CN213125974U - Photovoltaic junction box and photovoltaic module - Google Patents
Photovoltaic junction box and photovoltaic module Download PDFInfo
- Publication number
- CN213125974U CN213125974U CN202021986653.9U CN202021986653U CN213125974U CN 213125974 U CN213125974 U CN 213125974U CN 202021986653 U CN202021986653 U CN 202021986653U CN 213125974 U CN213125974 U CN 213125974U
- Authority
- CN
- China
- Prior art keywords
- diode
- copper
- photovoltaic
- copper conductor
- pin
- 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.)
- Active
Links
Images
Classifications
-
- 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
- Photovoltaic Devices (AREA)
Abstract
The utility model provides a photovoltaic terminal box and photovoltaic module, include: the diode and the two copper conductors are arranged in the box body; the diode comprises a diode main body and two wing-shaped pins arranged on two opposite side edges of the diode main body; the airfoil-shaped pins extend in a direction away from the side edges; the wing section pin has relative first face and the second face that sets up, the first face and the second face of wing section pin all with the surface laminating of copper conductor, the utility model discloses diode in the well photovoltaic terminal box produces the heat, the copper conductor of the wing section pin contact with the diode is used for exporting and giving off the heat that the diode produced, thereby all with the surface laminating of copper conductor the first face and the second face of the wing section pin of diode in with the photovoltaic terminal box, make the area of contact of diode and copper conductor increase, improved the radiating efficiency of photovoltaic terminal box, reduced the inside temperature of photovoltaic terminal box, and then guaranteed the life and the performance of each device in the terminal box.
Description
Technical Field
The utility model relates to a photovoltaic technology field especially relates to a photovoltaic terminal box and photovoltaic module.
Background
With the development of photovoltaic power generation technology and the requirement of human society for environmental protection, photovoltaic power generation components as a new clean energy product have gradually entered into the production and life of people.
At present, a junction box is usually installed on a photovoltaic module and used for connecting an external circuit, when partial cells of the photovoltaic module are prevented from being shielded, the shielded cells do not generate electricity any more and become loads, so that the electricity generated by other photovoltaic modules is consumed, the electricity generation efficiency of the photovoltaic module is influenced, a bypass diode is arranged in the photovoltaic junction box, pins on two sides of the bypass diode are welded with a copper conductor in the photovoltaic junction box, so that the current generated by the cells is led out through a bus bar connected with the copper conductor, the current flows through a diode, so that the diode generates heat, the copper conductor welded with the diode can also play a role of heat dissipation, the heat generated by the diode is led out and dissipated, so that the temperature in the junction box is ensured to be located in the temperature resistance limit range of devices in the junction boxes such as the diode, and the photovoltaic module is prevented from being.
However, in the current scheme, the heat is radiated in a way of radiating through a copper conductor welded with the diode, the radiating efficiency is low, so that the heat generated by the diode in the junction box cannot be quickly led out, the temperature in the junction box is too high, and the service life and the performance of each device in the junction box are reduced.
Disclosure of Invention
The utility model provides a photovoltaic terminal box and photovoltaic module to when solving among the prior art and dispelling the heat through the copper conductor with diode welded, the radiating efficiency is lower, leads to the too high problem of temperature in the photovoltaic terminal box.
In order to solve the technical problem, the utility model provides a photovoltaic terminal box, photovoltaic terminal box includes:
the diode and the two copper conductors are arranged in the box body, and the diode is electrically connected with the copper conductors;
the diode comprises a diode main body and two wing-shaped pins arranged on two opposite side edges of the diode main body; the airfoil pin extends in a direction away from the side edge;
the airfoil pin is connected with the copper conductor, the airfoil pin is provided with a first surface and a second surface which are oppositely arranged, and the first surface and the second surface of the airfoil pin are both attached to the surface of the copper conductor.
Optionally, the copper conductor includes a first copper sheet and a second copper sheet which are oppositely disposed, a first surface of each airfoil-shaped pin is attached to a surface of the first copper sheet, and a second surface of each airfoil-shaped pin is attached to a surface of the second copper sheet.
Optionally, the first copper sheet and the second copper sheet are connected with each other, or the first copper sheet and the second copper sheet are in an integrated structure;
the first copper sheet and the second copper sheet form any one of a U-shaped structure and a V-shaped structure.
Optionally, the diode body and the two airfoil-shaped pins are both cubes, and the height directions of the diode body and the two airfoil-shaped pins are parallel to each other.
Optionally, the copper conductor further comprises a copper conductor main body sheet electrically connected with the bus bar, and the copper conductor main body sheet is connected with the first copper sheet;
wherein the copper conductor body sheet is perpendicular to the first copper sheet;
a groove structure is formed between the first copper sheet and the second copper sheet, the airfoil-shaped pin is arranged in the groove structure, and the distance between two surfaces, oppositely arranged on the first copper sheet and the second copper sheet, in the groove structure is matched with the thickness of the airfoil-shaped pin.
