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Welding method of photovoltaic assembly junction box

A welding method and technology of photovoltaic modules, applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problems of easy occurrence of false welding and hidden safety hazards, so as to improve welding firmness and reduce false welding chance, the effect of reducing the chance of false welding

Pending Publication Date: 2019-04-16
HEFEI & SOLAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the bus bars used in this field are generally flat strips with flat surfaces, and the surface is plated with metal tin. During the welding process, the two planes of the pad surface and the bus bar surface are welded together by hot tin welding. This method of welding two planes together is prone to false welding, burying potential safety hazards

Method used

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  • Welding method of photovoltaic assembly junction box
  • Welding method of photovoltaic assembly junction box
  • Welding method of photovoltaic assembly junction box

Examples

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Embodiment

[0022] The invention provides a welding method for a junction box of a photovoltaic module, the welding method comprising the following steps:

[0023] Step S1, providing a bus bar 1 with a through hole 2 and a junction box pad 3 with a columnar protrusion 4;

[0024] Step S2, insert the columnar protrusion 4 into the through hole 2 on the bus bar 1, heat the solder on the surface of the bus bar 1 to melt, and make the melted solder enter between the through hole 2 of the bus bar 1 and the columnar protrusion 4, The molten solder is then allowed to condense.

[0025] The bus bar is a metal connector that collects the current of the battery string in the photovoltaic module and connects it to the junction box of the module. There is a layer of solder (that is, solder made of tin-based alloy) on the surface of the bus bar. After the solder is heated to a certain temperature, it can molten.

[0026] In the welding method provided by the present invention, the columnar protrusio...

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Abstract

The invention discloses a welding method of a photovoltaic assembly junction box. The welding method comprises the steps that a bus bar with a penetrating through hole and a junction box welding discwith a cylindrical protrusion are provided; and the cylindrical protrusion is inserted into the through hole in the bus bar, heating is conducted to enable soldering tin on the surface of the bus barto be molten, the molten soldering tin enters the through hole of the bus bar, and then the molten soldering tin is condensed. In the welding process of the photovoltaic assembly junction box, the cylindrical protrusion on the surface of the welding disc is completely inserted into the through hole of the bus bar, assembly pseudo soldering caused by relative moving of the bus bar and the welding disc in the welding process of the junction box is avoided, the probability of pseudo soldering can be effectively decreased, welding firmness is improved, and thus the safety and stability of a photovoltaic power station are improved.

Description

technical field [0001] The invention belongs to the field of solar photovoltaic components, and in particular relates to a welding method for a junction box of a photovoltaic component. Background technique [0002] With the rapid development of the photovoltaic module industry, its application is becoming more and more common, and more and more photovoltaic modules are installed on the roof. Common photovoltaic modules include photovoltaic junction boxes. The photovoltaic junction box is an important part used to realize the connection between the photovoltaic module and the outside. It plays an important role in the output of the photovoltaic module current and the protection of the bypass. The existing photovoltaic junction box usually has pads, and the pads are soldered. Connect together with busbars for electrical conduction. [0003] At present, the bus bars used in this field are generally flat strips with flat surfaces, and the surface is plated with metal tin. Dur...

Claims

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Application Information

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IPC IPC(8): B23K1/00B23K3/08B23K37/04
CPCB23K1/0008B23K3/087
Inventor 徐建周亮王静
Owner HEFEI & SOLAR TECH
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