An easy-to-maintain photovoltaic combiner box

Abstract

The present application discloses an easy-to-maintain photovoltaic combiner box, comprising a box body and a locking mechanism; the box body comprises a top plate, a bottom plate, pillars and a box door; the top plate and the bottom plate are both arranged in a square plate shape; the top plate and the bottom plate are arranged parallel to each other; pillars are fixedly arranged at the four corners between the top plate and the bottom plate in the vertical direction; slideways are fixedly provided on the opposite surfaces of two adjacent pillars in the vertical direction; a box door is slidably arranged between two adjacent pillars in the vertical direction; the two ends of the box door in the length direction are slidably connected to the corresponding pillars through similar slideways; a locking mechanism is installed on the top plate for locking and unlocking the box door; the locking mechanism comprises a turntable, a connecting plate, a limit rod, a connecting rod, a rotating wheel and a limit hole. The easy-to-maintain photovoltaic combiner box of the present application has a simple structure, is convenient and practical.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic power generation technology, and in particular to an easy-to-maintain photovoltaic combiner box. Background Art

[0002] The photovoltaic combiner box is a wiring device that ensures the orderly connection and convergence function of photovoltaic components in the photovoltaic power generation system. It means that users can connect a certain number of photovoltaic cells of the same specifications in series to form photovoltaic strings, and then connect several photovoltaic strings in parallel to the photovoltaic combiner box. After the convergence in the combiner box, it is used in conjunction with the controller, DC distribution cabinet, photovoltaic inverter, and AC distribution cabinet to form a complete photovoltaic power generation system and achieve grid connection with the city power. The photovoltaic combiner box can ensure that the photovoltaic system is easy to cut off the circuit during maintenance and inspection, and reduce the scope of power outage when the photovoltaic system fails.

[0003] After searching, a patent with the publication (announcement) number CN219554919U discloses an easy-to-maintain photovoltaic junction box, including a master control module and a closed module. The master control module includes a box bottom connected to the master control module, a box top arranged on the top of the box bottom, a plurality of pillars connected between the box bottom and the box top, and a control panel connected between the box bottom and the box top. The top of the box top is provided with a plurality of slide grooves. The closed module includes a side cover movably connected to the box top through a damping shaft, a plug plate adapted to the slide groove, and a handle connected to the side cover, and the plug plate is movably plugged into the handle. In the utility model, the side cover is propped up with a handle, and after the side cover is parallel to the box top, the plug plate is pulled outward to make the plug plate enter the handle, and then the side cover is fixed, and the control panel is completely exposed, which is convenient for the staff to inspect and repair.

[0004] This patent uses the locking method of the plug plate and the handle to unfold multiple side covers at 90 degrees with the box body when inspecting the photovoltaic combiner box, so that the control panel is fully exposed, which is convenient for the staff to inspect. However, in actual work, the side covers unfolded at 90 degrees with the box body may block and hinder the head movement of the staff, or touch the head of the staff and injure the staff, which is not conducive to the staff's inspection. Considering the length of the side covers, a maintenance-friendly photovoltaic combiner box with a box door that can be lifted up and down and convenient for the staff to inspect is needed. Summary of the invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a photovoltaic combiner box which is simple in structure, convenient, practical and easy to maintain.

[0006] The present application provides an easy-to-maintain photovoltaic combiner box, comprising a box body and a locking mechanism;

[0007] The box body includes a top plate, a bottom plate, pillars and a box door; the top plate and the bottom plate are both arranged in a square plate shape; the top plate and the bottom plate are arranged parallel to each other; pillars are fixedly arranged at the four corners between the top plate and the bottom plate in the vertical direction; slideways are fixedly provided on the opposite surfaces of two adjacent pillars in the vertical direction; a box door is slidably arranged between two adjacent pillars in the vertical direction; both ends of the box door in the length direction are slidably connected to the corresponding pillars through adjacent slideways;

[0008] A locking mechanism is installed on the top plate for locking and unlocking the box door; the locking mechanism includes a turntable, a connecting plate, a limit rod, a connecting rod, a rotating wheel and a limit hole.

[0009] Preferably, the center of the bottom surface of the top plate is inwardly recessed in the vertical direction to form a turntable groove; a turntable is rotatably arranged in the turntable groove along the axial direction; a connecting plate is fixedly arranged on the outer wall of one end of the turntable in the radial direction; four connecting plates are evenly arranged along the circumference of the turntable;

[0010] A limit rod is movably inserted into the interior of one end of the top plate along the width direction; four limit rods are evenly arranged along the circumference of the turntable; one end of the limit rod close to the turntable along the axial direction is arranged inside the turntable groove, and is movably connected to the adjacent connecting plate through a connecting rod; the connecting plate, the connecting rod, the limit rod and the box door are arranged in matching groups, and a total of four groups are arranged; the two ends of the connecting rod along the length direction are rotatably connected to the connecting plate and the limit rod of the same group respectively.

[0011] Preferably, a rotating wheel is rotatably provided at the center of the top surface of the top plate in the vertical direction; the rotating wheel coincides with the axis of the turntable, and the two are fixedly connected.

[0012] Preferably, the middle part of the top end and the middle part of the bottom end of the box door are both provided with limiting holes penetrating along the width direction; the limiting holes are matched with the limiting rods.

[0013] Preferably, a handle is fixedly provided on the top surface of the door.

[0014] Preferably, a control panel is installed inside the box.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The present application designs a locking mechanism, which can drive the limit rod to move by rotating the rotating wheel, and can drive multiple limit rods to move at the same time. The movement of the limit rod forms a locking relationship or an unlocking relationship with the limit hole, so that the box door is locked in position or can be freely raised and lowered. The locking mechanism is simple and practical, and the locking process is simple and easy to understand, which is convenient for the staff to raise and lock the box door when inspecting the photovoltaic junction box. After the box door is raised and locked, the staff's field of vision and operating space are greatly increased, and the light level in the photovoltaic junction box is increased, which is convenient for the staff's inspection and maintenance work. At the same time, the box door is raised and lowered by a slide, and the overall device has few gaps, and the probability of water ingress and moisture is low, which can meet the sealing requirements of the control panel.

[0017] It should be understood that the contents described in the Summary of the Invention are not intended to limit the key or important features of the embodiments of the present application, nor are they intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 A schematic diagram of the structure of an easy-to-maintain photovoltaic combiner box provided in an embodiment of the present application;

[0020] Figure 2 A schematic structural diagram of a locking mechanism for an easy-to-maintain photovoltaic combiner box provided in an embodiment of the present application.

[0021] Numbers in the figure: 1, box body; 2, locking mechanism; 3, handle; 4, control panel;

[0022] 11. Top plate; 12. Bottom plate; 13. Pillar; 14. Door; 15. Slide;

[0023] 21. Turntable; 22. Connecting plate; 23. Limit rod; 24. Connecting rod; 25. Rotating wheel; 26. Limit hole; 27. Turntable slot. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant application, rather than to limit the application. It is also necessary to explain that, for ease of description, only the parts related to the application are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Please refer to Figure 1 , Figure 2 , an embodiment of the present application provides an easy-to-maintain photovoltaic combiner box, comprising a box body 1 and a locking mechanism 2;

[0027] The box body 1 includes a top plate 11, a bottom plate 12, pillars 13 and a box door 14; the top plate 11 and the bottom plate 12 are both arranged in a square plate shape; the top plate 11 and the bottom plate 12 are arranged parallel to each other; pillars 13 are fixedly arranged at the four corners between the top plate 11 and the bottom plate 12 along the vertical direction; slideways 15 are fixedly provided on the opposite surfaces of two adjacent pillars 13 along the vertical direction; a box door 14 is slidably arranged between two adjacent pillars 13 along the vertical direction; both ends of the box door 14 along the length direction are slidably connected to the corresponding pillars 13 through adjacent slideways 15;

[0028] A locking mechanism 2 is mounted on the top plate 11 for locking and unlocking the door 14 ; the locking mechanism 2 comprises a rotating disk 21 , a connecting plate 22 , a limiting rod 23 , a connecting rod 24 , a rotating wheel 25 and a limiting hole 26 .

[0029] In this embodiment, rotating the rotating wheel 25 can drive the limit rod 23 to move, and can drive multiple limit rods 23 to move at the same time. The movement of the limit rod 23 forms a locking relationship or an unlocking relationship with the limit hole 26, so that the box door 14 is locked in position or can be freely raised and lowered. The locking mechanism 2 is simple and practical, and the locking process is simple and easy to understand, which is convenient for the staff to raise and lock the box door 14 when inspecting the photovoltaic junction box. After the box door 14 is raised and locked, the staff's field of vision and operating space are greatly increased, and the light level in the photovoltaic junction box is increased, which is convenient for the staff's inspection and maintenance work. At the same time, the box door 14 is raised and lowered by the slide 15, and the overall device has few gaps, and the probability of water ingress and moisture is low, which can meet the sealing requirements of the control panel 4.

[0030] In a preferred embodiment, the center of the bottom surface of the top plate 11 is recessed inwardly in the vertical direction to form a turntable groove 27; a turntable 21 is rotatably arranged inside the turntable groove 27 along the axial direction; a connecting plate 22 is fixedly arranged on the outer wall of one end of the turntable 21 along the radial direction; four connecting plates 22 are evenly arranged along the circumference of the turntable 21;

[0031] A limit rod 23 is movably penetrated inside one end of the top plate 11 along the width direction; four limit rods 23 are evenly arranged along the circumference of the turntable 21; the limit rod 23 is arranged inside the turntable groove 27 at one end close to the turntable 21 along the axial direction, and is movably connected to the adjacent connecting plate 22 through a connecting rod 24; the connecting plate 22, the connecting rod 24, the limit rod 23 and the box door 14 are arranged in matching groups, and a total of four groups are arranged; the two ends of the connecting rod 24 along the length direction are rotatably connected to the connecting plate 22 and the limit rod 23 of the same group respectively.

[0032] Please refer to Figure 1 , Figure 2 In this embodiment, the connecting plate 22, the connecting rod 24, the limiting rod 23 and the box door 14 are arranged in groups that match each other according to the working relationship, and there are four groups evenly arranged along the circumferential direction, and the angle of each group is 90°.

[0033] In another embodiment, the connecting plate 22, the connecting rod 24, the limiting rod 23 and the box door 14 are arranged in groups that match each other according to a working relationship, and there are three groups in total along the circumferential direction. One of the four groups is deleted, so that one of the four box doors 14 is fixed, which facilitates the fixed connection between the fixed box door 14 and the box body 1.

[0034] In a preferred embodiment, a rotating wheel 25 is rotatably provided at the center of the top surface of the top plate 11 in the vertical direction; the axis of the rotating wheel 25 coincides with the axis of the rotating disk 21 , and the two are fixedly connected.

[0035] Please refer to Figure 1 , Figure 2 In this embodiment, the rotating wheel 25 and the rotating disk 21 are rotatably connected to the top plate 11 respectively, and the rotating wheel 25 is fixedly connected to the rotating disk 21. The rotating disk 21 can be driven to rotate by rotating the rotating wheel 25.

[0036] In a preferred embodiment, a limiting hole 26 is formed through the middle of the top end and the middle of the bottom end of the door 14 along the width direction; the limiting hole 26 is matched with the limiting rod 23 .

[0037] Please refer to Figure 1 , Figure 2 In this embodiment, the working principle of the locking mechanism 2 is: rotating the rotating wheel 25, manually driving the rotating wheel 25 to rotate, the rotating wheel 25 synchronously drives the turntable 21 to rotate, and further the connecting rod 24 moves to make the limiting rod 23 move along the axial direction, and the limiting hole 26 is set to match the limiting rod 23.

[0038] When locking the door 14: after lifting the door 14 through the slide 15, align the limiting hole 26 on the door 14 with the corresponding limiting rod 23, and rotate the rotating wheel 25 to move the limiting rod 23, so that the limiting rod 23 extends out of the top plate 11 and is inserted into the limiting hole 26, so that the door 14 is prohibited from moving;

[0039] When unlocking the box door 14 , the rotating wheel 25 is rotated to move the limiting rod 23 so that the limiting rod 23 is retracted into the interior of the top plate 11 , and the limiting rod 23 is no longer retained in the limiting hole 26 . Then, the box door 14 can be lifted or lowered by the slideway 15 .

[0040] In a preferred embodiment, a handle 3 is fixedly provided on the top surface of the cabinet door 14 .

[0041] Please refer to Figure 1 , Figure 2In this embodiment, the lifting and lowering of the box door 14 can be manually operated by the handle 3. By using other auxiliary equipment, such as a round stick, etc. to lift multiple handles 3, multiple box doors 14 can be easily lifted and lowered synchronously.

[0042] In a preferred embodiment, a control panel 4 is installed inside the box 1 .

[0043] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An easy-to-maintain photovoltaic combiner box, characterized in that: It includes a box body and a locking mechanism; The box body comprises a top plate, a bottom plate, pillars and a box door; the top plate and the bottom plate are both arranged in a square plate shape; the top plate and the bottom plate are arranged parallel to each other in the upper and lower directions; the pillars are fixedly arranged at the four corners between the top plate and the bottom plate in the vertical direction; slideways are fixedly provided on the opposite surfaces of two adjacent pillars in the vertical direction; the box door is slidably arranged between two adjacent pillars in the vertical direction; the two ends of the box door in the length direction are slidably connected to the corresponding pillars through the adjacent slideways; The locking mechanism is installed on the top plate and is used to lock and unlock the box door; the locking mechanism includes a turntable, a connecting plate, a limiting rod, a connecting rod, a rotating wheel and a limiting hole.

2. The easy-to-maintain photovoltaic combiner box according to claim 1, characterized in that: The center of the bottom surface of the top plate is sunken inwards in the vertical direction to form a turntable groove; the turntable is rotatably arranged inside the turntable groove along the axial direction; a connecting plate is fixedly arranged on the outer wall of one end of the turntable in the radial direction; four connecting plates are evenly arranged along the circumference of the turntable; A limit rod is movably inserted into the interior of one end of the top plate along the width direction; four limit rods are evenly arranged along the circumference of the turntable; one end of the limit rod close to the turntable along the axial direction is arranged inside the turntable groove, and is movably connected to the adjacent connecting plate through the connecting rod; the connecting plate, the connecting rod, the limit rod and the box door are arranged in matching groups, and there are four groups in total; the two ends of the connecting rod along the length direction are rotatably connected to the connecting plate and the limit rod of the same group respectively.

3. The easy-to-maintain photovoltaic combiner box according to claim 2, characterized in that: The rotating wheel is rotatably arranged at the center of the top surface of the top plate in the vertical direction; the rotating wheel coincides with the axis of the rotating disk, and the two are fixedly connected.

4. The easy-to-maintain photovoltaic combiner box according to claim 3, characterized in that: The middle part of the top end and the middle part of the bottom end of the box door are both provided with the limiting holes penetrating along the width direction; the limiting holes are matched with the limiting rods.

5. The easy-to-maintain photovoltaic combiner box according to claim 4, characterized in that: A handle is fixedly arranged on the top surface of the box door.

6. The easy-to-maintain photovoltaic combiner box according to claim 5, characterized in that: A control panel is installed inside the box.

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