CN204361988U - Solar power generation assembly terminal box - Google Patents
Solar power generation assembly terminal box Download PDFInfo
- Publication number
- CN204361988U CN204361988U CN201520081531.8U CN201520081531U CN204361988U CN 204361988 U CN204361988 U CN 204361988U CN 201520081531 U CN201520081531 U CN 201520081531U CN 204361988 U CN204361988 U CN 204361988U
- Authority
- CN
- China
- Prior art keywords
- power generation
- solar power
- generation assembly
- terminal box
- substrate
- 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
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Classifications
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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
Abstract
Solar power generation assembly terminal box.Provide a kind of under guaranteeing to realize the prerequisite to the scene protection of solar panel hot spot, cost is cheaper, the solar power generation assembly terminal box that effective utilization is higher.Comprise box body, establish the first ~ tetra-substrate in described box body, the first ~ tetra-substrate is equipped with the convergent belt joint for connecting cell piece in solar power generation assembly, wherein first and the 4th substrate be also provided with described solar power generation assembly export positive and negative connecting-wire connector; Described the first ~ tri-substrate is respectively equipped with the first ~ tri-groove; The the first ~ tri-diode chip for backlight unit is respectively equipped with in described the first ~ tri-groove.The utility model changes the tactic pattern of traditional solar power generation assembly terminal box, be directly installed on substrate by chip, then integral molded plastic is shaping, decreases production process, greatly saved production cost.
Description
Technical field
The utility model relates to solar power generation assembly terminal box, particularly relates to a kind of integral molded plastic once-forming that is directly welded by semiconductor chip, the terminal box of band bypass protection function.
Background technology
Solar power generation assembly is the generator unit parts of solar power system (station), solar power system is by some pieces of electrification components, connected by series and parallel and realize Electricity Generation, and by electric power storage or inversion, provide electric power or grid-connected power supply to electric consumer.
Solar power generation assembly in solar power plant system generates electricity under the normal illumination of sunlight, outwards exports electric energy.But when the sunlight irradiating some positions in electrification component by object or shadow of object block, namely the silicon cell at this position is transformed into resistance states by generating state, other electrification component normal power generation under solar radiation of series connection with it, electric current is by the cell piece of resistance states, produce larger consumption heating, cell piece and assembly backboard are burnt, and this phenomenon is called the hot spot phenomenon of assembly.
For preventing the generation of hot spot phenomenon; adopt in the often string silicon cell group in solar power generation assembly; reverse parallel connection bypass diode; when hot spots condition occurs; diode forward conducting; electric current is outwards exported by bypass diode, protects silicon cell and is not burnt the trouble free service with electrification component.Current solar power generation assembly generally adopts 72 cell pieces to be connected in series, and a few components 60 cell pieces are connected in series.In electrification component, series cells is divided into three groups, often a group bypass diode.Other forms are less, and such as terminal box is with a diode, is mainly used on traffic sign, street lamp device.Had in the past and inside terminal box, to fill five diodes, and can't see now, uneconomical.
Terminal box is the wiring hinge that solar power generation assembly outwards exports electric energy.Bypass diode is designed to be arranged in terminal box, is generally provided with many bypass diodes in terminal box, realizes reverse parallel connection respectively with each string group silicon cell in solar power generation assembly.
The terminal box that prior art manufactures and designs adopts discrete package device monomer diode, by people's work card press-fit join or with SMD device by reflow soldering, on copper component bypass diode being assembled into junction box or copper conductive plate; Terminal box body is plastics manufactures, and it is made up of box body, lid, sealing ring, wire lock nut, waterproof ventilated membrane etc.; Copper polar plate in terminal box or copper component are pre-assembled in box body or by being installed in terminal box after reflow soldering diode.Terminal box production mounting process step is various, and manpower consumption is larger.
Solar power generation assembly terminal box performs according to IEC-61215 standard at present; Some project demand in standard is reached concerning the terminal box of prior art, there is certain difficulty: as, solar power generation assembly terminal box seal standard, the structure of butted line box and lid and sealing ring material require very high, the product of general terminal box factory all improves and test, just by the test requirements document of certification authority through adjustment repeatedly; Even so, but terminal box still there will be sealing property decline in long-time outdoor use, and the phenomenon that is corroded appears in inside, affects useful life.
The requirement of electrical equipment creepage distance, is not less than 20mm from the gap of terminal box and lid to internal current conductor distance, and this just needs to increase junction box body sum internal structure to reach requirement, adds consumption and the cost of material; The junction box of prior art all has necessarily large space, and inner space is externally requirement sealing.Diode is when junction box works, and its heating causes inner air to expand, and box internal pressure is strengthened and causes box body, lid are out of shape and collapse out, so need the waterproof ventilated membrane adopting price more expensive, solves air expansion issues, adds material and installation cost; The problems referred to above not only make terminal box greatly increase for the difficulty reaching IEC-61215 standard, have also increased considerably cost of goods manufactured.
