Photovoltaic junction box and installation method thereof

Abstract

The invention relates to the technical field of photovoltaic junction boxes, in particular to a photovoltaic junction box and an installation method of the photovoltaic junction box, and the photovoltaic junction box comprises a junction box assembly and a supporting assembly, the bottom end of the junction box assembly is connected with the supporting assembly, and the junction box assembly comprises a box body, a sealing cover and a locking cover. Two relatively parallel mounting sleeves are fixedly inserted into one side of the box body, rubber sleeves for protecting photovoltaic cables are fixedly adhered to the inner walls of the mounting sleeves, locking covers are in threaded connection with one ends, far away from the box body, of the mounting sleeves, the locking covers sleeve the photovoltaic cables, and mounting cavities for mounting conductive blocks and diodes are formed in the box body. The inserting rod at the bottom end of the clamping seat is inserted into the inserting opening in the top end of the positioning seat, the knob is twisted to drive the lead screw to rotate, and the lead screw pushes the push block towards the inserting rod until one end of the inserting piece penetrates through the inner wall of one side of the cavity to be connected with the inserting rod in a clamped mode, so that the stability of the photovoltaic cable in the box body can be improved, and meanwhile the heat dissipation performance of the photovoltaic cable can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic junction boxes, and in particular to a photovoltaic junction box and a method for installing the photovoltaic junction box. Background Art

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

[0003] The photovoltaic junction box generates heat during use. The photovoltaic junction box in the prior art usually relies on self-heating, and the heat dissipation performance of the photovoltaic junction box is poor. At the same time, when the photovoltaic cable is installed, one end usually passes through the photovoltaic junction box and is connected to the conductive block by bolts. When the bolts are loose, one end of the photovoltaic cable is easy to fall off from the photovoltaic junction box, and the firmness is poor, and thus cannot meet the use requirements.

[0004] To this end, we propose a photovoltaic junction box and an installation method of the photovoltaic junction box. Summary of the invention

[0005] The main purpose of the present invention is to provide a photovoltaic junction box and an installation method of a photovoltaic junction box, wherein the groove at the bottom of the box body is stuck on the first heat conducting plate at the top of the base, and one side of the first heat conducting plate is in contact with one side of the second heat conducting plate embedded in the upper end face of the base, and the first heat conducting plate and the second heat conducting plate can conduct the heat in the box body to the heat dissipation cavity, and dissipate the heat through the heat sink, and at the same time, the fan located on the vertical plate blows air toward the heat dissipation cavity and the heat sink, so as to further improve the heat dissipation efficiency of the box body, enter the second arc groove located on the positioning seat of the photovoltaic cable in the box body, and then buckle the card seat on the positioning seat, and the plug rod at the bottom of the card seat is inserted into the socket located at the top of the positioning seat, and then the knob is turned to drive the screw rod to rotate, and the screw rod pushes the push block in the direction of the plug rod until one end of the plug passes through the inner wall of one side of the cavity and is engaged with the plug rod; thereby, the stability of the photovoltaic cable in the box body can be improved, and the problems in the background technology can be effectively solved.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A photovoltaic junction box, comprising a junction box assembly and a support assembly, wherein the bottom end of the junction box assembly is connected to the support assembly, and the junction box assembly comprises a box body, a sealing cover and a locking cover, wherein the box body is a horizontally arranged rectangular body structure, a sealing cover is buckled on the top end of the box body, a buffer pad is fixedly connected to the center of the upper end surface of the sealing cover, a protective shell is fixedly glued to the top end of the buffer pad, two relatively parallel installation sleeves are fixedly plugged on one side of the box body, a rubber sleeve for protecting a photovoltaic cable is fixedly glued to the inner wall of the installation sleeve, a locking cover is threadedly connected to one end of the installation sleeve away from the box body, and the locking cover is sleeved on the photovoltaic cable;

[0008] The box body is provided with an installation cavity for installing a conductive block and a diode, the inner wall of the bottom end of the installation cavity is provided with an opening, a positioning seat is installed on the inner wall of the installation cavity close to one end of the installation sleeve, and second mounting plates are fixedly connected to the box body on both sides of the positioning seat, and the second mounting plate is fixedly connected to the box body through a third bolt, and a clamping seat adapted to the positioning seat is installed on the inner wall of the sealing cover close to one end of the installation sleeve, and the clamping seat is connected to the positioning seat, and an embedding groove for installing the clamping seat is provided on the inner wall of one side of the sealing cover close to the box body, and through holes are provided on the inner walls at both ends of the embedding groove for threaded columns to pass through, and the first mounting plates for installing the threaded columns are fixedly connected at both ends of the clamping seat away from one end of the positioning seat;

[0009] A photovoltaic cable is passed between the card seat and the positioning seat, a first arc groove adapted to the photovoltaic cable is provided on the inner wall at the bottom end of the card seat, a second arc groove adapted to the photovoltaic cable is provided on the top end of the positioning seat, a limiting groove is also provided on the inner wall at the bottom end of the second arc groove for a photovoltaic cable with a small diameter to pass through, and the first arc groove, the second arc groove and the inner wall of the limiting groove are all fixedly glued with anti-slip sleeves;

[0010] The bottom end of the card seat is located on both sides of the first arc groove and fixedly plugged with two oppositely arranged plug rods, the top of the positioning seat corresponding to the plug rod is provided with a socket for accommodating the plug rod, and the two ends of the positioning seat corresponding to the socket are provided with two sets of oppositely arranged locking components, and the locking components include a push block and a screw rod;

[0011] The support assembly includes a base, a heat dissipation mechanism, a vertical plate, a heat-conducting assembly, a mounting ear, a second heat-conducting plate, a heat sink, a limit plate and a first heat-conducting plate. The base is a horizontally arranged rectangular structure. The second heat-conducting plate is fixedly inlaid at the center of the upper end surface of the base. Heat-conducting assemblies are installed at both ends of the upper end surface of the base. Two groups of heat-conducting assemblies are arranged opposite to each other. The junction box assembly is located between the two groups of heat-conducting assemblies. The heat-conducting assembly includes a side plate and a heat-conducting fin.

[0012] The bottom end of the box body is provided with a groove adapted to the first heat conducting plate, both ends of the first heat conducting plate are fixedly connected to the limit plate by second bolts, and the limit plate is fixedly connected to the lower parts of both sides of the box body by fifth bolts.

[0013] Specifically, the lower parts of both ends of the sealing cover are fixedly connected with first buckle plates, the upper parts of both ends of the box body are fixedly connected with second buckle plates, the first buckle plates are buckled on the second buckle plates, and the first buckle plates and the second buckle plates are fixedly connected by first bolts.

[0014] Specifically, the first mounting plates are provided in multiple pieces on the same horizontal line, the threaded column passes through the through hole at one end away from the first mounting plate and is threadedly connected to the nut, and the threaded column, through hole and nut are provided in multiple groups.

[0015] Specifically, the bottom end of the side panel is vertically connected to the upper end surface of the base, one side of the side panel is in contact with one side of the box body, a plurality of equidistantly arranged heat conducting plates are vertically welded to the side of the side panel away from the box body, and the top end of the side panel is fixedly connected to one end of the box body by a fourth bolt.

[0016] Specifically, mounting ears are fixedly connected at the center of the lower parts of both ends of the base, an anti-skid pad is fixedly glued to the bottom end of the base, and a heat dissipation cavity is provided inside the base.

[0017] Specifically, a plurality of heat sinks arranged at equal distances are fixedly connected to the inner wall at the top of the heat dissipation cavity, and a heat dissipation mechanism is located in the center of one end of the heat dissipation cavity, and the heat dissipation mechanism includes a vertical plate and a fan.

[0018] Specifically, a mounting hole for mounting a fan is provided on one side of the vertical plate, the mounting hole is communicated with the heat dissipation cavity, and a power supply electrically connected to the fan is provided inside the vertical plate.

[0019] By adopting the above technical solution,

[0020] Specifically, the upper part of the positioning seat is located on both sides of the socket and has cavities for installing the locking assembly. The push block is located in the cavity. The push block is provided with a plug-in that passes through the inner wall of one side of the cavity on the side close to the socket. The end of the plug-in away from the push block is clamped with the plug rod. The push block is rotatably connected to the side away from the plug-in. The end of the screw rod away from the push block passes through the inner wall of the other side of the cavity and is fixedly connected to the knob.

