Photovoltaic module wiring box structure and mounting method

Abstract

The invention discloses a photovoltaic module wiring box structure including a box body, a first boss, a second boss, a third boss and cable leading-out wire connectors. The two cable leading-out wireconnectors are arranged on the upper end of the box body at a specific distance. The upper end of the box body is provided with the first boss, the second boss and the third boss. The protruding faces of the first boss, the second boss and the third boss are higher than bottom parts. Two corresponding slopes of the first boss and the third boss form a horn mouth. The first boss, the second boss and the third boss are connected with the wiring box integrally in design and manufacture and are made in a single process through injection molding technique. In another embodiment, the first boss, the second boss and the third boss are added externally and the material of the added part is not limited to PPO adopted for the wiring box. According to the invention, air ventilation is facilitated and a heat dissipation function is enhanced; influence on battery piece power attenuation due to heat of the wiring box itself can be reduced effectively and power generation volume can be increased.

Description

technical field [0001] The invention relates to a large application range of hundreds of millions of photovoltaic module products, in particular to a photovoltaic module junction box structure and installation method. Background technique [0002] The junction box is an essential and important part of the photovoltaic module. The main functions of the junction box on the module are: 1. As a relay point for the power output generated by the module, it ensures the reliability of the positive and negative electrode contact output of the module. 2. The nominal value of DC current output by photovoltaic modules is 9 amperes (or greater), but in high altitude areas and under strong sunlight in spring and summer, there is even a current of more than 12 amperes. Therefore, the junction box must ensure its safety and reliability when outputting electricity, and must not generate electric sparks due to poor contact. 3. There are three bypass diodes built into the junction box. When ...

AI Technical Summary

Problems solved by technology

[0009] Fifth, severe hot spots indicate that the temperature of the junction box rises sharply. When the temperature reaches a certain critical value, an open flame is generated, causing the junction box to burn out

What's more serious is that the open flame will burn and spread along the lead wires of the junction box until the photovoltaic power station is completely destroyed

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