Photovoltaic combiner box with heat dissipation mechanism

Abstract

The utility model relates to photovoltaic combiner box technical field, concretely is a kind of photovoltaic combiner box with heat dissipation mechanism, comprising: box, including combiner box body, the surface of combiner box body is hinged with box door;Heat dissipation mechanism, including first louver grating, heat dissipation hole, support leg and heat dissipation cover.The utility model is provided with first louver grating in the lower surface of combiner box body, the side surface of combiner box body is provided with heat dissipation hole, the fixed connection of combiner box body and support leg, the fixed connection of support leg and mounting plate, the fixed connection of mounting plate and motor, the fixed connection of motor and heat dissipation fan, the fixed connection of combiner box body and heat dissipation cover, the surface of heat dissipation cover is provided with second louver grating, motor drives heat dissipation fan rotation can assist combiner box body heat dissipation, accelerate the heat exchange of air in combiner box body, to improve the heat dissipation efficiency of combiner box body, avoid high temperature to cause component aging acceleration, performance decline.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic combiner box technology, specifically a photovoltaic combiner box with a heat dissipation mechanism. Background Technology

[0002] In a photovoltaic (PV) power generation system, the combiner box is a wiring device that ensures the orderly connection of PV modules and the function of current collection. This device ensures that the circuit can be easily disconnected during PV system maintenance and inspection, and reduces the scope of power outage when the PV system fails. Users can connect a certain number of PV cells of the same specifications in series to form PV strings, and then connect several PV strings in parallel to the PV combiner box. After current collection in the PV combiner box, it is used in conjunction with a controller, DC distribution cabinet, PV inverter, and AC distribution cabinet to form a complete PV power generation system and achieve grid connection.

[0003] However, the existing photovoltaic combiner boxes have a compact internal space, and the heat generated by the components is concentrated. High temperatures can lead to accelerated aging and performance degradation of the components. Utility Model Content

[0004] The purpose of this invention is to provide a photovoltaic combiner box with a heat dissipation mechanism to solve the problems mentioned in the background art, such as the compact internal space of existing photovoltaic combiner boxes, concentrated heat generation of components, and high temperature leading to accelerated aging and performance degradation of components.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a photovoltaic combiner box with a heat dissipation mechanism, comprising:

[0006] The enclosure includes a junction box body, the surface of which is hinged with a door;

[0007] The heat dissipation mechanism includes a first louvered grille, heat dissipation holes, a support leg, and a heat dissipation cover. The first louvered grille is disposed on the bottom surface of the combiner box body. The heat dissipation holes are opened on the side of the combiner box body. The support leg is fixedly connected to the side of the combiner box body. The heat dissipation cover is fixedly connected to the side of the combiner box body. A mounting plate is fixedly connected to the end of the support leg away from the combiner box body. A motor is fixedly connected to the side of the mounting plate away from the support leg. A cooling fan is fixedly connected to the output shaft of the motor. A second louvered grille is disposed on the surface of the heat dissipation cover.

[0008] Preferably, the limiting mechanism includes a mounting base and a fixing block. The mounting base is fixedly connected to the side of the junction box body, the fixing block is fixedly connected to the surface of the box door, a rotating block is hinged to the surface of the mounting base, a first magnetic block is fixedly connected to the surface of the rotating block, and a second magnetic block is fixedly connected to the surface of the fixing block.

[0009] Preferably, the first louvered grille is evenly distributed on the lower surface of the junction box body, and the heat dissipation holes are evenly distributed on both sides of the junction box body.

[0010] Preferably, the support legs are evenly distributed in sixteen groups on both sides of the junction box body, and the mounting plate is fixedly connected to the junction box body through the support legs.

[0011] Preferably, the cooling fan is rotatably connected to the heat sink via a motor, and the heat sink is symmetrically distributed in two groups on both sides of the junction box body.

[0012] Preferably, the rotating block is rotatably connected to the junction box body via a mounting base, and the first magnetic block is completely embedded within the rotating block.

[0013] Preferably, the second magnetic block is fixedly connected to the box door via a fixing block, the second magnetic block is completely embedded in the fixing block, and the first magnetic block and the second magnetic block can attract each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The lower surface of the combiner box body is provided with a first louvered grille, the side of the combiner box body is provided with heat dissipation holes, the combiner box body is fixedly connected to the support leg, the support leg is fixedly connected to the mounting plate, the mounting plate is fixedly connected to the motor, the motor is fixedly connected to the cooling fan, the combiner box body is fixedly connected to the heat sink, and the surface of the heat sink is provided with a second louvered grille. The motor drives the cooling fan to rotate, which can assist the combiner box body in heat dissipation, accelerate the heat exchange of air in the combiner box body, thereby improving the heat dissipation efficiency of the combiner box body and avoiding the accelerated aging and performance degradation of components caused by high temperature.

[0016] 2. Through the fixed connection between the junction box body and the mounting base, the hinge between the mounting base and the rotating block, the fixed connection between the rotating block and the first magnetic block, the fixed connection between the box door and the fixed block, and the fixed connection between the fixed block and the second magnetic block, the box door is rotated 180 degrees to fully open the box door. Then, the rotating block is rotated to make the rotating block in a horizontal state. The first magnetic block and the second magnetic block will attract each other to limit the box door, so that the box door can be stably kept in the open state and will not swing back and forth to hinder the staff from inspecting the junction box body. Attached Figure Description

[0017] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0018] Figure 2 This is a bottom-view perspective view of the structure of this utility model;

[0019] Figure 3 This is a three-dimensional partial sectional view of the heat dissipation mechanism of this utility model;

[0020] Figure 4 This is a partial three-dimensional structural diagram of the cooling fan of this utility model;

[0021] Figure 5 This utility model Figure 1 Enlarged structural diagram at point A;

[0022] Figure 6 This is a partial three-dimensional cross-sectional view of the limiting mechanism of this utility model.

[0023] In the diagram: 1. Combiner box body; 11. Box door; 2. First louvered grille; 21. Heat dissipation hole; 22. Support leg; 23. Mounting plate; 24. Motor; 25. Cooling fan; 26. Heat dissipation cover; 27. Second louvered grille; 3. Mounting base; 31. Rotating block; 32. First magnetic block; 33. Fixing block; 34. Second magnetic block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6 One embodiment provided by this utility model:

[0026] A photovoltaic combiner box with a heat dissipation mechanism includes:

[0027] The enclosure includes the junction box body 1. The junction box body 1 is an existing product and is not considered a technical protection point of this application. It will not be described in detail here. The surface of the junction box body 1 is hinged with a door 11, which is used to cover the junction box body 1.

[0028] The heat dissipation mechanism includes a first louvered grille 2, heat dissipation holes 21, support legs 22, and a heat dissipation shroud 26. The first louvered grille 2 is located on the bottom surface of the junction box body 1. The first louvered grille 2 allows outside cold air to enter, facilitating heat exchange between the air inside the junction box body 1 and the surrounding air, thus dissipating heat. The first louvered grille 2 prevents dust and other debris from directly entering the junction box body 1, protecting components from damage, and also blocks small insects from entering. The heat dissipation holes 21 are located on the side of the junction box body 1 and are used for... Hot air is expelled from the combiner box body 1 to achieve heat dissipation. Support legs 22 are fixedly connected to the side of the combiner box body 1. Support legs 22 support the mounting plate 23 and motor 24, preventing the mounting plate 23 and motor 24 from obstructing the heat dissipation holes 21. The mounting plate 23 and motor 24 are mounted on the combiner box body 1. A heat dissipation cover 26 is fixedly connected to the side of the combiner box body 1. The heat dissipation cover 26 covers the motor 24 and cooling fan 25, protecting them and preventing external dust and other debris from entering through the heat dissipation hole. The heat vent 21 enters the interior of the combiner box body 1 without affecting heat dissipation. A mounting plate 23 is fixedly connected to the end of the support leg 22 furthest from the combiner box body 1. The mounting plate 23 is used to mount the motor 24. The side of the mounting plate 23 furthest from the support leg 22 is also fixedly connected to the motor 24, which drives the cooling fan 25. The motor 24 is controlled by a temperature control switch, activating only at high temperatures to reduce energy consumption and noise. The output shaft of the motor 24 is fixedly connected to the cooling fan 25, which assists in cooling the combiner box body 1 and accelerates heat dissipation. The heat exchange of air inside the junction box 1 improves the heat dissipation efficiency of the junction box body 1, and avoids the accelerated aging and performance degradation of components caused by high temperature. The surface of the heat dissipation cover 26 is provided with a second louvered grille 27. The second louvered grille 27 is used to allow hot air inside the junction box body 1 to be discharged, thereby achieving heat dissipation. The second louvered grille 27 can prevent dust and other debris from directly entering the interior of the junction box body 1, protecting the components from damage. At the same time, it can also block small insects from entering. The motor 24 is an existing product and is not a technical protection point of this application. It will not be described in detail here.

[0029] Furthermore, the limiting mechanism includes a mounting base 3 and a fixing block 33. The mounting base 3 is fixedly connected to the side of the combiner box body 1 and is used to mount the rotating block 31 on the combiner box body 1. The fixing block 33 is fixedly connected to the surface of the box door 11 and is used to fix the second magnetic block 34 on the box door 11. The rotating block 31 is hinged to the surface of the mounting base 3 and is used to drive the first magnetic block 32 to rotate. When the box door 11 is closed, the rotating block 31 will be in a vertical state under its own weight, thereby realizing the storage of the rotating block 31 and the first magnetic block 32 and reducing the size of the device. The first magnetic block 32 is fixedly connected to the surface of the rotating block 31 and the second magnetic block 34 is fixedly connected to the surface of the fixing block 33. The first magnetic block 32 and the second magnetic block 34 are used to attract each other to limit the box door 11, so that the box door 11 can be stably in the open state and will not swing back and forth to hinder the staff from inspecting the combiner box body 1.

[0030] Furthermore, the first louvered grille 2 is evenly distributed on the lower surface of the junction box body 1. The first louvered grille 2 is used for the entry of cold air from the outside, realizing heat exchange of the air inside the junction box body 1 and heat dissipation of the interior of the junction box body 1. The first louvered grille 2 can prevent dust and other debris from directly entering the interior of the junction box body 1, protecting the components from damage, and can also block small insects from entering. The heat dissipation holes 21 are evenly distributed on both sides of the junction box body 1. The heat dissipation holes 21 are used for the exhaust of hot air inside the junction box body 1, realizing heat dissipation.

[0031] Furthermore, the support legs 22 are evenly distributed in sixteen groups on both sides of the junction box body 1. The support legs 22 are used to support the mounting plate 23 and the motor 24, so as to prevent the mounting plate 23 and the motor 24 from obstructing the heat dissipation of the heat dissipation hole 21. At the same time, the mounting plate 23 and the motor 24 are mounted on the junction box body 1. The mounting plate 23 is fixedly connected to the junction box body 1 through the support legs 22. The mounting plate 23 is used to mount the motor 24.

[0032] Furthermore, motor 24 drives cooling fan 25 to rotate. Motor 24 is controlled by a temperature control switch and only starts at high temperatures to reduce energy consumption and noise. Cooling fan 25 is connected to motor 24 and heat sink 26. Cooling fan 25 assists in the heat dissipation of junction box body 1, accelerates the heat exchange of air inside junction box body 1, thereby improving the heat dissipation efficiency of junction box body 1 and avoiding accelerated aging and performance degradation of components due to high temperature. Heat sink 26 is symmetrically distributed in two sets on both sides of junction box body 1. Heat sink 26 covers motor 24 and cooling fan 25 to protect motor 24 and cooling fan 25, while preventing external dust and other debris from entering the interior of junction box body 1 through heat dissipation holes 21 without affecting heat dissipation. Second louvered grille 27 allows hot air inside junction box body 1 to be discharged, achieving heat dissipation. Second louvered grille 27 can prevent dust and other debris from directly entering the interior of junction box body 1, protecting components from damage, and can also block small insects from entering.

[0033] Furthermore, the mounting base 3 is used to mount the rotating block 31 on the junction box body 1. The rotating block 31 is rotatably connected to the junction box body 1 through the mounting base 3. The rotating block 31 is used to drive the first magnetic block 32 to rotate. When the box door 11 is closed, the rotating block 31 will be in a vertical state under its own gravity, thereby realizing the storage of the rotating block 31 and the first magnetic block 32, reducing the size of the device. The first magnetic block 32 is completely embedded in the rotating block 31.

