Photovoltaic module junction box

Abstract

The utility model discloses a photovoltaic module junction box, which comprises a junction box body, a reinforcing box and radiating fins, the upper end of the junction box body is provided with a box cover in a clamping way, and the front end of the junction box body is fixedly provided with a connecting wire; a metal spring is fixedly installed at the inner end of the reinforcing box, an arc-shaped block is fixedly installed at the upper end of the metal spring, and the arc-shaped block is attached to the lower side of the connecting line; the cooling fins are fixedly installed at the inner end of the junction box body, hollow-out grooves are formed in the inner ends of the cooling fins, cooling strips are arranged at the lower ends of the cooling fins at equal intervals, installation strips are fixedly installed at the rear end of the reinforcing box, and the installation strips are clamped at the front end of the junction box body. Loosening is avoided, the wiring firmness is improved, heat dissipation of the interior of the junction box body is facilitated, the service life is prolonged, and the transmission stability is improved.

Description

Technical Field

[0001] The utility model relates to the field of junction boxes, in particular to a photovoltaic component junction box. Background Art

[0002] The photovoltaic module junction box is a connection device between the solar cell array composed of solar cell modules and the solar charging control device. Its main function is to connect and protect solar photovoltaic modules, connect the power generated by solar cells to external lines, and conduct the current generated by photovoltaic modules.

[0003] However, the existing photovoltaic module junction box has wiring and internal welding. When the junction box connecting wires are connected to external devices, it is easy to pull the junction box connecting wires, affecting the stability of the wiring. Severe pulling may also cause the joints to loosen, affecting use. Therefore, we propose a photovoltaic module junction box to solve the above problems. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a photovoltaic module junction box, which can solve the technical problem that the existing photovoltaic module junction box proposed in the above background technology has wiring and internal welding, and when the junction box connecting wires are connected to external equipment, it is easy to pull the junction box connecting wires, affecting the stability of the wiring. Severe pulling may also cause the joints to loosen, affecting the use.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a junction box body, a reinforcement box and a heat sink,

[0006] A box cover is mounted on the upper end of the junction box body, and a connecting wire is fixedly mounted on the front end of the junction box body;

[0007] A metal spring is fixedly installed at the inner end of the reinforcement box, and an arc block is fixedly installed at the upper end of the metal spring, and the arc block is attached to the lower side of the connecting line;

[0008] The heat sink is fixedly mounted on the inner end of the junction box body, a hollow groove is provided on the inner end of the heat sink, and heat dissipation strips are equidistantly arranged on the lower end of the heat sink.

[0009] As a preferred technical solution of the utility model, a mounting bar is fixedly mounted on the rear end of the reinforcement box, and the mounting bar is engaged with the front end of the junction box body.

[0010] As a preferred technical solution of the utility model, a limit card is mounted on the inner end of the installation strip, and the limit card is located inside the junction box body.

[0011] As a preferred technical solution of the utility model, a cover plate is snap-fitted and installed on the upper end of the reinforcement box, and an arc-shaped groove is opened at the inner end of the cover plate, and the arc-shaped groove wraps around the outer end of the connecting line.

[0012] As a preferred technical solution of the utility model, the inner ends of the reinforcement box and the junction box body are both threadedly connected with screws.

[0013] As a preferred technical solution of the utility model, a bayonet is provided at the front end of the junction box body, and the connecting wire is engaged at the inner end of the bayonet.

[0014] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0015] 1. A reinforcement box, a metal spring, an arc block and a cover plate are provided. When the connecting wire is pulled, the arc block presses down the metal spring under the pressure of the connecting wire, and the metal spring is compressed downward, which plays a role of buffering and extending the connecting wire, and can reduce the pulling force on the connecting wire, avoid loosening, and improve the firmness of the connection;

[0016] 2. A heat sink, hollow grooves and heat dissipation strips are provided. The heat sink can absorb the heat generated inside the junction box body and dissipate the heat through the hollow grooves and heat dissipation strips, which is convenient for heat dissipation inside the junction box body, prolongs the service life and improves the stability of transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the photovoltaic module junction box of the utility model;

[0018] Figure 2 This is a schematic diagram of the side cutaway structure of the photovoltaic module junction box of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the photovoltaic module junction box reinforcement box of the utility model;

[0020] Figure 4 This is a schematic diagram of the front view structure of the photovoltaic module junction box of the utility model;

[0021] Among them: 1. Junction box body; 2. Reinforcement box; 3. Heat sink; 4. Box cover; 5. Connecting wire; 6. Metal spring; 7. Arc block; 8. Cover plate; 9. Arc groove; 10. Screw; 11. Bayonet; 12. Mounting strip; 13. Limit card; 14. Hollow groove; 15. Heat dissipation strip. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0023] Example

[0024] Please refer to Figure 1-4 As shown, the utility model provides a technical solution: a photovoltaic module junction box;

[0025] The upper end of the junction box body 1 is snap-fitted with a box cover 4, the front end of the junction box body 1 is fixedly mounted with a connecting wire 5, the heat sink 3 is fixedly mounted on the inner end of the junction box body 1, the inner end of the heat sink 3 is provided with a hollow groove 14, and the lower end of the heat sink 3 is equidistantly provided with heat dissipation strips 15. The front end of the junction box body 1 is provided with a bayonet 11, and the connecting wire 5 is snap-fitted with the inner end of the bayonet 11, which is convenient for dissipating heat inside the junction box body 1, extending the service life, and improving the stability of transmission;

[0026] A metal spring 6 is fixedly installed on the inner end of the reinforcement box 2, and an arc block 7 is fixedly installed on the upper end of the metal spring 6. The arc block 7 is attached to the lower side of the connecting line 5. A mounting strip 12 is fixedly installed on the rear end of the reinforcement box 2, and the mounting strip 12 is snap-fitted to the front end of the junction box body 1. A limit card 13 is snap-fitted on the inner end of the mounting strip 12, and the limit card 13 is located inside the junction box body 1. A cover plate 8 is snap-fitted on the upper end of the reinforcement box 2, and an arc groove 9 is provided on the inner end of the cover plate 8, and the arc groove 9 is wrapped around the outer end of the connecting line 5. The inner ends of the reinforcement box 2 and the junction box body 1 are both threadedly connected with screws 10, which can reduce the pulling force on the connecting line 5, avoid loosening, and improve the firmness of the wiring;

[0027] Specific working principle:

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, when the photovoltaic module junction box is used, the reinforcement box 2 is installed at the front end of the junction box body 1. When installing the reinforcement box 2, the installation strip 12 at the rear end of the reinforcement box 2 is inserted into the front end of the junction box body 1, and then the limit card 13 is snapped into the rear end of the installation strip 12 for fixing, and then the connecting wire 5 is passed around the outer end of the arc block 7. The metal spring 6 is a high-strength spring, which can provide a good support effect for the connecting wire 5. Then the connecting wire 5 is snapped into the inside of the bayonet 11, and then the cover plate 8 is taken out and snapped into the upper end of the junction box body 1. The arc groove 9 is wrapped around the outer end of the connecting wire 5, and then it is fixed with the screw 10. When the photovoltaic module is installed, when the connecting wire 5 is pulled, the connecting wire 5 presses the arc block 7 downward, and the metal spring 6 is compressed to buffer the connecting wire 5. If no pulling occurs, the arc block 7 and the metal spring 6 do not move.

[0029] like Figure 2 As shown, during use, if the internal temperature of the junction box body 1 is high, the heat sink 3 can absorb the heat inside the junction box body 1 and transfer it downward to the heat dissipation bar 15, and the hollow groove 14 and the heat dissipation bar 15 dissipate the heat to reduce the temperature inside the junction box body 1. The above completes a series of operations of the photovoltaic module junction box. The contents not described in detail in this description belong to the prior art known to professional and technical personnel in this field.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A photovoltaic module junction box, comprising: a junction box body (1), a reinforcement box (2) and a heat sink (3), characterized in that: A box cover (4) is snap-fitted and mounted on the upper end of the junction box body (1), and a connecting wire (5) is fixedly mounted on the front end of the junction box body (1); A metal spring (6) is fixedly mounted on the inner end of the reinforcement box (2), an arc block (7) is fixedly mounted on the upper end of the metal spring (6), and the arc block (7) is attached to the lower side of the connecting line (5); The heat sink (3) is fixedly mounted on the inner end of the junction box body (1), a hollow groove (14) is provided on the inner end of the heat sink (3), and heat dissipation strips (15) are equidistantly arranged on the lower end of the heat sink (3).

2. A photovoltaic module junction box according to claim 1, characterized in that: A mounting strip (12) is fixedly mounted on the rear end of the reinforcement box (2), and the mounting strip (12) is engaged with the front end of the junction box body (1).

3. A photovoltaic module junction box according to claim 2, characterized in that: A limit card (13) is mounted on the inner end of the installation strip (12), and the limit card (13) is located inside the junction box body (1).

4. A photovoltaic module junction box according to claim 1, characterized in that: A cover plate (8) is mounted on the upper end of the reinforcement box (2), an arc-shaped groove (9) is formed at the inner end of the cover plate (8), and the arc-shaped groove (9) wraps around the outer end of the connecting line (5).

5. The photovoltaic module junction box according to claim 1, characterized in that: The inner ends of the reinforcement box (2) and the junction box body (1) are both threadedly connected with screws (10).

6. A photovoltaic module junction box according to claim 1, characterized in that: The front end of the junction box body (1) is provided with a bayonet (11), and the connecting wire (5) is engaged with the inner end of the bayonet (11).

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