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A kind of LED lamp made of aluminum foil circuit board and preparation method thereof

A technology of circuit board production and LED lamps, which is applied in the direction of manufacturing tools, welding equipment, metal processing equipment, etc., can solve the problems of galvanic corrosion of solder joints, and achieve good corrosion resistance, environmental protection, and good metal solderability.

Active Publication Date: 2022-04-26
深圳市铝鑫荣科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the purposes of the present invention is to provide an LED lamp made of aluminum foil circuit boards, which is low in cost, light in weight, fast in heat conduction, and environmentally friendly, and solves the problem of solder joint electrification at the same time. Corrosion Technical Issues

Method used

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  • A kind of LED lamp made of aluminum foil circuit board and preparation method thereof
  • A kind of LED lamp made of aluminum foil circuit board and preparation method thereof
  • A kind of LED lamp made of aluminum foil circuit board and preparation method thereof

Examples

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Effect test

Embodiment 1

[0036] An LED lamp made of an aluminum foil circuit board, comprising a circuit board substrate 1, the circuit board substrate 1 carrying an aluminum foil circuit 2, the aluminum foil circuit 2 is provided with a solder resist layer 3 and a reserved welding area 4, The welding area 4 is coated with brazing paste without galvanic corrosion, and the LED lamp 5 is welded on the reserved welding area through the brazing paste without galvanic corrosion, and the brazing paste without galvanic corrosion is made of Each component composition of following weight percent:

[0037] 70% solder powder, 30% solder paste, wherein, the solder paste is composed of the following components in mass percentage: 70% triethanolamine; 20% oleic acid amide; 10% triethanolamine borate, the solder paste The solder powder is lead-containing alloy solder powder, and the lead-containing alloy solder powder is composed of the following components in weight percentage: 90% lead, 9% bismuth, and 1% silver. ...

Embodiment 2

[0039] An LED lamp made of an aluminum foil circuit board, comprising a circuit board substrate 1, the circuit board substrate 1 carrying an aluminum foil circuit 2, the aluminum foil circuit 2 is provided with a solder resist layer 3 and a reserved welding area 4, The welding area 4 is coated with brazing paste without galvanic corrosion, and the LED lamp 5 is welded on the reserved welding area through the brazing paste without galvanic corrosion, and the brazing paste without galvanic corrosion is made of Each component composition of following weight percent:

[0040] 90% solder powder, 10% solder paste, wherein, the solder paste is composed of the following components in mass percentage: 95% triethanolamine; 4% oleic acid amide; 1% triethanolamine borate, the solder paste The solder powder is lead-containing alloy solder powder, and the lead-containing alloy solder powder is composed of the following components in weight percentage: 30% lead, 69% bismuth, and 1% silver. ...

Embodiment 3

[0042] An LED lamp made of an aluminum foil circuit board, comprising a circuit board substrate 1, the circuit board substrate 1 carrying an aluminum foil circuit 2, the aluminum foil circuit 2 is provided with a solder resist layer 3 and a reserved welding area 4, The welding area 4 is coated with brazing paste without galvanic corrosion, and the LED lamp 5 is welded on the reserved welding area through the brazing paste without galvanic corrosion, and the brazing paste without galvanic corrosion is made of Each component composition of following weight percent:

[0043]80% solder powder, 20% solder paste, wherein, the solder paste is composed of the following components in mass percentage: 80% triethanolamine; 19.8% oleic acid amide; 0.2% triethanolamine borate, the solder paste The solder powder is lead-containing alloy solder powder, and the lead-containing alloy solder powder is composed of the following components in weight percentage: 70% lead, 25% bismuth, and 5% silve...

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Abstract

An LED lamp made of an aluminum foil circuit board, including a circuit board substrate, on which an aluminum foil circuit is carried, a solder resist layer and a reserved welding area are arranged on the aluminum foil circuit, and the welding area is coated with non-galvanic corrosion Brazing paste, the LED lamp is welded on the reserved welding area through the brazing paste without galvanic corrosion, and the metal alloy forms lead, bismuth, silver, aluminum intermetallic compounds or indium, bismuth, silver, and aluminum during the welding process. Aluminum intermetallic compounds, the electrode potential difference between the two intermetallic compounds and aluminum is extremely small, the solder joints formed after welding will not undergo galvanic corrosion in the air, and the strength of the solder joints can be maintained for a long time, the lowest at present Maintaining for more than 5 years greatly improves the strength and service life of aluminum-aluminum and dissimilar metal welding joints, and is low in cost, light in weight, fast in heat conduction, and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of LED lamps and technology thereof, in particular to an LED lamp made of an aluminum foil circuit board and a preparation method thereof. Background technique [0002] The circuits of the existing LED lamp circuit boards are made of copper, which is high in cost, heavy in quality, and slow in heat conduction. The welding area of ​​the circuit board made of copper can be continuously oxidized in the air at room temperature and needs to be protected by electroplating. Therefore, the industry has always wanted to use aluminum foil instead of copper foil to make circuits. [0003] However, the problem of aluminum welding has become a major problem in the development of the industry. The difficulty lies in the fact that aluminum naturally forms a layer of aluminum oxide film (Al 2 o 3 ), this layer of film will seriously hinder its welding performance. In the production field of aluminum products, the traditio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00B23K35/26B23K35/40B23K35/24F21K9/90
CPCB23K1/0008B23K35/268B23K35/40B23K35/24F21K9/90
Inventor 杨小荣
Owner 深圳市铝鑫荣科技有限公司
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