Insulation sealing plug and photovoltaic module

Abstract

The utility model relates to the field of photovoltaic technology, and provides an insulation sealing plug and a photovoltaic module. And the insulating sealing plug is used for sealing the polar hole of the photovoltaic module at the photovoltaic module. The insulation sealing plug is provided with a leading-out hole which is used for leading out a bus bar of the photovoltaic module. When the plug body is matched with the polar hole, the first side is located outside the photovoltaic module, the second side is located inside the photovoltaic module, a sealing convex edge is formed on the first side, the sealing convex edge extends in the radial direction of the plug body, and the size of the sealing convex edge in the radial direction of the plug body is larger than that of the plug body. According to the insulating sealing plug provided by the invention, the sealing convex edge is formed on the side, located outside the photovoltaic module, of the plug body, and when the photovoltaic module is laminated, the sealing convex edge is heated and melted to be bonded with glass on the back surface of the photovoltaic module, so that external water vapor is effectively prevented from entering the photovoltaic module through a fit clearance between the plug body and a polar hole; and the sealing performance of the antipodal hole is ensured.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to an insulating sealing plug and a photovoltaic assembly. Background Art

[0002] With the development of the solar photovoltaic industry, the use of solar photovoltaic modules has become increasingly common. In practical use, photovoltaic modules require a photovoltaic junction box to extract the electricity generated by the module for connection to external loads. To facilitate the extraction of the electricity generated by the photovoltaic module, the module is generally equipped with busbars, and the glass on the backlight side of the module is provided with a pole hole. The busbar extends through the pole hole to connect to the junction box.

[0003] After the busbar is led out of the pole hole, the pole hole generally needs to be sealed. Regarding the sealing of the pole hole of the photovoltaic module, a barrier is generally installed at the pole hole to block the pole hole, but the barrier in the related art has poor sealing performance for the pole hole. Utility Model Content

[0004] The present application provides an insulating sealing plug and a photovoltaic module to solve the technical problem of poor sealing of the pole holes of the photovoltaic module in the related art.

[0005] To solve the above problems, the present application provides an insulating sealing plug for sealing a pole hole of a photovoltaic module in a photovoltaic module, the insulating sealing plug comprising:

[0006] The plug body has a first side and a second side relative to each other, and the plug body is also formed with a lead-out hole, which is arranged through the first side and the second side and is used to lead out the bus bar of the photovoltaic component; when the plug body is matched with the pole hole, the first side is located outside the photovoltaic component, and the second side is located inside the photovoltaic component, and the first side is formed with a sealing ridge, which extends in the radial direction of the plug body, and the size of the sealing ridge in the radial direction of the plug body is larger than the size of the plug body.

[0007] In some embodiments, the second side is also formed with the sealing ridge.

[0008] In some embodiments, the plug body includes a first connector and a second connector, the first side is formed on the first connector, and the second side is formed on the second connector.

[0009] In some embodiments, the first connector and the second connector are detachably connected.

[0010] In some embodiments, one of the first connecting body and the second connecting body has an internal connecting thread, and the other one of the first connecting body and the second connecting body has an external connecting thread that matches the internal connecting thread.

[0011] In some embodiments, the connecting internal thread is distributed on the inner circumference of the connecting cylinder, and the circumference of the connecting cylinder has at least one exhaust hole, and the exhaust hole is arranged to pass through the radial direction of the connecting cylinder. When the first connector and the second connector are connected and laminated, the plug body is heated and melted, and the exhaust hole is used to discharge the gas between the connecting internal thread and the connecting external thread.

[0012] In some embodiments, the plug is made of hot-melt material.

[0013] In some embodiments, the insulating sealing plug further comprises:

[0014] The insulating layer is detachably attached to one side of the plug body, and when the plug body is matched with the pole hole, the insulating layer is located outside the photovoltaic component.

[0015] In some embodiments, the surface of the insulating layer away from the plug body is a rough surface.

[0016] In some embodiments, the insulating sealing plug is used to seal the pole hole of a single-glass photovoltaic module or the pole hole of a double-glass photovoltaic module;

[0017] When the insulating sealing plug is used to seal the pole hole of a single-glass photovoltaic module, the thickness dimension d1 of the plug body is 0.4mm≤d1≤0.6mm, and the thickness dimension d2 of the sealing ridge is 0.5mm≤d2≤1mm;

[0018] When the insulating sealing plug is used to seal the pole hole of a double-glass photovoltaic module, the thickness dimension d1 of the plug body is 1.5mm≤d1≤2.5mm, and the thickness dimension d2 of the sealing ridge is 0.5mm≤d2≤1mm.

[0019] The present application also provides a photovoltaic assembly, comprising:

[0020] Light-facing panels;

[0021] A backlight plate having a polar hole, the backlight plate being located on one side of the light-facing plate;

[0022] A bus bar located between the light-facing plate and the backlight plate;

[0023] Any of the above-mentioned insulating sealing plugs cooperates with the pole hole, the end of the bus bar passes through the backlight plate from the lead-out hole, and the light-facing plate, the back-facing plate and the insulating sealing plug are laminated.

[0024] The beneficial effects of the embodiments of the present application are as follows: the insulating sealing plug provided by the present application is made of a hot-melt material. When it is applied to a photovoltaic module, after the plug is matched with the pole hole, the sealing ridge on the first side of the plug is located on the back of the photovoltaic module, and the bus bar is led out from the lead-out hole. When laminating the laminated parts in the photovoltaic module, the high temperature during lamination can be used to melt and deform the plug, so that the sealing ridge can be bonded to the glass on the back of the photovoltaic module. At the same time, the plug tightly seals the pole hole on the photovoltaic module and the fitting gap between the plug and the bus bar, effectively preventing external water vapor from entering the interior of the photovoltaic module through the fitting gap between the plug and the pole hole, ensuring the sealing and insulation of the pole hole, and simple operation.

[0025] When the insulating sealing plug body fits into the pole hole, both the side of the plug body located outside the photovoltaic module and the side of the plug body located inside the photovoltaic module have sealing ridges, effectively improving the sealing performance between the insulating sealing plug and the pole hole. Furthermore, by dividing the plug body into a first connector and a second connector, installation of the plug body is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0027] Figure 1 This is a schematic structural diagram of an insulating sealing plug provided in one embodiment of the present application;

[0028] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle insulating sealing plug and the middle pole hole of the photovoltaic module;

[0029] Figure 3 This is a schematic diagram of a structure in which sealing ridges are provided on both sides of an insulating sealing plug provided by an embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of a structure in which sealing ridges are provided on both sides of an insulating sealing plug provided by another embodiment of the present application;

[0031] Figure 5 yes Figure 4 Schematic diagram of the structure of the middle insulating sealing plug and the middle pole hole of the photovoltaic module;

[0032] Figure 6 This is a schematic diagram of the planar structure of an insulating sealing plug provided by an embodiment of the present application from a first perspective;

[0033] Figure 7This is a schematic diagram of the planar structure of the insulating sealing plug provided in one embodiment of the present application from a second perspective.

[0034] In the figure: 10, insulating sealing plug; 11, plug body; 11a, lead-out hole; 11b, sealing protrusion; 111, first connector; 112, second connector; 112a, connecting cylinder; 112b, exhaust hole; 12, insulating layer; 20, photovoltaic module; 21, light-facing panel; 22, backlight panel; 23, bus bar. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0038] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] See also Figure 1 and Figure 2 The present application provides an insulating sealing plug 10, which can be used to seal the polar hole of a photovoltaic module 20. The photovoltaic module 20 can be a single-glass photovoltaic module or a double-glass photovoltaic module. In the following embodiments of the present application, the photovoltaic module 20 is described as a double-glass photovoltaic module.

[0041] The insulating sealing plug 10 provided in this application includes a plug body 11 having a first side and a second side that oppose each other. The plug body 11 also has an extraction hole 11a formed therein, extending through the first and second sides and configured to allow the busbar 23 of the photovoltaic module 20 to be extracted. When the plug body 11 is engaged with the pole hole, the first side is positioned outside the photovoltaic module 20, and the second side is positioned inside the photovoltaic module 20. A sealing ridge 11b is formed on the first side, extending radially from the plug body 11 and having a larger radial dimension than the plug body 11.

[0042] It should be noted that the pathways for external water vapor to enter the photovoltaic module 20 through the pole hole include the gap between the plug body 11 and the pole hole, and the gap between the plug body 11 and the bus bar 23. When the present application provides an insulating sealing plug 10 for sealing the pole hole in the photovoltaic module 20, the insulating sealing plug 10 can be matched with the pole hole before the laminate of the photovoltaic module 20 is laminated, and the bus bar 23 in the photovoltaic module 20 can be led out from the lead-out hole 11a. After the plug body 11 is matched with the pole hole, the sealing ridge 11b on the first side is located on the back of the photovoltaic module 20, and then the laminate is laminated. When the insulating sealing plug 10 is laminated following the laminate, the plug body 11 is softened by heat and then flows slightly to achieve a better bonding effect between the plug body 11 and the edge of the pole hole and the edge of the plug body 11 and the bus bar 23. The sealing ridge 11b on the first side of the plug body 11 is bonded to the glass on the back of the photovoltaic module 20, effectively preventing external water vapor from entering the fitting gap between the plug body 11 and the pole hole, and further preventing water vapor from entering the interior of the photovoltaic module 20. Compared with only setting the sealing ridge 11b on the second side of the plug body 11, the sealing effect of the pole hole is effectively improved, thereby ensuring the water resistance and insulation of the pole hole in the photovoltaic module 20.

[0043] In some embodiments, the plug body 11 is made of a hot-melt material that softens when heated. The specific material of the plug body 11 is not limited in the present embodiment. For example, the plug body 11 may be made of butyl rubber, but this is not a limitation. To ensure the water-blocking and insulating properties of the plug body 11, the water vapor permeability of the material of the plug body 11 can be set to 0-2.00 g / m2 / 24h.

[0044] The plug body 11 fits within the electrode hole, effectively sealing the electrode hole. It is understood that the shape of the plug body 11 corresponds to the shape of the electrode hole. The specific shape of the plug body 11 is not limited in the present embodiment; it can be designed based on the shape of the electrode hole. For example, the electrode hole is generally circular, and the present embodiment illustrates a cylindrical plug body 11, but the present invention is not limited thereto.

[0045] The lead-out holes 11a on the plug body 11 are used to lead out the busbars 23 in the photovoltaic module 20. The number of lead-out holes 11a corresponds to the number of busbars 23 to be led out of the pole holes. For example, there are generally two busbars 23 to be led out of each pole hole in the photovoltaic module 20, and the number of lead-out holes 11a on the plug body 11 is two. In the embodiment of the present application, the number of lead-out holes 11a on the plug body 11 is two as an example, but the invention is not limited to this. It should be noted that the specific shape of the lead-out holes 11a in the embodiment of the present application is not limited. To ensure the tight fit between the lead-out holes 11a and the busbars 23, the shape of the lead-out holes 11a can be made to correspond to the cross-sectional shape of the busbars 23. For example, if the cross-sectional shape of the busbar 23 is generally rectangular, the shape of the lead-out holes 11a is correspondingly rectangular; if the cross-sectional shape of the busbar 23 is circular, the shape of the lead-out holes 11a is also circular. In the embodiment of the present application, the shape of the lead-out hole 11 a is a rectangle as an example for description.

