A snap-on junction box for photovoltaic cell modules

Abstract

The utility model discloses a buckle type photovoltaic cell module junction box, include: main body mechanism, main body mechanism includes box body, the symmetry fixed in the pipe body of box body top and with the pipe body inner chamber intercommunication, install the high -speed fan on the pipe body inner wall, the first U type board fixed on the box body inner wall, the second U type board of sliding setting in the first U type board one side, the first joint fixed on the first U type board and one end stretches out the box body, the second joint fixed on the second U type board and one end stretches out the box body, the spring of connecting the first U type board end and the second U type board end and one end is pasted on the box body inner wall the other end pastes the thermosensitive glass tube of second U type board end part, and the box body adopts the high -strength plastic of insulating corrosion -resistant and is made, is used for installing other components, and the joint place of wire plays the protection function simultaneously, this buckle type photovoltaic cell module junction box has the advantages such as short -circuit automatic opening and high heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell junction box technology, specifically a snap-fit ​​junction box for photovoltaic cell modules. Background Technology

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

[0003] Existing photovoltaic cell junction boxes have the following drawbacks during use: when the current is too high, the junction box is prone to overheating, or even melting and catching fire, and the circuit cannot be disconnected. Therefore, there is room for improvement. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a snap-fit ​​photovoltaic cell module junction box, comprising: a main body, the main body including a box body, a tube body symmetrically fixed to the top of the box body and communicating with the inner cavity of the box body, a high-speed fan installed on the inner wall of the tube body, a first U-shaped plate fixed to the inner wall of the box body, a second U-shaped plate slidably disposed on one side of the first U-shaped plate, a first connector fixed to the first U-shaped plate and extending one end out of the box body, a second connector fixed to the second U-shaped plate and extending one end out of the box body, a spring connecting the ends of the first U-shaped plate and the second U-shaped plate, and a thermal glass tube with one end attached to the inner wall of the box body and the other end attached to the end of the second U-shaped plate.

[0006] Multiple ventilation holes are opened on the outer side of the box, and a first dustproof net is fixed on the inner wall of the ventilation holes.

[0007] In a preferred embodiment, the present invention can be further configured such that: the first U-shaped plate has symmetrical grooves on both sides, and the second U-shaped plate has symmetrical protrusions fixed on the opposite inner surfaces, the protrusions slidingly fitting into the grooves.

[0008] In a preferred embodiment, the present invention can be further configured such that: a support plate is fixed on the inner wall of the box, one end of the thermal glass tube is attached to the support plate, and the other end is attached to the end of the second U-shaped plate.

[0009] In a preferred embodiment, the present invention can be further configured such that: the first connector includes a conductive post fixed to one side of the first U-shaped plate and a first socket fixed to the inner wall of the box and extending out of the box, wherein the conductive post and the first socket are electrically connected by a wire.

[0010] In a preferred embodiment, the present invention can be further configured such that: the second connector includes a conductive sleeve fixed to one side of the second U-shaped plate and a second socket fixed to the inner wall of the box and extending out of the shell, the conductive sleeve and the second socket being electrically connected by a wire, and the conductive post being fitted inside the conductive sleeve.

[0011] In a preferred embodiment, the present invention can be further configured such that a second dustproof net is fixed to the top of the tube.

[0012] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0013] 1. In this utility model, a first U-shaped plate is fixed on the inner wall of the box, and a second U-shaped plate is slidably arranged on one side of the first U-shaped plate. A first connector is installed on the first U-shaped plate, and a second connector is installed on the second U-shaped plate. A support plate is fixed on the inner wall of the box, and a thermosensitive glass tube is arranged between the support plate and the end of the second U-shaped plate. A spring is connected between the ends of the first U-shaped plate and the second U-shaped plate. With the above arrangement, when the wires in the junction box short-circuit and catch fire, the thermosensitive glass tube explodes due to heat. At this time, the second U-shaped plate loses its limit, the spring releases its elastic force, and drives the second U-shaped plate to move to one side, disconnecting the first connector and the second connector, realizing the automatic power-off function of the junction box when short-circuited, effectively increasing the safety performance of the junction box.

