1) junction boxes are used to connect the battery square and charge control devices. As a consequence, exposure to outdoor conditions requires the effect of various environmental changes. In addition, the electronic components of the junction box generate heat, so that there is a great pressure difference inside and outside the junction box. The influence of weather will aggravate the change of pressure difference inside and outside. Therefore, it is necessary to communicate with the atmosphere to balance the internal and external pressure differential, so as to prevent the performance of the internal electronic components and the sealing performance of the junction boxes. At the same time, it is necessary to block solid and liquid pollutants from water and dust in the external environment.
Pu designed specifically for the solar energy industry, PU waterproof breathable film products, in maintaining the junction box pressure balance inside and outside at the same time, you can obstruct the outside liquid and solid pollutants. Thus, the failure of the junction box can be reduced and the life of the junction box can be prolonged, thereby reducing the overall operation cost of the solar energy system.
2)
With the decline of the component market price and the convenience of component installation, new requirements have been put forward for the photovoltaic junction boxes. Wuhan fortune to keep pace with the times, continuous upgrading of products, supply the needs of our customers
1. photovoltaic junction box requires insert instead of welding (solder).
2., the size of the photovoltaic junction box tends to shrink, directly reflected in the junction box height requirements of not more than 20cm.
3., with the power of components tend to be bigger, the rated current requirements for junction boxes are also increasing, and the number of photovoltaic junction boxes for rated telephone 15A will be more and more.
4., with the photovoltaic market more and more standardized, this requires the junction box using a high rated current diode, rather than using two diodes parallel way to reflect the need to meet the high rated current.