[0046] Please also refer to Figures 1 to 5 , taking the plug body 11 as a cylindrical shape as an example, the plug body has a first side and a second side relative to each other. When the plug body 11 is matched with the pole hole, the first side of the plug body 11 is located outside the photovoltaic component 20, and the second side of the plug body 11 is located inside the photovoltaic component 20. A sealing ridge 11b is formed on the first side, and the sealing ridge 11b is extended in the radial direction of the plug body 11, and in the radial direction of the plug body 11, the size of the sealing ridge 11b is larger than the size of the plug body 11. In this way, after the plug body 11 is matched with the pole hole, the sealing ridge 11b is located on the back of the photovoltaic component to cover the matching gap between the plug body 11 and the pole hole, thereby preventing water vapor from entering the gap between the plug body 11 and the pole hole, and facilitating the installation of the plug body 11. The embodiment of the present application does not limit the specific shape of the sealing ridge 11b. For example, it can be circular, rectangular, regular pentagonal or regular hexagonal, but is not limited to this. Figure 3 and Figure 4 As shown. Since the shape formed by the sealing ridge 11b is not limited to a circle, when the shape formed by the sealing ridge 11b is a rectangle or other shapes, the size of the sealing ridge 11b in the radial direction of the plug body 11 is larger than the size of the plug body 11. It can be understood that the minimum length of the sealing ridge 11b in the radial direction is also larger than the length of the plug body 11 at the corresponding position in the radial direction.

[0047] like Figures 3 to 5As shown, in some embodiments, the second side of the plug body 11 is also formed with a sealing ridge 11b, that is, both the first and second sides of the plug body 11 are formed with sealing ridges 11b. By forming sealing ridges 11b on both the first and second sides of the plug body 11, the gaps on both sides of the plug body 11 when mated with the pole hole are covered, effectively improving the sealing performance of the insulating sealing plug 10 with the pole hole. When both the first and second sides of the plug body 11 are formed with sealing ridges 11b, to facilitate the sealing of the insulating sealing plug 10 in the pole hole, in some embodiments, the plug body 11 can include a first connector 111 and a second connector 112, with the first side of the plug body 11 formed on the first connector 111 and the second side of the plug body 11 formed on the second connector 112. In this way, when mating the plug body 11 with the pole hole, the first connector 111 and the second connector 112 can be aligned with the pole hole from either side of the glass plate forming the pole hole in the photovoltaic module 20, facilitating the installation of the plug body 11.

[0048] Of course, after the first connector 111 and the second connector 112 are respectively fitted with the pole hole from both sides of the glass plate, the first connector 111 and the second connector 112 can be connected and fitted with each other to ensure the stability of the plug body 11 and the pole hole. For example, the first connector 111 and the second connector 112 can be connected by a snap connection, a pin-to-pin hole structure connection, or a threaded structure connection, but are not limited to these. In some embodiments, one of the first connector 111 and the second connector 112 has an internal connecting thread, and the other has an external connecting thread that fits with the internal connecting thread. For example, in the embodiment of the present application, the example of the first connector 111 having an internal connecting thread and the second connector 112 having an external connecting thread is used for explanation, but is not limited to this. When installing the insulating sealing plug 10, the second connector 112 can be fitted with the pole hole on one side of the glass plate first, and then the first connector 111 can be installed on the other side of the glass plate.

[0049] It can be understood that one of the first connecting body 111 and the second connecting body 112 having the internal connecting thread has a connecting cylindrical portion 112a, so that the internal connecting thread can be formed with the inner circumference of the connecting cylindrical portion 112a. Figure 3 and Figure 4As shown, in some embodiments, the circumference of the connecting cylinder 112a has at least one vent hole 112b. The vent hole 112b is provided radially through the connecting cylinder 112a. When the plug body 11 is heated and melted after the first connector 111 and the second connector 112 are connected and laminated, the vent hole 112b is used to exhaust gas between the connecting internal thread and the connecting external thread. The circumference of the connecting cylinder 112a has at least one vent hole 112b. It is understood that when the circumference of the connecting cylinder 112a has multiple vent holes 112b, the multiple vent holes 112b are distributed along the circumference of the connecting cylinder 112a, for example, they can be evenly distributed, but are not limited to this. By providing the vent holes 112b, air in the internal threaded connection can be exhausted after the first connector 111 and the second connector 112 are screwed together, allowing the first connector 111 and the second connector 112 to be better bonded together during lamination and heating.

[0050] like Figures 1 to 5 As shown, in some embodiments, the insulating sealing plug 10 may further include an insulating layer 12. The insulating layer 12 is detachably attached to one side of the plug body 11, and when the plug body 11 is matched with the pole hole, the insulating layer 12 is located outside the photovoltaic module 20. In the embodiment of the present application, there is no restriction on the specific attachment method of the insulating layer 12 to the plug body 11. For example, it may be attached electrostatically, or a backing adhesive may be provided on the insulating layer 12, but it is not limited thereto. By providing the insulating layer 12, on the one hand, it can prevent the plug body 11 from being damaged during the production process and affecting the production yield. On the other hand, it can prevent the surface of the plug body 11 from being damaged during the installation and use of the plug body 11. It should be noted that after the plug body 11 and the photovoltaic module 20 are laminated, the insulating layer 12 can be torn off or retained.

[0051] In some embodiments, the surface of the insulating layer 12 facing away from the plug body 11 is roughened. After the insulating sealing plug 10 is laminated with the laminate in the photovoltaic module 20, the insulating layer 12 can be retained. By making the surface of the insulating layer 12 facing away from the plug body 11 roughened, the adhesion between the insulating layer 12 and the silicone rubber can be improved. In this way, after the insulating sealing plug 10 is laminated with the laminate, a junction box can be directly mounted on the surface of the insulating layer 12 facing away from the plug body 11 and then potted with silicone rubber.

[0052] In some embodiments, the insulating sealing plug 10 is used to seal the pole hole of a single-glass photovoltaic module or the pole hole of a double-glass photovoltaic module. When the insulating sealing plug is used to seal the pole hole of a single-glass photovoltaic module, the thickness dimension d1 of the plug body 11 is 0.4mm≤d1≤0.6mm, and the thickness dimension d2 of the sealing ridge 11b is 0.5mm≤d2≤1mm. When the insulating sealing plug 10 is used to seal the pole hole of a double-glass photovoltaic module, the thickness dimension d1 of the plug body 11 is 1.5mm≤d1≤2.5mm, and the thickness dimension d2 of the sealing ridge 11b is 0.5mm≤d2≤1mm. Figure 6 As shown, it should be noted that the thickness dimension of the plug body 11 and the thickness dimension of the sealing protrusion 11b are the dimensions in the direction of the central axis of the insulating sealing plug 10.

[0053] There are also certain differences in the radial dimensions of the plug body 11 in the insulating sealing plugs for sealing the pole holes of single-glass photovoltaic modules and the pole holes of double-glass photovoltaic modules. For example, when used to seal the pole holes of single-glass photovoltaic modules, the radial dimension d3 of the plug body 11 is 12mm<d3<25mm; when used to seal the pole holes of double-glass photovoltaic modules, the radial dimension d3 of the plug body 11 is 8mm<d3<20mm.

[0054] Since the busbars 23 in the sealed single-glass photovoltaic module and the double-glass photovoltaic module can have the same size, taking the lead-out hole 11a on the insulating sealing plug 10 as a rectangular example, as shown in FIG. Figure 7 As shown, the length L and width D of the lead-out hole 11 a may be in the range of: 0.5 mm ≤ D ≤ 0.7 mm, 5 mm ≤ L ≤ 8 mm, respectively.

[0055] In addition, it should be noted that in order for the photovoltaic module 20 to be connected to the junction box, the junction box can cover the sealing protrusion 11b of the insulating sealing plug 10, and the width of the sealing protrusion 11b shall not exceed 25 mm. For example, when the sealing protrusion 11b is square, it means that the side length of the sealing protrusion 11b does not exceed 25 mm; when the sealing protrusion 11b is circular, it means that the diameter of the sealing protrusion 11b does not exceed 25 mm; when the sealing protrusion 11b is a regular hexagon, it means that the distance between the two opposite sides does not exceed 25 mm, but the size of the sealing protrusion 11b is not limited to this.

[0056] like Figure 2 and Figure 5As shown, in some embodiments, the present application further provides a photovoltaic module 20. The photovoltaic module 20 includes a light-facing plate 21, a backlight plate 22, a bus bar 23, and the insulating sealing plug 10 in any of the above embodiments. The polar holes of the photovoltaic module 20 are formed on the backlight plate 22, the backlight plate 22 is located on one side of the light-facing plate 21, and the bus bar 23 is located between the light-facing plate 21 and the backlight plate 22. The insulating sealing plug 10 cooperates with the polar holes, and the end of the bus bar 23 passes through the backlight plate 22 from the lead-out hole 11a, and the light-facing plate 21, the backlight plate 22, and the insulating sealing plug 10 are laminated.

