CN104901619A - Manufacturing method of photovoltaic junction box - Google Patents
Manufacturing method of photovoltaic junction box Download PDFInfo
- Publication number
- CN104901619A CN104901619A CN201510268616.1A CN201510268616A CN104901619A CN 104901619 A CN104901619 A CN 104901619A CN 201510268616 A CN201510268616 A CN 201510268616A CN 104901619 A CN104901619 A CN 104901619A
- Authority
- CN
- China
- Prior art keywords
- junction box
- terminal box
- electric conductor
- injection
- diode
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 abstract description 8
- 230000007774 longterm Effects 0.000 abstract description 2
- 239000003292 glue Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 239000004568 cement Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036244 malformation Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
-
- 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
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Photovoltaic Devices (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
The invention discloses a manufacturing method of a photovoltaic junction box. The manufacturing method comprises the following steps that a diode is connected on an electric conductor, and the electric conductor is connected with a cable; the diode, the electric conductor and the cable are integrally buried in a bottom mould; a junction box is formed by one-time injection molding, and a connecting cavity is formed on the junction box; a bus bar is inserted in the connecting cavity; glue is poured in the connecting cavity; and a box cover covers the connecting cavity in a buckling way. With application of the one-time injection-molded junction box, the production process of the junction box is simplified, production efficiency is enhanced, protection grade of the junction box is enhanced and long-term effectiveness of the projection grade is guaranteed.
Description
Technical field
The present invention relates to solar photovoltaic assembly technical field, in particular to a kind of manufacture method of photovoltaic junction box.
Background technology
In today that international energy situation is increasingly serious, every country all increases the dynamics of development solar energy industry, and the application of solar energy is also more and more extensive.Current a kind of main Solar use mode is the photovoltaic effect utilizing semi-conducting material, solar energy is transformed into electric energy and uses.Solar cell is exactly a kind of typical electrooptical device, in actual applications, usually also claims photovoltaic module to be basic applying unit with solar module.Photovoltaic module needs the electric energy utilizing assembly junction box to be produced by photovoltaic module draw and be used usually.Assembly junction box is except drawing electric energy, and usual inside is also provided with diode, in order to protect photovoltaic module.
The mode that junction box structure of the prior art adopts multiple working of plastics to assemble, such as, Authorization Notice No. CN 203708192U, a kind of photovoltaic junction box described in utility model in authorized announcement date on July 9th, 2014, include box body, be provided with diode modules and wiring board in box body, described cartridge outer surface is inlaid with radiator, the diode modules being positioned at box body is attached at the radiator back side, and is electrically connected with the copper conductor on wiring board.Adopt the terminal box of multiple working of plastics assembling mode, produce problems in an assembling process: install loaded down with trivial details, assemble not in place.In use also may produce box body cracking, the problems such as sealing difference.
For above-mentioned technical problem, application number 201010505274.8, the patent application in September 28 2010 applying date provides a kind of Integral injection molded junction box and manufacture method thereof, described Integral injection molded junction box comprises: lid, box body, diode, conducting strip and cable, welding diode on conducting strip, and is bundled together with the mode of conducting strip plastic-injection; Cable is connected to the binding post place of conducting strip, and with the conducting strip be bundled together and diode again use the mode of plastic-injection and box body one-body molded, and to be formed in box body.Wherein, described manufacture method comprises: by welding diode on conducting strip; Carry out first time injection moulding, described diode and described conducting strip plastic cement are bundled together; The technique cutting off described conducting strip connects and cable is connected to the binding post place of described conducting strip; Carry out second time injection moulding, described cable and the diode be bundled together and conducting strip are bundled together with plastic cement further, obtain described Integral injection molded junction box.
Manufacture method described in foregoing invention application comprises quadric injection mould, the plastic cement of the plastic cement parcel first time injection moulding formation of second time injection moulding, the plastic cement formed to make quadric injection mould fuses into one, injection moulding personnel accurately need control the pressure of quadric injection mould, temperature, time, but the manufacture method described in foregoing invention application does not disclose the technical information of this respect.Even if when producing described integral type terminal box, the plastic cement that quadric injection mould is formed fuses into one, but, in actual applications, because terminal box will bear higher temperature, the phenomenon of layering may be there is in the plastic cement that quadric injection mould is formed, cause that the intensity of terminal box reduces, malformation, sealing decline.
Summary of the invention
Technical problem solved by the invention: adopt the photovoltaic junction box that multiple working of plastics assembling mode is formed, exist install loaded down with trivial details, assemble not in place, the technical problem that in use procedure, box body is easy to crack, sealing is poor.Adopt the terminal box that Multi-step injection molding is shaping, due to the more difficult control of injecting condition, terminal box not easily fuses into one, in use, due to the effect of high temperature, may there is lamination in terminal box, causes that the intensity of terminal box reduces, malformation, sealing decline.
The invention provides following technical scheme: a kind of manufacture method of photovoltaic junction box, comprises the following steps:
---diode is connected on electric conductor, and electric conductor is connected with cable;
---diode, electric conductor, cable are integrally imbedded in bed die;
---single injection-molded terminal box, terminal box forms connection chamber;
---in described connection chamber, insert busbar;
---encapsulating in described connection chamber;
---lid buckle closure is on described connection chamber.
By technique scheme, diode, electric conductor, cable are integrally imbedded in bed die after connecting, after matched moulds, single injection-molded terminal box, terminal box forms connection chamber, after die sinking, busbar is inserted in described connection chamber, then encapsulating, afterwards, lid buckle closure, on described connection chamber, forms complete photovoltaic junction box.By technical solutions according to the invention, the junction box body technical problem that in use easy to crack, sealing is poor can be solved; It also avoid through the shaping terminal box of Multi-step injection molding in use, may there is the risk of layering in terminal box under high temperature action.Adopt single injection-molded terminal box of the present invention, not only simplify the production process of terminal box, improve production efficiency, and improve the degree of protection of terminal box, and ensure that the long-term effectiveness of degree of protection.
Further illustrate as of the present invention, the injection pressure of described single injection-molded terminal box is 80Mpa, and the injection time is 7 ~ 8 seconds, and forming temperature maintains 300 degrees Celsius.Afterwards, cool, control cooling time at 12 seconds.So, the overall time of single injection-molded controlled at 19 ~ 20 seconds.
Further illustrate as of the present invention, described electric conductor is provided with a pair protuberance, and described protuberance offers draw-in groove, and described diode two ends are provided with connecting portion, and described connecting portion is closely connected in draw-in groove.Design like this, both ensure that the connection between diode and electric conductor, eliminated again the trouble that prior art adopts welding manner, was conducive to simplifying procedure of processing, cost-saving.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the decomposing schematic representation of the diode of one of the present invention, electric conductor, cable;
Fig. 2 is the structural representation of the terminal box after single injection-molded of the present invention;
Fig. 3 is the structural representation observing described terminal box gained in Fig. 2 from behind;
Fig. 4 is the structural representation of lid of the present invention.
Symbol description in figure:
10-diode; 11-connecting portion;
20-electric conductor; 21-protuberance; 210-draw-in groove; 22-end;
30-connection chamber;
40-cable.
Embodiment
As shown in Figure 1, diode 10 two ends are provided with connecting portion 11, and electric conductor 20 is provided with a pair protuberance 21, and described protuberance 21 offers draw-in groove 210, and electric conductor 20 is provided with both ends 22.
A manufacture method for photovoltaic junction box, comprises the following steps:
The first, the connecting portion 11 of diode 10 is closely connected in the draw-in groove 210 of electric conductor 20, and cable 40 is connected to the both ends 22 of electric conductor 20;
The second, the diode 10 linked into an integrated entity, electric conductor 20, cable 40 are imbedded in bed die;
3rd, after matched moulds, carry out injection, the injection time is 7 ~ 8 seconds, and injection pressure is 80Mpa, and forming temperature maintains 300 degrees Celsius;
4th, cooling, controls at 12 seconds cooling time;
5th, die sinking, terminal box injection mo(u)lding, as shown in Figure 2 and Figure 3, terminal box is formed connection chamber 30, and described diode 10 is positioned at connection chamber 30;
6th, in described connection chamber 30, insert busbar;
7th, encapsulating in described connection chamber 30;
8th, lid (as shown in Figure 4) buckle closure is on described connection chamber 30.
Above content is only better embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (6)
1. a manufacture method for photovoltaic junction box, comprises the following steps:
---diode (10) is connected on electric conductor (20);
---injection mo(u)lding terminal box, terminal box is formed connection chamber (30);
---in described connection chamber (30), insert busbar;
---encapsulating in described connection chamber (30);
---lid buckle closure is on described connection chamber (30);
It is characterized in that: while described diode (10) is connected on electric conductor (20), electric conductor (20) is connected with cable (40), described diode (10), electric conductor (20), cable (40) are integrally imbedded in bed die, and described injection mo(u)lding terminal box is single injection-molded terminal box.
2. the manufacture method of a kind of photovoltaic junction box as claimed in claim 1, is characterized in that: the injection pressure of described single injection-molded terminal box is 80Mpa.
3. the manufacture method of a kind of photovoltaic junction box as claimed in claim 1, is characterized in that: the injection time of described single injection-molded terminal box is 7 ~ 8 seconds.
4. the manufacture method of a kind of photovoltaic junction box as described in claim 1 or 3, is characterized in that: the forming temperature of described single injection-molded terminal box is 300 degrees Celsius.
5. the manufacture method of a kind of photovoltaic junction box as claimed in claim 4, is characterized in that: the cooling time of described single injection-molded terminal box is 12 seconds.
6. the manufacture method of a kind of photovoltaic junction box as claimed in claim 1, it is characterized in that: described electric conductor (20) is provided with protuberance (21), described protuberance (21) offers draw-in groove (210), described diode (10) two ends are provided with connecting portion (11), and described connecting portion (11) is closely connected to draw-in groove (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268616.1A CN104901619A (en) | 2015-05-25 | 2015-05-25 | Manufacturing method of photovoltaic junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268616.1A CN104901619A (en) | 2015-05-25 | 2015-05-25 | Manufacturing method of photovoltaic junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104901619A true CN104901619A (en) | 2015-09-09 |
Family
ID=54034056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510268616.1A Pending CN104901619A (en) | 2015-05-25 | 2015-05-25 | Manufacturing method of photovoltaic junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104901619A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379041A (en) * | 2018-10-09 | 2019-02-22 | 安徽大恒能源科技有限公司 | A kind of assembly technology of photovoltaic management system intelligent wiring 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6475424B1 (en) * | 1998-05-14 | 2002-11-05 | Cambridge Industries, Inc. | Multi-process molding method and article produced by same |
| DE69911839D1 (en) * | 1998-05-08 | 2003-11-13 | Koninkl Philips Electronics Nv | Inductive component |
| KR20080037912A (en) * | 2006-10-27 | 2008-05-02 | 한국기계연구원 | Manufacturing method of close-type channel using injection molding process |
| CN102394252A (en) * | 2011-11-24 | 2012-03-28 | 人和光伏科技有限公司 | Solar cell junction box |
| CN102420544A (en) * | 2010-09-28 | 2012-04-18 | 无锡尚德太阳能电力有限公司 | Integral-type injection molding junction box and manufacturing method thereof |
| CN104579158A (en) * | 2015-02-05 | 2015-04-29 | 蒋罕琦 | Junction box for solar power generating assembly and machining method of junction box |
-
2015
- 2015-05-25 CN CN201510268616.1A patent/CN104901619A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69911839D1 (en) * | 1998-05-08 | 2003-11-13 | Koninkl Philips Electronics Nv | Inductive component |
| US6475424B1 (en) * | 1998-05-14 | 2002-11-05 | Cambridge Industries, Inc. | Multi-process molding method and article produced by same |
| KR20080037912A (en) * | 2006-10-27 | 2008-05-02 | 한국기계연구원 | Manufacturing method of close-type channel using injection molding process |
| CN102420544A (en) * | 2010-09-28 | 2012-04-18 | 无锡尚德太阳能电力有限公司 | Integral-type injection molding junction box and manufacturing method thereof |
| CN102394252A (en) * | 2011-11-24 | 2012-03-28 | 人和光伏科技有限公司 | Solar cell junction box |
| CN104579158A (en) * | 2015-02-05 | 2015-04-29 | 蒋罕琦 | Junction box for solar power generating assembly and machining method of junction box |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109379041A (en) * | 2018-10-09 | 2019-02-22 | 安徽大恒能源科技有限公司 | A kind of assembly technology of photovoltaic management system intelligent wiring box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150909 |
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| RJ01 | Rejection of invention patent application after publication |