{"id":5917,"date":"2023-05-12T15:28:06","date_gmt":"2023-05-12T07:28:06","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=5917"},"modified":"2023-09-01T14:02:43","modified_gmt":"2023-09-01T06:02:43","slug":"ele5783","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/ele5783\/","title":{"rendered":"The influence of photovoltaic ribbon on the performance of photovoltaic modules"},"content":{"rendered":"

1. Photovoltaic welding ribbon<\/a>rightSolar Photovoltaic<\/a>Component performance impact<\/p>\n

Photovoltaic ribbon is the mainstream of everySolar Cells<\/a>An important part of the panel. It is used to connect the solar cells and provide connections to the junction box. Photovoltaic ribbon isTinned copper strip<\/a>, 1-6mm wide, 0.08-0.5mm thick, with a 10-30um thick flux coating.<\/p>\n

1- Photovoltaic welding ribbon also known as tinned copper ribbon<\/p>\n

Photovoltaic ribbon is used on photovoltaic modules in two forms: interconnecting strips or busbars andPhotovoltaic busbar<\/a>.<\/p>\n

2- Application of photovoltaic welding ribbon in solar panels<\/p>\n

In a typical silicon solar cell, both are needed. The interconnects are actually soldered to the silicon crystals, connecting the solar cells in the solar panel to each other. The interconnects carry the current generated by the solar cells to the photovoltaic busbars, which are hot-dip tinned copper conductors installed around the perimeter of the solar panel and connect the interconnects to the junction box. Thin-film solar panels generally only require one busbar.<\/p>\n

Photovoltaic ribbon is a key component in solar panels. It is an important factor in improving the efficiency and durability of solar panels. High efficiency and durability of solar panels can only be achieved by using high-quality photovoltaic ribbons that are properly installed in solar panels. The quality of photovoltaic ribbons and their welding to solar cells is an important factor in ensuring the efficiency and durability of solar panels.<\/p>\n

3-Photovoltaic ribbon is a key component in solar panels.<\/p>\n

A. Currently, the soldering ribbons on the market are divided into silver-containing soldering ribbons and silver-free soldering ribbons.<\/p>\n

Among them, silver-containing solder strips are expensive, but they also have their own advantages:<\/p>\n

1) Increase the metallurgical bond between the solder and the metal being welded. The mechanical strength and electrical conductivity after welding will be better.<\/p>\n

2) After adding silver, the melting point of the ternary alloy is lower than that of the binary alloy, and its weldability and fluidity are improved.<\/p>\n

3) The resistivity will decrease and the ability to withstand high temperatures will increase.<\/p>\n

B. The resistance of a photovoltaic ribbon is primarily determined by the size of the ribbon itself and the material of the copper substrate.<\/p>\n

The composition of the surface tin layer has little effect on the resistance of the strip.<\/p>\n

Increasing the width or thickness of the PV ribbon can reduce the resistance of the ribbon. This improvement is equally effective for traditional soldering methods and newer low-temperature connections such as conductive silver glue or conductive ribbon connections. However, PV ribbons that are wider than the width of the front electrode will block the incident light and cause current loss. We recommend using thicker ribbons without affecting the fragmentation rate.<\/p>\n

C. The portion of the solar cell covered by the photovoltaic ribbon cannot absorb sunlight.<\/p>\n

Some companies have introduced light-reflecting tape. Its front side is silver-plated and has a longitudinal groove structure embossed into it. This structure reflects the light incident on the tape to the inner surface of the module glass layer at a certain angle and projects it to the cell surface after total reflection at the glass-air interface. The captured light enables the module to produce additional increased power. In theory, it can increase the efficiency of the module by about 2%.<\/p>\n

2. Common specifications of photovoltaic ribbons<\/p>\n

The following areRaytron<\/a>Some common specifications provided to customers. They are popular in the current market.<\/p>\n

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In addition, the mainstream cell sizes on the market now include 166, 182, 210, etc. The size of the photovoltaic welding ribbon is also related to the size of the cell of the module.<\/p>\n

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