Photovoltaic bypass diode in field of thin-film solar energy, and production process and installation method of photovoltaic bypass diode

Abstract

The invention discloses a photovoltaic bypass diode in the field of thin-film solar energy, production process thereof and an installation method thereof. The invention belongs to the technical fieldof semiconductor electrical components. The diode comprises a diode cathode lead end and a diode anode lead end. A diode chip is arranged between the diode cathode lead end and the diode anode lead end, a bonding jumper wire is connected above the diode chip, the diode chip is placed on the diode cathode lead end, the diode cathode lead end is connected with the diode anode lead end through the diode chip and the bonding jumper wire, a frame chip mounting surface is arranged below the diode chip, a diode plastic package body is arranged outside the diode chip, and a back plate cooling fin is arranged at the position, corresponding to the frame chip mounting surface, of the back surface of the diode body. A photovoltaic diode and an extension lead which are separated in an original productare integrated together, and a client element welding procedure is replaced. And the heat dissipation capability of the element is remarkably enhanced in an integrated packaging mode of the element.

Description

technical field [0001] The invention relates to a photovoltaic bypass diode in the field of thin-film solar energy, a production process and an installation method thereof, and belongs to the technical field of semiconductor electrical components. Background technique [0002] Photovoltaic bypass diodes are widely used in solar power generation equipment, and are usually connected in parallel and reversely between the positive and negative electrodes of solar cell modules. Under abnormal conditions, it can protect the safety of photovoltaic power generation components, minimize power loss, and maintain the normal operation of photovoltaic power generation devices. With the development of new thin-film solar energy technology, the demand for bypass diodes for thin-film solar panels is increasing, while the existing thin-film solar energy bypass diodes such as Figure 1-3 As shown, the photovoltaic diode 16 is packaged in TO-277, and the packaged diode is combined with welding...

AI Technical Summary

Problems solved by technology

With the development of new thin-film solar energy technology, the demand for bypass diodes for thin-film solar panels is increasing, while the existing thin-film solar energy bypass diodes such as Figure 1-3 As shown, the photovoltaic diode 16 is packaged in TO-277, and the packaged diode is combined with a welding extension wire. The client needs to manually weld the extension lead for the photovoltaic diode. After welding, it is assembled with the thin film solar panel, and the process is cumbersome.

The product body is too thick, affecting customer use

The edge of the device is too sharp, it is easy to scratch the protective film on the back of the component, causing product damage

The welding effect of the discrete device and the frame will directly affect the performance of the component. The yield rate of manual welding is not high, which can no longer fully meet the needs of customers.

[0003] like Figure 4 As shown, when installing TO-277 packaged photovoltaic diodes, the installation is cumbersome - when using the original product, the customer needs to manually weld the extension leads for the photovoltaic diodes, and then assemble with the thin film solar panel after welding, the process is more cumbersome

The effect of welding the discrete device and the frame will directly affect the performance of the component, and the yield rate of manual welding is not high

The sharp corners during the installation of the components will scratch the film covering the surface of the solar panel, causing damage to the product

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