Solar cell sheet and solar cell

Abstract

The invention provides a solar cell sheet and a solar cell. A grid line electrode is arranged on the solar cell sheet, and the grid line electrode comprises a plurality of auxiliary lines and a plurality of electrode contact points, wherein the tail ends of the auxiliary lines on the same side are connected with communicating grid lines in a two-two phase way; and the electrode contact points and the auxiliary grid lines are connected. In the solar cell sheet, because a plurality of electrode contact points are used to replace the traditional main grid line, the consumption of silver paste is greatly reduced, and the production cost is economized. Meanwhile, electrons are ensured to be still conducted and collected when a certain part of auxiliary grid lines are broken, the authenticity and the repeatability of test data are also ensured when an electric performance test is performed by using a probe rank, the electric connection between the grid line electrode and a connecting solder strip can be realized at low temperature by using the conducting adhesive tape bonding way, and the technological adaptability and the stability of the grid line electrode are improved.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a solar cell sheet and a solar cell. Background technique [0002] With the gradual maturity of the photovoltaic market, more and more companies have joined the industry, making the competition in this industry more and more fierce, and reducing costs has become the general trend. Nearly 70% of the cost of solar photovoltaic modules is the cost of crystalline silicon solar cells, and the silver paste used for printing grid electrodes in crystalline silicon solar cells occupies a large proportion of the cost. Therefore, optimizing the grid layout design of solar cells is to reduce A major contributor to the cost of solar cells. [0003] Such as figure 1 As shown, in the prior art, the gate electrode of a crystalline silicon solar cell is usually composed of two parts, the main grid line 1' and the auxiliary grid line 2. The main grid line 1' is used to collect the current gathered by ...

AI Technical Summary

Problems solved by technology

[0009] The invention provides a solar battery sheet and a solar battery to solve the problem of high manufacturing cost of grid wire electrodes

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