Optionally, the lengths of the first copper sheet and the second copper sheet are smaller than the length of the copper conductor main body sheet.
Optionally, the length of the first surface of the airfoil pin is smaller than the length of the first copper sheet, and the length of the second surface of the airfoil pin is smaller than the length of the second copper sheet.
Optionally, the box body further comprises a photovoltaic cable;
the photovoltaic cable is electrically connected with the copper conductor.
Optionally, a cable crimping groove, a bonding pad and an opening are arranged on the copper conductor main body sheet electrically connected with the bus bar;
the photovoltaic cable is in contact with the cable crimping groove, and the pad and the opening are connected with the bus bar.
In order to solve the technical problem, the utility model also provides a photovoltaic module, photovoltaic module contains above-mentioned photovoltaic terminal box.
The utility model provides a photovoltaic terminal box and photovoltaic module, the photovoltaic terminal box includes: the diode and the two copper conductors are arranged in the box body, and the diode is electrically connected with the copper conductors; the diode comprises a diode main body and two wing-shaped pins arranged on two opposite side edges of the diode main body; the airfoil-shaped pins extend in a direction away from the side edges; wing section pin is connected with the copper conductor, and the wing section pin has relative first face and the second face that sets up, and the first face and the second face of wing section pin all laminate with the surface of copper conductor, the utility model discloses diode in the well photovoltaic terminal box produces the heat, and the copper conductor of the wing section pin contact with the diode is used for deriving and giving off the heat that the diode produced to all laminate with the surface of copper conductor with the first face and the second face of the wing section pin of diode in the photovoltaic terminal box, make the area of contact of diode and copper conductor increase, improved the radiating efficiency of photovoltaic terminal box, reduced the inside temperature of photovoltaic terminal box, and then guaranteed the life and the performance of each device in the terminal box.
Drawings
Fig. 1 is a schematic structural diagram of a photovoltaic junction box provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dual-wing diode according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a conventional photovoltaic junction box according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first copper conductor according to an embodiment of the present invention;
fig. 5 is a schematic assembly diagram of a diode according to an embodiment of the present invention;
fig. 6 is a schematic perspective structure diagram of a photovoltaic junction box provided by an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The present invention provides a photovoltaic junction box and a photovoltaic module, which are described in detail below by listing several specific embodiments.
Fig. 1 shows a schematic structural diagram of a photovoltaic junction box according to an embodiment of the present invention, as shown in fig. 1, the photovoltaic junction box includes a box body 10, and a diode 20 and two copper conductors 40, respectively a first copper conductor 41 and a second copper conductor 42, arranged inside the case 10, the diode 20 being electrically connected to said copper conductors 40, wherein, the diode 20 comprises a diode main body 21, and two airfoil-shaped pins 30 arranged on two opposite side edges of the diode main body 21, which are respectively a first pin 31 and a second pin 32, the airfoil-shaped pins 30 extend along the direction deviating from the side edges, i.e., the diode 20 is a wing diode, since the wing diode is small in size in the thickness direction, can be used as a chip device and is suitable for surface mounting in a packaging form, so that the packaged component can have a smaller size.
The airfoil pin 30 is connected to the copper conductor 40, the airfoil pin 30 has a first surface and a second surface which are oppositely arranged, the first surface and the second surface of the airfoil pin 30 are both attached to the surface of the copper conductor 40, for example, the first surface 311 and the second surface 312 of the first pin 31 are respectively attached to the surface of the first copper conductor 41, and the first surface 321 and the second surface 322 of the second pin 32 are respectively attached to the surface of the second copper conductor 42.
Specifically, fig. 2 shows a structural schematic diagram of a two wing section diodes that embodiment of the present invention provides, as shown in fig. 2, diode 20 inside the photovoltaic junction box includes two wing section pins 30, is first pin 31 and second pin 32 respectively, and to diode main part 21 that diode 20 inside utilized epoxy shell encapsulation to obtain, to two wing section diodes, including two wing section pins 30, the first face of first pin 31 is 311 and second face 312 is used for laminating with the surface of first copper conductor 41, and the first face of second pin 32 is 321 and second face 322 is used for laminating with the surface of second copper conductor 42.
Fig. 3 shows a schematic structural diagram of a conventional photovoltaic junction box provided by an embodiment of the present invention, as shown in fig. 3, in the conventional photovoltaic junction box, a diode 20 inside the photovoltaic junction box includes two airfoil-shaped pins 30, which are respectively a first pin 31 and a second pin 32, wherein the first pin 31 has only one contact surface to be attached to a surface of a first copper conductor 41 in two copper conductors 40, and the second pin 32 also has only one contact surface to be attached to a surface of a second copper conductor 42 in two copper conductors 40.
Therefore, the utility model discloses in, because two contact surfaces of wing type pin respectively with the surface laminating of copper conductor in the diode, for the photovoltaic terminal box of traditional only having the surface laminating of a contact surface and copper conductor, the utility model discloses diode in the well photovoltaic terminal box increases with the area of contact of copper conductor, has improved the radiating efficiency of photovoltaic terminal box, has reduced the inside temperature of photovoltaic terminal box, and then has guaranteed the life and the performance of each device in the terminal box.
To sum up, the embodiment of the utility model provides a pair of photovoltaic terminal box, include: the diode and the two copper conductors are arranged in the box body, and the diode is electrically connected with the copper conductors; the diode comprises a diode main body and two wing-shaped pins arranged on two opposite side edges of the diode main body; the airfoil-shaped pins extend in a direction away from the side edges; wing section pin is connected with the copper conductor, and the wing section pin has relative first face and the second face that sets up, and the first face and the second face of wing section pin all laminate with the surface of copper conductor, the utility model discloses diode in the well photovoltaic terminal box produces the heat, and the copper conductor of the wing section pin contact with the diode is used for deriving and giving off the heat that the diode produced to all laminate with the surface of copper conductor with the first face and the second face of the wing section pin of diode in the photovoltaic terminal box, make the area of contact of diode and copper conductor increase, improved the radiating efficiency of photovoltaic terminal box, reduced the inside temperature of photovoltaic terminal box, and then guaranteed the life and the performance of each device in the terminal box.
As shown in fig. 1, for a double wing diode, the diode 20 includes two wing pins 30, namely a first pin 31 and a second pin 32, in the photovoltaic junction box, the single wing pin 30 is in contact with a single copper conductor 40, so that the contact between the copper conductor 40 and the wing pin 30 is utilized to conduct away the heat generated on the diode 20, and therefore, for a double wing diode, the photovoltaic junction box also includes two copper conductors 40, namely a first copper conductor 41 and a second copper conductor 42.
Optionally, the copper conductor includes a first copper sheet and a second copper sheet which are oppositely disposed, a first surface of each airfoil pin of the diode is attached to a surface of the first copper sheet, and a second surface of each airfoil pin is attached to a surface of the second copper sheet.
Optionally, the first copper sheet and the second copper sheet may be connected to each other, and the first copper sheet and the second copper sheet may also be in an integrated structure, wherein the first copper sheet and the second copper sheet may form any one of a U-shaped structure and a V-shaped structure, so as to be attached to two surfaces of an airfoil-shaped pin of the diode.
Fig. 4 shows a schematic structural diagram of a first copper conductor according to an embodiment of the present invention, as shown in fig. 4, the first copper conductor 41 includes a first copper sheet 411 and a second copper sheet 412 which are oppositely disposed, referring to fig. 1, in a case that the diode 20 is connected to the first copper conductor 41 and the second copper conductor 42, the first surface 311 of the first pin 31 of the diode 20 is attached to a surface of the first copper sheet 411 of the first copper conductor 41, and the second surface 312 of the first pin 31 is attached to a surface of the second copper sheet 412 of the first copper conductor 41; similarly, referring to fig. 1, the second copper conductor 42 includes a first copper sheet 421 and a second copper sheet 422 that are oppositely disposed, the first surface 321 of the second pin 32 of the diode 20 is attached to the surface of the first copper sheet 421 of the second copper conductor 42, and the second surface 322 of the second pin 32 is attached to the surface of the second copper sheet 422 of the second copper conductor 42.
Optionally, the diode main body and the two airfoil-shaped pins in the diode are both cubes, the height directions of the diode main body and the two airfoil-shaped pins are parallel to each other, the height direction of the diode main body is parallel to the direction of the edge with the smallest size in the diode main body with the cube structure, and the height direction of the airfoil-shaped pins is parallel to the direction of the edge with the smallest size in the airfoil-shaped pins with the cube structure.
Referring to fig. 2, the diode 20 inside the photovoltaic junction box includes a diode main body 21, and two wing pins 30 disposed on two opposite sides of the diode main body 21, which are a first pin 31 and a second pin 32, respectively, the first pin 31 and the second pin 32 extend in a direction away from the side of the diode main body 21, the diode main body 21 and the two wing pins 30 are both cubic, and the height directions of the diode main body 21 and the two wing pins 30 are parallel to each other, so that the height of the diode is small, and when the diode is disposed in the photovoltaic junction box, the size of the photovoltaic junction box can be reduced.