[0021] A photovoltaic junction box and a method for installing the photovoltaic junction box, comprising the following steps:

[0022] S1. First, place the box body on the top of the support assembly, and insert one end of the photovoltaic cable through the locking cover and the installation sleeve in sequence into the box body for installation. The rubber sleeve in the installation sleeve is placed on the photovoltaic cable, and the locking cover is threadedly connected with the installation sleeve to enter the second arc groove of the photovoltaic cable on the positioning seat in the box body. Then, the card seat is buckled on the positioning seat, and the plug rod at the bottom of the card seat is inserted into the socket at the top of the positioning seat. Then, the knob is turned to drive the screw rod to rotate, and the screw rod pushes the push block toward the direction of the plug rod until one end of the plug passes through the inner wall of one side of the cavity and is engaged with the plug rod;

[0023] Then, the sealing cover is buckled on the top of the box body from top to bottom, the threaded columns at both ends of the card seat pass through the through holes on the sealing cover, and then the nut is threadedly connected with the top of the threaded column, and then the sealing cover and the box body are fixedly connected by the first bolt;

[0024] S2, the box body is located between the two sets of heat-conducting components, the bottom end of the side plate is vertically connected to the upper end surface of the base, one side of the side plate is in contact with one side of the box body, and a plurality of heat-conducting sheets arranged equidistantly are vertically welded to the side of the side plate away from the box body. The side plate and the heat-conducting sheets can conduct heat out of the box body, and the top end of the side plate is fixedly connected to one end of the box body by a fourth bolt, so that the box body can be tightly connected to the top end of the base;

[0025] S3. The groove at the bottom end of the box body is stuck on the first heat conducting plate at the top end of the base, and one side of the first heat conducting plate is in contact with one side of the second heat conducting plate embedded in the upper end surface of the base. The first heat conducting plate and the second heat conducting plate can conduct the heat in the box body to the heat dissipation cavity, and dissipate the heat through the heat sink. At the same time, the fan located on the vertical plate blows air toward the heat dissipation cavity and the heat sink.

[0026] Beneficial effects of the present invention:

[0027] (1) The photovoltaic junction box and the installation method of the photovoltaic junction box described in the present invention, the side plate and the heat conductive sheet can conduct the heat in the box body to facilitate the heat dissipation of the box body, the top of the side plate is fixedly connected to one end of the box body by a fourth bolt, so that the box body can be tightly connected to the top of the base; the groove at the bottom of the box body is clamped on the first heat conductive plate at the top of the base, one side of the first heat conductive plate is in contact with one side of the second heat conductive plate embedded in the upper end surface of the base, the first heat conductive plate and the second heat conductive plate can conduct the heat in the box body to the heat dissipation cavity, and the heat is dissipated through the heat dissipation sheet, and the fan located on the vertical plate blows air toward the heat dissipation cavity and the heat dissipation sheet, so as to further improve the heat dissipation efficiency of the box body;

[0028] (2) A photovoltaic junction box and a method for installing a photovoltaic junction box described in the present invention, one end of the photovoltaic cable is sequentially inserted through the locking cover and the installation sleeve into the box body for installation, the rubber sleeve in the installation sleeve is placed on the photovoltaic cable, the locking cover is threadedly connected with the installation sleeve, and enters the second arc groove of the photovoltaic cable on the positioning seat in the box body, and then the card seat is buckled on the positioning seat, the plug rod at the bottom end of the card seat is inserted into the socket at the top end of the positioning seat, and then the knob is turned to drive the screw rod to rotate, and the screw rod pushes the push block in the direction of the plug rod until one end of the plug passes through the inner wall of one side of the cavity and is engaged with the plug rod; thereby, the stability of the photovoltaic cable in the box body can be improved;

[0029] The sealing cover is buckled onto the top of the box body from top to bottom, the threaded columns at both ends of the base pass through the through holes on the sealing cover, and then the nut is threadedly connected to the top of the threaded column, and then the sealing cover and the box body are fixedly connected by the first bolt to complete the installation, which has the advantage of simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 A three-dimensional diagram of a junction box assembly of the present invention;

[0033] Figure 3 is a three-dimensional diagram of a first heat conducting plate of the present invention;

[0034] Figure 4 It is a three-dimensional diagram of the heat dissipation mechanism of the present invention;

[0035] Figure 5 It is a schematic diagram of the internal structure of the box body of the present invention;

[0036] Figure 6 It is a schematic diagram of the internal structure of the sealing cover of the present invention;

[0037] Figure 7 It is a schematic diagram of the internal structure of the positioning seat of the present invention;

[0038] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle;

[0039] Fig. 9 It is a schematic diagram of the card holder structure of the present invention;

[0040] In the figure: 1, junction box assembly; 2, support assembly; 3, base; 4, heat dissipation mechanism; 5, vertical plate; 6, heat conduction assembly; 7, mounting ear; 8, side plate; 9, heat conduction sheet; 10, box body; 11, sealing cover; 12, locking cover; 13, nut; 14, buffer pad; 15, protective shell; 16, first bolt; 17, groove; 18, mounting sleeve; 19, rubber sleeve; 20, first buckle plate; 21, second buckle plate; 22, limit plate; 23, second bolt; 24, first heat conduction plate ; 25. Second heat conduction plate; 26. Heat dissipation cavity; 27. Heat sink; 28. Cavity; 29. ​​Push block; 30. Mounting cavity; 31. Opening; 32. Screw rod; 33. Embedding groove; 34. Holder; 35. First mounting plate; 36. Third bolt; 37. Positioning seat; 38. Second mounting plate; 39. Through hole; 40. Threaded column; 41. First arc groove; 42. Anti-slip sleeve; 43. Second arc groove; 44. Limiting groove; 45. Locking assembly; 46. Socket; 47. Insert rod. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0042] As an embodiment of the present invention, Figure 1-Figure 9 As shown, a photovoltaic junction box described in the present invention comprises a junction box assembly 1 and a support assembly 2, wherein the bottom end of the junction box assembly 1 is connected to the support assembly 2, and the junction box assembly 1 comprises a box body 10, a sealing cover 11 and a locking cover 12, wherein the box body 10 is a horizontally arranged rectangular body structure, and the sealing cover 11 is buckled on the top of the box body 10, and a buffer pad 14 is fixedly connected at the center of the upper end surface of the sealing cover 11, and a protective shell 15 is fixedly glued to the top of the buffer pad 14, and two relatively parallel mounting sleeves 18 are fixedly plugged on one side of the box body 10, and a rubber sleeve 19 for protecting the photovoltaic cable is fixedly glued to the inner wall of the mounting sleeve 18, and the locking cover 12 is threadedly connected to the end of the mounting sleeve 18 away from the box body 10, and the locking cover 12 is sleeved on the photovoltaic cable;

[0043] The box body 10 is provided with an installation cavity 30 for installing a conductive block and a diode, and an opening 31 is provided on the inner wall of the bottom end of the installation cavity 30. A positioning seat 37 is installed on the inner wall of the installation cavity 30 near the installation sleeve 18. Second mounting plates 38 are fixedly connected to both sides of the positioning seat 37. The second mounting plate 38 is fixedly connected to the box body 10 through a third bolt 36. A clamping seat 34 adapted to the positioning seat 37 is installed on the inner wall of the sealing cover 11 near the installation sleeve 18. The clamping seat 34 is connected to the positioning seat 37. An embedding groove 33 for installing the clamping seat 34 is provided on the inner wall of the sealing cover 11 near the box body 10. Through holes 39 are provided on the inner walls at both ends of the embedding groove 33 for the threaded column 40 to pass through. Both ends of the clamping seat 34 are fixedly connected to the first mounting plate 35 for installing the threaded column 40.

[0044] A photovoltaic cable is passed between the clamping seat 34 and the positioning seat 37. A first arc groove 41 adapted to the photovoltaic cable is provided on the inner wall at the bottom end of the clamping seat 34. A second arc groove 43 adapted to the photovoltaic cable is provided on the top end of the positioning seat 37. A limiting groove 44 for a photovoltaic cable with a small diameter to pass through is also provided on the inner wall at the bottom end of the second arc groove 43. The first arc groove 41, the second arc groove 43 and the inner wall of the limiting groove 44 are all fixedly glued with an anti-slip sleeve 42;

[0045] The bottom end of the card seat 34 is located at both sides of the first arc groove 41 and fixedly connected with two oppositely arranged plug rods 47. The top of the positioning seat 37 is provided with a socket 46 for accommodating the plug rod 47 at a position corresponding to the plug rod 47. Two sets of oppositely arranged locking components 45 are provided at positions corresponding to the sockets 46 at both ends of the positioning seat 37. The locking components 45 include a push block 29 and a screw rod 32.

[0046] The support assembly 2 includes a base 3, a heat dissipation mechanism 4, a vertical plate 5, a heat conducting assembly 6, a mounting ear 7, a second heat conducting plate 25, a heat sink 27, a limit plate 22 and a first heat conducting plate 24. The base 3 is a horizontally arranged rectangular structure. The second heat conducting plate 25 is fixedly inlaid at the center of the upper end surface of the base 3. Heat conducting assemblies 6 are installed at both ends of the upper end surface of the base 3. Two groups of heat conducting assemblies 6 are arranged opposite to each other. The junction box assembly 1 is located between the two groups of heat conducting assemblies 6. The heat conducting assembly 6 includes a side plate 8 and a heat conducting sheet 9.

[0047] The bottom end of the box body 10 is provided with a groove 17 adapted to the first heat conducting plate 24. Both ends of the first heat conducting plate 24 are fixedly connected to the limit plates 22 by second bolts 23. The limit plates 22 are fixedly connected to the lower parts of both sides of the box body 1 by fifth bolts.

[0048] The present invention also includes that the lower parts of both ends of the sealing cover 11 are fixedly connected with first buckle plates 20, and the upper parts of both ends of the box body 10 are fixedly connected with second buckle plates 21, the first buckle plates 20 are buckled on the second buckle plates 21, and the first buckle plates 20 and the second buckle plates 21 are fixedly connected by first bolts 16.

[0049] The present invention also includes that the first mounting plate 35 is provided with multiple pieces on the same horizontal line, the threaded column 40 is threadedly connected to the nut 13 through the through hole 39 at one end away from the first mounting plate 35, and the threaded column 40, the through hole 39 and the nut 13 are provided in multiple groups.

[0050] The present invention also includes that the bottom end of the side panel 8 is vertically connected to the upper end surface of the base 3, one side of the side panel 8 is in contact with one side of the box body 10, a plurality of equidistantly arranged heat conducting plates 9 are vertically welded to the side of the side panel 8 away from the box body 10, and the top end of the side panel 8 is fixedly connected to one end of the box body 10 by a fourth bolt.

[0051] The present invention also includes that mounting ears 7 are fixedly connected at the center of the lower parts of both ends of the base 3, an anti-skid pad is fixedly glued to the bottom end of the base 3, and a heat dissipation cavity 26 is provided inside the base 3.

[0052] The present invention also includes that a plurality of heat sinks 27 arranged at equal distances are fixedly connected to the inner wall at the top of the heat dissipation cavity 26, and a heat dissipation mechanism 4 is located in the center of one end of the heat dissipation cavity 26, and the heat dissipation mechanism 4 includes a vertical plate 5 and a fan.

[0053] The present invention also includes that a mounting hole for mounting a fan is provided on one side of the vertical plate 5 , the mounting hole is communicated with the heat dissipation cavity 26 , and a power supply electrically connected to the fan is provided inside the vertical plate 5 .

[0054] The present invention also includes that the upper part of the positioning seat 37 is located on both sides of the socket 46 and has a cavity 28 for installing the locking assembly 45, the push block 29 is located in the cavity 28, and the push block 29 is provided with a plug-in that passes through the inner wall of one side of the cavity 28 on the side close to the socket 46, and the end of the plug-in away from the push block 29 is clamped with the insertion rod 47, and the push block 29 is rotatably connected to the side away from the plug-in with a screw rod 32, and the end of the screw rod 32 away from the push block 29 passes through the inner wall of the other side of the cavity 28 and is fixedly connected to the knob.

[0055] A photovoltaic junction box and a method for installing the photovoltaic junction box, comprising the following steps:

[0056] S1. First, place the box body 10 on the top of the support assembly 2, and insert one end of the photovoltaic cable through the locking cover 12 and the installation sleeve 18 in sequence into the box body 10 for installation. The rubber sleeve 19 in the installation sleeve 18 is placed on the photovoltaic cable. The locking cover 12 is threadedly connected with the installation sleeve 18 and enters the second arc groove 43 of the photovoltaic cable in the box body 10 on the positioning seat 37. Then, the card seat 34 is buckled on the positioning seat 37, and the plug rod 47 at the bottom end of the card seat 34 is inserted into the socket 46 at the top end of the positioning seat 37. Then, the knob is turned to drive the screw rod 32 to rotate, and the screw rod 32 pushes the push block 39 in the direction of the plug rod 47 until one end of the plug passes through the inner wall of one side of the cavity 28 and is engaged with the plug rod 47;

