PERC battery piece high-speed laser grooving method and device based on rotating mirror and PERC battery piece
A technology of laser slotting and battery sheet, applied in laser welding equipment, circuits, photovoltaic power generation, etc., can solve the problems of low efficiency, inconvenient round hole slotting, slow speed, etc., to achieve improved slotting speed and good slotting quality , the effect of improving production efficiency
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Embodiment 1
[0051] Such as figure 1 As shown, a high-speed laser grooving method for PERC cells based on a rotating mirror includes a laser grooving process, and the laser grooving process includes the following steps:
[0052] S1. Set laser processing parameters;
[0053] S2. Start the laser generating system and project the laser beam;
[0054] S3. The laser beam is injected into the high-speed rotating mirror scanning system, and the high-speed rotating mirror scanning system projects a scanning laser on a two-dimensional plane;
[0055] S4. The scanning laser passes through the f-θ focusing lens group 8 to perform two-dimensional plane scanning on the PERC cell;
[0056] S5. Scanning the laser to slot the round hole of the PERC cell;
[0057] S6. Complete the processing, the laser generating system and the high-speed rotating mirror scanning system stop running.
[0058] Wherein, step S3 includes:
[0059] The laser beam is irradiated onto the vibrating mirror 7;
[0060] The vi...
Embodiment 2
[0072] The method of this embodiment is basically the same as that of Embodiment 1, the difference is that the structure of the device used in this embodiment is as follows: Image 6 As shown, wherein, the high-speed rotating mirror scanning system includes the third reflector 5, the polygonal double-conical rotating mirror 6-2 and the vibrating mirror 7, and the polygonal double-conical rotating mirror 6-2 includes two frustum portions of regular polygons with the same shape , the two truncated cones are arranged opposite to each other, and the top surfaces of the two truncated cones overlap and connect with each other. In this embodiment, the truncated cones are regular octagonal truncated cones, and the angle between the side and the bottom of the truncated cones is 45 degree.
[0073] Applying this device, the laser light emitted by the laser generator 1 is reshaped by the beam expander 3 and the diaphragm 4 after being reflected twice by the mirror group 2, and the reshap...
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Abstract
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