CN216751679U

CN216751679U - Junction box body for photovoltaic device

Info

Publication number: CN216751679U
Application number: CN202123272873.2U
Authority: CN
Inventors: 喻志雄
Original assignee: Wuhan Sanye Power Engineering Co ltd
Current assignee: Wuhan Sanye Power Engineering Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-06-14
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a junction box body for a photovoltaic device, which comprises a junction box shell, wherein the outer wall of one side of the junction box shell is provided with two screw interfaces, the two screw interfaces are both connected with a transmission cable with a screw joint, the lower end surface of the junction box shell is extended and provided with a cable fixing plate, the upper side of the cable fixing plate can be detachably connected with a cable clamping piece, the cable clamping piece simultaneously fixes two transmission cables, and the cable fixing plate is fixedly connected with the photovoltaic device; the utility model discloses set up cable fixed plate on one side of the terminal box casing, set up cable card firmware at the cable fixed plate upside to the transmission cable that will be connected with the terminal box casing is pressed from both sides tightly, thereby reduces the tensioning force of the transmission cable of screwed joint department, avoids not hard up, drops, contact failure.

Description

Junction box body for photovoltaic device

Technical Field

The utility model relates to photovoltaic power generation device field, concretely relates to a junction box body for photovoltaic device.

Background

Photovoltaic panel assemblies are power generation devices that produce direct current electricity when exposed to the sun, and consist of thin solid photovoltaic cells made almost entirely of semiconductor material (e.g., silicon), which can be operated for long periods of time without any loss due to the absence of moving parts, simple photovoltaic cells that can provide energy for watches and calculators, more complex photovoltaic systems that can provide lighting for houses and power grids, photovoltaic panel assemblies that can be shaped and connected to produce more electricity, photovoltaic panel assemblies that can be used on ceilings and building surfaces, and even as part of windows, skylights or shelters, and are commonly referred to as photovoltaic systems attached to buildings.

The photovoltaic junction box is one of important components of a photovoltaic module, mainly used for connecting electric power generated by a solar cell with an external circuit, and generally comprises a box body, a cable and a connector.

Chinese utility model with application number CN201620657035.7 discloses a photovoltaic power generation system and photovoltaic terminal box exclusively in 2016, 11, 23 days, including a plurality of solar cells, photovoltaic terminal box and the busbar of connecting solar cell and photovoltaic terminal box, the busbar is provided with the busbar leading-in end that extends into in the photovoltaic terminal box, and the photovoltaic terminal box includes: the shell comprises a box body and a box cover, and an accommodating cavity is formed between the box body and the box cover; the conducting plate is arranged in the accommodating cavity and is electrically connected with the bus bar; the bypass diode is arranged in the accommodating cavity and is electrically connected with the two adjacent conducting strips; the transmission cable is electrically connected with the bus bar; the photoresistor is electrically connected between the bus bar lead-in end and the transmission cable.

The Chinese utility model with application number CN202121395851.2, specially adapted to No. 12/07/2021, discloses a split type photovoltaic junction box, which comprises a photovoltaic junction box body and a mounting plate for mounting the photovoltaic junction box body, wherein the side surface of the mounting plate is connected with a plurality of flat head screws for connecting with mounting points, the side surface of the mounting plate is provided with a supporting plate for supporting the photovoltaic junction box body, the two side surfaces of the supporting plate are provided with heat dissipation components for assisting the photovoltaic junction box body to dissipate heat, and the top end of each heat dissipation component is movably provided with a fixing component for fixing the photovoltaic junction box body; the photovoltaic junction box comprises a photovoltaic junction box body and is characterized in that a first clamping plate is arranged on the side face of the photovoltaic junction box body, a second clamping plate matched with the first clamping plate is arranged on the side face of the mounting plate, and the first clamping plate and the second clamping plate are connected in a clamping mode.

The transmission cable and the terminal box of two above patent schemes are connected for passing through cable joint, have the tension between cable conductor and the cable joint, and current conventional way establishes the cable clamp in addition on photovoltaic device, through the fixed cable conductor of cable clamp, nevertheless need punch the installation clamp specially, and the operation is comparatively loaded down with trivial details, convenient and fast inadequately.

Disclosure of Invention

The utility model aims at the problem that prior art exists, provide a junction box body for photovoltaic device, set up the cable fixed plate on one side of the terminal box casing, set up the cable card firmware at the cable fixed plate upside to the transmission cable that will be connected with the terminal box casing is pressed from both sides tightly, thereby reduces the tensioning force of the transmission cable of screwed joint department, avoids becoming flexible, drops, contact failure.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a junction box body for photovoltaic device, includes the terminal box casing, the outer wall of one side of terminal box casing is equipped with two hickey, two hickey all connects a transmission cable that has screwed joint, the lower terminal surface of terminal box casing extends and is equipped with the cable fixed plate, the upside of cable fixed plate can be dismantled and connect cable card firmware, two are fixed simultaneously to the cable card firmware the transmission cable to will the cable fixed plate with photovoltaic device fixed connection.

This scheme makes transmission cable pass through screwed joint and be connected for dismantling with the terminal box casing, makes things convenient for pulling out of transmission cable to insert and maintain the terminal box.

Set up the cable fixed plate on one side of terminal box casing, set up the cable card firmware at the cable fixed plate upside to the transmission cable that will be connected with the terminal box casing is tight, thereby reduces the tension of transmission cable of screwed joint department, avoids becoming flexible, drops, contact failure.

Further, the cable clamping and fixing piece comprises a shell cover, mounting lugs with first through holes are arranged on two sides of the shell cover, and a second through hole aligned with the first through hole is formed in the cable fixing plate. When the outer cover is fixed with the cable fixing plate, the cable fixing plate is also fixedly connected with the photovoltaic device, and the installation process is simplified.

Furthermore, the outer housing cover is of a rectangular frame structure with openings on two sides, two inner housing covers are arranged inside the outer housing cover, openings are arranged on two sides of each inner housing cover, and a cable clamping mechanism is arranged inside each inner housing cover. The transmission cable penetrates through the inner shell cover, and the cable clamping mechanism is used for clamping the transmission cable, so that the transmission cable is convenient to fix.

Furthermore, the cable clamping mechanism comprises a block and a pressing plate, the transmission cable is located between the block and the pressing plate, and the block is abutted to the upper end face of the cable fixing plate. Through changing different bed hedgehopping pieces, make transmission cable and hickey be the parallel and level, reduce the tension that brings because the difference in height.

Furthermore, two bolt holes are formed in the upper side of the outer shell cover and are connected with adjusting bolts, the lower ends of the adjusting bolts are connected with the abutting plate, and the abutting plate is connected with the upper side of the pressing plate. The transmission cable is pressed downwards by the pressing plate through screwing the adjusting bolt.

Furthermore, the lower side of the pressing plate and the upper side of the block-up block are provided with arched surfaces which are used for contacting with the transmission cable, and anti-skid rubber pads are attached to the arched surfaces. The arched surface and the anti-skidding rubber pad are used for increasing the contact area, increasing the friction force, and preventing looseness and skidding.

Further, the two screw interfaces are at the same height.

Furthermore, the periphery of the junction box shell is provided with a mounting plate used for being connected with the photovoltaic device.

When the device is installed, the heightening block is placed on the cable fixing plate, the transmission cable is placed on the heightening block, the outer shell cover is sleeved on the two transmission cables, the adjusting bolt drives the pressing plate to be located at the uppermost position, the transmission cable is located between the pressing plate and the heightening block, the outer shell cover and the cable fixing plate are fastened through the bolt, the adjusting bolt is screwed in, and the transmission cable is fixed.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the transmission cable is detachably connected with the junction box shell through the threaded connector, so that the transmission cable is convenient to pull out and insert and the junction box is convenient to maintain;

2. a cable fixing plate is arranged on one side of the junction box shell, and a cable clamping piece is arranged on the upper side of the cable fixing plate, so that a transmission cable connected with the junction box shell is clamped tightly, the tensioning force of the transmission cable at a threaded joint is reduced, and looseness, falling off and poor contact are avoided;

3. set up the bed hedgehopping piece, make transmission cable and hickey be the parallel and level, reduce the tensioning force because difference in height brings.

Drawings

Fig. 1 is a schematic structural view of a junction box body for a photovoltaic device according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

in the figure: 1. a junction box housing; 2. a threaded interface; 3. a threaded joint; 4. a transmission cable; 5. a cable fixing plate; 6. a cable clamp; 7. a housing cover; 8. mounting lugs; 9. an inner housing shell; 10. a block for raising; 11. pressing a plate; 12. bolt holes; 13. adjusting the bolt; 14. and a support plate.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "horizontal", "vertical", and the like indicate orientations or positional relationships that are all based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 2, a junction box body for a photovoltaic device includes a junction box housing 1, two screw interfaces 2 are disposed on an outer wall of one side of the junction box housing 1, the two screw interfaces 2 are both connected to a transmission cable 4 having a screw joint 3, a cable fixing plate 5 is extended from a lower end surface of the junction box housing 1, a cable fixing member 6 is detachably connected to an upper side of the cable fixing plate 5, the cable fixing member 6 fixes the two transmission cables 4 at the same time, and the cable fixing plate 5 is fixedly connected to the photovoltaic device.

This scheme makes transmission cable 4 be connected for dismantling through screwed joint 3 and terminal box casing 1, makes things convenient for pulling out of transmission cable 4 to insert and maintain the terminal box.

Set up cable fixed plate 5 in terminal box casing 1 one side, set up cable card firmware 6 at cable fixed plate 5 upside to the transmission cable 4 that will be connected with terminal box casing 1 presss from both sides tightly, thereby reduces the tension of transmission cable 4 of screwed joint 3 department, avoids becoming flexible, drops, contact failure.

Further, the cable clamping member 6 includes a housing cover 7, mounting lugs 8 having first through holes are disposed on two sides of the housing cover 7, and the cable fixing plate 5 has second through holes aligned with the first through holes. When the outer housing cover 7 is fixed with the cable fixing plate 5, the cable fixing plate 5 is also fixedly connected with the photovoltaic device, and the installation process is simplified.

Further, the outer housing cover 7 is a rectangular frame structure with openings on two sides, two inner housing covers 9 are arranged inside the outer housing cover 7, openings are arranged on two sides of the inner housing covers 9, and a cable clamping mechanism is arranged inside the inner housing covers 9. The transmission cable 4 passes through the inner housing cover 9, and the cable clamping mechanism is used for clamping the transmission cable 4, so that the transmission cable is convenient to fix.

Further, the cable clamping mechanism comprises a block 10 and a pressing plate 11, the transmission cable 4 is located between the block 10 and the pressing plate 11, and the block 10 is abutted to the upper end face of the cable fixing plate 5. Through changing different bed hedgehopping piece 10, make transmission cable 4 and hickey 2 be the parallel and level, reduce the tension that brings because the difference in height.

Furthermore, two bolt holes 12 are formed in the upper side of the outer shell cover 7, the bolt holes 12 are connected with adjusting bolts 13, the lower ends of the adjusting bolts 13 are connected with abutting plates 14, and the abutting plates 14 are connected with the upper side of the pressing plate 11. The pressure plate 11 is pressed down against the transmission cable 4 by screwing in the adjusting bolt 13.

Further, the lower side of the pressing plate 11 and the upper side of the block-up block 10 are both provided with an arch surface for contacting with the transmission cable 4, and the arch surface is attached with an anti-skid rubber pad. The arch surface and the anti-skidding rubber pad are used for increasing the contact area, increasing the friction force, and preventing looseness and skidding.

Further, the two screw interfaces 2 are at the same height.

Furthermore, a mounting plate for connecting the photovoltaic device is arranged on the periphery of the junction box housing 1.

When the device is installed, the heightening block 10 is firstly placed on the cable fixing plate 5, the transmission cables 4 are placed on the heightening block 10, the outer shell cover 7 is sleeved on the two transmission cables 4, the pressing plate 11 is driven by the adjusting bolt 13 to be located at the uppermost position, the transmission cables 4 are located between the pressing plate 11 and the heightening block 10, then the outer shell cover 7 and the cable fixing plate 5 are fastened through the bolt, the adjusting bolt 13 is screwed in, and the transmission cables 4 are fixed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a junction box body for photovoltaic device which characterized in that, includes the terminal box casing, the outer wall of one side of terminal box casing is equipped with two hickeys, two hickeys all connect a transmission cable that has screwed joint, the lower terminal surface of terminal box casing extends and is equipped with the cable fixed plate, the connection cable card firmware can be dismantled to the upside of cable fixed plate, the cable card firmware is fixed two simultaneously the transmission cable to with cable fixed plate with photovoltaic device fixed connection.

2. The junction box body for a photovoltaic device according to claim 1, wherein the cable holder includes a housing cover provided at both sides thereof with mounting lugs having first through holes, and the cable fixing plate is provided with second through holes aligned with the first through holes.

3. The junction box body for a photovoltaic device according to claim 2, wherein the outer housing cover is a rectangular frame structure with openings at two sides, two inner housing covers are provided inside the outer housing cover, openings are provided at two sides of the inner housing cover, and a cable clamping mechanism is provided inside the inner housing cover.

4. The junction box body for a photovoltaic device according to claim 3, wherein the cable clamping mechanism comprises a block-up block and a pressing plate, the transmission cable is located between the block-up block and the pressing plate, and the block-up block abuts against the upper end face of the cable fixing plate.

5. The junction box body for the photovoltaic device as recited in claim 4, wherein the upper side of the outer casing is provided with two bolt holes, the bolt holes are connected with adjusting bolts, the lower ends of the adjusting bolts are connected with a supporting plate, and the supporting plate is connected with the upper side of the pressing plate.

6. The junction box body for a photovoltaic device according to claim 5, wherein the lower side of the pressing plate and the upper side of the block-up block are each provided with an arched surface for contacting the transmission cable, and the arched surface is attached with a non-slip rubber pad.

7. The junction box body for a photovoltaic device according to claim 1, wherein the two screw interfaces are at the same height.

8. The junction box body for a photovoltaic device according to claim 1, wherein a mounting plate for connecting with the photovoltaic device is provided on a peripheral side of the junction box housing.