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Field test method for solar cell temperature coefficient

A solar cell, temperature coefficient technology, applied in the direction of semiconductor/solid-state device testing/measurement, can solve the problems of high price, long time, loss of calibration meaning, etc., to solve the temperature coefficient mismatch, good correction, and simple implementation process Effect

Active Publication Date: 2019-05-07
YANCHENG CANADIAN SOLAR INC +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But at present, the determination of the temperature coefficient of solar cells in the industry can only be calibrated by a third-party testing agency. This process is time-consuming and expensive. match, thus losing the meaning of calibration

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] The on-site testing method for the temperature coefficient of the solar cells provided by the present invention includes: a step of zeroing the temperature coefficient of the machine, a step of heating the cells, a step of data collection, a step of linear fitting and slope acquisition, and a step of calculating the temperature coefficient.

[0026] Wherein, the step of returning the temperature coefficient of the machine to zero in the present invention...

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Abstract

The invention discloses a field test method for a solar cell temperature coefficient. The method comprises the steps of: measuring electrical performance data of several solar cells at different temperatures through an I-V test machine, and combining a least square method for liner fitting to calculate and obtain an open circuit voltage temperature coefficient and a short circuit current temperature coefficient of the solar cell piece to achieve a simple and rapid implementation process with no need for external addition of the temperature coefficient calibration cost, correct the electrical performance test result of the solar cell piece and effectively solve the temperature coefficient mismatch problem due to the field process change.

Description

technical field [0001] The invention relates to the field of solar battery testing, in particular to a field testing method for the temperature coefficient of a solar battery sheet. Background technique [0002] With the continuous development of the world economy, the demand for energy is increasing, non-renewable energy is facing exhaustion, and the pollution degree of non-renewable resources is very high, which has a great impact on the environment. Therefore, various types of new Energy development has become a top priority for governments of all countries. Solar energy is favored by researchers in the field of new energy due to its advantages of cleanness, safety, low utilization cost, and no geographical constraints. Among them, solar cells, as a key component of solar energy utilization, have also gained rapid development in recent years. development of. [0003] During the production process of battery cells on the production line, it is necessary to classify them ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L21/66
Inventor 朱兰兰费正洪
Owner YANCHENG CANADIAN SOLAR INC