosure; Figure 4 A schematic diagram of a partial structure of a fuel cell membrane electrode vacuum hot pressing device provided in an embodiment of the present disclosure; Figure 5 A flowchart of the working method of the fuel cell membrane electrode vacuum hot pressing device provided in an embodiment of the present disclosure; Figure 6 This is a schematic diagram of the electrical control principle of the fuel cell membrane electrode vacuum hot pressing device provided in an embodiment of the present disclosure.

[0023] In the figure: 100, vacuum hot pressing device body; 110, hot pressing groove; 111, ring groove; 112, sealing ring; 120, vacuum port; 121, air duct; 122, vacuum valve; 123, vacuum exhaust valve; 130, top plate; 140, heating plate; 141, jack; 150, bottom plate; 160, vacuum suction plate; 161, flow equalizing groove; 162, adsorption pinhole; 170, vacuum generator; 171, adsorption pipe; 172, first adsorption ball valve; 173, second adsorption ball valve; 200, hot pressing plate; 210, connecting pipe. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] In this document, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or that a third component may be interposed between the first component and the second component. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe technical content.

[0026] As used herein, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." when following a list of elements modify the entire list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0028] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an" and "the" may also be intended to include plural forms, unless this document clearly indicates otherwise. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0029] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0030] After research, it was found that the upper and lower surfaces of the membrane electrode body need to be covered with a frame film, and then pressed together by a flat press to complete the preparation of the membrane electrode. However, the membrane electrode prepared by pressing only with a flat press has many wrinkles. In order to reduce wrinkles, the related technology uses vacuum adsorption to adsorb the frame film. In actual use, it was found that the design of single-sided vacuuming easily forms turbulence in the narrow gap during vacuuming, resulting in uneven pressure distribution inside the hot pressing tank, which leads to the inability to effectively extract the gas on the side away from the vacuum port, forming a dead zone and residual bubbles. The design of double-sided vacuuming will lead to an increase in the overall equipment cost, so how to balance the cost and the effect of eliminating wrinkles is currently an urgent problem to be solved.

[0031] Based on the above research, the embodiments of the present disclosure provide a fuel cell membrane electrode vacuum hot pressing device and its working method. By setting connecting pipes on both sides of the hot pressing plate, the double-sided vacuuming effect is achieved while reducing the cost increase.

[0032] The defects in the above solutions are the results obtained by the inventors after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure in this article should be the contributions made by the inventors to the present disclosure during the disclosure process.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0035] See also Figure 1 and Figure 2 , at least one embodiment provides a fuel cell membrane electrode vacuum hot pressing device, comprising: a vacuum hot pressing device body 100; a hot pressing plate 200, which is arranged above the vacuum hot pressing device body 100; wherein the vacuum hot pressing device body 100 comprises: a hot pressing tank 110, which is arranged at the top of the vacuum hot pressing device body 100; a vacuum pump, which is connected to the vacuum extraction port 120 on one side of the hot pressing tank 110; a connecting pipe 210 connected to both ends of the bottom surface of the hot pressing plate 200 is provided on the top of the hot pressing plate 200; a control module, which is configured to, after the membrane electrode is placed in the hot pressing tank 110, control the vacuum pump to vacuum the hot pressing tank 110, and connect the two sides of the hot pressing tank 110 through the connecting pipe 210 to avoid the formation of a dead zone between the hot pressing tank 110 and the hot pressing plate 200.

[0036] One end of the connecting pipe is disposed close to the vacuum port, thereby connecting the two sides of the hot pressing tank 110 .

[0037] Among them, the electrical control principle diagram of the fuel cell membrane electrode vacuum hot pressing device is as follows Figure 6 shown.

