CN213602609U - Photovoltaic junction box and photovoltaic module - Google Patents
Photovoltaic junction box and photovoltaic module Download PDFInfo
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- CN213602609U CN213602609U CN202022329630.7U CN202022329630U CN213602609U CN 213602609 U CN213602609 U CN 213602609U CN 202022329630 U CN202022329630 U CN 202022329630U CN 213602609 U CN213602609 U CN 213602609U
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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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Abstract
The utility model provides a pair of photovoltaic terminal box and photovoltaic module, include: the box body, the electric conductor and the bypass diode are arranged in the box body; the interior of the box body comprises a first cavity and a second cavity, and the electric conductor penetrates through the first cavity and the second cavity; the bypass diode is arranged in the first cavity and is connected with the electric conductor; the electric conductor is used for being connected with the photovoltaic cable penetrating through the first cavity; the surface of the first cavity is provided with at least one heat dissipation opening. The heat dissipation opening improves the air fluidity in the first cavity, so that air can enter the first cavity through the heat dissipation opening and carry heat in the first cavity away, the heat dissipation efficiency of the photovoltaic junction box is improved, and the heat treatment capacity of the photovoltaic junction box on the bypass diode is enhanced.
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.
In the prior art, 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 shielded, the shielded cells do not generate electricity but become loads, so that 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 of the bypass diode are welded together with a conductor in the photovoltaic junction box, and the electricity generated by the cells is led out through a bus bar connected with the conductor.
However, since current flows through the bypass diode, the bypass diode generates heat, and the heat often causes the temperature in the junction box to be too high, so that the photovoltaic module is damaged.
SUMMERY OF THE UTILITY MODEL
The utility model provides a photovoltaic terminal box and photovoltaic module aims at promoting the radiating efficiency of photovoltaic terminal box.
In a first aspect, an embodiment of the present invention provides a photovoltaic junction box, the photovoltaic junction box includes:
the bypass diode is arranged in the box body;
the box body comprises a first cavity and a second cavity inside, and the electric conductor penetrates through the first cavity and the second cavity;
the bypass diode is arranged in the first cavity and is connected with the electric conductor; the electric conductor is used for being connected with a photovoltaic cable penetrating through the first cavity;
the surface of the first cavity is provided with at least one heat dissipation opening.
Optionally, the height of the side of the second cavity facing the bottom plate is higher than the height of the side of the first cavity facing the bottom plate.
Optionally, a side of the second cavity facing the bottom plate is provided with a skirt structure, and the skirt structure is used for contacting with the bottom plate.
Optionally, a difference between a height of a side of the first cavity facing the bottom plate and a height of a side of the second cavity facing the bottom plate is 5-20 mm.
Optionally, the heat dissipation opening includes a first opening, a second opening, and a third opening;
two opposite side surfaces of the first cavity are respectively provided with a first opening and a second opening, and the first cavity is used for penetrating one surface of the photovoltaic cable and is provided with a third opening.
Optionally, the length of the heat dissipation opening is 40-50mm, the width of the heat dissipation opening is 3-8mm, and four corners of the heat dissipation opening are of arc structures.
Optionally, a heat conducting potting adhesive layer is filled in the first cavity, the heat conducting potting adhesive layer covers the whole bypass diode, and the height of the heat conducting potting adhesive layer is lower than the position of the heat dissipation opening;
and a common potting adhesive layer is filled in the second cavity.
Optionally, a pad opening is formed in a portion, located in the second cavity, of the conductive body, and a pad tin storage is arranged in the pad opening.
Optionally, a plurality of conductor installation positioning columns are arranged in the first cavity, a plurality of installation holes are formed in the surface of the conductor, and the conductor installation positioning columns are arranged in the corresponding installation holes.
In a second aspect, an embodiment of the present invention provides a photovoltaic module, the photovoltaic module includes the photovoltaic junction box.
The embodiment of the utility model provides a pair of photovoltaic terminal box and photovoltaic module, include: the box body, the electric conductor and the bypass diode are arranged in the box body; the interior of the box body comprises a first cavity and a second cavity, and the electric conductor penetrates through the first cavity and the second cavity; the bypass diode is arranged in the first cavity and is connected with the electric conductor; the electric conductor is used for being connected with the photovoltaic cable penetrating through the first cavity; the surface of the first cavity is provided with at least one heat dissipation opening. The heat dissipation opening improves the air fluidity in the first cavity, so that air can enter the first cavity through the heat dissipation opening and carry heat in the first cavity away, the heat dissipation efficiency of the photovoltaic junction box is improved, and the heat treatment capacity of the photovoltaic junction box on the bypass diode is enhanced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 shows an internal structural schematic diagram of a photovoltaic junction box in an embodiment of the present invention;
fig. 2 shows an external view of a photovoltaic junction box in an embodiment of the present invention;
fig. 3 shows an external view of another photovoltaic junction box in an embodiment of the present invention;
fig. 4 shows an internal structure schematic diagram of another photovoltaic junction box in the 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.
Referring to fig. 1, fig. 1 shows an internal structure schematic diagram of a photovoltaic junction box in an embodiment of the present invention, for setting up on photovoltaic module's bottom plate, the photovoltaic junction box includes: a case 10, and a conductor 20 and a bypass diode 30 provided inside the case 10; the box body 10 comprises a first cavity 11 and a second cavity 12 inside, and the electric conductor 20 passes through the first cavity 11 and the second cavity 12; the bypass diode 30 is arranged in the first cavity 11, and the bypass diode 30 is connected with the electric conductor 20; the electrical conductor 20 is used for connecting with the photovoltaic cable 40 passing through the first cavity 11; specifically, referring to fig. 2, fig. 2 shows an appearance schematic diagram of a photovoltaic junction box in an embodiment of the present invention, and the surface of the first cavity 11 is provided with at least one heat dissipation opening 13.
In the embodiment of the present invention, referring to fig. 1, the box body 10 of the photovoltaic junction box can be divided into two mutually independent cavities: the photovoltaic module comprises a first cavity 11 and a second cavity 12, an electric conductor 20 penetrates through the first cavity 11 and the second cavity 12, the electric conductor 20 is connected with a photovoltaic cable 40 of the photovoltaic module, the first cavity 11 can be used as a bypass function area and used for placing a bypass diode 20 which is high in heat emission in a working state, and the bypass diode 20 is connected with the electric conductor 20; the second cavity 12 may serve as a conventional functional area for placement of the electrical conductors 20 and for pad bonding.
Specifically, bypass diode 20 can produce a large amount of heats at the during operation, and a large amount of heats can be stayed in first cavity 11, because second cavity 12 and first cavity 11 mutual isolation to the device of having avoided in the second cavity 12 receives the thermal influence that bypass diode 20 sent, and, in order to improve first cavity 11's heat-sinking capability, the embodiment of the utility model provides a can also set up at least one heat dissipation trompil 13 on first cavity 11's surface, make the air can follow heat dissipation trompil 13 and get into first cavity 11, and carry the heat among the first cavity 11 and leave, thereby improved the air mobility in first cavity 11, improved first cavity 11's heat-sinking capability.
It should be noted that, the quantity of heat dissipation trompil is more, and the heat-sinking capability of first cavity is stronger, the embodiment of the utility model provides a can be according to actual demand, on the basis that does not influence the normal work of photovoltaic terminal box, the quantity of the heat dissipation trompil of adjustment setting on first cavity to make the heat-sinking capability of first cavity reach the optimum.
In summary, in the embodiment of the present invention, include: the box body, the electric conductor and the bypass diode are arranged in the box body; the interior of the box body comprises a first cavity and a second cavity, and the electric conductor penetrates through the first cavity and the second cavity; the bypass diode is arranged in the first cavity and is connected with the electric conductor; the electric conductor is used for being connected with the photovoltaic cable penetrating through the first cavity; the surface of the first cavity is provided with at least one heat dissipation opening. The heat dissipation opening improves the air fluidity in the first cavity, so that air can enter the first cavity through the heat dissipation opening and carry heat in the first cavity away, the heat dissipation efficiency of the photovoltaic junction box is improved, and the heat treatment capacity of the photovoltaic junction box on the bypass diode is enhanced.
Optionally, referring to fig. 3, fig. 3 shows an appearance schematic diagram of another photovoltaic junction box in an embodiment of the present invention, and a height of a side a of the second cavity 12 facing the bottom plate is higher than a height of a side B of the first cavity 11 facing the bottom plate.
The photovoltaic terminal box can set up on photovoltaic module's bottom plate to with the bottom plate contact, in the embodiment of the utility model, can with second cavity 12 towards the height of the one side A of bottom plate sets up to the height that is higher than the one side B of first cavity 11 towards the bottom plate, this kind of height drop can make when the photovoltaic terminal box sets up on photovoltaic module's bottom plate, first cavity 11 towards the one side B of bottom plate can unsettled set up on the bottom plate, not with bottom plate direct contact, first cavity 11 leaves the clearance between one side B of bottom plate and the bottom plate to first cavity 11 towards the one side B of bottom plate can be directly with air contact, has improved first cavity 11's radiating efficiency, the heat that first cavity 11 produced also can not lead to the fact the influence to the bottom plate.
Optionally, referring to fig. 3, a side a of the second cavity 12 facing the base plate is provided with a skirt structure 121, and the skirt structure 121 is configured to contact the base plate.
