Convenient-to-maintain line concentration box for photovoltaic power station
By introducing anti-penetration components and ventilation systems into the junction box of the photovoltaic power station, the protection and heat dissipation problems of the junction box in rainy and windy environments are solved, ensuring that the internal components are not damaged and maintain good heat dissipation.
Patent Information
- Application Number
- CN202422423328.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The existing photovoltaic power station junction box is easily damaged in rainy and windy environments, and the heat dissipation effect is poor.
An anti-penetration component and a heat dissipation structure are designed, including an anti-penetration component and a ventilation system. The cables are clamped and fixed by the anti-penetration component, and the ventilation system driven by a wind wheel and a motor is used to dissipate heat.
It effectively prevents the intrusion of rain and wind and sand, ensures that the internal components of the junction box are not damaged, and achieves good heat dissipation effect.
Smart Images
Figure CN223322046U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of line junction boxes, and in particular relates to a line junction box for a photovoltaic power station which is easy to maintain. Background Art
[0002] The junction box used in photovoltaic power stations, also known as a DC combiner box or combiner box, is an important component of the photovoltaic power generation system. Its main function is to collect and integrate the DC current from multiple photovoltaic modules (solar panels) and transmit it to subsequent power conversion equipment (such as inverters).
[0003] During the wiring process of the junction box used in the prior art, it is necessary to open a hole in the outer wall of the box and then insert the cable into it. When encountering a rainy and windy environment, rain or wind and sand may enter the junction box and cause damage to the equipment in the box. In addition, it is inconvenient to dissipate heat inside the box when it is outdoors during daily use.
[0004] Therefore, a photovoltaic power station junction box that is easy to maintain is proposed. The junction box has a heat dissipation structure and an outer shell protection and anti-penetration structure, which can make the line distribution inside the box clear and improve the anti-penetration ability outside the box. Utility Model Content
[0005] In order to overcome the problems of the existing photovoltaic power station containers in the process of use, the lack of heat dissipation structure in the box and the poor anti-penetration ability of the box body.
[0006] The technical solution of the present utility model is: a junction box for a photovoltaic power station that is easy to maintain, comprising a cabinet; evenly distributed jacks are opened through the inner walls at the upper and lower ends of the cabinet, anti-penetration components are provided at the upper and lower ends of the cabinet, a first ventilation slot is opened through the rear end of the cabinet, a protective shell is fixedly connected to the rear end of the cabinet, a second ventilation slot is opened through the lower end of the inner wall of the protective shell, a ventilation box is fixedly connected to the rear end of the inner wall of the cabinet, a placement slot is opened at the rear end of the ventilation box, an air outlet is opened at the front end of the ventilation box, the placement slot and the air outlet are interconnected, and the ventilation box and the protective shell are interconnected through the first ventilation slot.
[0007] Preferably, by clamping and fixing the cable with an anti-penetration device, it can prevent the subsequent invasion of rain or wind and sand during use, which may cause damage to the internal components of the cabinet. During the use of the cabinet, the circuits can be sorted and divided by the columns, and the interior of the cabinet can be cooled by the wind wheel, which solves the problem that rain and wind and sand can easily enter the interior of the junction box through the wiring port, thereby damaging the interior of the junction box, and it is inconvenient to cool the interior of the junction box.
[0008] Preferably, a wind wheel is rotatably provided on the inner wall of the placement slot, a motor is fixedly connected to the left end of the ventilation box, and the right end of the output shaft of the motor passes through the ventilation box and is fixedly connected to the left end of the wind wheel.
[0009] Preferably, the anti-permeation component includes a first connecting ring, a ventilation bag, a second connecting ring, a screw ring, a groove body and a nut; the upper and lower ends of the cabinet body are fixed with evenly distributed first connecting rings, the first connecting rings correspond to the jacks one by one, the upper end of the first connecting ring is fixed with the ventilation bag, the other end of the ventilation bag is fixed with the second connecting ring, the upper end of the second connecting ring is threaded with the screw ring, the outer wall of the screw ring is provided with a groove body, and the outer wall of the screw ring is threaded with a nut.
[0010] Preferably, the anti-permeation component includes copper wire; the outer wall of the first connecting ring is provided with copper wire evenly distributed in a circular shape, the copper wire is fixed to the lower end of the second connecting ring, and the other end of the copper wire is fixed to the upper end of the first connecting ring.
[0011] Preferably, a column is fixedly connected to the front end of the ventilation box, and two wire management grooves are provided through the upper and lower ends of the outer wall of the column.
[0012] Preferably, a movable door is rotatably provided at the front end of the cabinet, and the cabinet and the movable door are made of anti-corrosion material.
[0013] Preferably, the air outlet is the air outlet of the wind wheel, and the second ventilation slot is the air inlet of the wind wheel.
[0014] Beneficial effects of the utility model:
[0015] 1. Insert the cable along the inner wall of the second connecting ring so that the second connecting ring and the inner wall of the first connecting ring clamp the cable. Then, rotate the nut to fix the line. The rotation and clamping form a closed space at the connection point, thus preventing subsequent penetration from affecting the internal operation of the cabinet.
[0016] 2. Turn on the motor so that the output shaft of the motor drives the wind wheel to rotate, and then draw air from the second ventilation slot, so that the cool air is discharged through the air outlet, thereby dissipating the heat inside the cabinet. Since the opening of the second ventilation slot is facing downward, it can prevent rainwater and wind and sand from entering the cabinet through the second ventilation slot. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Shown is a schematic diagram of the three-dimensional structure of a junction box for a photovoltaic power station that is easy to maintain according to the present invention;
[0018] Figure 2 Shown is a schematic diagram of the three-dimensional structure of a cabinet of a photovoltaic power station junction box that is easy to maintain according to the present invention;
[0019] Figure 3 Shown is a rear perspective structural diagram of a junction box for a photovoltaic power station that is easy to maintain according to the present invention;
[0020] Figure 4 Shown is a schematic diagram of the three-dimensional disassembly structure of an anti-permeation component of a photovoltaic power station junction box that is easy to maintain according to the utility model;
[0021] Figure 5 Shown is a schematic diagram of the three-dimensional structure of a heat sink for a junction box for a photovoltaic power station that is easy to maintain according to the present invention.
[0022] The marks in the accompanying drawings are: 1. Cabinet body; 101. First connecting ring; 102. Ventilation bag; 103. Copper wire; 104. Second connecting ring; 105. Screw ring; 106. Trough body; 107. Nut; 2. Jack; 3. Movable door; 4. First ventilation slot; 5. Protective shell; 6. Second ventilation slot; 7. Ventilation box; 8. Placement slot; 9. Air outlet; 10. Column; 11. Cable management slot; 12. Motor; 13. Wind wheel. DETAILED DESCRIPTION
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] See also Figure 1-Figure 5 The utility model provides an embodiment: a junction box for a photovoltaic power station that is easy to maintain, comprising a cabinet 1; evenly distributed jacks 2 are opened through the inner walls at the upper and lower ends of the cabinet 1, and anti-penetration components are provided at the upper and lower ends of the cabinet 1. A first ventilation slot 4 is opened through the rear end of the cabinet 1, and a protective shell 5 is fixedly connected to the rear end of the cabinet 1. A second ventilation slot 6 is opened through the lower end of the inner wall of the protective shell 5, and a ventilation box 7 is fixedly connected to the rear end of the inner wall of the cabinet 1. A placement slot 8 is opened at the rear end of the ventilation box 7, and an air outlet 9 is opened at the front end of the ventilation box 7. The placement slot 8 and the air outlet 9 are interconnected, and the ventilation box 7 and the protective shell 5 are interconnected through the first ventilation slot 4.
[0025] See also Figure 2 and Figure 4 In this embodiment, a wind wheel 13 is rotatably provided on the inner wall of the placement slot 8, a motor 12 is fixedly connected to the left end of the ventilation box 7, and the right end of the output shaft of the motor 12 passes through the ventilation box 7 and is fixed to the left end of the wind wheel 13. The air outlet 9 is the air outlet of the wind wheel 13, and the second ventilation slot 6 is the air inlet of the wind wheel 13, which is used for heat dissipation. A movable door 3 is rotatably provided at the front end of the cabinet 1. The cabinet 1 and the movable door 3 are made of anti-corrosion material. A column 10 is fixedly provided at the front end of the ventilation box 7. Two wire management grooves 11 are provided at the upper and lower ends of the outer wall of the column 10 for wire management after the cables are inserted.
[0026] See also Figure 3In this embodiment, the anti-permeation component includes a first connecting ring 101, a ventilation bag 102, a second connecting ring 104, a screw ring 105, a groove body 106 and a nut 107; the upper and lower ends of the cabinet 1 are fixed with evenly distributed first connecting rings 101, and the first connecting rings 101 correspond to the jacks 2 one by one. The upper end of the first connecting ring 101 is fixed with the ventilation bag 102, and the other end of the ventilation bag 102 is fixed with the second connecting ring 104. The upper end of the second connecting ring 104 is screwed with the screw ring 105, and the screw ring 105 is screwed with the nut 107. A groove 106 is provided on the outer wall of the ring 105, and a nut 107 is threadedly installed on the outer wall of the screw ring 105. The anti-permeation component includes a copper wire 103; the outer wall of the first connecting ring 101 is provided with copper wires 103 evenly distributed in a circular shape, and the copper wires 103 are fixed to the lower end of the second connecting ring 104, and the other end of the copper wires 103 is fixed to the upper end of the first connecting ring 101. The rotation direction of the second connecting ring 104 can be adjusted according to the cable installation position through the copper wires 103 for limiting and fixing.
[0027] During operation, the cable is inserted along the inner wall of the second connecting ring 104 so that the second connecting ring 104 and the inner wall of the first connecting ring 101 clamp the cable. Then, the nut 107 is rotated to fix the line with the screw ring 105. Thus, a closed space is formed by rotating and clamping the wiring, thereby preventing subsequent penetration from affecting the internal operation of the cabinet 1.
[0028] When the interior of the cabinet 1 needs to be cooled, the motor 12 is turned on so that the output shaft of the motor 12 drives the wind wheel 13 to rotate, and then air is drawn from the second ventilation slot 6, so that the cool air is discharged through the air outlet 9, thereby dissipating the heat inside the cabinet 1. Since the opening of the second ventilation slot 6 faces downward, rainwater and wind and sand can be prevented from entering the cabinet 1 through the second ventilation slot 6.
[0029] Through the above steps, by clamping and fixing the cable with an anti-penetration device, it can prevent the cable from being invaded by rain or wind and sand during subsequent use, which may cause damage to the internal components of the cabinet 1. During the use of the cabinet 1, the circuit can be sorted and divided by the column 10, and the interior of the cabinet 1 can be cooled by the wind wheel 13, which solves the problem that rain and wind and sand can easily enter the interior of the junction box through the wiring port, thereby damaging the interior of the junction box, and it is inconvenient to cool the interior of the junction box.
[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.
Claims
1. A photovoltaic power station junction box that is easy to maintain, comprising a cabinet (1); characterized in that: The upper and lower inner walls of the cabinet body (1) are provided with evenly distributed jacks (2), the upper and lower inner walls of the cabinet body (1) are provided with anti-permeation components, the rear end of the cabinet body (1) is provided with a first ventilation slot (4), the rear end of the cabinet body (1) is fixedly connected to a protective shell (5), the lower end of the inner wall of the protective shell (5) is provided with a second ventilation slot (6), the rear end of the inner wall of the cabinet body (1) is fixedly connected to a ventilation box (7), the rear end of the ventilation box (7) is provided with a placement slot (8), the front end of the ventilation box (7) is provided with an air outlet (9), the placement slot (8) and the air outlet (9) are mutually connected, and the ventilation box (7) and the protective shell (5) are mutually connected through the first ventilation slot (4).
2. The photovoltaic power station junction box that is easy to maintain according to claim 1, characterized in that: A wind wheel (13) is rotatably provided on the inner wall of the placement groove (8), a motor (12) is fixedly connected to the left end of the ventilation box (7), and the right end of the output shaft of the motor (12) passes through the ventilation box (7) and is fixedly connected to the left end of the wind wheel (13).
3. The photovoltaic power station junction box that is easy to maintain according to claim 1, characterized in that: The anti-permeation component comprises a first connecting ring (101), a ventilation bag (102), a second connecting ring (104), a screw ring (105), a groove body (106) and a nut (107); the upper and lower ends of the cabinet body (1) are fixedly connected with the first connecting rings (101) which are evenly distributed, the first connecting rings (101) correspond to the jacks (2) in a one-to-one manner, the upper end of the first connecting ring (101) is fixedly connected with the ventilation bag (102), the other end of the ventilation bag (102) is fixedly connected with the second connecting ring (104), the upper end of the second connecting ring (104) is screwed with the screw ring (105), the outer wall of the screw ring (105) is provided with a groove body (106), and the outer wall of the screw ring (105) is threadedly mounted with a nut (107).
4. The photovoltaic power station junction box that is easy to maintain according to claim 3, characterized in that: The anti-permeation component includes copper wires (103); the outer wall of the first connecting ring (101) is provided with copper wires (103) evenly distributed in a circular shape, the copper wires (103) are fixed to the lower end of the second connecting ring (104), and the other end of the copper wires (103) is fixed to the upper end of the first connecting ring (101).
5. The photovoltaic power station junction box that is easy to maintain according to claim 1, characterized in that: A column (10) is fixedly connected to the front end of the ventilation box (7), and two wire management grooves (11) are formed through the upper and lower ends of the outer wall of the column (10).
6. The photovoltaic power station junction box that is easy to maintain according to claim 1, characterized in that: A movable door (3) is rotatably provided at the front end of the cabinet body (1), and the cabinet body (1) and the movable door (3) are made of anti-corrosion materials.
7. The photovoltaic power station junction box that is easy to maintain according to claim 1, characterized in that: The air outlet (9) is the air outlet of the wind wheel (13), and the second ventilation slot (6) is the air inlet of the wind wheel (13).