[0057] In some embodiments, the photovoltaic assembly 20 may further include a junction box, wherein the junction box is connected to the bus bar 23 drawn out from the lead-out hole 11 a in the photovoltaic assembly 20 .

[0058] The photovoltaic assembly 20 provided in the present application adopts all technical solutions of all embodiments of the above-mentioned insulating sealing plug 10, and therefore has at least all the beneficial effects brought about by the technical solutions of the embodiments of the above-mentioned insulating sealing plug 10, which will not be described one by one here.

[0059] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An insulating sealing plug, characterized in that: Used for sealing the pole hole of a photovoltaic module in a photovoltaic module, the insulating sealing plug comprises: A plug body having a first side and a second side opposite to each other, the plug body further forming a lead-out hole, the lead-out hole being provided through the first side and the second side for leading out a bus bar of a photovoltaic module; when the plug body is engaged with the pole hole, the first side is located outside the photovoltaic module, and the second side is located inside the photovoltaic module; a sealing ridge is formed on the first side, the sealing ridge extending in a radial direction of the plug body, and the size of the sealing ridge in the radial direction of the plug body is larger than the size of the plug body; The insulating layer is detachably attached to one side of the plug body, and when the plug body is matched with the pole hole, the insulating layer is located outside the photovoltaic component.

2. The insulating sealing plug according to claim 1, wherein: The second side is also formed with the sealing ridge.

3. The insulating sealing plug according to claim 2, wherein: The plug body includes a first connecting body and a second connecting body, the first side is formed on the first connecting body, and the second side is formed on the second connecting body.

4. The insulating sealing plug according to claim 3, wherein: The first connector and the second connector are detachably connected.

5. The insulating sealing plug according to claim 4, wherein: One of the first connecting body and the second connecting body has an internal connecting thread, and the other one of the first connecting body and the second connecting body has an external connecting thread matching the internal connecting thread.

6. The insulating sealing plug according to claim 5, wherein: The connecting internal thread is distributed on the inner circumference of the connecting cylinder, and the circumference of the connecting cylinder has at least one exhaust hole, and the exhaust hole is arranged to penetrate along the radial direction of the connecting cylinder. When the first connector and the second connector are connected and laminated, the plug body is heated and melted, and the exhaust hole is used to discharge the gas between the connecting internal thread and the connecting external thread.

7. The insulating sealing plug according to claim 1, wherein: The plug body is made of hot-melt material.

8. The insulating sealing plug according to claim 1, wherein: The surface of the insulating layer on a side away from the plug body is a rough surface.

9. The insulating sealing plug according to claim 1, wherein: The insulating sealing plug is used to seal the pole hole of a single-glass photovoltaic module or the pole hole of a double-glass photovoltaic module; When the insulating sealing plug is used to seal the pole hole of a single-glass photovoltaic module, the thickness dimension d1 of the plug body is 0.4mm≤d1≤0.6mm, and the thickness dimension d2 of the sealing ridge is 0.5mm≤d2≤1mm; When the insulating sealing plug is used to seal the pole hole of a double-glass photovoltaic module, the thickness dimension d1 of the plug body is 1.5mm≤d1≤2.5mm, and the thickness dimension d2 of the sealing ridge is 0.5mm≤d2≤1mm.

10. A photovoltaic module, characterized in that: The photovoltaic module comprises: Light-facing panels; A backlight plate having a polar hole, the backlight plate being located on one side of the light-facing plate; A bus bar located between the light-facing plate and the backlight plate; The insulating sealing plug according to any one of claims 1 to 9 cooperates with the pole hole, the end of the bus bar passes through the backlight plate from the lead-out hole, and the light-facing plate, the back-facing plate and the insulating sealing plug are laminated.

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