An online defect detection device for silicon solar cells

Abstract

The invention discloses a silicon solar cell defect on-line detection device, comprising a first transmission mechanism, a second transmission mechanism, a detection camera obscura, a camera, a DC source and a reflective mirror. Through the first transmission mechanism, a silicon solar cell is transmitted to the detection camera obscura; the DC source in the detection camera obscura loads a certain forward bias voltage for the silicon solar cell; according to the electroluminescent principle, the camera shoots the near infrared image of the silicon solar cell in the reflective mirror, and sends the image to a computer to perform subsequent image processing and defect detection operation; the second transmission structure transmits the silicon solar to a production line from the detection camera obscura. The silicon solar cell defect on-line detection device has the characteristics of simple structure, and high imaging quality, can rapidly and accurately identify effects of the silicon solar cell, reduce silicon material consumption, control production cost, and effectively improve silicon solar cell production monitoring, and defect detection automation and intelligence.

Description

Technical field: [0001] The invention belongs to the technical field of solar cells, and in particular relates to an online defect detection device for silicon solar cells. Background technique: [0002] Since the 21st century, the world economy has developed by leaps and bounds, and the excessive energy consumption and environmental degradation brought about by economic development have become the primary problems to be solved urgently in today's society. my country is a big economy, but also a country that consumes the most energy. The energy currently used is mainly conventional energy such as coal, oil, and natural gas, and the utilization rate of these energy sources is not high. The non-renewability of conventional energy and the use of The damage to the environment will inevitably lead to problems such as excessive waste of resources and deterioration of the environment. As an inexhaustible renewable green energy, solar energy has been widely valued by various countri...

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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is that the detection equipment and methods used for silicon solar cells in the prior art have inconsistent defect indicators, are not suitable for large-scale industrial production requirements, have relatively large detection limitations, low defect detection accuracy, and The effect is poor, so an online defect detection device for silicon solar cells is proposed

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