[0014] 2. In this utility model, tubes are symmetrically fixed at the top of the box, and high-speed fans are installed on the inner wall of the tubes. At the same time, multiple ventilation holes are opened on the outer side of the box. With this setting, when the high-speed fans are turned on, the hot air in the box is discharged to the outside. Outside air enters the inner cavity of the box through the ventilation holes, forming an air circulation in the inner cavity of the box. This can effectively dissipate the heat inside the junction box, prevent the temperature inside the junction box from getting too high, and further increase the practical performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a top sectional view of the present invention;

[0018] Figure 4 This is a partial exploded view of the structure of this utility model.

[0019] Figure label:

[0020] 100. Main structure; 110. Box body; 111. First dustproof net; 112. Support plate; 120. Tube body; 121. Second dustproof net; 130. High-speed fan; 140. First U-shaped plate; 141. Slide groove; 150. Second U-shaped plate; 151. Protrusion; 160. First connector; 161. Conductive post; 162. First socket; 170. Second connector; 171. Conductive sleeve; 172. Second socket; 180. Spring; 190. Thermosensitive glass tube. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0022] Some embodiments of this utility model are described below with reference to the accompanying drawings.

[0023] Example 1:

[0024] Combination Figure 1-4 As shown, this embodiment provides a snap-fit ​​junction box for photovoltaic cell modules, including: a main body 100.

[0025] The main structure 100 includes a box body 110, a tube body 120 symmetrically fixed to the top of the box body 110 and communicating with the inner cavity of the box body 110, a high-speed fan 130 installed on the inner wall of the tube body 120, a first U-shaped plate 140 fixed to the inner wall of the box body 110, a second U-shaped plate 150 slidably disposed on one side of the first U-shaped plate 140, a first connector 160 fixed to the first U-shaped plate 140 and extending one end out of the box body 110, a second connector 170 fixed to the second U-shaped plate 150 and extending one end out of the box body 110, a spring 180 connecting the ends of the first U-shaped plate 140 and the second U-shaped plate 150, and a thermosensitive glass tube 190 with one end attached to the inner wall of the box body 110 and the other end attached to the end of the second U-shaped plate 150.

[0026] The box 110 is made of high-strength, insulating, and corrosion-resistant plastic. It is used to install other components and also protects the wire joints. Multiple ventilation holes are opened on the outer side of the box 110 to facilitate the entry of outside air into the inner cavity of the box 110. A first dustproof net 111 is fixed on the inner wall of the ventilation holes to prevent dust in the outside air from entering the box 110.

[0027] The tube 120 is connected to the inner cavity of the box 110. The high-speed fan 130 is installed on the inner wall of the tube 120 to exhaust the hot air inside the box 110. Outside air enters the inner cavity of the box 110 through the ventilation hole, forming an air circulation inside the box 110, which can effectively exhaust the heat inside the junction box and prevent the temperature inside the junction box from getting too high. In addition, a second dustproof net 121 is fixed at the top of the tube 120 to prevent outside dust from entering the box 110.

[0028] The first U-shaped plate 140 is fixed at both ends to the inner wall of the box 110 for installing the first connector 160. The second U-shaped plate 150 is slidably disposed on the outside of the first U-shaped plate 140 for installing the second connector 170 and driving the second connector 170 to move. Sliding grooves 141 are symmetrically opened on both sides of the first U-shaped plate 140. Protrusions 151 are symmetrically fixed on the opposite inner side of the second U-shaped plate 150. The protrusions 151 are slidably fitted into the sliding grooves 141 to ensure the stability of the second U-shaped plate 150 when moving.

[0029] The first connector 160 includes a conductive post 161 fixed to one side of the first U-shaped plate 140 and a first socket 162 fixed to the inner wall of the housing 110 and extending out of the housing 110. The conductive post 161 and the first socket 162 are electrically connected by a wire. Meanwhile, the second connector 170 includes a conductive sleeve 171 fixed to one side of the second U-shaped plate 150 and a second socket 172 fixed to the inner wall of the housing 110 and extending out of the housing. The conductive sleeve 171 and the second socket 172 are electrically connected by a wire. Both the first socket 162 and the second socket 172 are used to connect external wires. The conductive post 161 is fitted inside the conductive sleeve 171 to facilitate cable transmission.

[0030] A support plate 112 is fixed on the inner wall of the box 110. One end of the thermosensitive glass tube 190 is attached to the support plate 112, and the other end is attached to the end of the second U-shaped plate 150 to limit the second U-shaped plate 150, so that the conductive sleeve 171 and the conductive post 161 are interlocked. The thermosensitive glass tube 190 is filled with thermosensitive liquid. When the temperature is higher than a certain temperature, it will burst due to heat. At this time, the second U-shaped plate 150 loses its limit. Under the action of the spring 180, the second U-shaped plate 150 is ejected away from the first U-shaped plate 140, thereby disconnecting the conductive post 161 and the conductive sleeve 171, that is, disconnecting the first connector 160 and the second connector 170.

[0031] The working principle and usage process of this utility model are as follows: When in use, the high-speed fan 130 starts, which exhausts the hot air from the box 110 to the outside. Outside air enters the inner cavity of the box 110 through the ventilation holes, forming an air circulation in the inner cavity of the box 110, which can effectively exhaust the heat inside the junction box. At the same time, when a short circuit occurs at the connection between the first connector 160 and the second connector 170, the temperature inside the box 110 rises and exceeds the trigger temperature of the thermistor glass tube 190. The thermistor glass tube 190 explodes and shatters. At this time, the second U-shaped plate 150 loses its limit, the spring 180 releases its elastic force, and drives the second U-shaped plate 150 to move away from the first U-shaped plate 140. The movement of the second U-shaped plate 150 drives the second connector 170 to move, causing the first connector 160 and the second connector 170 to disconnect, thereby realizing the automatic power-off of the junction box.

[0032] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A snap-fit ​​junction box for photovoltaic cell modules, comprising: The main body (100) is characterized in that it includes a box (110), a tube (120) symmetrically fixed to the top of the box (110) and communicating with the inner cavity of the box (110), a high-speed fan (130) installed on the inner wall of the tube (120), a first U-shaped plate (140) fixed to the inner wall of the box (110), a second U-shaped plate (150) slidably disposed on one side of the first U-shaped plate (140), a first connector (160) fixed to the first U-shaped plate (140) and one end extending out of the box (110), a second connector (170) fixed to the second U-shaped plate (150) and one end extending out of the box (110), a spring (180) connecting the end of the first U-shaped plate (140) and the end of the second U-shaped plate (150), and a thermosensitive glass tube (190) with one end attached to the inner wall of the box (110) and the other end attached to the end of the second U-shaped plate (150). The outer side of the box (110) has multiple ventilation holes, and a first dustproof net (111) is fixed on the inner wall of the ventilation holes.

2. The snap-fit ​​junction box for photovoltaic cell modules according to claim 1, characterized in that, The first U-shaped plate (140) has symmetrical grooves (141) on both sides, and the second U-shaped plate (150) has symmetrical protrusions (151) fixed on the opposite inner side, and the protrusions (151) slide and fit into the grooves (141).

3. The snap-fit ​​junction box for photovoltaic cell modules according to claim 1, characterized in that, A support plate (112) is fixed on the inner wall of the box (110). One end of the thermosensitive glass tube (190) is attached to the support plate (112), and the other end is attached to the end of the second U-shaped plate (150).

4. A snap-fit ​​junction box for photovoltaic cell modules according to claim 1, characterized in that, The first connector (160) includes a conductive post (161) fixed to one side of the first U-shaped plate (140) and a first socket (162) fixed to the inner wall of the box (110) and extending out of the box (110). The conductive post (161) and the first socket (162) are electrically connected by wires.

5. A snap-fit ​​junction box for a photovoltaic cell module according to claim 4, characterized in that, The second connector (170) includes a conductive sleeve (171) fixed to one side of the second U-shaped plate (150) and a second socket (172) fixed to the inner wall of the box (110) and extending out of the shell. The conductive sleeve (171) and the second socket (172) are electrically connected by wires, and the conductive post (161) is fitted inside the conductive sleeve (171).

6. A snap-fit ​​junction box for photovoltaic cell modules according to claim 1, characterized in that, A second dustproof net (121) is fixed to the top of the tube (120).

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