阅读说明：本技术 光伏组件用接线盒 (Junction box for photovoltaic module ) 是由 王凯 于 2019-10-11 设计创作，主要内容包括：本发明涉及光伏发电技术领域,具体为一种光伏组件用接线盒,包括上盒体和下盒体,上盒体内部和下盒体内部分别设置有上腔室和下腔室,上盒体底部连通设置有上开口,下盒体顶部连通设置有下开口,上盒体顶部连通设置有散热口,散热口处设置有散热片,还包括罩体,罩体内部设置有空腔,罩体底部连通设置有安装口,罩体通过多组螺栓安装在上盒体顶部,罩体左侧壁和右侧壁分别连通设置有出风口和进风口,进风口处设置有滤网,滤网中部设置有过渡孔,空腔内顶部设置有支撑杆,支撑杆上设置有轴承；还包括两组左扇形板、两组左弹簧、两组左连接杆、左挡板、两组右扇形板、两组右弹簧、两组右连接杆和右挡板,提高散热效果；拆装便捷。(The invention relates to the technical field of photovoltaic power generation, in particular to a junction box for a photovoltaic module, which comprises an upper box body and a lower box body, wherein an upper cavity and a lower cavity are respectively arranged inside the upper box body and inside the lower box body; the heat dissipation device also comprises two groups of left sector plates, two groups of left springs, two groups of left connecting rods, a left baffle, two groups of right sector plates, two groups of right springs, two groups of right connecting rods and a right baffle, so that the heat dissipation effect is improved; the disassembly and the assembly are convenient.)

1. The utility model provides a terminal box for photovoltaic module which characterized in that: comprises an upper box body (1) and a lower box body (2), wherein an upper cavity and a lower cavity are respectively arranged inside the upper box body (1) and inside the lower box body (2), the bottom of the upper box body (1) is communicated with an upper opening, the top of the lower box body (2) is communicated with a lower opening, the top of the upper box body (1) is communicated with a heat dissipation port, the heat dissipation port is provided with a heat dissipation fin (3), the novel multifunctional desk also comprises a cover body (4), a cavity is arranged inside the cover body (4), an installation port is communicated with the bottom of the cover body (4), the cover body (4) is installed at the top, a support shaft (9) is in key connection with the middle part of a bearing (8), the right end of the support shaft (9) penetrates through a transition hole, a mounting disc (10) is arranged at the right end of the support shaft (9), three groups of mounting rods (11) are arranged on the outer side wall of the mounting disc (10) at equal intervals, bristle (12) groups in contact with a filter screen (6) are arranged on the left side wall of each group of mounting rods (11), a first bevel gear (13) is in key connection with the support shaft (9), a door-shaped ring (14) is arranged at the top in a cavity, a motor (15) is arranged on the door-shaped ring (14), a second bevel gear (16) meshed with the first bevel gear (13) is arranged at the output end of the motor (15), a disc (17); still include two sets of left sector plate (19), two sets of left spring (20), two sets of left connecting rod (21), left baffle (22), two sets of right sector plate, two sets of right springs, two sets of right connecting rod and right baffle, box body (2) top is inserted inside supreme box body (1) along the upper shed down, and box body (2) left side wall is provided with two sets of left draw-in grooves down, and left side wall is provided with two sets of left standing grooves in going up box body (1), goes up box body (1) left side wall be provided with two sets of left side wall central zone's in the standing groove two sets of left connecting hole, every group the left end and the right-hand member of left sector plate (19) insert respectively to a set of left side standing groove and a set of inside the left side draw-in groove, every group left connecting rod (21) right-hand member all passes a set of left side connecting hole and a set of left side spring (20) then with a set of left side sector plate (19) are connected, every group The left side wall of the left sector plate (19) is in close contact, the left ends of two groups of left connecting rods (21) are connected with the left baffle plate (22), the right end of the left baffle plate (22) is in contact with the upper box body (1), the right side wall of the lower box body (2) is provided with two groups of right clamping grooves, the right side wall in the upper box body (1) is provided with two groups of right placing grooves, the right side wall of the upper box body (1) is provided with two groups of right connecting holes in the central area of the right side wall in the two groups of right placing grooves, the right end and the left end of each group of right sector plate are respectively inserted into one group of right placing grooves and one group of right clamping grooves, the left end of each group of right connecting rods respectively penetrates through one group of right connecting holes and one group of right springs and then is connected with one group of right sector plates, the right end and the left end of each group of right springs are respectively in close, two sets of right connecting rod right-hand member all with the right baffle is connected to right baffle left end and last box body (1) contact.

2. The junction box for photovoltaic modules according to claim 1, wherein: and a grid plate (23) is arranged at the air outlet.

3. The junction box for photovoltaic modules according to claim 2, wherein: the radiating fins (3) are in a sawtooth shape, and the radiating fins (3) are made of copper materials.

4. The junction box for photovoltaic modules according to claim 3, wherein: still include left pull ring (24) and right pull ring, left baffle (22) left end is provided with left transition ring (25), left pull ring (24) pass left transition ring (25), right baffle right-hand member is provided with right transition ring, right pull ring passes right transition ring.

5. The junction box for photovoltaic modules according to claim 4, wherein: a supporting ring (26) is arranged on the inner side wall of the upper box body (1), and the top end of the lower box body (2) is in contact with the bottom of the supporting ring (26).

6. The junction box for photovoltaic modules according to claim 5, wherein: the top of the cover body (4) is inclined.

7. The junction box for photovoltaic modules according to claim 6, wherein: the upper box body (1), the lower box body (2) and the cover body (4) are all made of plastic materials.

Technical Field

The invention relates to the technical field of photovoltaic power generation, in particular to a junction box for a photovoltaic module.

Background

As is well known, a photovoltaic module junction box is one of important accessories in the solar photovoltaic power generation technology, and plays an important role in protecting a photovoltaic module and improving the reliability of a power generation system. The existing photovoltaic module junction box is always burnt in use, and the situation that a back plate of a photovoltaic module is burnt or broken due to the burning of the junction box is not rare. Because the junction box is internally provided with a protection circuit consisting of a plurality of discrete elements such as diodes and the like for protecting circuits, the discrete elements can generate a large amount of heat in the continuous working process, the space in the junction box is limited, the waterproof and sand-proof performance is considered, the heat is stored in the junction box and is not easy to dissipate, vicious circle is easy to form, the resistance value of the discrete elements is increased, more heat is dissipated, the discrete elements are burnt, the junction box is burnt, and the working reliability of the photovoltaic module is greatly influenced; and current photovoltaic module terminal box adopts the plastics buckle to take place elastic deformation to connect generally, and this kind of mode is simple and convenient, but its plastics buckle probably takes place the harm in the use or transportation, leads to the whole harm that takes place of photovoltaic module terminal box, uses the reliability lower.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the heat dissipation device which is simple in structure, improves the heat dissipation effect and reduces the failure rate; simple structure, the dismouting is convenient, improves the terminal box for photovoltaic module who uses the reliability.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a junction box for a photovoltaic module comprises an upper box body and a lower box body, wherein an upper cavity and a lower cavity are respectively arranged inside the upper box body and inside the lower box body, the bottom of the upper box body is communicated with and provided with an upper opening, the top of the lower box body is communicated with and provided with a lower opening, the top of the upper box body is communicated with and provided with a heat dissipation port, the heat dissipation port is provided with a heat dissipation fin, the junction box also comprises a cover body, the inner part of the cover body is provided with a cavity, the bottom of the cover body is communicated with and provided with a mounting port, the cover body is mounted at the top of the upper box body through a plurality of groups of bolts, the left side wall and the right side wall of the cover body are respectively communicated with and provided with an air outlet and an air inlet, the air inlet is provided with a filter screen, the left side walls of the three groups of mounting rods are provided with bristle groups contacting with the filter screen, a first bevel gear is in key connection with the supporting shaft, a door-shaped ring is arranged at the top in the cavity, a motor is arranged on the door-shaped ring, the output end of the motor is provided with a second bevel gear meshed with the first bevel gear, the left end of the supporting shaft is provided with a disc, and the outer side wall of the disc is equidistantly provided with a plurality of groups of blades; the box body is characterized by further comprising two groups of left sector plates, two groups of left springs, two groups of left connecting rods, a left baffle, two groups of right sector plates, two groups of right springs, two groups of right connecting rods and a right baffle, the top end of the lower box body is inserted into the upper box body along an upper opening, the left side wall of the lower box body is provided with two groups of left clamping grooves, the left side wall of the upper box body is provided with two groups of left connecting holes which are in the central area of the left side wall in the two groups of left clamping grooves, the left end and the right end of each group of left sector plates are respectively inserted into the left placing groove and the left clamping groove, the right end of each group of left connecting rods passes through the left connecting holes and the left springs and then is connected with the left sector plates, the left end and the right end of each group of left springs are respectively in close contact with the left side wall in the left, two sets of left side connecting rod left end all with left baffle is connected to left baffle right-hand member and last box body contact, lower box body right side wall are provided with two sets of right draw-in grooves, go up the box body right side wall and be provided with two sets of right standing grooves, go up the box body right side wall be provided with two sets of right standing groove in the right side wall central zone two sets of right connecting holes, every group right side sector plate's right-hand member and left end insert respectively to a set of right side standing groove and a set of inside the right side draw-in groove, every group right side connecting rod left end all passes a set of right connecting hole and a set of right spring then with a set of right side sector plate is connected, every group right side spring's right-hand member and left end respectively with a set of right side sector plate right side wall in the right standing groove and a set of right side sector plate right side wall in close contact with, two sets of right side.

Preferably, a grid plate is arranged at the air outlet.

Preferably, the radiating fins are saw-toothed, and the radiating fins are made of copper.

Preferably, the pull ring assembly further comprises a left pull ring and a right pull ring, the left end of the left baffle is provided with a left transition ring, the left pull ring penetrates through the left transition ring, the right end of the right baffle is provided with a right transition ring, and the right pull ring penetrates through the right transition ring.

Preferably, the inner side wall of the upper box body is provided with a support ring, and the top end of the lower box body is contacted with the bottom of the support ring.

Preferably, the top of the cover body is inclined.

Preferably, the upper box body, the lower box body and the cover body are made of plastic materials.

(III) advantageous effects

Compared with the prior art, the invention provides the junction box for the photovoltaic module, which has the following beneficial effects:

1. according to the junction box for the photovoltaic module, heat generated inside the upper box body and the lower box body is dissipated along the cooling fins, the cooling fins are in a sawtooth shape, the motor drives the multiple groups of fan blades to cause air flow, forced convection is generated at the cooling fins, the cooling effect on the inside of the upper box body and the inside of the lower box body is improved, the structure is simple, the cooling effect is improved, and the failure rate is reduced;

2. this terminal box for photovoltaic module through the cooperation of two sets of left sector plate, two sets of left springs, two sets of left connecting rods, left baffle, two sets of right sector plate, two sets of right springs, two sets of right connecting rods and right baffle etc. makes and goes up the box body and insert with lower box body and accomplish fixedly promptly to avoided the emergence of the plastics buckle fracture damage condition among the prior art, simple structure, the dismouting is convenient, improves the reliability in utilization.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the cover and bolt;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

fig. 4 is a perspective view of two sets of left connecting rods and left baffle plates.

In the figure: 1. an upper box body; 2. a lower box body; 3. a heat sink; 4. a cover body; 5. a bolt; 6. filtering with a screen; 7. a support bar; 8. a bearing; 9. a support shaft; 10. mounting a disc; 11. mounting a rod; 12. brushing; 13. a first bevel gear; 14. a gate-type ring; 15. a motor; 16. a second bevel gear; 17. a disc; 18. a fan blade; 19. a left sector plate; 20. a left spring; 21. a left connecting rod; 22. a left baffle; 23. a grid plate; 24. a left pull ring; 25. a left transition ring; 26. and (3) supporting the ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a junction box for a photovoltaic module comprises an upper box body 1 and a lower box body 2, wherein the upper box body 1, the lower box body 2 and a cover body 4 are made of plastic materials, the quality of the device is reduced, an upper chamber and a lower chamber are respectively arranged inside the upper box body 1 and the lower box body 2, the bottom of the upper box body 1 is communicated with and provided with an upper opening, the top of the lower box body 2 is communicated with and provided with a lower opening, the top of the upper box body 1 is communicated with and provided with a heat dissipation opening, the heat dissipation opening is provided with a heat dissipation fin 3, the heat dissipation fin 3 is in a zigzag shape, the heat dissipation fin 3 is made of copper materials, the heat dissipation area and the heat conduction effect are increased. The accumulation of impurities on the top of a cover body 4 is reduced, the bottom of the cover body 4 is communicated with an installation port, the cover body 4 is installed on the top of an upper box body 1 through a plurality of groups of bolts 5, the left side wall and the right side wall of the cover body 4 are respectively communicated with an air outlet and an air inlet, the air inlet is provided with a filter screen 6, the middle part of the filter screen 6 is provided with a transition hole, the top in a cavity is provided with a support rod 7, the support rod 7 is provided with a bearing 8, the middle part of the bearing 8 is connected with a support shaft 9 through a key, the right end of the support shaft 9 passes through the transition hole, the right end of the support shaft 9 is provided with an installation disc 10, the outer side wall of the installation disc 10 is equidistantly provided with three groups of installation rods 11, the left side wall of each group of installation rods 11 is provided with a group, a disc 17 is arranged at the left end of the supporting shaft 9, and a plurality of groups of fan blades 18 are arranged on the outer side wall of the disc 17 at equal intervals; the diode, the wiring terminal and the like are arranged at the bottom in the lower box body 2, under the mutual matching of the support rod 7, the bearing 8, the support shaft 9, the first bevel gear 13, the second bevel gear 16, the mounting disc 10, the three groups of mounting rods 11 and the disc 17, the motor 15 rotates to enable the multiple groups of fan blades 18 and the brush bristles 12 to rotate, the multiple groups of fan blades 18 rotate to cause the outside air to flow into the cavity along the filter screen 6 and then flow out along the air outlet, the air outlet is provided with a grating plate 23, the grating plate 23 prevents large wastes from entering the cavity, the heat between the lower box body 2 and the upper box body 1 is dissipated along the radiating fins 3, the flowing air takes away the heat, the diode and wiring terminal combined type dust collector also comprises two groups of left fan-shaped plates 19, two groups of left springs 20, two groups of left connecting rods 21, a left baffle plate 22, two groups of right fan-shaped plates, two, the left side wall of the lower box body 2 is provided with two groups of left clamping grooves, the left side wall in the upper box body 1 is provided with two groups of left placing grooves, the left side wall of the upper box body 1 is provided with two groups of left connecting holes which are in the central area of the left side wall in the two groups of left placing grooves, the left end and the right end of each group of left sector plates 19 are respectively inserted into the left placing grooves and the left clamping grooves, the right end of each group of left connecting rods 21 passes through the left connecting holes and the left springs 20 and then is connected with the left sector plates 19, the left end and the right end of each group of left springs 20 are respectively in close contact with the left side wall in the left placing grooves and the left side wall of the left sector plates 19, the left ends of the left connecting rods 21 are both connected with the left baffle plate 22, the right end of the left baffle plate 22 is in contact with the upper box body 1, the right side wall of the lower box body 2 is provided with two groups of right clamping grooves, the right, the right-hand member and the left end of every group right fan-shaped board insert respectively to a set of right standing groove and a set of right draw-in groove inside, every group right connecting rod left end all passes a set of right connecting hole and a set of right spring then is connected with a set of right fan-shaped board, the right-hand member and the left end of every group right spring respectively with a set of right standing groove in right side wall and a set of right fan-shaped board right side wall in close contact with, two sets of right connecting rod right-hand members all are connected with right baffle to right baffle left end and last box body 1 contact. Two sets of left sector plates 19 and two sets of right sector plates cross-sectional shape all are fan-shaped to two sets of left sector plates 19 and two sets of right sector plates are the symmetry form, and when lower box body 2 and last box body 1 were installed, the box body 2 inserted supreme box body 1 inside down, and upward 1 inside wall of box body was provided with support ring 26, and lower 2 tops of box body and support ring 26 bottom contact. When the top end of the lower box body 2 is contacted with the supporting ring 26, two groups of left placing grooves, two groups of right placing grooves, two groups of left clamping grooves and two groups of right clamping grooves are all positioned on the same horizontal plane, two groups of left sector plates 19 and two groups of right sector plates are respectively moved leftwards and rightwards, two groups of left springs 20 and two groups of right springs are compressed, when the box body is moved to a proper position, under the elastic force of the two groups of left springs 20 and the two groups of right springs, the two groups of left sector plates 19 and two groups of right sector plates are respectively inserted into the two groups of left clamping grooves and the two groups of right clamping grooves, the upper box body 1 and the lower box body 2 are kept relatively static, when the upper box body 1 and the lower box body 2 need to be disassembled, the box body also comprises a left pull ring 24 and a right pull ring, the left end of the left baffle plate 22 is provided with a left transition ring 25, the left end of the left pull ring 24 passes through the left transition ring 25, the right, the left baffle 22 is moved leftwards and the right baffle is moved rightwards, so that the two groups of left fan-shaped plates 19 are separated from the two groups of left clamping grooves and the two groups of right fan-shaped plates are separated from the two groups of right clamping grooves, and then the lower box body 2 is pulled out.