Optionally, the copper conductor further comprises a copper conductor main body sheet electrically connected with the bus bar, so that current generated by the photovoltaic effect of the cell sheet in the photovoltaic module can be led out to the copper conductor main body sheet through the bus bar. The copper conductor main body piece with first copper sheet is connected, just copper conductor main body piece with first copper sheet is perpendicular, simultaneously, first copper sheet with form groove structure between the second copper sheet, the wing section pin setting of diode is in the groove structure, just in the groove structure first copper sheet with the distance between two surfaces that the second copper sheet set up relatively, with the thickness phase-match of wing section pin to can be with the wing section pin setting of diode in form groove structure between first copper sheet with the second copper sheet, realize the vertical setting of diode in photovoltaic terminal box.
Fig. 5 shows an assembly diagram of a diode provided by an embodiment of the present invention, and as shown in fig. 5, the first copper conductor 41 further includes a copper conductor main body sheet 416, the copper conductor main body sheet 416 of the first copper conductor 41 is connected to the first copper sheet 411 of the first copper conductor 41, and the copper conductor main body sheet 416 is perpendicular to the first copper sheet 411, that is, the first copper sheet 411 and the second copper sheet 412 are vertically disposed on the copper conductor main body sheet 416. The first copper sheet 411 and the second copper sheet 412 of the first copper conductor 41 are in an integrated structure of a U-shaped structure, so that a U-shaped groove structure is formed between the first copper sheet 411 and the second copper sheet 412, the distance between two surfaces of the groove structure, where the first copper sheet 411 and the second copper sheet 412 are oppositely arranged, matches the thickness of the first pin 31 of the diode 20, so that the first pin 31 of the diode 20 can be arranged between the first copper sheet 411 and the second copper sheet 412 to form the groove structure, the first surface 311 of the first pin 31 of the diode 20 is attached to the first surface of the first copper sheet 411, the second surface 312 of the first pin 31 of the diode 20 is attached to the second surface of the second copper sheet 412, and since the first surface with a larger area in the first copper sheet 411 is used for contacting the first surface 311 with a larger area in the first pin 31 of the diode 20, the second surface with larger area in the second copper sheet 412 is used for contacting with the second surface 312 with larger area in the first pin 31 of the diode 20, so that the contact area between the first copper conductor 41 and the first pin 31 of the diode 20 is larger, and the heat dissipation efficiency is improved.
Referring to fig. 3, the diode 20 is transversely disposed on the first copper conductor 41, and in contrast to the fact that the diode is transversely disposed on the first copper conductor, the width of the photovoltaic junction box can be reduced by vertically disposing the diode on the first copper conductor, so that the usage amount of the box body of the photovoltaic junction box is reduced, and the cost is saved; meanwhile, the space between the bonding pads of the wire box is ensured to be small enough, a photovoltaic cable is convenient to penetrate through the strip for welding, and the using amount of the photovoltaic cable is reduced; in addition, the photovoltaic junction box is compatible with a photovoltaic module with double-sided power generation at the present stage, so that the smaller the size of the photovoltaic junction box is, the better the size of the photovoltaic junction box is, the smaller the blank area without a battery sheet on the back of the photovoltaic module is, and the higher the power generation efficiency of the photovoltaic module is.
Similarly, the second copper conductor 42 further includes a copper conductor main body sheet 426, the copper conductor main body sheet 426 of the second copper conductor 42 is connected to the first copper sheet 421 of the second copper conductor 42, and the copper conductor main body sheet 426 is perpendicular to the first copper sheet 421, that is, the first copper sheet 421 and the second copper sheet 422 are vertically disposed on the copper conductor main body sheet 426. The first copper sheet 421 and the second copper sheet 422 of the second copper conductor 42 are in an integrated structure of a U-shaped structure, so that a U-shaped groove structure is formed between the first copper sheet 421 and the second copper sheet 422, the distance between two surfaces of the first copper sheet 421 and the second copper sheet 422 which are oppositely arranged in the groove structure is matched with the thickness of the second pin 32 of the diode 20, so that the second pin 32 of the diode 20 can be arranged in the groove structure formed between the first copper sheet 421 and the second copper sheet 422, the first surface 321 of the second pin 32 of the diode 20 is attached to the first surface of the first copper sheet 421, the second surface 322 of the second pin 32 of the diode 20 is attached to the second surface of the second copper sheet 422, and because the first surface with a larger area in the first copper sheet 421 is used for contacting with the first surface 321 with a larger area in the second pin 32 of the diode 20, the second surface with larger area in the second copper sheet 422 is used for contacting with the second surface 322 with larger area in the second pin 32 of the diode 20, so that the contact area between the second copper conductor 42 and the second pin 32 of the diode 20 is larger, and the heat dissipation efficiency is improved.
Referring to fig. 3, the diode 20 is transversely disposed on the second copper conductor 42, and in contrast to the fact that the diode is transversely disposed on the second copper conductor, the width of the photovoltaic junction box can be reduced by vertically disposing the diode on the second copper conductor, so that the usage amount of the box body of the photovoltaic junction box is reduced, and the cost is saved; meanwhile, the space between the bonding pads of the wire box is ensured to be small enough, a photovoltaic cable is convenient to penetrate through the strip for welding, and the using amount of the photovoltaic cable is reduced; in addition, the photovoltaic junction box is compatible with a photovoltaic module with double-sided power generation at the present stage, so that the smaller the size of the photovoltaic junction box is, the better the size of the photovoltaic junction box is, the smaller the blank area without a battery sheet on the back of the photovoltaic module is, and the higher the power generation efficiency of the photovoltaic module is.
Optionally, the lengths of the first copper sheet and the second copper sheet are smaller than the length of the copper conductor main body sheet.
Specifically, the length of the first copper sheet may be a dimension of the first copper sheet along a designated direction, the designated direction may be a direction in which the first pin of the airfoil pin of the diode points to the second pin, correspondingly, the length of the second copper sheet may also be a dimension of the second copper sheet along the designated direction, and the length of the copper conductor body sheet may also be a dimension of the copper conductor body sheet along the designated direction.
Referring to fig. 1, the designated direction a is a direction in which the first pin 31 points to the second pin 32 in the airfoil pin of the diode, for the first copper conductor 41, a dimension of the first copper sheet 411 in the first copper conductor 41 along the designated direction a is a length of the first copper sheet 411, a dimension of the second copper sheet 412 along the designated direction a is a length of the second copper sheet 412, and a dimension of the copper conductor main body sheet 416 along the designated direction a is a length of the copper conductor main body sheet 416, as shown in fig. 1, the lengths of the first copper sheet 411 and the second copper sheet 412 are smaller than the length of the copper conductor main body sheet 416, and likewise, the length of the first copper sheet 421 and the length of the second copper sheet 422 in the second copper conductor 42 are smaller than the length of the copper conductor main body sheet 426. When the diode 20 is assembled in the first copper conductor 41 and the second copper conductor 42, the length of the photovoltaic junction box can be reduced while the first pin 31 of the diode 20 is attached to the surface of the first copper conductor 41 and the second pin 32 is attached to the surface of the second copper conductor 42, so that the using amount of the box body of the photovoltaic junction box is saved, and the cost is saved; meanwhile, the space between the bonding pads of the wire box is ensured to be small enough, a photovoltaic cable is convenient to penetrate through the strip for welding, and the using amount of the photovoltaic cable is reduced; in addition, the photovoltaic junction box is compatible with a photovoltaic module with double-sided power generation at the present stage, so that the smaller the size of the photovoltaic junction box is, the better the size of the photovoltaic junction box is, the smaller the blank area without a battery sheet on the back of the photovoltaic module is, and the higher the power generation efficiency of the photovoltaic module is.
Optionally, the length of the first surface of the airfoil pin is smaller than the length of the first copper sheet, and the length of the second surface of the airfoil pin is smaller than the length of the second copper sheet.
Specifically, the length of the first surface of the airfoil pin may be a dimension of the first surface of the airfoil pin along a designated direction, the designated direction may be a direction in which the first pin of the diode points to the second pin, and correspondingly, the length of the second surface may also be a dimension of the second surface of the airfoil pin along the designated direction.
Referring to fig. 1, the designated direction a is a direction in which the first pin 31 points to the second pin 32 in the airfoil pin of the diode, and for the first copper conductor 41, a dimension of the first surface 311 of the first pin 31 of the diode 20 along the designated direction a is a length of the first surface 311, and a dimension of the first surface 312 along the designated direction a is a length of the second surface 312, as shown in fig. 1, a length of the first surface 311 of the first pin 31 is smaller than a length of the first copper sheet 411 of the first copper conductor 41, a length of the second surface 312 of the first pin 31 is smaller than a length of the second copper sheet 412 of the first copper conductor 41, and likewise, for the second copper conductor 42, a length of the first surface 321 of the second pin 32 of the diode 20 is smaller than a length of the first copper sheet 421 of the second copper conductor 42, and a length of the second surface 322 of the second pin 32 is smaller than a length of the second copper sheet 422 of the second copper conductor 42. When the diode 20 is assembled in the first copper conductor 41 and the second copper conductor 42, the heat dissipation areas of the first copper conductor 41 and the second copper conductor 42 can be increased while the first pin 31 of the diode 20 is attached to the surface of the first copper conductor 41 and the second pin 32 is attached to the surface of the second copper conductor 42, so that the heat dissipation efficiency of the photovoltaic junction box is improved.
Optionally, the box body further comprises a photovoltaic cable; wherein the photovoltaic cable is electrically connected with the copper conductor.
Referring to fig. 1, the box body 10 in the photovoltaic junction box further includes a photovoltaic cable 50, and the photovoltaic cable 50 is electrically connected to the first copper conductor 41, so that the current in the diode 20 is led out through the first copper conductor 41 and the photovoltaic cable 50, and the current led out through the bus bar electrically connected to the first copper conductor 41 can also be led out through the first copper conductor 41 and the photovoltaic cable 50.
Specifically, the diode in the photovoltaic junction box is a bypass diode of a photovoltaic module cell, when the photovoltaic module normally generates electricity, the diode is in a reverse bias state, only leakage current in microampere level flows through the diode in reverse direction, when partial cell pieces of the photovoltaic module are shielded, the hot spot effect can occur, at the moment, the shielded cell pieces do not generate electricity but become loads, the electric energy generated by other photovoltaic modules can be consumed, the generating efficiency is influenced, at the moment, the diode in the photovoltaic junction box can play a role of a bypass, so that current can pass through the diode in the forward direction, and no longer flows through the load cell, therefore, the diode is in a forward overcurrent state when the bypass function is realized, the diode needs to conduct forward current, because the wing section pin of diode and the surface laminating of copper conductor, simultaneously, photovoltaic cable and copper conductor electric connection, consequently, can realize exporting through copper conductor and photovoltaic cable with the electric current in the diode.
Optionally, a cable crimping groove, a pad and an opening may be further disposed on the copper conductor main body sheet electrically connected to the bus bar, wherein the photovoltaic cable is in contact with the cable crimping groove, the pad is in contact with the opening and the bus bar, and the pad is welded to the opening to achieve electrical connection between the bus bar and the photovoltaic cable, so that current led out through the bus bar is led out through the copper conductor main body sheet and the photovoltaic cable.
Referring to fig. 1, a cable crimping groove 413, a pad 414 and an opening 415 are further formed on the copper conductor body piece 416 of the first copper conductor 41, wherein the photovoltaic cable connected to the first copper conductor 41 is in contact with the cable crimping groove 413, and the pad 414 and the opening 415 are in contact with the bus bar, so that the bus bar is welded to the copper conductor body piece 416 of the first copper conductor 41.
Referring to fig. 5, the copper conductor body piece 426 of the second copper conductor 42 is also provided with a cable crimp groove 423, a pad 424 and an opening 425, wherein the photovoltaic cable connected to the second copper conductor 42 is in contact with the cable crimp groove 423, and the pad 424 and the opening 425 are in contact with the bus bar, thereby achieving welding of the bus bar to the copper conductor body piece 426 of the second copper conductor 42.
Optionally, the first copper conductor may further be provided with a mounting positioning hole, so that the first copper conductor may be fixed in the photovoltaic junction box through the mounting positioning hole.
Fig. 6 shows a schematic perspective view of a photovoltaic junction box provided by an embodiment of the present invention, as shown in fig. 6, the first copper conductor 41 may further be provided with an installation positioning hole 417, so that the first copper conductor 41 may be located in the photovoltaic junction box through the installation positioning hole 417, and similarly, the second copper conductor 42 may also be provided with an installation positioning hole 427, so that the second copper conductor 42 may be fixed in the photovoltaic junction box through the installation positioning hole 427.
Optionally, the diode may include a double-wing diode, referring to fig. 2, the double-wing diode 20 includes two wing pins 30, which are a first pin 31 and a second pin 32, respectively, the first pin 31 is attached to the surface of the first copper conductor to dissipate heat, and the second pin 32 is attached to the surface of the second copper conductor to dissipate heat.
It should be noted that the embodiment of the utility model provides a pair of photovoltaic terminal box is components of a whole that can function independently terminal box, can make photovoltaic module's connection length minimizing to the heat of dispersion diode for derive an electrode polarity, if this photovoltaic terminal box is anodal terminal box, then this photovoltaic terminal box is connected with photovoltaic module's anodal photovoltaic cable, if this photovoltaic terminal box is anodal terminal box, then this photovoltaic terminal box is connected with photovoltaic module's negative pole photovoltaic cable.
To sum up, the embodiment of the utility model provides a pair of photovoltaic terminal box, include: the diode and the two copper conductors are arranged in the box body, and the diode is electrically connected with the copper conductors; the diode comprises a diode main body and two wing-shaped pins arranged on two opposite side edges of the diode main body; the airfoil-shaped pins extend in a direction away from the side edges; wing section pin is connected with the copper conductor, and the wing section pin has relative first face and the second face that sets up, and the first face and the second face of wing section pin all laminate with the surface of copper conductor, the utility model discloses diode in the well photovoltaic terminal box produces the heat, and the copper conductor of the wing section pin contact with the diode is used for deriving and giving off the heat that the diode produced to all laminate with the surface of copper conductor with the first face and the second face of the wing section pin of diode in the photovoltaic terminal box, make the area of contact of diode and copper conductor increase, improved the radiating efficiency of photovoltaic terminal box, reduced the inside temperature of photovoltaic terminal box, and then guaranteed the life and the performance of each device in the terminal box.
In addition, the width of the photovoltaic junction box can be reduced by vertically placing the diode on the copper conductor, so that the using amount of a box body of the photovoltaic junction box is saved, and the cost is saved; meanwhile, the space between the bonding pads of the wire box is ensured to be small enough, a photovoltaic cable is convenient to penetrate through the strip for welding, and the using amount of the photovoltaic cable is reduced; in addition, the photovoltaic junction box is compatible with a photovoltaic module with double-sided power generation at the present stage, so that the smaller the size of the photovoltaic junction box is, the better the size of the photovoltaic junction box is, the smaller the blank area without a battery sheet on the back of the photovoltaic module is, and the higher the power generation efficiency of the photovoltaic module is.
In the present invention, a method for preparing a photovoltaic junction box as shown in fig. 1 includes:
(1) fixing the first copper conductor 41 and the second copper conductor 42 by adopting a tool;
(2) vertically inserting the diode 20 into the first copper conductor 41 and the second copper conductor 42, so that the first pin 31 of the diode 20 is inserted between the first copper sheet 411 and the second copper sheet 412 of the first copper conductor 41, and the second pin 32 of the diode 20 is inserted between the first copper sheet 421 and the second copper sheet 422 of the second copper conductor 42;
(3) adding solder paste on the first pin 31 and the second pin 32 of the diode 20;
(4) feeding the first copper conductor 41 and the second copper conductor 42 into a reflow soldering circuit, and cooling and solidifying the melted solder paste to obtain the first copper conductor 41 and the second copper conductor 42 with the diode 20 assembled;
(5) and (3) completing the assembly of the first copper conductor 41 and the second copper conductor 42 of the assembled diode 20 and the box body 10 to finally obtain the mounted photovoltaic junction box.
Furthermore, the utility model also provides a photovoltaic module who contains above-mentioned photovoltaic terminal box.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A photovoltaic junction box, comprising:
the diode and the two copper conductors are arranged in the box body, and the diode is electrically connected with the copper conductors;
the diode comprises a diode main body and two wing-shaped pins arranged on two opposite side edges of the diode main body; the airfoil pin extends in a direction away from the side edge;
the airfoil pin is connected with the copper conductor, the airfoil pin is provided with a first surface and a second surface which are oppositely arranged, and the first surface and the second surface of the airfoil pin are both attached to the surface of the copper conductor.
2. The photovoltaic junction box of claim 1,
the copper conductor comprises a first copper sheet and a second copper sheet which are oppositely arranged, the first surface of each airfoil-shaped pin is attached to the surface of the first copper sheet, and the second surface of each airfoil-shaped pin is attached to the surface of the second copper sheet.
3. The photovoltaic junction box of claim 2,
the first copper sheet and the second copper sheet are connected with each other, or the first copper sheet and the second copper sheet are in an integrated structure;
the first copper sheet and the second copper sheet form any one of a U-shaped structure and a V-shaped structure.
4. The photovoltaic junction box of claim 1,
the diode body and the two wing-shaped pins are both cubes, and the diode body and the two wing-shaped pins are parallel to each other in the height direction.
5. The photovoltaic junction box of claim 2, wherein the copper conductor further comprises a copper conductor body sheet electrically connected to a bus bar, the copper conductor body sheet being connected to the first copper sheet;
wherein the copper conductor body sheet is perpendicular to the first copper sheet;
a groove structure is formed between the first copper sheet and the second copper sheet, the airfoil-shaped pin is arranged in the groove structure, and the distance between two surfaces, oppositely arranged on the first copper sheet and the second copper sheet, in the groove structure is matched with the thickness of the airfoil-shaped pin.
6. The photovoltaic junction box of claim 5, wherein the first and second copper sheets have a length less than a length of the copper conductor body sheet.
7. The photovoltaic junction box of claim 5, wherein a length of the first face of the airfoil pin is less than a length of the first copper sheet and a length of the second face is less than a length of the second copper sheet.
8. The photovoltaic junction box of claim 5, wherein the box body further comprises a photovoltaic cable;
the photovoltaic cable is electrically connected with the copper conductor.
9. The photovoltaic junction box of claim 8, wherein the copper conductor body sheet electrically connected to the bus bar is provided with a cable crimping groove, a pad and an opening;
the photovoltaic cable is in contact with the cable crimping groove, and the pad and the opening are connected with the bus bar.
10. A photovoltaic module comprising the photovoltaic junction box of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021986653.9U CN213125974U (en) | 2020-09-11 | 2020-09-11 | Photovoltaic junction box and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021986653.9U CN213125974U (en) | 2020-09-11 | 2020-09-11 | Photovoltaic junction box and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213125974U true CN213125974U (en) | 2021-05-04 |
Family
ID=75661608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021986653.9U Active CN213125974U (en) | 2020-09-11 | 2020-09-11 | Photovoltaic junction box and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213125974U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328698A (en) * | 2021-08-02 | 2021-08-31 | 江苏泽润新材料有限公司 | Axial diode junction box and manufacturing method thereof |
| CN113765478A (en) * | 2021-08-24 | 2021-12-07 | 滁州隆基乐叶光伏科技有限公司 | Junction box, photovoltaic module and photovoltaic module manufacturing method |
| CN113938099A (en) * | 2021-09-15 | 2022-01-14 | 中节能太阳能科技（镇江）有限公司 | Photovoltaic terminal box with hydrophobic and heat dissipation function |
-
2020
- 2020-09-11 CN CN202021986653.9U patent/CN213125974U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328698A (en) * | 2021-08-02 | 2021-08-31 | 江苏泽润新材料有限公司 | Axial diode junction box and manufacturing method thereof |
| WO2023010645A1 (en) * | 2021-08-02 | 2023-02-09 | 江苏泽润新材料有限公司 | Axial diode junction box and manufacturing method therefor |
| US11973462B1 (en) | 2021-08-02 | 2024-04-30 | Zerun Co., Ltd | Axial diode junction box and method for manufacturing the same |
| CN113765478A (en) * | 2021-08-24 | 2021-12-07 | 滁州隆基乐叶光伏科技有限公司 | Junction box, photovoltaic module and photovoltaic module manufacturing method |
| CN113938099A (en) * | 2021-09-15 | 2022-01-14 | 中节能太阳能科技（镇江）有限公司 | Photovoltaic terminal box with hydrophobic and heat dissipation function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213125974U (en) | Photovoltaic junction box and photovoltaic module | |
| JP3852710B1 (en) | Terminal box for solar cell module | |
| JP3744531B1 (en) | Terminal box for solar cell module and rectifying element unit | |
| JP2005150277A (en) | Terminal box for solar cell module | |
| CN111969947A (en) | Photovoltaic module bypass element assembly with excellent heat dissipation performance and junction box | |
| CN202058742U (en) | Solar photovoltaic component | |
| CN112259517A (en) | Photovoltaic module bypass element soldering lug, bypass protection element module and junction box | |
| JP2009246053A (en) | Diode having frame board | |
| JP5144201B2 (en) | Terminal box for solar cell module | |
| CN111769798A (en) | Improved modularized photovoltaic assembly bypass element and assembly junction box | |
| CN220234626U (en) | Integral bypass protection module and photovoltaic junction box with same | |
| CN212783439U (en) | High current-carrying modularized photovoltaic assembly bypass element and junction box | |
| CN211791434U (en) | Large-current photovoltaic junction box structure | |
| CN213212157U (en) | Photovoltaic module bypass element soldering lug, bypass protection element module and junction box | |
| CN111245162A (en) | Excitation module of generator for vehicle | |
| CN217719582U (en) | Axial diode, junction box and photovoltaic module | |
| JP4889377B2 (en) | Terminal box for solar cell module using a plurality of semi-coated diodes connected in parallel and solar cell system using the same | |
| JP2006351597A (en) | Terminal box for solar cell module | |
| CN215420194U (en) | Large-current junction box | |
| CN217933779U (en) | Axial diode, junction box and photovoltaic module | |
| CN217933778U (en) | Axial diode, junction box and photovoltaic module | |
| CN215344498U (en) | Improved high-current junction box | |
| CN221227494U (en) | Photovoltaic bypass device, photovoltaic module junction box and photovoltaic module | |
| CN212625953U (en) | Electric connecting sheet with heat radiation function | |
| CN111404481A (en) | Large-current photovoltaic junction box structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220530 Address after: 710018 No. 8369, Shangyuan Road, caotan Ecological Industrial Park, Xi'an Economic and Technological Development Zone, Xi'an City, Shaanxi Province Patentee after: LONGI LERRI SOLAR TECHNOLOGY CO.,LTD. Address before: 8369 Shangyuan Road, economic and Technological Development Zone, Xi'an City, Shaanxi Province Patentee before: Xi'an Longji Green Energy Construction Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |