CN110784172A - Solar photovoltaic junction box with high heat-resisting and heat-dissipating performance - Google Patents
Solar photovoltaic junction box with high heat-resisting and heat-dissipating performance Download PDFInfo
- Publication number
- CN110784172A CN110784172A CN201911274728.2A CN201911274728A CN110784172A CN 110784172 A CN110784172 A CN 110784172A CN 201911274728 A CN201911274728 A CN 201911274728A CN 110784172 A CN110784172 A CN 110784172A
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- box body
- junction box
- box
- stopper
- bottom plate
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- 238000001816 cooling Methods 0.000 claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052802 copper Inorganic materials 0.000 claims abstract description 28
- 239000010949 copper Substances 0.000 claims abstract description 28
- 230000017525 heat dissipation Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims description 57
- 230000005540 biological transmission Effects 0.000 claims description 43
- 241000883990 Flabellum Species 0.000 claims 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000006185 dispersion Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 4
- 239000003779 heat-resistant material Substances 0.000 abstract description 3
- 239000000110 cooling liquid Substances 0.000 description 21
- 238000007789 sealing Methods 0.000 description 15
- 238000009434 installation Methods 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 241000220317 Rosa Species 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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
- 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
- H02S40/345—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes with cooling means associated with the electrical connection means, e.g. cooling means associated with or applied to the junction box
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- 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
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- Patch Boards (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a solar photovoltaic junction box with high heat resistance and heat dissipation performance, which comprises a bottom plate, a box body arranged on the bottom plate and a cover plate arranged on the box body, wherein a copper sheet is arranged in the box body, a plurality of diodes are arranged on the copper sheet, a fixed block matched with the copper sheet is arranged in the box body, a wiring port is arranged on the side wall of the box body, pins of the diodes are welded on the copper sheet, the bottom plate and the box body are both made of heat-resistant materials, a plurality of through grooves are arranged on the bottom plate, and cooling pipes are laid on the bottom plate; through diode welding mode and high temperature resistant material, increase the high temperature resistance performance of terminal box, avoid the terminal box to damage under the high temperature operating mode, extension terminal box life.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power generation, and particularly relates to a solar photovoltaic junction box with high heat resistance and heat dissipation performance.
Background
The photovoltaic junction box is a connecting device between a solar cell array formed by solar cell modules and the solar charging control device, and is mainly used for connecting and protecting the solar cell modules, connecting electric power generated by the solar cells with an external circuit and conducting current generated by the photovoltaic modules. Because the working environment of the photovoltaic junction box is special, large current needs to pass through the photovoltaic junction box, the photovoltaic junction box can generate huge heat energy when in use, if the photovoltaic junction box works in a high-temperature environment for a long time, the service life of the photovoltaic junction box is greatly influenced, and meanwhile, the potential safety hazard of photovoltaic power generation is increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the solar photovoltaic junction box with the cooling effect and high heat-resisting and heat-radiating performance.
In order to achieve the purpose, the invention adopts the following technical scheme: a solar photovoltaic junction box with high heat resistance and heat dissipation performance comprises a bottom plate, a box body arranged on the bottom plate and a cover plate arranged on the box body, wherein a copper sheet is arranged in the box body, a plurality of diodes are arranged on the copper sheet, a fixing block matched with the copper sheet is arranged in the box body, wiring ports are formed in the side wall of the box body, pins of the diodes are welded on the copper sheet, the bottom plate and the box body are made of heat-resistant materials, a plurality of through grooves are formed in the bottom plate, and cooling pipes are further laid on the bottom plate; when the junction box is used, the electric wire is inserted into the junction hole, so that the electric wire and the junction box form connection and matching, and electric energy generated on the photovoltaic panel can be conveniently carried; the high-temperature resistance of the junction box is improved by a diode welding mode and high-temperature resistant materials, the junction box is prevented from being damaged under a high-temperature working condition, and the service life of the junction box is prolonged; when the junction box works, airflow enters the junction box under the arrangement of the through grooves, and the junction box is cooled by the action of external airflow, so that the temperature in the junction box is prevented from being rapidly increased; the cooling liquid in the cooling pipe assists the airflow to cool the junction box, so that the cooling effect of the junction box is improved, and safety accidents caused by overhigh temperature of the junction box are prevented; under the mutual matching of the fixing block and the copper sheet, the copper sheet is effectively fixed in the junction box, so that the copper sheet has the function of conveying current under the action of the copper sheet, and the use reliability of the junction box is improved; meanwhile, under the mutual matching of the fixing block and the copper sheet, the copper sheet can be directly taken out of the junction box after the cover plate is opened, and the maintenance cost of the junction box is reduced.