In order to solve the problem, recent market is proposed full potting compound junction box, namely terminal box is installed to after in electrification component in solar components manufacturer, to thorax perfusion fluid sealant in box body.Although the program solves gas expansion and the sealing problem of the existence of above-mentioned terminal box, add the manufacturing process of solar components client, production equipment and manipulation strength, add material and the manufacturing cost of solar components production firm.
External only a few terminal box manufacturer at present, after adopting discrete package device monomer diode and copper polar plate to be welded, carries out the shaping of terminal box integral molded plastic.Because discrete package device monomer diode has carried out an injection molded, its structure is tight, and stress buffer cannot be taked to protect to chip, internal stress is large.When carrying out quadric injection mould, because of material therefor property difference, add high temperature, high pressure and Material shrinkage, cause diode fails ratio higher, there is reliability hidden danger in terminal box, the method does not obtain spread always.
In addition, also there is research and development unit to propose the technical scheme of photovoltaic bypass diode (led) module, be that three diode chip for backlight unit are integrated, simplify the processing step of terminal box manufacturer welding assembly diode.But from structure and application requirement, module is still fixed on junction box by the method for installing, and terminal box needs to reach original seal request, ventilation requirement; Module chips limits by structural manufacturing process, fails to be provided with stress buffer structure.Its larger volume and different materials are under the impact of working temperature, and material expansion produces stress influence to chip, there is certain impact useful life to product.The overall manufacturing cost of terminal box declines little.The complexity of manufacturing process transfers to diode manufacturer from terminal box factory.
Utility model content
The utility model is for above problem, and provide a kind of under guaranteeing to realize the prerequisite to the scene protection of solar panel hot spot, cost is cheaper, the solar power generation assembly terminal box that effective utilization is higher.
The technical solution of the utility model is: comprise box body, the the first ~ tetra-substrate is established in described box body, the first ~ tetra-substrate is equipped with the convergent belt joint for connecting cell piece in solar power generation assembly, wherein first and the 4th substrate be also provided with described solar power generation assembly export positive and negative connecting-wire connector;
Described the first ~ tri-substrate is respectively equipped with the first ~ tri-groove; The the first ~ tri-diode chip for backlight unit is respectively equipped with in described the first ~ tri-groove;
The P face of described first diode chip for backlight unit connects the second substrate by the first brace;
The P face of described second diode chip for backlight unit connects the 3rd substrate by the second brace;
The P face of described 3rd diode chip for backlight unit connects the 4th substrate by the 3rd brace.
The protecting glue for covering chip is provided with in described the first ~ tri-groove.
Described box body is once injection moulding; The bottom surface of described box body is provided with heat dam.
The sidewall of described box bottom heat dam is provided with air-vent.
The bottom of described box body is provided with a strip window, and described the first ~ tetra-on-chip each convergent belt is exposed;
The both sides, top of described box body are respectively equipped with positive lead joint window and negative lead joint window.
Described groove is circular oval or square or rectangle.
Described groove outside is also provided with at least one ring annular groove, forms wave groove.
One and the above current expansion chip in parallel with chip in groove is also provided with in each described groove.
Semiconductor diode chip is directly welded on the copper base plate of band ripple glaze shape by the utility model, after carrying out stress buffer protection, adopts single injection-molded, directly completes the main body manufacture of solar components terminal box chip.Solve stresses of parts Problem of Failure, terminal box sealing problem, heat conduction problem and junction box space gases expansion issues that in prior art, solar power generation assembly terminal box exists.Simplify the using method of solar components client, eliminate process for filling colloid into.Significantly reduce the manufacture of existing terminal box, application cost and productive labor intensity.Be conducive to the miniaturization and the automated production that realize terminal box.The utility model by terminal box manufacture, by diode manufacture and terminal box manufacture.Be designed to a step complete, decrease many places and be welded to connect a little, simplify heat conduction path and reduce thermal resistance.The utility model changes the tactic pattern of traditional solar power generation assembly terminal box, be directly installed on substrate by chip, then integral molded plastic is shaping, decreases production process, greatly saved production cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model,
Fig. 2 is B-B cutaway view in Fig. 1,
Fig. 3 is the vertical view of Fig. 1,
Fig. 4 is A-A cutaway view in Fig. 1,
Fig. 5 is structure principle chart of the present utility model,
Fig. 6 is the enforcement two of the utility model further groove structure,
Fig. 7 is the enforcement three of the utility model further groove structure,
Fig. 8 is the enforcement four of the utility model further groove structure,
Fig. 9 is the enforcement five of the utility model further groove structure,
Figure 10 is the structural representation of the utility model substrate frame,
Figure 11 is C-C cutaway view in Figure 10,
Figure 12 is M place partial enlarged drawing in Figure 11,
Figure 13 is the structural representation after the utility model encapsulation,
Figure 14 is the structural representation cutting off connecting bridge after the utility model encapsulation,
Figure 15 is schematic circuit of the present utility model.
In figure
10 is substrate frame, and 100 is raised structures, and 101 are process transition bars one, 102 are process transition bars two, 103 are process transition bars three, 104 are process transition bars four, 105 are process transition bars five, 106 is process transition bars six,
11 is first substrates, and 110 is first grooves, and 111 is first convergent belt joints, and 112 is positive terminals,
12 is second substrates, and 120 is second grooves, and 121 is second convergent belt joints,
13 is the 3rd substrates, and 130 is the 3rd grooves, and 131 is the 3rd convergent belt joints,
14 is the 4th substrates, and 141 is the 4th convergent belt joints, and 142 is anode connectors,
21 is first diode chip for backlight unit,
22 is second diode chip for backlight unit,
23 is the 3rd diode chip for backlight unit,
31 is first braces,
32 is second braces,
33 is the 3rd braces,
4 is protecting glue,
5 is box bodys, and 51 is strip windows, and 52 is positive lead joint windows, and 53 is negative lead joint windows, and 54 is heat dams, and 5411 is air-vents one, and 5412 is air-vents two, and 55 is positive pole wire casings, and 56 is negative pole wire casings.
Embodiment
The utility model is as shown in figures 1-15: comprise box body 5, the the first ~ tetra-substrate 11,12,13,14 is established in described box body 5, the first ~ tetra-substrate 11,12,13,14 is equipped with the convergent belt joint (i.e. the first convergent belt joint 11, second convergent belt joint 12, the 3rd convergent belt joint 13, the 4th convergent belt joint 14 in Figure 14) for connecting cell piece in solar power generation assembly, wherein first and the 4th substrate 11,14 be also provided with described solar power generation assembly export positive and negative connecting-wire connector 112,142;
Described the first ~ tri-substrate 11,12,13 is respectively equipped with the first ~ tri-groove 110,120,130; The the first ~ tri-diode chip for backlight unit 21,22,23 is respectively equipped with in described the first ~ tri-groove 110,120,130;
The P face of described first diode chip for backlight unit 21 connects the second substrate 12 by the first brace 31;
The P face of described second diode chip for backlight unit 22 connects the 3rd substrate 13 by the second brace 32;
The P face of described 3rd diode chip for backlight unit 23 connects the 4th substrate 14 by the 3rd brace 33;
The circuit theory formed after connecting as shown in figure 15.
Described groove is circular oval or square or rectangle.
Described groove outside is also provided with at least one ring annular groove, forms wave groove.
Also be provided with in each described groove one and the above current expansion chip in parallel with chip in groove (as shown in Fig. 6,7,9 another or more other chip, form parallel-connection structure).
Aforementioned grooves is on the one hand the welding storage tank as accommodating chip in the utility model, and its structure has certain elasticity on the other hand, when there is thermal deformation, can effective absorption portion strain energy of distortion, and avoid chip to bear deformation force.In addition can guarantee that protecting glue can even, conforming curing molding.
The protecting glue 4 for covering chip is provided with in described the first ~ tri-groove 110,120,130.The effect of protecting glue 4 is: avoid chip to expose, the thermal deformation energy of absorption portion metalwork, stops box body injected plastics material contact chip, reduces cell material expanded by heating to the stress influence of chip, absorbs and the heat produced in conduction portion chip operation process.
Described box body 5 is once injection moulding; The bottom surface of described box body 5 is provided with heat dam 54.Its effect avoids the heat of each chip in the utility model to deposit to Solar panel backside (because generally terminal box 5 is all mounted in the solar battery group back side).
The sidewall of described box body 5 bottom surface heat dam 54 is provided with air-vent.In concrete enforcement, on long limit, offer air-vent 1, on minor face, offer air-vent 2 5412; Form cross-ventilation.
The bottom of described box body 5 is provided with a strip window 51, and each convergent belt (namely 111 ~ 114) on described the first ~ tetra-substrate 11,12,13,14 is exposed; Be convenient to connect solar battery group.
The both sides, top of described box body 5 are respectively equipped with positive lead joint window 52 and negative lead joint window 53.
For ease of draw positive pole, negative line, box body 5 also offers positive pole wire casing 55, negative pole wire casing 56, make lead-out wire accommodating, be positioned in two grooves.
Processing method of the present utility model is carried out according to the following steps:
1), framework punch press process; First, the position of the first substrate, the second substrate and the 3rd substrate arranges three ripple pits by drawing process;
Then carry out stamping-out, the framework after stamping-out has the first ~ four substrate, and the process transition that the first ~ four substrate is still connected as a single entity article ~ six;
Optimize, second, third, corresponding subsequent soldering step on the 4th substrate, preferably process corresponding raised structures 100, be convenient to be welded to connect sheet;
2) welding chip, brace; First in each ripple pit, insert weld tabs, chip, then add brace, chip is connected with the substrate being in rear portion, location, welding;
3), injecting glue; Protecting glue is injected, solidification on each chip top and ripple pit; Obtained frame assembly;
4), injection mo(u)lding; Frame assembly is put into terminal box shaping mould and carry out injection moulding;
Obtained overall terminal box; Described overall terminal box retains processes window, and bottom heater and solar panel form insulated space, and radiate heat and ventilate groove is established in bottom, side;
5), in terminal box processes window, process transition bar one ~ six is excised with blanking die; As Figure 14;
6), junction box diode behavior is measured;
7), output line is connected; (riveted joint, welding)
8), wiring window aperture seal.
Described protecting glue is Silica hydrogel and/or silicon rubber, or has flexible dielectric resin material after solidification.
Claims (8)
1. solar power generation assembly terminal box, comprise box body, the the first ~ tetra-substrate is established in described box body, the first ~ tetra-substrate is equipped with the convergent belt joint for connecting cell piece in solar power generation assembly, wherein first and the 4th substrate be also provided with described solar power generation assembly export positive and negative connecting-wire connector;
It is characterized in that, described the first ~ tri-substrate is respectively equipped with the first ~ tri-groove; The the first ~ tri-diode chip for backlight unit is respectively equipped with in described the first ~ tri-groove;
The P face of described first diode chip for backlight unit connects the second substrate by the first brace;
The P face of described second diode chip for backlight unit connects the 3rd substrate by the second brace;
The P face of described 3rd diode chip for backlight unit connects the 4th substrate by the 3rd brace.
2. solar power generation assembly terminal box according to claim 1, is characterized in that, is provided with the protecting glue for covering chip in described the first ~ tri-groove.
3. solar power generation assembly terminal box according to claim 2, is characterized in that, described box body is once injection moulding; The bottom surface of described box body is provided with heat dam.
4. solar power generation assembly terminal box according to claim 3, is characterized in that, the sidewall of described box bottom heat dam is provided with air-vent.
5. solar power generation assembly terminal box according to claim 2, is characterized in that, the bottom of described box body is provided with a strip window, and described the first ~ tetra-on-chip each convergent belt is exposed;
The both sides, top of described box body are respectively equipped with positive lead joint window and negative lead joint window.
6. solar power generation assembly terminal box according to claim 1, is characterized in that, described groove is circular oval or square or rectangle.
7. solar power generation assembly terminal box according to claim 1, is characterized in that, described groove outside is also provided with at least one ring annular groove, forms wave groove.
8. according to claim 1 ~ 7 in arbitrary described solar power generation assembly terminal box, it is characterized in that, in each described groove, be also provided with one and the above current expansion chip in parallel with chip in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081531.8U CN204361988U (en) | 2015-02-05 | 2015-02-05 | Solar power generation assembly terminal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081531.8U CN204361988U (en) | 2015-02-05 | 2015-02-05 | Solar power generation assembly terminal box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204361988U true CN204361988U (en) | 2015-05-27 |
Family
ID=53263433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520081531.8U Expired - Fee Related CN204361988U (en) | 2015-02-05 | 2015-02-05 | Solar power generation assembly terminal box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204361988U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104579158A (en) * | 2015-02-05 | 2015-04-29 | 蒋罕琦 | Junction box for solar power generating assembly and machining method of junction box |
| EP3595170A4 (en) * | 2017-03-10 | 2021-01-20 | Jiangsu Tonglin Electric Co., Ltd | Low-pressure chip packaging type junction box and processing method thereof for solar power generation assembly |
-
2015
- 2015-02-05 CN CN201520081531.8U patent/CN204361988U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104579158A (en) * | 2015-02-05 | 2015-04-29 | 蒋罕琦 | Junction box for solar power generating assembly and machining method of junction box |
| EP3595170A4 (en) * | 2017-03-10 | 2021-01-20 | Jiangsu Tonglin Electric Co., Ltd | Low-pressure chip packaging type junction box and processing method thereof for solar power generation assembly |
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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: 20150527 Termination date: 20180205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |