CN118041225A - Photovoltaic module junction box - Google Patents
Photovoltaic module junction box Download PDFInfo
- Publication number
- CN118041225A CN118041225A CN202410197964.3A CN202410197964A CN118041225A CN 118041225 A CN118041225 A CN 118041225A CN 202410197964 A CN202410197964 A CN 202410197964A CN 118041225 A CN118041225 A CN 118041225A
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- China
- Prior art keywords
- fixedly connected
- bottom shell
- wire
- junction box
- movable column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 241000463219 Epitheca Species 0.000 claims abstract description 12
- 238000005260 corrosion Methods 0.000 claims abstract description 9
- 239000004576 sand Substances 0.000 claims abstract description 4
- 230000036541 health Effects 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 238000011156 evaluation Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 101150006573 PAN1 gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/081—Bases, casings or covers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Installation Of Indoor Wiring (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention relates to the technical field of junction boxes, and provides a photovoltaic module junction box which comprises a bottom shell and an upper shell movably connected to the outer surface of the bottom shell, wherein a connecting structure is arranged between the upper shell and the bottom shell, a wire is arranged in the bottom shell, one end of the wire is connected with a metal sheet, the other end of the metal sheet is connected with a junction module through the wire, an anti-corrosion structure is connected between the outer surface of the metal sheet and the end head of the wire as well as the inner wall of the bottom shell, and a limiting structure is connected at the position, corresponding to the wire, of the inner side of the bottom shell; the lower extreme inboard fixedly connected with sand grip of epitheca, draw-in groove has been seted up in the both sides outside of drain pan, and the inboard fixedly connected with fixed plate of drain pan, the upper end fixedly connected with protruding portion of fixed plate, the surface of epitheca corresponds protruding portion one side department fixedly connected with clamping plate. Through above-mentioned technical scheme, it is inconvenient to have solved current photovoltaic module terminal box shell concatenation, and follow-up split needs unscrew the screw to disassemble, very loaded down with trivial details problem when assembling or overhauling.
Description
Technical Field
The invention relates to the technical field of junction boxes, in particular to a junction box for a photovoltaic module.
Background
The junction box of the photovoltaic component is used for connecting electric energy generated by the photovoltaic equipment with an external circuit in the photovoltaic equipment, and the electric energy generated by the photovoltaic device can be directly input into an engine oil circuit or a connecting circuit of electric equipment through the action of the junction box;
Through retrieval, the photovoltaic module junction box and the photovoltaic module with the authorized bulletin number of CN115296612B have the effects of simplifying the installation process of the photovoltaic module junction box, reducing the influence of high temperature on the junction box and improving the sealing effect;
however, the existing photovoltaic module junction box shell is inconvenient to splice, and the follow-up disassembly is required to be disassembled by unscrewing screws, so that the assembly or maintenance is very complicated, and therefore, the photovoltaic module junction box is provided.
Disclosure of Invention
The invention provides a photovoltaic module junction box, which solves the problems that the existing photovoltaic module junction box shell is inconvenient to splice, the follow-up disassembly needs to be disassembled by unscrewing screws, and the assembly or maintenance is extremely complicated in the background art.
The technical scheme of the invention is as follows:
The utility model provides a photovoltaic module terminal box, includes drain pan and swing joint in the epitheca of drain pan surface, be provided with the linking structure between epitheca and the drain pan, the inside of drain pan is provided with the wire, the one end of wire is connected with the sheetmetal, the other end of sheetmetal is connected with wiring assembly through the wire, be connected with anticorrosion structure between the outer surface of sheetmetal and the end of wire and the inner wall of drain pan, the inboard of drain pan corresponds wire department and is connected with limit structure;
The inner side fixedly connected with sand grip of lower extreme of epitheca, the draw-in groove has been seted up in the both sides outside of drain pan, the inboard fixedly connected with fixed plate of drain pan, the upper end fixedly connected with protruding portion of fixed plate, the surface of epitheca corresponds protruding portion one side department fixedly connected with clamping plate, the lower extreme fixedly connected with movable rod of fixed plate, the lower extreme surface of drain pan corresponds movable rod lower extreme department and has seted up sunken groove, the lower extreme fixedly connected with pull ring of movable rod, the surface of movable rod is close to lower extreme department fixedly connected with No. two fixed plates, be provided with a top between No. two fixed plates and the inner wall of drain pan and move the spring.
As a further technical scheme of the invention, a transmission module, an evaluation module and a detection module are respectively and fixedly connected in the bottom shell, a terminal signal of the transmission module is connected with a control room, the control room is used for remotely checking the health state of the junction box, the control room is connected with the phase of the transmission module through a 5G signal, the transmission module is used for realizing signal transmission, the detection module is used for respectively collecting the circulating current of a wire and the temperature and humidity condition in the bottom shell, the evaluation module is used for evaluating and calculating a health score algorithm of the current junction box, and the health score calculation follows the following formula:
total health score = (current health score current weight + temperature health score temperature weight + humidity health score humidity weight)/(current weight + temperature weight + humidity weight);
The magnitude of the weight is set by an administrator, the current health degree is compared with the design current, the score is higher as the current is closer to the design current, the temperature health degree score is calculated to exceed the maximum design temperature, the temperature health degree score is smaller as the exceeding time is longer, the humidity health degree score is judged by the time that the junction box is in humidity, and the humidity health degree score is lower as the time that the junction box is in humidity is longer.
As a further technical scheme of the invention, the anti-corrosion structure comprises a rubber layer fixedly connected to the connection part of the outer surface of the metal sheet corresponding to the wire, a hollow column is fixedly connected to the position, corresponding to the connection part of the metal sheet and the wire, of the outer surface of the hollow column, a first movable column is rotatably connected to the outer surface of the hollow column through threads, an annular groove is formed in the outer surface of the lower end of the metal sheet, a convex ring is fixedly connected to the upper end of the first movable column, a locking spring is arranged in the hollow column, and a convex column is fixedly connected to the outer surface of the first movable column.
As a further technical scheme of the invention, the limiting structure comprises a bottom plate movably connected to the outer surface of the inner wall of the bottom shell, a concave hole is formed in the outer surface of the bottom plate, a limiting groove is formed in the center of the bottom plate, a sliding plate is arranged in the limiting groove, a second movable column is fixedly connected to the upper end of the sliding plate, a guide rod is fixedly connected to the upper end of the second movable column, a pulling spring is arranged in the limiting groove, a positioning ring is fixedly connected to the top end of the guide rod, a clamping column is fixedly connected to the outer surface of one side of the guide rod, a screw is arranged in the concave hole, and a plurality of threaded holes matched with the lower end of the screw are formed in the outer surface of the inner wall of the bottom shell.
As a further technical scheme of the invention, the protruding part is separated from the clamping plate by pulling the pull ring downwards, the outer surface of one side of the protruding part is of a chamfer structure, the upper shell and the bottom shell are in sliding connection, the bottommost end of the pull ring is higher than the bottommost horizontal plane of the bottom shell, the first fixing plate is made of a tough material, and the position reset of the first fixing plate and the protruding part is realized through the toughness of the first fixing plate and the pushing movement of the pushing movement spring.
As a further technical scheme of the invention, the inner diameter of the jacking spring is larger than the diameter of the movable rod, the ends of the upper and lower elastic ends of the jacking spring are fixedly connected with the second fixed plate and the bottom shell respectively, the lower end of the movable rod penetrates through the bottom shell, and the movable rod is in sliding connection with the bottom shell.
As a further technical scheme of the invention, the side section of the first movable column is of an H-shaped structure, the upper end of the H is shorter than the lower end of the H, the convex ring is made of elastic materials, the end copper wire of the upper end of the wire corresponding to the first movable column is of an explosive structure, the inner part of the upper end of the first movable column is tightly attached to the metal sheet by rotating the first movable column, and the sealing effect is kept by the wire penetrating through the rubber layer.
As a further technical scheme of the invention, the upper and lower elastic two end heads of the anti-loose spring are respectively and fixedly connected with the first movable column and the bottom shell, the first movable column is propped by the anti-loose spring to prevent the first movable column from rotating downwards to move through the first movable column and the rubber layer to be matched with the metal sheet so as to keep the tightness of the exposed copper wire at the end head of the wire.
As a further technical scheme of the invention, the bottom plate is stably connected with the bottom shell through the concave holes, the clamping columns are of a bent structure, the number of the concave holes is a plurality of groups, the concave holes are distributed in an annular array, the lower ends of the clamping columns are matched with the concave holes, the guide rod moves up and down along the limit groove, the guide rod can freely rotate by taking the axle center of the guide rod as an axle after the clamping columns are separated from the concave holes, and the lower ends of the guide rod are attached to the outer surface of the concave holes through the action of pulling the spring.
As a further technical scheme of the invention, the second movable column penetrates through the limit groove from the inside of the limit groove to the upper end of the bottom plate, the pulling spring is sleeved on the outer surface of the second movable column, and the upper and lower elastic two end heads of the pulling spring are propped against the inner outer surface of the upper end of the bottom plate and the outer surface of the upper end of the sliding plate.
The working principle and the beneficial effects of the invention are as follows:
1. According to the invention, through the effect of the connecting structure, the upper shell can be conveniently installed and connected on the bottom shell, and the upper shell can be conveniently taken down from the bottom shell when the junction box breaks down and needs to be overhauled, so that the junction box can be conveniently spliced and assembled, and the junction box can be conveniently disassembled and overhauled subsequently.
2. According to the invention, through the effect of the anti-corrosion structure, the connection part of the wire head and the metal sheet can be subjected to anti-corrosion protection, and rust of the copper wire guide wire inside the wire under the environment of high humidity can be avoided, so that the contact property between the wire inside the wire and the metal sheet is always kept in a good state.
3. According to the invention, through the effect of the limiting structure, the trend of the internal wires can be limited and positioned according to the actual installation requirement, so that the wiring of the wires can be adjusted according to the requirement, the wire bonding caused by excessive wires is avoided, and the short circuit of the wires caused by the fact that the wires are bonded too close to each other is avoided.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure of the inside of the bottom shell of the present invention;
FIG. 3 is a schematic view of a partial structure of the present invention in section at the joint structure;
FIG. 4 is a schematic view showing a partial structure of a bottom chassis of the present invention with an inner portion cut away;
FIG. 5 is an enlarged view of FIG. 4A in accordance with the present invention;
FIG. 6 is a diagram of a system in a bottom shell of the present invention;
Fig. 7 is a schematic view of a partial structure of the limiting structure of the present invention in section.
In the figure: 1. a bottom case; 2. an upper case; 3. a connection structure; 30. a convex strip; 31. a first fixing plate; 32. a protruding portion; 33. a clamping plate; 34. a concave groove; 35. a movable rod; 36. a pull ring; 37. a second fixing plate; 38. a top-moving spring; 39. a clamping groove; 4. a wire; 5. a metal sheet; 6. a wiring assembly; 7. an anti-corrosion structure; 71. a rubber layer; 72. a hollow column; 73. a first movable column; 74. an annular groove; 75. a convex ring; 76. a locking spring; 77. a convex column; 8. a limit structure; 80. a screw; 81. a bottom plate; 82. a concave hole; 83. a limit groove; 84. a sliding plate; 85. a second movable column; 86. pulling the spring; 87. a guide rod; 88. a positioning ring; 89. a clamping column; 9. a control room; 10. a transmission module; 11. an evaluation module; 12. and a detection module.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 4, the present embodiment provides a photovoltaic module junction box, which includes a bottom shell 1 and an upper shell 2 movably connected to an outer surface of the bottom shell 1, a connection structure 3 is provided between the upper shell 2 and the bottom shell 1, a wire 4 is provided in the bottom shell 1, one end of the wire 4 is connected with a metal sheet 5, the other end of the metal sheet 5 is connected with a junction module 6 through the wire 4, an anti-corrosion structure 7 is connected between the outer surface of the metal sheet 5 and an end of the wire 4 as well as an inner wall of the bottom shell 1, and a limit structure 8 is connected at a position corresponding to the wire 4 in the inner side of the bottom shell 1;
The lower extreme inboard fixedly connected with sand grip 30 of epitheca 2, draw-in groove 39 has been seted up in the both sides outside of drain pan 1, the inboard fixedly connected with fixed plate 31 of drain pan 1, the upper end fixedly connected with protruding portion 32 of fixed plate 31, the surface of epitheca 2 corresponds protruding portion 32 one side department fixedly connected with clamping plate 33, the lower extreme fixedly connected with movable rod 35 of fixed plate 31, the lower extreme surface of drain pan 1 corresponds movable rod 35 lower extreme department and has seted up sunken groove 34, the lower extreme fixedly connected with pull ring 36 of movable rod 35, the surface of movable rod 35 is close to lower extreme department fixedly connected with No. two fixed plates 37, be provided with a top between No. two fixed plates 37 and the inner wall of drain pan 1 and move spring 38.