The box body is provided with a first movable cavity, the box body is provided with a cavity communicated with the first movable cavity, compressed gas is filled in the cavity, the bottom plate is provided with a first connecting rod, the first connecting rod penetrates through the first movable cavity, one end of the first connecting rod is provided with a first limiting plate, and the first limiting plate is provided with a third limiting spring; after the current rose through the temperature in the box body, high temperature in the box body transmits to the bottom plate, compressed gas is expanded after being heated, compressed gas moves toward first activity intracavity, promote first limiting plate toward the outside motion of first activity chamber under the atmospheric pressure effect, first limiting plate drives the bottom plate and removes, make bottom plate and box body phase separation, form the space between bottom plate and box body, make the air current directly contact with box body inside, increase the inside heat radiating area of box body, so that with the heat in the box body effluvium fast, promote the radiating effect to the box body, provide good guard action for the terminal box.
The bottom plate is provided with an installation box, the installation box is arranged on one side of the cooling pipe, the cooling pipe is provided with a first through hole, a first driving wheel is arranged in the installation box, a first driving shaft is arranged on the first driving wheel and penetrates through the first through hole, and a first fan blade is arranged on the first driving shaft; when the junction box is in normal use, the first driving wheel rotates, the first driving wheel drives the first transmission shaft to rotate, the first fan blades rotate along with the first transmission shaft, the cooling liquid in the cooling pipe is driven to be in a motion state under the action of the first fan blades, the cooling liquid flows in the cooling pipe, the cooling liquid is guaranteed to be heated uniformly, the cooling liquid is effectively utilized, and the cooling effect of the cooling liquid on the junction box is improved.
A second driving wheel matched with the first driving wheel is arranged in the mounting box, a second transmission shaft is arranged on the second driving wheel, a third driving wheel is arranged on the second transmission shaft, a plurality of second fan blades are arranged on the third driving wheel, and a through cavity matched with the second fan blades is formed in the side wall of the mounting box; when the junction box is used, airflow enters from the through cavity, the airflow in the through cavity directly impacts the second fan blades, the second fan blades rotate under the action of the airflow, the second fan blades drive the second transmission shaft to rotate, the second transmission shaft drives the third transmission wheel to rotate, and under the mutual matching of the second transmission wheel and the first transmission wheel, the first transmission wheel drives the first transmission shaft to rotate to provide power for the rotation of the first fan blades so as to enable cooling liquid to be in a motion state under the action of the first fan blades, the cooling liquid flows in the cooling pipe, and the cooling effect of the cooling liquid on the junction box is improved; the third driving wheel is driven to rotate under the action of air flow, an additional power source is not needed, wind energy is reasonably utilized, the structure of the junction box is simplified, and the cost of the junction box is reduced.
A first movable groove is formed in the cover plate, a first limiting block is arranged in the first movable groove, a first limiting spring is arranged on the side wall of the first limiting block and fixedly connected in the first movable groove, a first limiting groove matched with the first limiting block is formed in the inner wall of the box body, and a first chute is formed in the bottom of the first limiting block; when the cover plate is installed, the cover plate is pressed into the box body, the first limiting block is prevented from obstructing the installation of the cover plate under the action of the first chute, and the cover plate is normally installed into the box body; along with the downward motion of apron, first stopper pushes first stopper to first movable groove with the contact of box body lateral wall, moves to first spacing inslot back to first spacing groove one side until first stopper, pushes first stopper to first spacing inslot under first spacing spring action, makes first stopper and first spacing groove form the cooperation, fixes the apron in the box body, guarantees the linkage effect of apron and box body.
A second movable groove is formed in the cover plate, a second limiting block is arranged in the second movable groove, a second limiting spring is arranged on the side wall of the second limiting block, and the second limiting spring is fixedly connected to the inner wall of the second movable groove; the box body is provided with a connecting plate, the connecting plate is provided with a guide groove matched with the second limiting block, the bottom of the guide groove is provided with an opening matched with the second limiting block, and a second chute is arranged in the opening; under the mutual matching of the second limiting block and the guide groove, the cover plate can move along the guide groove, so that the cover plate and the box body form a whole, and the cover plate is prevented from being lost after being detached from the box body; when the cover plate is installed, the cover plate is pushed along the guide groove, the second limiting block moves to the position above the opening and pushes the cover plate downwards, and the second limiting block moves into the second movable groove under the action of the second chute, so that the cover plate is prevented from being installed by the second limiting block; after the apron lid was on the box body, the spacing spring of second produced thrust to the second stopper, made the second stopper produce toward the outer motion trend, and the second stopper supports on the box body inner wall, mutually supported with first stopper and plays the fixed action to the apron, promotes the connection effect of apron and box body.
The cover plate is provided with a handle, the handle is provided with a second movable cavity, the cover plate is provided with a third movable cavity, the second movable cavity, the first movable groove and the second movable groove are communicated through the third movable cavity, the bottom of the third movable cavity is provided with a second through hole, a push block penetrates through the second through hole, when the push block moves upwards, the first limiting block moves towards the first movable groove, and the second limiting block moves towards the second movable groove; the cover plate can be conveniently taken down from the box body under the arrangement of the handle, and an acting point is provided for grabbing the cover plate; when the cover plate is taken down, the push block is pushed into the second movable cavity, the push block moves towards the top of the second movable cavity, the first limiting block moves into the first movable groove, and the second limiting block moves into the second movable groove, so that the first limiting block and the second limiting block are separated from contact with the inner wall of the box body, the cover plate is directly taken out of the box body, and the cover plate disassembly difficulty is reduced; locate the handle bottom with the ejector pad, touch the ejector pad when avoiding the maloperation, guarantee the cooperation effect of stopper and box body inner wall, guarantee the linkage effect of apron and box body.
A third transmission shaft is arranged on the side wall of the second movable cavity, a fourth transmission wheel in transmission fit with the push block is arranged on the third transmission shaft, a first connecting rope is arranged on the first limiting block, a second connecting rope is arranged on the second limiting block, and the first connecting rope and the second connecting rope are respectively wound on the third transmission shaft; when the pushing block is pushed to move upwards, the pushing block is in contact with the side wall of the fourth driving wheel, the fourth driving wheel is driven to rotate under the action of the pushing block, the third driving shaft rotates along with the fourth driving wheel, the first connecting rope and the second connecting rope are wound on the third driving shaft, and the first limiting block and the second limiting block are pulled to move towards the first movable groove and the second movable groove under the action of the first connecting rope and the second connecting rope, so that the cover plate can be directly taken out of the box body; after the cover plate is detached from the box body, the push block moves towards the outer side of the second movable cavity, the connecting rope rotates out of the third transmission shaft, the limiting block extends out of the movable groove again, and normal use of the cover plate is guaranteed.
A first connecting pipe matched with the wiring port is arranged on the side wall of the box body, a third movable groove is arranged on the first connecting pipe, a plurality of fourth movable grooves are arranged at the bottom of the third movable groove, a first sleeve ring is arranged in the third movable groove, a fixed rod is movably connected to the inner wall of the first sleeve ring, and the middle part of the fixed rod is rotatably connected in the fourth movable grooves; when the electric wire is inserted into the wiring port, the electric wire penetrates through the first connecting pipe, and the electric wire is assisted and fixed under the action of the first connecting pipe, so that the matching effect of the electric wire and the wiring box is improved; after the electric wire is inserted into first connecting pipe, rotate first lantern ring, dead lever one end removes along with first lantern ring, and the dead lever rotates around the tie point, makes the dead lever other end rotate to inside the first connecting pipe, and the dead lever contacts with the electric wire lateral wall, promotes the fixed effect of first connecting pipe to the electric wire under the dead lever effect, fixes the electric wire in first connecting pipe, guarantees the connection effect of electric wire and terminal box.
A second sleeve ring is sleeved on the first sleeve ring, a sliding block is arranged on the inner wall of the second sleeve ring, a sliding groove matched with the sliding block is formed in the side wall of the first sleeve ring, a third limiting block is arranged on the inner wall of the third movable groove, and a second limiting groove matched with the third limiting block is formed in the side wall of the second sleeve ring; after the electric wire is inserted into the first connecting pipe, the first sleeve ring is rotated, the first sleeve ring drives the fixing rod to rotate, and the fixing rod is contacted with the side wall of the electric wire to fix the electric wire; promote the second lantern ring, the second lantern ring moves toward third activity groove one side, makes the third stopper insert the second spacing inslot, under the mutually supporting of third stopper and second spacing groove, plays limiting displacement to the second lantern ring, and is fixed with the second lantern ring to fix first lantern ring at third activity inslot, guarantee the contact effect of dead lever and electric wire, play good fixed effect to the electric wire.
