Gluing and framing method and gluing and framing system for photovoltaic module

Abstract

The invention discloses a gluing and framing method and a gluing and framing system for a photovoltaic module, the gluing and framing method comprises the following steps: gluing near the edge of a back plate of the photovoltaic module to form a glue line, and a distance exists between the glue line and the edge of the back plate; the inner side of the mounting groove of the frame is coated with flowing colloid, and the volume of the colloid is smaller than half of the volume of the mounting groove; assembling the edge of the backboard coated with the glue line in the mounting groove, enabling the glue line to be in contact sealing with the frame, completing the framing of the photovoltaic module, carrying out the glue coating near the edge of the backboard of the photovoltaic module through a glue head to form the glue line, and enabling the glue line to be in contact sealing with the frame. Or a plurality of glue heads are used for gluing near the edge of the back plate of the photovoltaic module to form a plurality of glue line branches, and the adjacent glue line branches are connected end to end to form the glue line. The problems of front glue overflow and back glue shortage after the photovoltaic module is framed can be avoided, the yield of the photovoltaic module is improved, the labor and silica gel cost is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic modules, and in particular to a method and system for gluing and framing photovoltaic modules. Background Art

[0002] The solar photovoltaic industry usually uses aluminum frames as the frames of photovoltaic modules to protect the laminates in the photovoltaic modules. In the process of assembling the crystalline silicon photovoltaic modules, in order to ensure the sealing performance of the crystalline silicon photovoltaic modules, it is necessary to inject sealant into the mounting groove of the aluminum frame, and then fit the mounting groove of the aluminum frame on the edge of the laminate, so as to bond and seal the aluminum frame and the laminate.

[0003] In the current production process of photovoltaic modules, the method of gluing the photovoltaic modules before framing is to directly fill the silicone into the glue groove and then frame them. During framing, the silicone is squeezed and overflowed on the photovoltaic modules to form a sealing glue line. However, this method of gluing and framing may cause glue overflow on the front of the photovoltaic modules or glue shortage on the back. At this time, personnel are required to clean the overflow glue or fill the missing glue, which consumes manpower and reduces the efficiency of the production line. At the same time, the glue line formation on the photovoltaic modules of this method of gluing and framing is unstable, and the silicone loss is large. After the framing is cured, the photovoltaic modules are reworked due to the glue line and glue overflow problems, resulting in labor and material losses, affecting the production cost and product quality of the photovoltaic modules. Summary of the invention

[0004] In order to solve at least one of the problems mentioned in the above background technology, the present invention provides a glue coating and framing method and a glue coating and framing system for photovoltaic modules, which can avoid the problems of glue overflow on the front and glue shortage on the back of photovoltaic modules after framing, improve the yield of photovoltaic modules, save manpower and silicone costs, and improve production efficiency.

[0005] The specific technical solutions provided by the present invention are as follows:

[0006] In a first aspect, a method for gluing and framing a photovoltaic module is provided, comprising the following steps:

[0007] Applying glue near the edge of the back sheet of the photovoltaic module to form a glue line, wherein there is a distance between the glue line and the edge of the back sheet;

[0008] Apply flowing colloid on the inner side of the mounting groove of the frame, wherein the volume of the colloid is less than half of the volume of the mounting groove;

[0009] The edge of the back plate coated with the glue line is assembled in the installation groove, and the glue line is in contact and sealed with the frame to complete the framing of the photovoltaic component.

[0010] As a preferred embodiment of the above solution, the step of applying glue near the edge of the back sheet of the photovoltaic module to form a glue line includes:

[0011] The glue line is formed by applying glue near the edge of the backboard of the photovoltaic module using one glue head, or by applying glue near the edge of the backboard of the photovoltaic module using multiple glue heads to form multiple glue line branches, and adjacent glue line branches are connected end to end to form the glue line.

[0012] As a preferred embodiment of the above scheme, when multiple glue heads are used to apply glue near the edge of the back panel of the photovoltaic module to form multiple glue line branches, the lengths of the glue line branches are equal, and the multiple glue heads start applying glue at the same time and complete the application at the same time.

[0013] As a preferred embodiment of the above scheme, the method of using a plurality of glue heads to apply glue near the edge of the back sheet of the photovoltaic module to form a plurality of glue line branches, and connecting the adjacent glue line branches end to end to form the glue line comprises:

[0014] A first glue head and a second glue head are used to apply glue near the edge of the back panel of the photovoltaic module respectively to form a first glue line branch and a second glue line branch. The first glue line branch and the second glue line branch are connected end to end to form the glue line. The first glue line branch and the second glue line branch are equal in length. The first glue head and the second glue head start applying glue at the same time and complete applying glue at the same time.

[0015] As a preferred embodiment of the above scheme, the starting point of the first glue line branch is located on the first short side near the edge of the photovoltaic module back panel, and the end point of the first glue line branch is located on the second short side near the edge of the photovoltaic module back panel; the starting point of the second glue line branch is located on the second short side near the edge of the photovoltaic module back panel, and the end point of the second glue line branch is located on the first short side near the edge of the photovoltaic module back panel.

[0016] Alternatively, the starting point of the first glue line branch is located on the first long side near the edge of the photovoltaic module back panel, the end point of the first glue line branch is located on the second long side near the edge of the photovoltaic module back panel, the starting point of the second glue line branch is located on the second long side near the edge of the photovoltaic module back panel, and the end point of the second glue line branch is located on the first long side near the edge of the photovoltaic module back panel; the starting point of the first glue line branch coincides with the end point of the second glue line branch, and the end point of the first glue line branch coincides with the starting point of the second glue line branch.

[0017] As a preferred embodiment of the above solution, the distance between the glue line and the edge of the back panel is 6-8 mm.

[0018] As a preferred embodiment of the above solution, the step of applying glue near the edge of the back sheet of the photovoltaic module to form a glue line includes:

[0019] By means of image detection and positioning, glue is applied in real time near the edge of the back panel of the photovoltaic module to form a glue line.

[0020] As a preferred embodiment of the above solution, the colloid is parallel to the edge end surface of the back plate of the photovoltaic module.

[0021] By means of the above technical scheme, the method for gluing and framing of the present invention first applies glue near the edge of the back plate of the photovoltaic module to form a glue line, then applies a small amount of flowing colloid on the inner side of the mounting groove of the frame, and finally assembles the edge of the back plate coated with the glue line in the mounting groove, and makes the glue line contact and seal with the frame, so that the back plate gluing and the frame gluing are combined, and the back plate of the photovoltaic module can stably form a circle of sealing glue line during framing, thereby improving the sealing of the back plate frame; at the same time, when applying glue to the frame, since glue has been applied near the edge of the back plate of the photovoltaic module, A small amount of glue can be applied to the mounting groove of the frame, and the volume of the glue is less than half of the volume of the mounting groove. This reduces the amount of glue inside the mounting groove of the frame, and the glue can normally overflow into the glue overflow groove on the front side of the photovoltaic module of the frame during framing, and will not overflow onto the front glass of the photovoltaic module. In addition, after applying glue near the edge of the back panel, glue already exists at the four corners of the photovoltaic module before framing. In this way, when applying glue to the frame, there is a larger reserved space at the corners and no glue is required. Glue overflow is not likely to occur at the corners during framing, which can reduce the cleaning work of personnel, reduce the cost of silicone, and improve production efficiency.

[0022] In a second aspect, a glue coating and framing system for realizing the glue coating and framing method of the photovoltaic module as described above is provided, comprising a conveyor line and a framing machine, the framing machine comprising a back panel glue coating machine, a frame glue coating machine and a framing assembly, the conveyor line conveys the photovoltaic module and connects the back panel glue coating machine and the frame glue coating machine, the back panel glue coating machine is used to apply glue near the edge of the back panel of the photovoltaic module to form a glue line, the frame glue coating machine is used to apply flowing colloid on the inner side of the mounting groove of the frame, and the framing assembly is used to assemble the back panel edge coated with the glue line in the mounting groove, and make the glue line contact and seal with the frame.

[0023] As a preferred embodiment of the above scheme, the backplane gluing machine includes a gluing module and a controller, the gluing module includes a gluing track and a gluing mechanism, the gluing track corresponds to the vicinity of the backplane edge of the photovoltaic module, the gluing mechanism is arranged on the gluing track and can move on the gluing track, the gluing mechanism is connected to the controller, the gluing mechanism includes a gluing head and an image detection component, and the controller detects the image of the backplane edge of the photovoltaic module through the image detection component to control the real-time positioning movement of the gluing mechanism and the gluing of the gluing head.

[0024] As a preferred embodiment of the above scheme, the gluing track includes a long side track and a short side track, the long side track corresponds to the long side of the back panel edge of the photovoltaic module, and the short side track corresponds to the short side of the back panel edge of the photovoltaic module, one of the long side track and the short side track is a fixed part and the other is a movable part, the movable part can move on the fixed part, the gluing mechanism is arranged on the movable part and can move on the movable part, and the controller controls the movement of the movable part on the fixed part and the movement of the gluing mechanism on the movable part by detecting the image of the back panel edge of the photovoltaic module through the image detection part.

[0025] As a preferred embodiment of the above scheme, the gluing mechanism also includes a gluing valve, a lifting seat and a moving seat, the gluing head is connected to the gluing valve, the gluing head, the gluing valve and the image detection component are arranged on the lifting seat, the lifting seat is arranged on the moving seat, the moving seat is arranged on the moving part and can move on the moving part, the gluing valve is connected to the controller, and the lifting and lowering of the lifting seat is controlled by the controller to realize gluing of the gluing head.

[0026] As a preferred embodiment of the above scheme, the frame glue applying machine includes a flat glue head, and the glue is applied to the inner side of the installation groove of the frame through the flat glue head.

[0027] As a preferred embodiment of the above solution, the glue applying head includes a round-nosed glue head, and the glue is applied near the edge of the back panel of the photovoltaic module through the round-nosed glue head.

[0028] By means of the above technical scheme, the gluing and framing system of the present invention is provided with a conveyor line, a back panel gluing machine, a frame gluing machine and a framing assembly. The photovoltaic module to be glued and framed is first conveyed to the back panel gluing machine through the conveyor line for positioning and correction, so that the photovoltaic module is within the gluing range of the back panel gluing machine. Then the back panel gluing machine forms a glue line near the edge of the back panel of the photovoltaic module. After the gluing near the edge of the back panel is completed, the conveyor line conveys the photovoltaic module to the framing area of ​​the framing machine. When framing, a small amount of glue is first applied to the inner side of the mounting groove of the frame by the frame gluing machine. After the gluing of the mounting groove frame is completed, the framing assembly moves the frame to the framing position of the photovoltaic module through a mechanical arm to realize the framing combination of the photovoltaic module and the frame, and completes the framing of the photovoltaic module. The above-mentioned gluing and framing system glues the back panel and the frame Combined with gluing, a circle of sealing glue line can be stably formed on the back panel of the photovoltaic module during framing, thereby improving the sealing of the back panel frame; at the same time, when gluing the frame, since glue has been applied near the edge of the back panel of the photovoltaic module, a small amount of glue can be applied to the mounting groove of the frame, and the volume of the glue is less than half of the volume of the mounting groove, thereby reducing the amount of glue inside the mounting groove of the frame, and the glue can normally overflow into the overflow glue groove on the front side of the photovoltaic module of the frame during framing, and will not overflow onto the front glass of the photovoltaic module; in addition, after gluing near the edge of the back panel, glue already exists at the four corners of the photovoltaic module before framing, thereby having a larger reserved space at the corners when gluing the frame, and no glue is required, and corner glue overflow is less likely to occur during framing, thereby reducing the cleaning work of personnel, reducing the cost of silicone, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a schematic diagram of gluing and framing in the prior art;

[0031] Figure 2 This is a schematic diagram of the gluing and framing of the present invention;

[0032] Figure 3 It is a flow chart of the method for gluing and framing a photovoltaic module of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the back panel glue coating machine of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the gluing mechanism of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the round-mouth rubber head of the present invention;

[0036] Figure 7 A schematic diagram of gluing in one embodiment of gluing near the edge of the back sheet of a photovoltaic module of the present invention;

[0037] Figure 8 This is a schematic diagram of the flat-edge glue head of the present invention when applying glue to the frame;

[0038] Fig. 9 for Figure 8 Schematic diagram of the frame after gluing. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] like Figure 1 As shown, currently, the glue application before framing of photovoltaic modules is performed by directly filling the silica gel 30 into the mounting groove 71 of the frame 7 through the frame glue application machine of the frame framing machine, and then framing is performed. This glue application method is prone to the problem of glue overflow 40 on the front side of the photovoltaic module after framing or glue shortage on the back side, and personnel are required to clean the overflow glue or fill the glue shortage, which consumes manpower and glue, reduces the efficiency of the production line, and affects the production cost and product quality of photovoltaic modules. Figure 2 As shown, the method and system for gluing and framing photovoltaic modules of the present invention can avoid the problem of glue overflow on the front and glue shortage on the back of photovoltaic modules after framing, improve the yield of photovoltaic modules, save manpower and silica gel costs, and improve production efficiency. Compared with the prior art, the loss of glue in gluing and framing each photovoltaic module of the present invention is reduced by 40-50g. The embodiments of the present invention are explained in detail below.

[0041] Embodiment 1

[0042] like Figure 3 As shown, the present invention provides a method for gluing and framing a photovoltaic module, comprising the following steps:

[0043] S1: Glue is applied near the edge of the back sheet of the photovoltaic module to form a glue line, and there is a distance between the glue line and the edge of the back sheet.

[0044] Specifically, S1 includes:

[0045] A glue head is used to apply glue near the edge of the backboard of the photovoltaic module to form a glue line, or multiple glue heads are used to apply glue near the edge of the backboard of the photovoltaic module to form multiple glue line branches, and adjacent glue line branches are connected end to end to form a glue line.

[0046] Specifically, one glue head can be used to apply glue near the edge of the back panel of the photovoltaic module to form a glue line, or multiple glue heads can be used to apply glue near the edge of the back panel of the photovoltaic module to form multiple glue line branches. Adjacent glue line branches are connected end to end to form a glue line. In this embodiment, multiple glue heads are used for glue application, and the lengths of the glue line branches are equal. Multiple glue heads start applying glue at the same time and complete the gluing at the same time. In other embodiments, the lengths of the glue line branches corresponding to the multiple glue heads may be different, and there may also be a time difference between the start time and the completion time of the glue application of the multiple glue heads, which is determined according to the actual operation scene and conditions. Photovoltaic modules are generally rectangular, and the glue line is also correspondingly rectangular.

[0047] Specifically, using multiple glue heads to apply glue near the edge of the back sheet of the photovoltaic module to form multiple glue line branches, and connecting adjacent glue line branches end to end to form a glue line includes:

[0048] The first glue head and the second glue head are used to apply glue near the edge of the back panel of the photovoltaic module respectively to form a first glue line branch and a second glue line branch. The first glue line branch and the second glue line branch are connected end to end to form a glue line. The lengths of the first glue line branch and the second glue line branch are equal. The first glue head and the second glue head start applying glue at the same time and complete the applying glue at the same time.

[0049] In this embodiment, a first glue head and a second glue head are used to cooperate in applying glue near the edge of the back panel of the photovoltaic module. In other embodiments, three, four or more glue heads can also be used to cooperate in applying glue near the edge of the back panel of the photovoltaic module. Multiple glue heads evenly distribute the lengths of the glue line branches that need to be glued, and multiple glue heads start applying glue at the same time and complete the gluing at the same time, which can effectively speed up the gluing speed near the edge of the back panel of the photovoltaic module and quickly complete the gluing.

[0050] Specifically, the starting point of the first glue line branch is located on the first short side near the edge of the back panel of the photovoltaic module, and the end point of the first glue line branch is located on the second short side near the edge of the back panel of the photovoltaic module; the starting point of the second glue line branch is located on the second short side near the edge of the back panel of the photovoltaic module, and the end point of the second glue line branch is located on the first short side near the edge of the back panel of the photovoltaic module, or, the starting point of the first glue line branch is located on the first long side near the edge of the back panel of the photovoltaic module, and the end point of the first glue line branch is located on the second long side near the edge of the back panel of the photovoltaic module, the starting point of the second glue line branch is located on the second long side near the edge of the back panel of the photovoltaic module, and the end point of the second glue line branch is located on the first long side near the edge of the back panel of the photovoltaic module; the starting point of the first glue line branch coincides with the end point of the second glue line branch, and the end point of the first glue line branch coincides with the starting point of the second glue line branch. The glue application starting point of the first glue line branch and the glue application end point of the second glue line branch can be located at any position of the first short side of the photovoltaic module, and the glue application end point of the first glue line branch and the glue application starting point of the second glue line branch can be located at any position of the second short side of the photovoltaic module. In this embodiment, the glue application starting point of the first glue line branch and the glue application end point of the second glue line branch are located at the midpoint of the first short side of the photovoltaic module, and the glue application end point of the first glue line branch and the glue application starting point of the second glue line branch are located at the midpoint of the second short side of the photovoltaic module. In other embodiments, the glue application starting point of the first glue line branch can also be located on the first long side of the photovoltaic module, and the glue application end point of the first glue line branch can be located on the second long side of the photovoltaic module; the glue application starting point of the second glue line branch can be located on the second long side of the photovoltaic module, and the glue application end point of the second glue line branch can be located on the first long side of the photovoltaic module. At the same time, the glue application starting point of the first glue line branch coincides with the glue application end point of the second glue line branch, and the glue application end point of the first glue line branch coincides with the glue application starting point of the second glue line branch.

[0051] In this embodiment, in S1: the distance between the glue line and the edge of the back panel is 6-8 mm. The distance between the glue line and the edge of the back panel is preferably 6-8 mm. If the glue line is too close to the edge of the back panel, the glue line may overflow and be uneven during framing. If the glue line is too far from the edge of the back panel, the glue line may be separated from the frame during framing, affecting the framing effect.

[0052] In this embodiment, S1 also includes:

[0053] By means of image detection and positioning, glue is applied in real time near the edge of the back panel of the photovoltaic module to form a glue line.

[0054] Specifically, the edge image of the back panel of the photovoltaic module is detected by an influencing detection component (such as a shooting component, including a camera, etc.), and the image is transmitted to the controller. The controller analyzes the image to locate and control the position of the glue head in real time to apply glue to form a glue line.

[0055] S2: Apply flowing colloid on the inner side of the mounting groove of the frame, and the volume of the colloid is less than half of the volume of the mounting groove.

[0056] Specifically, a small amount of flowing colloid is applied to the inner side of the mounting groove of the frame, and the colloid is parallel to the edge end face of the back panel of the photovoltaic module, and the edge end face of the back panel refers to the side end face of the edge of the back panel. In this way, only a small amount of glue is applied to the inner side of the mounting groove, and the volume of the colloid is less than half of the volume of the mounting groove. In this embodiment, the volume of the colloid is 1 / 3 of the volume of the mounting groove. Compared with the prior art, the colloid applied in the mounting groove accounts for more than half of the volume of the mounting groove. The amount of glue inside the mounting groove of the frame can be reduced. When framing, the colloid can normally overflow into the overflow glue groove on the front side of the photovoltaic module of the frame, and will not overflow onto the front glass of the photovoltaic module, thereby reducing the loss of silicone and improving the quality of the photovoltaic module. Photovoltaic modules generally need to be installed with four frames, and the inner sides of the mounting grooves of the four frames need to be coated with glue separately.

