Back electrode design method for reducing unit consumption

A backside electrode and design method technology, applied in the direction of circuits, electrical components, sustainable manufacturing/processing, etc., can solve the problems of high production costs, achieve the effects of reducing welding difficulty, saving paste, and reducing expansion coefficient
CN102254993AInactive Publication Date: 2011-11-23ZHEJIANG FORTUNE ENERGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG FORTUNE ENERGY
Publication Date
2011-11-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a back electrode design method for reducing unit consumption. The back electrode design method for reducing unit consumption comprises the following steps of: A, designing back electrodes into two parallel electrodes having the same structure, wherein the distance between an end part of each electrode and an edge of a silicon chip is 5 to 10mm; B, forming sawteeth at the periphery of each electrode, wherein the sawteeth have the width of 0.4 to 0.8mm, and a space between two adjacent sawteeth is 0.5 to 0.7mm; C, forming two columns of holes on each electrode, wherein the holes are formed at the same interval corresponding to hollow parts of the sawteeth; and D, equally segmenting each electrode into three sections, wherein each section has the length of 10 to 25mm, a space between two adjacent sections of the electrode is 20 to 30mm, and the dimension of each section of the electrode is different from the space between the two adjacent sections of the electrode. The invention has the advantages that: each electrode is segmented into three sections, an expansion coefficient can be reduced, the component welding difficulty is reduced, paste is saved, and the production cost is reduced.
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Description

technical field

[0001] The invention relates to a back electrode of a solar cell, in particular to a design method for the back electrode which reduces unit consumption. Background technique

[0002] As the world's demand for new energy increases, the sales of solar cells are getting better and better, and the back electrode is an important part of solar cells. A back electrode in the prior art such as figure 1 As shown, it consists of two electrodes with the same structure. However, when the back electrode is screen-printed, more paste is used, the cost is higher, and the coefficient of expansion is also higher. Contents of the invention

[0003] The purpose of the present invention is to provide a method for designing the rear electrode with reduced unit consumption, so as to solve the problem of high production cost in the prior art.

[0004] The technical solution adopted in the present invention is to provide a method for designing the back electrode that reduces u...

Claims

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