Transient photoelectric testing device of solar cell

A solar cell and photoelectric testing technology, applied in the monitoring of photovoltaic systems, electrical components, photovoltaic modules, etc., can solve problems such as difficult to achieve perturbation transient detection, complicated maintenance, high cost of solid-state lasers, etc.

Pending Publication Date: 2022-08-09
ZHEJIANG BEYONDSUN PV
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Problems solved by technology

In the above patents, a fixed laser is used to detect solar cells, but solid-state lasers are expensive and complicated to maintain, and are not suitable for large-scale industrial production applications. The output power of solid-state lasers is extremely high, and its transient process is sufficient to saturate solar cells. Excitation state, difficult to achieve perturbation transient detection

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  • Transient photoelectric testing device of solar cell
  • Transient photoelectric testing device of solar cell
  • Transient photoelectric testing device of solar cell

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Embodiment Construction

[0025] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. It should be noted that, the embodiments in the present application and the features in the embodiments may be arbitrarily combined with each other if there is no conflict.

[0026] see Figure 1-5 . A transient photoelectric test device for a solar cell according to an embodiment of the present invention excites the transient dynam...

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Abstract

The invention provides a transient photoelectric testing device of a solar cell, and belongs to the technical field of photoelectric performance testing of the solar cell. The transient photoelectric testing device of the solar cell comprises a stabilized voltage supply, a light source system and a measuring circuit module. The semiconductor laser emits transient pulse light towards the solar cell after the solar cell generates photovoltage, so that transient excitation is performed on the solar cell, the solar cell is excited to provide perturbation signals, excited carriers in the solar cell can provide transient photovoltage to the outside in the transient process, and the transient pulse light is generated. The measuring circuit module is used for detecting time-varying signals of photovoltage and photocurrent excited at the two ends of the solar cell, so that the measuring circuit module measures open-circuit voltage and short-circuit current of the solar cell respectively; and carrier dynamics and ion migration measurement of the solar cell under different steady-state illumination conditions can be realized.

Description

technical field [0001] The invention relates to the technical field of photoelectric performance testing of solar cells, in particular to a transient photoelectric testing device for solar cells. Background technique [0002] Solar cells are the main body in the development of new energy in my country, so the photoelectric conversion efficiency of solar cells directly determines their power generation capacity. The effect of ion migration in the battery is becoming more and more pronounced. Current detection techniques lack the means to directly test ion mobility. [0003] In order to detect ion migration in solar cells, a transient test method based on solid-state lasers has been developed internationally. However: 1. The solid-state laser is expensive and complicated to maintain, and is not suitable for large-scale industrial production; 2. The output optical power of the solid-state laser is extremely high, and its transient process is enough to make the solar cell in a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S50/15
CPCH02S50/15Y02E10/50
Inventor 刘章宸何一峰蒋碧云大卫·佩雷兹德拉若邱小永王行柱周海权李洺曦
Owner ZHEJIANG BEYONDSUN PV
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