[0034] Furthermore, the fixing block 33 is used to fix the second magnetic block 34 to the box door 11. The second magnetic block 34 is fixedly connected to the box door 11 through the fixing block 33. The second magnetic block 34 is completely embedded in the fixing block 33. The first magnetic block 32 and the second magnetic block 34 can attract each other. The first magnetic block 32 and the second magnetic block 34 are used to attract each other to limit the box door 11, so that the box door 11 can be stably in the open state and will not swing back and forth to hinder the staff from inspecting the junction box body 1.

[0035] Working principle: The motor 24 drives the cooling fan 25 to rotate, which can assist the cooling of the junction box body 1, accelerate the heat exchange of air inside the junction box body 1, thereby improving the cooling efficiency of the junction box body 1 and avoiding the accelerated aging and performance degradation of components caused by high temperature.

[0036] Rotate the box door 11 180 degrees to fully open the box door 11. Then rotate the rotating block 31 to make the rotating block 31 horizontal. The first magnetic block 32 will be attracted together with the second magnetic block 34 to limit the box door 11, so that the box door 11 can be stably kept in the open state and will not swing back and forth to hinder the staff from inspecting the combiner box body 1.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A photovoltaic combiner box with a heat dissipation mechanism, characterized in that, include: The enclosure includes a junction box body (1), and a door (11) is hinged to the surface of the junction box body (1). The heat dissipation mechanism includes a first louvered grille (2), heat dissipation holes (21), support legs (22), and a heat dissipation cover (26). The first louvered grille (2) is located on the bottom surface of the junction box body (1). The heat dissipation holes (21) are opened on the side of the junction box body (1). The support legs (22) are fixedly connected to the side of the junction box body (1). The heat dissipation cover (26) is fixedly connected to the side of the junction box body (1). A mounting plate (23) is fixedly connected to the end of the support legs (22) away from the junction box body (1). A motor (24) is fixedly connected to the side of the mounting plate (23) away from the support legs (22). A cooling fan (25) is fixedly connected to the output shaft of the motor (24). A second louvered grille (27) is provided on the surface of the heat dissipation cover (26).

2. A photovoltaic combiner box with a heat dissipation mechanism according to claim 1, characterized in that: The limiting mechanism includes a mounting base (3) and a fixing block (33). The mounting base (3) is fixedly connected to the side of the junction box body (1). The fixing block (33) is fixedly connected to the surface of the box door (11). A rotating block (31) is hinged to the surface of the mounting base (3). A first magnetic block (32) is fixedly connected to the surface of the rotating block (31). A second magnetic block (34) is fixedly connected to the surface of the fixing block (33).

3. A photovoltaic combiner box with a heat dissipation mechanism according to claim 1, characterized in that: The first louvered grille (2) is evenly distributed on the lower surface of the junction box body (1), and the heat dissipation holes (21) are evenly distributed on both sides of the junction box body (1).

4. A photovoltaic combiner box with a heat dissipation mechanism according to claim 1, characterized in that: The support legs (22) are evenly distributed in sixteen groups on both sides of the junction box body (1), and the mounting plate (23) is fixedly connected to the junction box body (1) through the support legs (22).

5. A photovoltaic combiner box with a heat dissipation mechanism according to claim 1, characterized in that: The cooling fan (25) is rotatably connected to the heat sink (26) via the motor (24), and the heat sink (26) is symmetrically distributed in two groups on both sides of the junction box body (1).

6. A photovoltaic combiner box with a heat dissipation mechanism according to claim 2, characterized in that: The rotating block (31) is rotatably connected to the junction box body (1) via the mounting base (3), and the first magnetic block (32) is completely embedded in the rotating block (31).

7. A photovoltaic combiner box with a heat dissipation mechanism according to claim 2, characterized in that: The second magnetic block (34) is fixedly connected to the box door (11) through the fixing block (33). The second magnetic block (34) is completely embedded in the fixing block (33). The first magnetic block (32) and the second magnetic block (34) can attract each other.

Images