A laminating device and its application in the production of solar photovoltaic modules

Abstract

The invention discloses a laminating device and its application in the production of solar photovoltaic modules, and relates to the technical field of laminating, including a frame, a vacuum device and a constant temperature device, wherein a sealing frame is fixed on the frame, a pressing plate is arranged at the upper end of the sealing frame, a hydraulic rod is fixed at the upper end of the pressing plate, the upper end of the hydraulic rod is fixedly connected to the frame, a limiting frame is fixed inside the sealing frame, a floating component is slidably connected inside the limiting frame, an extrusion component and a guide component are arranged on the inner wall of the sealing frame, a debonding component is connected to one end of the extrusion component located inside the sealing frame, the floating component comprises a floating plate, a plurality of adsorption fixing components are slidably connected to the upper end of the floating plate, the floating plate is slidably connected to the limiting frame, a current balancing grid is fixed at the lower end of the floating plate, a lower sealing plate fixedly connected to the limiting frame is arranged at the lower end of the current balancing grid, an air chamber is arranged inside the floating plate, and the limiting frame and the slope are used for cooperation, and preliminary alignment is performed when the battery cell, the cover glass and the back plate are placed on the floating plate through an external device.

Description

Technical Field

[0001] The invention relates to the technical field of lamination, in particular to a lamination device and its application in the production of solar photovoltaic components. Background Art

[0002] The photovoltaic module laminating device is a device used to press and solidify the various layers of photovoltaic modules. It is mainly composed of a conveying system, a vacuum system, a heating system, a pneumatic system and a control system. When it is used, the laid multi-layer solar photovoltaic modules need to be placed on the conveying table, and then transported to the inside of the laminating device through the conveying table. Then the device applies a certain pressure on the outer surface of the module, and presses them tightly together under heating to achieve lamination.

[0003] Chinese patent application number CN201721903090.0 discloses a photovoltaic module laminating heating plate and a laminating machine, which relate to the field of solar cell technology. The photovoltaic module laminating heating plate includes a plate body, the plate body is provided with a bearing area for bearing the component, the plate body is provided with a plurality of adsorption holes, the plurality of adsorption holes are provided at least corresponding to the edge of the bearing area, and the adsorption holes are connected to a first vacuum device. Adsorption holes are provided in the working area of ​​the top surface of the photovoltaic module laminating heating plate, and the adsorption holes are provided at least along the edge of the working area. When the component is placed on the heating plate, the component is fixed by vacuum adsorption through the adsorption holes to avoid deformation and warping of the edge of the component after heating, thereby ensuring that the component is in full contact with the heating plate, ensuring the uniformity of the surface temperature of the component, and facilitating improving the lamination efficiency of the component.

[0004] Chinese patent application number CN202410255224.0, a laminating device, laminating method and laminating machine for photovoltaic modules, relates to the technical field of laminating machines, and specifically relates to a laminating device, laminating method and laminating machine for photovoltaic modules, wherein the laminating device comprises: an upper chamber, a middle chamber and a lower chamber; the upper chamber, the middle chamber and the lower chamber are all provided with vacuum pumping equipment and inflation equipment, and the middle chamber is isolated from the upper chamber and the lower chamber respectively by a silica gel plate; a heating plate is provided at the upper end of the upper vacuum chamber; a cooling plate is provided at the lower end of the lower vacuum chamber. The present application can complete the two processes of heating lamination and cooling lamination in a closed laminating device, and is in a completely vacuum compression state during the conversion process of heating lamination and cooling lamination, thereby preventing the problem of wrinkles on the surface of the film of the photovoltaic module when switching between hot and cold. The present application also has the characteristics of small footprint, energy saving, simple structure, easy maintenance and repair, and high product yield.

[0005] The following problems may occur during the use of the above solution:

[0006] 1. When laminating the battery cells, cover glass and backplane, the battery cells, cover glass and backplane cannot be limited and fixed. When melting the EVA glue, the EVA glue will produce fluidity after melting. When laminating the battery cells, cover glass and backplane, due to the fluidity of the melted EVA glue, the battery cells, cover glass and backplane will slide relative to each other during the lamination process, resulting in the battery cells, cover glass and backplane cannot be aligned, thereby affecting the production quality.

[0007] 2. When laminating the battery cells, cover glass and back panel, due to the overall force, there is gas between the battery cells, cover glass and back panel, which makes the melted EVA glue unable to adhere to each other, and then causes hollowing between the battery cells, cover glass and back panel.

[0008] 3. In order to ensure that the battery cells, cover glass and back panel are completely bonded with EVA glue, an excess of EVA glue will be placed. After the battery cells, cover glass and back panel are laminated, some EVA glue will overflow, resulting in glue strips on the edge of the photovoltaic module, which will need to be processed later, and the steps are cumbersome. Summary of the invention

[0009] In view of the above problems, the present invention provides a lamination device and its application in the production of solar photovoltaic modules, thereby solving the above problems.

