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Composite soldering strip

A composite and welding ribbon technology, applied in photovoltaic power generation, electrical components, circuits, etc., can solve problems such as broken, lower product yield, and hazards, reduce bending deformation and broken, improve quality stability, and reduce environmental damage Harmful effect

Pending Publication Date: 2017-09-08
SUZHOU YOURBEST NEW TYPE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solder strips on the market are mainly tin-coated solder strips. Tin-coated solder strips are coated with a layer of tin-lead alloy on the outer surface of the copper substrate. Among them, lead is a toxic heavy metal that is extremely harmful to the human body. Lead and its compounds enter The body will cause harm to important human systems such as nerves, hematopoiesis, digestion, kidneys, cardiovascular and endocrine, and seriously threaten the health of workers
The battery sheet and the ribbon are heated and welded by a stringer. Usually, the welding temperature of the battery sheet and the tinned ribbon is above 230 degrees. The welding temperature is high, and the thermal stress generated will cause the battery sheet to bend and break, reducing the product yield. , affecting the quality stability of photovoltaic products

Method used

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] In order to achieve the purpose of the present invention, such as figure 1 As shown, one embodiment of the present invention is: a composite welding tape, comprising a base material 1, an interconnecting paste layer 2 covering the surface of the base material 1, and the interconnecting paste layer 2 is composed of silver powder, an adhesive phase and a solvent combined.

[0034] The beneficial effects of the invention are as f...

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Abstract

The invention provides a composite soldering strip. The composite soldering strip comprises a substrate and an interconnected paste layer covering the surface of the substrate, and the interconnected paste layer is formed by combination of silver powder, bonding phase, and solvent. According to the composite soldering strip, compared with the prior art, the composite soldering strip and a cell can be directly welded so that the usage of silver paste on the cell is cancelled, and the cost of the cell is reduced; the usage of a tin-lead solder is replaced by the interconnected paste so that the harm to the environment is reduced; and by employing the interconnected paste, the welding temperature can be effectively reduced, bending deformation and fragmentation of the cells brought by thermal stress are reduced, and the quality stability of a photovoltaic module is improved.

Description

technical field [0001] The invention relates to a welding tape for photovoltaic modules, in particular to a composite welding tape. Background technique [0002] At present, the cells in photovoltaic modules are mainly connected by solder ribbons. In the market, the soldering strips are mainly tin-coated soldering strips. The tin-coated soldering strips are coated with a layer of tin-lead alloy on the outer surface of the copper base material. Lead is a toxic heavy metal that is extremely harmful to the human body. In the body, it will cause harm to important systems of the human body such as nerves, hematopoiesis, digestion, kidneys, cardiovascular and endocrine, and seriously threaten the health of workers. The battery and the ribbon are heated and welded by a stringer. Usually, the welding temperature of the battery and the tin-coated ribbon is above 230 degrees. The welding temperature is high, and the thermal stress generated will cause the battery to bend and break, r...

Claims

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Application Information

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IPC IPC(8): H01L31/05
CPCH01L31/05Y02E10/50
Inventor 肖锋朱骄峰王兴
Owner SUZHOU YOURBEST NEW TYPE MATERIALS
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