CN201956360U

CN201956360U - Solar-battery grid-line electrode

Info

Publication number: CN201956360U
Application number: CN2010206307557U
Authority: CN
Inventors: 张满良; 安丹; 吴廷斌; 谢贤清; 黄红娜
Original assignee: Altusvia Energy Taicang Co Ltd
Current assignee: Altusvia Energy Taicang Co Ltd
Priority date: 2010-11-30
Filing date: 2010-11-30
Publication date: 2011-08-31
Anticipated expiration: 2020-11-30

Abstract

The utility model discloses a solar-battery grid-line electrode, wherein transverse grid lines in the solar-battery grid-line electrode are S-shaped, i.e. the two adjacent transverse grid lines are sequentially connected at a port. Through the S-shaped solar grid lines of the solar-battery grid-line electrode, the light-shielding area is furthest reduced on the basis of ensuring photocurrent conduction, the smearing problem of the grid lines is improved, the consumption of silver slurry is reduced, the solar-battery grid-line electrode is favorable to lowering the production cost, and meanwhile, the conversion efficiency of a solar battery is improved.

Description

A kind of solar cell gate line electrode

Technical field

The utility model relates to the front gate line electrode in the crystal silicon solar energy battery, is a kind of gate line electrode that can improve conversion efficiency of solar cell specifically.

Background technology

The traditional handicraft of present conventional solar cell gate line electrode preparation is printed to fixedly figure for the method that adopts silk screen printing with the Ag slurry on emitter, the Al electrode co-sintered with the back side forms then.Under the situation that the solar battery sheet area is fixed, to obtain high conversion rate, the design of the gate line electrode on the solar cell just plays the important and pivotal role, it has determined series resistance, effective extinction area of battery, reverse saturation current etc., for reducing the shading area of gate line electrode, require grid line to want thin as far as possible, will guarantee certain grid line height simultaneously.

For reducing the shading area of gate line electrode, require gate line electrode to want thin as far as possible, but because the restriction of slurry self character, thin grid width has been close to and has reached limiting value, on this basis, we can only reach the purpose that promotes conversion efficiency by optimizing the grid line shaped design, solar cell battery front side grid line is the conventional design that adopts Fig. 1 to show mostly on the market at present, but conventional grid line design is helpless for the situation of the disconnected grid of main grid outward flange, and the electric current that disconnects on the grid line can only lose (as Fig. 2) in vain.In the face of the defective of conventional design, adopted the mode of ameliorating of perimeter seal design, so that collect the electric current (as Fig. 3) of periphery better, but two hidden danger have also appearred simultaneously, the first, four banding mouth has increased the area of two thin grid undoubtedly, thereby has increased the shading area; The second, because two thin grid design directions that seal are vertical with the print direction of print head, more be prone to the thin grid smear in edge, influence press quality, and increased shading area (see figure 4) indirectly.

The utility model content

The utility model purpose: the purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of metal grid lines that can improve thin grid smear problem is provided.

Technical scheme: to achieve these goals, the utility model provides a kind of solar cell gate line electrode, and horizontal grid line is a S shape in the described solar cell gate line electrode, and promptly laterally adjacent two grid lines connect in turn at port.Such shape had both guaranteed effective absorption of disconnected gate current has also been reduced the shading area to greatest extent, and improved solar cell grid line smear problem to a great extent.

When S shape solar energy grid line described in the utility model the situation of disconnected grid occurs at the grid line edge, because grid line adjacent both ends point links together, so behind the disconnected grid, laterally the photoelectric current on the grid line still transmits with vertical grid line, has improved the conversion efficiency of solar cell.

Beneficial effect: a kind of solar cell grid line described in the utility model compared with prior art has following advantage:

S shape solar energy grid line described in the utility model guarantee the photoelectric current conduction the basis on reduced the shading area to greatest extent, improved the grid line smear problem, reduce silver-colored slurry consumption, helped the reduction of production cost, improved the conversion efficiency of solar cell simultaneously.

Description of drawings

Fig. 1 is a kind of schematic diagram of conventional solar cell gate line electrode in the prior art.

Fig. 2 is a kind of schematic diagram of the disconnected grid of conventional solar cell gate line electrode in the prior art.

Fig. 3 is a kind of schematic diagram of solar cell gate line electrode in the prior art.

Fig. 4 is a kind of schematic diagram of solar cell gate line electrode smear in the prior art.

Fig. 5 is the schematic diagram of solar cell gate line electrode described in the utility model.

Fig. 6 is the schematic diagram of the disconnected grid work of solar cell gate line electrode described in the utility model.

Embodiment

Below in conjunction with specific embodiment, further illustrate the utility model, should understand these embodiment only be used to the utility model is described and be not used in the restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims to the modification of the various equivalent form of values of the present utility model and limit.

Embodiment

A kind of solar cell gate line electrode, horizontal grid line is a S shape in the described solar cell gate line electrode, promptly laterally adjacent two grid lines connect in turn at port.

Claims

1. solar cell gate line electrode is characterized in that: in the described solar cell gate line electrode laterally grid line be S shape, promptly laterally adjacent two grid lines connect in turn at port.