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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 4. Отображено 4.
07-04-2022 дата публикации

SELECTIVE EMITTER PREPARATION METHOD, SOLAR CELL AND PREPARATION METHOD THEREFOR

Номер: WO2022068132A1
Автор: LIAO, Hui, MA, Yuchao, CHEN, Peng, SHAN, Wei, HE, Sheng, XU, Weizhi
Принадлежит:

The present invention relates to the technical field of solar cells. Disclosed are a selective emitter preparation method, a solar cell and a preparation method therefor. The selective emitter preparation method comprises: obtaining an N-type silicon wafer, and depositing a mask layer on a front face thereof; forming a window at a position, corresponding to a metal gate line, of the mask layer; performing a diffusion treatment, so as to form a heavily doped region at the position corresponding to the window; removing the mask layer; and performing a diffusion treatment on the N-type silicon wafer after the mask layer is removed, so as to form a lightly doped region on the front face of the N-type silicon wafer after the mask layer is removed, so as to obtain a selective emitter. In the present application, a selective emitter is formed on a surface of an N-type silicon wafer by means of forming a mask layer and performing a diffusion treatment twice; and the sheet resistance of a heavily ...

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Номер записи: 1
13-08-2021 дата публикации

TOPCon battery and manufacturing method thereof

Номер: CN113257956A
Автор: MA YUCHAO, CHEN PENG, YANG JINFANG, SHAN WEI, HE SHENG, XU WEIZHI, 马玉超, 陈彭, 杨金芳, 单伟, 何胜, 徐伟智
Принадлежит:

The invention discloses a TOPCon battery and a manufacturing method thereof. The method comprises the following steps of: obtaining a semi-finished product of the TOPCon battery, the semi-finished product comprising a silicon wafer, a tunneling oxide layer located on the back surface of the silicon wafer, a doped polycrystalline silicon layer, a back surface passivation layer, an emitter layer located on the front surface of the silicon wafer and a front surface passivation layer; grooving the front of the semi-finished product at positions corresponding to front fine grid lines to form slotted holes; preparing back main grid lines and back fine grid lines on the back of the semi-finished product; preparing aluminum fine grid lines in the slotted holes in an electroplating mode; and preparing front main grid lines on the front of the semi-finished product, and sintering the semi-finished product to obtain the TOPCon battery. According to the method, the aluminum fine grid lines are formed ...

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Номер записи: 2
25-04-2023 дата публикации

Highly unbalanced classification method in complex noise environment

Номер: CN116010788A
Автор: CHEN FANG, CHEN PENG, JIANG LEI, MO LU, ZHANG YUN, XU JIANBO, ZHAO YIJIANG
Принадлежит:

The invention discloses a highly unbalanced classification method in a complex noise environment. The method comprises the following four steps: 1) dividing a sample set with complex noise into two cubes in a three-dimensional feature space; 2) performing region division on the sample points in each cube to obtain partitioned sample points; 3) in order to make up the defects of the partition sample points, introducing non-safe sample points, so as to carry out curve fitting on the divided feature space; and 4) finally, carrying out random undersampling on the highly unbalanced data set through a classifier formed by fitting to obtain a balanced data set for establishing a classification model. The method serves as the first classifier for processing a highly unbalanced data set with complex noise so far, extra parameters do not need to be introduced, and the method is simple, efficient and suitable for any scene; as a complex noise sample classifier, data redundancy is reduced; and as a ...

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Номер записи: 3
11-08-2023 дата публикации

Novel low-speed wind tunnel metering device

Номер: CN116577063A
Автор: XIAO HUI, ZHOU YI, ZHAO ZUOGUANG, XU ZHAO, WANG XIN, WANG XUELI, CHEN PENG
Принадлежит:

A novel low-speed wind tunnel metering device disclosed by the present invention comprises a mounting assembly, the mounting assembly comprises a mounting seat, and the side part of the mounting seat is provided with a stabilizing assembly; the metering assembly is arranged at the side part of the mounting assembly and comprises a bell jar type gas flow standard device, a pneumatic ball valve arranged at the outer side of the bell jar type gas flow standard device, a flow stabilizing component arranged at one side of the pneumatic ball valve and a test component connected with the flow stabilizing component; a novel low-speed wind tunnel metering device is used as a standard device, stable flowing gas can be generated, the precise gas flow speed can be provided, a contraction and expansion exhaust device is designed at a gas flow outlet, and due to segmented installation of metering assemblies, the external interference of the manufacturing process is reduced, and the gas flow stability ...

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Номер записи: 4