CN202167498U

CN202167498U - Positive electrode with unit consumption reduced

Info

Publication number: CN202167498U
Application number: CN2011202367676U
Authority: CN
Inventors: 赵丽艳; 俞超
Original assignee: ZHEJIANG FORTUNE PHOTOVOLTAIC CO Ltd
Current assignee: ZHEJIANG FORTUNE ENERGY CO., LTD.
Priority date: 2011-07-05
Filing date: 2011-07-05
Publication date: 2012-03-14
Anticipated expiration: 2021-07-05

Abstract

The utility model provides a positive electrode with unit consumption reduced, comprising a main grid line and a fine grid line, wherein the main grid line is provided with multiple rows of holes, holes, aperture of each being 0.06 to 0.12mm, are uniformly distributed in the center of the main grid line, and adjacent two rows of holes are arranged at intervals. Beneficial effects of the positive electrode are that real printing cost is reduced by 3% to 12%, and transition efficiency is the same or is slightly improved.

Description

A kind of front electrode that reduces unit consumption

Technical field

The utility model relates to the solar battery sheet front electrode, relates in particular to a kind of front electrode that reduces unit consumption.

Background technology

Along with the increase in demand of the world to new forms of energy, the sales volume of solar battery sheet is also become better and better, and front electrode is the important component part of solar battery sheet.Front electrode is as shown in Figure 1 in the prior art, in the kind electrode production process, uses slurry more, and cost is higher.

The utility model content

The purpose of the utility model provides a kind of front electrode that reduces unit consumption, solves the cost of manufacture problem of higher that exists in the prior art.

The technical scheme that the utility model adopted is, a kind of front electrode that reduces unit consumption comprises main grid line, thin grid line, and the main grid line is provided with the several rows hole.

As the further improvement of such scheme, evenly distributed aperture d is the different size hole of 0.06mm to 0.12mm in the middle of the main grid line, and adjacent two rounds adopt alternate formula to arrange.

The beneficial effect of the utility model is: adopt the utility model scheme actual print cost to reduce and be about between 3% to 12%, conversion efficiency remains unchanged or slightly improves.

Description of drawings

The crystal silicon solar batteries sheet positive electrode structure of Fig. 1 prior art silk screen printing;

The crystal silicon solar batteries sheet main grid line structure of Fig. 2 prior art;

Fig. 3 adopts the battery sheet main grid toe-in composition of the utility model method design.

Among the figure: d representes the diameter that punches on the main grid line; H representes the distance between the center of adjacent two rounds; L representes the centre distance in main grid line edge and first hole; M representes the distance between same row's the center in adjacent two holes.

Embodiment

Below in conjunction with accompanying drawing the utility model technical scheme is elaborated

Like Fig. 1, Fig. 2 and shown in Figure 3, a kind of front electrode that reduces unit consumption comprises main grid line, thin grid line, and the main grid line is provided with the several rows hole.Around the main grid line and the distance between the silicon chip edge be 0.15-0.25mm.The width of thin grid line is 50-90um.Evenly distributed aperture d is the different size hole of 0.06mm to 0.12mm in the middle of the main grid line, and adjacent two rounds adopt alternate formula to arrange.The center distance H of adjacent two rounds is 2d ± 0.005mm, and same row is adjacent, and two hole center distance M are 2d ± 0.005mm, and wherein d is 0.06mm to 0.12mm.L representes the distance at the center in main grid line edge and first hole among the figure.

The cost reduction is about between 3% to 12% during the utility model actual print, and conversion efficiency remains unchanged or slightly improves, and the not corresponding variation of outward appearance.

Embodiment 1

The thin grid line width that this experiment uses certain half tone company to provide is 50um front electrode punching half tone, same batch silicon chip, identical slurry is identical with the working condition of non-punching half tone.Table 1 is the weight in wet base contrast situation after the front electrode of the utility model front electrode and prior art prints.Experimental result shows that the design in this enforcement example has reduced the weight in wet base of silk screen printing, helps reducing the unit consumption of crystal silicon solar batteries sheet.

Table 1

Table 2 is the unit for electrical property parameters contrast situation after the front electrode of the utility model front electrode and prior art prints sintering.Experimental result shows, under the prerequisite that the unit consumption of crystal silicon solar batteries sheet reduces, significant change does not take place its unit for electrical property parameters, and implements in example at this, and conversion efficiency maintains on the basis of former data.

Table 2

Embodiment 2

The thin grid line width that this experiment uses certain half tone company to provide is 85um front electrode punching half tone, same batch silicon chip, identical slurry is identical with the working condition of non-punching half tone.Table 3 is the weight in wet base contrast situation after the front electrode of the utility model front electrode and prior art prints.Experimental result shows that the design in this enforcement example has reduced the weight in wet base of silk screen printing, and the unit consumption reduced rate is 10.27%, helps reducing the unit consumption of crystal silicon solar batteries sheet.

Table 3

Table 4 is the unit for electrical property parameters contrast situation after the front electrode of the utility model front electrode and prior art prints sintering.Experimental result shows, under the prerequisite that the unit consumption of crystal silicon solar batteries sheet reduces, significant change does not take place its unit for electrical property parameters, and parallel resistance has obvious increase, and conversion efficiency increases by 0.13%.

Table 4

It should be noted last that; Above embodiment only is used to explain the technical scheme of the utility model and is unrestricted; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the spirit and the scope of the utility model technical scheme, it all should be encompassed in the claim scope of the utility model.

Claims

1. a front electrode that reduces unit consumption comprises main grid line, thin grid line, it is characterized in that the main grid line is provided with the several rows hole.

2. a kind of front electrode that reduces unit consumption according to claim 1 is characterized in that, evenly distributed aperture (d) is the different size hole of 0.06mm to 0.12mm in the middle of the main grid line, and adjacent two rounds adopt alternate formula to arrange.

3. a kind of front electrode that reduces unit consumption according to claim 1 is characterized in that, around the main grid line and the distance between the silicon chip edge be 0.15-0.25mm.

4. a kind of front electrode that reduces unit consumption according to claim 1 is characterized in that, the width of thin grid line is 50-90um.

5. a kind of front electrode that reduces unit consumption according to claim 2 is characterized in that the center distance of adjacent two rounds (H) is 2d ± 0.005mm, and same row is adjacent, and two hole center distance (M) are 2d ± 0.005mm, and wherein d is 0.06mm to 0.12mm.