CN202142543U

CN202142543U - Crystalline silicon solar cell electrode

Info

Publication number: CN202142543U
Application number: CN201120249543U
Authority: CN
Inventors: 倪志春; 张永红; 王继磊; 邱凯坤
Original assignee: CHINA SUNERGY (NANJING) Co Ltd
Current assignee: CHINA SUNERGY (NANJING) Co Ltd
Priority date: 2011-07-15
Filing date: 2011-07-15
Publication date: 2012-02-08
Anticipated expiration: 2021-07-15

Abstract

The utility model discloses a crystalline silicon solar cell electrode, comprising a plurality of parallel grid lines and at least two parallel main electrodes, wherein the main electrodes are perpendicular to the grid lines. The crystalline silicon solar cell electrode is characterized in that at least one loop grid line that is parallel or substantially parallel with the main electrodes is arranged between the two adjacent main electrodes, so that a loop is formed by the grid lines via the loop grid line and the main electrodes. Due to the addition of the loop grid line between the main electrodes, the region with poor printing can be connected to the adjacent grid lines via the newly-added loop grid line to, together with the main electrodes, form a loop, thereby reducing the effect of broken printing lines on the electrical performance and meanwhile making quite small the influence on the shading area. The crystalline silicon solar cell electrode of the utility model is easily designed and can be prepared just by simple change of an existing screen plate, and is suitable for the design of patterns with different amounts of grid lines.

Description

A kind of electrode of crystal silicon solar energy battery

Technical field

The utility model relates to a kind of electrode of crystal silicon solar energy battery.

Background technology

Crystal silicon solar energy battery, method for printing screen is adopted in the preparation of its electrode more, and front description generally adopts the grid line frame mode vertical with main electrode.The general FF that increases the method for main electrode and the grid line quantity raising battery (fill factor, curve factor: the ratio of peak power output and limited output power that adopts when die size increases; The quality of reflection battery output characteristic, relevant with factors such as series resistance, parallel resistances).Along with market to the increasingly high requirement of battery performance; Require printing area to reduce as far as possible to increase illuminating area; Make that the quantity of main electrode can not random increase, require grid line width more and more narrow when grid line quantity increases, and will guarantee that the good electricity of lines leads; Require the printing lines that higher depth-width ratio is arranged again, require the viscosity of slurry to increase.All these makes the silk screen printing quality obviously descend; The phenomenon (grid line in the dotted line as shown in Figure 1) that the disconnected grid of printing often occur; The bad broken string that causes of grid line printing; Can cause (dotted line inner region shown in Figure 1) charge-trapping loop, broken string zone to prolong, thereby influence the output performance of battery.

The utility model content

The utility model technical problem to be solved; Be to overcome the defective that prior art exists; A kind of electrode of crystal silicon solar energy battery is provided, between two main electrodes, increases the loop grid line of parallel main electrode, the grid line of the newly-increased parallel main electrode of zone passage that bad printing occurs is connected on the adjacent grid line; And form the loop with main electrode, thereby reduced the printing broken string electrical property is influenced.

The electrode of a kind of crystal silicon solar energy battery of the utility model is made up of some the grid lines that are parallel to each other and two main electrodes that are parallel to each other at least, and main electrode is vertical each other with grid line; It is characterized in that: between two adjacent main electrodes, be provided with at least one with the parallel or substantially parallel loop grid line of main electrode, make each grid line through loop grid line and main electrode formation loop.

Said loop grid line can be continuous complete grid line; It also can be discontinuous (dashed line form) grid line.

The utility model; Owing between main electrode, increased the loop grid line, the newly-increased loop grid line of zone passage that bad printing occurs has been connected on the adjacent grid line, and forms the loop with main electrode; Thereby reduced the printing broken string to the electrical property influence, simultaneously very little to the shading area effect again.Simplicity of design is just simply changed and can be accomplished existing half tone; The graphical design that can be fit to different grid line quantity.

Description of drawings

Fig. 1 is the electrode sketch map of prior art solar cell;

Fig. 2 is the electrode structure sketch map of the utility model crystal silicon solar energy battery;

Fig. 3 is the electrode structure sketch map of the utility model crystal silicon solar energy battery;

Fig. 4 be the electrode of the utility model crystal silicon solar energy battery in grid line broken string area circuit loop sketch map;

Fig. 5 is the electrode structure sketch map (the loop grid line is the discontinuous grid line) of the utility model crystal silicon solar energy battery.

Embodiment

Below in conjunction with accompanying drawing, the utility model is elaborated.

Like Fig. 2, shown in 3, the electrode of the crystal silicon solar energy battery of the utility model is made up of some the grid lines that are parallel to each other 1 and two main electrodes that are parallel to each other 2 at least, and main electrode is vertical each other with grid line.Between two adjacent main electrodes 2, be provided with one with the parallel or substantially parallel loop grid line 3 of main electrode, make each grid line through loop grid line and main electrode formation loop.

As shown in Figure 5, this embodiment is provided with two loop grid lines between main electrode 2, and the loop grid line is discontinuous (mode of a space segmentation) grid line.

Said loop grid line, its width can adopt 10-200um.The utility model goes for various crystal silicon solar energy batteries.

The utility model nominal increase the connecting path of every loop grid line and main electrode; The newly-increased loop grid line of zone passage that bad printing occurs is connected on the adjacent grid line and with main electrode forms the loop, having reduced the printing broken string greatly influences (Fig. 4) to electrical property; Very little to the shading area effect simultaneously.

Claims

1. the electrode of a crystal silicon solar energy battery is made up of some the grid lines that are parallel to each other and two main electrodes that are parallel to each other at least, and main electrode is vertical each other with grid line; It is characterized in that: between two adjacent main electrodes, be provided with at least one with the parallel or substantially parallel loop grid line of main electrode, make each grid line through loop grid line and main electrode formation loop.

2. according to the electrode of the said a kind of crystal silicon solar energy battery of claim 1, it is characterized in that: said loop grid line is continuous complete grid line or discontinuous grid line.