The protruding part 32 is separated from the clamping plate 33 by pulling the pull ring 36 downwards, one side outer surface of the protruding part 32 is of a chamfer structure, the upper shell 2 is in sliding connection with the bottom shell 1, the lowest end of the pull ring 36 is higher than the lowest end horizontal plane of the bottom shell 1, the first fixing plate 31 is made of a tough material, and the position reset of the first fixing plate 31 and the protruding part 32 is realized through the toughness of the first fixing plate 31 and the pushing action of the pushing spring 38; the inner diameter of the pushing spring 38 is larger than the diameter of the movable rod 35, the upper and lower elastic two ends of the pushing spring 38 are respectively and fixedly connected with the second fixed plate 37 and the bottom shell 1, the lower end of the movable rod 35 penetrates through the bottom shell 1, and the movable rod 35 is in sliding connection with the bottom shell 1.
In this embodiment, when the upper shell 2 is mounted on the bottom shell 1, a user can directly slide the protruding strip 30 at one end of the upper shell 2 horizontally corresponding to the opening of the clamping groove 39 on the bottom shell 1 until the clamping plate 33 contacts with the protruding portion 32, and continuously slide the upper shell 2, so that the clamping plate 33 pushes the protruding portion 32 to incline downwards until the clamping plate 33 is just clamped on the other side of the protruding portion 32, and at this time, the protruding portion 32 together with the fixing plate 31 returns to the initial position, and at this time, the connection between the upper shell 2 and the bottom shell 1 can be completed; on the contrary, when the upper case 2 needs to be disassembled to overhaul the inside of the junction box, the user can pull the pull ring 36 in detail, pull the movable rod 35 to move downwards through the pull ring 36, pull the protruding part 32 to move obliquely downwards through the movable rod 35, meanwhile, the pushing spring 38 is extruded and contracted by the second fixing plate 37 until the upper end of the protruding part 32 is lower than the lowest end of the clamping plate 33, at the moment, the upper case 2 can be taken down by sliding the upper case 2 horizontally outwards, and overhaul can be performed inside the junction box.
Example 2
As shown in fig. 1 to 4, on the basis of embodiment 1, it is further provided that a transmission module 10, an evaluation module 11 and a detection module 12 are fixedly connected to the inside of the bottom shell 1, a terminal signal of the transmission module 10 is connected to a control room 9, the control room 9 is used for remotely checking the health state of the junction box, the control room 9 is connected with the phase of the transmission module 10 through a 5G signal, the transmission module 10 is used for realizing signal transmission, the detection module 12 is used for respectively collecting the circulating current of the lead 4 and the temperature and humidity condition inside the bottom shell 1, the evaluation module 11 is used for evaluating and calculating a health score algorithm of the current junction box, and the health score calculation follows the following formula:
total health score = (current health score current weight + temperature health score temperature weight + humidity health score humidity weight)/(current weight + temperature weight + humidity weight);
The magnitude of the weight is set by an administrator, the current health degree is compared with the design current, the score is higher as the current is closer to the design current, the temperature health degree score is calculated to exceed the maximum design temperature, the temperature health degree score is smaller as the exceeding time is longer, the humidity health degree score is judged by the time that the junction box is in humidity, and the humidity health degree score is lower as the time that the junction box is in humidity is longer.
In this embodiment, in the in-process of using, can evaluate the health degree of terminal box from several dimensions of temperature, humidity, electric current condition to can evaluate the health degree of terminal box according to the concrete service condition of terminal box under the different regions, can make things convenient for the managers to observe the health condition of terminal box long-range, can in time overhaul or change when the terminal box is about to damage.
Example 2
As shown in fig. 1 to 4, on the basis of embodiment 1, it is further proposed that the anti-corrosion structure 7 comprises a rubber layer 71 fixedly connected to the connection position of the outer surface of the metal sheet 5 corresponding to the wire 4, a hollow column 72 fixedly connected to the connection position of the inner wall outer surface of the bottom shell 1 corresponding to the wire 4 at the right lower end of the connection position of the metal sheet 5 and the wire 4, a first movable column 73 rotatably connected to the outer surface of the hollow column 72 through threads, an annular groove 74 provided on the outer surface of the lower end of the metal sheet 5, a convex ring 75 fixedly connected to the upper end of the first movable column 73, a locking spring 76 provided inside the hollow column 72, and a convex column 77 fixedly connected to the outer surface of the first movable column 73.
The side section of the first movable column 73 is of an H-shaped structure, the upper end of the H is shorter than the lower end of the H, the convex ring 75 is made of elastic materials, the end copper wire of the upper end of the first movable column 73 corresponding to the lead 4 is of an explosive structure, the inner part of the upper end of the first movable column 73 is tightly attached to the metal sheet 5 by rotating the first movable column 73, and the sealing effect is maintained by the lead 4 penetrating through the rubber layer 71; the upper and lower elastic two ends of the anti-loose spring 76 are respectively fixedly connected with the first movable column 73 and the bottom shell 1, the first movable column 73 is propped by the anti-loose spring 76 to prevent the first movable column 73 from moving downwards in a rotating way, and the sealing performance of the exposed copper wires at the end heads of the wires 4 is kept by the cooperation of the first movable column 73 and the rubber layer 71 with the metal sheet 5.
In this embodiment, when the wire 4 is lapped with the metal sheet 5, the first movable column 73 is located at the lowest end, that is, a space for adjustment is provided between the upper end of the first movable column 73 and the lower end of the metal sheet 5, a user may first pass one end of the wire 4 through the rubber layer 71, seal the outer surface of the wire 4 by the tightly attached property of the rubber layer 71, after one end of the wire 4 passes through, remove a part of the insulating material outside the end of the wire 4 passing through the rubber layer 71, so that a part of the internal copper wire is exposed, and the exposed copper wire is unfolded to form an explosion shape, then the protruding ring 75 screwed up until the upper end of the first movable column 73 is embedded in the inside of the annular groove 74, at this time, the inner wall of the upper end of the first movable column 73 just tightly presses the copper wire 4 end of the explosion shape to the metal sheet 5, in the use process, the upper end forms a sealing effect through the rubber layer 71, and the lower end forms a sealing effect through the protruding ring 75 in the inside the annular groove 74, thereby greatly reducing the water vapor corrosion effect of the end to the wire 4 in the whole use process, and the bad contact effect of the copper wire is avoided, and bad contact effect caused by the copper wire is avoided.
Example 2
As shown in fig. 1 to 4, on the basis of embodiment 1, it is further proposed that the limit structure 8 comprises a bottom plate 81 movably connected to the outer surface of the inner wall of the bottom shell 1, a concave hole 82 is formed in the outer surface of the bottom plate 81, a limit groove 83 is formed in the center of the bottom plate 81, a sliding plate 84 is arranged in the limit groove 83, a second movable column 85 is fixedly connected to the upper end of the sliding plate 84, a guide rod 87 is fixedly connected to the upper end of the second movable column 85, a pulling spring 86 is arranged in the limit groove 83, a positioning ring 88 is fixedly connected to the top end of the guide rod 87, a clamping column 89 is fixedly connected to the outer surface of one side of the guide rod 87, a screw 80 is arranged in the concave hole 82, and a plurality of threaded holes matched with the lower end of the screw 80 are formed in the outer surface of the inner wall of the bottom shell 1.
The bottom plate 81 is stably connected with the bottom shell 1 through the concave holes 82, the clamping columns 89 are of a bent structure, the number of the concave holes 82 is a plurality of groups, the clamping columns 89 are distributed in an annular array, the lower ends of the clamping columns 89 are matched with the concave holes 82, the guide rods 87 move up and down along the limit grooves 83, the guide rods 87 can freely rotate by taking the axes of the guide rods 87 as axes after the clamping columns 89 are separated from the concave holes 82, and the lower ends of the guide rods 87 are attached to the outer surfaces of the concave holes 82 through the pushing action of the pulling springs 86; the second movable column 85 penetrates the upper end of the bottom plate 81 from the inside of the limit groove 83, the pulling spring 86 is sleeved on the outer surface of the second movable column 85, and the upper and lower elastic two end heads of the pulling spring 86 are propped against the inner outer surface of the upper end of the bottom plate 81 and the outer surface of the upper end of the sliding plate 84.