The invention has the following advantages: the high-temperature resistance of the junction box is improved by a diode welding mode and high-temperature resistant materials, the junction box is prevented from being damaged under a high-temperature working condition, and the service life of the junction box is prolonged; when the junction box works, airflow enters the junction box under the arrangement of the through grooves, and the junction box is cooled by the action of external airflow, so that the temperature in the junction box is prevented from being rapidly increased; the auxiliary air flow of the cooling liquid in the cooling pipe cools the junction box, so that the cooling effect of the junction box is improved, and safety accidents caused by overhigh temperature of the junction box are prevented.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a first cross-sectional view of the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 2.
FIG. 4 is a second cross-sectional view of the present invention.
Fig. 5 is an enlarged view of fig. 4 at B.
Fig. 6 is a third schematic cross-sectional view of the present invention.
Fig. 7 is an enlarged view of fig. 6 at C.
Fig. 8 is a fourth schematic cross-sectional view of the present invention.
Fig. 9 is an enlarged view of fig. 8 at D.
Fig. 10 is an enlarged view of fig. 8 at E.
Fig. 11 is a cross-sectional view of the fifth embodiment of the present invention.
Fig. 12 is an enlarged view of fig. 11 at F.
Fig. 13 is a sixth schematic sectional view of the present invention.
Fig. 14 is an enlarged view at G in fig. 13.
Fig. 15 is a schematic cross-sectional view seven of the present invention.
Fig. 16 is an enlarged view at H in fig. 15.
Fig. 17 is a schematic sectional view eight of the present invention.
Fig. 18 is an enlarged view at I in fig. 17.
Detailed Description
As shown in fig. 1-18, a solar photovoltaic junction box with high heat resistance and heat dissipation performance comprises a bottom plate 3, a box body 1 arranged on the bottom plate 3, and a cover plate 2 arranged on the box body 1, wherein a copper sheet is arranged in the box body 1, a plurality of diodes are arranged on the copper sheet, a fixing block matched with the copper sheet is arranged in the box body 1, a wiring port is arranged on the side wall of the box body 1, pins of the diodes are welded on the copper sheet, the outer diameter of the diodes is 5.7mm, the total height of the whole product is 14mm, and the shape is small; the glue filling amount of the box body is only 20 ml; the bottom plate 3 and the box body 1 are made of heat-resistant materials, a plurality of through grooves are formed in the bottom plate 3, cooling pipes 31 are laid on the bottom plate 3, cooling liquid is filled in the cooling pipes, the cooling pipes are arranged on the bottom plate in a winding manner, and the contact area between the cooling liquid and the bottom plate is increased; when the junction box is used, the electric wire is inserted into the junction hole, so that the electric wire and the junction box form connection and matching, and electric energy generated on the photovoltaic panel can be conveniently carried; the high-temperature resistance of the junction box is improved by a diode welding mode and high-temperature resistant materials, the junction box is prevented from being damaged under a high-temperature working condition, and the service life of the junction box is prolonged; when the junction box works, airflow enters the junction box under the arrangement of the through grooves, and the junction box is cooled by the action of external airflow, so that the temperature in the junction box is prevented from being rapidly increased; the cooling liquid in the cooling pipe assists the airflow to cool the junction box, so that the cooling effect of the junction box is improved, and safety accidents caused by overhigh temperature of the junction box are prevented; under the mutual matching of the fixing block and the copper sheet, the copper sheet is effectively fixed in the junction box, so that the copper sheet has the function of conveying current under the action of the copper sheet, and the use reliability of the junction box is improved; meanwhile, under the mutual matching of the fixing block and the copper sheet, the copper sheet can be directly taken out of the junction box after the cover plate is opened, and the maintenance cost of the junction box is reduced.
A first movable cavity is arranged on the box body 1, a cavity communicated with the first movable cavity is arranged on the box body 1, compressed gas is filled in the cavity, a first connecting rod 34 is arranged on the bottom plate 3, the first connecting rod 34 penetrates through the first movable cavity, a first limiting plate 35 is arranged at one end of the first connecting rod 34, and a third limiting spring 36 is arranged on the first limiting plate 35; after the current rose through the temperature in the box body, high temperature in the box body transmits to the bottom plate, compressed gas is expanded after being heated, compressed gas moves toward first activity intracavity, promote first limiting plate toward the outside motion of first activity chamber under the atmospheric pressure effect, first limiting plate drives the bottom plate and removes, make bottom plate and box body phase separation, form the space between bottom plate and box body, make the air current directly contact with box body inside, increase the inside heat radiating area of box body, so that with the heat in the box body effluvium fast, promote the radiating effect to the box body, provide good guard action for the terminal box.
The bottom plate 3 is provided with an installation box 32, the installation box 32 is arranged on one side of the cooling pipe 31, the cooling pipe 31 is provided with a first through hole, a first driving wheel 324 is arranged in the installation box 32, a first driving shaft is arranged on the first driving wheel 324, the first driving shaft penetrates through the first through hole, and the first driving shaft is provided with a first fan blade; when the junction box is in normal use, the first driving wheel rotates, the first driving wheel drives the first transmission shaft to rotate, the first fan blades rotate along with the first transmission shaft, the cooling liquid in the cooling pipe is driven to be in a motion state under the action of the first fan blades, the cooling liquid flows in the cooling pipe, the cooling liquid is guaranteed to be heated uniformly, the cooling liquid is effectively utilized, and the cooling effect of the cooling liquid on the junction box is improved.
A second driving wheel 321 matched with the first driving wheel 324 is arranged in the installation box 32, a second transmission shaft is arranged on the second driving wheel 321, a third driving wheel 322 is arranged on the second transmission shaft, a plurality of second fan blades 323 are arranged on the third driving wheel 322, and a through cavity matched with the second fan blades 323 is arranged on the side wall of the installation box 32; the side wall of the installation box is provided with a wind-collecting cover 33 matched with the through cavity, and more air flow is guided into the cavity under the arrangement of the wind-collecting cover, so that the second fan blade rotates under the action of the air flow; when the junction box is used, airflow enters from the through cavity, the airflow in the through cavity directly impacts the second fan blades, the second fan blades rotate under the action of the airflow, the second fan blades drive the second transmission shaft to rotate, the second transmission shaft drives the third transmission wheel to rotate, and under the mutual matching of the second transmission wheel and the first transmission wheel, the first transmission wheel drives the first transmission shaft to rotate to provide power for the rotation of the first fan blades so as to enable cooling liquid to be in a motion state under the action of the first fan blades, the cooling liquid flows in the cooling pipe, and the cooling effect of the cooling liquid on the junction box is improved; the third driving wheel is driven to rotate under the action of air flow, an additional power source is not needed, wind energy is reasonably utilized, the structure of the junction box is simplified, and the cost of the junction box is reduced.
A first movable groove is formed in the cover plate 2, a first limiting block 15 is arranged in the first movable groove, a first limiting spring is arranged on the side wall of the first limiting block 15 and fixedly connected in the first movable groove, a first limiting groove matched with the first limiting block 15 is formed in the inner wall of the box body 1, and a first chute is formed in the bottom of the first limiting block 15; when the cover plate is installed, the cover plate is pressed into the box body, the first limiting block is prevented from obstructing the installation of the cover plate under the action of the first chute, and the cover plate is normally installed into the box body; along with the downward motion of apron, first stopper pushes first stopper to first movable groove with the contact of box body lateral wall, moves to first spacing inslot back to first spacing groove one side until first stopper, pushes first stopper to first spacing inslot under first spacing spring action, makes first stopper and first spacing groove form the cooperation, fixes the apron in the box body, guarantees the linkage effect of apron and box body.
A second movable groove is formed in the cover plate 2, a second limiting block 14 is arranged in the second movable groove, a second limiting spring is arranged on the side wall of the second limiting block 14, and the second limiting spring is fixedly connected to the inner wall of the second movable groove; a connecting plate 11 is arranged on the box body 1, a guide groove matched with the second limiting block 14 is arranged on the connecting plate 11, an opening matched with the second limiting block 14 is formed in the bottom of the guide groove, and a second chute 111 is arranged in the opening; under the mutual matching of the second limiting block and the guide groove, the cover plate can move along the guide groove, so that the cover plate and the box body form a whole, and the cover plate is prevented from being lost after being detached from the box body; when the cover plate is installed, the cover plate is pushed along the guide groove, the second limiting block moves to the position above the opening and pushes the cover plate downwards, and the second limiting block moves into the second movable groove under the action of the second chute, so that the cover plate is prevented from being installed by the second limiting block; after the apron lid was on the box body, the spacing spring of second produced thrust to the second stopper, made the second stopper produce toward the outer motion trend, and the second stopper supports on the box body inner wall, mutually supported with first stopper and plays the fixed action to the apron, promotes the connection effect of apron and box body.
The cover plate 2 is provided with a handle 21, the handle 21 is provided with a second movable cavity, the cover plate 2 is provided with a third movable cavity, the second movable cavity, the first movable groove and the second movable groove are communicated through the third movable cavity, the bottom of the third movable cavity is provided with a second through hole, a push block 211 is arranged in the second through hole in a penetrating manner, when the push block 211 moves upwards, the first limit block 15 moves into the first movable groove, and the second limit block 14 moves into the second movable groove; the cover plate can be conveniently taken down from the box body under the arrangement of the handle, and an acting point is provided for grabbing the cover plate; when the cover plate is taken down, the push block is pushed into the second movable cavity, the push block moves towards the top of the second movable cavity, the first limiting block moves into the first movable groove, and the second limiting block moves into the second movable groove, so that the first limiting block and the second limiting block are separated from contact with the inner wall of the box body, the cover plate is directly taken out of the box body, and the cover plate disassembly difficulty is reduced; locate the handle bottom with the ejector pad, touch the ejector pad when avoiding the maloperation, guarantee the cooperation effect of stopper and box body inner wall, guarantee the linkage effect of apron and box body.
A third transmission shaft is arranged on the side wall of the second movable cavity, a fourth transmission wheel 213 which is in transmission fit with the push block 211 is arranged on the third transmission shaft, a first connecting rope is arranged on the first limiting block 15, a second connecting rope is arranged on the second limiting block 14, and the first connecting rope and the second connecting rope are respectively wound on the third transmission shaft; the top of the push block is provided with a return spring 212, and the push block always tends to move downwards under the action of the return spring, so that the first limiting block and the second limiting block extend out of the first movable groove and the second movable groove when the push block is not stressed; when the pushing block is pushed to move upwards, the pushing block is in contact with the side wall of the fourth driving wheel, the fourth driving wheel is driven to rotate under the action of the pushing block, the third driving shaft rotates along with the fourth driving wheel, the first connecting rope and the second connecting rope are wound on the third driving shaft, and the first limiting block and the second limiting block are pulled to move towards the first movable groove and the second movable groove under the action of the first connecting rope and the second connecting rope, so that the cover plate can be directly taken out of the box body; after the cover plate is detached from the box body, the push block moves towards the outer side of the second movable cavity, the connecting rope rotates out of the third transmission shaft, the limiting block extends out of the movable groove again, and normal use of the cover plate is guaranteed.
A first connecting pipe 12 matched with the wiring port is arranged on the side wall of the box body 1, a third movable groove is arranged on the first connecting pipe 12, a plurality of fourth movable grooves are arranged at the bottom of the third movable groove, a first sleeve ring 121 is arranged in the third movable groove, a fixed rod 124 is movably connected to the inner wall of the first sleeve ring 121, and the middle part of the fixed rod 124 is rotatably connected in the fourth movable groove; when the electric wire is inserted into the wiring port, the electric wire penetrates through the first connecting pipe, and the electric wire is assisted and fixed under the action of the first connecting pipe, so that the matching effect of the electric wire and the wiring box is improved; after the electric wire is inserted into first connecting pipe, rotate first lantern ring, dead lever one end removes along with first lantern ring, and the dead lever rotates around the tie point, makes the dead lever other end rotate to inside the first connecting pipe, and the dead lever contacts with the electric wire lateral wall, promotes the fixed effect of first connecting pipe to the electric wire under the dead lever effect, fixes the electric wire in first connecting pipe, guarantees the connection effect of electric wire and terminal box.
The first sleeve ring 121 is sleeved with a second sleeve ring 122, a sliding block is arranged on the inner wall of the second sleeve ring 122, a sliding groove matched with the sliding block is arranged on the side wall of the first sleeve ring 121, a third limiting block 123 is arranged on the inner wall of the third movable groove, and a second limiting groove matched with the third limiting block 123 is arranged on the side wall of the second sleeve ring 122; after the electric wire is inserted into the first connecting pipe, the first sleeve ring is rotated, the first sleeve ring drives the fixing rod to rotate, and the fixing rod is contacted with the side wall of the electric wire to fix the electric wire; promote the second lantern ring, the second lantern ring moves toward third activity groove one side, makes the third stopper insert the second spacing inslot, under the mutually supporting of third stopper and second spacing groove, plays limiting displacement to the second lantern ring, and is fixed with the second lantern ring to fix first lantern ring at third activity inslot, guarantee the contact effect of dead lever and electric wire, play good fixed effect to the electric wire.
A second connecting pipe 13 communicated with the cavity is arranged on the side wall of the box body, the middle part of the second connecting pipe is made of rubber, a first baffle 131 is arranged on the inner wall of the second connecting pipe, a sealing plate 132 is arranged on one side of the first baffle, a sealing spring 134 is arranged on the side wall of the sealing plate, a second connecting rod 133 is arranged on the inner wall of the second connecting pipe, and the sealing spring is fixedly connected to the second connecting rod; the sealing plate is provided with a plurality of third through holes which are circumferentially distributed on the sealing plate, the middle part of the sealing plate is also provided with a fourth through hole, the inner wall of the fourth through hole is provided with a second baffle plate, one side of the second baffle plate is provided with a sealing diaphragm 135, the sealing diaphragm is rotatably connected on the inner wall of the fourth through hole, one side of the sealing diaphragm is also provided with a support plate, and the support plate is made of plastic; when the temperature in the junction box rises, the compressed gas in the cavity expands by heating, the airflow enters the first movable cavity, the bottom plate is pushed to be far away from the box body, if the temperature in the junction box rises continuously, the gas cannot enter the first movable cavity continuously, the airflow pushes the sealing plate to move forwards, the sealing plate is separated from the first baffle, the second baffle provides supporting force for the sealing membrane, the sealing membrane cannot turn over, the third through hole is opened, the airflow enters the second connecting pipe from the third through hole, the airflow in the second connecting pipe extrudes the second connecting pipe to deform the second connecting pipe, and the contact effect of the airflow with the outside is increased when the airflow is in the second connecting pipe so as to play a role in radiating the airflow in the second connecting pipe; after the air flow in the cavity is cooled, the air flow of the second connecting pipe pushes away the sealing membrane, so that the fourth through hole is in an open state, and the air flow in the second connecting pipe is guided into the cavity to provide sufficient air flow for the cavity; under the second connecting pipe sets up, avoid causing the too big problem of air current expansion volume because of the terminal box high temperature, play the guard action to the terminal box, extension terminal box life.
The top of the second movable groove is provided with a fifth movable groove, the second limiting block is provided with a lug 141 matched with the fifth movable groove, the position of the second limiting block can be determined through the position of the lug, the second limiting block can be pushed to move in the second movable groove in a mode of pushing the lug, so that the cover plate can be taken out from the guide groove, the cover plate is completely taken down from the box body, and the maintenance difficulty of the cover plate is reduced.
Claims (10)
1. The utility model provides a solar photovoltaic terminal box with high heat-resisting heat dispersion, includes bottom plate (3), locates box body (1) on bottom plate (3) and locating apron (2) on box body (1), be equipped with the copper sheet in box body (1), be equipped with a plurality of diodes on the copper sheet, be equipped with in box body (1) with copper sheet matched with fixed block, be equipped with wiring port, its characterized in that on box body (1) lateral wall: diode pin weld in on the copper, bottom plate (3) with box body (1) are heat-resisting material and make, be equipped with on bottom plate (3) and be equipped with a plurality of logical grooves, still laid cooling tube (31) on bottom plate (3).
2. The solar photovoltaic junction box with high heat resistance and heat dissipation performance of claim 1, wherein: be equipped with first activity chamber on box body (1), be equipped with on box body (1) with the communicating cavity in first activity chamber, compressed gas is filled in the cavity, be equipped with head rod (34) on bottom plate (3), head rod (34) are worn to locate in the first activity intracavity, head rod (34) one end is equipped with first limiting plate (35), be equipped with third limiting spring (36) on first limiting plate (35).
3. The solar photovoltaic junction box with high heat resistance and heat dissipation performance of claim 1, wherein: be equipped with install bin (32) on bottom plate (3), install bin (32) are located cooling tube (31) one side, be equipped with first through-hole on cooling tube (31), be equipped with first drive wheel (324) in install bin (32), be equipped with first transmission shaft on first drive wheel (324), first transmission shaft wears to locate in the first through-hole, be equipped with first flabellum on the first transmission shaft.
4. The solar photovoltaic junction box with high heat resistance and heat dissipation performance of claim 3, wherein: be equipped with in install bin (32) with first drive wheel (324) matched with second drive wheel (321), be equipped with the second transmission shaft on second drive wheel (321), be equipped with third drive wheel (322) on the second transmission shaft, be equipped with a plurality of second flabellums (323) on third drive wheel (322), be equipped with on install bin (32) lateral wall with second flabellum (323) matched with logical chamber.
