High-sealing photovoltaic junction box and assembly thereof

Abstract

The high-sealing photovoltaic junction box comprises a box body, the box body comprises a bottom wall and side walls connected with the periphery of the bottom wall, and the bottom wall and the side walls form an accommodating cavity with an opening; at least one partition plate which is annularly distributed is arranged in the containing cavity, the partition plate is configured to divide the containing cavity into a first containing cavity and at least one second containing cavity, the first containing cavity is located in the middle of the containing cavity, and the second containing cavity surrounds the first containing cavity; a supporting assembly is arranged in the first accommodating cavity, the supporting assembly is configured to be provided with electrical elements, and the surface, used for arranging the electrical elements, of the supporting assembly is higher than the bottom of the first accommodating cavity; sealant is arranged in the first accommodating cavity and the second accommodating cavity; the high-sealing photovoltaic junction box further comprises a box cover connected with the box body in a matched mode, and the box cover is connected with the opening of the containing cavity in a sealed mode. The photovoltaic junction box provided by the utility model has high sealing performance, can adapt to an offshore high-humidity environment, and ensures electrical safety.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaics, in particular to a highly sealed photovoltaic junction box and components thereof. Background Art

[0002] A photovoltaic junction box is a component specifically designed for use in solar photovoltaic (PV) power generation systems. It plays a critical role in connecting and protecting electrical components. It is responsible for transmitting the electricity generated by the solar panels to other components of the system, such as the inverter or battery, ensuring that the current can be efficiently drawn from the PV array and put into use. The PV junction box must have excellent sealing and insulation properties to protect the internal circuitry from external environmental factors such as rain, dust, and extreme temperatures.

[0003] Offshore photovoltaic junction boxes are designed specifically for offshore photovoltaic power generation systems. Compared to onshore junction boxes, they face more demanding operating environments, including challenges such as high salt spray corrosion, high humidity, wind and wave impact, and strong ultraviolet radiation. Therefore, these junction boxes must be designed and manufactured with a higher level of sealing and insulation to ensure a complete seal inside, prevent moisture penetration, and adapt to the high humidity environment at sea, ensuring electrical safety.

[0004] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the present utility model. It does not necessarily belong to the prior art of the present application, nor does it necessarily provide technical guidance. In the absence of clear evidence that the above content has been disclosed before the filing date of the present application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Utility Model Content

[0005] The purpose of the utility model is to provide a highly sealed photovoltaic junction box and components thereof, which have high sealing performance, can adapt to the high humidity environment at sea, and ensure electrical safety.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is as follows:

[0007] A highly sealed photovoltaic junction box comprises a box body, wherein the box body comprises a bottom wall and side walls connected to the bottom wall, wherein the bottom wall and the side walls form a receiving cavity with an opening;

[0008] At least one annular partition is provided in the accommodating cavity, and the partition is configured to separate the accommodating cavity into a first accommodating cavity and at least one second accommodating cavity, wherein the first accommodating cavity is located in the middle of the accommodating cavity, and the second accommodating cavity surrounds the first accommodating cavity;

[0009] A support assembly is provided in the first accommodating cavity, the support assembly is configured to accommodate an electrical component, and a surface of the support assembly for arranging the electrical component is higher than the bottom of the first accommodating cavity;

[0010] The first accommodating cavity and the second accommodating cavity may be provided with sealant, or may not be provided with sealant;

[0011] The highly sealed photovoltaic junction box further comprises a box cover cooperatively connected to the box body, and the box cover is sealedly connected to the opening of the accommodating cavity.

[0012] Further, based on any one of the above technical solutions or a combination of multiple technical solutions, the partition includes a first partition and a second partition connected to each other, the first partition and the second partition are both distributed in an annular shape, and the first partition is arranged on the outside of the second partition;

[0013] The first partition extends toward the middle of the box body, and the second partition extends toward the opening of the accommodating cavity.

[0014] Further, based on any one of the above technical solutions or a combination of multiple technical solutions, the extension direction of the first partition is the same as the extension direction of the bottom wall of the box body; and / or,

[0015] An extending direction of the second partition is the same as an extending direction of the side wall.

[0016] Further, based on any one of the above technical solutions or a combination of multiple technical solutions, the first partition extends horizontally toward the interior of the accommodating cavity; and / or,

[0017] The second partition extends vertically toward the opening of the accommodating cavity.

[0018] Furthermore, based on any one of the above technical solutions or a combination of multiple technical solutions, the extension direction of the first partition is at a certain angle to the horizontal direction, and the height of the connecting end of the first partition and the second partition is higher than the height of the other end of the first partition; and / or,

[0019] An extension direction of the second partition forms a certain angle with the vertical direction.

[0020] Further, based on any one of the above technical solutions or a combination of multiple technical solutions, the number of the partitions is , one end of the first partition is connected to the side wall, and the other end of the first partition is connected to the lower end of the second partition;

[0021] The upper surface of the first partition is located at a height higher than the upper surface of the bottom wall.

[0022] Further, based on any one of the above technical solutions or a combination of multiple technical solutions, there are multiple partitions, and one end of the first partition close to the side wall is connected to the side wall, and the other end is connected to the lower end of the second partition;

[0023] Any two adjacent partitions, wherein one end of the first partition among the partitions away from the side wall is connected to the second partition among the partitions close to the side wall, and the upper surface of the first partition among the partitions away from the side wall is at a height higher than the upper surface of the first partition among the partitions close to the side wall.

[0024] Furthermore, based on any one of the above technical solutions or a combination of multiple technical solutions, the outer side surface of the second partition is provided with multiple reinforcing ribs; and / or,

[0025] The height of the upper end of the second partition is not higher than the height of the upper end of the side wall; and / or,

[0026] The box body is an integrally formed structure.

[0027] Further, based on any one of the above technical solutions or a combination of multiple technical solutions, the bottom wall is provided with one or more first busbar through-holes, a trumpet-shaped guide portion is provided between the outer surface of the bottom wall and the first busbar through-holes, and the upper surface of the guide portion is configured as a support surface for the electrical component; and / or,

[0028] The bottom wall includes a plurality of support platforms and positioning columns protruding inwardly, and the support platforms and positioning columns are configured as the support assembly; and / or,

[0029] The bottom of the box body is provided with a recessed portion recessed inwardly; and / or,

[0030] The bottom of the box body is provided with a recessed portion which is recessed inwards thereof, and the recessed portion is filled with sealant.

[0031] Further, based on any one of the above technical solutions or a combination of multiple technical solutions, the side of the box body is provided with an outwardly extending extension portion, and the extension portion is provided with a threading hole;

[0032] The cable passes through the threading hole and is electrically connected to the electrical components in the box body;

[0033] The outer wall of the extension portion is provided with a thread, the cable is provided with a nut, a plug and an inner claw, and the nut is threadedly connected to the outer wall of the extension portion;

[0034] The plug and the inner claw are arranged in the wire threading hole, and the inner claw is locked with the cable under the circumferential pressure of the nut.

[0035] According to another aspect of the present invention, a photovoltaic junction box assembly is provided, comprising at least two high-seal photovoltaic junction boxes as described in any one of the above technical solutions or a combination of multiple technical solutions; the multiple high-seal photovoltaic junction boxes are mechanically and / or electrically connected.

[0036] The beneficial effects brought about by the technical solution provided by the utility model are as follows:

[0037] a. The present invention provides a partition within the housing cavity of the box body, dividing the housing cavity into a first housing cavity in the middle region and a second housing cavity in the surrounding region. A support assembly protruding in an upward opening direction is provided in the first housing cavity for accommodating electrical components. This allows the upper and lower surfaces and surrounding areas of the electrical components to be fully in contact with the sealant when the box body is filled with sealant, thereby improving its density. Furthermore, the distance between water vapor and the electrical components is increased. Furthermore, the support assembly protruding from the bottom of the first housing cavity makes it more difficult for water vapor to creep into the electrical components, further improving its sealing performance.

