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Battery piece welding process for photovoltaic power generation transverse connection assembly

A cell welding, photovoltaic power generation technology, applied in welding equipment, welding accessories, arc welding equipment and other directions, can solve the problems of affecting the welding effect of solar photovoltaic modules, poor cell welding effect, and inability to guarantee welding wettability, etc. Easy to promote and use, avoid welding offset or contact instability, and good welding effect

Inactive Publication Date: 2020-05-08
JETION SOLAR HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a battery sheet welding process for photovoltaic power generation cross-connection modules, so as to solve the problem that the existing battery sheets mentioned in the above background technology usually arrange the battery sheets directly, and then directly carry out welding. String welding, it is easy to cause poor welding effect of the battery sheet itself, and the battery sheet is prone to deflection during welding, which affects the welding effect of solar photovoltaic modules. Sexuality, and when some soldering flux is used for welding, the soldering effect is affected due to the unreasonable ratio of the flux

Method used

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  • Battery piece welding process for photovoltaic power generation transverse connection assembly

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Effect test

Embodiment 1

[0025] A battery sheet welding process for photovoltaic power generation cross-connection modules, comprising the following steps:

[0026] Step 1: Determine the number of cells, check whether the cells have missing corners, cracks, etc., confirm that the cells are complete, and then take a cell and place it face up;

[0027] Step 2: Select a clean interconnection strip and place it in the soaking box, then add flux, soak the interconnection strip for a period of time with the flux, when the interconnection strip is soaked, take it out and wrap it with a dust-free cotton cloth for later use, the flux has the following parts by weight Composition: 10 parts of hydrogenated rosin, 10 parts of modified epoxy resin, 2 parts of fatty acid polyoxyethylene resin, 2 parts of polyoxyethylene alkylamine, 1 part of diethylene glycol butyl ether, 1 part of ethanol, 1 part of aniline phosphate, 1 part of triethanolamine, 1 part of hydrogenated castor oil derivatives, 2 parts of additives, w...

Embodiment 2

[0033] A battery sheet welding process for photovoltaic power generation cross-connection modules, comprising the following steps:

[0034] Step 1: Determine the number of cells, check whether the cells have missing corners, cracks, etc., confirm that the cells are complete, and then take a cell and place it face up;

[0035] Step 2: Select a clean interconnection strip and place it in the soaking box, then add flux, soak the interconnection strip for a period of time with the flux, when the interconnection strip is soaked, take it out and wrap it with a dust-free cotton cloth for later use, the flux has the following parts by weight Composition: 15 parts of hydrogenated rosin, 12 parts of modified epoxy resin, 3 parts of fatty acid polyoxyethylene resin, 2.5 parts of polyoxyethylene alkylamine, 1.5 parts of diethylene glycol butyl ether, 1.5 parts of ethanol, 2 parts of aniline phosphate, 2 parts of triethanolamine, 2 parts of hydrogenated castor oil derivatives, and 3 parts ...

Embodiment 3

[0041] A battery sheet welding process for photovoltaic power generation cross-connection modules, comprising the following steps:

[0042] Step 1: Determine the number of cells, check whether the cells have missing corners, cracks, etc., confirm that the cells are complete, and then take a cell and place it face up;

[0043]Step 2: Select a clean interconnection strip and place it in the soaking box, then add flux, soak the interconnection strip for a period of time with the flux, when the interconnection strip is soaked, take it out and wrap it with a dust-free cotton cloth for later use, the flux has the following parts by weight Composition: 20 parts of hydrogenated rosin, 15 parts of modified epoxy resin, 4 parts of fatty acid polyoxyethylene resin, 3 parts of polyoxyethylene alkylamine, 2 parts of diethylene glycol butyl ether, 2 parts of ethanol, 3 parts of aniline phosphate, 3 parts of triethanolamine, 3 parts of hydrogenated castor oil derivatives, and 4 parts of addi...

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Abstract

The invention discloses a battery piece welding process for a photovoltaic power generation transverse connection assembly. The battery piece welding process comprises the following steps of 1, determining the number of battery pieces, checking whether the battery pieces have phenomena such as unfilled corners, cracking and the like, confirming that the battery pieces are complete, and taking andplacing one battery piece with the front side facing upwards; 2, pretreating interconnection strips; 3, placing one battery piece in the middle of a heating plate, and taking and laying a group of solder strips on a main grid line of the battery piece; 4, carrying out single welding on the battery pieces; 5, performing pretreatment before series welding; and 6, performing series welding on the battery pieces subjected to single welding. According to the battery piece welding process, welding is carried out on the single battery pieces, and then the multiple groups of welded battery pieces arewelded in series, so that the welding effect is good, the phenomenon of welding deviation or unstable contact caused by direct series welding can be avoided, and the welding quality is improved; and the interconnection strips are placed in a soldering flux with a reasonable proportion to be soaked, so that the wettability during welding can be improved.

Description

technical field [0001] The invention relates to the related technical field of battery sheet welding, in particular to a battery sheet welding process for a photovoltaic power generation cross-connection module. Background technique [0002] Today's world is short of energy. The development and utilization of clean energy such as solar energy has become an important project for countries around the world to use new energy. How to improve the power generation efficiency of solar cells is the focus of research and development work of major photovoltaic companies. At present, new technology solar cells, For example, PERC batteries, HIT batteries, MWT batteries, etc. have been developed and tested in various enterprises or produced in small batches. During the manufacturing process of solar photovoltaic modules, battery sheets need to be welded. [0003] When welding the existing solar cells, most of the cells are directly arranged and then directly connected in series, which is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/00B23K9/235B23K9/32B23K101/36
CPCB23K9/00B23K9/235B23K9/32B23K2101/36
Inventor 胡燕王海庆曹思远
Owner JETION SOLAR HLDG
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