Controller explosion-proof protection structure for photovoltaic energy storage

Abstract

The utility model relates to the technical field of photovoltaic protection, and discloses a controller explosion-proof protection structure for photovoltaic energy storage, which comprises a protection box, a box cover is arranged at the upper end of the protection box, spring pins are connected to the outer walls of the four corners of the lower end of the box cover through bearings, the other ends of the spring pins are connected with first connecting columns, and the first connecting columns are connected with second connecting columns. A connecting screw is fixed to the outer wall of the other end of the first connecting column, the end, away from the box cover, of the first connecting column is connected with a second connecting column through the connecting screw, and the other end of the second connecting column is connected with a mounting plate through a spring pin. The controller explosion-proof protection structure for photovoltaic energy storage is provided with the mounting plate which is used for providing a stable mounting position for the controller circuit board, providing a buffer protection function through elastic deformation of the spring pin on the first connecting column and the second connecting column, and providing better explosion-proof protection capability in cooperation with the explosion-proof plate; therefore, the controller is prevented from being damaged due to impact in the operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic protection, in particular to an explosion-proof protection structure of a controller for photovoltaic energy storage. Background Art

[0002] A photovoltaic controller is an automatic control device used in solar power generation systems to control the charging of batteries by the solar array and the power supply from the batteries to the solar inverter load. To ensure stable operation, a protective structure is typically installed on the controller to improve its suitability in various environments and durability in harsh conditions.

[0003] After searching, we found a photovoltaic controller with a highly protective structure with publication number CN218124623U, which includes a base; a fixing component and a protective unit are provided on the top of the base, which is used to solve the problem that the protective device is usually fixed by bolts, but the bolt fixing installation is more troublesome. This practical application lacks a protective structure. When the controller components are damaged by an external explosion, the internal components are easily damaged due to the impact force of the explosion, affecting the normal operation of the controller. For this reason, we propose an explosion-proof protection structure for a controller for photovoltaic energy storage. Utility Model Content

[0004] The purpose of the present invention is to provide an explosion-proof protection structure for a photovoltaic energy storage controller to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: an explosion-proof protection structure for a photovoltaic energy storage controller, comprising:

[0006] A protection box, wherein a box cover is installed on the upper end of the protection box, and spring pins are connected to the outer walls of the four corners of the lower end of the box cover through bearings, the other end of the spring pin is connected to a first connecting column, and a connecting screw is fixed to the outer wall of the other end of the first connecting column, and the end of the first connecting column away from the box cover is connected to the second connecting column through a connecting screw, and the other end of the second connecting column is connected to a mounting plate through a spring pin, and a controller circuit board is mounted on the outer wall of the mounting plate close to the box cover through bolts;

[0007] A protection frame is fixed to the inner surface of the lower end of the protection box. An explosion-proof plate is laid on the inner groove of the protection frame. Fixing holes are opened on the outer walls of the four corners of the protection frame, and the fixing holes penetrate to the outer wall of the lower end of the protection box.

[0008] Furthermore, the box cover is elastically connected to the first connecting column through a spring pin, the first connecting column is threadedly connected to the second connecting column through a connecting screw, and the mounting plate is elastically connected to the second connecting column through a spring pin.

[0009] Furthermore, the outer dimensions of the protection frame match those of the protection box, the explosion-proof plates are evenly distributed at equal distances along the inner surface of the protection frame, and the fixing holes are symmetrically arranged about the central axis of the protection frame.

[0010] Furthermore, heat dissipation grilles are provided on both side outer walls of the protection box, a fan is embedded in the middle outer wall of the box cover by bolts, and a filter is laid on the middle outer wall of the fan.

[0011] Furthermore, the heat dissipation grilles are symmetrically arranged with respect to the central axis of the protection box, and the fan is connected to the protection box through the filter.

[0012] Furthermore, both outer walls of the protection box and the box cover are provided with connection holes, and buckles are installed on the inner sides of the connection holes.

[0013] Furthermore, the connection holes are symmetrically arranged with respect to the central axis of the protection box and the box cover, and the box cover is snap-fitted to the protection box via the buckles and the connection holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The explosion-proof protection structure of the photovoltaic energy storage controller is provided with a mounting plate, which is used to provide a stable mounting position for the controller circuit board, and provides a buffering protection function through the elastic deformation of the spring pin on the first connecting column and the second connecting column, and cooperates with the explosion-proof plate to provide better explosion-proof protection capability, thereby preventing the controller from being damaged by impact during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model in the combined working state;

[0017] Figure 2 This is a schematic diagram of the structure of the protective box and the box cover in the open state of the utility model;

[0018] Figure 3 This is a partially enlarged structural diagram of the first connecting column and the second connecting column of the present invention;

[0019] Figure 4 It is a schematic diagram of the inverted structure of the box cover of the utility model.

[0020] In the figure: 1. Protection box; 2. Box cover; 3. Spring pin; 4. First connecting column; 5. Connecting screw; 6. Second connecting column; 7. Mounting plate; 8. Controller circuit board; 9. Protection frame; 10. Fixing hole; 11. Explosion-proof plate; 12. Heat dissipation grille; 13. Fan; 14. Filter; 15. Connecting hole; 16. Buckle. DETAILED DESCRIPTION

[0021] 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 are within the scope of protection of the present invention.

[0022] This utility model provides an explosion-proof protection structure for a photovoltaic energy storage controller through improvement. Figures 1-4 , including: a protection box 1, a box cover 2 is installed on the upper end of the protection box 1, and the outer walls of the four corners of the lower end of the box cover 2 are connected to spring pins 3 through bearings, and the bearings are used to enable the spring pins 3 and the first connecting column 4 to rotate on the box cover 2; the other end of the spring pin 3 is connected to the first connecting column 4, and the box cover 2 is elastically telescopically connected to the first connecting column 4 through the spring pin 3, and a connecting screw 5 is fixed to the outer wall of the other end of the first connecting column 4, and the end of the first connecting column 4 away from the box cover 2 is connected to the second connecting column 6 through the connecting screw 5, and the first connecting column 4 is threadedly connected to the second connecting column 6 through the connecting screw 5, and the other end of the second connecting column 6 is connected to a mounting plate 7 through the spring pin 3, and the mounting plate 7 is elastically telescopically connected to the second connecting column 6 through the spring pin 3, and the provided mounting plate 7 is used to provide a stable mounting position for the controller circuit board 8, and is connected to the first connecting column 4 through the spring pin 3 The elastic deformation on the second connecting column 6 provides a buffering protection function, and cooperates with the explosion-proof plate 11 to provide better explosion-proof protection capability, thereby preventing the controller from being damaged by impact during operation; the outer wall of the mounting plate 7 close to the box cover 2 is installed with a controller circuit board 8 by bolts, and a protective frame 9 is fixed to the inner surface of the lower end of the protection box 1. The protective frame 9 is consistent with the outer dimensions of the protection box 1, and the explosion-proof plate 11 is laid on the inner groove of the protective frame 9, and the explosion-proof plate 11 is evenly distributed at equal distances along the inner surface of the protective frame 9. The explosion-proof plate 11 is used to provide flame retardancy, explosion proof, sound insulation and moisture proof functions; fixing holes 10 are opened on the outer wall of the four corners of the protective frame 9, and the fixing holes 10 pass through the outer wall of the lower end of the protection box 1, and the fixing holes 10 are symmetrically arranged about the central axis of the protective frame 9. The fixing holes 10 are used to firmly install the protection box 1 through fasteners so that the protection box 1 can be installed in a suitable position.

[0023] See also Figure 2 and Figure 4, a photovoltaic energy storage controller explosion-proof protection structure, comprising: a protection box 1 is provided with a heat dissipation grille 12 on both sides of the outer wall, the heat dissipation grille 12 is symmetrically arranged about the central axis of the protection box 1, and the heat dissipation grille 12 is used to passively dissipate the heat generated by the controller circuit board 8 when it is working; a fan 13 is embedded in the middle outer wall of the box cover 2 by bolts, and a filter 14 is laid on the middle outer wall of the fan 13, and the fan 13 is connected to the protection box 1 through the filter 14. The fan 13 is used to actively cool and dissipate heat for the controller circuit board 8, and filter impurities in the air, forming a circulating air duct with the heat dissipation grille 12, thereby improving the heat dissipation efficiency and preventing the normal operation of the controller circuit board 8 from being affected by heat accumulation during operation.

[0024] See also Figure 2 , a photovoltaic energy storage controller explosion-proof protection structure, including: the outer walls of both sides of the protection box 1 and the box cover 2 are opened with connection holes 15, the connection holes 15 are symmetrically arranged about the central axis of the protection box 1 and the box cover 2, and the inner side of the connection hole 15 is installed with a buckle 16, and the box cover 2 is buckled with the protection box 1 through the buckle 16 and the connection hole 15. The buckle 16 is used to make the box cover 2 firmly buckled on the protection box 1 to prevent the controller circuit board 8 from falling off from the protection box 1 during operation, and the design of the buckle 16 makes it easy for the operator to open and close the box cover 2, and facilitates the inspection and maintenance of the protection structure and the controller.

[0025] Working principle: For this type of explosion-proof protection structure for photovoltaic energy storage controllers, the staff will first install the protection box 1 at the location where the controller needs to be installed through the fixing holes 10 and fasteners. The protection frame 9 and explosion-proof plate 11 fixed on the inner surface of the protection box 1 can provide better flame retardant, explosion-proof, moisture-proof and sound insulation effects for the controller part to be installed, reducing the damage caused by the explosion impact after the controller part is installed in the protection box 1. After that, the staff will install the controller circuit board 8 of the controller part on the mounting plate 7 through fasteners, and then connect and install the box cover 2 and the mounting plate 7 by rotating the first connecting column 4 and the connecting screw 5. Then the box cover 2 and the mounting plate 7 are connected by the spring pin 3 and the first connecting column 4. It forms a combination with the second connecting column 6, and can further reduce the damage of the controller circuit board 8 due to explosion impact, etc. through the elastic deformation of the spring pin 3, so that the protection structure can provide better explosion-proof protection function, and the box cover 2 is fastened to the upper end of the protection box 1 through the connecting hole 15 and the buckle 16, which is convenient for the staff to disassemble, maintain, inspect and clean. Finally, the heat generated during the operation of the controller circuit board 8 is passively dissipated through the heat dissipation grille 12, and is actively dissipated by the clean air input by the fan 13 and the filter 14, and a circulating air duct is formed between the fan 13 and the heat dissipation grille 12, which improves the heat dissipation efficiency of the protection structure and prevents the controller circuit board 8 from shutting down due to overheating.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic energy storage controller explosion-proof protection structure, characterized in that: include: A protective box (1), wherein a box cover (2) is installed at the upper end of the protective box (1), and the outer walls of the four corners of the lower end of the box cover (2) are connected to spring pins (3) through bearings, the other end of the spring pins (3) is connected to a first connecting column (4), the outer wall of the other end of the first connecting column (4) is fixed with a connecting screw (5), the end of the first connecting column (4) away from the box cover (2) is connected to a second connecting column (6) through the connecting screw (5), the other end of the second connecting column (6) is connected to a mounting plate (7) through the spring pins (3), and a controller circuit board (8) is mounted on the outer wall of the mounting plate (7) close to the box cover (2) through bolts; A protection frame (9) is fixed to the inner surface of the lower end of the protection box (1), an explosion-proof plate (11) is laid on the inner groove of the protection frame (9), and fixing holes (10) are opened on the outer wall of the four corners of the protection frame (9), and the fixing holes (10) penetrate to the outer wall of the lower end of the protection box (1).

2. The explosion-proof protective structure of a photovoltaic energy storage controller according to claim 1, characterized in that: The box cover (2) is elastically and telescopically connected to the first connecting column (4) via a spring pin (3), the first connecting column (4) is threadedly connected to the second connecting column (6) via a connecting screw (5), and the mounting plate (7) is elastically and telescopically connected to the second connecting column (6) via the spring pin (3).

3. The explosion-proof protective structure of a photovoltaic energy storage controller according to claim 1, characterized in that: The protection frame (9) matches the outer dimensions of the protection box (1), and the explosion-proof plates (11) are evenly distributed at equal distances along the inner surface of the protection frame (9), and the fixing holes (10) are symmetrically arranged about the central axis of the protection frame (9).

4. The explosion-proof protective structure of a photovoltaic energy storage controller according to claim 1, characterized in that: The outer walls of both sides of the protection box (1) are provided with heat dissipation grilles (12), the middle outer wall of the box cover (2) is embedded with a fan (13) by means of bolts, and the middle outer wall of the fan (13) is paved with a filter screen (14).

5. The explosion-proof protection structure of a photovoltaic energy storage controller according to claim 4, characterized in that: The heat dissipation grille (12) is symmetrically arranged with respect to the central axis of the protection box (1), and the fan (13) is connected to the protection box (1) through the filter (14).

6. The explosion-proof protective structure of a photovoltaic energy storage controller according to claim 1, characterized in that: The outer walls of both sides of the protection box (1) and the box cover (2) are provided with connection holes (15), and buckles (16) are installed inside the connection holes (15).

7. The explosion-proof protection structure of a photovoltaic energy storage controller according to claim 6, characterized in that: The connection holes (15) are symmetrically arranged with respect to the central axis of the protection box (1) and the box cover (2), and the box cover (2) is connected to the protection box (1) in a buckle-fitting manner via the buckle (16) and the connection holes (15).

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