[0057] Then, the sealing cover 11 is buckled onto the top of the box body 10 from top to bottom, the threaded columns 40 at both ends of the holder 34 pass through the through holes 39 on the sealing cover 11, and then the nut 13 is threadedly connected to the top of the threaded column 40, and then the sealing cover 11 and the box body 10 are fixedly connected by the first bolt 16;

[0058] S2, the box body 10 is located between the two groups of heat-conducting components 6, the bottom end of the side plate 8 is vertically connected to the upper end surface of the base 3, one side of the side plate 8 is in contact with one side of the box body 10, and a plurality of heat-conducting sheets 9 arranged equidistantly are vertically welded to the side of the side plate 8 away from the box body 10. The side plate 8 and the heat-conducting sheets 9 can conduct heat out of the box body 10, and the top end of the side plate 8 is fixedly connected to one end of the box body 10 by a fourth bolt, so that the box body 10 can be tightly connected to the top end of the base 3;

[0059] S3. The groove 17 at the bottom end of the box body 10 is stuck on the first heat conducting plate 24 at the top end of the base 3. One side of the first heat conducting plate 24 is in contact with one side of the second heat conducting plate 25 embedded in the upper end surface of the base 3. The first heat conducting plate 24 and the second heat conducting plate 25 can conduct the heat in the box body 10 to the heat dissipation cavity 26, and dissipate the heat through the heat sink 27. At the same time, the fan located on the vertical plate 5 blows air toward the heat dissipation cavity 26 and the heat sink 27.

[0060] When the present invention is in use: the box body 10 is located between the two groups of heat-conducting components 6, the bottom end of the side plate 8 is vertically connected to the upper end surface of the base 3, one side of the side plate 8 is in contact with one side of the box body 10, and a plurality of equidistantly arranged heat-conducting sheets 9 are vertically welded to the side of the side plate 8 away from the box body 10, the side plate 8 and the heat-conducting sheets 9 can export the heat in the box body 10, and the top of the side plate 8 is fixedly connected to one end of the box body 10 by a fourth bolt, so that the box body 10 can be tightly connected to the top of the base 3; the groove 17 at the bottom end of the box body 10 is stuck on the first heat-conducting plate 24 at the top of the base 3, and one side of the first heat-conducting plate 24 is in contact with one side of the second heat-conducting plate 25 embedded in the upper end surface of the base 3, and the first heat-conducting plate 24 and the second heat-conducting plate 25 can export the heat in the box body 10 to the heat dissipation cavity 26, and dissipate heat through the heat dissipation sheet 27, and at the same time, the fan located on the vertical plate 5 blows air toward the heat dissipation cavity 26 and the heat dissipation sheet 27, so as to further improve the heat dissipation efficiency of the box body 10;

[0061] Insert one end of the photovoltaic cable through the locking cover 12 and the installation sleeve 18 in sequence into the box body 10 for installation. The rubber sleeve 19 in the installation sleeve 18 is placed on the photovoltaic cable. The locking cover 12 is threadedly connected with the installation sleeve 18 and enters the second arc groove 43 of the photovoltaic cable in the box body 10 on the positioning seat 37. Then, the card seat 34 is buckled on the positioning seat 37. The insertion rod 47 at the bottom end of the card seat 34 is inserted into the socket 46 at the top end of the positioning seat 37, and then the knob belt is turned. The movable screw rod 32 rotates, and the screw rod 32 pushes the push block 39 toward the insertion rod 47 until one end of the plug passes through the inner wall of one side of the cavity 28 and is engaged with the insertion rod 47; the sealing cover 11 is buckled on the top of the box body 10 from top to bottom, and the threaded columns 40 at both ends of the holder 34 pass through the through holes 39 located on the sealing cover 11, and then the nut 13 is threadedly connected with the top of the threaded column 40, and then the sealing cover 11 and the box body 10 are fixedly connected by the first bolt 16, thereby completing its installation.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A photovoltaic junction box, characterized in that: The invention comprises a junction box assembly (1) and a support assembly (2), wherein the bottom end of the junction box assembly (1) is connected to the support assembly (2), and the junction box assembly (1) comprises a box body (10), a sealing cover (11) and a locking cover (12); the box body (10) is a horizontally arranged rectangular structure, the top end of the box body (10) is buckled with the sealing cover (11), a buffer pad (14) is fixedly connected at the center of the upper end surface of the sealing cover (11), and a protective shell (15) is fixedly glued to the top end of the buffer pad (14); two relatively parallel installation sleeves (18) are fixedly plugged on one side of the box body (10), and a rubber sleeve (19) for protecting a photovoltaic cable is fixedly glued to the inner wall of the installation sleeve (18), and the locking cover (12) is threadedly connected to the end of the installation sleeve (18) away from the box body (10), and the locking cover (12) is sleeved on the photovoltaic cable; The box body (10) is provided with an installation cavity (30) for installing a conductive block and a diode, the bottom inner wall of the installation cavity (30) is provided with an opening (31), a positioning seat (37) is installed on the inner wall of one end of the installation cavity (30) close to the installation sleeve (18), and second installation plates (38) are fixedly connected to both sides of the positioning seat (37), and the second installation plate (38) is fixedly connected to the box body (10) by a third bolt (36), and the sealing cover (11) is provided with a third bolt (36) on the inner wall of one end of the installation cavity (30) close to the installation sleeve (18). A card seat (34) adapted to the positioning seat (37) is installed on the wall, and the card seat (34) is connected to the positioning seat (37); an embedding groove (33) for installing the card seat (34) is provided on the inner wall of the sealing cover (11) close to the box body (10); through holes (39) for the threaded column (40) to pass through are provided on the inner walls at both ends of the embedding groove (33); and first mounting plates (35) for installing the threaded column (40) are fixedly connected to both ends of the card seat (34) away from the positioning seat (37); A photovoltaic cable passes through the base (34) and the positioning base (37); a first arc-shaped groove (41) adapted to the photovoltaic cable is provided on the inner wall of the bottom end of the base (34); a second arc-shaped groove (43) adapted to the photovoltaic cable is provided on the top end of the positioning base (37); a limiting groove (44) for a photovoltaic cable with a small diameter to pass through is also provided on the inner wall of the bottom end of the second arc-shaped groove (43); and an anti-slip sleeve (42) is fixedly glued to the inner walls of the first arc-shaped groove (41), the second arc-shaped groove (43) and the limiting groove (44); The bottom end of the clamping seat (34) is located on both sides of the first arc groove (41) and is fixedly plugged with two oppositely arranged plug rods (47); the top end of the positioning seat (37) is provided with a socket (46) for accommodating the plug rod (47) at a position corresponding to the plug rod (47); two sets of oppositely arranged locking components (45) are provided at positions corresponding to the sockets (46) at both ends of the positioning seat (37); the locking components (45) include a push block (29) and a screw rod (32); The support assembly (2) comprises a base (3), a heat dissipation mechanism (4), a vertical plate (5), a heat-conducting assembly (6), a mounting ear (7), a second heat-conducting plate (25), a heat sink (27), a limit plate (22) and a first heat-conducting plate (24); the base (3) is a horizontally arranged rectangular structure; a second heat-conducting plate (25) is fixedly embedded in the middle of the upper end surface of the base (3); heat-conducting assemblies (6) are installed at both ends of the upper end surface of the base (3); two groups of heat-conducting assemblies (6) are arranged opposite to each other; the junction box assembly (1) is located between the two groups of heat-conducting assemblies (6); and the heat-conducting assembly (6) comprises a side plate (8) and a heat-conducting fin (9); The bottom end of the box body (10) is provided with a groove (17) adapted to the first heat conducting plate (24); both ends of the first heat conducting plate (24) are fixedly connected to the limit plate (22) via second bolts (23); and the limit plate (22) is fixedly connected to the lower parts of both sides of the box body (1) via fifth bolts.

2. A photovoltaic junction box according to claim 1, characterized in that: The lower parts of both ends of the sealing cover (11) are fixedly connected with first buckle plates (20), and the upper parts of both ends of the box body (10) are fixedly connected with second buckle plates (21), the first buckle plates (20) are buckled on the second buckle plates (21), and the first buckle plates (20) and the second buckle plates (21) are fixedly connected by first bolts (16).

3. A photovoltaic junction box according to claim 1, characterized in that: The first mounting plate (35) is provided with a plurality of plates located on the same horizontal line, and one end of the threaded column (40) away from the first mounting plate (35) passes through the through hole (39) and is threadedly connected to the nut (13), and the threaded column (40), the through hole (39) and the nut (13) are provided in a plurality of groups.

