GaAs solar battery life predicting method under space radiation environment

A space radiation environment, solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of battery maximum output power drop, battery damage, etc., and achieve the effect of saving test costs and time
CN101751501AActive Publication Date: 2010-06-23NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
Publication Date
2010-06-23

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Abstract

The invention relates to a GaAs solar battery life predicting method under space radiation environment, belonging to the space environment engineering field and spacecraft solar battery array design field; the relation of non-ionizing energy loss and incident electron energy of electrons in the solar battery material is analog-commutated by utilizing a Geant4 software radiation transportation tool box, so as to obtain the relation curve of battery damage coefficient and displacement damage dose; particle flux energy spectrum of a GEO orbit and attenuation spectrum after penetrating through a quartz glass cover sheet are analog-commutated; a life predicting model of the solar battery is built under the GEO orbit radiation environment by utilizing the solar battery damage coefficient obtained by a ground simulation test and the displacement damage dose of a space orbit, obtained by analog commutation. In the invention, by utilizing the displacement damage dose method, the effect of different space radiation environment to the attenuation of the battery performance parameter can b predicted, so as to predict the in-orbit service life of the solar battery, determine the characteristic curve and save the test expense and time.
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Description

technical field

[0001] The invention relates to a method for predicting the service life of a gallium arsenide solar energy battery in a space radiation environment, which belongs to the field of space environment engineering and the field of spacecraft solar battery array design. Background technique

[0002] In the Earth orbit space, there are three main sources of charged particle radiation: (1) Galactic cosmic rays from outside the solar system; (2) energetic electrons and protons captured by the Earth’s magnetic field to form the Earth’s radiation belt; (3) solar particle events .

[0003] Galactic cosmic rays are charged particles from outside the solar system, and their distribution throughout interstellar space is considered to be relatively stable and isotropic.

[0004] The Earth's captured radiation belts are divided into outer and inner radiation belts. The inner radiation belt is mostly trapped protons, with small amounts of electrons and ions also. The outer...

Claims

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