[0010] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laminating device and its application in the production of solar photovoltaic modules, comprising a frame, a vacuum device and a constant temperature device, a sealing frame is fixed on the frame, a pressing plate is arranged at the upper end of the sealing frame, a hydraulic rod is fixed at the upper end of the pressing plate, the upper end of the hydraulic rod is fixedly connected to the frame, a limiting frame is fixed inside the sealing frame, a floating component is slidably connected inside the limiting frame, an extrusion component and a guide component are arranged on the inner wall of the sealing frame, and a debonding member is connected to one end of the extrusion component located inside the sealing frame;

[0011] The floating assembly includes a floating plate, the upper end of which is slidably connected to a plurality of adsorption and fixing assemblies, the floating plate is slidably connected to a limit frame, a current equalizing grid is fixed to the lower end of the floating plate, the lower end of the current equalizing grid is provided with a lower sealing plate fixedly connected to the limit frame, an air chamber is provided inside the floating plate, the adsorption and fixing assemblies are communicated with the air chamber, and the lower end of the floating plate is communicated with two symmetrically arranged bellows, which penetrate the lower sealing plate and are communicated with a vacuum device;

[0012] The extrusion assembly comprises a piston cylinder, a piston rod is slidably connected to the interior of the piston cylinder, an air passage is opened inside the piston rod, a sealing ring is fixed on the piston rod, a compression spring is arranged between the sealing ring and the piston cylinder, and the air passage is connected to the vacuum device;

[0013] The adsorption and fixing assembly includes a floating column, a head is fixed to the upper end of the floating column, a slidingly connected plug is provided inside the head, a plurality of columns are fixed to the lower end of the head, a fixed plate is fixed to the lower end of the column, the fixed plate is fixedly connected to the floating column, a first spring and a top column are provided at the lower end of the fixed plate, the first spring and the top column are located in the air chamber, and the first spring and the top column are both fixedly connected to the floating plate.

[0014] Preferably, the vacuum device is connected to an upper air pipe, and the upper air pipe is connected to a lower air pipe through a pipe. A valve is provided on the pipe connecting the upper air pipe and the lower air pipe, and the valve is used to control the ventilation of the lower air pipe. The upper air pipe is connected to a bellows, and the lower air pipe is connected to the airway to extract the gas inside the sealing frame.

[0015] Preferably, a gap is provided between the floating plate and the lower sealing plate, the constant temperature device is connected to the gap between the floating plate and the lower sealing plate through a pipeline, a valve is provided on the pipeline connecting the constant temperature device and the gap, and a small hole is opened on the current equalizing grid.

[0016] Preferably, the degumming part includes an extrusion strip, which is fixedly connected to the piston rod, and a U-shaped steel bar is fixed inside the extrusion strip, and the steel bar is fixedly connected to the piston rod. The gap formed by the steel bar and the extrusion strip is connected to the airway, and a plurality of through holes are opened on the side of the extrusion strip away from the piston cylinder, and the through holes are truncated cone-shaped, and the side with a larger diameter of the through holes faces the steel bar, and the floating plate is tangent to the lower end of the extrusion strip when it is raised to the highest point.

[0017] Preferably, the upper end of the limit frame is provided with a folded edge, the upper end of the folded edge is provided with a slope, the lower end of the limit frame is fixed with a base frame, the base frame is fixedly connected to the sealing frame, the limit frame is fixedly connected to the sealing frame through the base frame, the lower end of the base frame is provided with a sealing plate rotatably connected to the sealing frame, the upper end of the sealing plate is provided with a sealing strip, the outer side of the sealing plate is fixed with a threaded rod, and the threaded rod is threadedly connected with a counterweight nut.

[0018] Preferably, the guide assembly includes a guide cylinder, a guide rod is slidably connected inside the guide cylinder, a compression spring is sleeved on the guide rod, one end of the compression spring is fixedly connected to the sealing frame, the other end of the compression spring is fixedly connected to the guide rod, and one end of the guide rod is fixedly connected to the extrusion strip and steel bar of the degumming part.

[0019] Preferably, the lower end of the floating column is provided with a folded edge, the head is provided with a plurality of adsorption holes along its circumference, the interior of the head is provided with a cavity, a second spring is placed in the cavity, the plug is slidably connected in the cavity, the second spring is abutted against the plug, a hole is provided on the fixed plate, the plug is in a truncated cone shape, and the plug corresponds to the hole on the fixed plate.

[0020] A heating plate is fixed at the lower end of the pressing plate, and a pressing block is fixed at the lower end of the heating plate. The thickness of the lower end of the pressing block decreases from the inside to the outside. An upper sealing groove is opened at the lower end of the pressing plate, and upper pressing strips fixedly connected to the pressing plate are provided on both inner and outer sides of the upper sealing groove.

[0021] Preferably, a lower pressure strip corresponding to the upper sealing groove is fixed to the upper end of the sealing frame, and lower sealing grooves are provided on the inner and outer sides of the lower pressure strip, the lower sealing groove corresponds to the upper pressure strip, the lower pressure strip and the upper pressure strip are made of rubber, and one side of the sealing frame is connected to a pressure relief valve.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Through the cooperation of the limit frame and the slope, the battery cell, cover glass and back plate are initially aligned when placed on the floating plate by an external device, and the inside of the sealing frame is evacuated by the vacuum device, so that the piston rod and the guide rod move toward the inside of the sealing frame, thereby driving the extrusion bar to move, so that the extrusion bar clamps and fixes the battery cell, cover glass and back plate, thereby preventing the battery cell, cover glass and back plate from relative displacement when the pressing block is laminating the battery cell, cover glass and back plate, and at the same time fixes it by the adsorption fixing component to prevent the pressing block from lifting the laminated battery cell, cover glass and back plate when it is raised.

