Electromagnetic heating type photovoltaic module laminating machine and heating device thereof

Abstract

The utility model aims to solve the problems that an electromagnetic coil of a heating device of a laminating machine in the prior art is wound on a hot pressing plate, so that dense through holes are formed in the hot pressing plate, the sealing performance is lost, and a layer of heat insulation plate needs to be additionally arranged on each of the upper and lower surfaces of the hot pressing plate to seal the through holes; the utility model provides an electromagnetic heating type photovoltaic module laminating machine and a heating device thereof in order to overcome the defects that the manufacturing cost is high, heat cannot directly act on a photovoltaic module but acts on a heat insulation plate to cause energy loss in the prior art, and provides the electromagnetic heating type photovoltaic module laminating machine and the heating device thereof. Comprising a heating plate used for bearing, supporting and heating the photovoltaic module, the heating plate is made of magnetic conductive materials, the electromagnetic heating type photovoltaic module laminating machine and the heating device thereof are high in heat efficiency and small in heat loss, a through hole perpendicular to a heating plate body does not need to be formed in the heating plate body, vacuumizing of a laminating cavity cannot be affected, and the production cost is reduced. And the condition that the temperature on the heating plate is not uniform due to fast heat dissipation of the border area and slow heat dissipation of the lamination area is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic laminators, and in particular relates to a laminator with a heating plate using electromagnetic heating and a heating device thereof. Background Art

[0002] With the innovation of photovoltaic industry technology, the production capacity of laminators is constantly improving. When producing photovoltaic modules, energy consumption is also increasing, which makes energy consumption more and more important. The main energy consumption of the laminator is concentrated on the heating of the heating plate. Reducing the heating energy consumption of the heating plate will reduce the energy consumption of the entire laminator. Traditional heating plates use oil heating, but oil heating has serious energy loss and high energy consumption. At this stage, oil heating is on the verge of elimination. SMD electric heating has become the mainstream heating method, but due to the limitations of the structure of the photovoltaic module laminator itself, its energy consumption is still very large. In order to reduce costs and save energy, various component manufacturers are actively seeking new ideas for energy saving and consumption reduction.

[0003] The Chinese utility model patent entitled "An electromagnetic induction heating device and a laminator having the same", with publication number 114828319 B and publication date 2022.10.21, discloses an electromagnetic induction heating device, including a hot pressing plate 11, an electromagnetic induction heater, an electromagnetic induction wire and a controller, a plurality of through holes 21 are opened transversely along the hot pressing plate 11, a plurality of through holes 31 are opened perpendicular to the plate surface of the hot pressing plate 11 corresponding to each of the through holes 21, each of the through holes 31 passes through the hot pressing plate 11, and a plurality of the through holes 31 are arranged transversely along the hot pressing plate 11, the electromagnetic induction wire is passed through the through holes 21 and the through holes 31, the electromagnetic induction wire is electrically connected to the electromagnetic induction heater, and the controller is electrically connected to the electromagnetic induction heater. The above-mentioned heating device is used, and the electromagnetic induction coil interacts with the hot press plate to generate heat. Since the hot press plate is provided with perforations, it loses its sealing property and can only be used as a heat source plate. Two heat insulation plates need to be provided above and below the hot press plate to seal the perforations on the hot press plate. The heat generated by the hot press plate is transferred to the heat insulation plate and then heats the photovoltaic module, causing part of the heat to be lost. At the same time, the addition of two heat insulation plates increases the manufacturing cost of the laminator. In addition, in the photovoltaic module laminator, the edge of the heating plate contacts the outside world to generate heat exchange, resulting in large heat loss, causing the actual temperature in the edge area to be lower than the actual temperature in the lamination area, making the temperature in the center of the heating plate higher than the temperature in the edge area, making the surface temperature distribution of the heating plate uneven, and making the temperature distribution in the lamination area uneven, affecting the lamination quality. Utility Model Content

[0004] The purpose of the utility model is to provide an electromagnetic heating photovoltaic module laminator and a heating device thereof for a prior art laminator, in which the electromagnetic coil of the heating device is wound on a hot pressing plate, so that the hot pressing plate is provided with dense perforations, which loses its sealing property and requires a layer of heat insulation board to be installed on the upper and lower surfaces of the hot pressing plate to seal the perforations, resulting in high manufacturing cost and the disadvantage that heat cannot directly act on the photovoltaic module but acts on the heat insulation board to cause energy loss.

[0005] The technical solution of the utility model to solve the technical problem is as follows:

[0006] A heating device for an electromagnetic heating photovoltaic module laminator comprises a heating plate for carrying, supporting and heating an electric photovoltaic module, the heating plate is made of magnetic conductive material, a heating plate body is provided with a laminating area and a side area, the side area is arranged around the laminating area, the laminating area is used to arrange the photovoltaic module, the side area comprises side area one and side area two which are respectively arranged on the lateral sides of the laminating area, and side area three and side area four which are arranged on the upper and lower sides of the laminating area, side area three and side area four occupy the lateral length of the heating plate, side area one and side area two are arranged between side area three and side area four, a plurality of longitudinal perforations are arranged in the heating plate body along the lateral direction of the heating plate, and the longitudinal perforations at the positions corresponding to side area one and side area two constitute the threading holes of side area one and the threading holes of side area two The longitudinal perforations in the area corresponding to the position of the laminating area constitute the laminating area threading holes, the two ends of the threading holes in the side area one, the two ends of the threading holes in the side area two, and the two ends of the threading holes in the laminating area are all connected through threading grooves, electromagnetic coils are wound in the threading holes in the side area one, the threading holes in the side area two, and the threading holes in the laminating area, the hole spacings of the threading holes in the side area one and the threading holes in the side area two are smaller than the hole spacings of the threading holes in the laminating area, so that when heated, the heating temperatures of the side areas one and two are higher than the heating temperature of the laminating area, and an auxiliary heating mechanism is arranged in the area corresponding to the positions of the side areas three and four, and the side areas three and four are heated by the auxiliary heating mechanism so that the heating temperatures of the side areas three and four are higher than the heating temperature of the laminating area;

[0007] The auxiliary heating mechanism includes transverse perforations arranged longitudinally in the heating plate, the positions of the transverse perforations correspond to the positions of the side areas three and four, electromagnetic coils are wound in the transverse perforations, and the spacing between the transverse perforations is equal to and smaller than the spacing between the threading holes in the lamination area so that the heating temperature of the side areas three and four is higher than the heating temperature of the lamination area during heating. The center line of the transverse perforations is parallel to the surface of the heating plate;

[0008] A patch-type electromagnetic heating sheet or a patch-type electric heating sheet is fixedly installed on the lower surface of the heating plate body at the position corresponding to the edge zone three and the edge zone four; or, a patch-type electromagnetic heating sheet and a patch-type electric heating sheet are fixedly installed on the lower surface of the heating plate body at the position corresponding to the edge zone three and the edge zone four, and the patch-type electromagnetic heating sheet and the patch-type electric heating sheet are staggered; the patch-type electromagnetic heating sheet includes an electromagnetic coil and a non-magnetic electromagnetic coil support, and a planar spiral coil groove is arranged on the surface of the electromagnetic coil support, and the inner circle of the coil groove is located at the center of the electromagnetic coil support, and the winding of the electromagnetic coil is located in the coil groove and arranged along the coil groove. Usually the electromagnetic coil support is in the shape of a plate. Bolt holes are arranged on the electromagnetic coil support;

[0009] Temperature measuring holes are respectively arranged on the heating plate at positions corresponding to the lamination area and each side area. The temperature measuring holes are blind holes, and temperature sensors are arranged in the temperature measuring holes. At least one electromagnetic heating controller is respectively arranged in one or more groups of electromagnetic coils in the lamination area and each side area.

[0010] The electromagnetic heating controller is connected to the temperature sensor signal, and the electromagnetic heating controller controls the electromagnetic coil heating according to the temperature measured by the temperature sensor;

[0011] The temperature measuring hole is vertically arranged with respect to the heating plate body, and occupies two-thirds to three-quarters of the thickness of the heating plate body;

[0012] An electromagnetic heating controller is provided for a group of electromagnetic coils in each edge area, and at least one temperature sensor is provided at a position corresponding to each electromagnetic coil;

[0013] The width of the side area is 100-400mm, the hole spacing of the threading holes in the side area 1 is 5-50mm, and the hole spacing of the threading holes in the side area 2 is 5-50mm; the hole spacing of the threading holes in the laminating area is 50-120mm; or the width of the side area is 300mm, the hole spacing of the threading holes in the side area 1 is 30mm, the hole spacing of the threading holes in the laminating area is 80mm, and the hole spacing of the threading holes in the side area 2 is equal to the hole spacing of the threading holes in the side area 1;

[0014] The hole spacing of the three threading holes in the side area is 5-50mm, and the hole spacing of the four threading holes in the side area is 5-50mm; and / or the longitudinal threading holes and the transverse threading holes are arranged to intersect; and / or the hole spacing of the three threading holes in the side area is 30mm, and the hole spacing of the four threading holes in the side area is equal to the hole spacing of the one threading hole in the side area.

[0015] An electromagnetic heating photovoltaic module laminator comprises a conveyor belt for carrying photovoltaic modules and a heating device for heating the photovoltaic modules. The heating device with the above structure is adopted, and the conveyor belt runs around the heating plate to transport the photovoltaic modules to above the heating plate.

[0016] The advantages and beneficial effects of the utility model are:

[0017] The electromagnetic heating photovoltaic module laminator and its heating device of the utility model are adopted. Since the heating device is a heating plate supporting the photovoltaic module, the electromagnetic coil is wound and arranged in the through hole in the magnetic heating plate body. Therefore, the heating plate body generates heat by itself under the action of the electromagnetic coil, and no other medium is needed for heat transfer. Therefore, the thermal efficiency is high and the heat loss is small. There is no need to set a through hole perpendicular to the heating plate body on the heating plate body. Therefore, it will not affect the vacuum pumping of the lamination chamber. The heating plate is divided into two inner and outer partitions, the inner layer is the lamination zone, and the outer layer is the edge zone. By making the heat source temperature of the edge zone higher than the heat source temperature of the lamination zone, the uneven temperature on the heating plate caused by the fast heat dissipation in the edge zone and the slow heat dissipation in the lamination zone can be improved. The problem that the temperature of the edge zone is lower than the temperature of the lamination zone due to the fast heat dissipation in the edge zone can be solved by increasing the heat source temperature of the edge zone, so that the temperature of each part of the heating plate tends to be uniform; the temperature of the heating plate between two adjacent perforations can be made uniform by reasonably setting the hole spacing of the perforations, so that the temperature in the edge zone of the heating plate and the temperature in the lamination zone are uniformly distributed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of a heating device for an electromagnetic heating photovoltaic module laminator of the utility model;

[0019] Figure 2 This is a schematic diagram of the electromagnetic coil winding structure of the heating device of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of an electromagnetic heating sheet embodiment of a layer heating device of the utility model;

[0021] Figure 4 This is a schematic structural diagram of another embodiment of the heating device for the electromagnetic heating photovoltaic module laminator of the utility model.

[0022] Description of Reference Numerals

[0023] 1. Heating plate; 101. Laminating area; 102. Side area one; 103. Side area two; 104. Side area three; 105. Side area four; 106. Temperature measuring hole; 107. Threading hole in laminating area; 108. Threading hole in side area one; 109. Threading hole in side area two; 1010. Threading hole in side area three; 1011. Threading hole in side area four; 2. Temperature measuring sensor; 3. Electromagnetic heating controller; 4. Electromagnetic coil; 6. Electromagnetic coil support; 7. Coil slot. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited by them. Figure 1 The directions shown are described below. Figure 1 , which is a schematic diagram of a top view of the heating plate.

[0025] The heating device and laminator structure of the utility model are described in detail below in conjunction with the drawings and embodiments. This embodiment is only a specific description of the inventive concept of the utility model, and is not a limitation of the inventive concept. Various modifications inspired by the inventive concept are within the protection scope of the utility model.

[0026] The electromagnetic heating device of the utility model comprises a heating plate 1 and an electromagnetic coil 4. The heating plate 1 is made of a material that can be electromagnetically heated, preferably a steel plate, carbon steel, etc. There are two large areas on the heating plate, namely a lamination area and a side area. The side area includes four areas, namely side area one, side area two, side area three and side area four. The four side areas are arranged around the periphery of the lamination area, wherein side area one and side area two are respectively located on both sides of the transverse direction of the lamination area, and side area three and side area four are located on both sides of the longitudinal direction of the lamination area and are located between side area one and side area two. During production, the heating plate 1 is first divided into 5 large areas, namely, a lamination area 101, i.e., A1xA2 range, side area one 102, i.e., A2xB1 range, side area two 103, i.e., A2xB2 range, side area three 104, i.e., C1x (A1+B1+B2) range, and side area four 105, i.e., C2x (A1+B1+B2) range. The lamination area 101 is used to place components, and the components are placed flat in the lamination area. Its size is determined according to the size and quantity of the lamination components, and it can be slightly larger than the outer circle boundary size of each component. The width of the side area 102, the side area 2 103, the side area 3 104 and the side area 4 105 is 100-400mm, preferably 300mm.

[0027] A plurality of perforations are arranged in parallel in the transverse direction of the plate body of the heating plate 1. Because they extend longitudinally, they are called longitudinal perforations. Each longitudinal perforation runs from one longitudinal end of the heating plate 1 to the other longitudinal end. The portion of the longitudinal perforation passing through the laminating area is called the laminating area threading hole 107, the portion passing through the side area 1 is called the side area 1 threading hole 108, and the portion passing through the side area 2 is called the side area 2 threading hole 109. Preferably, the hole spacing of the longitudinal perforations is 5-50mm for the side area 1 threading hole, preferably 30mm; the hole spacing of the side area 2 threading holes is the same as the hole spacing of the side area 1 threading holes; the hole spacing of the laminating area threading holes is 50-120mm, preferably 80mm. A plurality of transverse perforations are arranged in parallel along the longitudinal direction in the plate bodies of the side areas 3 and 4 of the heating plate. The portion of the transverse perforations passing through the side area 3 is called the side area 3 threading hole 1010, and the portion passing through the side area 4 is called the side area 4 threading hole 1011. Preferably, the hole spacing of the side area 3 threading holes and the side area 4 threading holes is the same as the hole spacing of the side area 1 threading holes. The diameters of the perforations located in each side area are equal.

[0028] The two ends of the threading holes in each zone are provided with threading grooves of corresponding lengths, which intersect with the threading holes in each zone, so that the winding wire in the coil can enter from one threading hole to another adjacent threading hole. Each threading hole is used for winding the electromagnetic coil 4. The winding method of the electromagnetic coil is as follows: Figure 2 As shown, Figure 2 The winding method of the coils in the threading holes in each zone is shown in FIG. The winding method of the coils in each threading hole is the same. Figure 2 The number of threading holes through which the middle coil is wound is only for reference, and is determined specifically according to the heating power of the coil. The coil is wound along the threading holes set in the board body, and the threading is only passed through the threading slot when the end of the threading hole enters from one threading hole to another. The number of turns of the wound coil depends on the specific temperature requirements. It is best to set a slot cover on the threading slot to enclose the winding in the threading slot, which is not only neat but also prevents heat loss. The principle for setting the number of electromagnetic coils is: in principle, one component corresponds to one group of electromagnetic coils in the lamination area, or multiple components correspond to one group of coils, or multiple groups of coils correspond to one component. There can be many variations here. In principle, one side area corresponds to one group of coils in the side area. In actual application, multiple groups of coils can also be used according to specific circumstances. In the transverse direction of the heating plate, the arrangement density of the heating coils in the lamination area is smaller than that in the side areas 1, 2, 3 and 4. Therefore, the heating temperatures in the side areas 1, 2, 3 and 4 are higher than that in the lamination area, and the heating temperatures in the side areas 1, 2, 3 and 4 can be consistent. In principle, each group of electromagnetic coils is connected to an electromagnetic heating controller 4. It should be noted that there is no electromagnetic coil wound in the longitudinal perforations corresponding to the side areas 3 and 4, and the longitudinal perforations in the above-mentioned areas are empty.

[0029] According to the number and position of coils, a temperature measuring hole 106 is opened on the heating plate for installing the temperature measuring sensor 2. The temperature measuring hole 106 is a blind hole and cannot penetrate the heating plate. The depth can be three quarters of the plate thickness. The hole is drilled from the bottom of the heating plate. The temperature measuring hole is generally perpendicular to the heating plate. In principle, a group of coils should correspond to at least one temperature measuring hole. It can also be based on the area occupied by the coils. When the area occupied by a group of coils is large, a group of coils can correspond to multiple temperature measuring holes. One temperature measuring hole corresponds to one temperature measuring sensor.

[0030] In the heating device adopting the structure of the utility model, the electromagnetic coil is arranged in the body of the heating plate. The heating plate generates heat by itself under the action of the coil, and no other medium is required for heat transfer. Therefore, the thermal efficiency and thermal utilization rate are high, and no auxiliary sealing plate is required, and the manufacturing cost is low. The edge area and the lamination area are arranged on the heating plate, and the density of the threading holes in each edge area around the lamination area is greater than the density of the threading holes in the lamination area. When the current and voltage of each coil are consistent, the heat source temperature of the edge area one, the edge area two, the edge area three, and the edge area four can be higher than the heat source temperature of the lamination area. This can prevent the occurrence of the phenomenon that the edge area temperature is lower than the lamination area temperature due to the rapid heat loss of the edge area, and can also prevent the problem that the temperature in the lamination area is uneven due to the low temperature of the edge area. In the lamination area, the wires are threaded through the parallel threading holes set in the heating plate. With this structure, the distance between the two threading holes is designed to make the threading holes as thin as possible. As long as the electromagnetic coil can pass through the threading holes, the heat of the heating plate between the two threading holes is relatively uniform, thus ensuring the uniformity of heating of the heating plate.

[0031] In the present invention, the threading hole is directly arranged in the heating plate body, and the center line of the hole is arranged parallel to the upper surface of the heating plate body. Each electromagnetic coil is wound and arranged in the threading hole and directly arranged in the heating plate body. The spacing between each coil in the edge area is equal. Therefore, the heating temperature in the edge area can be consistent, so that the overall thermal uniformity of the heating plate is better. The heating plate body itself is a magnetic conductive material that generates heat by itself, and the heat distribution of each part of the heating plate body is relatively uniform.

[0032] By adopting the technical solution of this patent, the lengths of the threading holes in side area 1 and side area 2 are equal to the length of the threading holes in the laminating area. The lengths of the threading holes in side area 3 and side area 4 are equal to the length of the heating plate. In this way, the threading holes in side area 1 and side area 2 intersect with the threading holes in side area 3 and side area 4, but the windings do not interfere with each other, ensuring the uniformity of the heat of the heating plate. Preferably, the longitudinal perforations are arranged along the length direction of the heating plate, so that the threading holes in the laminating area extend along the width direction, which can reduce the difficulty of threading the threading holes.

[0033] It is best to arrange the transverse threading holes and the longitudinal threading holes to intersect, and the number of turns of each coil is the same, so that the distance from the upper surface of the heating plate is equal, which helps to control the temperature evenly.

[0034] In order to reduce the number of perforations on the heating plate, no transverse perforations are required, and only longitudinal perforations are required. In order to achieve the temperature in side zone three and side zone four being consistent with the temperature in side zone one and side zone two, a patch-type electric heating plate or an electromagnetic heating plate is added to side zone three and side zone four. Specifically, patch-type electric heating plates are arranged in side zone three 104 and side zone four 105, and the patch-type electric heating plates are fixedly connected to the heating plate by bolts. The patch-type electric heating plate is located below the heating plate and is fixedly connected to the lower surface of the heating plate. The number of patch-type electric heating plates 5 in the side zone is determined according to the actual situation, and all side zones three and four can be covered. The number can be one or multiple, and it is recommended to install multiple plates. According to the distribution of the patch type electric heating sheet, a temperature measuring hole 106 is opened on the heating plate for installing the temperature measuring sensor 2. The temperature measuring hole 106 is a blind hole located below the heating plate, and the depth can be three quarters of the plate thickness. In principle, one patch type electric heating sheet 5 corresponds to at least one temperature measuring hole 106, and according to the area occupied by the patch type electric heating sheet, one patch type electric heating sheet corresponds to multiple temperature measuring holes. One temperature measuring hole corresponds to one temperature measuring sensor. The temperature of the edge zone three and the edge zone four is detected by the temperature measuring sensor. Under the adjustment of the control device, the temperature in the edge zone three and the edge zone four can be made consistent with the temperature in the edge zone one and the edge zone two, and both are consistent with the temperature of the lamination zone.

[0035] In the edge zone three and edge zone four, a patch type electromagnetic heating sheet can also be used as a temperature increasing device to replace the patch type electric heating sheet. The electromagnetic heating sheet preferably adopts the following structure, including an electromagnetic coil 4 and an electromagnetic coil support 6. The electromagnetic coil support is made of a non-magnetic material. A plane spiral coil groove is arranged on one side surface of the electromagnetic coil support. The inner circle of the coil groove is located at the center of the electromagnetic coil support. The winding of the coil is located in the coil groove and arranged along the coil groove. One end of the coil is located in the electromagnetic coil support, and the other end is located outside the electromagnetic coil support. Usually, the electromagnetic coil support is plate-shaped. Bolt holes are arranged on the electromagnetic coil support. The patch type electromagnetic heating sheet is fixed to the position corresponding to the edge zone three and the edge zone four on the lower surface of the heating plate by bolts and bolt holes. When there are multiple electromagnetic coil supports, each electromagnetic coil support is preferably arranged in the same and uniform manner. The structure of the patch type electric heating sheet is a prior art, which also includes a tray, and an electric heating wire groove is arranged on one side surface of the tray. The electric heating wire groove is arranged in a plane spiral shape, and the electric heating wire is routed in the electric heating wire groove. Bolt holes are arranged on the tray. When multiple electric heating plates are provided, the electric heating plates are preferably identical and evenly arranged. The electric heating wire is usually a resistance wire.

[0036] It is also possible to use a combination of patch-type electric heating sheets and patch-type electromagnetic heating sheets. When used in combination, it is best to set the electric heating sheets and the electromagnetic heating sheets at intervals to facilitate even heat distribution.

Claims

1. A heating device for an electromagnetically heated photovoltaic module laminator, comprising a heating plate for supporting and heating an electric photovoltaic module, characterized in that: The heating plate is made of magnetic conductive material, and the heating plate body is provided with a lamination area and a side area, and the side area is arranged around the lamination area, and the lamination area is used to set the photovoltaic module, and the side area includes side area one and side area two located on both sides of the lamination area in the horizontal direction, and side area three and side area four located on the upper and lower sides of the lamination area, and side area three and side area four occupy the horizontal length of the heating plate, and side area one and side area two are located between side area three and side area four, and a plurality of longitudinal perforations are arranged in the heating plate body along the horizontal direction of the heating plate, and the longitudinal perforations at the corresponding positions of side area one and side area two constitute the threading holes of side area one and the threading holes of side area two, and the longitudinal perforations in the area corresponding to the position of the lamination area constitute The laminating area threading holes, the two ends of the threading holes of side area one, the two ends of the threading holes of side area two, and the two ends of the threading holes of the laminating area are all connected through threading grooves, electromagnetic coils are wound in the threading holes of side area one, the threading holes of side area two, and the threading holes of the laminating area, the hole spacing between the threading holes of side area one and the threading holes of side area two is smaller than the hole spacing between the threading holes of the laminating area, so that the heating temperatures of side area one and side area two are higher than the heating temperature of the laminating area during heating, and an auxiliary heating mechanism is arranged in the area corresponding to the positions of side area three and side area four, and side area three and side area four are heated by the auxiliary heating mechanism so that the heating temperatures of side area three and side area four are higher than the heating temperature of the laminating area.

2. The heating device for an electromagnetic heating photovoltaic module laminator according to claim 1, characterized in that: The auxiliary heating mechanism includes transverse perforations located in the heating plate and arranged longitudinally along the heating plate. The positions of the transverse perforations correspond to the positions of side areas three and four. Electromagnetic coils are wound in the transverse perforations. The spacing between the transverse perforations is equal to and smaller than the spacing between the threading holes in the lamination area so that the heating temperature of side areas three and four is higher than the heating temperature of the lamination area during heating. The center line of the transverse perforations is parallel to the surface of the heating plate.

3. The heating device for an electromagnetic heating photovoltaic module laminator according to claim 1, characterized in that: A patch-type electromagnetic heating sheet or a patch-type electric heating sheet is fixedly arranged on the lower surface of the heating plate body at the position corresponding to the edge zone three and the edge zone four; or, a patch-type electromagnetic heating sheet and a patch-type electric heating sheet are fixedly arranged on the lower surface of the heating plate body at the position corresponding to the edge zone three and the edge zone four, and the patch-type electromagnetic heating sheet and the patch-type electric heating sheet are staggered; the patch-type electromagnetic heating sheet includes an electromagnetic coil and a non-magnetic electromagnetic coil support, and a planar spiral coil groove is arranged on the surface of the electromagnetic coil support, the inner circle of the coil groove is located at the center of the electromagnetic coil support, the winding of the electromagnetic coil is located in the coil groove and arranged along the coil groove, the electromagnetic coil support is plate-shaped, and bolt holes are arranged on the electromagnetic coil support.

4. The heating device for an electromagnetic heating photovoltaic module laminator according to claim 1, characterized in that: Temperature measuring holes are respectively arranged on the heating plate at positions corresponding to the lamination area and each edge area. The temperature measuring holes are blind holes. Temperature sensors are arranged in the temperature measuring holes. One or more groups of electromagnetic coils in the lamination area and each edge area are respectively provided with at least one electromagnetic heating controller.

5. The heating device for an electromagnetic heating photovoltaic module laminator according to claim 4, characterized in that: The electromagnetic heating controller is connected to the temperature sensor signal, and the electromagnetic heating controller controls the heating of the electromagnetic coil according to the temperature measured by the temperature sensor.

6. The heating device for an electromagnetic heating photovoltaic module laminator according to claim 4, characterized in that: The temperature measuring hole is arranged vertically to the heating plate body, and occupies two-thirds to three-quarters of the thickness of the heating plate body.

7. The heating device for an electromagnetic heating photovoltaic module laminator according to claim 2, characterized in that: An electromagnetic heating controller is arranged for a group of electromagnetic coils in each edge area, and at least one temperature sensor is arranged at a position corresponding to each electromagnetic coil.

8. The heating device for an electromagnetic heating photovoltaic module laminator according to claim 1, characterized in that: The width of the side zone is 100-400mm, the hole spacing of the threading holes in side zone one is 5-50mm, and the hole spacing of the threading holes in side zone two is 5-50mm; the hole spacing of the threading holes in the laminating zone is 50-120mm; or the width of the side zone is 300mm, the hole spacing of the threading holes in side zone one is 30mm, the hole spacing of the threading holes in the laminating zone is 80mm, and the hole spacing of the threading holes in side zone two is equal to the hole spacing of the threading holes in side zone one.

9. The heating device for an electromagnetic heating photovoltaic module laminator according to claim 2, characterized in that: The hole spacing of the three threading holes in the side area is 5-50mm, and the hole spacing of the four threading holes in the side area is 5-50mm; and / or the longitudinal threading holes and the transverse threading holes are arranged to intersect; and / or the hole spacing of the three threading holes in the side area is 30mm, and the hole spacing of the four threading holes in the side area is equal to the hole spacing of the one threading hole in the side area.

10. An electromagnetic heating photovoltaic module laminator, comprising a conveyor belt for carrying photovoltaic modules and a heating device for heating the photovoltaic modules, characterized in that: In the heating device according to any one of claims 1 to 9, a conveyor belt runs around the heating plate to transport the photovoltaic module to above the heating plate.

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