Connecting box for solar photovoltaic module

Abstract

The invention discloses a connecting box for a solar photovoltaic module, and belongs to the technical field of solar cell modules. The connecting box comprises a box body, a protecting mechanism and a box cover, a suspended cavity is formed in the box body, the protecting mechanism is arranged in a protecting mechanism cavity of the box body, the box cover is used for fittingly covering the box body, and the protecting mechanism comprises a group of electric connecting plates, a group of bypass diodes, an upper radiating plate and a lower radiating plate. The connecting box is characterized in that the protecting mechanism further comprises a module support, the electric connecting plates are combined on the side of the module support facing the protecting mechanism cavity and arrayed along the length direction of the side of the module support at intervals, each bypass electrode in the group of bypass diodes in a module support cavity of the module support is connected with the corresponding two adjacent electric connecting plates, the upper radiating plate fittingly covers the side of the module support facing the box cover, the lower radiating plate fittingly covers the side of the module support facing the protecting mechanism cavity, and the module support cavity is sheltered by mutual matching of the upper radiating plate and the lower radiating plate. The connecting box for the solar photovoltaic module has the advantages that application requirements on the high-power bypass diodes are met, the connecting box is convenient to manufacture and quick in assembly, and requirements on industrial large-scale production can be met.

Description

technical field [0001] The invention belongs to the technical field of solar cell components, and in particular relates to a junction box for solar photovoltaic components. Background technique [0002] The junction box of the solar photovoltaic module is bonded to the back plate of the solar module through silica gel or similar adhesives, and is between the solar cell module and the solar charging device. It is an important part for outputting solar power, including the junction box body, equipment Bypass diodes, wires and cables and cable connectors in the box. [0003] The function of the aforementioned bypass diode is to prevent reverse charging from damaging the solar photovoltaic cell and prevent the entire solar photovoltaic cell assembly from malfunctioning due to a short circuit of one solar photovoltaic cell. In the process of solar photovoltaic power generation, the current flowing through the bypass diode will cause it to generate heat, so the junction box shoul...

AI Technical Summary

Problems solved by technology

[0007] It should be said that the above-mentioned CN101944546B can objectively embody the technical effect described in paragraph 0019 of its specification, but there are still the following two shortcomings: first, it is difficult to meet the requirements for power increase The heat dissipation requirements of large bypass diodes, because the electrical connection sheet only transfers heat to the heat sink through the limited contact with the additional heat sink, and the remaining area of ​​the electrical connection sheet is the rest (the rest refers to the contact with the heat sink non-contact part) because the heat generated by the bypass diode cannot be transferred to the outside in a timely and rapid manner, so it can only be directly transferred to the box itself; The protective mechanism does not have a modular effect or a modular trend, so it is troublesome to manufacture or assemble, and it affects industrial scale-up production due to low installation efficiency. The corresponding parts of the sheet and the heat sink are provided with screw holes, and the screws (patent called electric connection plate fixing screws) are used to fix the connection between the electric connection sheet and the heat sink during assembly.

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