Cable storage device, junction box and photovoltaic module

Abstract

The utility model relates to a cable storage device, a junction box and a photovoltaic module. In the cable storage device, a cable can be wound around the annular winding piece. In the using process, a cable can be wound around the annular winding piece, and then the cable is stored. When the cable needs to be used, the cable can be pulled out. After the cable is used up, the pulling force on the cable can be reduced, the flat spiral spring rotates reversely under the action of the elastic force of the flat spiral spring, the annular winding piece is driven to rotate reversely, and then the cable can be wound on the annular winding piece again. The cable storage device can store the cable, and when the cable needs to be used, the cable can be pulled out and stored again conveniently, so that the interference between the cable and the outside can be reduced, and the influence of the cable on the production and installation of the photovoltaic module is reduced.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a cable storage device, a junction box and a photovoltaic assembly. Background Art

[0002] In photovoltaic modules, a junction box is needed to connect to the busbar inside the solar cell, and the solar cells are interconnected through the junction box, and finally the current inside the solar cell is led out through the cable in the junction box. In the structure of the junction box, the cable is often long to facilitate the connection of the cable to the external device. However, in traditional junction boxes, the long cables are exposed from the box body of the junction box, so that during the production and installation of photovoltaic modules, the cables are prone to interfere with the outside world, thereby affecting the production and installation of photovoltaic modules. Utility Model Content

[0003] Based on this, it is necessary to provide a cable storage device, a junction box and a photovoltaic module. The cable storage device can store cables well, reduce interference between cables and the outside world, and reduce the impact of cables on the production and installation of photovoltaic modules.

[0004] A cable storage device comprises a first shell, a second shell, a plane scroll spring and an annular winding member. The first shell has a first surface, the second shell has a second surface, and the first surface and the second surface are arranged opposite to each other. A first annular protrusion is provided on the first surface, and a second annular protrusion is provided on the second surface, and the first annular protrusion and the second annular protrusion are arranged mutually. A first fixing member is also provided on the first surface, and the first fixing member is located on the outside of the first annular protrusion. A second fixing member is also provided on the second surface, and the second fixing member is located on the outside of the second annular protrusion. The distances between the first fixing member and the second fixing member and the center of the first annular protrusion are unequal. The plane scroll spring is wound around the periphery of the first annular protrusion and the second annular protrusion, and one end of the plane scroll spring is connected to the first fixing member, and the other end is connected to the second fixing member. The annular winding member protrudes from the first surface and is located on the periphery of the first annular protrusion, and the annular winding member is used for winding the cable to be stored. The annular winding member and the first annular protrusion are located on the same side of the first surface, or the annular winding member and the first annular protrusion are located on two sides of the first surface respectively.

[0005] In the above-mentioned cable storage device, the annular winding piece can be used for the cable to be wound around. During use, the cable can be wound around the annular winding piece, and then the cable can be stored. When the cable needs to be used, the cable can be pulled out, and the annular winding piece is rotated under force, so that the first shell and the second shell can be rotated relative to each other. During the rotation process, the planar volute spring is gradually stressed and converts the force into its own elastic force. When the cable is used up, the pulling force on the cable can be reduced. At this time, the planar volute spring rotates in the opposite direction under the action of its own elastic force, driving the annular winding piece to rotate in the opposite direction, so that the cable can be wrapped around the annular winding piece again. Therefore, the above-mentioned cable storage device can store the cable, and when the cable needs to be used, the cable can be pulled out and stored again more conveniently, which can reduce the interference between the cable and the outside world and reduce the impact of the cable on the production and installation of photovoltaic modules.

[0006] In some embodiments, one of the first annular protrusion and the second annular protrusion is provided with a through hole and the other is provided with a stopper, and the stopper can be snapped into the through hole to limit the relative rotation between the first annular protrusion and the second annular protrusion.

[0007] In some embodiments, the first shell is a hollow structure on the inner side of the first annular protrusion, and the second shell is a hollow structure on the inner side of the second annular protrusion, so that the inner sides of the first annular protrusion and the second annular protrusion that are nested with each other form a accommodating cavity.

[0008] In some embodiments, a distance between the first fixing element and the center of the first annular protrusion is greater than a distance between the second fixing element and the center of the first annular protrusion.

[0009] A junction box comprises a junction box body and the cable storage device; the cables of the junction box body are wound around the outside of the annular winding member.

[0010] In some embodiments, the first shell is a hollow structure on the inner side of the first annular protrusion, and the second shell is a hollow structure on the inner side of the second annular protrusion, so that the inner sides of the first annular protrusion and the second annular protrusion that are nested with each other form a accommodating cavity; the junction box body is located in the accommodating cavity.

[0011] In some embodiments, the first shell has a third surface opposite to the first surface, the annular winding member is located on the third surface, a third annular protrusion is provided on the third surface, and the third annular protrusion is located on the inner side of the annular winding member;

[0012] The third annular protrusion is provided with a first notch for allowing the cable to pass through;

[0013] The annular winding component is provided with a second notch, and the cable passes through the first notch and the second notch in sequence and is wound around the outer side of the annular winding component.

[0014] In some embodiments, the junction box further includes a rotating roller; the rotating roller is disposed at the second notch of the annular winding member, and the cable covers the rotating roller and surrounds the outer side of the annular winding member.

[0015] In some embodiments, an inner diameter of the third annular protrusion is equal to an inner diameter of the first annular protrusion.

[0016] A photovoltaic assembly comprises a solar cell and a junction box; the junction box is electrically connected to the solar cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a junction box in a first viewing angle in one embodiment of the present application.

[0018] Figure 2 for Figure 1 A schematic structural diagram of the corresponding junction box at a second viewing angle.

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of the corresponding junction box from a third perspective.

[0020] Figure 4 for Figure 1 A schematic structural diagram of the first shell in the corresponding junction box at a first viewing angle.

[0021] Figure 5 for Figure 1 A schematic structural diagram of the first shell in the corresponding junction box at a second viewing angle.

[0022] Figure 6 for Figure 1 A schematic structural diagram of the first shell in the corresponding junction box at a third viewing angle.

[0023] It is understandable that the first perspective, the second perspective and the third perspective are all different.

[0024] Description of the markings in the figure:

[0025] 1. Junction box; 11. Junction box body; 111. Cable; 112. Box body; 113. Diode; 114. Copper sheet; 12. Cable storage device; 121. First shell; 122. Second shell; 123. Planar spiral spring; 124. Annular winding member; 125. First annular protrusion; 126. Second annular protrusion; 127. First fixing member; 128. Through hole; 129. Stop member; 1210. Third annular protrusion; 1211. First notch; 1212. Limiting groove; 1213. Second notch; 13. Rotating roller. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] 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", "axial", "radial", "circumferential" 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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 at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] See also Figure 1~Figure 3 In one embodiment of the present application, a junction box 1 is provided. The junction box 1 includes a junction box body 11 and a cable storage device 12. The cable 111 of the junction box body 11 is wrapped around the outside of the annular winding member 124 of the cable storage device 12. In the junction box 1 of this embodiment, the cable 111 can be well stored, and the cable 111 can be easily pulled out during use. After use, the cable 111 can also be easily retracted. In this way, the interference between the cable 111 and the outside world can be reduced to a good extent, and the influence of the cable 111 on the production and installation of photovoltaic modules can be reduced.

[0032] It is understandable that the junction box body 11 includes a cable 111, a box body 112, a diode 113 and a copper sheet 114. The diode 113 and the copper sheet 114 are located in the box body 112. The cable 111 extends from the inside of the box body 112. The diode 113 can be activated when the photovoltaic module is shaded or the internal battery is damaged, thereby protecting the module from burning and increasing the power generation. The box body 112 is usually made of materials such as PPO (polyphenylene ether), PC (polycarbonate), and PA (polyamide), which has good anti-aging and UV resistance, good waterproof and dustproof protection, and can meet the use requirements under harsh outdoor environmental conditions.

[0033] In some embodiments, the cable storage device 12 includes a first housing 121, a second housing 122, a planar spiral spring 123, and an annular winding member 124. The first housing 121 has a first surface, the second housing 122 has a second surface, and the first surface and the second surface are arranged opposite to each other. A first annular protrusion 125 is provided on the first surface, and a second annular protrusion 126 is provided on the second surface, and the first annular protrusion 125 and the second annular protrusion 126 are mutually sleeved. A first fixing member 127 is also provided on the first surface, and the first fixing member 127 is located on the outside of the first annular protrusion 125. A second fixing member (not shown in the figure) is also provided on the second surface, and the second fixing member is located on the outside of the second annular protrusion 126. The distances between the first fixing member 127 and the second fixing member from the center of the first annular protrusion 125 are unequal. The planar spiral spring 123 is wound around the periphery of the first annular protrusion 125 and the second annular protrusion 126. One end of the planar spiral spring 123 is connected to the first fixing member 127, and the other end is connected to the second fixing member. The annular winding member 124 protrudes from the first surface and is located outside the first annular protrusion 125. The annular winding member 124 is used to be wound around the cable 111 to be stored. The annular winding member 124 and the first annular protrusion 125 are located on the same side of the first surface, or the annular winding member 124 and the first annular protrusion 125 are located on both sides of the first surface respectively.

[0034] In the cable storage device 12 of this embodiment, the annular winding member 124 can be used for the cable 111 to be wound around. During use, the cable 111 can be wound around the annular winding member 124, and then the cable 111 can be stored. When the cable 111 needs to be used, the cable 111 can be pulled out, and the annular winding member 124 is rotated under force, so that the first shell 121 and the second shell 122 can be rotated relative to each other. During the rotation process, the planar volute spring 123 is gradually stressed and converts the stress into its own elastic force. When the cable 111 is used, the pulling force on the cable 111 can be reduced. At this time, the planar volute spring 123 rotates in the opposite direction under the action of its own elastic force, driving the annular winding member 124 to rotate in the opposite direction, so that the cable 111 can be wound around the annular winding member 124 again. Therefore, the cable storage device 12 can store the cable 111, and when the cable 111 is needed, the cable 111 can be pulled out and stored again more conveniently, which can reduce the interference between the cable 111 and the outside world and reduce the impact of the cable 111 on the production and installation of photovoltaic modules.

[0035] It is understandable that the cables 111 of the junction box body 11 may have different length specifications. The cable storage device 12 in this embodiment can achieve standardization and unification of the cables 111. When the cables 111 of the corresponding length are needed, the cables 111 of the corresponding length can be pulled out.

[0036] It is understandable that, during the use of the cable storage device 12 , the second shell 122 may be fixed, and the cable 111 may be pulled out and retracted by rotating the first shell 121 .

[0037] It can also be understood that the first annular protrusion 125 and the second annular protrusion 126 are mutually sleeved, and the first annular protrusion 125 can be sleeved on the outside of the second annular protrusion 126, or the first annular protrusion 125 can be sleeved on the inside of the second annular protrusion 126.

[0038] It is also understandable that the plane scroll spring 123 can be a carbon steel spring, a low manganese spring steel spring, a silicon manganese spring steel spring, a chrome vanadium steel spring, a piano wire spring, etc. The design of various parameters of the plane scroll spring 123 can refer to JB / T7366-1994 "Machinery Industry Standard of the People's Republic of China".

[0039] In some embodiments, the inner diameter of the first annular protrusion 125 is 55 mm to 80 mm. The outer diameter of the annular winding member 124 is 90 mm to 150 mm. The inner diameter of the second annular protrusion 126 is 60 mm to 80 mm.

[0040] In some embodiments, the cross-sections of the first shell 121 and the second shell 122 are circular. The annular winding member 124 can serve as the outer wall of the first shell 121. That is, the outer diameter of the first shell 121 can be 90 mm to 150 mm. Optionally, the outer diameter of the second shell 122 can be 90 mm to 150 mm.

[0041] In some embodiments, the thickness of the first shell 121 is 1 mm to 5 mm. The thickness of the second shell 122 is 1 mm to 5 mm. The thickness of the first annular protrusion 125 is 1 mm to 5 mm. The thickness of the second annular protrusion 126 is 1 mm to 5 mm. The thickness of the annular winding member 124 is 1 mm to 5 mm.

[0042] It is understandable that the outer diameters of the first shell 121 and the second shell 122 may be greater than the outer diameter of the annular winding member 124 , so that after the annular winding member 124 surrounds the cable 111 , the first shell 121 and the second shell 122 may protect the cable 111 .

[0043] It can also be understood that the first housing 121 may be a PPO housing. The second housing 122 may be a PPO housing. The first housing 121 and the second housing 122 may be obtained by injection molding.

[0044] In some embodiments, one of the first annular protrusion 125 and the second annular protrusion 126 is provided with a through hole 128 and the other is provided with a stopper 129 , which can be snapped into the through hole 128 to limit the relative rotation between the first annular protrusion 125 and the second annular protrusion 126 .

[0045] Optionally, a through hole 128 is provided on the first annular protrusion 125, and a stopper 129 is provided on the surface of the second annular protrusion 126 facing the first annular protrusion 125, and the stopper 129 can be inserted into the through hole 128 to limit the relative rotation between the first annular protrusion 125 and the second annular protrusion 126. Alternatively, a through hole 128 is provided on the second annular protrusion 126, and a stopper 129 is provided on the surface of the first annular protrusion 125 facing the second annular protrusion 126, and the stopper 129 can be inserted into the through hole 128 to limit the relative rotation between the first annular protrusion 125 and the second annular protrusion 126.

[0046] By setting the through hole 128 and the stopper 129, the relative rotation of the first annular protrusion 125 and the second annular protrusion 126 can be flexibly controlled. When the pulled-out length of the cable 111 meets the use requirements, the stopper 129 can be inserted into the through hole 128 to keep the cable 111 at the required use length. After use, the stopper 129 can be disengaged from the through hole 128, and then the first annular protrusion 125 can be rotated in the opposite direction to retract the cable 111.

[0047] In some embodiments, the stopper 129 is a spring buckle. The spring buckle can make the stopper 129 snap into and out of the through hole 128 smoother.

[0048] In some embodiments, there are multiple through holes 128, and the multiple through holes 128 are arranged in sequence. Optionally, the number of through holes 128 is 2 to 30. For example, the number of through holes 128 can be 2, 5, 10, 15, 20, 25, 30, etc. Optionally, the shape of the through hole 128 can be circular or square.

[0049] In some embodiments, the first shell 121 is a hollow structure inside the first annular protrusion 125, and the second shell 122 is a hollow structure inside the second annular protrusion 126, so that the inner sides of the first annular protrusion 125 and the second annular protrusion 126 that are nested with each other form an accommodating cavity. By setting the accommodating cavity, on the one hand, the weight of the cable storage device 12 can be reduced, and on the other hand, the junction box body 11 can be set in the accommodating cavity, thereby reducing the overall volume of the junction box 1.

[0050] In some embodiments, the distance between the first fixing member 127 and the center of the first annular protrusion 125 is greater than the distance between the second fixing member and the center of the first annular protrusion 125 .

[0051] In the case of the junction box 1, in some embodiments, the first shell 121 is a hollow structure inside the first annular protrusion 125, and the second shell 122 is a hollow structure inside the second annular protrusion 126, so that the inner sides of the first annular protrusion 125 and the second annular protrusion 126 that are mutually nested form a receiving cavity. The junction box body 11 is located in the receiving cavity. In this way, the junction box 1 can have a smaller volume.

[0052] It is understandable that when the junction box 1 is used, the second shell 122 and the junction box body 11 can be fixed, and the cable 111 can be pulled out and retracted by rotating the first shell 121 .

[0053] See also Figure 4~Figure 5 In some embodiments, the first housing 121 has a third surface opposite to the first surface, the annular winding member 124 is located on the third surface, a third annular protrusion 1210 is provided on the third surface, and the third annular protrusion 1210 is located on the inner side of the annular winding member 124. A first notch 1211 is provided on the third annular protrusion 1210 for the cable 111 to pass through. A second notch 1213 is provided on the annular winding member 124, and the cable 111 passes through the first notch 1211 and the second notch 1213 in sequence and surrounds the outer side of the annular winding member 124. By arranging the annular winding member 124 on the third surface, the interference caused by the relative rotation of the first annular protrusion 125 and the second annular protrusion 126 on the cable 111 can be reduced, so that the cable can be pulled out and retracted more conveniently. By setting the first notch 1211 and the second notch 1213, the interference of the pulling out and retracting of the cable 111 on the rotation of the first annular protrusion 125 can be reduced.

[0054] Optionally, the shape of the first notch 1211 may be square or arc-shaped. Further optionally, the diameter of the first notch 1211 is greater than 3 mm.

[0055] In some embodiments, the thickness of the third annular protrusion 1210 is 1 mm to 5 mm.

[0056] In some embodiments, the junction box 1 further includes a rotating roller 13. The rotating roller 13 is disposed at the second notch 1213 of the annular winding member 124, and the cable 111 covers the rotating roller 13 and wraps around the outside of the annular winding member 124. After the rotating roller 13 is provided, the cable 111 can be covered on the rotating roller 13 when being pulled out and retracted, and the cable 111 can be pulled out and retracted more smoothly through the rotation of the rotating roller 13. At the same time, the provision of the rotating roller 13 can also reduce the friction between the cable 111 and the annular winding member 124, thereby extending the service life of the cable 111. Figure 5 and Figure 6 In the illustrated embodiment, there are two rotating rollers 13. The two rotating rollers 13 are respectively arranged on both sides of the second notch 1213.

[0057] In some embodiments, the inner diameter of the third annular protrusion 1210 is equal to the inner diameter of the first annular protrusion 125 .

[0058] In some embodiments, a limiting groove 1212 is further provided on the first housing 121. The limiting groove 1212 can limit the position of the cable 111, so that the cable 111 can be pulled out and retracted more stably.

[0059] Another embodiment of the present application provides a photovoltaic module, which includes a solar cell and the above-mentioned junction box 1, wherein the junction box 1 is electrically connected to the solar cell.

[0060] In the photovoltaic module of this embodiment, the cable 111 of the junction box 1 can be well stored in the cable storage device 12. At the same time, when the cable 111 needs to be used, the cable 111 can be easily pulled out and retracted, which can reduce the interference between the cable 111 and the outside world and reduce the impact of the cable 111 on the production and installation of the photovoltaic module.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims, and the specification and drawings may be used to interpret the contents of the claims.

Claims

1. A cable storage device (12), It is characterized in that The invention comprises a first shell (121), a second shell (122), a planar spiral spring (123) and an annular winding member (124); the first shell (121) has a first surface, the second shell (122) has a second surface, and the first surface and the second surface are arranged opposite to each other; a first annular protrusion (125) is provided on the first surface, and a second annular protrusion (126) is provided on the second surface, and the first annular protrusion (125) and the second annular protrusion (126) are arranged in a mutually sleeved manner; A first fixing member (127) is also provided on the first surface, and the first fixing member (127) is located outside the first annular protrusion (125); a second fixing member is also provided on the second surface, and the second fixing member is located outside the second annular protrusion (126); the first fixing member (127) and the second fixing member are at unequal distances from the center of the first annular protrusion (125); The planar spiral spring (123) is wound around the periphery of the first annular protrusion (125) and the second annular protrusion (126); one end of the planar spiral spring (123) is connected to the first fixing member (127), and the other end is connected to the second fixing member; The annular winding member (124) protrudes from the first surface and is located on the periphery of the first annular protrusion (125); the annular winding member (124) is used for winding around the cable (111) to be stored; the annular winding member (124) and the first annular protrusion (125) are located on the same side of the first surface, or the annular winding member (124) and the first annular protrusion (125) are respectively located on two sides of the first surface.

2. The cable storage device (12) according to claim 1, It is characterized in that One of the first annular protrusion (125) and the second annular protrusion (126) is provided with a through hole (128) and the other is provided with a stopper (129), wherein the stopper (129) can be inserted into the through hole (128) to limit the relative rotation between the first annular protrusion (125) and the second annular protrusion (126).

3. The cable storage device (12) according to claim 1 or 2, It is characterized in that The first shell (121) is a hollow structure on the inner side of the first annular protrusion (125), and the second shell (122) is a hollow structure on the inner side of the second annular protrusion (126), so that the inner sides of the first annular protrusion (125) and the second annular protrusion (126) which are nested with each other form a receiving cavity.

4. The cable storage device (12) according to claim 1 or 2, It is characterized in that The distance between the first fixing member (127) and the center of the first annular protrusion (125) is greater than the distance between the second fixing member and the center of the first annular protrusion (125).

5. A junction box (1), It is characterized in that It comprises a junction box body (11) and a cable storage device (12) according to any one of claims 1 to 4; the cable (111) of the junction box body (11) is wound around the outside of the annular winding member (124).

6. The junction box (1) according to claim 5, It is characterized in that The first shell (121) is a hollow structure on the inner side of the first annular protrusion (125), and the second shell (122) is a hollow structure on the inner side of the second annular protrusion (126), so that the inner sides of the first annular protrusion (125) and the second annular protrusion (126) which are nested with each other form a receiving cavity; the junction box body (11) is located in the receiving cavity.

7. The junction box (1) according to claim 6, It is characterized in that The first shell (121) has a third surface opposite to the first surface, the annular winding member (124) is located on the third surface, a third annular protrusion (1210) is provided on the third surface, and the third annular protrusion (1210) is located on the inner side of the annular winding member (124); The third annular protrusion (1210) is provided with a first notch (1211) for allowing the cable (111) to pass through; The annular winding piece (124) is provided with a second notch (1213), and the cable (111) passes through the first notch (1211) and the second notch (1213) in sequence and wraps around the outside of the annular winding piece (124).

8. The junction box (1) according to claim 7, It is characterized in that The junction box (1) further comprises a rotating roller (13); the rotating roller (13) is arranged at the second notch (1213) of the annular winding member (124); the cable (111) covers the rotating roller (13) and surrounds the outside of the annular winding member (124).

9. The junction box (1) according to claim 7, It is characterized in that The inner diameter of the third annular protrusion (1210) is equal to the inner diameter of the first annular protrusion (125).

10. A photovoltaic module, It is characterized in that It comprises a solar cell and a junction box (1) according to any one of claims 5 to 9; the junction box (1) is electrically connected to the solar cell.

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