The embodiment of the utility model provides an in, second cavity 12 is provided with the shirt rim structure 121 to turning up towards one side A of bottom plate, and the surface and the bottom plate of shirt rim structure 121 are parallel, can be used for increasing the area of contact of photovoltaic terminal box and bottom plate, improve the assembly stability of photovoltaic terminal box and bottom plate.
Optionally, referring to fig. 3, the difference between the height of the side B of the first cavity 11 facing the bottom plate and the height of the side a of the second cavity 12 facing the bottom plate is 5-20 mm.
The heat dissipation open pore comprises a first open pore, a second open pore and a third open pore;
optionally, referring to fig. 2, two opposite sides of the first cavity 11 are respectively provided with a first opening 131 and a second opening (drawn in the figure), and one side of the first cavity 11 for passing through the photovoltaic cable 40 is provided with a third opening 132.
In the embodiment of the present invention, two opposite sides of the first cavity 11 are respectively provided with the first opening 131 and the second opening, the first opening 131 and the second opening can make the first cavity 11 have two through openings which are oppositely arranged, so that the air can directly enter from the first opening 131, leave from the second opening, or enter from the second opening, leave from the first opening 131, improve the air fluidity in the first cavity 11, and further improve the heat dissipation performance of the first cavity 11.
Further, a third opening 132 is disposed on a surface of the first cavity 11, through which the photovoltaic cable 40 passes, and the third opening 132 may further improve the heat dissipation performance of the first cavity 11. It should be noted that the photovoltaic cable 40 includes a cathode cable 41 and an anode cable 42, and the cathode cable 41 and the anode cable 42 are used for conducting with the respective bypass diode 30 electrical conductors 20.
Optionally, the length of the heat dissipation opening is 40-50mm, the width of the heat dissipation opening is 3-8mm, and four corners of the heat dissipation opening are of arc structures. The appearance attractiveness degree of the photovoltaic junction box can be improved by the aid of the radiating holes with the four corners in the arc structures.
Optionally, referring to fig. 4, fig. 4 shows an internal structural schematic diagram of another photovoltaic junction box in an embodiment of the present invention, a heat conducting potting adhesive layer 50 is filled in the first cavity 11, the heat conducting potting adhesive layer 50 covers the whole bypass diode, and the height of the heat conducting potting adhesive layer 50 is lower than the position of the heat dissipation opening 13; the second cavity 12 is filled with a common potting adhesive layer 60. The conventional potting adhesive layer 60 also covers the entire electrical conductor located within the second cavity 12.
The embodiment of the utility model provides an in, the inside pouring sealant that needs to fill of photovoltaic terminal box, it is concrete, can fill in the first cavity 11 and have heat conduction encapsulating glue layer 50, heat conduction encapsulating glue layer 50 has higher heat conductivility, can improve the heat dispersion of first cavity 11 to heat conduction encapsulating glue layer 50 can not exceed the bottom of heat dissipation trompil 13, spills over from heat dissipation trompil 13 in order to avoid heat conduction encapsulating glue layer 50.
Optionally, referring to fig. 1, a pad opening 21 is disposed in a portion of the conductive body 20 located in the second cavity 12, and a pad tin storage is disposed in the pad opening 21. The pad trompil 21 supplies the subassembly lead-out wire to wear out usefulness, and pad trompil 21 department is equipped with the pad and stores up tin, can make things convenient for the welding of subassembly lead-out wire.
Optionally, referring to fig. 1, a plurality of conductor installation positioning pillars 111 are disposed in the first cavity 11, a plurality of installation holes are disposed on the surface of the conductor 30, and the conductor installation positioning pillars 111 are disposed in the corresponding installation holes.
The embodiment of the utility model provides an in, electric conductor 20 can be installed on electric conductor installation reference column 111 through the mounting hole, and according to the circuit diagram, two diode pins of bypass diode 30 correspond respectively and have connected two electric conductors 20. The exposed copper wire portions of the photovoltaic cable 40 are connected to the leftmost and rightmost conductors 20 within the photovoltaic junction box by either solder or resistance welding.
Specifically, the utility model discloses in, the production flow of photovoltaic terminal box is as follows:
1. and (3) assembling the bypass diode and the conductor which is provided with the tin storage in advance according to a circuit diagram, wherein the assembling mode can be tin-adding welding or resistance welding.
2. The diode and the conductor are integrally arranged in the box body, the conductor installation positioning column in the box body needs to penetrate through the installation hole in the conductor, and the part of the conductor installation positioning column, which exceeds the surface of the conductor, is fixed by adopting a hot riveting process.
3. And (3) mounting a photovoltaic connector at one end of the photovoltaic cable, stripping a copper core of 5-8mm from the other end of the photovoltaic cable, inserting the end of the copper core into the box body, and assembling the copper core and the electric conductor.