[0038] b. The present invention increases the distance for water vapor to reach the electrical components and also increases the difficulty for water vapor to enter the electrical components by setting the connection end of the first and second partitions at a higher height than the other end of the first partition 31. Therefore, the sealing performance of the photovoltaic junction box can be further improved.

[0039] c. The utility model provides a trumpet-shaped guide portion that is inclined and protrudes into the box at the location of the first busbar perforation. On the one hand, it can be used to guide the busbar to pass through the first busbar perforation. On the other hand, the upper surface of the guide portion is configured as a support surface for the electrical component, which can achieve the purpose of the upper surface of the supporting component being higher than the bottom of the first accommodating cavity with less material and a compact structure, and well takes into account the convenience of use of the junction box and the reduction of production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A schematic top view from a first angle of a photovoltaic junction box body provided by an exemplary embodiment of the present invention;

[0042] Figure 2 for Figure 1A cross-sectional view shown in the AA direction;

[0043] Figure 3 A schematic top view from a second angle of a photovoltaic junction box body provided by an exemplary embodiment of the present invention;

[0044] Figure 4 for Figure 3 A cross-sectional view shown in the direction BB;

[0045] Figure 5 A three-dimensional schematic diagram of a photovoltaic junction box body provided by an exemplary embodiment of the present invention;

[0046] Figure 6 A schematic cross-sectional view of a box body of a photovoltaic junction box with a first partition arranged obliquely, provided by an exemplary embodiment of the present invention;

[0047] Figure 7 The present invention is a perspective schematic diagram of a photovoltaic junction box assembly provided by an exemplary embodiment of the present invention.

[0048] Among them, the figure marks include: 1-box body, 11-bottom wall, 111-support platform, 112-positioning column, 113-glue leakage hole, 114-first bus belt perforation, 115-guide part, 116-recessed part, 12-side wall, 121-threading hole, 122-extension part, 1221-nut, 1222-plug, 1223-inner claw, 1224-card platform, 2-box cover, 3-partition, 31-first partition, 32-second partition, 321-reinforcement rib, 4-accommodating chamber, 41-first accommodating chamber, 42-second accommodating chamber, 5-electrical component, 51-second bus belt perforation, 6-cable. DETAILED DESCRIPTION

[0049] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0051] In one embodiment of the present invention, a high-sealing photovoltaic junction box is provided. Figures 1 to 6 The photovoltaic junction box includes a box body 1, the box body 1 includes a bottom wall 11 and side walls 12 connected to the bottom wall, the bottom wall 11 and the side walls 12 form a receiving cavity 4 with an opening;

[0052] At least one annular partition 3 is provided in the accommodating chamber, and the partition 3 is configured to separate the accommodating chamber 4 into a first accommodating chamber 41 and at least one second accommodating chamber 42. The first accommodating chamber 41 is located in the middle of the accommodating chamber 4, and the second accommodating chamber 42 surrounds the first accommodating chamber 41.

[0053] A support assembly is provided in the first accommodating cavity 41. The support assembly is configured to accommodate the electrical component 5. The surface of the support assembly for accommodating the electrical component 5 is higher than the bottom of the first accommodating cavity 41. Sealant is provided in the first accommodating cavity 41 and the second accommodating cavity 42.

[0054] The highly sealed photovoltaic junction box further includes a box cover 2 that is cooperatively connected to the box body 1 , and the box cover 2 is sealedly connected to the opening of the accommodating cavity 4 .

[0055] Preferably, a space for the potting glue to flow is provided below the support assembly. More preferably, the surface of the support assembly for arranging the electrical component 5 is also higher than the bottom of the second accommodating cavity 42.

[0056] The photovoltaic junction box provided in this embodiment is provided with a first accommodating cavity 41 in the middle area of the box body and a second accommodating cavity 42 in the surrounding area, and a support assembly protruding in an upward opening direction is provided in the first accommodating cavity 41 for placing the electrical component 5; on the one hand, the upper and lower surfaces and the surrounding areas of the electrical component 5 can fully contact with the potting glue, and when water vapor enters the junction box, the water vapor will spread along the side wall 12 to the second accommodating cavity 42, and then spread along the partition 3 to the first accommodating cavity 41, which not only increases the contact distance between the water vapor and the electrical component 5, but also the protrusion of the support assembly in the first accommodating cavity 41 increases the difficulty of water vapor crawling toward the electrical component 5.

[0057] In one embodiment of the present invention, see Figures 1 to 5 The partition 3 includes a first partition 31 and a second partition 32 connected to each other. The first partition 31 and the second partition 32 are both arranged in an annular shape, and the first partition 31 is arranged on the outside of the second partition 32. The first partition 31 extends toward the middle of the box body 1, and the second partition 32 extends toward the opening of the accommodating chamber 4.

[0058] Preferably, the extending direction of the first partition 31 is the same as the extending direction of the bottom wall 11 of the box body 1; the extending direction of the second partition 32 is the same as the extending direction of the side wall 12. Figure 2 As shown, the bottom wall 11 is arranged in the horizontal direction, and the first partition 31 extends horizontally toward the interior of the accommodating cavity 4. The side wall 12 is arranged in the vertical direction, and the second partition 32 extends vertically toward the opening of the accommodating cavity 4.

[0059] In this embodiment, there is one partition 3. One end of the first partition 31 is connected to the side wall 12, and the other end of the first partition 31 is connected to the lower end of the second partition 32. Preferably, the upper surface of the first partition 31 is at a higher height than the upper surface of the bottom wall 11. This can reduce mold and production costs for the junction box, as well as the amount of glue required for subsequent filling. The mounting surface of the support assembly for the electrical component 5 is at a higher height than the upper surface of the first partition 31.

[0060] The support assembly includes a plurality of support platforms 111 and a plurality of positioning posts 112 disposed on the bottom wall 11. The support platforms 111 and positioning posts 112 extend toward the opening of the cavity 4. The electrical components 5 (including a circuit board and electronic components disposed thereon) are disposed on the support platforms 111 and are fixed in place by the positioning posts 112.

[0061] See also Figure 2 、 Figure 4 and Figure 5, the bottom of the box body 1 is provided with a recessed portion 116 recessed toward its interior. Specifically, at least the portion of the bottom wall 11 of the box body 1 relative to the first accommodating cavity 41 is recessed toward the opening direction of the accommodating cavity 4. In addition, one or more first busbar perforations 114 are provided in the middle portion of the bottom wall 11, and a trumpet-shaped guide portion 115 is provided between the outer surface of the bottom wall 11 and the first busbar perforations 114. The upper end surface of the guide portion 115 is the upper surface of the support platform 111. The busbar passes through the first busbar perforations 114 and then through the second busbar perforations 51 on the electrical component 5 and is electrically connected to the corresponding electrical component. The recessed portion 116 and the guide portion 115 can perform local thinning on the bottom wall 11, so as to achieve the upper surface of the support platform 111 being higher than the bottom surface of the first accommodating cavity 41 with less material and a compact structure.

[0062] In order to improve the structural strength of the box body 1, a plurality of reinforcing ribs 321 are provided on the outer side of the second partition 32. Preferably, the box body 1 is an integrally formed structure made by injection molding.

[0063] In addition, in this embodiment, the height of the upper end of the second partition 32 is not higher than the height of the upper end of the side wall 12, so that the box body 1 can be connected with the box cover 2 with a planar structure.

[0064] The recessed portion 116 is filled with sealant, and the bottom wall 11 of the box body 1 has flanges protruding outwards on all sides. The recessed portion 116 can increase the filling amount of sealant at the corresponding position of the electrical component 5, and can further improve the sealing of the photovoltaic junction box.

[0065] The side of the box body 1 is further provided with an outwardly extending extension portion 122 and a wire threading hole 121. The wire threading hole 121 passes through the extension portion 122 to connect the inside and outside of the box body 1. The cable 6 passes through the wire threading hole 121 to be electrically connected to the electrical component 5 in the box body.

[0066] The outer surface of the extension portion 122 is provided with a threaded structure, and a clamping plate 1224 is provided at the intersection of the extension portion 122 and the side wall 12. A nut 1221, a plug 1222, and an inner claw 1223 are sleeved on the cable 6. The nut 1221 is threadedly connected to the extension portion 122. The inner claw 1223 and the plug 1222 are arranged inside the extension portion 122, that is, inside the threading hole 121. The outer wall of the plug 1222 is matingly connected to the inner wall of the extension portion 122, and the inner wall of the plug 1222 wraps around the cable 6. The inner claw 1223 is clamped between the plug 1222 and the nut 1221. When the nut 1221 is tightened, the connection between the inner claw 1223 and the cable 6 will become tighter and tighter until the nut 1221 is rotated to the clamping platform 1224. The nut 1221 cooperates with the clamping platform 1224 to complete the fixation of the cable 6 and the box body 1.

[0067] The photovoltaic junction box can be a split junction box installed on a solar cell panel. One or more glue leakage holes 113 are provided on the bottom wall 11 of the box body 1. The box body 1 is filled with sealant. The sealant passes through the glue leakage holes 113 to fully wrap the electrical components 5 and the parts of the cables 6 located in the box body 1 and the threading holes 121.

[0068] In another embodiment of the present invention, the difference from the above embodiment lies in the extension direction of the first partition 31 and / or the second partition 32. In this embodiment, Figure 6 As shown, the extension direction of the first partition 31 is at a certain angle to the horizontal direction, and the height of the connection end of the first partition 31 and the second partition 32 is higher than the height of the other end of the first partition 31. More preferably, the extension direction of the second partition 31 is at a certain angle to the vertical direction. In this embodiment, on the one hand, it can further increase the distance that water vapor can climb to the electrical components. On the other hand, the height of the connection end of the first partition 31 and the second partition 32 is higher than the height of the other end of the first partition 31, which can also increase the difficulty of water vapor climbing into the electrical components. Therefore, the sealing performance of the photovoltaic junction box can be further improved.

[0069] Another embodiment of the present invention differs from the above embodiment in the number of partitions 3. In this embodiment, multiple partitions 3 are provided, and the multiple annular partitions 3 are nested and connected in sequence. The first partition 31 closest to the side wall 12 has one end connected to the side wall 12 and the other end connected to the lower end of the second partition 32.

[0070] For any two adjacent partitions 3, one end of the first partition 31 in the partition 3 away from the side wall 12 is connected to the second partition 32 in the partition 3 close to the side wall 12. The upper surface of the first partition 31 in the partition 3 away from the side wall 12 is at a higher height than the upper surface of the first partition 31 in the partition 3 close to the side wall 12.

[0071] Another preferred arrangement is that, for any two adjacent partitions 3, one end of the first partition 31 in the partition 3 away from the side wall 12 is connected to the second partition 32 in the partition 3 close to the side wall 12. The upper surface of the first partition 31 in the partition 3 away from the side wall 12 is at a higher height than the upper surface of the first partition 31 in the partition 3 close to the side wall 12.

[0072] In one embodiment of the present invention, a photovoltaic junction box assembly is provided, such as Figure 7 As shown, it includes at least two high-sealing photovoltaic junction boxes as described above; multiple high-sealing photovoltaic junction boxes are mechanically and / or electrically connected, and are specifically arranged according to usage requirements.

[0073] It should be noted that the above photovoltaic junction box assembly embodiment and the high-sealing photovoltaic junction box embodiment are based on the same inventive concept, and all the contents of the high-sealing photovoltaic junction box embodiment are incorporated into the photovoltaic junction box assembly embodiment by reference.

[0074] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0075] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A highly sealed photovoltaic junction box, characterized in that: The box body (1) comprises a bottom wall (11) and side walls (12) connected to the bottom wall, wherein the bottom wall (11) and the side walls (12) form a receiving cavity (4) with an opening. At least one annular partition (3) is provided in the accommodating chamber, and the partition (3) is configured to separate the accommodating chamber (4) into a first accommodating chamber (41) and at least one second accommodating chamber (42), wherein the first accommodating chamber (41) is located in the middle of the accommodating chamber (4), and the second accommodating chamber (42) surrounds the first accommodating chamber (41); A support assembly is provided in the first accommodating cavity (41), the support assembly being configured to accommodate an electrical component (5), and a surface of the support assembly for arranging the electrical component (5) is higher than the bottom of the first accommodating cavity (41); The highly sealed photovoltaic junction box further comprises a box cover (2) cooperatively connected to the box body (1), and the box cover (2) is sealedly connected to the opening of the accommodating cavity (4).

2. The high-seal photovoltaic junction box according to claim 1, characterized in that: The partition (3) comprises a first partition (31) and a second partition (32) connected to each other, the first partition (31) and the second partition (32) are both distributed in an annular shape, and the first partition (31) is arranged on the outside of the second partition (32); The first partition (31) extends toward the middle of the box body (1), and the second partition (32) extends toward the opening of the accommodating cavity (4).

3. The high-seal photovoltaic junction box according to claim 2, characterized in that: The extending direction of the first partition (31) is the same as the extending direction of the bottom wall (11) of the box body (1); and / or, The extension direction of the second partition (32) is the same as the extension direction of the side wall (12).

4. The high-seal photovoltaic junction box according to claim 2, characterized in that: The first partition (31) extends horizontally toward the interior of the accommodating cavity (4); and / or, The second partition (32) extends vertically toward the opening of the accommodating cavity (4).

5. The high-seal photovoltaic junction box according to claim 2, characterized in that: The extension direction of the first partition (31) is at a certain angle to the horizontal direction, and the height of the connection end of the first partition (31) and the second partition (32) is higher than the height of the other end of the first partition (31); and / or, The extension direction of the second partition (32) forms a certain angle with the vertical direction.

6. The high-seal photovoltaic junction box according to claim 2, characterized in that: The number of the partition (3) is one, one end of the first partition (31) is connected to the side wall (12), and the other end of the first partition (31) is connected to the lower end of the second partition (32).

7. The high-seal photovoltaic junction box according to claim 2, characterized in that: There are multiple partitions (3), and one end of the first partition (31) close to the side wall (12) is connected to the side wall (12), and the other end is connected to the lower end of the second partition (32); Any two adjacent partitions (3), wherein one end of the first partition (31) in the partition (3) away from the side wall (12) is connected to the second partition (32) in the partition (3) close to the side wall (12).

8. The high-seal photovoltaic junction box according to claim 2, characterized in that: The outer side surface of the second partition (32) is provided with a plurality of reinforcing ribs (321); and / or, The height of the upper end of the second partition (32) is not higher than the height of the upper end of the side wall (12); and / or, The box body (1) is an integrally formed structure.

9. The high-seal photovoltaic junction box according to claim 1, characterized in that: One or more first busbar through-holes (114) are provided on the bottom wall (11), a trumpet-shaped guide portion (115) is provided between the outer surface of the bottom wall (11) and the first busbar through-holes (114), and the upper surface of the guide portion (115) is configured to support the electrical component (5); and / or, The bottom wall (11) includes a plurality of inwardly protruding support platforms (111) and positioning columns (112), and the support platforms (111) and positioning columns (112) are configured as the support assembly; and / or, The bottom of the box body (1) is provided with a recessed portion (116) recessed inwardly thereof; and / or, The bottom of the box body (1) is provided with a recessed portion (116) recessed inwardly thereof, and the recessed portion (116) is filled with sealant.

10. A photovoltaic junction box assembly, characterized in that: The invention comprises at least two high-seal photovoltaic junction boxes according to any one of claims 1 to 9; the plurality of high-seal photovoltaic junction boxes are mechanically and / or electrically connected.

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