Front-face gate electrode of solar cell
A technology of solar cells and solar cells, which is applied in the field of solar cells, can solve problems such as the waste of the light-receiving area of auxiliary grid lines, and achieve the effects of increasing photoelectric conversion efficiency, increasing costs, and simple and easy manufacturing processes
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Embodiment 1
[0023] figure 1 It is a schematic diagram of the distribution structure of the front grid electrode of the solar cell provided by Embodiment 1 of the present invention. refer to figure 1 The front grid electrode of the solar cell is distributed on the surface of the solar battery sheet 10, the front grid electrode includes a main grid line 11 and an auxiliary grid line 12 connected to the main grid line 11, and the auxiliary grid line 12 is in a mesh shape distributed.
[0024] Specifically, the sub-grid line 12 is composed of two sets of intersecting parallel lines, the angle formed between the sub-grid line 12 and the main grid line 11 is greater than 0° and less than 90°, and the sub-grid line 12 and the The angle included by the busbar lines 11 is larger than 90° and smaller than 180°. The line width of the sub-gate lines 12 ranges from 1 μm to 250 μm, and the vertical distance between two adjacent parallel sub-gate lines is from 1 μm to 20000 μm.
[0025] The front gr...
Embodiment 2
[0030] figure 2 It is a schematic diagram of the distribution structure of the front grid electrodes of the solar cell provided by Embodiment 2 of the present invention. refer to figure 2 , different from Embodiment 1, the busbars 21 included on the surface of the solar cell 20 are three parallel lines, the line width of the three busbars 21 is 1.6mm, and the distance between the busbars 21 is 52mm . For the convenience of expression, the three busbars 21 are respectively referred to as the first busbar 21a, the second busbar 21b and the third busbar 21c, and the sub-barriers on the left side of the first busbar 21a are called The sub-gate line between the first group of sub-gate lines 22a, the first main gate line 21a and the second main gate line 21b is called the second group of sub-gate lines 22b, the second main gate line 21b and the third main gate line 21c. The sub-gate lines in between are called the third group of sub-gate lines 22c, and the sub-gate lines on the r...
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