When in use, the diode, the wiring terminal and the like are arranged at the bottom in the lower box body 2, under the mutual matching of the support rod 7, the bearing 8, the support shaft 9, the first bevel gear 13, the second bevel gear 16, the mounting disc 10, the three groups of mounting rods 11 and the disc 17, the motor 15 rotates to enable the multiple groups of fan blades 18 and the brush bristles 12 to rotate, the multiple groups of fan blades 18 rotate to cause the external air to flow into the cavity along the filter screen 6 and then flow out along the air outlet, the grating plate 23 prevents large wastes from entering the cavity, the heat between the lower box body 2 and the upper box body 1 is dissipated along the radiating fins 3, the radiating fins 3 are in a sawtooth shape, the radiating fins 3 are made of copper materials, the flowing air takes away the heat, the cross sections of the two groups of left fan blades 19 and the two groups of right fan blades are in fan shapes, the two groups of left fan blades 19 and the two groups, inserting the lower box body 2 into the upper box body 1, moving the two groups of left sector plates 19 and the two groups of right sector plates to the left and right respectively, compressing the two groups of left springs 20 and the two groups of right springs, inserting the two groups of left sector plates 19 and the two groups of right sector plates into the two groups of left clamping grooves and the two groups of right clamping grooves respectively when the top end of the lower box body 2 contacts with the support ring 26, keeping the upper box body 1 and the lower box body 2 relatively static, hooking the left pull ring 24 and the right pull ring by hands to operate when the left baffle plate 22 and the right baffle plate need to move when the upper box body 1 and the lower box body 2 need to be disassembled, moving the right baffle plate to the right while moving the left baffle plate 22 to the left, separating the two groups of left sector plates 19 from the two groups of left clamping grooves and separating the two groups of right sector plates from the two groups of right clamping grooves, and then the lower box body 2 is pulled out.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

In the description herein, it is to be noted that, unless expressly stated or limited otherwise, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be mechanical or electrical, and may be direct or indirect via an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, it is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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