In this embodiment, in the process of setting the wire 4, when the trend of the wire 4 needs to be adjusted, a user can fix a group of bottom plates 81 through the concave holes 82 at the corners where the wire needs to turn, then one end of the wire 4 passes through the inside of the positioning ring 88, in the process of installation, the user can pull the positioning ring 88 upwards as required, at this time, the pulling spring 86 is compressed until the lower end of the clamping post 89 just wants to be separated from the inside of the concave holes 82, then the positioning ring 88 is rotated to enable the trend of the wire to meet the use requirement, then the lower end of the clamping post 89 corresponds to the nearest group of concave holes 82, the positioning ring 88 is gradually loosened, the guide rod 87 is driven to move downwards together with the clamping post 89 under the reaction force of the second movable post 85 until the lower end of the clamping post 89 is clamped into the inside of the concave holes 82, and the trend of the wire 4 can be adjusted as required in the process of use.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The utility model provides a photovoltaic module terminal box, includes drain pan (1) and swing joint in epitheca (2) of drain pan (1) surface, its characterized in that, be provided with between epitheca (2) and drain pan (1) and link up structure (3), the inside of drain pan (1) is provided with wire (4), the one end of wire (4) is connected with sheetmetal (5), the other end of sheetmetal (5) is connected with wiring assembly (6) through wire (4), be connected with anticorrosion structure (7) between the end of the surface of sheetmetal (5) and wire (4) and the inner wall of drain pan (1), the inboard of drain pan (1) corresponds wire (4) department and is connected with limit structure (8);
The utility model discloses a lower extreme inboard fixedly connected with sand grip (30) of epitheca (2), draw-in groove (39) have been seted up in the both sides outside of drain pan (1), the inboard fixedly connected with fixed plate (31) of drain pan (1), the upper end fixedly connected with protruding portion (32) of fixed plate (31), the surface of epitheca (2) corresponds protruding portion (32) one side department fixedly connected with clamping plate (33), the lower extreme fixedly connected with movable rod (35) of fixed plate (31), recessed groove (34) have been seted up in the lower extreme surface of drain pan (1) corresponding movable rod (35) lower extreme department, the lower extreme fixedly connected with pull ring (36) of movable rod (35), the surface of movable rod (35) is close to lower extreme department fixedly connected with No. two fixed plates (37), be provided with top movable spring (38) between No. two fixed plates (37) and the inner wall of drain pan (1).
2. The photovoltaic module junction box according to claim 1, wherein the inside of the bottom shell (1) is fixedly connected with a transmission module (10), an evaluation module (11) and a detection module (12) respectively, a terminal signal of the transmission module (10) is connected with a control room (9), the control room (9) is used for remotely checking the health state of the junction box, the control room (9) is connected with the transmission module (10) through a 5G signal, the transmission module (10) is used for realizing signal transmission, the detection module (12) is used for respectively collecting the circulation current of a wire (4) and the temperature and humidity condition inside the bottom shell (1), the evaluation module (11) is used for evaluating and calculating a health score algorithm of the current junction box, and the health score calculation follows the following formula:
total health score = (current health score current weight + temperature health score temperature weight + humidity health score humidity weight)/(current weight + temperature weight + humidity weight);
The magnitude of the weight is set by an administrator, the current health degree is compared with the design current, the score is higher as the current is closer to the design current, the temperature health degree score is calculated to exceed the maximum design temperature, the temperature health degree score is smaller as the exceeding time is longer, the humidity health degree score is judged by the time that the junction box is in humidity, and the humidity health degree score is lower as the time that the junction box is in humidity is longer.
3. The photovoltaic module junction box according to claim 1, characterized in that the anti-corrosion structure (7) comprises a rubber layer (71) fixedly connected to the connection part of the outer surface of the metal sheet (5) corresponding to the lead (4), a hollow column (72) is fixedly connected to the position of the inner wall outer surface of the bottom shell (1) corresponding to the connection part of the metal sheet (5) and the lead (4) at the right lower end, a first movable column (73) is connected to the outer surface of the hollow column (72) through threaded rotation, an annular groove (74) is formed in the outer surface of the lower end of the metal sheet (5), a convex ring (75) is fixedly connected to the upper end of the first movable column (73), a locking spring (76) is arranged in the hollow column (72), and a convex column (77) is fixedly connected to the outer surface of the first movable column (73).
4. The photovoltaic module junction box according to claim 1, characterized in that the limit structure (8) comprises a bottom plate (81) movably connected to the outer surface of the inner wall of the bottom shell (1), a concave hole (82) is formed in the outer surface of the bottom plate (81), a limit groove (83) is formed in the center of the bottom plate (81), a sliding plate (84) is arranged in the limit groove (83), a second movable column (85) is fixedly connected to the upper end of the sliding plate (84), a guide rod (87) is fixedly connected to the upper end of the second movable column (85), a pulling spring (86) is arranged in the limit groove (83), a positioning ring (88) is fixedly connected to the top end of the guide rod (87), a clamping column (89) is fixedly connected to the outer surface of one side of the guide rod (87), a screw (80) is arranged in the concave hole (82), and a plurality of threaded holes matched with the lower ends of the screw (80) are formed in the outer surface of the inner wall of the bottom shell (1).
5. The photovoltaic module junction box according to claim 1, characterized in that the protruding portion (32) is separated from the clamping plate (33) by pulling the pull ring (36) downwards, one side outer surface of the protruding portion (32) is of a chamfer-shaped structure, the upper shell (2) is in sliding connection with the bottom shell (1), the lowest end of the pull ring (36) is higher than the lowest end horizontal plane of the bottom shell (1), the first fixing plate (31) is made of a tough material, and the position reset of the first fixing plate (31) together with the protruding portion (32) is realized through the toughness of the first fixing plate (31) and the pushing movement of the pushing movement spring (38).
6. The photovoltaic module junction box according to claim 5, wherein the inner diameter of the top moving spring (38) is larger than the diameter of the movable rod (35), the upper and lower elastic two end heads of the top moving spring (38) are fixedly connected with the second fixing plate (37) and the bottom shell (1) respectively, the lower end of the movable rod (35) penetrates through the bottom shell (1), and the movable rod (35) is in sliding connection with the bottom shell (1).
7. The junction box of the photovoltaic module according to claim 3, wherein the side section of the first movable column (73) is of an H-shaped structure, the upper end of the H is shorter than the lower end of the H, the convex ring (75) is made of elastic materials, the end copper wire of the upper end of the wire (4) corresponding to the first movable column (73) is of an explosive structure, the inner part of the upper end of the first movable column (73) is tightly attached to the metal sheet (5) by rotating the first movable column (73), and the sealing effect is maintained by the wire (4) penetrating through the rubber layer (71).
8. The junction box of the photovoltaic module according to claim 7, wherein the upper and lower elastic two ends of the locking spring (76) are fixedly connected with the first movable column (73) and the bottom shell (1) respectively, the first movable column (73) is propped by the locking spring (76) to prevent the first movable column (73) from moving downwards in a rotating way, and the sealing performance of the copper wires exposed by the end heads of the leads (4) is maintained by the cooperation of the first movable column (73) and the rubber layer (71) with the metal sheet (5).
9. The photovoltaic module junction box according to claim 4, wherein the bottom plate (81) is stably connected with the bottom shell (1) through the concave holes (82), the clamping columns (89) are of a bent structure, the concave holes (82) are in a plurality of groups and distributed in a ring-shaped array, the lower ends of the clamping columns (89) are matched with the concave holes (82), the guide rods (87) move up and down along the limit grooves (83), the guide rods (87) can freely rotate by taking the axes of the guide rods (87) as axes after the clamping columns (89) are separated from the concave holes (82), and the lower ends of the guide rods (87) are attached to the outer surfaces of the concave holes (82) through the pushing action of the pulling springs (86).
10. The photovoltaic module junction box according to claim 9, wherein the second movable column (85) penetrates from the inside of the limit groove (83) to the upper end of the bottom plate (81), the pulling spring (86) is sleeved on the outer surface of the second movable column (85), and the upper and lower elastic two end heads of the pulling spring (86) are abutted against the inner outer surface of the upper end of the bottom plate (81) and the outer surface of the upper end of the sliding plate (84).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410197964.3A CN118041225B (en) | 2024-02-22 | 2024-02-22 | Photovoltaic module junction box |
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| CN202410197964.3A CN118041225B (en) | 2024-02-22 | 2024-02-22 | Photovoltaic module junction box |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180054160A1 (en) * | 2016-08-16 | 2018-02-22 | Helion Concepts,Inc. | Compact, low-profile, multiply configurable solar photovoltaic module with concealed connectors |
| CN217469887U (en) * | 2022-06-06 | 2022-09-20 | 上海兰彬电子科技有限公司 | Photovoltaic module terminal box convenient to encapsulating |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180054160A1 (en) * | 2016-08-16 | 2018-02-22 | Helion Concepts,Inc. | Compact, low-profile, multiply configurable solar photovoltaic module with concealed connectors |
| CN217469887U (en) * | 2022-06-06 | 2022-09-20 | 上海兰彬电子科技有限公司 | Photovoltaic module terminal box convenient to encapsulating |
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