CN205542832U

CN205542832U - Electrically conductive module of interconnection and solar wafer

Info

Publication number: CN205542832U
Application number: CN201520833529.1U
Authority: CN
Inventors: 武宇涛
Original assignee: Suzhou Guangxinxiangyuan Energy Technology Co Ltd
Current assignee: Suzhou Guangxinxiangyuan Energy Technology Co Ltd
Priority date: 2015-10-26
Filing date: 2015-10-26
Publication date: 2016-08-31
Anticipated expiration: 2025-10-26

Abstract

The utility model provides an electrically conductive module of interconnection and solar wafer, the electrically conductive module of interconnection includes the base member conducting material that a plurality of intervals set up, fixedly connected with linkage segment between the base member conducting material. The utility model discloses an electrically conductive module of interconnection can make production efficiency increase substantially when photovoltaic module prepares for fixed knot constructs. The photovoltaic cell of preparation can improve generated power 2%~5%, improves production efficiency simultaneously.

Description

A kind of interconnection conductive module and solar battery sheet

Technical field

This utility model relates to a kind of interconnection conductive module and solar battery sheet, belongs to technical field of photovoltaic power generation.

Background technology

Conventional photovoltaic module is made up of photovoltaic cells, conductive interconnections structure and various encapsulating material.

Photovoltaic cells, the i.e. Independent Power Generation unit of standard size (usual 5,6 sizes), from original naked silicon chip, it is prepared from through the technique that multiple tracks is complicated by cell piece maker, last lower surface thereon prepares metallized electrode structure, carrier collection that battery unit surface can be produced by this metallized electrode structure also collects, and respectively by playing collection and collecting the different metallic electrode structure of effect and correspondingly realize.Such as, for conventional P-type crystal silicon cell piece, its electrode structure at right side includes referring to grid line and main gate line, refers to that grid line acts the effect collecting battery, main gate line can be collected from the electric current referring to grid line, and backplate is the most only similar to the structure of front main grid line.

Independent photovoltaic cells, owing to power is the least, actual life or engineering can't be directly used in, have to pass through encapsulation link, become there is the battery component of the considerable power of comparison by a number of battery cells in series, generally formed by the encapsulation of 30-80 block battery cells in series, it is however generally that, such component power is up to various criterion grades such as 100W, 200W, 300W.The when that photovoltaic cell component being applied out of doors, it is necessary to the effect of the external environment conditions such as bearing temperature, humidity, impact, so photovoltaic module is typically formed by waterproof, moistureproof, the back veneer material of impact force proof, adhesive material and glass-encapsulated.

Conductive interconnections material, the series connection being used for realizing battery unit expands, usually tin-coated copper bandlet.In concrete potting process, i.e. during series welding, copper flat welding the bus electrode of battery upper and lower surface is sequentially connected in series, thus forms more massive battery strings.The photovoltaic cell structure with upper and lower metallic electrode of rule, the most various crystal silicon cells at present, are essentially all this traditional concatenation technique of employing.

It is to be noted, the metallic electrode structure of the upper and lower surface of photovoltaic cells, the version of conductive interconnections material and potting process, this three is closely-related, directly affects photovoltaic cell and the throughput rate of assembly, production stability, production cost and generated output.Such as, from the point of view of battery unit, the most conventional front main grid line quantity is three or four, experiment simultaneously shows, greater number of main gate line (such as 10 or more) can reduce the transmission range of battery, thus reduce photogenerated current power loss in terms of transmission, the unit light photoelectric transformation efficiency of battery can be improved, but premise is not result in the optical block loss that more main gate line causes；For current conductive interconnections material (i.e. the flat welding of copper), general width 1.0mm-2mm, it is mainly used in three grid or four grid cells, if battery unit main gate line quantity is significantly increased, just require that copper flat welding width to be also correspondingly greatly decreased, the most excessive eclipsing loss even can exceed the gain that the grid line quantity of increase is brought, actually, in reality produces, flat welding can not be made too narrow, not so can significantly affect its intensity and supportive, and cause the difficulty positioning alignment, the complexity of equipment is also substantially improved simultaneously.

In Application No.201410083983.XAnd CN201410587635.6Chinese invention patent application in refer to a kind of stealthy metallization packaged technique (SMP, stealth metallization packageing), reflective electrode or the Nonmetallic reflective device i.e. using cross section to be triangle, the light being emitted onto in main gate line or interconnecting strip reflexes to battery surface effective coverage, retrieves the optical block loss originally caused by main gate line；This technology can effectively solve the problem that main gate line welding blocks, and the problem that more main gate line quantity can cause bigger photovoltaic to block.But meanwhile, along with the increase of main gate line quantity, it is necessary at its surface soldered or bonding greater number of SMP electrode, greatly have impact on the raising of speed of production.

So, either conventional flat welding welding encapsulation technology or stealthy metallized packaging technology, it is required for finding a kind of effective scheme, this synthtic price index about manufacturing cost, throughput rate and process complexity run into when can efficiently solve the series welding of more most main gate line battery unit.

It is contemplated that by various conductive interconnections material structure forms, the complex optimum of battery structure and technical process efficiently solves the problems referred to above.

Summary of the invention

This utility model provides a kind of interconnection conductive module and solar battery sheet.

For reaching above-mentioned purpose, the first technical scheme that this utility model uses is: a kind of interconnection conductive module, described interconnection conductive module includes some spaced matrix conductive materials, is fixedly connected with linkage section between described matrix conductive material.

Preferably technical scheme is: described matrix conductive material is welding.

Preferably technical scheme is: the flat welding of copper that described welding is tin plating, the flat welding of the most tin plating copper or triangle reflection welding.

Preferably technical scheme is: by being welded and fixed between described matrix conductive material and linkage section.

Preferably technical scheme is: the spacing between described matrix conductive material center line is 3 ~ 75 millimeters.

Preferably technical scheme is: by being adhesively fixed between described matrix conductive material and linkage section.

Preferably technical scheme is: described matrix conductive material and linkage section are one-body molded.

Preferably technical scheme is: the quantity of described matrix conductive material is 2 ~ 50.

Preferably technical scheme is: a length of 5 ~ 150 millimeters of described matrix conductive material.

For reaching above-mentioned purpose, the second technical scheme that this utility model uses is: a kind of solar battery sheet, the interconnection conductive module that described solar battery sheet is provided with in technique scheme.

Owing to technique scheme is used, this utility model compared with prior art has the advantage that

Interconnection conductive module of the present utility model is fixed structure, and production efficiency can be made to increase substantially when prepared by photovoltaic module.

Accompanying drawing explanation

Accompanying drawing 1 is interconnection conductive module diagram.

Accompanying drawing 2 is the solar battery sheet schematic diagram of different electrode structure at right side.

Accompanying drawing 3 is the cascade process schematic diagram of interconnection module.

In the figures above, 1, matrix conductive material；2, front side interconnection module；3, back side interconnecting strip；4, solar battery sheet；5, grid line is referred to；6, conflux grid line.

Detailed description of the invention

Below in conjunction with the accompanying drawings and this utility model is further described by embodiment:

Notice, structure depicted in this specification institute accompanying drawings, ratio, size etc., the most only in order to coordinate the content disclosed in description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of this utility model, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, under not affecting effect that this utility model can be generated by and the purpose that can reach, all should still fall in the range of the technology contents disclosed in this utility model obtains and can contain.Simultaneously, in this specification cited as " on ", D score, "left", "right", the term of " middle " and " " etc., it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of this utility model, being altered or modified of its relativeness, changing under technology contents without essence, when being also considered as the enforceable category of this utility model.

Embodiment: a kind of interconnection conductive module and solar battery sheet

Seeing shown in accompanying drawing 1 ~ 3, a kind of interconnection conductive module, described interconnection conductive module includes some spaced matrix conductive materials 1, is fixedly connected with linkage section between described matrix conductive material 1.

It is preferred embodiment: described matrix conductive material is welding.

It is preferred embodiment: the flat welding of copper that described welding is tin plating, the flat welding of the most tin plating copper or triangle reflection welding.

It is preferred embodiment: by being welded and fixed between described matrix conductive material and linkage section.

It is preferred embodiment: the spacing between described matrix conductive material center line is 3 ~ 75 millimeters.

It is preferred embodiment: by being adhesively fixed between described matrix conductive material and linkage section.

It is preferred embodiment: described matrix conductive material and linkage section are one-body molded.

It is preferred embodiment: the quantity of described matrix conductive material is 2 ~ 50.

It is preferred embodiment: a length of 5 ~ 150 millimeters of described matrix conductive material.

The interconnection conductive module using such scheme is fixed on cell piece and i.e. obtains solar battery sheet.

Embodiment two: a kind of interconnection conductive module and solar battery sheet

See shown in accompanying drawing 1 ~ 3, a kind of interconnection conductive module and solar battery sheet, preparation technology includes:

Step one, prepared by battery unit

First by preparing 6 polysilicon solar cell front electrode half tones as shown in first figure of Fig. 2, wherein main gate line is row graph, and quantity is 8, every electrode centers spacing 20mm, and main gate line width is 0.5mm；Backplate back surface field pattern is consistent with conventional electric solar energy cell piece 4, and backplate quantity is four.The back side interconnecting strip 3 of solar battery sheet 4, refer to that grid line 5 and the grid line 6 that confluxes are well prepared in advance.

