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Ultrasonic soldering equipment for solar cell electrode

A solar cell and ultrasonic welding technology, which is applied to welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of poor welding quality and low welding efficiency, and achieve the effects of improving welding efficiency, eliminating virtual welding, and consistent spacing

Inactive Publication Date: 2008-12-31
李毅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to change the existing single-point ultrasonic welding technology of amorphous silicon solar cells, and feed the workpiece manually or semi-automatically, resulting in low welding efficiency and poor welding quality.

Method used

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  • Ultrasonic soldering equipment for solar cell electrode
  • Ultrasonic soldering equipment for solar cell electrode
  • Ultrasonic soldering equipment for solar cell electrode

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0055] Example 1, see embodiment 1 of the present utility model such as figure 1 As shown, the electrode wire is made of metallic aluminum coated tin strip with a thickness of 2 mm and a width of 0.3 mm. The solar cell 6 is an amorphous silicon solar cell based on glass. Under the control of the PLC system, the feeding area sends the amorphous silicon solar cell to the ultrasonic welding area through the transmission device. The tin-coated strip with a width of 0.3 mm is stretched, compressed, and flattened. The metal welding head is welded with a welding pressure of 2MPa and a welding power of 110W. After the electrode welding is completed, the battery of the conveyor device is sent to the automatic wire cutting device 13 to cut off the tin-coated strip, and then the material is discharged. High welding efficiency, smooth solder joints and good appearance. Cooperating with automatic production lines, it can continuously feed, weld and discharge materials.

[0056] The guide...

example 2

[0057] Example 2, the overall structure of this embodiment is the same as Example 1, see Figure 1 to Figure 8 , on the workbench 1, install the solar cell transmission device, the electrode wire pay-off and pressing device 10, the ultrasonic metal spot welding machine 11, the thread cutting device 13 and the PLC numerical control system 12 in order from left to right. The main process steps are as follows: the first step is to arrange the solar cells on the workbench 1; the second step is to drive the solar cells by the transmission device to realize linear feeding; release; pressing and welding on the solar cell; the fourth step, the wire cutting device 13 cuts off the electrode wire.

[0058] In the transmission device, with the installation method of symmetrical arrangement, the rotating shaft of the stepping motor 2 passes through the center hole of the positioning roller 3, and the shafts and holes of the two are connected by interference fit; the stepping motor 2 is ins...

example 3

[0062] Example 3, the technical process of the present invention are as follows:

[0063] 1) Adjust the bracket 9 so that the distance between the positioning rollers 3 arranged symmetrically along the two sides matches the width of the amorphous silicon solar cell;

[0064] 2), PLC controls the stepper motor 2 to work, drives the positioning roller 3 to rotate, and drives the amorphous silicon solar cell 6 to enter the welding area;

[0065] 3), the wire-releasing and pressing device presses the electrode wires on the amorphous silicon solar cell: Step 1, the stepper motor 2 decelerates, and the amorphous silicon solar cell 6 continues to feed;

[0066] Step 2, under the control of the PLC, the cylinder stretches out the telescopic rod 10-6-1, and the crimping wheel 10-5 connected to the telescopic rod 10-6-1 presses the electrode wire 10-2 to the amorphous silicon solar cell 6 superior;

[0067] Step 3, the electrode wire 10-2 is affected by the friction force of the wire ...

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Abstract

The present invention discloses an automatic ultrasonic wave welding equipment for welding amorphous silicon solar cell electrode, which aims to improve current ultrasonic wave metal spot welding machine and add a mechanical wire pressing and take-up device and method to replace manual wire pressing and laying and is technically characterized in that a working table is composed of a feeding zone, a welding zone and a discharging zone. An electrode wire 10-2 is coiled on an uncoiling wheel 10-1 of the electrode wire pressing device 10. A guide wheel 10-3 and an extension-resistant tightening pulley 10-4 are arranged on a front slab bracket 108 below the uncoiling wheel 10-1. A corresponding ultrasonic wave welding head 10-7 is mounted between a coiling wheel 10-5 and a flattening wheel 10-8. The present invention is suitable for automatic welding of thin film solar cell electrode with glass or flexible material as substrate, thus ensuring high precision, nice appearance and equal distance between welding spots, improving welding efficiency and eliminating rosin joint.

Description

technical field [0001] The invention discloses a welding device for thin-film solar cells, specifically an automatic ultrasonic welding device for electrode welding of amorphous silicon solar cells. Background technique [0002] At present, there are existing ultrasonic metal welding machines, such as Chinese Patent No. ZL02271879.6, which uses an ultrasonic welding head and a pressing device to weld tube-sheet solar collectors; Chinese Patent ZL99235388.2 discloses rolling ultrasonic welding; Chinese Patent No. 98106400.0 discloses ultrasonic copper Platinum welding, the above three patents basically focus on solving a specific product welding, such as the welding of metals with better mechanical properties, so ultrasonic rolling welding puts a greater pressure on the welding head and applies a higher frequency at the same time Ultrasonic welding is suitable for welding thicker metals. In the electrode welding process of amorphous silicon solar cells, ultrasonic copper-pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18B23K20/10B23K20/24
CPCY02P70/50
Inventor 李毅张滨
Owner 李毅
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