Box door structure of photovoltaic combiner box

Abstract

The utility model discloses a box door structure of a photovoltaic combiner box, which relates to the technical field of photovoltaic combiner boxes, and comprises two groups of mounting frames arranged at the port of the photovoltaic combiner box, and the two groups of mounting frames are respectively arranged at the upper side and the lower side of the port of the photovoltaic combiner box. The photovoltaic combiner box comprises a mounting frame, two symmetrically arranged box door bodies are slidably connected in the mounting frame, a rack is arranged at one end of each box door body, a driving mechanism is arranged at one end of each rack, the driving mechanisms are located in notches preset in the photovoltaic combiner box, and the box door bodies are driven by the driving mechanisms to slide in the mounting frame. According to the utility model, an induction type control structure is adopted, the opening and closing operation of the box door body can be automatically controlled, manpower is saved, and the hidden danger problem of unsmooth heat dissipation or water invasion of the photovoltaic combiner box is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic combiner boxes, in particular to a box door structure of a photovoltaic combiner box. Background Art

[0002] The photovoltaic combiner box is an important component used in photovoltaic power generation systems. Its main function is to concentrate the power output of multiple photovoltaic modules to one point and then transmit it to the inverter for conversion. It usually includes electrical components such as DC circuit breakers, current detectors, overvoltage protectors, and mechanical components such as cable junction boxes and grounding cables.

[0003] 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 convergence in the photovoltaic 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.

[0004] When the existing photovoltaic combiner box is in operation, it has multiple components of power equipment inside. The components stored inside need to be heat-dissipated. At this time, the photovoltaic combiner box installed outdoors is used with the door in an open and closed state in order to fully dissipate heat in hot weather. However, when it rains, if the door is not closed in time, outdoor rainwater can easily enter the photovoltaic combiner box through the open door and cause damage to the components, resulting in the hidden dangers of poor heat dissipation or water intrusion in the photovoltaic combiner box. Utility Model Content

[0005] In view of the above-mentioned technical problems existing in the application of the box door of the existing photovoltaic combiner box, the utility model provides a box door structure of the photovoltaic combiner box.

[0006] A box door structure of a photovoltaic combiner box, comprising a mounting frame arranged at a port of the photovoltaic combiner box, wherein two groups of the mounting frames are arranged at the upper and lower sides of the port of the photovoltaic combiner box, respectively, and two symmetrically arranged box door bodies are slidably connected in the mounting frame, a rack is arranged at one end of the box door body, and a driving mechanism is arranged at one end of the rack, the driving mechanism is located in a preset notch in the photovoltaic combiner box, and the box door body is driven to slide along the mounting frame by the driving mechanism;

[0007] A temperature sensor is provided on one side wall of the door body close to the photovoltaic combiner box. When the temperature sensor detects that the temperature in the photovoltaic combiner box is higher than a preset monitoring threshold, the servo motor is started through a preset PLC controller to drive the two door bodies to slide toward the side away from the photovoltaic combiner box.

[0008] A photoelectric sensor is provided on the box door body. When the photoelectric sensor detects the presence of rain in the environment, the servo motor is started through a preset PLC controller to drive the two box door bodies to slide toward the side close to the photovoltaic combiner box.

[0009] Furthermore, a slide groove is provided in the installation frame, and the door body is slidably connected in the slide groove.

[0010] Furthermore, the driving mechanism includes a servo motor and a gear. The servo motor is arranged in a preset slot in the photovoltaic combiner box. The gear is arranged on the rotating shaft of the servo motor. The gear is meshed and rotatably connected with the rack.

[0011] Furthermore, the servo motors arranged on both sides of the door body rotate in opposite directions, and one end of the slot is provided with a through opening connected to the rack on the door body.

[0012] Furthermore, a slide rail is provided on one side wall of the box door body, a conductive block is slidably connected in the slide rail, one end of the conductive block abuts against the inner wall of the photovoltaic combiner box, a copper belt is provided at one end of the conductive block, and one end of the copper belt is electrically connected to a preset grounding wire in the photovoltaic combiner box.

[0013] Beneficial effects of the utility model:

[0014] 1. When the temperature sensor detects that the temperature inside the photovoltaic combiner box exceeds the preset monitoring threshold, an electrical signal is transmitted to the PLC controller, which then controls the start of the servo motor. The two servo motors rotate in different directions, which drives the gears to rotate in the opposite direction, and then drives the rack, so that the two door bodies slide in opposite directions along the slide groove of the installation frame, and open the photovoltaic combiner box, so that the temperature inside the photovoltaic combiner box can be dissipated through the opened door body, thereby improving the heat dissipation effect; when the photoelectric sensor detects that there is rain outside, an electrical signal is transmitted to the PLC controller, which controls the start of the servo motor. The motor runs, and the two servo motors have different directions of rotation, which in turn drives the gears to rotate in the opposite direction, and then drives the rack, so that the two door bodies slide in opposite directions along the slide groove of the installation frame to reset, and close the photovoltaic combiner box, so that when it rains, the photovoltaic combiner box can be automatically closed in time to avoid the intrusion of water bodies and prevent water vapor from corroding into the interior of the photovoltaic combiner box and causing damage to components. Through the cooperation of temperature sensors and photoelectric sensors, an inductive control structure is adopted to facilitate the opening and closing of the box door body, save manpower, and avoid the hidden dangers of poor heat dissipation or water intrusion in the photovoltaic combiner box.

[0015] 2. By sliding the door body open and closed, the conductive block is driven to slide along the slide rail, and then the conductive block abuts against the inner wall of the photovoltaic combiner box, so that the sliding of the door body will not drive the conductive block to move, but the conductive block is always in contact with the door body, and the copper belt is always electrically connected to the grounding wire, so that the door body can still maintain a good grounding state in the sliding operation state, ensuring the safety and stability of the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the door body.

[0017] Figure 2 It is a three-dimensional diagram of the box door body.

[0018] Figure 3 A cross-sectional view of the rack.

[0019] Reference numerals

[0020] 1. Installation frame; 2. Box door body; 3. Rack; 4. Driving mechanism; 41. Servo motor; 42. Gear; 5. Temperature sensor; 6. Photoelectric sensor; 7. Slide groove; 8. Slide rail; 9. Conductive block; 10. Copper belt; 11. Notch; 12. Through hole. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0022] Example

[0023] A door structure of a photovoltaic combiner box, comprising an installation frame 1 arranged at the port of the photovoltaic combiner box, two groups of installation frames 1 are arranged, and the two groups of installation frames 1 are respectively arranged at the upper and lower sides of the port of the photovoltaic combiner box, and two symmetrically arranged door bodies 2 are slidably connected in the installation frame 1, and a rectangular slide groove 7 is opened in the installation frame 1, and the two ends of the door body 2 are respectively slidably connected in the matching slide groove 7. A rack 3 is arranged at one end of the door body 2, and a driving mechanism 4 is arranged at one end of the rack 3. The driving mechanism 4 is located in a preset notch 11 in the photovoltaic combiner box, and the door body 2 is driven to slide along the installation frame 1 through the driving mechanism 4, referring to Figure 1 , Figure 2 .

[0024] A temperature sensor 5 is provided on a side wall of the door body 2 close to the photovoltaic combiner box. When the temperature sensor 5 detects that the temperature inside the photovoltaic combiner box is higher than a preset monitoring threshold, the servo motor 41 is started through the preset PLC controller, and the two door bodies 2 are driven to slide toward the side away from the photovoltaic combiner box. The monitoring end of the temperature sensor 5 is set toward the side inside the photovoltaic combiner box. When the temperature sensor 5 detects that the temperature inside the photovoltaic combiner box exceeds the preset monitoring threshold, an electrical signal is transmitted to the PLC controller, which controls the start of the servo motor 41. The two servo motors 41 have different directions of rotation, which drives the gear 42 to rotate in the opposite direction, and then drives the rack 3, so that the two door bodies 2 slide in opposite directions along the slide groove 7 of the mounting frame 1, and the photovoltaic combiner box is opened, so that the temperature inside the photovoltaic combiner box can be dissipated through the opened door body 2, thereby improving the heat dissipation effect. Refer to Figure 1 , Figure 2 .

[0025] A photoelectric sensor 6 is provided on the door body 2. When the photoelectric sensor 6 detects rain in the environment, the servo motor 41 is started to operate through the preset PLC controller, and the two door bodies 2 are driven to slide toward the side close to the photovoltaic junction box. The photoelectric sensor 6 is a sensor that detects rain through the photoelectric effect. Its principle is to detect raindrops through the changes caused by the light beam being blocked by rain. The monitoring end of the photoelectric sensor 6 is set toward the external environment. When the photoelectric sensor 6 detects rain outside, it transmits an electrical signal to the PLC controller, which then controls the start of the servo motor 41. The two servo motors 41 have different directions of rotation, which drives the gear 42 to rotate in the opposite direction, and then drives the rack 3, so that the two door bodies 2 slide and reset in opposite directions along the slide groove 7 of the mounting frame 1, and close the photovoltaic junction box, so that when it rains, the photovoltaic junction box can be automatically closed in time to avoid the intrusion of water bodies and prevent water vapor from eroding into the interior of the photovoltaic junction box and causing damage to components. Refer to Figure 1 , Figure 3 .

[0026] The driving mechanism 4 includes a servo motor 41 and a gear 42. The servo motor 41 is arranged in a preset notch 11 in the photovoltaic combiner box. The gear 42 is arranged on the rotating shaft of the servo motor 41. The gear 42 is meshed and rotatably connected with the rack 3. The servo motors 41 arranged on both sides of the box door body 2 rotate in opposite directions. One end of the notch 11 is provided with a rectangular opening 12 connected to the rack 3 on the box door body 2. Through the cooperation of the temperature sensor 5 and the photoelectric sensor 6, an inductive control structure is adopted to facilitate the automatic control of the opening and closing operation of the box door body 2, save manpower, and avoid the hidden dangers of poor heat dissipation or water intrusion in the photovoltaic combiner box. Refer to Figure 1 , Figure 3 .

[0027] A dovetail slide rail 8 is provided on one side wall of the door body 2, and a conductive block 9 is slidably connected inside the slide rail 8. The conductive block 9 is made of copper, and one end of the conductive block 9 abuts against the inner wall of the photovoltaic combiner box. A copper belt 10 is provided at one end of the conductive block 9, and the conductive block 9 is in contact with the copper belt 10 for easy conduction. One end of the copper belt 10 is electrically connected to a preset grounding wire in the photovoltaic combiner box. By sliding the door body 2 open and closed, the conductive block 9 is driven to slide along the slide rail 8, and then the conductive block 9 abuts against the inner wall of the photovoltaic combiner box, so that the sliding of the door body 2 will not drive the conductive block 9 to move, but the conductive block 9 is always in contact with the door body 2, and the copper belt 10 is always electrically connected to the grounding wire, so that the door body 2 can maintain a good grounding state in a sliding operating state, thereby ensuring the safety and stability of the door body 2, refer to Figure 1 , Figure 3 .

[0028] Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described, or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the utility model.

Claims

1. A door structure of a photovoltaic combiner box, characterized in that: The invention comprises an installation frame (1) arranged at the port of a photovoltaic combiner box, wherein the installation frame (1) is provided with two groups, and the two groups of the installation frames (1) are respectively arranged at the upper and lower sides of the port of the photovoltaic combiner box, and two symmetrically arranged box door bodies (2) are slidably connected in the installation frame (1), a rack (3) is arranged at one end of the box door body (2), and a driving mechanism (4) is arranged at one end of the rack (3), and the driving mechanism (4) is located in a preset notch (11) in the photovoltaic combiner box, and the box door body (2) is driven to slide along the installation frame (1) through the driving mechanism (4); A temperature sensor (5) is provided on a side wall of the door body (2) close to the photovoltaic combiner box. When the temperature sensor (5) detects that the temperature in the photovoltaic combiner box is higher than a preset monitoring threshold, a servo motor (41) is started to operate through a preset PLC controller, and the two door bodies (2) are driven to slide toward a side away from the photovoltaic combiner box. A photoelectric sensor (6) is provided on the box door body (2). When the photoelectric sensor (6) detects the presence of rain in the environment, a servo motor (41) is started to operate through a preset PLC controller, and the two box door bodies (2) are driven to slide toward a side close to the photovoltaic combiner box.

2. A photovoltaic combiner box door structure according to claim 1, characterized in that: A sliding groove (7) is provided in the installation frame (1), and the door body (2) is slidably connected in the sliding groove (7).

3. The box door structure of a photovoltaic combiner box according to claim 1, characterized in that: The driving mechanism (4) comprises a servo motor (41) and a gear (42); the servo motor (41) is arranged in a preset notch (11) in the photovoltaic combiner box; the gear (42) is arranged on a rotating shaft of the servo motor (41); and the gear (42) is meshed and rotationally connected with the rack (3).

4. A photovoltaic combiner box door structure according to claim 3, characterized in that: The servo motors (41) arranged on both sides of the door body (2) rotate in opposite directions, and one end of the slot (11) is provided with a through opening (12) which is connected to the rack (3) on the door body (2).

5. The door structure of a photovoltaic combiner box according to claim 1, characterized in that: A slide rail (8) is provided on one side wall of the box door body (2), a conductive block (9) is slidably connected inside the slide rail (8), one end of the conductive block (9) abuts against the inner wall of the photovoltaic combiner box, one end of the conductive block (9) is provided with a copper belt (10), and one end of the copper belt (10) is electrically connected to a grounding wire preset in the photovoltaic combiner box.

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