Fully glued photovoltaic junction box with ventilation on three sides of the bottom and internal diodes inverted and suspended

Abstract

The invention relates to an all-glue-pouring photovoltaic connecting box with a three-side ventilation bottom and an inverted and suspended internal diode. The all-glue-pouring photovoltaic connecting box comprises an upper cover (1), a shell (2), a metal conductor (3) and a diode (4). The diode (4) is installed at the back surface of the metal conductor (3). An accommodating cavity (5) capable of accommodating the metal conductor (3) and the diode (4) is formed in the shell (2). The metal conductor (3) is installed on a positioning column (6) arranged at the baseplate of the accommodating cavity (5). The baseplate of the accommodating cavity (5) arranged exactly below the diode (4) is provided with a sink groove (7). A heat-radiating channel (8) of which the three sides surround the sink groove (7) is formed at the back surface of the shell (2). A ventilation opening (9) communicated with the heat-radiating channel (8) is arranged between the baseplate and the two side plates and the lower plate of the accommodating cavity (5). According to the connecting box, the heat radiation efficiency of the connecting box can be greatly enhanced and burnout and failure of the backboard of a photovoltaic component caused by high temperature can be avoided.

Description

technical field [0001] The invention relates to a junction box, in particular to a fully glue-filled photovoltaic junction box used in the field of solar energy with ventilation on three sides of the bottom and internal diodes inverted and suspended. It belongs to the field of photovoltaic technology. Background technique [0002] At present, in the electrical connection technology of solar power generation systems, solar photovoltaic cell junction boxes are usually used to realize the electrical connection between photovoltaic modules and inverters. The photovoltaic junction box is bonded to the backplane through silica gel. When working, the diode will generate a lot of heat. At present, the bottom area of ​​the conventional photovoltaic cell junction box is in direct contact with the backplane of the photovoltaic module. invalidated. [0003] In addition, the junction box of conventional photovoltaic cells is sealed waterproof and conducts heat through the sealant in th...

AI Technical Summary

Problems solved by technology

[0004] 1. Only the upper part of the diode and metal conductor has sealant, and there is still the possibility of rainwater infiltration at the bottom, which will affect the electrical performance of the junction box

[0005] 2. The conductor directly contacts the box body. When the diode works and heats up, it cannot dissipate heat through the sealant, resulting in deformation of the box body. The heat dissipation performance of the junction box will be greatly affected, and ultimately affect the life and performance of the entire junction box

Images