Choose cell piece stable with a collection of efficiency comparison in production line, the a collection of solaode with above-mentioned front electrode pattern is made with half tone, through oversintering, test, sort, pick out the battery unit of at least 60 gears, in case rear module preparation uses.

Step 2, prepared by interconnection conductive module

Preparing 0.6mm width, the flat welding of tin-coated copper thick for 0.15Mm, wherein tin thickness is 50 microns.

Flat for above-mentioned copper welding is bent into the shape having shown in Fig. 1, the most each branch spacing 20mm, and each branch length is 156mm, and the radius of the radian of corner is 2Mm, and each branch bottom surface is smooth.

Above-mentioned module is prepared 70 pieces, in case subsequent step uses.

Step 3, series welding, encapsulation

Four backplates of every battery are welded the flat welding of tin-coated copper of 150mm length, makes every welding stretch out battery limit edge 2.5mm.

Interconnection conductive module is directed at the front bus electrode of battery unit, makes one end of all bendings stretch out cell piece other end edge 2.5mm, as it is shown on figure 3, be welded to bus electrode surface afterwards, complete the connection of battery unit and interconnection module.

Again flat with the back side for the interconnection module of above-mentioned cell piece welding successively order is welded, as it is shown on figure 3, form the battery strings with 10 battery units, be sequentially prepared such 6 string batteries.

In the usual way, above-mentioned battery strings is laid in order with glass, EVA, back veneer material, through EL(electroluminescent) test confirms after zero defect, send into laminating machine laminating, after lamination is good, after treating common cooling, then assemble aluminum frame and rosette after EL test confirms zero defect, complete the preparation of invention components.

Embodiment three: a kind of interconnection conductive module and solar battery sheet

Step one, prepared by battery unit

First as preparing 6 polysilicon solar cell front electrode half tones as shown in second figure of Fig. 2, wherein main gate line is row graph, and quantity is 8, every electrode centers spacing 20mm, main gate line width is 0.2mm, and every three grid lines share a solder joint, and welding spot size is 0.5mm*0.5mm；Backplate back surface field pattern is consistent with conventional batteries, and backplate quantity is four.

Step 2, prepared by interconnection conductive module

The preparation length of side is the triangular prism reflective solder strip of 1.0Mm, and surface is through mirror process.

Above-mentioned reflective solder strip is bent into the shape having shown in Fig. 1, the most each branch spacing 20mm, and each branch length is 156mm, and the radius of the radian of corner is 2Mm, and each branch bottom surface is smooth, and bottom surface is all same triangle cylinder.

Above-mentioned module is prepared 70 pieces, in case subsequent step uses.

Step 3, series welding, encapsulation

The photovoltaic cell prepared by above-described embodiment, can improve generated output 2% ~ 5%, improve production efficiency simultaneously.

Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow person skilled in the art will appreciate that content of the present utility model and to implement according to this, can not limit protection domain of the present utility model with this.All equivalence changes made according to this utility model spirit or modification, all should contain within protection domain of the present utility model.

Claims

1. an interconnection conductive module, it is characterised in that: described interconnection conductive module includes some spaced matrix conductive materials, is fixedly connected with linkage section between described matrix conductive material.

Interconnection conductive module the most according to claim 1, it is characterised in that: described matrix conductive material is welding.

Interconnection conductive module the most according to claim 2, it is characterised in that: the flat welding of copper that described welding is tin plating, the flat welding of the most tin plating copper or triangle reflection welding.

Interconnection conductive module the most according to claim 1, it is characterised in that: by being welded and fixed between described matrix conductive material and linkage section.

Interconnection conductive module the most according to claim 1, it is characterised in that: the spacing between described matrix conductive material center line is 3 ~ 75 millimeters.

Interconnection conductive module the most according to claim 1, it is characterised in that: by being adhesively fixed between described matrix conductive material and linkage section.

Interconnection conductive module the most according to claim 1, it is characterised in that: described matrix conductive material and linkage section are one-body molded.

Interconnection conductive module the most according to claim 1, it is characterised in that: the quantity of described matrix conductive material is 2 ~ 50.

Interconnection conductive module the most according to claim 1, it is characterised in that: a length of 5 ~ 150 millimeters of described matrix conductive material.

10. a solar battery sheet, it is characterised in that: described solar battery sheet is provided with the interconnection conductive module described in claim 1 ~ 9 any claim.