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Two-stage welding type ibc solar cell string welding device and welding method thereof

A technology for solar cells and welding devices, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as difficulty in automatic welding, and achieve the effects of avoiding welding dead spots, improving yield, and avoiding displacement.

Active Publication Date: 2021-06-08
HANGZHOU COMFIRMWARE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the technical defect that IBC solar cell strings are difficult to be automatically welded in the prior art, and provide a two-stage welding type IBC solar cell string welding device and its welding method

Method used

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  • Two-stage welding type ibc solar cell string welding device and welding method thereof
  • Two-stage welding type ibc solar cell string welding device and welding method thereof
  • Two-stage welding type ibc solar cell string welding device and welding method thereof

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Embodiment Construction

[0074] The present invention will be further described below in conjunction with accompanying drawing.

[0075] Such as figure 1 As shown, the present invention is used to produce "IBC solar cell strings". The structure of the IBC solar cell string is as follows figure 1 As shown, it includes six or twelve cells A and multiple welding ribbons B (when six cells are connected to form a battery string, the cells used are full-piece cells; twelve cells are connected to form a battery string , the cells used are half-cell cells). Each battery sheet A is arranged at equal intervals in turn. Two adjacent cells A are connected by a set of ribbons B. There are four welding ribbons B in one set, and they are arranged along the direction vertical to the arrangement of battery sheets. The two ends of the four welding ribbons B respectively cover the opposite edges of the two adjacent battery sheets A. Adjacent two groups of soldering strips are staggered; therefore, any battery shee...

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Abstract

The invention discloses a two-stage welding type IBC solar cell series welding device and a welding method thereof. Compared with the conventional stringer using the last cell to fix the position of the metal wire, the IBC battery cannot do this, and needs to use the clamp to cover and fix it. The invention includes a light welding module, a final welding module, a battery string transfer module, a light welding base and a final welding base. The optical welding module includes a ribbon feeding device, a ribbon transfer device, an optical soldering device, a jig reflow device, a third battery conveyor, a jig conveyor, and a press positioning jig. The final welding module includes a final welding base, a final welding conveyor, a final welding push-up device and six pressure welding devices. The final welding push-up device includes a push-up frame and a push-up electric cylinder. The invention firstly welds the battery sheet and the ribbon through the optical welding module, and then reliably welds the battery sheet and the ribbon through the final welding module; this makes the invention realize the full production of the battery sheet under the premise of hardly affecting the quality of the battery sheet automation.

Description

technical field [0001] The invention belongs to the technical field of solar cell production equipment, and in particular relates to a two-stage welding type IBC solar cell string welding device and a welding method thereof. Background technique [0002] IBC battery (full back electrode contact crystalline silicon photovoltaic cell) is a technology that moves both the positive and negative metal contacts to the back of the cell, so that the front of the cell facing the sun is completely black, and the front of most photovoltaic cells is completely invisible. metal wire. This not only brings more effective power generation area to users, but also helps to improve power generation efficiency, and the appearance is also more beautiful. The biggest feature of the IBC battery is that the PN junction and metal contact are on the back of the battery, and the front is not affected by the shielding of the metal electrode, so it has a higher short-circuit current Jsc, and the back ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L21/677H01L21/68
CPCH01L21/67703H01L21/68H01L31/188Y02E10/50Y02P70/50
Inventor 李福军王俊蒋宇黄兆威温永乐戴龙君崔小祥李波余凯
Owner HANGZHOU COMFIRMWARE TECH CO LTD
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