4. The photovoltaic cable is fixed and sealed by the wire pressing block and the ultrasonic welding technology.
5. And fixing the box body which is finished by the steps by using a jig, enabling the skirt edge structure to be under, enabling the box cover arranged on the second cavity to be on top, pouring high-heat-conduction pouring sealant into the first cavity from the heat dissipation opening, wherein the high-heat-conduction pouring sealant layer needs to completely cover the bypass diode but cannot exceed the lowest end of the heat dissipation opening.
6. After the pouring sealant is completely cured, the photovoltaic junction box can be used by a component factory, when the photovoltaic junction box is used, a circle of adhesive silica gel can be coated on the skirt edge structure, the component leading-out wire penetrates through the pad opening in the second cavity, then the skirt edge is firmly adhered to the bottom plate of the photovoltaic component, the component leading-out wire is welded to the pad opening, finally, a common pouring sealant layer is filled in the second cavity, and after the pouring sealant is cured, the photovoltaic junction box is installed.
In summary, in the embodiment of the present invention, include: the box body, the electric conductor and the bypass diode are arranged in the box body; the interior of the box body comprises a first cavity and a second cavity, and the electric conductor penetrates through the first cavity and the second cavity; the bypass diode is arranged in the first cavity and is connected with the electric conductor; the electric conductor is used for being connected with the photovoltaic cable penetrating through the first cavity; the surface of the first cavity is provided with at least one heat dissipation opening. The heat dissipation opening improves the air fluidity in the first cavity, so that air can enter the first cavity through the heat dissipation opening and carry heat in the first cavity away, the heat dissipation efficiency of the photovoltaic junction box is improved, and the heat treatment capacity of the photovoltaic junction box on the bypass diode is enhanced.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention essentially or the portions contributing to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), and includes a plurality of instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. A photovoltaic junction box for being disposed on a base plate of a photovoltaic module, the photovoltaic junction box comprising:
the bypass diode is arranged in the box body;
the box body comprises a first cavity and a second cavity inside, and the electric conductor penetrates through the first cavity and the second cavity;
the bypass diode is arranged in the first cavity and is connected with the electric conductor; the electric conductor is used for being connected with a photovoltaic cable penetrating through the first cavity;
the surface of the first cavity is provided with at least one heat dissipation opening.
2. The photovoltaic junction box of claim 1, wherein a height of a side of the second cavity facing the base plate is higher than a height of a side of the first cavity facing the base plate.
3. The photovoltaic junction box of claim 2, wherein a side of the second cavity facing the base plate is provided with a skirt structure for contacting the base plate.
4. The photovoltaic junction box of claim 2, wherein a difference between a height of a side of the first cavity facing the base plate and a height of a side of the second cavity facing the base plate is 5-20 mm.
5. The photovoltaic junction box of claim 1, wherein the heat dissipation aperture comprises a first aperture, a second aperture, and a third aperture;
two opposite side surfaces of the first cavity are respectively provided with a first opening and a second opening, and the first cavity is used for penetrating one surface of the photovoltaic cable and is provided with a third opening.
6. The photovoltaic junction box of claim 1, wherein the heat dissipation opening has a length of 40-50mm and a width of 3-8mm, and four corners of the heat dissipation opening are in a circular arc structure.
7. The photovoltaic junction box of claim 1, wherein the first cavity is filled with a heat conducting potting adhesive layer, the heat conducting potting adhesive layer covers the entire bypass diode, and the height of the heat conducting potting adhesive layer is lower than the position of the heat dissipation opening;
and a common potting adhesive layer is filled in the second cavity.
8. The photovoltaic junction box of claim 1, wherein a portion of the electrical conductor in the second cavity is provided with a pad opening, and a pad tin storage is provided in the pad opening.
9. The photovoltaic junction box of claim 1, wherein a plurality of conductor mounting posts are disposed within the first cavity, wherein a plurality of mounting holes are disposed on the surface of the conductor, and wherein the conductor mounting posts are disposed in the corresponding mounting holes.
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 |
|---|---|---|---|
| CN202022329630.7U CN213602609U (en) | 2020-10-19 | 2020-10-19 | Photovoltaic junction box and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022329630.7U CN213602609U (en) | 2020-10-19 | 2020-10-19 | Photovoltaic junction box and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213602609U true CN213602609U (en) | 2021-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022329630.7U Active CN213602609U (en) | 2020-10-19 | 2020-10-19 | Photovoltaic junction box and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213602609U (en) |
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2020
- 2020-10-19 CN CN202022329630.7U patent/CN213602609U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220606 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: No.8369 Shangyuan Road, Xi'an Economic and Technological Development Zone, Xi'an City, Shaanxi Province, 710021 Patentee before: Xi'an Longji Green Energy Construction Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |