CN108551324B

CN108551324B - Solar photovoltaic high-efficiency integrated junction box

Info

Publication number: CN108551324B
Application number: CN201810625168.XA
Authority: CN
Inventors: 陈荣钦
Original assignee: Shanghai Green Giant Aijue Energy Technology Co ltd
Current assignee: Shanghai Giant Energy Technology Co ltd
Priority date: 2018-06-17
Filing date: 2018-06-17
Publication date: 2020-07-28
Anticipated expiration: 2038-06-17
Also published as: CN108551324A

Abstract

The invention relates to the technical field of solar related equipment, and discloses a solar photovoltaic high-efficiency integrated junction box which comprises a bottom plate, wherein a protective shell is fixedly arranged on the front surface of the bottom plate through a fixing bolt, a movable guide rail is fixedly arranged in the middle of an inner cavity of the protective shell, a conductive block is fixedly arranged on the front surface of the movable guide rail, the bottom of the conductive block is electrically connected with a cable through an insulating fixing buckle, the bottom end of the cable extends to the outside of the protective shell, and a diode is fixedly arranged on the top of the conductive block. This high-efficient integrated terminal box of solar photovoltaic through being provided with two dust removal casees in the outside of protecting sheathing, has both guaranteed the circulation of the inside air of bottom plate, has avoided placing too much structure in protecting sheathing inside again and has increased the problem of this terminal box heat dissipation burden, utilizes radiator fan and conducting block to guarantee the device and stabilizes the heat dissipation simultaneously, has both improved the device's security and has improved the device's practicality again.

Description

Solar photovoltaic high-efficiency integrated junction box

Technical Field

The invention relates to the technical field of solar related equipment, in particular to a solar photovoltaic high-efficiency integrated junction box.

Background

The photovoltaic junction box is a connector between a solar cell array formed by a solar cell module and a solar charging control device, is very important in the composition of the solar cell module, and is mainly used for connecting electric power generated by the solar cell with an external circuit; the information mainly seen in the selection of the photovoltaic junction box is the current magnitude of the component, one is the maximum working current, and the other is the short-circuit current, of course, the maximum current which can be output by the component during the short-circuit current is calculated according to the short-circuit current, the safety coefficient is larger, and the safety coefficient is smaller when the junction box is calculated according to the maximum working current.

The existing photovoltaic junction box can emit a large amount of heat in the process of sending electric energy out, and along with the continuation of the service time, the poor heat dissipation performance of the junction box can bring negative and even fatal influence to the assembly, and even can cause the phenomenon of burning out the assembly. In order to ensure the service life and the electrical safety performance of the assembly, the junction box must have excellent heat dissipation performance, and meanwhile, as the number of the conductive blocks inside the junction box is large, once electric leakage occurs, detection and maintenance are difficult, so that the detection of the photovoltaic junction box is also very important.

Current application number CN201110259776.1 discloses a mounting structure of photovoltaic junction box connecting terminal, including photovoltaic junction box base, connecting terminal assembly and diode and some conventional structures of photovoltaic junction box, possesses the advantages of good heat dissipation, high reliability, etc. Although the invention solves some problems, the following problems still exist when in use and need to be solved: the terminal assembly is firstly fixed on the mounting plate and then is mounted in the base of the photovoltaic junction box through the mounting plate, so that the mounting is complex, the cost is high due to the adoption of the mounting plate, and the heat dissipation performance of the whole photovoltaic junction box is affected due to the fact that the mounting plate occupies a certain convection space, so that the design of the solar photovoltaic high-efficiency integrated junction box is urgently needed.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the solar photovoltaic high-efficiency integrated junction box which has the advantages of good heat dissipation, dust prevention, convenience in detection of electric leakage and the like, and solves the problems that negative and even fatal influences are brought to components when the heat dissipation performance of the junction box is poor and the rapid detection and maintenance are difficult once electric leakage occurs to components in the junction box.

(II) technical scheme

In order to achieve the purposes of good heat dissipation, dust prevention and convenience in electric leakage detection, the invention provides the following technical scheme: a solar photovoltaic high-efficiency integrated junction box comprises a bottom plate, wherein a protective shell is fixedly arranged on the front surface of the bottom plate through a fixing bolt, a movable guide rail is fixedly arranged in the middle of an inner cavity of the protective shell, a conductive block is fixedly arranged on the front surface of the movable guide rail, the bottom of the conductive block is electrically connected with a cable through an insulating fixing buckle, the bottom end of the cable extends to the outside of the protective shell, a diode is fixedly arranged at the top of the conductive block, a first lead is fixedly arranged on the front surface of the diode, the other end of the first lead is movably connected with an insulating block, an electrifying block is fixedly arranged on the front surface of the insulating block, an insulating push rod is fixedly arranged at the top of the electrifying block, the other end of the insulating push rod extends to the outside of the protective shell and is fixedly provided, the other end of the second lead is electrically connected with a warning lamp, a cross rod is fixedly installed in an inner cavity of the protective shell, the outer portion of the cross rod is fixedly connected with the bottom surface of the warning lamp, the front surface of the warning lamp extends to the outer portion of the protective shell, dust removing boxes are fixedly installed at the bottoms of the left side surface and the right side surface of the protective shell, filter screens are fixedly installed in the inner cavities of the dust removing boxes, the side surfaces of the filter screens are fixedly communicated with the side surfaces of the protective shell, slide rails are fixedly installed on the upper surface and the lower surface of the inner cavity of the dust removing boxes, clamping blocks are clamped in the two slide rails, a collecting box is fixedly installed between the two clamping blocks, the side surface of the collecting box close to the protective shell is communicated with the side surface of the filter screens, an air inlet is formed in the, the front of the knocking block is fixedly provided with an adjusting handle, the other end of the adjusting handle extends to the outside of the collecting box, the front of the collecting box is provided with a limiting groove, and the front of the protective shell is fixedly provided with a radiating fin.

Preferably, the number of the fixing bolts is two, and the two fixing bolts are respectively distributed on the left side and the right side of the bottom end of the front face of the bottom plate.

Preferably, the outer part of the cable is fixedly sleeved with a stabilizing sleeve block, and the top surface of the stabilizing sleeve block is fixedly connected with the bottom surface of the protective shell.

Preferably, the middle part of the front surface of the conductive block is fixedly provided with a fixing bolt, and the conductive block is fixedly sleeved with the outside of the movable guide rail through the fixing bolt.

Preferably, the outside movable sleeve of insulating push rod is equipped with connecting spring, connecting spring's both ends respectively with the side fixed connection between circular telegram piece and the protective housing.

Preferably, the fixed cover in outside of dead lever is equipped with the protection piece, the side that the protection shell was kept away from to the protection piece is connected with the inner wall fixed of collecting box.

Preferably, the outside activity cover of dead lever is equipped with buffer spring, buffer spring's both ends respectively with strike the block and keep away from the side of protective housing and the inner wall fixed connection of collecting box.

Preferably, the inner cavity of the protective shell is fixedly provided with clamping rods positioned at two sides of the cable, and the clamping rods are movably sleeved with a cooling fan.

Preferably, the number of the conductive blocks and the number of the warning lamps are five, and the five warning lamps and the five conductive blocks are located on the same vertical line.

Preferably, the left end and the right end of the cross rod are fixedly provided with locking sleeve blocks, and the side surfaces of the locking sleeve blocks are fixedly connected with the inner wall of the protective shell

(III) advantageous effects

Compared with the prior art, the invention provides a solar photovoltaic high-efficiency integrated junction box, which has the following beneficial effects:

1. this high-efficient integrated terminal box of solar photovoltaic through being provided with two dust removal casees in the outside of protecting sheathing, has both guaranteed the circulation of the inside air of bottom plate, has avoided placing too much structure in protecting sheathing inside again and has increased the problem of this terminal box heat dissipation burden, utilizes radiator fan and conducting block to guarantee the device and stabilizes the heat dissipation simultaneously, has both improved the device's security and has improved the device's practicality again.

2. This high-efficient integrated terminal box of solar photovoltaic through being provided with the filter screen in dust removal incasement portion, completely cuts off the outside dust of whole protective housing in the collection box, and it is when the device need clear up the dust, only need remove to adjust the handle and utilize to strike the piece and strike the filter screen surface, collects the dust in the collection box entirely, has avoided the dust to get into the problem that the inner chamber of protective housing leads to the mechanism short circuit, has guaranteed the circulation of the device's inside air current again.

3. This high-efficient integrated terminal box of solar photovoltaic, through the button of pressing different positions, remove when the button is mutually for the diode, first wire, circular telegram piece, second wire and warning light form a series circuit, if do not have connect the cable conductor on the conducting block that corresponds the position, however the warning light is still luminous, then can judge that the electric leakage appears in the conducting block that corresponds the position, thereby the scope of detection has been reduced fast, made things convenient for the staff to maintain the device, the security that has increased the device.

Drawings

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

FIG. 2 is a schematic view of the internal structure of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the interior of the dust box of the present invention;

FIG. 4 is a partial schematic view of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: the device comprises a base plate 1, a protective shell 2, a movable guide rail 3, a diode 4, an insulating fixing buckle 5, a cable 6, a stable sleeve 7, a cross rod 8, a warning lamp 9, a first lead 10, a power-on block 11, an insulating push rod 12, a second lead 13, an insulating block 14, a button 15, a connecting spring 16, a dust removal box 17, a filter screen 18, a collecting box 19, a fixing rod 20, a protective block 21, a knocking block 22, a buffer spring 23, an adjusting handle 24, a slide rail 25, a clamping block 26, an air inlet 27, a fixing bolt 28, a clamping rod 29, a cooling fan 30, a limiting groove 31, a stretching handle 32, a cooling fin 33 and a conductive block 34.

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. 1-5, a solar photovoltaic high-efficiency integrated junction box comprises a bottom plate 1, a protective casing 2 is fixedly mounted on the front surface of the bottom plate 1 through two fixing bolts 28, the number of the fixing bolts 28 is two, and the two fixing bolts 28 are respectively distributed on the left side and the right side of the bottom end of the front surface of the bottom plate 1, the stability of the protective casing 2 mounted on the front surface of the bottom plate 1 is ensured by the two fixing bolts 28, the stability and the normal operation of the device are increased, the practicability of the device is improved, clamping rods 29 positioned on two sides of a cable 6 are fixedly mounted in the inner cavity of the protective casing 2, a heat dissipation fan 30 is movably sleeved outside the clamping rods 29, the heat dissipation effect of the device is increased by the arrangement of the heat dissipation fan 30, the practicability of the device is improved, a movable guide rail 3 is fixedly mounted in the middle part of the, the fixing bolt is fixedly installed in the middle of the front face of the conductive block 34, the conductive block 34 is fixedly sleeved with the outer portion of the movable guide rail 3 through the fixing bolt, the fixing bolt is used for ensuring the stability of the conductive block 34 installed on the guide rail 3, the safety of the device is improved, the bottom of the conductive block 34 is electrically connected with the cable 6 through the insulating fixing buckle 5, the stabilizing sleeve 7 is fixedly sleeved on the outer portion of the cable 6, the top face of the stabilizing sleeve 7 is fixedly connected with the bottom face of the protective shell 2, the influence of traction on the inner mechanism of the protective shell 2 on the outer portion of the cable 6 is reduced by arranging the stabilizing sleeve 7, the safety of the device is improved, the bottom end of the cable 6 extends to the outer portion of the protective shell 2, the diode 4 is fixedly installed at the top of the conductive block 34, the first lead 10 is fixedly installed on the front face of the diode 4, and the locking, the side surface of the locking sleeve block is fixedly connected with the inner wall of the protective shell 2, the other end of the first conducting wire 10 is movably connected with an insulating block 14, the front surface of the insulating block 14 is fixedly provided with an electrifying block 11, the top of the electrifying block 11 is fixedly provided with an insulating push rod 12, the outer part of the insulating push rod 12 is movably sleeved with a connecting spring 16, two ends of the connecting spring 16 are respectively and fixedly connected with the side surface between the electrifying block 11 and the protective shell 2, the connecting spring 16 is utilized to ensure that the insulating block 14 can be quickly restored after pushing a button 15 each time, the detection of the device is convenient, the stability of the device is improved, the other end of the insulating push rod 12 extends to the outer part of the protective shell 2 and is fixedly provided with the button 15, the side surface of the insulating block 14 far away from the first conducting wire 10 is movably connected with a second conducting wire 13, the number of the conducting blocks 34 and the number of, the other end of the second wire 13 is electrically connected with a warning light 9, a cross rod 8 is fixedly installed in an inner cavity of the protective shell 2, the outer portion of the cross rod 8 is fixedly connected with the bottom surface of the warning light 9, the front surface of the warning light 9 extends to the outer portion of the protective shell 2, dust removing boxes 17 are fixedly installed at the bottoms of the left side surface and the right side surface of the protective shell 2, filter screens 18 are fixedly installed in inner cavities of the dust removing boxes 17, the side surfaces of the filter screens 18 are fixedly communicated with the side surfaces of the protective shell 2, slide rails 25 are fixedly installed on the upper surface and the lower surface of the inner cavity of the dust removing boxes 17, clamping blocks 26 are clamped inside the two slide rails 25, collecting boxes 19 are fixedly installed between the two clamping blocks 26, the side surfaces, close to the protective shell 2, of the collecting boxes 19 are mutually communicated with the side surfaces of the filter screens, the two ends of the buffer spring 23 are respectively fixedly connected with the side surface of the knocking block 22 far away from the protective shell 2 and the inner wall of the collecting box 19, the surface of the filter screen 18 is knocked by the knocking block 22, dust is completely collected in the collecting box 19, the problem of mechanism short circuit caused by the dust entering the inner cavity of the protective shell 2 is avoided, the circulation of internal airflow of the device is ensured, the protection block 21 is fixedly sleeved outside the fixing rod 20, the side surface of the protection block 21 far away from the protective shell 2 is fixedly connected with the inner wall of the collecting box 19, the stability of installation of the fixing rod 20 is ensured by the arrangement of the protection block 21, the operability of the device is improved, the knocking block 22 is movably sleeved at one end of the fixing rod 20 close to the protective shell 2, the adjusting handle 24 is fixedly installed on the front surface of the knocking block 22, the other end of the, the front surface of the protective case 2 is fixedly provided with a heat sink 33.

During operation, at first install the device inner structure and normal operating, adjust handle 24 through removing at intervals and utilize to strike piece 22 and strike filter screen 18 surface, collect the dust in collecting box 19 is whole, then utilize tensile handle 32 to take out whole collecting box 19 clearance, the reinstallation is resumeed, if the damage appears in the device simultaneously, through pressing button 15 of different positions, move down mutually when button 15, make the warning light 9 of corresponding position luminous, then can judge that the conducting block 34 of corresponding position appears the electric leakage and finally maintains it fast, can.

In summary, the solar photovoltaic high-efficiency integrated junction box has the advantages that the two dust removal boxes 17 are arranged outside the protective shell 2, so that the circulation of air inside the bottom plate 1 is ensured, the problem that excessive structures are placed inside the protective shell 2 to increase the heat dissipation burden of the junction box is solved, meanwhile, the stable heat dissipation of the device is ensured by the aid of the heat dissipation fan 30 and the conductive blocks 34, and the safety and the practicability of the device are improved; the filter screen 18 is arranged in the dust removal box 17, so that dust outside the whole protective shell 2 is isolated in the collection box 19, and when the device needs to clean the dust, the adjustment handle 24 only needs to be moved to knock the surface of the filter screen 18 by the knocking block 22, so that the dust is completely collected in the collection box 19, the problem of short circuit of a mechanism caused by the fact that the dust enters an inner cavity of the protective shell 2 is avoided, and the circulation of internal airflow of the device is guaranteed; by pressing the buttons 15 at different positions, when the buttons 15 move downwards, the diode 4, the first lead wire 10, the electrifying block 11, the second lead wire 13 and the warning lamp 9 form a series circuit, if the cable 6 is not connected to the conductive block 34 at the corresponding position, but the warning lamp 9 still emits light, the conductive block 34 at the corresponding position can be judged to have electric leakage, so that the detection range is quickly reduced, a worker can conveniently maintain the device, and the safety of the device is improved; the problem of the not good influence that can bring the subassembly negative side even fatal of terminal box heat dispersion and once the terminal box inner member appears the electric leakage, be difficult to quick detection maintenance is solved.

It is noted that, herein, relational terms such as first and second, and the like may be 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.

