CN203398138U - Solar photovoltaic module junction box with good heat dissipation - Google Patents
Solar photovoltaic module junction box with good heat dissipation Download PDFInfo
- Publication number
- CN203398138U CN203398138U CN201320479316.4U CN201320479316U CN203398138U CN 203398138 U CN203398138 U CN 203398138U CN 201320479316 U CN201320479316 U CN 201320479316U CN 203398138 U CN203398138 U CN 203398138U
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- Prior art keywords
- solar photovoltaic
- box body
- terminal box
- photovoltaic assembly
- heat radiation
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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 discloses a solar photovoltaic module junction box with good heat dissipation. The solar photovoltaic module junction box with the good heat dissipation comprises a main box body, three diodes, four conductive bodies, and two heat dissipation plates, wherein the main box body is formed by a box cover and a box body; the diodes are respectively welded between adjacent conductive bodies; and two conductive bodies in the middle are respectively in rigid connection with one heat dissipation plate. The solar photovoltaic module junction box with the good heat dissipation can greatly reduce the working temperature of the diode and can maintain the excellent heat dissipation, so as to the work reliability of the junction box is ensured.
Description
Technical field
The utility model relates to a kind of solar photovoltaic assembly terminal box of dispelling the heat good, belongs to solar photovoltaic assembly technical field.
Background technology
At present, solar photovoltaic assembly terminal box, all adopt a block assembly that a terminal box connected mode is installed, the cell piece of each assembly is divided into again three groups, each group is connected with the bypass diode of terminal box, when hot spot effect appears in assembly, the bypass diode conducting that this cell piece is corresponding, can continue to power station power supply by diode the total current of battery strings.But the electric current during due to diode operation is larger, so produce larger heat, when particularly three of assembly junction box diodes all have by-pass current to pass through, the junction temperature of diode all sharply rises thereupon, when if the ambient temperature of assembly is at that time higher, the crystallization temperature of three diodes in terminal box can reach 130 ℃ or more than, and the diode junction temperature in the middle of being positioned at relatively taller 5～15 ℃ or more than, and heat concentrates on a very little scope, therefore, the junction temperature of so high diode, become current terminal box due to the bad main cause that causes diode fails of heat radiation.
Traditional terminal box is in order to address this problem, and to welding the metalwork (electric conductor has four) of diode, appropriateness increases the wall thickness of size and material, to strengthen radiating effect conventionally.Because terminal box has two output cables, so the electric conductor of two sides is because being connected with cable, can make part heat dispel the heat by cable, and middle diode and outside without direct and quick heat radiating approach, heat is relatively higher and more concentrated, cause the large and heat radiation difficulty of its heat, reduced the reliability of diode.
Photovoltaic module need to reach the useful life of 25 years, terminal box must reach this requirement equally obviously, by the failure analysis of butted line box, the inefficacy of diode under adverse circumstances, too high with the junction temperature of diode is the main cause directly losing efficacy, and the high temperature rise that also meets semiconductor device is the key factor of reliability decrease.
Summary of the invention
Technical problem to be solved in the utility model is the defect that overcomes prior art, a kind of solar photovoltaic assembly terminal box of dispelling the heat good is provided, temperature rise when it can reduce diode operation well, keeps good heat dispersion, thereby guarantees the reliability of terminal box work.
The utility model solves the problems of the technologies described above the technical scheme of taking: a kind of solar photovoltaic assembly terminal box of dispelling the heat good, comprise the box body being formed by lid and box body, three diodes and four electric conductors, diode is welded on respectively between adjacent electric conductor, also comprise two heating panels, two electric conductors in the middle of being positioned at are rigidly connected with a heating panel respectively.
Further, in described box body, there is casting glue sealing, be full of terminal box, be convenient to heat radiation.
Further, all have binding post on described electric conductor, each electric conductor is electrically connected by the convergent belt of binding post and solar photovoltaic assembly.
Further, also comprise cable, the two ends of described box body arrange respectively fixture block, one end of cable respectively with box body in the electric conductor of both sides side be electrically connected, then after fixture block welding, draw box body respectively.
Further, have heat conduction colloid in described box body, described diode and binding post are all encapsulated in heat conduction colloid.
Further, described box body and lid are made by Heat Conduction Material.
Further, described electric conductor is made by red copper material.
Further, on described heating panel, be provided with L-type or U-shaped groove structure.
Adopted after technique scheme, inner in terminal box, for welding four electric conductors of diode, to two electric conductors in the middle of being positioned at, a heating panel is installed respectively, by rigidity, contact with electric conductor and be connected, and the shape of heating panel is organically combined with the box body of terminal box, make the heat of three diodes be delivered to soon on heating panel, be dispersed into rapidly again whole box body simultaneously, then these heats by the thermal conduction characteristic of the medium in box and box body omnibearing being delivered to outside box, accelerated radiating rate, reduced the temperature of thermal source, fundamentally solved too high and the higher and significant deficiency that causes losing efficacy of intermediate diode temperature rise particularly of the diode temperature rise of conventional electrical connectors, keep good heat dispersion, thereby guarantee the reliability of terminal box work, in addition, this terminal box cost is low, handling ease, can accomplish scale production.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the good solar photovoltaic assembly terminal box of heat radiation of the present utility model.
Embodiment
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below.
