Solar cell module electrical performance test lead device

Abstract

The invention provides a solar cell module electrical performance test lead device which belongs to the field of solar cell module electrical performance testing. The device is characterized in that the device comprises a piston module and a preset module; the piston module comprises a support capable of moving back and forth along a fixed track and elastic conductive parts; the elastic conductiveparts are arranged on the bracket in a mutual insulation manner; the preset module comprises a joint and a base; a fixing device is arranged at the top of the base; a conductive contact is arranged at the bottom end of the base; and the conductive contact is electrically connected with the joint. The lead between the solar cell module and the electrical performance test device is improved. Automatic testing of an electrical performance testing process is achieved through the preset module and the piston module. The testing efficiency is remarkably improved. The labor cost is reduced, and thebad experience that an operator curls up in a narrow space for a long time is avoided. By improving the structure of a conductive core in the joint, on the basis of being compatible and matched with an MC4 series joint on a tail cable of the solar cell module, inconvenience in testing is avoided, and testing is more accurate.

Description

technical field [0001] The invention belongs to the field of testing the electrical properties of solar cell components, in particular to a lead device for testing the electrical properties of solar cell components. Background technique [0002] A solar cell is a semiconductor sheet that can generate electricity through the photovoltaic effect. One side of the sheet is the positive electrode and the other side is the negative electrode. There are conductive metal grids or metal coatings on the positive and negative electrodes to collect current and voltage; solar cell components Generally, several solar cells are packaged in series or in parallel; generally there are two tail cables, one is positive and the other is negative; most tail cables use MC4 or imitation MC4 connectors. There are two types of joints, male and female, and there is only one conductive core inside. [0003] The electrical performance test of the solar cell is to irradiate the surface of the solar cell...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the electrical performance testing process is as follows: the solar battery module is fed to a predetermined position, the tail cable connector of the solar battery module is manually connected to the lead connector of the electrical performance testing device, the electrical performance is tested, and the tail cable connector is manually pulled out, and the solar battery module is manually disconnected. Battery module discharge; each step in the above process is carried out in series, and the plugging and unplugging link takes nearly 10s, which significantly increases the time for electrical performance testing, and requires at least one person to curl up in a space less than 1m high on the backlight side of the solar cell module Inside, plugging and unplugging operations are carried out. Since the work on the production line is carried out continuously about 2,500 times a day, this seriously reduces the experience of operators and increases labor costs; and in the prior art, the end of the lead wire of the electrical performance testing device There are two male and female MC4 series connectors in each connector, and there is only one conductive core in each connector, which is responsible for the conduction of I and V electrical signals at the same time. The practice of conducting I and V electrical signals at the same time with one conductive core causes inaccurate measurement

After the solar cell generates electricity, the current starts from the positive electrode of the solar cell (the voltmeter is regarded as an open circuit), and flows into the negative electrode of the solar cell after passing through the positive electrode conductive core, the sampling resistor, the variable electronic load, and the negative electrode conductive core; There is a contact resistance between them, and there will be a voltage drop here, which will cause the measured result of the voltmeter of the solar cell to be lower than the terminal voltage of the solar cell; as the number of plugging and unplugging of the connector increases, the contact resistance of the conductive core will increase rapidly. Significant impact of solar cell electrical performance tests

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