[0057] S3: Assemble the edge of the back panel coated with glue line into the installation groove, and make the glue line contact and seal with the frame to complete the framing of the photovoltaic module.

[0058] Specifically, the existing framing machine is used to frame and assemble the four frames with the four sides (long sides and short sides) of the photovoltaic module to complete the framing and sealing of the photovoltaic module.

[0059] The glue coating and framing method of the present invention first coats glue near the edge of the back plate of the photovoltaic module to form a glue line, then coats a small amount of flowing colloid on the inner side of the mounting groove of the frame, and finally frames the glue-coated photovoltaic module and the frame, so that the back plate coating and the frame coating are combined, and the back plate of the photovoltaic module can stably form a circle of sealing glue line during framing, thereby improving the sealing of the back plate frame; at the same time, when coating the frame with glue, since the glue has been coated near the edge of the back plate of the photovoltaic module, a small amount of glue can be coated on the mounting groove of the frame, and the volume of the colloid is less than half of the volume of the mounting groove, thereby reducing the amount of glue inside the mounting groove of the frame, and the colloid can normally overflow into the front glue overflow groove of the photovoltaic module of the frame during framing, and will not overflow onto the front glass of the photovoltaic module; in addition, after coating the glue near the edge of the back plate, glue already exists at the four corners of the photovoltaic module before framing, so that when coating the frame with glue, there is a larger reserved space at the corner position without the need for glue coating, and corner glue overflow is not likely to occur during framing, which can reduce the cleaning work of personnel, reduce the cost of silicone, and improve production efficiency.

[0060] Embodiment 2

[0061] The present invention provides a glue coating and framing system for realizing the glue coating and framing method of photovoltaic modules as in Example 1, comprising a conveyor line 1 and a framing machine (not shown in the figure), the framing machine comprising a back panel glue coating machine 2, a frame glue coating machine (not shown in the figure) and a framing assembly (not shown in the figure), the conveyor line 1 conveys photovoltaic modules 100 and connects the back panel glue coating machine 2 and the frame glue coating machine, the back panel glue coating machine 2 is used for coating glue near the edge of the back panel of the photovoltaic module to form a glue line 50, the frame glue coating machine is used for coating flowing glue 60 on the inner side of the mounting groove 71 of the frame 7, and the framing assembly is used for assembling the back panel edge coated with the glue line 50 in the mounting groove 71, and making the glue line 50 contact and seal with the frame 7.

[0062] The backplane gluing machine 2 includes a gluing module 3 and a controller (not shown). The gluing module 3 includes a gluing track 4 and a gluing mechanism 5. The gluing track 4 corresponds to the vicinity of the backplane edge of the photovoltaic module. The gluing mechanism 5 is arranged on the gluing track 4 and can move on the gluing track 4. The gluing mechanism 5 is connected to the controller. The gluing mechanism 5 includes a gluing head 51 and an image detection component 52. The controller detects the image of the backplane edge of the photovoltaic module through the image detection component 52 to control the real-time positioning movement of the gluing mechanism 5 and the gluing of the gluing head 51.

[0063] The gluing track 4 includes a long side track 41 and a short side track 42. The long side track 41 corresponds to the long side of the back panel edge of the photovoltaic module, and the short side track 42 corresponds to the short side of the back panel edge of the photovoltaic module. One of the long side track 41 and the short side track 42 is a fixed part and the other is a movable part. The movable part can move on the fixed part, and the fixed part is fixed on the protective cover outside the photovoltaic module conveyor line. The gluing mechanism 5 is arranged on the movable part and can move on the movable part. The controller detects the image of the back panel edge of the photovoltaic module through the image detection part 52 to control the movement of the movable part on the fixed part and the movement of the gluing mechanism 5 on the movable part.

[0064] The glue coating mechanism 5 also includes a glue coating valve 53, a lifting seat 54 and a moving seat 55. The glue coating head 51 is connected to the glue coating valve 53. The glue coating head 51, the glue coating valve 53 and the image detection component 52 are arranged on the lifting seat 54. The lifting seat 54 is arranged on the moving seat 55. The moving seat 55 is arranged on the moving part and can move on the moving part. The glue coating valve 53 is connected to the controller, and the lifting and lowering of the lifting seat 54 is controlled by the controller to realize the glue coating of the glue coating head 51. The controller controls the glue output of the glue coating head 51 through the glue coating valve 53 to ensure the stability of the glue coating amount of each photovoltaic module, facilitate the control of the amount of silica gel used, and also facilitate the debugging of the glue coating effect in the later stage.

[0065] like Figure 4 and Figure 5As shown, in this embodiment, the gluing mechanism 5 also includes a light source 56 and a Z-axis screw module 57. The light source 56 provides lighting for the image detection component 52 to improve the detection effect. The light source 56 is arranged on the lifting seat 54, the lifting seat 54 is arranged on the Z-axis screw module 57, and the Z-axis screw module 57 is arranged on the moving seat. The controller is connected to the Z-axis screw module and controls the lifting seat to rise and fall along the Z axis, so as to facilitate the gluing head 51 to apply glue. The gluing track 4 includes two long side tracks (Y axis) and two short side tracks (X axis). The two short side tracks are movable parts, and the two long side tracks are fixed parts. Each short side track is provided with a gluing mechanism 5. The movable seat 55 of the gluing mechanism 5 is arranged on the X-axis screw module (not shown), and the short side tracks are arranged on the Y-axis screw module (not shown). Both the X-axis screw module and the Y-axis screw module are connected to the controller. The controller controls the gluing mechanism to move on the short side tracks through the X-axis screw module, thereby realizing the gluing of the short side of the back panel edge of the photovoltaic module. The controller controls the two ends of the two short side tracks to move on the two long side tracks through the Y-axis screw module, thereby realizing the gluing of the long side of the back panel edge of the photovoltaic module. Figure 7 As shown, in this embodiment, when applying glue near the edge of the back plate of the photovoltaic module, the two short side tracks are respectively located on both sides of the long side track, and the gluing starting points of the gluing heads of the two gluing mechanisms are respectively located at the midpoints of the two short sides of the edge of the back plate of the photovoltaic module. After the gluing starts, the controller controls the gluing mechanism to move clockwise or counterclockwise on the short side track to achieve gluing of half of the short side. After reaching the end point of the short side, the controller controls the short side track to start moving along the long side track to complete the gluing of the entire long side. Finally, the controller controls the short side track to stop and moves the gluing mechanism again to achieve gluing of half of the other short side. The two gluing mechanisms complete the gluing of two half short sides and one long side respectively. Figure 7 In the embodiment, A is the glue application starting point of the first glue application mechanism and the glue application end point of the second glue application mechanism, and B is the glue application starting point of the second glue application mechanism and the glue application end point of the first glue application mechanism. The glue application tracks of the two glue application mechanisms are connected end to end to form a complete glue line around the edge of the back panel of the photovoltaic module, and the two glue application mechanisms start to apply glue at the same time and complete the application at the same time, so the glue application speed is fast and the efficiency is high. In this embodiment, the controller is a PLC controller, and the PLC controller pre-stores the glue application position information near the back panel edge of photovoltaic modules of different sizes. In the actual glue application process, the image of the back panel edge is detected by the image detection component and transmitted to the PLC controller. The PLC controller calculates the position information and corrects the position of the glue application mechanism in real time to achieve accurate glue application.

[0066] In other embodiments, multiple gluing mechanisms 5 can be set on each short side track, and two long side tracks can be used as movable parts, and two short side tracks can be used as fixed parts. One or more gluing mechanisms 5 are set on the long side tracks, and the gluing mechanisms 5 move on the long side tracks to achieve gluing on the long sides of the back panel edge of the photovoltaic module, and the long side tracks move on the short side tracks to achieve gluing on the short sides of the back panel edge of the photovoltaic module. In addition, in other embodiments, four long side tracks can be set in groups of two, and a short side track can be movably set on each group of long side tracks. The gluing mechanisms 5 are set on the short side tracks, and the gluing mechanisms on each short side track are responsible for gluing a long side and a short side of the edge of the back panel of the photovoltaic module. The two long side tracks in each group of long side tracks are set up and down, and one long side track is used as a direct support for the short side track, and the other long side track is used as a hanging support for the short side track. In this way, the support and movement of the gluing mechanisms 5 are more stable, and the gluing efficiency is improved.

[0067] like Figure 8 and Fig. 9 As shown, the frame glue machine includes a flat glue head 6, through which glue is applied to the inner side of the mounting groove 71 of the frame 7. The mounting groove 71 includes an inner side 711, a first upper lip edge 712, a second upper lip edge 714 and a lower lip edge 713, wherein a front glue overflow groove 715 of the photovoltaic module of the frame is formed between the first upper lip edge 712 and the second upper lip edge 714. Compared with the beveled glue head used on the existing frame glue machine, the flat glue head 6 used in this embodiment has a smoother glue outlet and a relatively reduced glue output. The frame glue machine can adjust the height of the flat glue head 6 when applying glue, so that the flat glue head 6 is parallel to the inner side 711 of the mounting groove 71 of the frame 7, and then the flat glue head 6 is used to apply glue so that a small amount of silicone is applied to the inner side 711 of the mounting groove 71 to form a colloid. The volume of the colloid is less than half of the volume of the mounting groove. In this embodiment, the volume of the colloid is 1 / 3 of the volume of the mounting groove. Compared with the prior art, the colloid applied in the mounting groove accounts for more than half of the volume of the mounting groove. The layer of silicone in the mounting groove is approximately parallel to the end section of the back panel edge of the photovoltaic module 100. In this way, when framing, the layer of silicone can normally overflow into the front glue overflow groove 715 of the photovoltaic module of the frame instead of overflowing onto the front glass of the photovoltaic module. This can reduce the amount of glue inside the mounting groove of the frame, reduce the loss of silicone and improve the quality of the photovoltaic module. Figure 2 As shown, in this embodiment, the layer of silicone is located between the second upper lip 714 and the inner side 711 without exceeding the second upper lip 714 to the outside of the installation groove, and the thickness of the layer of silicone is about 2-3 mm.

[0068] like Figure 6As shown, the glue applying head 51 includes a round-mouth glue head 51, through which glue is applied near the edge of the backboard of the photovoltaic module. When the round-mouth glue head is applying glue, the cross section of the glue line at the edge of the backboard of the photovoltaic module is in an arc shape, and a circle of stable and beautiful sealing glue line can be formed on the backboard during subsequent framing, avoiding burrs, glue accumulation and glue shortage on the sealing glue line.

[0069] like Figure 2 and Figure 4 As shown, in this embodiment, the backplane glue coating machine 2 also includes a lifting mechanism 8, a negative pressure suction cup 9, a positioning and correction mechanism 10, a pressure plate pump mechanism 20 and an oil cup (not shown) arranged in the backplane glue coating area. The photovoltaic module 100 to be glued and framed is first transported to the backplane glue coating machine 2 through the conveyor line 1, and is positioned and corrected by the positioning and correction mechanism 10. Then, the lifting mechanism 8 drives the photovoltaic module to descend and be adsorbed and fixed by the negative pressure suction cup 9, so that the photovoltaic module is positioned within the glue coating range of the backplane glue coating machine 2, and then the controller detects the backplane of the photovoltaic module through the image detection component 52. The edge image is used to control the real-time positioning and movement of the glue coating mechanism 5 on the glue coating track 4, and at the same time, the glue coating head 51 is controlled to coat the glue near the edge of the back panel of the photovoltaic module to form a glue line near the edge of the back panel of the photovoltaic module. The pressure plate pump mechanism 20 delivers silica gel to the glue coating head 51 through the glue delivery pipeline. After the glue coating near the edge of the back panel is completed (when the glue coating head is not in use, the controller controls the glue head to be placed in the vegetable oil in the oil cup to prevent the glue head from solidifying), the distance between the glue line 50 and the side end face of the edge of the photovoltaic module is about 6-8mm, and the conveyor line conveys the photovoltaic module to the frame of the frame assembling machine. When framing, firstly, a small amount of flowing colloid 60 is applied to the inner side 711 of the mounting groove 71 of the frame 7 by the frame glue machine. After the mounting groove frame is glued, the frame assembling machine moves the frame to the framing position of the photovoltaic module through the mechanical arm to realize the framing combination of the photovoltaic module and the frame, and completes the framing of the photovoltaic module. The above-mentioned glue framing system combines the backboard glue coating and the frame glue coating. When framing, the backboard of the photovoltaic module can stably form a circle of sealing glue line 70, thereby improving the sealing of the backboard frame. At the same time, when gluing the frame, since the glue has been applied near the edge of the backboard of the photovoltaic module, A small amount of glue can be applied to the mounting groove of the frame, and the volume of the glue is less than half of the volume of the mounting groove. This reduces the amount of glue inside the mounting groove of the frame, and the glue can normally overflow into the glue overflow groove on the front side of the photovoltaic module of the frame during framing, and will not overflow onto the front glass of the photovoltaic module. In addition, after applying glue near the edge of the back panel, glue already exists at the four corners of the photovoltaic module before framing. In this way, when applying glue to the frame, there is a larger reserved space at the corners and no glue is required. Glue overflow is not likely to occur at the corners during framing, which can reduce the cleaning work of personnel, reduce the cost of silicone, and improve production efficiency.

[0070] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0071] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for gluing and framing a photovoltaic module, characterized in that: The following steps are involved: Applying glue near the edge of the back sheet of the photovoltaic module to form a glue line, wherein there is a distance between the glue line and the edge of the back sheet; Apply flowing colloid on the inner side of the mounting groove of the frame, wherein the volume of the colloid is less than half of the volume of the mounting groove; The edge of the back plate coated with the glue line is assembled in the installation groove, and the glue line is in contact and sealed with the frame to complete the framing of the photovoltaic component.

2. The method for gluing and framing a photovoltaic module according to claim 1, characterized in that: The step of applying glue near the edge of the back sheet of the photovoltaic module to form a glue line comprises: The glue line is formed by applying glue near the edge of the backboard of the photovoltaic module using one glue head, or by applying glue near the edge of the backboard of the photovoltaic module using multiple glue heads to form multiple glue line branches, and adjacent glue line branches are connected end to end to form the glue line.

3. The method for gluing and framing a photovoltaic module according to claim 2, characterized in that: When a plurality of glue heads are used to apply glue near the edge of the back plate of the photovoltaic module to form a plurality of glue line branches, the lengths of the glue line branches are equal, and the plurality of glue heads start applying glue at the same time and complete applying glue at the same time.

4. The method for gluing and framing a photovoltaic module according to claim 3, characterized in that: The method of using a plurality of glue heads to apply glue near the edge of the back sheet of the photovoltaic module to form a plurality of glue line branches, and connecting the adjacent glue line branches end to end to form the glue line comprises: A first glue head and a second glue head are used to apply glue near the edge of the back panel of the photovoltaic module respectively to form a first glue line branch and a second glue line branch. The first glue line branch and the second glue line branch are connected end to end to form the glue line. The first glue line branch and the second glue line branch are equal in length. The first glue head and the second glue head start applying glue at the same time and complete applying glue at the same time.

5. The method for gluing and framing a photovoltaic module according to claim 4, characterized in that: The glue application starting point of the first glue line branch is located on the first short side near the edge of the photovoltaic module back panel, the glue application end point of the first glue line branch is located on the second short side near the edge of the photovoltaic module back panel, the glue application starting point of the second glue line branch is located on the second short side near the edge of the photovoltaic module back panel, and the glue application end point of the second glue line branch is located on the first short side near the edge of the photovoltaic module back panel. Alternatively, the starting point of the first glue line branch is located on the first long side near the edge of the photovoltaic module back panel, the end point of the first glue line branch is located on the second long side near the edge of the photovoltaic module back panel, the starting point of the second glue line branch is located on the second long side near the edge of the photovoltaic module back panel, and the end point of the second glue line branch is located on the first long side near the edge of the photovoltaic module back panel; the starting point of the first glue line branch coincides with the end point of the second glue line branch, and the end point of the first glue line branch coincides with the starting point of the second glue line branch.

6. The method for gluing and framing a photovoltaic module according to claim 1, characterized in that: The step of applying glue near the edge of the back sheet of the photovoltaic module to form a glue line comprises: Through image detection and positioning, the glue is applied near the edge of the back sheet of the photovoltaic module in real time to form a glue line; And / or, the distance between the glue line and the edge of the back panel is 6-8 mm; And / or, the colloid is parallel to the edge end surface of the back plate of the photovoltaic module.

7. A glue coating and framing system for implementing the glue coating and framing method of a photovoltaic module as claimed in any one of claims 1 to 6, characterized in that: It includes a conveyor line and a framing machine, the framing machine includes a back panel glue coating machine, a frame glue coating machine and a framing assembly, the conveyor line conveys the photovoltaic module and connects the back panel glue coating machine and the frame glue coating machine, the back panel glue coating machine is used to apply glue near the edge of the back panel of the photovoltaic module to form a glue line, the frame glue coating machine is used to apply flowing colloid on the inner side of the mounting groove of the frame, and the framing assembly is used to assemble the back panel edge coated with the glue line in the mounting groove, and make the glue line contact and seal with the frame.

8. The glue-coating and framing system according to claim 7, characterized in that: The backplane glue coating machine comprises a glue coating module and a controller, the glue coating module comprises a glue coating track and a glue coating mechanism, the glue coating track corresponds to the vicinity of the backplane edge of the photovoltaic module, the glue coating mechanism is arranged on the glue coating track and can move on the glue coating track, the glue coating mechanism is connected to the controller, the glue coating mechanism comprises a glue coating head and an image detection component, the controller detects the backplane edge image of the photovoltaic module through the image detection component to control the real-time positioning movement of the glue coating mechanism and the glue coating of the glue coating head; Preferably, the glue applying head comprises a round-nosed glue head, through which glue is applied near the edge of the back plate of the photovoltaic module; Preferably, the frame glue applying machine comprises a flat glue head, through which glue is applied on the inner side of the mounting groove of the frame.

9. The glue-coating and framing system according to claim 8, characterized in that: The gluing track includes a long side track and a short side track, the long side track corresponds to the long side of the back panel edge of the photovoltaic module, and the short side track corresponds to the short side of the back panel edge of the photovoltaic module. One of the long side track and the short side track is a fixed part and the other is a movable part. The movable part can move on the fixed part. The gluing mechanism is arranged on the movable part and can move on the movable part. The controller controls the movement of the movable part on the fixed part and the movement of the gluing mechanism on the movable part by detecting the image of the back panel edge of the photovoltaic module through the image detection part.

10. The glue-coating and framing system according to claim 9, characterized in that: The gluing mechanism also includes a gluing valve, a lifting seat and a moving seat. The gluing head is connected to the gluing valve. The gluing head, the gluing valve and the image detection component are arranged on the lifting seat. The lifting seat is arranged on the moving seat. The moving seat is arranged on the moving part and can move on the moving part. The gluing valve is connected to the controller, and the lifting and lowering of the lifting seat is controlled by the controller.

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