[0038] By arranging connecting pipes 210 on both sides of the hot pressing plate 200, the uniformity of the negative pressure distribution in the hot pressing tank 110 is improved, thereby ensuring the uniformity of the pressure distribution in the hot pressing tank 110, so as to avoid the formation of a dead zone between the hot pressing tank and the hot pressing plate, and avoid wrinkles or delamination defects when the membrane electrode is bonded, thereby improving the uniformity of bonding. At the same time, there is no need to add additional exhaust channels and sealing components. Compared with the double-sided vacuum design, while ensuring the uniformity of bonding, the overall equipment cost is reduced.

[0039] Please continue reading Figure 1 The number of the connecting pipes 210 is two; the two connecting pipes 210 are respectively arranged on opposite sides of the hot pressing plate 200; and the connecting pipes 210 are arranged to be inclined outward.

[0040] Among them, the material of the hot pressing plate 200 is aluminum plate. After multiple hot pressings, a concave will appear in the middle of the aluminum plate. The two connecting tubes 210 are bent outward by external force, thereby bending the concave aluminum plate in the opposite direction, thereby ensuring the uniformity of the pressure distribution of the hot pressing plate 200 on each part of the hot pressing tank 110.

[0041] Please continue reading Figure 1 The vacuum hot pressing device body 100 also includes: a top plate 130, a heating plate 140 and a bottom plate 150; the top plate 130 and the bottom plate 150 are arranged opposite to each other; the heating plate 140 is arranged between the top plate 130 and the bottom plate 150; the hot pressing groove 110 is opened on the top surface of the top plate 130.

[0042] Specifically, see Figure 3 The heating plate 140 is provided with a plurality of insertion holes 141 for inserting heating tubes. The insertion holes 141 are arranged side by side at equal intervals within the heating plate 140. The spaced heating tubes ensure uniform surface temperature of the heating plate 140, thereby ensuring uniform melting of the thermoplastic resin between the membrane electrode layers and achieving bonding.

[0043] See also Figure 3 and Figure 4 The heating plate 140 has an air passage 121 on one side thereof, which is in communication with the vacuum port 120. A vacuum valve 122 and a vacuum exhaust valve 123 are also provided on one side of the heating plate 140, which are in communication with the air passage 121. The vacuum valve 122 and the vacuum exhaust valve 123 are used in conjunction with each other to switch the vacuum state of the hot pressing tank 110.

[0044] To avoid membrane electrode displacement during hot pressing, refer to Figure 2 and Figure 4 In a preferred embodiment, the vacuum hot pressing device body 100 further includes: a vacuum suction plate 160, which covers the hot pressing tank 110; a vacuum generator 170; and an adsorption pipe 171 connected to the vacuum suction plate 160 is further provided in the heating plate 140; wherein the vacuum generator 170 is provided on the outside of the heating plate 140 and is connected to the adsorption pipe 171.

[0045] The vacuum suction plate 160 and the vacuum generator 170 are connected through the adsorption pipe 171 to complete the adsorption of the membrane electrode, thereby ensuring that the membrane electrode will not deviate during subsequent hot pressing.

[0046] In a preferred embodiment, the bottom surface of the vacuum suction plate 160 is provided with a flow balancing groove 161, which is connected to the suction pipe 171. The top surface of the vacuum suction plate 160 is provided with multiple suction pinholes 162, which are connected to corresponding flow balancing grooves 161. The flow balancing grooves 161 evenly distribute the suction pressure across the entire vacuum suction plate 160, improving the uniformity of suction.

[0047] It should be noted that the flow balancing groove 161 is in a grid shape, each air channel is connected to each other, and the adsorption pinhole 162 is connected to the corresponding air channel.

[0048] Please continue reading Figure 2 and Figure 4 The vacuum generator 170 is also connected to a first adsorption ball valve 172 and a second adsorption ball valve 173; before controlling the vacuum pump to evacuate the hot pressing tank 110, the control module is also configured to: control the first adsorption ball valve 172 and the second adsorption ball valve 173 to connect the vacuum generator 170 to the outside to adsorb the membrane electrode covered on the vacuum suction plate 160.