As shown in Figure 1, a kind of solar photovoltaic assembly terminal box of dispelling the heat good, comprise the box body being formed by lid and box body 1, three diodes 2 and four electric conductors 3, diode 2 is welded on respectively between adjacent electric conductor 3, also comprise two heating panels 4, two electric conductors 3 in the middle of being positioned at are rigidly connected with a heating panel 4 respectively.
In box body 1, there is casting glue sealing, be full of terminal box, be convenient to heat radiation.
On electric conductor 3, all have binding post 3-1, each electric conductor 3 is electrically connected by the convergent belt of binding post 3-1 and solar photovoltaic assembly.Between binding post and convergent belt, can adopt welding manner.
This terminal box also comprises cable, the two ends of box body 1 arrange and are respectively arranged with fixture block 5, one end of cable is electrically connected with the electric conductor 3 of both sides respectively, and the other end of cable is drawn box body 1 respectively after fixture block 5 weldings, guarantees the steadiness and the sealing that between them, connect.
In box body 1, have heat conduction colloid, diode 2 and binding post 3-1 are all encapsulated in heat conduction colloid.The sealing of terminal box is guaranteed in the effect of heat conduction colloid sealing on the one hand, and on the other hand when diode 2 is worked febrile state, the heat of diode 2 can be in time passed to box body 1 and is dispersed into box body outside by electric conductor 3 and heating panel 4 and heat conduction colloid.
Box body 1 and lid are made by Heat Conduction Material.
On heating panel 4, be provided with L-type or U-shaped groove structure 4-1.
This solar photovoltaic assembly terminal box, its heating panel 4 also can be for Split type connecting box (terminal box divides three of left, center, right little terminal box), the terminal box in the middle of putting on.
The output of the electric conductor 3 on above-mentioned electric conductor 3 Zhong Er limits can utilize riveted joint to be connected with cable, and the fixing employing ultrasonic bonding of drawing of cable will be fixing between fixture block 5 and box body 1.
Operation principle of the present utility model is as follows:
Inner in terminal box, for welding four electric conductors 3 of diode 2, to two electric conductors 3 in the middle of being positioned at, a heating panel 4 is installed respectively, by rigidity, contact with electric conductor 3 and be connected, and the shape of heating panel 4 is organically combined with the box body of terminal box 1, the heat of three diodes 2 is delivered on heating panel 4 soon, be dispersed into rapidly again whole box body 1 simultaneously, then these heats by the thermal conduction characteristic of the medium in box and box body 1 omnibearing being delivered to outside box, accelerated radiating rate, reduced the temperature of thermal source, fundamentally solve that the diode temperature rise of upper conventional electrical connectors is too high and particularly intermediate diode temperature rise is higher and cause the significant deficiency of inefficacy, keep good heat dispersion, thereby guarantee the reliability of terminal box work, in addition, this terminal box cost is low, handling ease, can accomplish scale production.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the utility model is solved further describe; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. the good solar photovoltaic assembly terminal box of heat radiation, comprise the box body, three diodes (2) and four electric conductors (3) that by lid and box body (1), are formed, diode (2) is welded on respectively between adjacent electric conductor (3), it is characterized in that: also comprise two heating panels (4), two electric conductors (3) in the middle of being positioned at are rigidly connected with a heating panel (4) respectively.
2. the good solar photovoltaic assembly terminal box of heat radiation according to claim 1, is characterized in that: in box body (1), have casting glue sealing.
3. the good solar photovoltaic assembly terminal box of heat radiation according to claim 1, it is characterized in that: on described electric conductor (3), all have binding post (3-1), each electric conductor (3) is electrically connected by binding post (3-1) and the convergent belt of solar photovoltaic assembly.
4. the good solar photovoltaic assembly terminal box of heat radiation according to claim 1, it is characterized in that: also comprise cable, the two ends of described box body (1) arrange and are respectively arranged with fixture block (5), one end of cable is electrically connected with the electric conductor (3) of corresponding both sides respectively, and the other end of cable is drawn box body (1) respectively after fixture block (5) welding.
5. the good solar photovoltaic assembly terminal box of heat radiation according to claim 3, is characterized in that: described box body has heat conduction colloid in (1), and described diode (2) and binding post (3-1) are all encapsulated in heat conduction colloid.
6. the good solar photovoltaic assembly terminal box of heat radiation according to claim 1, is characterized in that: described box body (1) and lid are made by Heat Conduction Material.
7. the good solar photovoltaic assembly terminal box of heat radiation according to claim 1, is characterized in that: described electric conductor (3) is made by red copper material.
8. the good solar photovoltaic assembly terminal box of heat radiation according to claim 1, is characterized in that: on described heating panel (4), be provided with L-type or U-shaped groove structure (4-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479316.4U CN203398138U (en) | 2013-08-07 | 2013-08-07 | Solar photovoltaic module junction box with good heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479316.4U CN203398138U (en) | 2013-08-07 | 2013-08-07 | Solar photovoltaic module junction box with good heat dissipation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203398138U true CN203398138U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320479316.4U Expired - Fee Related CN203398138U (en) | 2013-08-07 | 2013-08-07 | Solar photovoltaic module junction box with good heat dissipation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203398138U (en) |
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2013
- 2013-08-07 CN CN201320479316.4U patent/CN203398138U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20160807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |