Photovoltaic junction box

Abstract

The utility model discloses a photovoltaic junction box, which comprises a photovoltaic junction box main body, diode connecting ends, a cable and a cover body, the diode connecting ends are uniformly arranged at the central position inside the photovoltaic junction box main body, and a first connector and a second connector are respectively arranged outside the photovoltaic junction box main body. One end of the first connector and one end of the second connector are connected with the diode connecting end through cables, and fixing sleeves are arranged at the two ends of one side of the photovoltaic junction box body respectively. The photovoltaic junction box is provided with the photovoltaic junction box main body, the diode connecting end, the cable, the fixing sleeve, the first clamping piece, the second clamping piece, the reset spring, the screw rod, the sealing gasket, the guide rod and the guide sleeve, cables of different specifications can be fixed and supported and limited, so that the cables are not easy to fall off, the stability is better, the sealing performance is better after the cables are fixed, and the service life of the cables is prolonged. And water is not easy to permeate into the photovoltaic junction box main body.

Description

Technical Field

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

[0002] The photovoltaic 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] A photovoltaic junction box generally consists of a junction box body, a diode connection end, cables and connectors. The cable input and cable output of the photovoltaic junction box are generally directly connected to the internal diode connection end through the wiring hole. Under complex working conditions, the wiring hole is prone to water ingress or loosening. For example, a photovoltaic junction box disclosed in patent number CN203260603U has the advantages of good waterproofness and good firmness by providing a sealing sleeve and a positioning sleeve in the wiring hole. However, this structure can only be applied to cables of a single specification. When the cable size changes, it is necessary to replace the sealing sleeve and positioning sleeve of different specifications, which has insufficient applicability. Utility Model Content

[0004] The purpose of the utility model is to provide a photovoltaic junction box to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a photovoltaic junction box, comprising a photovoltaic junction box main body, a diode connection end, a cable and a cover body, the diode connection end is evenly arranged at the central position inside the photovoltaic junction box main body, and the outside of the photovoltaic junction box main body is respectively provided with a first connector and a second connector, one end of the first connector and the second connector are connected to the diode connection end through a cable, two ends of one side of the photovoltaic junction box main body are respectively provided with a fixing sleeve, the cables pass through the inside of the fixing sleeve, and one side of the cable is evenly provided with a first clamping piece through a reset spring, the other side of the cable is provided with a second clamping piece, and a screw is provided on the side of the cable away from the reset spring, one end of the screw is connected to the second clamping piece, one side of the top of the photovoltaic junction box main body is evenly connected to the cover body through a hinge, and the bottom end of the photovoltaic junction box main body is provided with a cooling fan through a frame.

[0006] Preferably, sealing grooves are provided around the top of the photovoltaic junction box body, and sealing strips matching the sealing grooves are provided around the cover body near the photovoltaic junction box body, and the sealing strips are made of silicone material.

[0007] Preferably, heat-conducting fins are evenly distributed on the bottom end of the photovoltaic junction box body, and the heat-conducting fins are all made of copper alloy.

[0008] Preferably, two ends of one side of the photovoltaic junction box body are rotatably connected with a clamping piece via a rotating shaft, and two ends of one side of the cover body are respectively provided with clamping blocks matching with the clamping piece.

[0009] Preferably, guide rods are respectively provided at both ends of the interior of the fixing sleeve, and the ends of the first clamping member and the second clamping member close to the guide rods are both slidably sleeved with the guide rods through the guide sleeves.

[0010] Preferably, sealing pads are provided on one side of the first clamping member and the second clamping member close to the cable, and the first clamping member and the second clamping member tightly wrap the cable.

[0011] Preferably, the inside of each of the clamping blocks is provided with an embedded magnet, and each of the clamping parts is made of iron material.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the photovoltaic junction box is installed with a photovoltaic junction box body, a diode connection end, a cable, a fixing sleeve, a first clamping member, a second clamping member, a reset spring, a screw, a sealing pad, a guide rod and a guide sleeve. The cables are respectively connected to the diode connection end in the photovoltaic junction box body through the fixing sleeve, and the second clamping member is driven to move in the direction of the first clamping member by rotating the screw, and pressure is applied to the cable to clamp it between the first clamping member and the second clamping member. Cables of different specifications can be fixed, and the cables are supported and limited so that they are not easy to fall off and have good stability. At the same time, the first clamping member is always wrapped on one side of the cable under the rebound action of the reset spring, and the first clamping member and the second clamping member are both provided with sealing pads, so that the sealing is better after the cable is fixed, and water is not easy to penetrate into the interior of the photovoltaic junction box body. In addition, when the first clamping member and the second clamping member move, the guide sleeve slides on the guide rod, so that the first clamping member and the second clamping member are not easy to deflect, and it is not easy to produce gaps due to position deviation, thereby further increasing the sealing after connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the unfolded structure of the utility model when viewed from above;

[0014] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixing sleeve of the utility model;

[0016] Figure 4 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0017] In the figure: 1. photovoltaic junction box body; 2. diode connection end; 3. fixing sleeve; 4. cable; 5. first connector; 6. second connector; 7. cover; 8. sealing strip; 9. sealing groove; 10. heat conducting wing; 11. cooling fan; 12. frame; 13. guide sleeve; 14. guide rod; 15. sealing gasket; 16. reset spring; 17. first clamping piece; 18. second clamping piece; 19. screw; 20. block; 21. embedded magnet; 22. clamp; 23. rotating seat. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4 The utility model provides an embodiment: a photovoltaic junction box, comprising a photovoltaic junction box body 1, a diode connection terminal 2, a cable 4 and a cover 7, wherein the diode connection terminal 2 is evenly arranged at the central position inside the photovoltaic junction box body 1, and the outside of the photovoltaic junction box body 1 is respectively provided with a first connector 5 and a second connector 6, one end of the first connector 5 and the second connector 6 are connected to the diode connection terminal 2 through the cable 4, and the two ends of one side of the photovoltaic junction box body 1 are respectively provided with a fixing sleeve 3, and the cables 4 pass through the inside of the fixing sleeve 3;

[0020] The cables 4 on the first connector 5 and the second connector 6 respectively pass through the fixing sleeve 3 and are connected to the terminals on the diode connection end 2 in the photovoltaic junction box body 1;

[0021] A first clamping member 17 is evenly arranged on one side of the cable 4 through a return spring 16, a second clamping member 18 is evenly arranged on the other side of the cable 4, and a screw 19 is evenly arranged on one side of the cable 4 away from the return spring 16, and one end of the screw 19 is evenly connected to the second clamping member 18;

[0022] By rotating the screw 19 to drive the second clamping member 18 to move toward the first clamping member 17, pressure is applied to the cable 4, which is clamped between the first clamping member 17 and the second clamping member 18. Cables 4 of different specifications can be fixed, and the cables 4 are supported and limited to prevent them from falling off easily.

[0023] The first clamping member 17 and the second clamping member 18 are both provided with a sealing pad 15 on one side close to the cable 4, and the first clamping member 17 and the second clamping member 18 tightly wrap the cable 4, so that the sealing is better after the cable 4 is fixed, and water is not easy to penetrate into the photovoltaic junction box body 1;

[0024] The first clamping member 17 is always wrapped around one side of the cable 4 under the rebound effect of the return spring 16, exerting a force on the cable 4 in the direction of the second clamping member 18, thereby improving the tightness of the connection between the first clamping member 17 and the second clamping member 18;

[0025] The two ends of the interior of the fixing sleeve 3 are respectively provided with guide rods 14, and the ends of the first clamping member 17 and the second clamping member 18 close to the guide rods 14 are both slidably sleeved with the guide rods 14 through the guide sleeves 13;

[0026] When the first clamping member 17 and the second clamping member 18 move, the guide sleeve 13 slides on the guide rod 14, so that the first clamping member 17 and the second clamping member 18 are not prone to deflection, and are not prone to gaps due to position deviation, thereby further improving the sealing performance;

[0027] One side of the top of the photovoltaic junction box body 1 is evenly connected with a cover body 7 through a hinge, and a sealing groove 9 is opened around the top of the photovoltaic junction box body 1. The cover body 7 is close to the photovoltaic junction box body 1. The surroundings are provided with sealing strips 8 matching the sealing groove 9, and the sealing strips 8 are made of silicone material;

[0028] After wiring, the cover 7 is connected to the photovoltaic junction box body 1, and the sealing strip 8 is embedded in the corresponding sealing groove 9 to increase the sealing between the cover 7 and the photovoltaic junction box body 1, which is not easy to get water or dust;

[0029] The two ends of one side of the photovoltaic junction box body 1 are rotatably connected with a clamp 22 through a rotating shaft 23, and the two ends of one side of the cover body 7 are respectively provided with a clamp block 20 matching the clamp 22;

[0030] The inside of the clamp block 20 is provided with an embedded magnet 21, and the clamping parts 22 are made of iron material;

[0031] After the cover 7 is connected to the photovoltaic junction box body 1, the clamp 22 is rotated inwardly to be closed, so that the clamp 22 is connected to the clamp block 20 on the cover 7. The clamp block 20 is provided with an embedded magnet 21 inside. The clamp 22 is made of iron material, which increases the connection firmness between the cover 7 and the photovoltaic junction box body 1 and facilitates the opening and closing of the cover 7;

[0032] The bottom end of the photovoltaic junction box body 1 is provided with a heat dissipation fan 11 through a frame 12, and the bottom end of the photovoltaic junction box body 1 is evenly distributed with heat conducting wings 10, and the heat conducting wings 10 are all made of copper alloy;

[0033] The heat in the photovoltaic junction box body 1 is absorbed by the heat-conducting fins 10 and transferred to the top of the cooling fan 11. The cooling fan 11 runs to dissipate the heat, thereby improving the heat dissipation performance of the photovoltaic junction box.

[0034] The specific model and specifications of the cooling fan 11 need to be determined by selection calculation based on the specification parameters of the device, and the selection calculation method is a prior art, so it will not be described in detail.

[0035] Working principle: When the embodiment of the present application is in use, the cables 4 on the first connector 5 and the second connector 6 are respectively connected to the diode connection terminal 2 in the photovoltaic junction box body 1 through the fixing sleeve 3, and the second clamping member 18 is driven to move in the direction of the first clamping member 17 by rotating the screw 19, and pressure is applied to the cable 4 to clamp it between the first clamping member 17 and the second clamping member 18, so that cables 4 of different specifications can be fixed, and the cable 4 is supported and limited so that it is not easy to fall off and has good stability. The first clamping member 17 and the second clamping member 18 are both provided with sealing pads 15, so that the sealing is better after the cable 4 is fixed, and water is not easy to penetrate into the photovoltaic junction box body 1. At the same time, the first clamping member 17 is always wrapped around one side of the cable 4 under the rebound action of the reset spring 16, and a force is applied to the cable 4 in the direction of the second clamping member 18, thereby increasing the space between the first clamping member 17 and the second clamping member 18. The tightness of the connection. In addition, when the first clamping member 17 and the second clamping member 18 move, the guide sleeve 13 slides on the guide rod 14, so that the first clamping member 17 and the second clamping member 18 are not easy to deflect, and it is not easy to produce gaps due to position deviation, which further increases the sealing. After wiring, the cover body 7 is connected to the photovoltaic junction box body 1, and the sealing strip 8 is embedded in the corresponding sealing groove 9. Then the clamp 22 is rotated inward and closed, so that the clamp 22 is connected to the block 20 on the cover body 7. The inside of the block 20 is provided with an embedded magnet 21. The clamp 22 is made of iron material, which increases the connection firmness between the cover body 7 and the photovoltaic junction box body 1 while facilitating the opening and closing of the cover body 7. The heat in the photovoltaic junction box body 1 is absorbed by the heat-conducting fins 10 and transferred to the top of the cooling fan 11. The cooling fan 11 runs to dissipate the heat, thereby improving the heat dissipation performance of the photovoltaic junction box body 1.

Claims

1. A photovoltaic junction box, characterized in that: The photovoltaic junction box comprises a photovoltaic junction box body (1), a diode connection end (2), a cable (4) and a cover (7), wherein the diode connection end (2) is evenly arranged at a central position inside the photovoltaic junction box body (1), and a first connector (5) and a second connector (6) are respectively arranged outside the photovoltaic junction box body (1), one end of each of the first connector (5) and the second connector (6) are connected to the diode connection end (2) via a cable (4), and fixing sleeves (3) are respectively arranged at both ends of one side of the photovoltaic junction box body (1), and each of the cables (4) passes through the fixing sleeve ( 3), and a first clamping member (17) is evenly arranged on one side of the cable (4) through a return spring (16), a second clamping member (18) is evenly arranged on the other side of the cable (4), and a screw (19) is evenly arranged on the side of the cable (4) away from the return spring (16), one end of the screw (19) is connected to the second clamping member (18), one side of the top of the photovoltaic junction box body (1) is evenly connected to a cover body (7) through a hinge, and a cooling fan (11) is evenly arranged on the bottom end of the photovoltaic junction box body (1) through a frame body (12).

2. A photovoltaic junction box according to claim 1, characterized in that: The top of the photovoltaic junction box body (1) is provided with sealing grooves (9) on all sides, and the cover body (7) is provided with sealing strips (8) matching the sealing grooves (9) on all sides on the side close to the photovoltaic junction box body (1), and the sealing strips (8) are made of silicone material.

3. A photovoltaic junction box according to claim 1, characterized in that: Heat-conducting fins (10) are evenly distributed on the bottom end of the photovoltaic junction box body (1), and the heat-conducting fins (10) are all made of copper alloy.

4. A photovoltaic junction box according to claim 1, characterized in that: Two ends of one side of the photovoltaic junction box body (1) are rotatably connected to a clamping piece (22) via a rotating shaft (23), and two ends of one side of the cover body (7) are provided with clamping blocks (20) matching the clamping piece (22).

5. A photovoltaic junction box according to claim 1, characterized in that: Guide rods (14) are respectively arranged at both ends of the interior of the fixing sleeve (3), and the ends of the first clamping member (17) and the second clamping member (18) close to the guide rods (14) are both slidably sleeved with the guide rods (14) via the guide sleeves (13).

6. A photovoltaic junction box according to claim 1, characterized in that: A sealing pad (15) is provided on one side of the first clamping member (17) and the second clamping member (18) close to the cable (4), and the first clamping member (17) and the second clamping member (18) tightly wrap the cable (4).

7. A photovoltaic junction box according to claim 4, characterized in that: The clamping blocks (20) are each provided with an embedded magnet (21) inside, and the clamping parts (22) are each made of iron material.

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