[0049] See also Figure 1 and Figure 4 The hot pressing groove 110 is also provided with an annular groove 111 around it; a sealing ring 112 is provided in the annular groove 111; when the hot pressing plate 200 is covered in the hot pressing groove 110, the narrow gap between the hot pressing plate 200 and the hot pressing groove 110 is sealed by the sealing ring 112.

[0050] When the hot pressing plate 200 is covered on the hot pressing tank 110, the gap between the hot pressing plate 200 and the hot pressing tank 110 is sealed by the sealing ring 112. When the vacuum pump evacuates the hot pressing tank 110, the reliability of the seal between the hot pressing plate 200 and the hot pressing tank 110 can be ensured.

[0051] See also Figure 5 The present disclosure also provides a working method for the above-mentioned fuel cell membrane electrode vacuum hot pressing device, the working method comprising: S110: Controlling the vacuum hot pressing device body to heat to a preset temperature through the control module.

[0052] S120: After the lower mold of the membrane electrode is set in the hot pressing tank and the hot pressing plate is covered in the hot pressing tank, the control module controls the vacuum pump to evacuate the hot pressing tank and connects the two sides of the hot pressing tank through a connecting pipe.

[0053] S130: The control module controls the flat press to press the vacuum hot pressing device body and the hot pressing plate.

[0054] In summary, the present invention provides a fuel cell membrane electrode vacuum hot pressing device and a working method thereof, wherein the fuel cell membrane electrode vacuum hot pressing device includes: a vacuum hot pressing device body 100; a hot pressing plate 200, which is arranged above the vacuum hot pressing device body 100; wherein the vacuum hot pressing device body 100 includes: a hot pressing tank 110, which is arranged at the top of the vacuum hot pressing device body 100; a vacuum pump, which is connected to the vacuum extraction port 120 on one side of the hot pressing tank 110; the top of the hot pressing plate 200 is provided with a connecting pipe 210 connected to both ends of the bottom surface of the hot pressing plate 200; a control module, which is configured to, after the membrane electrode is placed in the hot pressing tank 110, control the vacuum pump to vacuum the hot pressing tank 110, and connect the two sides of the hot pressing tank 110 through the connecting pipe 210 to avoid the formation of a dead zone between the hot pressing tank 110 and the hot pressing plate 200. By arranging connecting pipes 210 on both sides of the hot pressing plate 200, the uniformity of the negative pressure distribution in the hot pressing tank 110 is improved, thereby ensuring the uniformity of the pressure distribution in the hot pressing tank 110, so as to avoid the formation of a dead zone between the hot pressing tank and the hot pressing plate, and avoid wrinkles or delamination defects when the membrane electrode is bonded, thereby improving the uniformity of bonding. At the same time, there is no need to add additional exhaust channels and sealing components. Compared with the double-sided vacuum design, while ensuring the uniformity of bonding, the overall equipment cost is reduced.

[0055] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0056] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used herein unless expressly indicated herein. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0057] Spatially relative terms, such as "inside," "outside," "below," "beneath," "down," "above," "on," etc., may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientations depicted in the figures, spatially relative terms may be intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as being "below" or "below" other elements or features will be oriented to be "above" the other elements or features. Thus, the example term "below" may encompass both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0058] In the above discussion, unless otherwise indicated, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0059] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A fuel cell membrane electrode vacuum hot pressing device, characterized in that: include: Vacuum hot pressing device body (100); A hot pressing plate (200) disposed above the vacuum hot pressing device body (100); Wherein, the vacuum hot pressing device body (100) comprises: A hot pressing tank (110) is provided on the top of the vacuum hot pressing device body (100); a vacuum pump connected to a vacuum port (120) on one side of the hot pressing tank (110); A connecting pipe (210) is provided on the top of the hot pressing plate (200) and is connected to both ends of the bottom surface of the hot pressing plate (200); A control module is configured to: after placing the membrane electrode into the hot pressing tank (110), control the vacuum pump to evacuate the hot pressing tank (110), and connect the two sides of the hot pressing tank (110) through a connecting pipe (210) to avoid forming a dead zone between the hot pressing tank (110) and the hot pressing plate (200); One end of the connecting pipe (210) is located close to the vacuum port (120).

