CN221008996U - Hot press device - Google Patents

Abstract

A hot press device belongs to the technical field of hot press equipment. The hot pressing device comprises a cooling piece and two oppositely arranged hot pressing plates; one side of one hot pressing plate facing the other hot pressing plate is a complete plate and is provided with a first plane, and the side of the one hot pressing plate facing away from the other hot pressing plate is provided with a cooling piece, so that the first plane is provided with a cooling area corresponding to the position of the cooling piece and a heating area positioned outside the cooling area; when the two hot pressing plates are utilized to carry out hot pressing on the membrane electrode, the membrane electrode is positioned between the two hot pressing plates, the functional area is contacted with the cooling area, and the area to be heated is contacted with the heating area. The hot pressing device is utilized to hot press the membrane electrode, the cooling piece can be utilized to cool the functional area of the membrane electrode, the first plane formed by a finished plate is contacted with the membrane electrode, the probability of occurrence of indentation in the hot pressing process of the membrane electrode can be reduced, and the hot pressing quality is improved.

Description

Hot press device

Technical Field

The application relates to the technical field of hot pressing equipment, in particular to a hot pressing device.

Background

The membrane electrode typically includes a catalyst-coated membrane region (CCM region), and a frame of hot melt adhesive material disposed at the edge of the CCM region. In the process of preparing the fuel cell, the membrane electrode of the fuel cell needs to be subjected to hot-press lamination. In the hot-pressing lamination process, a heating flat plate opposite-pressing mode is generally adopted, and a membrane electrode to be hot-pressed is placed between two flat plates with heating functions. And starting the press machine, applying a certain pressure to the heating flat plate, and heating and pressing the membrane electrode frame to achieve the aim of frame lamination.

The frame material of the membrane electrode is usually a hot melt adhesive material, and the activity of the hot melt adhesive can be excited at a heating temperature of more than 120 ℃ to achieve the bonding effect. When the membrane electrode is heated and pressurized in the form of an integral heating plate, the CCM area of the membrane electrode is heated. The temperature of the CCM zone is substantially the same as the heater plate set temperature throughout the hot pressing process. However, the high temperature of 120 ℃ can bring about irreversible transformation to the coated catalyst in the CCM area, which finally leads to the reduction of the catalyst performance in the CCM area and influences the performance of the membrane electrode.

Disclosure of utility model

Based on the defects, the application provides a hot pressing device to partially or completely solve the problem of poor quality of the membrane electrode after hot pressing in the related art.

The application is realized in the following way:

An example of the present application provides a hot press apparatus for hot pressing a membrane electrode having a region to be heated and a functional region. The hot pressing device comprises a cooling piece and two oppositely arranged hot pressing plates; one side of one hot pressing plate facing the other hot pressing plate is a complete plate and is provided with a first plane, and the side of the one hot pressing plate facing away from the other hot pressing plate is provided with a cooling piece, so that the first plane is provided with a cooling area corresponding to the position of the cooling piece and a heating area positioned outside the cooling area; when the two hot pressing plates are utilized to carry out hot pressing on the membrane electrode, the membrane electrode is positioned between the two hot pressing plates, the functional area is contacted with the cooling area, and the area to be heated is contacted with the heating area.

In the implementation process, when the membrane electrode is hot-pressed, the membrane electrode can be placed between two hot-pressing plates, and the membrane electrode is heated and pressurized by using the two hot-pressing plates. Because the side of the hot pressing plate, which is away from the membrane electrode, is provided with the cooling piece, the cooling piece can cool the position of the hot pressing plate, which corresponds to the cooling piece, and the first plane of the side of the hot pressing plate, which is towards the membrane electrode, is provided with the cooling area, which corresponds to the position of the cooling piece. When the hot pressing plate is used for hot pressing the membrane electrode, the cooling area is in contact with the functional area of the membrane electrode, and the heating area outside the cooling area is in contact with the area to be heated of the membrane electrode, so that the temperature of the functional area can be reduced while hot pressing lamination is carried out on the area to be heated, and the performance of the membrane electrode after hot pressing lamination is improved.

And set up the cooling piece in the hot pressing board one side that deviates from the membrane electrode, can also avoid forming the gap in the one side of hot pressing board towards the membrane electrode when making first plane form the cooling region for the membrane electrode can contact with a complete board plane, reduces the probability that the membrane electrode produced the indentation in hot pressing laminating in-process, improves the quality of membrane electrode after the hot pressing.

In an alternative embodiment, the side of the hot-pressing plate facing away from the first plane is provided with a first mounting groove, which has groove side walls and groove bottom walls; the cooling piece is arranged in the first mounting groove, is connected with the groove bottom wall and is spaced from the groove side wall by a preset distance.

In the implementation process, the first mounting groove is formed in one side, away from the first plane, of the hot-pressing plate, and the cooling piece can be embedded in the first mounting groove. The cooling member is connected to the bottom wall of the first mounting groove, and the cooling member can cool the bottom wall connected to the cooling member to form a cooling area. The cooling member is spaced a predetermined distance from the side wall of the tank to reduce the effect of the cooling member on the temperature of the non-cooling region.

In an alternative embodiment, the cooling element comprises a cooling plate, which is connected to the groove bottom wall; the inside of cooling plate is provided with the coolant flow channel, and the cooling plate is provided with inlet and the liquid outlet with coolant flow channel intercommunication.

In the implementation process, the cooling plate is arranged in the first mounting groove, the cooling liquid flow channel is formed in the cooling plate, the cooling liquid in the cooling liquid flow channel can be utilized to cool the plate body of the cooling plate, and then the cooling plate body is used for cooling the groove bottom wall, so that the first plane forms a cooling area. The cooling plate is provided with inlet and liquid outlet with coolant flow channel intercommunication, can pass through the liquid outlet with the coolant liquid after the heat exchange and discharge, sends into in the coolant flow channel with new coolant liquid from the coolant liquid inlet, improves cooling efficiency.

In an alternative embodiment, the cooling element further comprises a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe is communicated with the liquid inlet, and the liquid outlet pipe is communicated with the liquid outlet; one side of the hot pressing plate, which is away from the first plane, is provided with two second mounting grooves, the second mounting grooves are through groove structures penetrating through the first mounting grooves, and the liquid inlet pipes and the liquid outlet pipes correspondingly penetrate through the two second mounting grooves one by one and extend out of the hot pressing plate.

In the implementation process, two second mounting grooves are formed in one side, away from the first plane, of the hot-pressing plate, and the liquid inlet pipe can penetrate through one of the second mounting grooves to be connected with the liquid inlet, so that cooling liquid can be conveyed into the cooling liquid flow channel. Similarly, the liquid outlet pipe can be connected with the liquid outlet through the other second mounting groove, and the cooling liquid after heat exchange in the cooling liquid flow passage can be sent out.

In an alternative embodiment, the wall thickness between the groove bottom wall and the first plane is 3-5mm in the thickness direction of the hot press plate.

In the implementation process, the wall thickness between the tank bottom wall and the first plane is 3-5mm, so that the cooling plate connected to the tank bottom wall is used for cooling the position of the hot pressing plate corresponding to the tank bottom wall, and the cooling effect of the cooling area is improved.

In an alternative embodiment, the extension path of the coolant flow channel is S-shaped.

In the implementation process, the extending path of the cooling flow channel is S-shaped, so that the cooling area can be increased, and the cooling effect of the cooling area is improved.

With reference to the first aspect, in an alternative embodiment, the thermo-compression device includes a press, an output member of the press being connected to at least one thermo-compression plate to adjust a pressure between the two thermo-compression plates.

In the implementation process, the output shaft of the press machine is connected with at least one hot pressing plate, when the membrane electrode between the two hot pressing plates needs to be subjected to hot pressing adhesion, the distance between the two hot pressing plates can be adjusted by using the press machine, so that the two hot pressing plates are close to or far away from each other, and the pressure between the two hot pressing plates is adjusted.

In an alternative embodiment, the press has two output parts, which are connected to the two hot-pressing plates in a one-to-one correspondence; each output piece is provided with a heating piece, and heat of the heating piece is transferred to the hot pressing plate through the output piece.

In the implementation process, the output piece is connected to each hot pressing plate, so that the two hot pressing plates can move along the direction close to each other simultaneously in a bidirectional opposite pressing mode to heat the membrane electrode. Meanwhile, the output part is provided with a heating part, and the heat of the heating part can be transmitted to the hot pressing plates through the output part to heat the hot pressing plates, so that the membrane electrode is heated while being pressed by the two hot pressing plates.

In an alternative embodiment, the thickness of the cooling member is smaller than the depth of the first mounting groove in the thickness direction of the hot press plate; each output piece comprises an output shaft and an output plate connected with the output shaft, and the output plate is in butt joint with the hot pressing plate.

In the implementation process, each output piece comprises an output shaft and an output plate connected with the output shaft, the output plate is abutted with the hot pressing plate in a plate surface-to-plate mode, and the hot pressing plate is subjected to pressure transmission and heating. Because the thickness of cooling piece is less than the degree of depth of first mounting groove, the cooling piece can not bulge in the face of hot pressing board, consequently when output plate and hot pressing board with the mode butt of board face, the output plate can not contradict the heating piece, can not directly transmit the temperature to the cooling piece, can reduce the mutual influence of heating piece and cooling piece, improves hot pressing quality.

In an alternative embodiment, the hot press apparatus further comprises a frame to which the press is fixed; the frame is provided with the guide post, along the direction of motion of output shaft, output plate and guide post sliding connection.

In the implementation process, the press is fixed on the frame, and the output plate is in sliding connection with the guide post, so that the motion stability of the output piece can be improved, and the hot pressing quality is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic diagram of a membrane electrode structure;

FIG. 2 is a schematic diagram of a prior art hot press apparatus;

FIG. 3 is a schematic plan view of a hot press apparatus according to an example of the present application;

FIG. 4 is a schematic view of a first view of a hot platen according to an exemplary embodiment of the present application;

FIG. 5 is a schematic view of a hot platen according to a second view of an exemplary embodiment of the present application;

FIG. 6 is a schematic view illustrating installation of a hot pressboard and a membrane electrode according to an example of the present application;

FIG. 7 is a schematic view showing the internal structure of a cooling plate according to an example of the present application;

fig. 8 is a schematic diagram illustrating the installation of a cooling plate and a hot pressing plate according to an embodiment of the present application.

Icon: 100-membrane electrode; 101-functional region; 102-a region to be heated; 200-heating a flat plate; 3-a hot press device; 31-a hot platen; 311-a first plane; 312-cooling zone; 313-heating zone; 314-a first mounting groove; 3141-groove sidewalls; 3142-groove bottom wall; 315-a second mounting slot; 32-cooling element; 321-cooling plates; 3211-a cooling liquid flow passage; 3212-liquid inlet; 3213-a liquid outlet; 322-liquid inlet pipe; 323-the drain pipe; 33-a press; 331-an output shaft; 332-an output board; 34-heating element; 35-a frame; 351-guiding columns.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and in the description of the drawings above are intended to cover non-exclusive inclusions.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "middle", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "bottom", "inner", etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of describing the embodiments of the present application and simplifying the description, and are not indicative or implying that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application.

As shown in fig. 1, a membrane electrode 100 to be subjected to thermocompression bonding generally includes a functional region 101 and a region to be heated 102 provided at an edge of the functional region 101.

The functional area 101 is typically a catalyst-coated membrane area (CCM area), and the area to be heated 102 is typically a frame formed of a hot melt adhesive material provided at an edge of the CCM area.

In the hot press bonding process of the membrane electrode 100, as shown in fig. 2, it is common to use a form of pressing two heating plates 200 against each other, and place the membrane electrode 100 to be hot-pressed between the two heating plates 200 with heating function. The pressure transmission device is started to apply a certain pressure to the heating flat plate 200, so that the region 102 to be heated of the membrane electrode 100 is heated and pressed, and the purpose of fitting is achieved.

The material of the region 102 to be heated of the membrane electrode 100 is usually a hot melt adhesive, and a heating temperature of 120 ℃ or higher is generally required to activate the hot melt adhesive to achieve the bonding effect. When the prior art heating plate 200 is used to heat and pressurize the membrane electrode 100, the functional area 101 of the membrane electrode 100 is heated. The temperature of the functional region 101 is substantially the same as the set temperature of the heating plate 200 throughout the hot pressing process. However, the high temperature of 120 ℃ may cause irreversible transformation to the coated catalyst at the functional region 101, eventually resulting in a decrease in performance of the functional region 101, affecting the performance of the membrane electrode 100.

Therefore, the present application further improves the hot press apparatus, so that the problem of the excessively high temperature of the functional region 101 when the hot press process is performed on the membrane electrode 100 can be improved to some extent. In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

Referring to fig. 3, the hot press apparatus 3 according to the present embodiment includes two hot press plates 31 and cooling elements 32 disposed opposite to each other.

Referring to fig. 4, a side of one hot platen 31 facing the other hot platen 31 is a complete plate and has a first plane 311. The side of one hot platen 31 facing away from the other hot platen 31 is provided with cooling elements 32 such that the first plane 311 has a cooling region 312 corresponding to the position of the cooling elements 32, and a heating region 313 located outside the cooling region 312. The cooling element 32 is seen in fig. 7.

When the membrane electrode 100 is hot-pressed, the membrane electrode 100 is placed between the two hot pressing plates 31, and the membrane electrode 100 is heated and pressurized by the two hot pressing plates 31. Since the cooling member 32 is provided at the side of the hot pressing plate 31 facing away from the membrane electrode 100, the cooling member 32 can cool a partial region of the hot pressing plate 31, so that the first plane 311 of the side of the hot pressing plate 31 facing the membrane electrode 100 has a cooling region 312 corresponding to the position of the cooling member 32. When the membrane electrode 100 is hot-pressed by the hot-pressing plate 31, the cooling region 312 contacts the functional region 101 of the membrane electrode 100, and the heating region 313 outside the cooling region 312 contacts the region to be heated 102 of the membrane electrode 100, so that the temperature of the functional region 101 can be reduced and the performance of the membrane electrode 100 after hot-press bonding can be improved while the region to be heated 102 is hot-pressed and bonded.

If the cooling member 32 is disposed on the side of the hot pressing plate 31 facing the membrane electrode, the cooling member 32 is directly in contact with the functional area 101 of the membrane electrode 100, and the functional area 101 can be cooled during hot pressing, but a gap is more or less present between the cooling member 32 and the hot pressing plate 31, so that it is inevitable that an indentation is generated in the membrane electrode 100 after hot pressing, and the quality of the membrane electrode 100 is affected.

Therefore, in the hot press device 3 provided by the embodiment of the present application, the cooling element 32 is disposed on the side of the hot press plate 31 away from the membrane electrode 100, so that the first plane 311 forms the cooling area 312, and a gap can be avoided from being formed on the side of the hot press plate 31 facing the membrane electrode 100, so that the membrane electrode 100 can be contacted with a complete plate plane, and the probability of generating an indentation in the hot press lamination process of the membrane electrode 100 is reduced.

The hot pressing plate 31 and the cooling member 32 in the hot press device 3 according to the example of the present application are described in further detail below with reference to the accompanying drawings.

The hot press device 3 includes two hot press plates 31 disposed opposite to each other for hot-pressing the membrane electrode 100 placed between the two hot press plates 31.

The side of the hot pressing plate 31, which is used for contacting with the membrane electrode 100, is a complete flat plate, so that the probability of forming an indentation when the hot pressing plate 31 carries out hot pressing on the membrane electrode 100 is reduced.

The present application is not limited to the specific shape of the hot platen 31 and how the cooling member 32 is mounted, and in one possible embodiment, referring to fig. 5, the hot platen 31 may be a plate-like structure having a rectangular outer shape with a groove formed in one side. Referring to fig. 6, the side opposite to the groove has a plate surface with almost no gap for contacting with the membrane electrode 100. With continued reference to fig. 5, the recess may include a first mounting groove 314. The cooling element 32 may be mounted in the first mounting slot 314.

Further, with continued reference to fig. 5, the first mounting groove 314 has a groove side wall 3141 and a groove bottom wall 3142. The groove bottom wall 3142 is for connection with the cooling member 32, and the groove side wall 3141 is spaced a predetermined distance from the cooling member 32.

The hot pressing plate 31 has good thermal conductivity and pressure transmission. The application is not limited to the specific material of the hot platen 31, and in one possible embodiment, the hot platen 31 may be selected from aluminum oxide or aluminum nitride ceramic plates.

To further isolate the temperature between the cooling member 32 and the tank sidewall 3141, in one possible embodiment, a thermal insulating material may be filled in the gap between the tank sidewall 3141 and the cooling member 32.

In order to further enhance the cooling effect of the cooling member 32 mounted at the groove bottom wall 3142 of the first mounting groove 314 on the cooling region 312, in one possible embodiment, the thickness of the groove bottom wall to the first plane 311 may be set to 3-5mm in the thickness direction of the hot press plate 31.

Illustratively, the thickness of the groove bottom wall to the first plane 311 may be in a range between one or any two of 3mm, 4mm, or 5 mm.

Further, the groove may further include a second mounting groove 315 according to the structure of the cooling member 32.

The present application is not limited to the specific arrangement of the cooling element 32, and the relevant person may make a corresponding choice as desired.

In one possible embodiment, with continued reference to FIG. 7, the cooling element 32 includes a cooling plate 321, the cooling plate 321 being connected to a trough bottom wall 3142.

With continued reference to fig. 7, a cooling fluid flow path 3211 is provided inside the cooling plate 321.

To further enhance the cooling effect of the cooling plate 321, in one possible embodiment, with continued reference to FIG. 7, the coolant flow channel 3211 may be S-shaped to increase the heat exchange area.

The cooling liquid flow path 3211 in the cooling plate 321 is filled with a cooling medium, such as a cooling liquid. The cooling liquid cools the plate walls of the cooling plate 321, which are in contact with the groove bottom wall 3142, and cools the positions of the hot press plate 31 corresponding to the groove bottom wall 3142, thereby forming the cooling regions 312.

To further increase the cooling efficiency of the cooling fluid, in one possible embodiment, with continued reference to fig. 7, the cooling plate 321 is provided with a fluid inlet 3212 and a fluid outlet 3213 in communication with the cooling fluid channel 3211.

The cooling plate 321 is provided with a liquid inlet 3212 and a liquid outlet 3213 which are communicated with the cooling liquid channel 3211, and can discharge the cooling liquid after heat exchange through the liquid outlet 3213, and send new cooling liquid into the cooling liquid channel 3211 from the liquid inlet 3212, thereby improving cooling efficiency.

Further, in order to facilitate the feeding of the cooling liquid from the liquid inlet 3212 and the discharging of the cooling liquid after heat exchange from the liquid outlet 3213, in a possible embodiment, the cooling element 32 further includes a liquid inlet pipe 322 and a liquid outlet pipe 323, wherein the liquid inlet pipe 322 is in communication with the liquid inlet 3212, and the liquid outlet pipe 323 is in communication with the liquid outlet 3213. Please refer to fig. 3 for the liquid inlet pipe 322 and the liquid outlet pipe 323.

Further, referring to fig. 5, the second mounting groove 315 may be configured as a through groove penetrating the first mounting groove 314, and the liquid inlet pipe 322 and the liquid outlet pipe 323 may extend out of the hot platen 31 through the second mounting groove 315.

In order to facilitate the supply of pressure to the membrane electrode 100 by means of two hot platens 31, in one possible embodiment, please continue to refer to fig. 3, the hot pressing device 3 comprises a press 33.

The output of the press 33 is connected to at least one heated platen 31 to regulate the pressure between the two heated platens 31.

The present application is not limited to the connection of the output member to several platens 31, in one possible embodiment, the output member is connected to one of the platens 31 and the other platen 31 remains stationary.

When it is necessary to perform hot pressing on the membrane electrode 100 placed between the two hot pressing plates 31, the hot pressing plate 31 connected thereto may be driven by the output member to move in a direction approaching the other hot pressing plate 31.

Or in another possible embodiment, referring still to fig. 3, an output member is connected to each platen 31.

When the membrane electrode 100 placed between the two hot pressing plates 31 needs to be hot pressed, the two output pieces can simultaneously drive the hot pressing plates 31 connected with the two output pieces to move towards the directions approaching to each other.

Further, to facilitate connection of the output members to the platen 31 of the plate-like structure, in one possible embodiment, with continued reference to FIG. 3, each output member includes an output shaft 331 and an output plate 332 connected to the output shaft 331. The output plate 332 abuts against the side of the hot press plate 31 facing away from the first plane 311 in a plate-to-plate manner, and increases the pressure receiving area of the hot press plate 31.

Further, a heating member 34 may be provided at the output plate 332, and the output plate 332 may be heated by the heating member 34 and then heat may be transferred to the hot press plate 31.

The application is not limited to a particular arrangement of heating elements 34, and in one possible embodiment heating elements 34 may be resistive wires embedded within output plate 332.

Further, in order to avoid the contact between the output plate 332 and the cooling member 32 when the output plate 332 abuts against the hot press plate 31, the probability that the output plate 332 transfers the heat generated by the heating member 34 to the cooling member 32 is reduced, and in a possible embodiment, referring to fig. 8, the thickness of the cooling plate 321 is smaller than the depth of the first mounting groove 314 along the thickness direction of the hot press plate 31.

Similarly, the thickness of the inlet pipe 322 and the outlet pipe 323 in the cooling member 32 is smaller than the depth of the second mounting groove 315.

In order to improve the stability of the movement of the output member, in a possible embodiment, with continued reference to fig. 3, the hot press device 3 may be further provided with a frame 35, and the press may be fixed to the frame 35. The frame 35 is provided with a guide post 351, and the output plate 332 is slidably connected to the guide post 351 along the movement direction of the output shaft 331.

Illustratively, the frame 35 has upper and lower support tables, at which an output shaft 331 and a guide post 351 in the same direction as the output shaft 331 are provided. The output plate 332 is provided with a through hole penetrating the guide post 351. Meanwhile, the output plate 332 is connected to the output shaft 331.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A hot press device for hot pressing a membrane electrode, wherein the membrane electrode is provided with a region to be heated and a functional region; the hot pressing device is characterized by comprising a cooling piece and two oppositely arranged hot pressing plates;

One side of one hot pressing plate facing the other hot pressing plate is a complete plate and is provided with a first plane, and the side of one hot pressing plate facing away from the other hot pressing plate is provided with the cooling piece, so that the first plane is provided with a cooling area corresponding to the position of the cooling piece and a heating area outside the cooling area;

When the two hot pressing plates are used for hot pressing the membrane electrode, the membrane electrode is positioned between the two hot pressing plates, the functional area is contacted with the cooling area, and the area to be heated is contacted with the heating area.

2. The hot press apparatus according to claim 1, wherein a side of the hot press plate facing away from the first plane is provided with a first mounting groove having a groove side wall and a groove bottom wall; the cooling piece is arranged in the first mounting groove, the cooling piece is connected with the groove bottom wall, and the cooling piece is spaced from the groove side wall by a preset distance.

3. The hot press according to claim 2, wherein the cooling member includes a cooling plate connected to the tank bottom wall; the inside of cooling plate is provided with the coolant flow channel, the cooling plate be provided with coolant flow channel intercommunication's inlet and liquid outlet.

4. The hot press according to claim 3, wherein the cooling member further comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe being in communication with the liquid inlet, the liquid outlet pipe being in communication with the liquid outlet; one side of the hot pressing plate, which is away from the first plane, is provided with two second mounting grooves, the second mounting grooves penetrate through the through groove structures of the first mounting grooves, and the liquid inlet pipes and the liquid outlet pipes penetrate through the two second mounting grooves in a one-to-one correspondence mode and extend out of the hot pressing plate.

5. A hot press according to claim 3, wherein the wall thickness between the groove bottom wall and the first plane is 3-5mm in the thickness direction of the hot press plate.

6. The heat press according to claim 3, wherein the extending path of the coolant flow passage is S-shaped.

7. The hot press according to any one of claims 2 to 6, wherein the hot press comprises a press, an output of which is connected to at least one of the hot press plates to adjust the pressure between the two hot press plates.

8. The hot press according to claim 7, wherein the press has two output members connected to the two hot press plates in one-to-one correspondence; each output piece is provided with a heating piece, and heat of the heating piece is transferred to the hot pressing plate through the output piece.

9. The heat press apparatus according to claim 8, wherein a thickness of the cooling member is smaller than a depth of the first mounting groove in a thickness direction of the heat press plate; each output piece comprises an output shaft and an output plate connected with the output shaft, and the output plate is in butt joint with the hot pressing plate.

10. The hot press apparatus of claim 9, further comprising a frame, the press being secured to the frame; the frame is provided with the guide post, along the direction of motion of output shaft, the output plate with guide post sliding connection.