Photovoltaic back membrane resistance testing instrument

Abstract

The invention discloses a photovoltaic back membrane resistance testing instrument. The testing instrument comprises a resistance surface box, terminals and a connecting mechanism, wherein the terminals comprise a front face negative electrode terminal and a front face positive electrode terminal which are in contact with the front face of a photovoltaic assembly and back face positive electrode terminal and a back face negative electrode terminal which are in contact with the back face of the photovoltaic assembly, the terminals are connected with the resistance surface box through guiding wires, the connecting mechanism is movably connected with and mutually insulated from the front face positive and negative electrodes and is movably connected with and mutually insulated from the back face positive and negative electrodes, the connecting mechanism fixedly fits the photovoltaic assembly through suction plates, the suction plates comprises an upper suction plate and a lower suction plate, the upper suction plate is connected with the front face negative and positive electrode terminals through two extending arms, and the lower suction plate is connected with the back face positiveand negative electrode terminals through two extending arms. By means of the testing instrument, the insulation performance between the two faces of the photovoltaic assembly can be detected, the insulation performance between the faces on the same side can be detected, and local detection can be conducted on the photovoltaic assembly at will, and the accuracy is high.

Description

technical field [0001] The invention relates to the field of photovoltaic detection equipment, in particular to a photovoltaic back film resistance tester. Background technique [0002] The back film of the photovoltaic module is also called the back sheet. The function of the back sheet is to encapsulate the module, and it seals and protects the battery cells of the module. At the same time, the backplane must have insulating properties. Usually, the backplane color is white, black or even blue and red. Generally speaking, the original color of the backplane is white, but in order to achieve colored effects such as black, it is necessary to add "carbon element" to the original color backplane to achieve black. The amount of "carbon element" determines the insulation of colored backplanes such as black. After the backplane is made, there is also testing equipment for the insulation value of the backplane, but the current insulation tester for the backplane production line ...

AI Technical Summary

Problems solved by technology

Therefore, when there is a problem with the insulation of the coating layer, the insulation characteristics of the PET layer in the middle structure of the limited backplane cannot be fully and accurately tested by traditional testing methods.

Images