2. The fuel cell membrane electrode vacuum hot pressing device according to claim 1, characterized in that: The number of the connecting pipes (210) is two; Two connecting pipes (210) are respectively arranged on two opposite sides of the hot pressing plate (200); Furthermore, the connecting pipe (210) is arranged to be inclined outward.

3. The fuel cell membrane electrode vacuum hot pressing device according to claim 1, characterized in that: The vacuum hot pressing device body (100) further includes: A top plate (130), a heating plate (140), and a bottom plate (150); The top plate (130) and the bottom plate (150) are arranged opposite to each other; The heating plate (140) is arranged between the top plate (130) and the bottom plate (150); The hot pressing groove (110) is opened on the top surface of the top plate (130).

4. The fuel cell membrane electrode vacuum hot pressing device according to claim 3, characterized in that: The heating plate (140) is provided with a plurality of insertion holes (141) for inserting heating tubes; A plurality of the jacks (141) are arranged side by side at equal intervals in the heating plate (140).

5. The fuel cell membrane electrode vacuum hot pressing device according to claim 3, characterized in that: An air passage (121) communicating with the vacuum port (120) is provided on one side of the heating plate (140); A vacuum pumping valve (122) and a vacuum exhaust valve (123) in communication with the air passage (121) are provided on one side of the heating plate (140).

6. The fuel cell membrane electrode vacuum hot pressing device according to claim 3, characterized in that: The vacuum hot pressing device body (100) further includes: A vacuum suction plate (160) covering the hot pressing tank (110); Vacuum generator (170); The heating plate (140) is further provided with an adsorption pipe (171) in communication with the vacuum suction plate (160); The vacuum generator (170) is arranged outside the heating plate (140) and is in communication with the adsorption pipe (171).

7. The fuel cell membrane electrode vacuum hot pressing device according to claim 6, characterized in that: The vacuum generator (170) is also connected to a first adsorption ball valve (172) and a second adsorption ball valve (173); Before controlling the vacuum pump to evacuate the hot pressing tank (110), the control module is further configured to control the first adsorption ball valve (172) and the second adsorption ball valve (173) to connect the vacuum generator (170) to the outside, thereby adsorbing the membrane electrode covered on the vacuum suction plate (160).

8. The fuel cell membrane electrode vacuum hot pressing device according to claim 7, characterized in that: The bottom surface of the vacuum suction plate (160) is provided with a flow balancing groove (161); The flow balancing groove (161) is in communication with the adsorption pipe (171); The top surface of the vacuum suction plate (160) is provided with a plurality of adsorption pinholes (162) that are in communication with corresponding flow balancing grooves (161).

9. The fuel cell membrane electrode vacuum hot pressing device according to claim 8, characterized in that: The hot pressing groove (110) is further provided with an annular groove (111) around its periphery; A sealing ring (112) is provided in the annular groove (111); When the hot pressing plate (200) is covered in the hot pressing groove (110), the narrow gap between the hot pressing plate (200) and the hot pressing groove (110) is sealed by the sealing ring (112).

10. A working method applied to the fuel cell membrane electrode vacuum hot pressing device according to claim 1, characterized in that: The working method comprises: Controlling the vacuum hot pressing device body (100) to heat to a preset temperature through the control module; The lower mold of the membrane electrode is arranged in the hot pressing tank (110), and after the hot pressing plate (200) is covered in the hot pressing tank (110), the control module controls the vacuum pump to evacuate the hot pressing tank (110), and connects the two sides of the hot pressing tank (110) through the connecting pipe (210); The control module controls the flat press to press the vacuum hot pressing device body (100) and the hot pressing plate (200).

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