Junction box and photovoltaic module

Abstract

The junction box comprises a box body and a cover plate, two opposite sides of the box body and the cover plate are respectively provided with a rotating structure and a locking structure, the rotating structure comprises a mounting plate and a mounting rod, the mounting plate extends outwards from one of the box body and the cover plate, and the mounting rod extends outwards from the other one of the box body and the cover plate. A mounting groove perpendicular to the extension direction of the mounting plate is formed in the mounting plate, a rotating shaft perpendicular to the extension direction of the mounting rod is arranged on the mounting rod, and the rotating shaft is rotationally mounted in the mounting groove. The cover plate and the box body are connected through the rotating structure, the cover plate can be prevented from being separated from the box body after the junction box is opened, the cover plate is prevented from falling off and being lost, the locking structure can lock the position of the cover plate when the junction box is in a closed state, the cover plate is prevented from rotating, and the leakproofness of the junction box in the closed state is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaics, and particularly relates to a junction box and a photovoltaic module. Background Art

[0002] A photovoltaic module is a core component of a photovoltaic power generation system, which mainly consists of photovoltaic cells, interconnection bars, busbars, photovoltaic glass, encapsulant films, junction boxes and other components. Among them, the junction box is connected to photovoltaic cables and electronic components such as diodes are installed inside to control the on-off of specific circuits in the photovoltaic module.

[0003] Traditional junction boxes generally consist of a box body and a cover plate. The cover plate is generally set as an independent component, which is snap-fitted to the box body. When it is necessary to disassemble the junction box to inspect and replace its internal components, the cover plate will be completely separated from the box body after being disassembled, which is likely to cause the cover plate to fall or be lost. And when reinstalling the cover plate, it is necessary to align and snap-fit the box body and the cover plate again, increasing the operation difficulty of closing the junction box.

[0004] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a junction box, in which the box body and the cover plate are connected by a rotating structure to prevent the cover plate from separating from the box body after the junction box is opened, and to avoid the cover plate from falling and being lost.

[0006] To achieve the above purpose, a specific embodiment of the present utility model provides a junction box, which includes a box body and a cover plate. Rotating structures and locking structures are respectively provided on opposite sides of the box body and the cover plate. Among them, the rotating structure includes a mounting plate extending outward from one of the box body and the cover plate, and a mounting rod extending outward from the other of the box body and the cover plate. An installation groove perpendicular to the extending direction of the mounting plate is formed on the mounting plate, and a rotating shaft perpendicular to the extending direction of the mounting rod is provided on the mounting rod. The rotating shaft is rotatably installed in the installation groove.

[0007] In one or more embodiments of the present utility model, the mounting plate extends outward from one side of the box body, the installation groove is formed above the mounting plate, and the mounting rod extends outward from one side of the cover plate.

[0008] In one or more embodiments of the present utility model, a first mounting member and a second mounting member are provided on the mounting plate. The first mounting member extends above the second mounting member, and the first mounting member and the second mounting member enclose a first installation groove with an opening facing the locking structure.

[0009] In one or more embodiments of the present utility model, the first mounting member includes a first main body portion extending upward from the mounting plate and a first extending portion extending from the top of the first main body portion toward the box body. The lower surface of the first extending portion is entirely or partially an arc surface. The second mounting member is located below the first extending portion, and the upper surface of the second mounting member is entirely or partially an arc surface. The distance between one end of the first extending portion close to the box body and one end of the second mounting member close to the box body is less than the diameter of the rotating shaft.

[0010] In one or more embodiments of the present utility model, two relatively arranged third mounting members are provided on the mounting plate. The two third mounting members enclose a second mounting groove with an upward opening, and the distance between the tops of the two third mounting members is less than the diameter of the rotating shaft.

[0011] In one or more embodiments of the present utility model, entirely or partially arc surfaces are provided on two opposite surfaces of the third mounting member.

[0012] In one or more embodiments of the present utility model, the locking structure includes a locking member, an avoidance groove, and a locking plate. The avoidance groove is provided on a side of the cover plate away from the rotating structure. The locking plate is provided in the avoidance groove. The locking member includes a second main body portion extending upward from the box body and a second extending portion extending from the top of the second main body portion toward the rotating structure. In the locked state, the second extending portion is entirely or partially located above the locking plate.

[0013] In one or more embodiments of the present utility model, the junction box further includes a limiting member and a limiting groove. The limiting member includes a third main body portion extending upward from the mounting plate and a third extending portion extending from the top of the third main body portion in a direction away from the box body. The limiting groove is recessed from a side surface of the cover plate close to the rotating structure and penetrates to the lower surface of the cover plate. In the limiting state, the third extending portion is entirely or partially located in the limiting groove.

[0014] In one or more embodiments of the present utility model, a guiding surface is provided on a side of the third extending portion away from the third main body portion, and the guiding surface is inclined downward from the top of the third extending portion.

[0015] On the other hand, the present utility model further provides a photovoltaic module, and the photovoltaic module includes the above-mentioned junction box.

[0016] Compared with the prior art, in the present utility model, the cover plate and the box body are connected through a rotating structure. Rotating the cover plate can open the junction box. After the junction box is opened, the rotating structure can prevent the cover plate from separating from the box body, avoiding the cover plate from falling off and being lost. The locking structure can lock the position of the cover plate when the junction box is in a closed state, preventing the cover plate from rotating and ensuring the tightness of the junction box in the closed state.

[0017] Moreover, due to the rotation structure being provided, the cover plate and the box body can be assembled in advance before the component is installed inside the box body. During the component installation process, the junction box is in an open state, the cover plate does not separate from the box body and does not hinder the normal installation of the component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a three-dimensional structure diagram of the junction box in the open state in Embodiment 1 of the present invention;

[0020] Figure 2 It is Figure 1 a partial enlarged view of part A in

[0021] Figure 3 It is a plan structure diagram of the mounting plate and the rotation structure in Embodiment 1 of the present invention;

[0022] Figure 4 It is a three-dimensional structure diagram of the junction box in the closed state in Embodiment 1 of the present invention;

[0023] Figure 5 It is Figure 4 a partial enlarged view of part B in

[0024] Figure 6 It is an exploded structure diagram of the junction box in Embodiment 1 of the present invention;

[0025] Figure 7 It is a three-dimensional structure diagram of the junction box in the open state in Embodiment 2 of the present invention;

[0026] Figure 8 It is Figure 7 a partial enlarged view of part C in

[0027] Figure 9 It is a plan structure diagram of the mounting plate and the rotation structure in Embodiment 2 of the present invention.

[0028] Description of main reference numerals: 1, box body; 2, cover plate; 3, mounting plate; 4, mounting rod; 5, rotating shaft; 6, first mounting member, 601, first main body portion, 602, first extension portion; 7, second mounting member; 8, first mounting groove; 9, locking member, 901, second main body portion, 902, second extension portion; 10, avoidance groove; 11, locking plate; 12, third mounting member; 13, second mounting groove; 14, limiting member, 1401, third main body portion, 1402, third extension portion, 1403, guiding surface; 15, limiting groove. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "vertical", "horizontal", "top", "bottom", "upper", "lower", "inner", "outer", "axial", "radial", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0031] Embodiment 1:

[0032] Refer to Figures 1 to 4 As shown, the junction box in this embodiment includes a box body 1 and a cover plate 2. Rotating structures and locking structures are respectively provided on the opposite sides of the box body 1 and the cover plate 2.

[0033] Specifically, the rotating structure includes a mounting plate 3 and a mounting rod 4. The mounting plate 3 extends outward from one side of the box body 1, and the mounting rod 4 extends outward from one side of the cover plate 2. A mounting groove perpendicular to the extending direction of the mounting plate 3 is formed on the mounting plate 3, and a rotating shaft 5 perpendicular to the extending direction of the mounting rod 4 is provided on the mounting rod 4. The rotating shaft 5 is rotatably mounted in the mounting groove to enable the cover plate 2 to rotate relative to the box body 1.

[0034] The following further introduces the specific structure of the rotating structure.

[0035] For the convenience of the combination of the rotating shaft 5 and the mounting groove, preferably, refer to Figure 2 and Figure 3As shown, the installation groove in this embodiment is formed above the mounting plate 3.

[0036] The rotation structure in this embodiment includes a first mounting member 6 and a second mounting member 7. The first mounting member 6 and the second mounting member 7 are arranged on the mounting plate 3. The second mounting member 7 is arranged on one side of the first mounting member 6, and the first mounting member 6 extends above the second mounting member 7. An opening is formed between the first mounting member 6 and the second mounting member 7, and the first mounting groove 8 with an opening facing the locking structure is formed.

[0037] Further, referring to Figure 3 As shown, the first mounting member 6 in this embodiment includes a first main body portion 601 extending upward from the mounting plate 3 and a first extension portion 602 extending from the top of the first main body portion 601 toward the box body 1. The lower surface portion of the first extension portion 602 is an arc surface, the second mounting member 7 is located below the first extension portion 602, and the upper surface portion of the second mounting member 7 is an arc surface.

[0038] The arc surface can make the first extension portion 602 and the second mounting member 7 better fit with the rotating shaft 5, reduce the resistance when the rotating shaft 5 rotates in the first mounting groove 8, and also reduce the gap between the first mounting groove 8 and the rotating shaft 5, prevent dislocation between the first mounting groove 8 and the rotating shaft 5, and further prevent dislocation between the cover plate 2 and the box body 1.

[0039] To facilitate the combination and disengagement of the rotating shaft 5 and the first mounting groove 8, the distance between the end of the first extension close to the box body 1 and the end of the second mounting member 7 close to the box body 1 in this embodiment is less than the diameter of the rotating shaft 5. That is, on the radial cross-section of the rotating shaft 5, the opening length of the first mounting groove 8 on the side close to the box body 1 is less than the diameter of the rotating shaft 5. The opening length of the first mounting groove 8 on this side should not be too large or too small, and the proportional relationship between the opening length and the diameter of the rotating shaft 5 can be set according to actual needs.

[0040] To further improve the connection stability of the rotation structure, referring to Figure 2 As shown, two first mounting members 6 and two second mounting members 7 are provided in this embodiment. The two first mounting members 6 are arranged at intervals along the axial direction of the rotating shaft 5, and the two second mounting members 7 are arranged at intervals along the axial direction of the rotating shaft 5 to form two first mounting grooves 8. The two ends of the rotating shaft 5 are respectively installed in the two first mounting grooves 8, and the mounting rod 4 is located between the two first mounting members 6.

[0041] The specific structure of the locking structure will be further introduced below.

[0042] Referring to Figures 3 to 6As shown in the figure, the locking structure in this embodiment includes a locking member 9, an avoidance groove 10, and a locking plate 11. The avoidance groove 10 is provided on the side of the cover plate 2 away from the rotating structure. The locking plate 11 is provided in the avoidance groove 10. The locking member 9 includes a second main body portion 901 extending upward from the box body 1 and a second extension portion 902 extending from the top of the second main body portion 901 toward the rotating structure. In the locked state, a part of the second extension portion 902 is located above the locking plate 11 to prevent the locking plate 11 from moving upward, thereby preventing the cover plate 2 from rotating relative to the box body 1 and enabling the cover plate 2 to stably close the box body 1.

[0043] Embodiment Two:

[0044] Referring to Figures 7 to 9 As shown in the figure, the junction box in this embodiment includes a box body 1 and a cover plate 2. Rotating structures, locking structures, and limiting structures are respectively provided on opposite sides of the box body 1 and the cover plate 2.

[0045] The box body 1, the cover plate 2, and the locking structure in this embodiment are exactly the same as those in Embodiment One, except for the rotating structure. Moreover, a limiting structure is further provided in this embodiment.

[0046] Specifically, referring to Figure 8 and Figure 9 As shown in the figure, the rotating structure in this embodiment includes two third mounting members 12. The two third mounting members 12 are oppositely arranged on the mounting plate 3. An upward-opening second mounting groove 13 is formed by enclosing the two third mounting members 12. The distance between the tops of the two third mounting members 12 is smaller than the diameter of the rotating shaft 5.

[0047] Furthermore, two opposite surfaces of the third mounting member 12 in this embodiment are partially arc-shaped surfaces.

[0048] To further improve the connection stability of the rotating structure, referring to Figure 8 As shown in the figure, the third mounting members 12 are provided in two groups in pairs. The two groups of third mounting members 12 are arranged at intervals along the axial direction of the rotating shaft 5 to form two second mounting grooves 13. Both ends of the rotating shaft 5 are respectively installed in the two second mounting grooves 13, and the mounting rod 4 is located between the two second mounting grooves 13. Alternatively, the third mounting members 12 can also be provided in three groups, four groups, or more groups in pairs. The specific quantity and position thereof can be set according to actual requirements.

[0049] The specific structure of the limiting structure will be further introduced below.

[0050] Referring to Figure 8 and Figure 9As shown in the figure, the limiting structure in this embodiment includes a limiting member 14 and a limiting groove 15. The limiting member 14 includes a third main body portion 1401 extending upward from the mounting plate 3 and a third extension portion 1402 extending away from the box body 1 along the top of the third main body portion 1401. The limiting groove 15 is recessed from the side surface of the cover plate 2 close to the rotating structure and penetrates to the lower surface of the cover plate 2. In the limiting state, a part of the third extension portion 1402 is located in the limiting groove 15.

[0051] According to the above structural design, after the junction box in this embodiment is opened and the cover plate 2 is rotated counterclockwise to the horizontal plane, the third extension portion 1402 and the limiting groove 15 are combined. At this time, the mounting plate 3 restricts the counterclockwise rotation of the cover plate 2, and the third extension portion 1402 restricts the clockwise rotation of the cover plate 2, thereby stabilizing the position of the cover plate 2 in this state and preventing the cover plate 2 from rotating randomly.

[0052] Further, in order to facilitate the combination of the third extension portion 1402 and the limiting groove 15, a guiding surface 1403 is provided on the side of the third extension portion 1402 away from the third main body portion 1401. The guiding surface 1403 is inclined downward from the top of the third extension portion 1402.

[0053] Embodiment Three:

[0054] The photovoltaic module in this embodiment includes the junction box in Embodiment One or Embodiment Two.

[0055] In the above Embodiment One and Embodiment Two, the mounting plate 3 is arranged on the box body 1, and the mounting rod 4 is arranged on the cover plate 2. In other embodiments, the mounting plate 3 can be arranged on the cover plate 2, and the mounting rod 4 can be arranged on the box body 1.

[0056] In the above Embodiment One, a part of the lower surface of the first extension portion 602 is an arc surface, and a part of the upper surface of the second mounting member 7 is an arc surface. In other embodiments, the entire lower surface of the first extension portion 602 can be an arc surface, and the entire upper surface of the second mounting member 7 can be an arc surface.

[0057] In the above Embodiment Two, a part of the two opposite surfaces of the third mounting member 12 is an arc surface. In other embodiments, the two opposite surfaces of the third mounting member 12 can be entirely arc surfaces.

[0058] In the above Embodiment One and Embodiment Two, a part of the second extension portion 902 is located above the locking plate 11 in the locked state. In other embodiments, in the locked state, the second extension portion 902 can be entirely located above the locking plate 11.

[0059] In the above Embodiment Two, a part of the third extension portion 1402 is located in the limiting groove 15 in the limiting state. In other embodiments, in the limiting state, the third extension portion 1402 can be entirely located in the limiting groove 15.

[0060] As can be seen from the above technical solutions, the present utility model has the following beneficial effects:

[0061] In the present utility model, the cover plate and the box body are connected through a rotating structure. Rotating the cover plate can open the junction box, and after the junction box is opened, the rotating structure can prevent the cover plate from separating from the box body, avoiding the cover plate from falling off and getting lost. The locking structure can lock the position of the cover plate when the junction box is in a closed state, preventing the cover plate from rotating and ensuring the tightness of the junction box in the closed state.

[0062] Moreover, due to the provision of the rotating structure, before installing the components inside the box body, the cover plate and the box body can be pre-assembled. During the installation process of the components, the junction box is in an open state, the cover plate does not separate from the box body and does not hinder the normal installation of the components.

[0063] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.

[0064] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A junction box, characterized in that: It includes a box body and a cover plate, and a rotating structure and a locking structure are respectively provided on opposite sides of the box body and the cover plate, wherein the rotating structure includes a mounting plate extending outward from one of the box body and the cover plate and a mounting rod extending outward from the other of the box body and the cover plate, a mounting groove perpendicular to the extending direction of the mounting plate is formed on the mounting plate, and a rotating shaft perpendicular to the extending direction of the mounting rod is provided on the mounting rod, and the rotating shaft is rotatably installed in the mounting groove.

2. The junction box according to claim 1, characterized in that: The mounting plate extends outward from one side of the box body, the mounting groove is formed above the mounting plate, and the mounting rod extends outward from one side of the cover plate.

3. The junction box according to claim 2, characterized in that: The mounting plate is provided with a first mounting member and a second mounting member disposed beside the first mounting member, the first mounting member extends above the second mounting member, and the first mounting member and the second mounting member surround a first mounting groove having an opening facing the locking structure.

4. The junction box according to claim 3, characterized in that: The first mounting member includes a first main body portion extending upward from the mounting plate and a first extension portion extending from the top of the first main body portion toward the box body, the lower surface of the first extension portion is entirely or partially an arc surface, the second mounting member is located below the first extension portion, the upper surface of the second mounting member is entirely or partially an arc surface, and the distance between one end of the first extension close to the box body and one end of the second mounting member close to the box body is less than the diameter of the rotating shaft.

5. The junction box according to claim 2, characterized in that: The mounting plate is provided with two third mounting members which are arranged opposite to each other. The two third mounting members surround a second mounting groove which opens upward. The distance between the tops of the two third mounting members is smaller than the diameter of the rotating shaft.

6. The junction box according to claim 5, characterized in that: The two opposite surfaces of the third mounting member are all or partly arc surfaces.

7. The junction box according to claim 2, characterized in that: The locking structure includes a locking member, an avoidance groove and a locking plate. The avoidance groove is arranged on a side of the cover plate away from the rotating structure. The locking plate is arranged in the avoidance groove. The locking member includes a second main body extending upward from the box body and a second extension portion extending from the top of the second main body portion toward the rotating structure. In the locked state, the second extension portion is entirely or partially located above the locking plate.

8. The junction box according to claim 2, characterized in that: The junction box also includes a limiting member and a limiting groove, the limiting member includes a third main body portion extending upward from the mounting plate and a third extension portion extending from the top of the third main body portion in a direction away from the box body, the limiting groove is formed by a side depression of the cover plate close to the rotating structure, and the limiting groove extends to the lower surface of the cover plate, and in the limited state, the third extension portion is entirely or partially located in the limiting groove.

9. The junction box according to claim 8, characterized in that: A guide surface is disposed on a side of the third extension portion away from the third main body portion. The guide surface is inclined downward from the top of the third extension portion.

10. A photovoltaic module, characterized in that: The method comprises a junction box as claimed in any one of claims 1 to 9.

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