Photovoltaic module junction box with high heat dissipation performance

Abstract

The invention provides a photovoltaic module junction box with high heat dissipation performance. The junction box comprises a junction box body and electrical connecting wires, wherein a plurality of connection terminals connected with a photovoltaic module bus bar are arranged in the box body in sequence, the connection terminals comprise the first connection terminal, the second connection terminal, the third connection terminal and the fourth connection terminal, the second connection terminal, the third connection terminal and the fourth connection terminal are provided with SMD type diodes, the diodes are electrically connected with the adjacent connection terminals, the polarity is kept consistent after connection, and the plane area of the connection terminals arranged in the middle of the junction box is larger than that of the connection terminals located on the two sides of the junction box. According to the photovoltaic module junction box with high the heat dissipation performance, the connection terminals in different positions are designed to be in different sizes and different structures according to the distribution condition of the diodes in the junction box, and therefore heat dissipation in the junction box is efficient and uniform, local high temperature is avoided, and the service life of the junction box is guaranteed.

Description

technical field [0001] The invention relates to the field of solar photovoltaic technology, in particular to a junction box of a photovoltaic module with high-efficiency heat dissipation performance. Background technique [0002] With global climate change and increasingly serious environmental pollution problems, the green and renewable energy industry has developed rapidly in the past ten years. Solar energy is a renewable resource, and the solar cell technology that uses the photovoltaic effect to generate electricity has attracted worldwide attention. Solar cells are made of materials that can produce photovoltaic effects, such as silicon, gallium arsenide, indium selenide copper and other materials, which can convert light energy into electrical energy. At present, photovoltaic modules composed of multiple solar cells are widely used to build various photovoltaic power generation systems, or used as building curtain walls to build energy-saving and environment-friendly...

AI Technical Summary

Problems solved by technology

In the previous junction boxes, axial diodes were generally used, and the cost was relatively cheap, but the heat dissipation effect was not good and the allowable current was generally relatively small. Nowadays, chip diodes are generally used, which have good heat dissipation and can allow large currents. pass

For the heat dissipation inside the junction box, it is necessary not only to dissipate heat quickly, but also to make the heat dissipation inside the junction box more uniform, so that local high temperature cannot appear, otherwise it will eventually cause thermal deformation of the entire junction box and affect its service life

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