[0024] 2. Hot water is flowed into the gap between the floating plate and the lower sealing plate through the constant temperature device, thereby heating the floating plate and the heating plate. The floating plate and the heating plate melt the EVA glue to ensure that the battery cell, the cover glass and the back plate are adhered and fixed to each other, and the thickness of the lower end of the pressing block is reduced from the inside to the outside. In this way, when the pressing block contacts the battery cell, the cover glass and the back plate, the central part of the pressing block will first contact the battery cell, the cover glass and the back plate, and then the central part of the battery cell, the cover glass and the back plate will be laminated. As the pressing block is pressed down, the battery cell, the cover glass and the back plate will be laminated from the inside to the outside, and the air between the battery cell, the cover glass and the back plate will be squeezed out to ensure that the battery cell, the cover glass and the back plate are completely adhered to prevent hollowing between the battery cell, the cover glass and the back plate.

[0025] 3. By aligning the through hole with the gap between the battery cell, the cover glass and the back plate, when the vacuum device is used for evacuation, the gas in the gap between the battery cell, the cover glass and the back plate can be extracted to prevent hollowing after the battery cell, the cover glass and the back plate are adhered. At the same time, the through hole absorbs the corresponding glue into the through hole, and the through hole is a truncated cone, and the side with a larger diameter of the through hole faces the steel bar, and then after the glue solidifies, it is connected to the battery cell, the cover glass and the back plate only through one point, and the glue point can be separated from the battery cell, the cover glass and the back plate by falling through the floating plate, so as to achieve the effect of removing excess glue. At the same time, by utilizing the negative pressure inside the sealing frame, the pressure relief valve is opened to allow external gas to quickly enter the interior of the sealing frame, and then impact the glue in the through hole, and slide out from the steel bar, and finally accumulate at the lower end of the sealing frame. When a certain amount of glue points are stored at the lower end of the sealing frame, the balance of the sealing plate is broken and rotated to discharge the glue points. After the glue points are discharged, the sealing plate is restored by the cooperation of the counterweight nut, and the sealing frame continues to be sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the lamination of the present invention;

[0028] Figure 3 It is an overall schematic diagram of the pressure-bearing part of the present invention;

[0029] Figure 4 It is a partial enlarged schematic diagram of the present invention;

[0030] Figure 5 It is a partial enlarged schematic diagram of the present invention;

[0031] Figure 6 It is a cross-sectional schematic diagram of the guide tube of the present invention;

[0032] Figure 7 It is a partial cross-sectional schematic diagram of the sealing frame of the present invention;

[0033] Figure 8 It is a partial enlarged schematic diagram of the present invention;

[0034] Fig. 9 It is a partial cross-sectional schematic diagram of the floating column of the present invention;

[0035] Fig.10 It is a schematic cross-sectional view of the entire pressing plate of the present invention.

[0036] Notes in the figure: 1. Frame; 2. Sealing frame; 3. Pressing plate; 4. Extrusion strip; 5. Piston cylinder; 6. Guide cylinder; 7. Limiting frame; 8. Floating plate; 9. Floating column;

[0037] 11. Hydraulic rod; 12. Vacuum device; 13. Constant temperature device;

[0038] 21. Pressure relief valve; 22. Base frame; 23. Lower pressure strip; 24. Lower sealing groove; 25. Sealing plate; 26. Threaded rod; 27. Counterweight nut;

[0039] 31. Upper pressure strip; 32. Upper sealing groove; 33. Heating plate; 34. Press block;

[0040] 41. Steel bar; 42. Through hole;

[0041] 51. piston rod; 52. airway; 53. sealing ring; 54. compression spring;

[0042] 61. Guide rod; 62. Compression spring;

[0043] 71. Slope;

[0044] 81. current balancing grid; 82. lower sealing plate; 83. air chamber; 84. bellows;

[0045] 91. Head; 92. Column; 93. Fixed plate; 94. First spring; 95. Top column;

[0046] 121, upper trachea; 122, lower trachea;

[0047] 911, adsorption hole; 912, cavity; 913, second spring; 914, plug. DETAILED DESCRIPTION

[0048] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0049] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A laminating device and its application in the production of solar photovoltaic modules, comprising a frame 1, a vacuum device 12 and a constant temperature device 13, a sealing frame 2 is fixed on the frame 1, a pressing plate 3 is arranged on the upper end of the sealing frame 2, a hydraulic rod 11 is fixed on the upper end of the pressing plate 3, the upper end of the hydraulic rod 11 is fixedly connected to the frame 1, the hydraulic rod 11 is extended, and the pressing plate 3 is pressed against the battery cell, the cover glass and the back plate, so that the battery cell, the cover glass and the back plate are laminated, and the battery cell, the cover glass and the back plate are connected and fixed to each other, and a limiting frame 7 is fixed inside the sealing frame 2, and the limiting frame 7 limits the battery cell, the cover glass and the back plate The battery cell, cover glass and back plate are transported to the limit frame 7 through an external conveying device. The limit frame 7 adjusts the battery cell, cover glass and back plate to align them. After that, the battery cell, cover glass and back plate slide onto the floating plate 8. A floating component is slidably connected inside the limit frame 7. The floating component fixes the battery cell, cover glass and back plate and drives them to move up and down. After the battery cell, cover glass and back plate are laminated, they are driven to move downward, thereby completing the separation of excess glue points from the battery cell, cover glass and back plate. The inner wall of the sealing frame 2 is provided with an extrusion component and a guide component. The end of the extrusion component located inside the sealing frame 2 is connected to a glue removal component.

[0050] See also Figure 2 , Figure 3 , Figure 4 and Figure 7The floating assembly includes a floating plate 8, and a plurality of adsorption and fixing assemblies are slidably connected to the upper end of the floating plate 8, which is fixed by the adsorption and fixing assemblies to prevent the pressing block 34 from lifting the laminated battery cells, cover glass and back plate when it is lifted. The floating plate 8 is slidably connected to the limit frame 7, and a current balancing grid 81 is fixed to the lower end of the floating plate 8. The lower end of the current balancing grid 81 is provided with a lower sealing plate 82 fixedly connected to the limit frame 7. An air chamber 83 is provided inside the floating plate 8, and the adsorption and fixing assembly is communicated with the air chamber 83. The lower end of the floating plate 8 is connected with two symmetrically arranged bellows 84, and the bellows 84 penetrates the lower sealing plate 82 and is communicated with the vacuum device 12. A gap is provided between the floating plate 8 and the lower sealing plate 82. The thermostatic device 13 is provided with a pump inside, and a heat source is input into the gap between the floating plate 8 and the lower sealing plate 82 through the pump, which is conducive to lifting the floating plate 8 and making the battery cells and cover glass on the floating plate 8 The back plate is raised to facilitate the extrusion assembly to extrude and fix the battery cell, cover glass and back plate, and at the same time, the heat source is extracted from the gap between the floating plate 8 and the lower sealing plate 82, so that the floating plate 8 drives the battery cell, cover glass and back plate to fall, and the excess glue on the edge of the battery cell, cover glass and back plate is removed by cooperating with the glue removal component. The constant temperature device 13 is connected with the floating plate 8 and the lower sealing plate 82 through a pipeline, and a valve is provided on the pipeline connecting the constant temperature device 13 and the gap. Hot water flows into the gap between the floating plate 8 and the lower sealing plate 82 through the constant temperature device 13, so that the floating plate 8 is heated, and the heating plate 33 is heated at the same time. The floating plate 8 and the heating plate 33 melt the EVA glue to ensure that the battery cell, cover glass and back plate are adhered and fixed to each other. The current balancing grid 81 is provided with small holes, and the current balancing grid 81 disperses the input heat source to make it evenly dispersed to prevent the floating plate 8 from being locally overheated.

[0051] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Fig.10Considering that the EVA glue needs to be melted to fix the battery cell, the cover glass and the back plate, the vacuum device 12 is connected to an upper air pipe 121, and the upper air pipe 121 is connected to a lower air pipe 122 through a pipe. A valve is provided on the pipe connecting the upper air pipe 121 and the lower air pipe 122, and the valve is used to control whether the lower air pipe 122 is ventilated. The upper air pipe (121) is connected to the bellows (84), and the lower air pipe 122 is connected to the airway 52 to extract the gas inside the sealing frame (2). The sealing frame is ventilated by the vacuum device 12. 2 is vacuumed inside, so that the piston rod 51 and the guide rod 61 extend out, and the piston rod 51 and the guide rod 61 extend out to drive the extrusion bar 4 to squeeze and fix the battery cell, the cover glass and the back plate, so as to prevent relative displacement between the battery cell, the cover glass and the back plate when the battery cell, the cover glass and the back plate are laminated, and at the same time, the flow of gas is controlled by the valve to achieve different effects. A heating plate 33 is fixed at the lower end of the pressing plate 3, and the EVA glue is melted by the heating plate 33 to ensure that the battery cell, the cover glass and the back plate are fixed during lamination.

[0052] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , considering that the battery cell, cover glass and back plate are completely adhered by EVA glue, excessive EVA glue will be placed, and after the battery cell, cover glass and back plate are laminated, part of the EVA glue will overflow, resulting in glue strips on the edge of the photovoltaic module, which needs to be processed later, and the steps are cumbersome. The glue removal part includes an extrusion strip 4, which is fixedly connected to the piston rod 51, and a U-shaped steel strip 41 is fixed inside the extrusion strip 4, and the steel strip 41 is fixedly connected to the piston rod 51. The gap formed by the steel strip 41 and the extrusion strip 4 is connected to the airway 52, and a plurality of through holes 42 are opened on the side of the extrusion strip 4 away from the piston cylinder 5, and the through holes 42 are truncated cone-shaped, and the side with a larger diameter of the through holes 42 faces Towards the steel bar 41, the floating plate 8 is tangent to the lower end of the extrusion bar 4 when it is raised to the highest point, and by aligning the through hole 42 with the gap between the battery cell, the cover glass and the back plate, when the vacuum device 12 is used for exhaust, the gas in the gap between the battery cell, the cover glass and the back plate can be extracted to prevent hollowing after the battery cell, the cover glass and the back plate are adhered. At the same time, the through hole 42 sucks the corresponding glue into the through hole 42, and the through hole 42 is a truncated cone, and the larger diameter side of the through hole 42 faces the steel bar 41, and then after the glue solidifies, it is connected to the battery cell, the cover glass and the back plate only by one point, and the glue point can be separated from the battery cell, the cover glass and the back plate by falling through the floating plate 8, thereby achieving the effect of removing excess glue.

[0053] See also Figure 5 , Figure 6 and Fig.10 Considering that the battery cell, cover glass and back plate need to be in a negative pressure chamber when laminating, it is necessary to ensure that the air between the battery cell, cover glass and back plate is discharged. In order to ensure that the negative pressure inside the sealing frame 2 is normal, it is necessary to seal the connection. The lower end of the limit frame 7 is fixed with a bottom frame 22, and the bottom frame 22 is fixedly connected to the sealing frame 2. The limit frame 7 is fixedly connected to the sealing frame 2 through the bottom frame 22. The lower end of the bottom frame 22 is provided with a sealing plate 25 rotatably connected to the sealing frame 2. The upper end of the plate 25 is provided with a sealing strip, and a threaded rod 26 is fixed on the outer side of the sealing plate 25, and a counterweight nut 27 is threadedly connected to the threaded rod 26. By utilizing the negative pressure inside the sealing frame 2, the pressure relief valve 21 is opened to allow external gas to quickly enter the interior of the sealing frame 2, thereby impacting the glue in the through hole 42, and sliding out from the steel strip 41, and finally accumulating at the lower end of the sealing frame 2. When a certain amount of glue dots are stored at the lower end of the sealing frame 2, the balance of the sealing plate 25 is broken and it rotates to discharge the glue dots. After discharge, the sealing plate 25 is restored by the cooperation of the counterweight nut 27 to continue to seal the sealing frame 2. The lower end of the pressing plate 3 is provided with an upper sealing groove 32. The inner and outer sides of the upper sealing groove 32 are provided with an upper pressure strip 31 fixedly connected to the pressing plate 3. The upper end of the sealing frame 2 is fixed with a lower pressure strip 23 corresponding to the upper sealing groove 32. The inner and outer sides of the lower pressure strip 23 are provided with a lower sealing groove 24. The lower sealing groove 24 corresponds to the upper pressure strip 31. The lower pressure strip 23 and the upper pressure strip 31 are made of rubber. The lower pressure strip 23 and the upper pressure strip 31, when the pressure plate 3 is pressed down, the upper pressure strip 31 will gradually be inserted into the lower sealing groove 24, and the lower pressure strip 23 will be inserted into the upper sealing groove 32, thereby completing the sealing of the connection with the sealing frame 2. As the pressure plate 3 continues to fall, the battery cells, cover glass and back plate are laminated, and the upper pressure strip 31 and the lower pressure strip 23 will be plugged more tightly to ensure the sealing of the sealing frame 2. At the same time, a sealing strip is set on the sealing plate 25 to ensure that the bottom of the sealing frame 2 is sealed to prevent air leakage.

[0054] See also Figure 3 , Figure 4 and Figure 5 and Figure 7, considering that when laminating the battery cell, the cover glass and the back plate, the battery cell, the cover glass and the back plate cannot be limited and fixed, when the EVA glue is melted, the EVA glue will produce fluidity after melting. When laminating the battery cell, the cover glass and the back plate, due to the fluidity of the EVA glue after melting, the battery cell, the cover glass and the back plate will slide relative to each other during the lamination process, resulting in the battery cell, the cover glass and the back plate being unable to be aligned, thereby affecting the production quality, the upper end of the limit frame 7 is provided with a folding edge, and the folding edge limits the floating plate 8 to prevent the floating plate 8 from being limited The upper end of the folded edge is provided with a slope 71, the extrusion assembly includes a piston cylinder 5, the interior of the piston cylinder 5 is slidably connected with a piston rod 51, an airway 52 is provided inside the piston rod 51, a sealing ring 53 is fixed on the piston rod 51, a compression spring 54 is provided between the sealing ring 53 and the piston cylinder 5, the airway 52 is connected with the vacuum device 12, and the limiting frame 7 and the slope 71 are cooperated to perform preliminary alignment when the battery cell, the cover glass and the back plate are placed on the floating plate 8 by an external device, and the sealing frame 2 is aligned by the vacuum device 12 The interior is vacuumed to move the piston rod 51 and the guide rod 61 toward the inner side of the sealing frame 2, thereby driving the extrusion bar 4 to move, so that the extrusion bar 4 clamps and fixes the battery cell, the cover glass and the back plate, so that the pressing block 34 prevents relative displacement between the battery cell, the cover glass and the back plate when laminating the battery cell, the cover glass and the back plate. The guide assembly includes a guide cylinder 6, in which a guide rod 61 is slidably connected, and a compression spring 62 is sleeved on the guide rod 61. One end of the compression spring 62 is fixedly connected to the sealing frame 2, and the other end of the compression spring 62 is fixedly connected to the sealing frame 2. One end is fixedly connected to the guide rod 61, and one end of the guide rod 61 is fixedly connected to the extrusion strip 4 and the steel strip 41 of the debonding part. When the guide rod 61 in the guide assembly slides, the compression spring 62 is compressed, and the guide rod 61 guides the extrusion strip 4 to make the extrusion strip 4 move smoothly, thereby making the extrusion strip 4 clamp and fix the battery cell, cover glass and back plate. When the internal pressure of the sealing frame 2 is normal, the compression spring 62 moves in the opposite direction against the guide rod 61, making the extrusion strip 4 leave the battery cell, cover glass and back plate, thereby releasing the fixation of the battery cell, cover glass and back plate.

[0055] See also Figure 3 , Figure 4 , Figure 8 and Fig. 9, considering that after the battery cell, cover glass and back plate are laminated, the pressing block 34 will be adhered to the battery cell, cover glass and back plate, and then the pressing block 34 will lift the laminated battery cell, cover glass and back plate when it is lifted, the adsorption and fixing assembly includes a floating column 9, a sealing head 91 is fixed to the upper end of the floating column 9, a plug 914 with a sliding connection is provided inside the sealing head 91, a plurality of columns 92 are fixed to the lower end of the column 92, a fixing plate 93 is fixed to the lower end of the column 92, the fixing plate 93 is fixedly connected to the floating column 9, and the fixing The lower end of the plate 93 is provided with a first spring 94 and a top column 95, the first spring 94 and the top column 95 are located in the air chamber 83, the first spring 94 and the top column 95 are fixedly connected to the floating plate 8, the lower end of the floating column 9 is provided with a folded edge, the head 91 is provided with a plurality of adsorption holes 911 along its circumference, the head 91 is provided with a cavity 912 inside, a second spring 913 is placed in the cavity 912, the plug 914 is slidably connected in the cavity 912, the second spring 913 is against the plug 914, the fixed plate 93 is provided with a hole, the plug 914 is truncated cone-shaped, and the plug 914 corresponds to the hole on the fixing plate 93. When the vacuum device 12 is used for vacuuming, negative pressure will appear in the air chamber 83, thereby causing the floating column 9 to move downward. After the floating column 9 moves downward, the first spring 94 is compressed, and at the same time, the floating column 9 continues to move downward, and the top column 95 will move upward against the plug 914, thereby connecting with the air chamber 83 and the adsorption hole 911, and then the battery cell, cover glass and back plate placed on the floating column 9 are adsorbed and fixed. When the plug 914 moves upward, the second spring 913 is compressed. When the battery cell, cover glass and back plate After lamination is completed, the interior of the sealing frame 2 is depressurized, and then the air chamber 83 is depressurized through the through hole 42, the upper air pipe 121 and the lower air pipe 122. While the air chamber 83 is depressurized, the first spring 94 recovers and pushes the floating column 9 to rise, pushing the battery cells, cover glass and back plate away from the floating plate 8 to prevent the battery cells, cover glass and back plate from sticking to the floating plate 8, making it convenient to remove the laminated battery cells, cover glass and back plate. When the floating column 9 rises to a certain height, the second spring 913 pushes the plug 914 to move, and the plug 914 blocks the hole on the fixed plate 93.

[0056] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig.10Considering that when the battery cell, the cover glass and the back plate are laminated, due to the overall force, there is gas between the battery cell, the cover glass and the back plate, which causes the melted EVA glue to be unable to adhere to each other completely, and then causes hollowing between the battery cell, the cover glass and the back plate, a pressing block 34 is fixed at the lower end of the heating plate 33, and the thickness of the lower end of the pressing block 34 decreases from the inside to the outside. A pressure relief valve 21 is connected to one side of the sealing frame 2 to reduce the thickness of the lower end of the pressing block 34 from the inside to the outside. The arrangement is reduced in sequence. When the pressing block 34 contacts the battery cell, cover glass and back plate, the central part of the pressing block 34 will first contact the battery cell, cover glass and back plate, thereby laminating the central part of the battery cell, cover glass and back plate. As the pressing block 34 is pressed downward, the battery cell, cover glass and back plate will be laminated from the inside to the outside, squeezing out the air between the battery cell, cover glass and back plate to ensure that the battery cell, cover glass and back plate are completely adhered to prevent hollowing between the battery cell, cover glass and back plate.

[0057] When the present invention is used:

[0058] First, the battery cell, cover glass and back plate are placed on the floating plate 8 by an external existing conveying device. During the placement process, the battery cell, cover glass and back plate are first adjusted by the slope 71 of the limit frame 7 so that the battery cell, cover glass and back plate are aligned and fall on the floating plate 8. After completion, the hydraulic rod 11 extends to move the pressing plate 3 downward;

[0059] Then, after the pressing plate 3 moves down, the upper pressure strip 31 is inserted into the lower sealing groove 24, and the lower pressure strip 23 is inserted into the upper sealing groove 32, completing the sealing between the sealing frame 2 and the pressing plate 3. The pump in the constant temperature device 13 pumps the heat source into the gap between the floating plate 8 and the lower sealing plate 82. At the same time, the floating plate 8 will rise against the battery sheet, the cover glass and the back plate. After completion, the vacuum device 12 will work to evacuate the inside of the sealing frame 2, and the lower air pipe 122 will make the inside of the sealing frame 2 present a vacuum. Due to the negative pressure inside the sealing frame 2, the active The plug rod 51 and the guide rod 61 move toward the inner side of the sealing frame 2, thereby driving the extrusion bar 4 to move, so that the extrusion bar 4 clamps and fixes the battery cell, the cover glass and the back plate, and then the pressing block 34 prevents the battery cell, the cover glass and the back plate from relative displacement when laminating the battery cell, the cover glass and the back plate, and at the same time, the through hole 42 and the gap between the battery cell, the cover glass and the back plate are correspondingly vacuumed to prevent air from appearing between the battery cell, the cover glass and the back plate to affect the lamination effect;

[0060] Next, negative pressure is created in the air chamber 83 through the upper air pipe 121, so that the floating column 9 moves downward. After the floating column 9 moves downward, the first spring 94 is compressed, and at the same time, the floating column 9 continues to move downward, and the top column 95 moves upward against the plug 914, and then communicates with the air chamber 83 and the adsorption hole 911, so as to adsorb and fix the battery cell, cover glass and back plate placed on the floating column 9. After completion, the hydraulic rod 11 continues to extend to make the pressing block 34 press the battery cell, cover glass and back plate to complete the lamination;

[0061] Finally, after completion, the pressure inside the sealing frame 2 is slowly released through the pressure relief valve 21, and at the same time, the pump in the constant temperature device 13 draws the liquid in the gap between the floating plate 8 and the lower sealing plate 82 into the constant temperature device 13. At this time, the floating plate 8 drives the laminated battery cells, cover glass and back plate to move downward, so that the glue in the through hole 42 is separated from the battery cells, cover glass and back plate. At the same time, due to the external air entering the interior of the sealing frame 2, the air will impact the glue points in the through hole 42, causing the glue points to fall to the lower part of the sealing frame 2. At this time, the hydraulic rod 11 is retracted to drive the pressing plate 3 to rise, so that a gap is generated between the laminated battery cells, cover glass and back plate of the pressing block 34. At the same time, the pressing plate 3 and the upper air pipe 121 release the pressure on the air chamber 83. When the air chamber 83 is depressurized, the first spring 94 recovers and presses against the floating column 9 rises, pushing the battery cells, cover glass and back plate away from the floating plate 8 to prevent the battery cells, cover glass and back plate from adhering to the floating plate 8, so as to facilitate the removal of the laminated battery cells, cover glass and back plate. When the floating column 9 rises to a certain height, the second spring 913 moves against the plug 914, and the plug 914 blocks the hole on the fixed plate 93. After the internal and external air pressures of the sealing frame 2 are consistent, the hydraulic rod 11 drives the pressure plate 3 to rise completely to the top. When a certain amount of glue dots are stored at the lower end of the sealing frame 2, the balance of the sealing plate 25 is broken and rotated to discharge the glue dots. After the glue dots are discharged, the sealing plate 25 is restored by the cooperation of the counterweight nut 27, and the sealing frame 2 continues to be sealed. The laminated battery cells, cover glass and back plate can be removed through the existing external device.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laminating device, comprising a frame (1), a vacuum device (12) and a constant temperature device (13), characterized in that: A sealing frame (2) is fixed on the frame (1), a pressure plate (3) is arranged at the upper end of the sealing frame (2), a hydraulic rod (11) is fixed at the upper end of the pressure plate (3), the upper end of the hydraulic rod (11) is fixedly connected to the frame (1), a limiting frame (7) is fixed inside the sealing frame (2), a floating component is slidably connected inside the limiting frame (7), an extrusion component and a guide component are arranged on the inner wall of the sealing frame (2), and a debonding component is connected to one end of the extrusion component located inside the sealing frame (2); The floating assembly comprises a floating plate (8), the upper end of the floating plate (8) is slidably connected to a plurality of adsorption fixing assemblies, the floating plate (8) is slidably connected to a limit frame (7), a current balancing grid (81) is fixed to the lower end of the floating plate (8), the lower end of the current balancing grid (81) is provided with a lower sealing plate (82) fixedly connected to the limit frame (7), an air chamber (83) is provided inside the floating plate (8), the adsorption fixing assembly is in communication with the air chamber (83), the lower end of the floating plate (8) is in communication with two symmetrically arranged bellows (84), the bellows (84) penetrate the lower sealing plate (82) and are in communication with the vacuum device (12); The extrusion assembly comprises a piston cylinder (5), the interior of the piston cylinder (5) is slidably connected to a piston rod (51), an air passage (52) is provided inside the piston rod (51), a sealing ring (53) is fixed to the piston rod (51), a compression spring (54) is provided between the sealing ring (53) and the piston cylinder (5), and the air passage (52) is in communication with a vacuum device (12); The adsorption fixing assembly comprises a floating column (9), a sealing head (91) is fixed to the upper end of the floating column (9), a slidably connected plug (914) is provided inside the sealing head (91), a plurality of upright columns (92) are fixed to the lower end of the sealing head (91), a fixing plate (93) is fixed to the lower end of the upright columns (92), the fixing plate (93) is fixedly connected to the floating column (9), a first spring (94) and a top column (95) are provided at the lower end of the fixing plate (93), the first spring (94) and the top column (95) are located in the air chamber (83), and the first spring (94) and the top column (95) are both fixedly connected to the floating plate (8); The degumming member comprises an extrusion strip (4), the extrusion strip (4) being fixedly connected to the piston rod (51), a U-shaped steel strip (41) being fixedly connected to the piston rod (51), a gap formed by the steel strip (41) and the extrusion strip (4) being connected to the air passage (52), a plurality of through holes (42) being formed on a side of the extrusion strip (4) away from the piston cylinder (5), the through holes (42) being truncated cone-shaped, a side of the through holes (42) having a larger diameter facing the steel strip (41), and the floating plate (8) being tangent to the lower end of the extrusion strip (4) when raised to the highest point.

2. A laminating device according to claim 1, characterized in that: The vacuum device (12) is connected to an upper air pipe (121), and the upper air pipe (121) is connected to a lower air pipe (122) via a pipe. A valve is provided on the pipe connecting the upper air pipe (121) and the lower air pipe (122), and the valve is used to control the ventilation of the lower air pipe (122). The upper air pipe (121) is connected to a bellows (84), and the lower air pipe (122) is connected to an air channel (52) for extracting gas from inside the sealing frame (2).

3. A laminating device according to claim 1, characterized in that: A gap is provided between the floating plate (8) and the lower sealing plate (82); the thermostatic device (13) is connected to the gap between the floating plate (8) and the lower sealing plate (82) through a pipeline; a valve is provided on the pipeline connecting the thermostatic device (13) and the gap; and a small hole is provided on the flow equalizing grid (81).

4. A laminating device according to claim 1, characterized in that: The upper end of the limit frame (7) is provided with a folded edge, and the upper end of the folded edge is provided with a slope (71). The lower end of the limit frame (7) is fixed with a base frame (22), and the base frame (22) is fixedly connected to the sealing frame (2). The limit frame (7) is fixedly connected to the sealing frame (2) through the base frame (22). The lower end of the base frame (22) is provided with a sealing plate (25) rotatably connected to the sealing frame (2), and the upper end of the sealing plate (25) is provided with a sealing strip. The outer side of the sealing plate (25) is fixed with a threaded rod (26), and the threaded rod (26) is threadedly connected with a counterweight nut (27).

5. A laminating device according to claim 1, characterized in that: The guide assembly comprises a guide cylinder (6), a guide rod (61) is slidably connected inside the guide cylinder (6), a compression spring (62) is sleeved on the guide rod (61), one end of the compression spring (62) is fixedly connected to the sealing frame (2), the other end of the compression spring (62) is fixedly connected to the guide rod (61), and one end of the guide rod (61) is fixedly connected to the extrusion strip (4) and the steel strip (41) of the debonding member.

6. A laminating device according to claim 1, characterized in that: The lower end of the floating column (9) is provided with a folded edge, the sealing head (91) is provided with a plurality of adsorption holes (911) along its circumference, the interior of the sealing head (91) is provided with a cavity (912), a second spring (913) is placed in the cavity (912), the plug (914) is slidably connected in the cavity (912), the second spring (913) and the plug (914) are against each other, the fixed plate (93) is provided with a hole, the plug (914) is truncated cone-shaped, and the plug (914) corresponds to the hole on the fixed plate (93).

7. A laminating device according to claim 1, characterized in that: A heating plate (33) is fixed at the lower end of the pressing plate (3), and a pressing block (34) is fixed at the lower end of the heating plate (33). The thickness of the lower end of the pressing block (34) decreases from the inside to the outside. An upper sealing groove (32) is provided at the lower end of the pressing plate (3), and upper pressing strips (31) fixedly connected to the pressing plate (3) are provided on both the inner and outer sides of the upper sealing groove (32).

8. A laminating device according to claim 7, characterized in that: A lower pressure strip (23) corresponding to the upper sealing groove (32) is fixed to the upper end of the sealing frame (2); lower sealing grooves (24) are provided on the inner and outer sides of the lower pressure strip (23); the lower sealing groove (24) corresponds to the upper pressure strip (31); the lower pressure strip (23) and the upper pressure strip (31) are made of rubber; and a pressure relief valve (21) is connected to one side of the sealing frame (2).

9. Application of a laminating device in the production of solar photovoltaic modules, characterized in that: Use a laminating device as claimed in claim 8.

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