Claims

1. The utility model provides a high-efficient integrated terminal box of solar photovoltaic, includes bottom plate (1), there is protective housing (2), its characterized in that in the front of bottom plate (1) through fixing bolt (28) fixed mounting: a movable guide rail (3) is fixedly installed in the middle of an inner cavity of the protective shell (2), a conductive block (34) is fixedly installed on the front face of the movable guide rail (3), the bottom of the conductive block (34) is electrically connected with a cable (6) through an insulating fixing buckle (5), clamping rods (29) located on two sides of the cable (6) are fixedly installed in the inner cavity of the protective shell (2), and a radiating fan (30) is movably sleeved outside each clamping rod (29); the bottom end of the cable (6) extends to the outside of the protective shell (2), a diode (4) is fixedly mounted at the top of the conductive block (34), a first lead (10) is fixedly mounted on the front side of the diode (4), the other end of the first lead (10) is movably connected with an insulating block (14), an electrifying block (11) is fixedly mounted on the front side of the insulating block (14), an insulating push rod (12) is fixedly mounted at the top of the electrifying block (11), a connecting spring (16) is movably sleeved outside the insulating push rod (12), and two ends of the connecting spring (16) are respectively fixedly connected with the side face between the electrifying block (11) and the protective shell (2); the other end of the insulating push rod (12) extends to the outside of the protective shell (2) and is fixedly provided with a button (15), the side face of the insulating block (14) far away from the first lead (10) is movably connected with a second lead (13), the other end of the second lead (13) is electrically connected with a warning lamp (9), the inner cavity of the protective shell (2) is fixedly provided with a cross rod (8), the outside of the cross rod (8) is fixedly connected with the bottom face of the warning lamp (9), the front face of the warning lamp (9) extends to the outside of the protective shell (2), the bottom ends of the left side face and the right side face of the protective shell (2) are fixedly provided with a dust removal box (17), the inner cavity of the dust removal box (17) is fixedly provided with a filter screen (18), the side face of the filter screen (18) is fixedly communicated with the side face of the protective shell (2), and the upper and lower, clamping blocks (26) are clamped inside the two slide rails (25), a collecting box (19) is fixedly arranged between the two clamping blocks (26), the side surface of the collecting box (19) close to the protective shell (2) is communicated with the side surface of the filter screen (18), an air inlet (27) is formed in the other side of the collecting box (19), a fixing rod (20) is fixedly installed on the side face, far away from the protective shell (2), of the collecting box (19), a protection block (21) is fixedly sleeved outside the fixed rod (20), the side surface of the protection block (21) far away from the protection shell (2) is fixedly connected with the inner wall of the collection box (19), a buffer spring (23) is movably sleeved outside the fixed rod (20), and two ends of the buffer spring (23) are respectively and fixedly connected with the side surface of the knocking block (22) far away from the protective shell (2) and the inner wall of the collecting box (19); a knocking block (22) is movably sleeved at one end, close to the protective shell (2), of the fixing rod (20), an adjusting handle (24) is fixedly installed on the front face of the knocking block (22), the other end of the adjusting handle (24) extends to the outside of the collecting box (19), a limiting groove (31) is formed in the front face of the collecting box (19), and a radiating fin (33) is fixedly installed on the front face of the protective shell (2); the number of the fixing bolts (28) is two, and the two fixing bolts (28) are respectively distributed on the left side and the right side of the bottom end of the front face of the bottom plate (1); the left end and the right end of the cross rod (8) are fixedly provided with locking sleeve blocks, and the side faces of the locking sleeve blocks are fixedly connected with the inner wall of the protective shell (2).

2. The solar photovoltaic high-efficiency integrated junction box of claim 1, wherein: the outer portion of the cable (6) is fixedly sleeved with a stabilizing sleeve block (7), and the top surface of the stabilizing sleeve block (7) is fixedly connected with the bottom surface of the protective shell (2).

3. The solar photovoltaic high-efficiency integrated junction box of claim 1, wherein: the middle part of the front surface of the conductive block (34) is fixedly provided with a fixing bolt, and the conductive block (34) is fixedly sleeved with the outside of the movable guide rail (3) through the fixing bolt.

4. The solar photovoltaic high-efficiency integrated junction box of claim 1, wherein: the number of the conductive blocks (34) and the number of the warning lamps (9) are five, and the five warning lamps (9) and the five conductive blocks (34) are located on the same vertical line.