Multi-main-grid solar cell, interconnection structure and printing method thereof
A technology of solar cells and interconnection structures, applied in printing, circuits, photovoltaic power generation, etc., can solve problems such as poor welding reliability, low welding tension, and high shading area, and achieve the effects of saving welding strips, reducing width, and reducing slurry consumption
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Embodiment example 1
[0036] Implementation Case 1: A multi-busbar solar cell interconnection structure, including a front electrode and a back electrode, the front electrode includes a plurality of thin grid lines 2 and busbar lines 1, and the number of busbar lines 1 is not less than 9, as shown in figure 1As shown, the example is 12 main grid lines 1, the main grid lines 1 are vertically arranged on the silicon chip, and there are a number of thin grid lines 2 evenly distributed on the main grid lines 1, and the thin grid lines 2 and the main grid lines 1 are perpendicular to each other , and the two ends of the main grid line 1 are extended outward and connected with the terminal welding piece 3, the terminal welding piece 3 provided at the two ends of the main grid line 1 forms an end welding area, and the intersection point of the main grid line 1 and the thin grid line 2 is not Setting solder joints and canceling the structure of solder joints can reduce the shading area and improve photoelec...
Embodiment example 2
[0038] Implementation Case 2: A multi-busbar solar cell interconnection structure, including front electrodes and back electrodes, the front electrodes include a plurality of thin grid lines 2 and busbar lines 1, and the number of busbar lines 1 is not less than 9, as shown in figure 2 As shown, the example is 12 main grid lines 1, the main grid lines 1 are vertically arranged on the silicon chip, and there are a number of thin grid lines 2 evenly distributed on the main grid lines 1, and the thin grid lines 2 and the main grid lines 1 are perpendicular to each other , and the two ends of the main grid line 1 extend outwards and are connected with terminal welding pieces 3, the terminal welding pieces 3 provided at both ends of the main grid line 1 form an end welding area, and the middle part of the main grid line 1 extends upwards and is connected with an inner welding piece 4. The inner welding piece 4 set in the middle of the main grid line 1 forms an inner welding area. T...
Embodiment example 3
[0040] Implementation Case 3: A multi-busbar solar cell, including a front electrode and a back electrode, the front electrode includes a plurality of thin grid lines 2 and busbar lines 1, and the number of busbar lines 1 is not less than 9, as shown in figure 2 As shown, the example is 12 main grid lines 1, the main grid lines 1 are vertically arranged on the silicon chip, and there are a number of thin grid lines 2 evenly distributed on the main grid lines 1, and the thin grid lines 2 and the main grid lines 1 are perpendicular to each other , and the two ends of the main grid line 1 extend outwards and are connected with terminal welding pieces 3, the terminal welding pieces 3 provided at both ends of the main grid line 1 form an end welding area, and the middle part of the main grid line 1 extends upwards and is connected with an inner welding piece 4. The inner welding piece 4 set in the middle of the main grid line 1 forms an inner welding area. There is no solder joint ...
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