CN117584588A - Heating device for multi-layer multi-cavity laminator, multi-layer multi-cavity laminator and lamination method - Google Patents

Abstract

The invention relates to a heating device of a multi-layer multi-cavity laminator, a multi-layer multi-cavity laminator and a lamination method. The heating device includes a first heating unit, a second heating unit and a third heating unit connected by an electronically controlled telescopic mechanism; The first heating unit includes a first elastic metal mesh, a plurality of first heat conduction pipes are embedded and installed inside the first elastic metal mesh, a top heat insulation plate is laid on the surface of the first elastic metal mesh, and a third thermal insulation plate is laid on the lower surface of the first elastic metal mesh. A layer of laminate; the second heating unit includes a second elastic metal mesh, a plurality of second heat conduction pipes are embedded inside the second elastic metal mesh, and the second laminate is laid on the upper and lower surfaces of the second elastic metal mesh; the third heating unit It includes a third elastic metal mesh, a plurality of third heat conduction pipes are embedded inside the third elastic metal mesh, a third laminate is laid on the surface of the third elastic metal mesh, and a bottom heat insulation plate is laid on the lower surface of the third elastic metal mesh; Solve the problems of extrusion damage and uneven heating of photovoltaic modules.

Description

Heating device for multi-layer multi-cavity laminator, multi-layer multi-cavity laminator and lamination method

Technical field

The present invention relates to the technical field of laminators, and in particular to a heating device for a multi-layer multi-cavity laminator, a multi-layer multi-cavity laminator and a lamination method.

Background technique

As my country's photovoltaic industry develops more and more maturely and its scale continues to grow, everything from photovoltaic product production equipment to photovoltaic product quality needs to be further improved to meet the rapidly developing market demand. As the market's requirements for the quality of photovoltaic modules are getting higher and higher, and the area of photovoltaic modules is getting larger and larger, the requirements for photovoltaic module laminators are also increasing. Photovoltaic module laminator is the core equipment in the photovoltaic module production process.

Patent CN 201720435400.4 discloses a laminator that heats quickly and evenly. The inside of the movable pressing plate is a cavity. A placing plate is provided in the movable pressing plate. A limiting slot is provided on the placing plate. The limiting slot fixes the heating tube. When combined, the heating energy of the heating tube directly acts on the movable pressure plate. The heat generated above the heating tube can directly act on the top of the movable pressure plate. The heating tube is engaged by the limiting groove, so that the heat generated by the heating tube is limited by the limiting groove. , cannot directly act under the movable platen, and cannot achieve uniform heating of the movable platen. At the same time, the problem of extrusion damage due to direct contact with materials during the lamination process and the problem of low yield during the production process cannot be achieved. While meeting product performance and appearance standard requirements, it also increases production costs.

Therefore, in order to solve the above problems, the present invention urgently needs to provide a heating device for a multi-layer multi-cavity laminator, a multi-layer multi-cavity laminator and a lamination method.

Contents of the invention

The object of the present invention is to provide a heating device for a multi-layer multi-cavity laminator, a multi-layer multi-cavity laminator and a lamination method. The pressing method is designed to solve the technical problems existing in the existing technology, such as damage and uneven heating of photovoltaic modules during the extrusion process, thereby affecting product quality and failing to meet standard requirements.

In order to solve the above problems, the present invention mainly provides the following technical solutions:

On the one hand, the present invention provides a heating device for a multi-layer multi-cavity laminator, which includes from top to bottom: a first heating unit, a second heating unit and a third heating unit. The first heating unit, the second heating unit It is connected to the third heating unit through an electronically controlled telescopic mechanism;

The first heating unit includes a first elastic metal mesh, a plurality of first heat conduction pipes are embedded and installed inside the first elastic metal mesh, a top heat insulation plate is laid on the surface of the first elastic metal mesh, and a third thermal insulation plate is laid on the lower surface of the first elastic metal mesh. laminate;

The second heating unit includes a second elastic metal mesh, a plurality of second heat conduction pipes are embedded and installed inside the second elastic metal mesh, and a second laminate is laid on the upper and lower surfaces of the second elastic metal mesh;

The third heating unit includes a third elastic metal mesh. A plurality of third heat conduction pipes are embedded inside the third elastic metal mesh. A third laminate is laid on the surface of the third elastic metal mesh. A bottom layer is laid on the lower surface of the third elastic metal mesh. insulation panels;

It also includes a controller and an operating panel, the operating panel is electrically connected to the controller, and the electronically controlled telescopic mechanism, the first heat conduction pipe, the second heat conduction pipe and the third heat conduction pipe are all electrically connected to the controller.

Further, the electronically controlled telescopic mechanism includes four first electronically controlled telescopic rods and four second electronically controlled telescopic rods. The first heating unit is connected to the second heating unit through the first electronically controlled telescopic rods, and the second heating unit is connected through the first electronically controlled telescopic rod. The two electronically controlled telescopic rods are connected to the third heating unit; the first electronically controlled telescopic rod and the second electronically controlled telescopic rod are both electrically connected to the controller.

Further, each first electronically controlled telescopic rod is located between the first heating unit and the second heating unit, with one end vertically penetrating through the top corner of the first heating unit, and the other end vertically penetrating the top corner of the second heating unit; Two electronically controlled telescopic rods are located between the second heating unit and the third heating unit, with one end vertically penetrating the top corner of the second heating unit and the other end vertically penetrating the top corner of the third heating unit; the first electronically controlled telescopic rod can The first heating unit and the second heating unit are closed, and the second electrically controlled telescopic rod can close the second heating unit and the third heating unit.

Further, each first heat-conducting tube is evenly arranged in the first elastic metal mesh along the length direction of the first elastic metal mesh; each second heat-conducting tube is evenly arranged in the second elastic metal mesh along the length direction of the second elastic metal mesh; The third heat-conducting pipes are evenly distributed in the third elastic metal mesh along the length direction of the third elastic metal mesh.

Further, the first elastic metal mesh, the second elastic metal mesh and the third elastic metal mesh are all made of copper; the top heat insulation plate and the bottom heat insulation plate are coated with aluminum polyester.

Further, the lower surface of the first laminate plate is provided with a first concave groove, and the upper end surface of the second laminate plate located above the second elastic metal mesh is provided with a second upper groove, the first concave groove and the second upper groove. A first laminated cavity is formed; the lower plate surface of the second laminate plate located under the second elastic metal mesh is provided with a second lower groove, the upper surface of the third laminate plate is provided with a third groove, and the second lower groove is provided on the upper surface of the third laminate plate. The groove and the third groove form a second lamination cavity.

Further, a temperature sensor is installed on the second heating unit, and the temperature sensor is electrically connected to the controller.

On the other hand, the present invention provides a multi-layer multi-cavity laminating machine, which includes a base, a frame is fixedly installed on the base, and a groove is provided in the base;

It also includes a plurality of side-by-side heating devices of the above-mentioned multi-layer multi-cavity laminator. The bottom of the heating device of each multi-layer multi-cavity laminator is fixedly connected to the groove through a telescopic support mechanism. The top of the heating device of the cavity laminator is fixedly connected to the frame through a lifting mechanism;

Both the support mechanism and the lifting mechanism are electrically connected to the controller.

Further, the operation panel is installed on the outside of the base.

In another aspect, the present invention provides a lamination method of a multi-layer multi-cavity laminator. The lamination method of the multi-layer multi-cavity laminator is to use the above-mentioned multi-layer multi-cavity laminator to laminate photovoltaic modules. Each layer of material is laminated, including the following steps:

S1 transports each layer of material of the photovoltaic module between the first heating unit and the second heating unit and/or between the second heating unit and the third heating unit. After extruding and heating the materials for a period of time, Obtain bonded layers of materials;

S2 performs cooling treatment on the bonded layers of materials to obtain photovoltaic modules.

Compared with the existing technology, the heating device of the multi-layer multi-cavity laminator, the multi-layer multi-cavity laminator and the lamination method provided by the present invention have the following improvements:

On the one hand, the present invention provides a heating device for a multi-layer multi-cavity laminator. A first elastic metal mesh, a second elastic metal mesh are respectively provided in the first heating unit, the second heating unit and the third heating unit. The first elastic metal mesh, the second elastic metal mesh and the third elastic metal mesh are respectively provided with a first heat conduction pipe, a second heat conduction pipe and a third heat conduction pipe. The heat conduction pipes are started for heating. At the same time, the elastic metal mesh has good thermal conductivity, allowing the photovoltaic modules to be heated evenly. The design of the top and bottom heat insulation panels of the device plays a role in heat preservation and prevents workers from being scalded.

On the other hand, the present invention provides a multi-layer multi-cavity laminating machine. The multi-layer multi-cavity laminating machine adopts the above-mentioned heating device of the multi-layer multi-cavity laminating machine. The first elastic metal mesh and the second elastic metal mesh are And the third elastic metal mesh has high strength and toughness, and has a certain elasticity. It plays a buffering role when being squeezed and stressed, and plays a protective role in the photovoltaic modules to prevent cracks and damage during the stress process. , making the force on the photovoltaic modules more uniform.

On the other hand, the present invention provides a lamination method of a multi-layer multi-cavity laminator. When the materials of each layer of the photovoltaic module are put into the laminator for extrusion, they can be heated and stressed evenly, effectively avoiding the problem of photovoltaic Components are extruded and damaged, the yield is improved, and product quality and appearance requirements are met, thereby greatly reducing production costs.

Description of drawings

In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description The drawings illustrate some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

Figure 1 is a schematic structural view of the heating device of the multi-layer multi-cavity laminator of the present invention (front perspective view in the open state);

Figure 2 is a schematic structural diagram (front perspective view) of the multi-layer multi-cavity laminating machine according to the present invention;

Figure 3 is a schematic structural view of the heating device of the multi-layer multi-cavity laminator of the present invention (a front perspective view in a closed state);

Figure 4 is a schematic structural diagram (longitudinal cross-sectional view) of the first heating unit in the present invention;

Figure 5 is a schematic structural diagram (longitudinal cross-sectional view) of the second heating unit in the present invention;

Figure 6 is a schematic structural diagram (longitudinal cross-sectional view) of the third heating unit in the present invention;

Figure 7 is a schematic structural diagram (transverse cross-sectional view) of the first elastic metal mesh in the present invention;

Figure 8 is an exploded view of the base in the present invention;

Figure 9 is an exploded view of the frame of the present invention;

Figure 10 is a circuit connection diagram of the multi-layer multi-cavity laminator in the present invention.

Explanation of reference symbols:

1. First heating unit; 101. First elastic metal mesh; 102. First heat conduction pipe; 103. Top heat insulation plate; 104. First laminate; 2. Second heating unit; 201. Second elastic metal mesh ; 202. Second heat conduction pipe; 203. Second laminate; 3. Third heating unit; 301. Third elastic metal mesh; 302. Third heat conduction pipe; 303. Third laminate; 304. Bottom heat insulation plate ; 4. Electronically controlled telescopic mechanism; 401. First electronically controlled telescopic rod; 402. Second electronically controlled telescopic rod; 5. Operation panel; 6. Base; 7. Frame; 8. Groove; 9. Support mechanism; 10 , Lifting mechanism.

Detailed ways

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations of the invention. Furthermore, the terms “first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

On the one hand, as shown in Figures 1, 2, 3, 4, 5, 6, 7, and 10, embodiments of the present invention provide a heating device for a multi-layer multi-cavity laminator. From top to bottom, it includes: a first heating unit 1, a second heating unit 2 and a third heating unit 3. The first heating unit 1, the second heating unit 2 and the third heating unit 3 are connected through an electronically controlled telescopic mechanism 4; A heating unit 1 includes a first elastic metal mesh 101. A plurality of first heat conduction pipes 102 are embedded and installed inside the first elastic metal mesh 101. A top heat insulation plate 103 is laid on the upper surface of the first elastic metal mesh 101. The first laminate 104 is laid on the lower surface of the mesh 101; the second heating unit 2 includes a second elastic metal mesh 201. A plurality of second heat conduction pipes 202 are embedded inside the second elastic metal mesh 201. The second elastic metal mesh 201 is installed up and down. The second laminate 203 is laid on the surface; the third heating unit 3 includes a third elastic metal mesh 301. A plurality of third heat conduction pipes 302 are embedded and installed inside the third elastic metal mesh 301. The upper surface of the third elastic metal mesh 301 is laid There is a third laminate 303, and a bottom heat insulation plate 304 is laid on the lower surface of the third elastic metal mesh 301; it also includes a controller and an operation panel 5, the operation panel 5 is electrically connected to the controller, the electronically controlled telescopic mechanism 4, and the first thermal conductor The tube 102, the second heat conducting tube 202 and the third heat conducting tube 302 are all electrically connected to the controller.

The embodiment of the present invention provides a heating device for a multi-layer multi-cavity laminator, which sequentially includes from top to bottom: a first heating unit 1, a second heating unit 2 and a third heating unit 3. The first heating unit 1 The second heating unit 2 and the third heating unit 3 are connected through an electronically controlled telescopic mechanism 4; the first heating unit 1 includes a first elastic metal mesh 101, and a plurality of first heat conduction tubes 102 are embedded in the first elastic metal mesh 101. , the top heat insulation plate 103 is laid on the upper surface of the first elastic metal mesh 101, and the first laminate 104 is laid on the lower surface of the first elastic metal mesh 101; the second heating unit 2 includes a second elastic metal mesh 201, the second elastic metal A plurality of second heat conduction pipes 202 are embedded and installed inside the mesh 201, and the second laminate 203 is laid on the upper and lower surfaces of the second elastic metal mesh 201; the third heating unit 3 includes a third elastic metal mesh 301, and the third elastic metal mesh 301 A plurality of third heat conduction pipes 302 are embedded and installed inside, a third laminate 303 is laid on the upper surface of the third elastic metal mesh 301, and a bottom heat insulation plate 304 is laid on the lower surface of the third elastic metal mesh 301; it also includes a controller and an operation The panel 5 and the operation panel 5 are electrically connected to the controller. The electronically controlled telescopic mechanism 4, the first heat pipe 102, the second heat pipe 202 and the third heat pipe 302 are all electrically connected to the controller. In the first heating unit 1 , the second heating unit 2 and the third heating unit 3 are respectively provided with a first elastic metal mesh 101, a second elastic metal mesh 201 and a third elastic metal mesh 301. In the first elastic metal mesh 101 and the second elastic metal mesh 201 and the third elastic metal mesh 301 are respectively provided with a first heat conduction pipe 102, a second heat conduction pipe 202 and a third heat conduction pipe 302. When the heat conduction pipes are started for heating, the elastic metal mesh has better thermal conductivity, so that the photovoltaic module It can be heated evenly, and the design of the heat insulation plate 103 at the top and the heat insulation plate 304 at the bottom of the device plays the role of heat preservation and prevents workers from being scalded.

As shown in Figures 1, 2, 3, and 10, the electronically controlled telescopic mechanism 4 in the embodiment of the present invention includes four first electronically controlled telescopic rods 401 and four second electronically controlled telescopic rods 402. The first heating unit 1 is connected to the second heating unit 2 through the first electronically controlled telescopic rod 401, and the second heating unit 2 is connected to the third heating unit 3 through the second electronically controlled telescopic rod 402; the first electronically controlled telescopic rod 401 and the second electronically controlled telescopic rod The telescopic rods 402 are all electrically connected to the controller. The first electronically controlled telescopic rod 401 and the second electronically controlled telescopic rod 402 are high-thrust automatic telescopic rods. The brand is LUI LEC and the model is B(32)TL. They belong to the existing technology and will not be described again here.

Each first electronically controlled telescopic rod 401 in the embodiment of the present invention is located between the first heating unit 1 and the second heating unit 2. One end vertically penetrates the top corner of the first heating unit 1, and the other end vertically penetrates the second heating unit 2. At the top corner of At the top corner of the , the controller controls the lifting and lowering of the first electronically controlled telescopic rod 401 and the second electronically controlled telescopic rod 402, thereby squeezing the photovoltaic module.

As shown in FIG. 7 , each first heat conduction pipe 102 in the embodiment of the present invention is evenly distributed in the first elastic metal mesh 101 along the length direction of the first elastic metal mesh 101 ; each second heat conduction pipe 202 is arranged along the second elastic metal mesh 201 The length direction is uniformly arranged in the second elastic metal mesh 201; each third heat conduction pipe 302 is evenly arranged in the third elastic metal mesh 301 along the length direction of the third elastic metal mesh 301, so that the photovoltaic module is heated more evenly.

The first elastic metal mesh 101, the second elastic metal mesh 201 and the third elastic metal mesh 301 in the embodiment of the present invention are all made of copper, which not only has high strength and toughness, but also has a certain elasticity and can be heated evenly. It can buffer the stress of photovoltaic materials; the top heat insulation board 103 and the bottom heat insulation board 304 are coated with aluminum polyester. Aluminum polyester is a heat insulation material with high reflective performance, which can effectively reduce heat loss and has Better thermal insulation effect reduces energy loss, and at the same time, it can also play an anti-corrosion role.

As shown in Figures 4, 5, and 6, the lower surface of the first laminate 104 in the embodiment of the present invention is provided with a first concave groove, and the upper end surface of the second laminate 203 located above the second elastic metal mesh 201 is provided with a first concave groove. There is a second upper groove, and the first concave groove and the second upper groove form a first lamination cavity; the lower surface of the second laminate 203 located below the second elastic metal mesh 201 is provided with a second lower groove. , the upper surface of the third laminate 303 is provided with a third groove, the second lower groove and the third groove form a second lamination cavity, and the materials of each layer of the photovoltaic module that need to be heated and extruded are placed accordingly. inside the cavity.

The second heating unit 2 in the embodiment of the present invention is equipped with a temperature sensor, and the temperature sensor is electrically connected to the controller to facilitate control of the heating temperature.

On the other hand, as shown in Figures 2, 8, 9, and 10, the embodiment of the present invention provides a multi-layer multi-cavity laminator, which includes a base 6, a frame 7 fixedly installed on the base 6, and a frame 7 fixedly installed on the base 6. 6 is provided with a groove 8; it also includes a plurality of side-by-side heating devices of the above-mentioned multi-layer multi-cavity laminator. The bottom of the heating device of each multi-layer multi-cavity laminator is connected with the telescopic support mechanism 9 The groove 8 is fixed, and the top of the heating device of each multi-layer multi-cavity laminator is fixed to the frame 7 through the lifting mechanism 10; the support mechanism 9 and the lifting mechanism 10 are both electrically connected to the controller.

The embodiment of the present invention provides a multi-layer multi-cavity laminating machine, which includes a base 6 on which a frame 7 is fixedly mounted and a groove 8 provided in the base 6; The heating device of the multi-layer multi-cavity laminator, the bottom of the heating device of each multi-layer multi-cavity laminator is fixedly connected to the groove 8 through the retractable support mechanism 9, and the top of the heating device of each multi-layer multi-cavity laminator Through the design that the lifting mechanism 10 is fixedly connected to the frame 7; the support mechanism 9 and the lifting mechanism 10 are both electrically connected to the controller, the multi-layer multi-cavity laminator adopts the above-mentioned heating device of the multi-layer multi-cavity laminator, and the first elasticity The metal mesh 101, the second elastic metal mesh 201 and the third elastic metal mesh 301 have high strength and toughness, and have a certain elasticity. They play a buffering role when squeezed and stressed, and protect the photovoltaic modules. Function to prevent cracks and damage during the stress process, making the photovoltaic modules more evenly stressed. The support mechanism 9 is an electric push rod, the brand is Longxiang (Hardware), the model is SXTL, which belongs to the existing technology and will not be repeated here; the lifting mechanism 10 is a reciprocating motor telescopic rod, the brand is Alide, the model is PAST- 02, which belongs to the existing technology and will not be described again here.

As shown in Figure 2, the operation panel 5 of the embodiment of the present invention is installed outside the base 6 to facilitate operation and control the heating and extrusion of photovoltaic modules.

On the other hand, embodiments of the present invention provide a lamination method of a multi-layer multi-cavity laminator. The lamination method of the multi-layer multi-cavity laminator utilizes the above-mentioned multi-layer multi-cavity laminator. Laminating each layer of material of the photovoltaic module includes the following steps: S1 transporting each layer of material of the photovoltaic module between the first heating unit 1 and the second heating unit 2 and/or the second heating unit 2 and the third heating unit In unit 3, each layer of material is extruded and heated for a period of time to obtain bonded layers of material; S2 performs cooling treatment on the bonded layer of material to obtain a photovoltaic module.

Embodiments of the present invention provide a lamination method of a multi-layer multi-cavity laminator. The lamination method of the multi-layer multi-cavity laminator is to use the above-mentioned multi-layer multi-cavity laminator to laminate photovoltaic modules. Laminating each layer of material includes the following steps: S1 transporting each layer of material of the photovoltaic module between the first heating unit 1 and the second heating unit 2 and/or between the second heating unit 2 and the third heating unit 3 During the period, each layer of material is extruded and heated for a period of time to obtain the bonded layers of materials; S2 performs cooling treatment on the bonded layers of materials to obtain the design of the photovoltaic module, and the materials of each layer of the photovoltaic module are placed into the layer During the extrusion process in the press, it can be heated and stressed evenly, effectively avoiding extrusion damage to photovoltaic modules, improving the yield, and meeting product quality and appearance requirements, thus greatly reducing production costs.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention. scope.

Claims (10)

1. A heating device for a multi-layer multi-cavity laminator, characterized in that, from top to bottom, it includes: a first heating unit (1), a second heating unit (2) and a third heating unit (3), The first heating unit (1), the second heating unit (2) and the third heating unit (3) are connected through an electronically controlled telescopic mechanism (4); The first heating unit (1) includes a first elastic metal mesh (101). A plurality of first heat conduction pipes (102) are embedded and installed inside the first elastic metal mesh (101). The upper surface of the first elastic metal mesh (101) is laid There is a top heat insulation board (103), and a first laminate (104) is laid on the lower surface of the first elastic metal mesh (101); The second heating unit (2) includes a second elastic metal mesh (201). A plurality of second heat conduction pipes (202) are embedded and installed inside the second elastic metal mesh (201). The upper and lower surfaces of the second elastic metal mesh (201) are evenly spaced. A second laminate is laid (203); The third heating unit (3) includes a third elastic metal mesh (301). A plurality of third heat conduction pipes (302) are embedded and installed inside the third elastic metal mesh (301). The upper surface of the third elastic metal mesh (301) is laid There is a third laminate (303), and a bottom heat insulation board (304) is laid on the lower surface of the third elastic metal mesh (301); It also includes a controller and an operation panel (5). The operation panel (5) is electrically connected to the controller, and the electronically controlled telescopic mechanism (4), the first heat transfer pipe (102), the second heat transfer pipe (202) and the third heat transfer pipe (302) are all electrically connected to the controller. 2. The heating device of the multi-layer multi-cavity laminator according to claim 1, characterized in that, The electronically controlled telescopic mechanism (4) includes four first electronically controlled telescopic rods (401) and four second electronically controlled telescopic rods (402). The first heating unit (1) communicates with the first electronically controlled telescopic rod (401) through the first electronically controlled telescopic rods (401). The second heating unit (2) is connected, and the second heating unit (2) is connected to the third heating unit (3) through the second electronically controlled telescopic rod (402); The first electronically controlled telescopic rod (401) and the second electronically controlled telescopic rod (402) are both electrically connected to the controller. 3. The heating device of the multi-layer multi-cavity laminator according to claim 2, characterized in that, Each first electronically controlled telescopic rod (401) is located between the first heating unit (1) and the second heating unit (2). One end vertically penetrates the top corner of the first heating unit (1), and the other end vertically penetrates the second heating unit (1). at the top corner of the heating unit (2); Each second electronically controlled telescopic rod (402) is located between the second heating unit (2) and the third heating unit (3). One end vertically penetrates the top corner of the second heating unit (2), and the other end vertically penetrates the third heating unit (3). at the top corner of the heating unit (3); The first electronically controlled telescopic rod (401) can close the first heating unit (1) and the second heating unit (2), and the second electronically controlled telescopic rod (402) can connect the second heating unit (2) and the third heating unit (2). The heating unit (3) is closed. 4. The heating device of the multi-layer multi-cavity laminator according to claim 1, characterized in that, Each first heat-conducting tube (102) is evenly distributed in the first elastic metal mesh (101) along the length direction of the first elastic metal mesh (101); Each second heat conduction tube (202) is evenly distributed in the second elastic metal mesh (201) along the length direction of the second elastic metal mesh (201); Each third heat conduction tube (302) is evenly distributed in the third elastic metal mesh (301) along the length direction of the third elastic metal mesh (301). 5. The heating device of the multi-layer multi-cavity laminator according to claim 1, characterized in that, The first elastic metal mesh (101), the second elastic metal mesh (201) and the third elastic metal mesh (301) are all made of copper; Both the top (103) and bottom (304) insulation panels are coated with aluminum polyester. 6. The heating device of the multi-layer multi-cavity laminator according to claim 1, characterized in that, The lower surface of the first laminate (104) is provided with a first concave groove, and the upper end surface of the second laminate (203) located above the second elastic metal mesh (201) is provided with a second upper groove. The first concave groove and a second upper groove forming a first lamination cavity; The lower surface of the second laminate (203) located below the second elastic metal mesh (201) is provided with a second lower groove, and the upper surface of the third laminate (303) is provided with a third groove. The groove and the third groove form a second lamination cavity. 7. The heating device of a multi-layer multi-cavity laminator according to claim 1, characterized in that a temperature sensor is installed on the second heating unit (2), and the temperature sensor is electrically connected to the controller. 8. A multi-layer multi-cavity laminating machine, characterized in that it includes a base (6), a frame (7) is fixedly installed on the base (6), and a groove (8) is provided in the base (6); It also includes a plurality of side-by-side heating devices of the multi-layer multi-cavity laminator according to any one of claims 1-7, and the bottom of the heating device of each multi-layer multi-cavity laminator passes through a telescopic support mechanism (9 ) is fixed to the groove (8), and the top of the heating device of each multi-layer multi-cavity laminator is fixed to the frame (7) through the lifting mechanism (10); The support mechanism (9) and the lifting mechanism (10) are both electrically connected to the controller. 9. The multi-layer multi-cavity laminator according to claim 8, characterized in that the operation panel (5) is installed outside the base (6). 10. A lamination method of a multi-layer multi-cavity laminator, characterized in that the lamination method of the multi-layer multi-cavity laminator utilizes the multi-layer multi-cavity laminator of claim 8 or 9 Laminating the various layers of materials in the photovoltaic module includes the following steps: S1 transports each layer of material of the photovoltaic module between the first heating unit (1) and the second heating unit (2) and/or between the second heating unit (2) and the third heating unit (3). After the layer materials are extruded and heated for a period of time, the bonded layers of materials are obtained; S2 performs cooling treatment on the bonded layers of materials to obtain photovoltaic modules.