5. The solar photovoltaic junction box with high heat resistance and heat dissipation performance of claim 1, wherein: be equipped with first movable groove on apron (2), be equipped with first stopper (15) in the first movable groove, be equipped with first spacing spring on first stopper (15) lateral wall, first spacing spring link firmly in first movable groove, be equipped with on box body (1) inner wall with first stopper (15) matched with first spacing groove, first stopper (15) bottom is equipped with first chute.
6. The solar photovoltaic junction box with high heat resistance and heat dissipation performance of claim 1, wherein: a second movable groove is formed in the cover plate (2), a second limiting block (14) is arranged in the second movable groove, a second limiting spring is arranged on the side wall of the second limiting block (14), and the second limiting spring is fixedly connected to the inner wall of the second movable groove; the box body (1) is provided with a connecting plate (11), the connecting plate (11) is provided with a guide groove matched with the second limiting block (14), the bottom of the guide groove is provided with an opening matched with the second limiting block (14), and a second chute (111) is arranged in the opening.
7. The solar photovoltaic junction box with high heat resistance and heat dissipation performance of claim 1, wherein: be equipped with handle (21) on apron (2), be equipped with the second activity chamber on handle (21), be equipped with the third activity chamber on apron (2), the second activity chamber first movable groove reaches the second activity groove passes through the third activity chamber is linked together, third activity chamber bottom is equipped with the second through-hole, wear to be equipped with ejector pad (211) in the second through-hole, work as when ejector pad (211) up-movement, first stopper (15) are past first movable inslot motion, second stopper (14) are past second movable inslot motion.
8. The solar photovoltaic junction box with high heat resistance and heat dissipation performance of claim 7, wherein: be equipped with the third transmission shaft on the second activity chamber lateral wall, be equipped with on the third transmission shaft with ejector pad (211) transmission complex fourth drive wheel (213), be equipped with first connecting rope on first stopper (15), be equipped with the second on second stopper (14) and connect the rope, first connecting rope with the second is connected the rope and is twined respectively and locates on the third transmission shaft.
9. The solar photovoltaic junction box with high heat resistance and heat dissipation performance of claim 1, wherein: be equipped with on box body (1) lateral wall with wiring mouth matched with first connecting pipe (12), be equipped with the third activity groove on first connecting pipe (12), third activity tank bottom is equipped with a plurality of fourth activity grooves, be equipped with first lantern ring (121) in the third activity inslot, swing joint has dead lever (124) on first lantern ring (121) inner wall, dead lever (124) middle part rotatable coupling in the fourth activity inslot.
10. The solar photovoltaic junction box having high heat resistance and heat dissipation performance of claim 9, wherein: the sleeve is equipped with second lantern ring (122) on first lantern ring (121), be equipped with the slider on second lantern ring (122) inner wall, be equipped with on first lantern ring (121) lateral wall with slider matched with spout, be equipped with third stopper (123) on the third activity inslot wall, be equipped with on second lantern ring (122) lateral wall with third stopper (123) matched with second spacing groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010850754.1A CN111969946B (en) | 2019-12-12 | 2019-12-12 | Solar photovoltaic junction box |
| CN201911274728.2A CN110784172B (en) | 2019-12-12 | 2019-12-12 | Solar photovoltaic junction box with high heat-resisting and heat-dissipating performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911274728.2A CN110784172B (en) | 2019-12-12 | 2019-12-12 | Solar photovoltaic junction box with high heat-resisting and heat-dissipating performance |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010850754.1A Division CN111969946B (en) | 2019-12-12 | 2019-12-12 | Solar photovoltaic junction box |
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| Publication Number | Publication Date |
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| CN110784172A true CN110784172A (en) | 2020-02-11 |
| CN110784172B CN110784172B (en) | 2020-11-20 |
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| CN201911274728.2A Active CN110784172B (en) | 2019-12-12 | 2019-12-12 | Solar photovoltaic junction box with high heat-resisting and heat-dissipating performance |
| CN202010850754.1A Active CN111969946B (en) | 2019-12-12 | 2019-12-12 | Solar photovoltaic junction box |
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| CN202010850754.1A Active CN111969946B (en) | 2019-12-12 | 2019-12-12 | Solar photovoltaic junction box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116054733A (en) * | 2023-03-29 | 2023-05-02 | 苏州沪港科技股份有限公司 | Suspended photovoltaic wiring device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111969946B (en) | 2021-11-12 |
| CN110784172B (en) | 2020-11-20 |
| CN111969946A (en) | 2020-11-20 |
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