4. A photovoltaic junction box according to claim 1, characterized in that: The bottom end of the side plate (8) is vertically connected to the upper end surface of the base (3), one side of the side plate (8) is in contact with one side of the box body (10), a plurality of heat conducting plates (9) arranged equidistantly are vertically welded to the side of the side plate (8) away from the box body (10), and the top end of the side plate (8) is fixedly connected to one end of the box body (10) by a fourth bolt.

5. A photovoltaic junction box according to claim 4, characterized in that: Mounting ears (7) are fixedly connected at the center of the lower parts of both ends of the base (3), an anti-skid pad is fixedly glued to the bottom end of the base (3), and a heat dissipation cavity (26) is provided inside the base (3).

6. A photovoltaic junction box according to claim 5, characterized in that: The inner wall at the top of the heat dissipation cavity (26) is fixedly connected to a plurality of heat dissipation fins (27) arranged at equal distances. A heat dissipation mechanism (4) is located in the middle of one end of the heat dissipation cavity (26). The heat dissipation mechanism (4) comprises a vertical plate (5) and a fan.

7. A photovoltaic junction box according to claim 6, characterized in that: A mounting hole for mounting a fan is provided on one side of the vertical plate (5), the mounting hole is communicated with the heat dissipation cavity (26), and a power source electrically connected to the fan is provided inside the vertical plate (5).

8. The photovoltaic junction box according to claim 1, characterized in that: The upper part of the positioning seat (37) is provided with cavities (28) for installing the locking assembly (45) on both sides of the socket (46), and the push block (29) is located in the cavity (28). The push block (29) is provided with a plug-in unit passing through the inner wall of one side of the cavity (28) on the side close to the socket (46), and the end of the plug-in unit away from the push block (29) is clamped with the insertion rod (47), and the push block (29) is rotatably connected to the side away from the plug-in unit with a screw rod (32), and the end of the screw rod (32) away from the push block (29) passes through the inner wall of the other side of the cavity (28) and is fixedly connected to the knob.

9. A photovoltaic junction box and a method for installing a photovoltaic junction box according to any one of claims 1 to 8, characterized in that: The steps include: S1. First, place the box body (10) on the top of the support assembly (2), and insert one end of the photovoltaic cable through the locking cover (12) and the installation sleeve (18) in sequence into the box body (10) for installation. The rubber sleeve (19) in the installation sleeve (18) is sleeved on the photovoltaic cable. The locking cover (12) and the installation sleeve (18) are threadedly connected and enter the second arc groove (43) of the photovoltaic cable on the positioning seat (37) in the box body (10). Then, the card seat (34) is buckled on the positioning seat (37), and the insertion rod (47) at the bottom end of the card seat (34) is inserted into the socket (46) at the top end of the positioning seat (37). Then, the knob is turned to drive the screw rod (32) to rotate, and the screw rod (32) pushes the push block (39) in the direction of the insertion rod (47) until one end of the plug passes through the inner wall of one side of the cavity (28) and is engaged with the insertion rod (47); Then, the sealing cover (11) is buckled onto the top of the box body (10) from top to bottom, the threaded columns (40) at both ends of the holder (34) pass through the through holes (39) located on the sealing cover (11), and then the nut (13) is threadedly connected to the top of the threaded column (40), and then the sealing cover (11) and the box body (10) are fixedly connected by the first bolt (16); S2, the box body (10) is located between the two groups of heat-conducting components (6), the bottom end of the side plate (8) is vertically connected to the upper end surface of the base (3), one side of the side plate (8) is in contact with one side of the box body (10), and a plurality of heat-conducting sheets (9) arranged equidistantly are vertically welded to the side of the side plate (8) away from the box body (10), the side plate (8) and the heat-conducting sheets (9) can conduct heat from the box body (10), and the top end of the side plate (8) is fixedly connected to one end of the box body (10) by a fourth bolt, so that the box body (10) can be tightly connected to the top end of the base (3); S3, the groove (17) at the bottom end of the box body (10) is stuck on the first heat conducting plate (24) at the top end of the base (3), and one side of the first heat conducting plate (24) is in contact with one side of the second heat conducting plate (25) embedded in the upper end surface of the base (3). The first heat conducting plate (24) and the second heat conducting plate (25) can conduct the heat in the box body (10) into the heat dissipation cavity (26), and dissipate the heat through the heat dissipation fins (27). At the same time, the fan located on the vertical plate (5) blows air into the heat dissipation cavity (26) and onto the heat dissipation fins (27).

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