CN202259376U - Photovoltaic junction box - Google Patents
Photovoltaic junction box Download PDFInfo
- Publication number
- CN202259376U CN202259376U CN2011204165861U CN201120416586U CN202259376U CN 202259376 U CN202259376 U CN 202259376U CN 2011204165861 U CN2011204165861 U CN 2011204165861U CN 201120416586 U CN201120416586 U CN 201120416586U CN 202259376 U CN202259376 U CN 202259376U
- Authority
- CN
- China
- Prior art keywords
- box body
- photovoltaic junction
- junction box
- protective circuit
- hole
- 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.)
- Expired - Fee Related
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 junction box which comprises a box body and a protective circuit, wherein the box body comprises a connecting through hole; the protective circuit comprises a connecting plate and a connecting terminal, circuit components are distributed on the connecting plate, and the connecting plate is electrically connected with the connecting terminal; the connecting plate is closely coated in the box body; the connecting terminal penetrates through the side wall of the connecting through hole and extends into the connecting through hole. No gap exists between the circuit components of the protective circuit and the box body and between connecting pieces and the box body, thereby benefiting the heat dissipation of the protective circuit and enhancing the service life and reliability of the protective circuit.
Description
Technical field
The utility model relates to the photovoltaic module field, particularly relates to a kind of photovoltaic junction box.
Background technology
Photovoltaic junction box is the device that is electrically connected of photovoltaic module, and major function is to connect and the protection solar photovoltaic assembly, and the electric current that simultaneously photovoltaic module is produced conducts to the user.There is protective circuit inside at photovoltaic junction box, can protect photovoltaic module under abnormal operating state, not to be damaged.The conventional photovoltaic terminal box adopts cartridge design; Comprise box body, lid and be fixed on the protective circuit in the box body; The protective circuit of photovoltaic junction box generally includes connecting plate that is distributed with circuit element and the splicing ear that is electrically connected with connecting plate, and circuit element is electronic components such as diode.Photovoltaic junction box is with after photovoltaic module is connected, the tray cover upper box cover, and lid and box body generally adopt seal with elastometic washer.
Because photovoltaic module useful life, protective circuit can produce high temperature at work generally in 25 years.Therefore, require photovoltaic junction box must possess water proof and dust proof, high temperature insulation, heat radiation excellent characteristic.But photovoltaic junction box adopts traditional cartridge design, comprises a large amount of air gaps in the terminal box, is unfavorable for the heat radiation of protective circuit, and the life-span of protective circuit and reliability are reduced greatly.
In addition, the protective circuit heating in the photovoltaic junction box makes the air expansion in the photovoltaic junction box, and this causes the air in the photovoltaic junction box to expand with heat and contract with cold repeatedly, and lid is produced long-term extruding repeatedly, causes seal with elastometic washer to lose efficacy gradually.The space that existed between photovoltaic junction box and the lid after sealing ring lost efficacy makes steam invade photovoltaic junction box inside, and this can corrode the protective circuit in the photovoltaic junction box.In practical experience, often be no more than 20 years the useful life of protective circuit in the photovoltaic junction box.In addition, the photovoltaic junction box of cartridge design has a plurality of parts, and production and mounting process are loaded down with trivial details, and reliability is low.
The utility model content
The utility model provides a kind of photovoltaic junction box, has improved the heat radiation of protective circuit in the photovoltaic junction box, and the life-span of protective circuit and reliability are improved.
The utility model provides a kind of photovoltaic junction box, comprises box body and protective circuit, wherein,
Said box body comprises connecting through hole, and the port of said connecting through hole is positioned at the upper and lower surface of box body;
Said protective circuit comprises connecting plate that is distributed with circuit element and the splicing ear that is electrically connected with connecting plate;
Said connecting plate closely is coated in the box body, and the sidewall that said splicing ear passes said connecting through hole extends in the connecting through hole.
Preferably, the material of said connecting plate is a metal material.
Preferably, said splicing ear is identical with the material of said connecting plate.
Alternatively, the material of said splicing ear and said connecting plate all is a copper.
Alternatively, said photovoltaic junction box comprises that also at least one is fixed on the leg on the box body, and the bottom of said leg is lower than the box body lower surface.
Preferably, the material of said leg is identical with the material of said box body.
Alternatively, said photovoltaic junction box also comprises lid, and the port shape of the shape of said lid and said connecting through hole is complementary.
Preferably, comprise at least one glue filling opening on the said lid.
Alternatively, said box body is a flat.
Compared with prior art, the utlity model has advantage:
The utility model closely is coated on the connecting plate that is distributed with circuit element in the protective circuit in the box body; The sidewall that has only the splicing ear of protective circuit to pass said connecting through hole extends in the connecting through hole; Make protective circuit circuit element and connector tight be wrapped in box body inside, tight all between circuit element and the box body, between connector and the box body.Adopt the injection moulding packaging technology that protective circuit is encapsulated in the box body, the material that the material of box body selects to have insulation, thermal diffusivity is good, ageing-resistant.This set mode of box body and protective circuit has been improved the heat dispersion of protective circuit, has improved the life-span and the reliability of protective circuit effectively.
In addition, the box body of the utility model can adopt the injection moulding packaged type to make, and does not have complicated connector, fixture, can save assembly technology, enhances productivity and quality stability.Box body in the photovoltaic connecting box of the utility model makes the protective circuit and the external world isolated fully, has the dustproof characteristic of excellent waterproof, and degree of protection can reach more than the IP67.
Description of drawings
Shown in accompanying drawing, above-mentioned and other purposes of the utility model are more clear.Identical Reference numeral is represented identical part in the accompanying drawing.Painstakingly do not draw accompanying drawing, focus on illustrating the purport of the utility model according to actual size equal proportion convergent-divergent.
Fig. 1 is the photovoltaic junction box schematic top plan view of the utility model;
Fig. 2 is the generalized section of the photovoltaic junction box of the utility model along AB line among Fig. 1;
Fig. 3 is the lid sketch map of the photovoltaic junction box of the utility model;
Fig. 4 is covered with the generalized section of lid for the photovoltaic junction box of the utility model.
Embodiment
The conventional photovoltaic terminal box adopts cartridge design, and protective circuit is fixed on box body inside, and photovoltaic junction box is with after photovoltaic module is connected, the tray cover upper box cover, and lid and box body generally adopt seal with elastometic washer.Because photovoltaic module useful life, protective circuit can produce high temperature at work generally in 25 years.Photovoltaic junction box adopts traditional cartridge design, has a large amount of air gaps in the terminal box, is unfavorable for the heat radiation of protective circuit, and the life-span of protective circuit and reliability are reduced greatly.
The utility model provides a kind of novel photovoltaic junction box; Connecting plate that is distributed with circuit element and the molecular protective circuit of link that is electrically connected with connecting plate are fixed in the box body; And make tight between circuit element and the connector and the box body of protective circuit; Help protective circuit heat radiation, avoided air in the box body to expand with heat and contract with cold simultaneously and destroy the sealing of photovoltaic junction box, can guarantee the reliability of protective circuit.
For above-mentioned purpose, the feature and advantage that make the utility model can be more obviously understandable, the embodiment of the utility model is done detailed explanation below in conjunction with accompanying drawing.For the ease of explanation, the sketch map of expression photovoltaic junction box can be disobeyed general ratio and done local the amplification, should in addition, in the making of reality, should not comprise the three dimensions size of length, width and the degree of depth with this as the qualification to the utility model.
Fig. 1 is the photovoltaic junction box schematic top plan view of the utility model, and Fig. 2 is the cross-sectional schematic of the photovoltaic junction box of the utility model along AB line among Fig. 1, describes the structure and the forming process of the utility model photovoltaic junction box below in conjunction with accompanying drawing.
The utility model photovoltaic junction box comprises box body 1 and protective circuit.Box body 1 comprises connecting through hole 2, and the port of connecting through hole 2 is positioned at the upper and lower surface of photovoltaic junction box 1.Said protective circuit comprises connecting plate 5 that is distributed with circuit element 4 and the splicing ear 3 that is electrically connected with connecting plate 5, the connecting plate 5 of protective circuit closely be coated on box body 1 in, the sidewall that splicing ear 3 passes connecting through hole 2 extends in the connecting through hole.The electrode outlet line of photovoltaic module is connected the back will fill connecting through hole in the connecting hole position with the splicing ear of terminal box with fluid sealant, make between circuit element and the box body, tight all between connector and the box body.Can adopt metal connecting piece in the utility model, for example copper links together circuit element and splicing ear through metal connecting piece like this, can also further improve the heat radiation of protective circuit simultaneously.In order to simplify technology, splicing ear can be for the part of metal connecting piece, shown in Fig. 2.
Photovoltaic junction box need be fixed on the photovoltaic module usually, and the lower surface of box body need be fixed with photovoltaic module, makes the lower port of through hole and photovoltaic module relative.In order to guarantee the heat radiation of photovoltaic junction box; Can on the box body of photovoltaic junction box, leg be set; The bottom of leg is lower than the lower surface of box body, for example at the edge of the lower surface of box body 4 cylindrical foot is set, cylindrical foot axially along the above-below direction setting of box body.Leg makes between box body and the photovoltaic module and forms certain gap, helps the box body heat radiation.Referring to Fig. 2, box body also can be set to the flat structure, in the bottom of box body leg 6 is set, and the low side of leg is lower than the lower surface of box body 6.The leg of the utility model can be set to along box body lower surface edge one loop-shaped, and the leg of a plurality of separations also can be set at the lower surface of box body, and the bottom face of a plurality of legs forms a plane that is lower than the box body lower surface.
Can realize the technical scheme of the utility model through the injection moulding packaging technology; With the metal connecting piece is example; Concrete manufacture craft process is: after splicing ear 3, circuit element 4 and metal connecting piece 5 are connected into protective circuit, wait for injection moulding among being positioned over the injection moulding encapsulating mould.Selection has that insulation, thermal diffusivity are good, the hot melt package material of ageing-resistant performance is as the material of box body; PPO (poly-p-phenylene oxide for example; Gather phenoxide), PA particles such as (polyamide, polyamide), with encapsulating material particle heating and melting; Adopt the low pressure injection technique that the cell material that melts is injected in the mould that is placed with protective circuit; Make the cell material complete filling be distributed with the connector surrounding space of circuit element, make between circuit element and the box body, tight all between connector and the box body, and splicing ear is exposed in connecting through hole; Then with being filled in circuit element and connector cell material cooling forming on every side in the mould, the box body that from mould, takes out cooling forming is the photovoltaic junction box of the utility model.
The leg of the photovoltaic junction box of present embodiment can with box body one injection molded, also can adopt the material that is different from box body, through modes such as stickups leg is fixed on the box body then.
The electrode outlet line of photovoltaic module in the connecting through hole of photovoltaic junction box with the wiring of splicing ear electricity, the power that photovoltaic module produces is exported to the user.Protective circuit for further sealed photovoltaic terminal box; Can adhere to encapsulants such as silica gel in the lower port of photovoltaic junction box connecting through hole in advance; Then photovoltaic module is electrically connected with photovoltaic junction box, in the connecting through hole of photovoltaic junction box, injects fluid sealant at last.
The photovoltaic junction box of the utility model can also comprise lid, in connecting through hole, builds lid behind the perfusion fluid sealant.Also can on lid, comprise glue filling opening, with photovoltaic module with build lid after photovoltaic junction box is connected, the glue filling opening perfusion fluid sealant through lid then.Referring to Fig. 3, the port shape of the shape of lid 7 and the connecting through hole of photovoltaic junction box 2 is complementary, and when covering lid, can all cover the port of connecting through hole, and referring to Fig. 4, lid 7 all covers the port of the connecting through hole 2 of box body 1.In order to reach the purpose of complete seal protection circuit, need the perfusion fluid sealant in the connecting hole of the photovoltaic junction box that combination is accomplished.Pour into fluid sealant for ease, at least one through hole 8 can be set as glue filling opening on lid 7, for example the lid among Fig. 37 comprises 3 glue filling openings, and the glue filling opening at center can be used as into the glue hole, and the glue filling opening on both sides can be used as the binder removal hole.Perfusion is during fluid sealant, and fluid sealant gets into from going into the glue hole, discharges from the binder removal hole, guarantees that connecting hole inside is fully by the fluid sealant embedding and tight.The material of lid can adopt and the box body identical materials.
The utility model is applied to the photovoltaic junction box field with the injection moulding packaging technology; Utilization injection moulding encapsulating structure replaces the boxlike encapsulating structure of conventional photovoltaic terminal box; The inner protective circuit one of photovoltaic junction box is packaged in the box body; At tight all between the circuit element and box body of protective circuit, between connector and the box body, be beneficial to the heat radiation of protective circuit, the life-span of protective circuit and reliability are improved.
The above only is the preferred embodiment of the utility model, is not the utility model is done any pro forma restriction.
Though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model.Any those of ordinary skill in the art; Do not breaking away under the utility model technical scheme scope situation; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to the utility model technical scheme, or are revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from the utility model technical scheme, all still belongs in the scope of the utility model technical scheme protection any simple modification, equivalent variations and modification that above embodiment did according to the technical spirit of the utility model.
Claims (9)
1. a photovoltaic junction box comprises box body and protective circuit, it is characterized in that,
Said box body comprises connecting through hole, and the port of said connecting through hole is positioned at the upper and lower surface of box body;
Said protective circuit comprises connecting plate that is distributed with circuit element and the splicing ear that is electrically connected with connecting plate;
Said connecting plate closely is coated in the box body, and the sidewall that said splicing ear passes said connecting through hole extends in the connecting through hole.
2. photovoltaic junction box according to claim 1 is characterized in that, the material of said connecting plate is that box belongs to material.
3. photovoltaic junction box according to claim 2 is characterized in that, said splicing ear is identical with the material of said connecting plate.
4. photovoltaic junction box according to claim 3 is characterized in that, the material of said splicing ear and said connecting plate all is a copper.
5. according to each described photovoltaic junction box of claim 1 to 4, it is characterized in that said photovoltaic junction box comprises that also at least one is fixed on the leg on the box body, the bottom of said leg is lower than the box body lower surface.
6. photovoltaic junction box according to claim 5 is characterized in that, the material of said leg is identical with the material of said box body.
7. according to each described photovoltaic junction box of claim 1 to 4, it is characterized in that said photovoltaic junction box also comprises lid, the port shape of the shape of said lid and said connecting through hole is complementary.
8. photovoltaic junction box according to claim 7 is characterized in that, comprises at least one glue filling opening on the said lid.
9. according to each described photovoltaic junction box of claim 1 to 4, it is characterized in that said box body is a flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204165861U CN202259376U (en) | 2011-10-27 | 2011-10-27 | Photovoltaic junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204165861U CN202259376U (en) | 2011-10-27 | 2011-10-27 | Photovoltaic junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202259376U true CN202259376U (en) | 2012-05-30 |
Family
ID=46120574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204165861U Expired - Fee Related CN202259376U (en) | 2011-10-27 | 2011-10-27 | Photovoltaic junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202259376U (en) |
-
2011
- 2011-10-27 CN CN2011204165861U patent/CN202259376U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018157557A1 (en) | Battery module | |
| CN202434505U (en) | Photoelectricity chip assembly | |
| CN101789572B (en) | Junction box for solar cell module | |
| CN104579158B (en) | The processing method of solar electrical energy generation assembly terminal box | |
| CN102738351A (en) | Light emitting diode (LED) packaging structure and manufacturing method thereof | |
| JP6876142B2 (en) | Chip for photovoltaic components Low voltage package type junction box and its manufacturing method | |
| CN203631419U (en) | Novel heat protector packaging structure | |
| CN110459822A (en) | Novel protected plate insulation-encapsulated technique and lithium battery | |
| JP5146406B2 (en) | Terminal box for solar cell module | |
| CN103824821B (en) | Switch power module of a kind of plastics enclosed package and preparation method thereof | |
| CN204013385U (en) | A kind of photovoltaic junction box bypass diode circuit module of device | |
| CN204011394U (en) | Twin islet SOP encapsulating structure | |
| CN202259376U (en) | Photovoltaic junction box | |
| CN103022188A (en) | Photovoltaic junction box | |
| CN202103607U (en) | Solar energy photovoltaic assembly conjunction box | |
| CN105991090A (en) | All-glue-pouring photovoltaic connecting box with three-side ventilation bottom and inverted and suspended internal diode | |
| CN203192820U (en) | High-efficient radiation solar PV junction box | |
| CN202616266U (en) | Novel solar photovoltaic connecting box | |
| CN204361988U (en) | Solar power generation assembly terminal box | |
| CN202259234U (en) | Photovoltaic by-pass diode module possessing radiator | |
| CN201556644U (en) | Rectangular light spot power type LED encapsulating structure | |
| CN200950438Y (en) | Wiring box for solar cell assembly | |
| CN202948921U (en) | Non-insulated type power module | |
| CN202475996U (en) | Waterproof structure of power supply adapter | |
| CN203165916U (en) | Solar energy junction box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CNBM JETION SOLAR (CHINA) TECHNOLOGY CO., LTD. Free format text: FORMER NAME: JETION TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Shen Gang Town Cheng Road Jiangyin city Jiangsu Province, Wuxi City, No. 1011, 214443 Patentee after: China National Building Materials Group Corporation Jetion Solar (China) Co., Ltd. Address before: Shen Gang Town Cheng Road Jiangyin city Jiangsu Province, Wuxi City, No. 1011, 214443 Patentee before: Jetion Solar(China) Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20161027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |