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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 9. Отображено 9.
30-06-2023 дата публикации

Nickel-rich ternary single-crystal positive electrode material as well as preparation method and application thereof

Номер: CN116354416A
Автор: ZHAO MINGYU, ZHANG WEI, WANG KEWEI, ZHAO YAN, XIONG JIAXIANG, WANG DIANGANG
Принадлежит:

The invention relates to a preparation method of a nickel-rich ternary single-crystal positive electrode material, which comprises the following steps: contacting a mixed solution of sodium chloride, potassium chloride and a first lithium source with a nickel-rich precursor, and drying; mixing the nickel-rich precursor with a second lithium source, and performing first sintering to obtain a sintered material; and washing and drying the sintered material, supplementing lithium, carrying out secondary sintering, and after sintering is completed, carrying out crushing and sieving to obtain the nickel-rich ternary single crystal positive electrode material. The nickel-rich ternary single-crystal positive electrode material prepared by the invention is uniform in surface appearance, smooth in surface and more ordered in surface layered structure, and the charge-discharge specific capacity and the cycle performance of the battery are effectively improved.

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Номер записи: 1
26-05-2023 дата публикации

V2O5-coated modified lithium-rich positive electrode material as well as preparation method and application thereof

Номер: CN116169267A
Автор: LIU HUI, YANG LINA, ZHANG WEI, WANG KEWEI, MA BAOHUA, ZHAO YAN, HA JUNCHUAN, XIONG JIAXIANG, WANG HAIFENG, WANG DIANGANG
Принадлежит:

The invention relates to a V2O5-coated modified lithium-rich positive electrode material as well as a preparation method and application thereof. The modified lithium-rich positive electrode material comprises a lithium-rich positive electrode material and a metal oxide layer coated on the surface of the lithium-rich positive electrode material, wherein the chemical formula of the lithium-rich positive electrode material is shown as a formula (I): LiaNixCoyMzO2 (I), a is more than or equal to 1.13 and less than or equal to 1.27, x is more than or equal to 0.10 and less than or equal to 0.30, y is more than or equal to 0.04 and less than or equal to 0.12, z is more than or equal to 0.45 and less than or equal to 0.59, x + y + z is more than or equal to 0.73 and less than or equal to 0.87, M comprises Mn and Cu, and the molar ratio of Mn to Cu is (3-117): 1; and the metal oxide layer comprises V2O5. The V2O5 coated high lithium-rich positive electrode material prepared by element doping and ...

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Номер записи: 2
26-05-2023 дата публикации

Signal transmission method, same-frequency dual-mode base station and storage medium

Номер: CN116170880A
Автор: WANG KEWEI, XU YUTAO
Принадлежит:

The invention provides a signal transmission method, a same-frequency dual-mode base station and a storage medium, and the method is suitable for the same-frequency dual-mode base station, and comprises the steps: in a downlink time slot, transmitting a first 4G downlink signal and a first 5G downlink signal through a 4G channel and a 5G channel which belong to the same working frequency band and are isolated by a sideband interval; the power spectral density of the first 4G downlink signal modulated according to the 4G preset power is the same as or equivalent to the power spectral density of the first 5G downlink signal modulated according to the 5G preset power, so that the 4G terminal can accurately identify and demodulate a target signal in the first 4G downlink signal after receiving the first 4G downlink signal. Therefore, the 5G terminal can accurately identify and demodulate the target signal in the first 5G downlink signal after receiving the first 5G downlink signal. According ...

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Номер записи: 3
23-06-2023 дата публикации

Communication device

Номер: CN116321935A
Автор: WANG KEWEI
Принадлежит:

The invention provides a communication device. The communication equipment comprises a circuit board assembly and a shielding heat dissipation assembly. The circuit board assembly comprises a plurality of board groups. The multiple plate sets are sequentially arranged in the vertical direction. The plurality of board groups are electrically connected. The shielding heat dissipation shell comprises a first shielding cavity, a second shielding cavity and a first radiator. In the vertical direction, the circuit board assembly is located between the first shielding cavity and the second shielding cavity. The first radiator is arranged on the side, back to the circuit board assembly, of the first shielding cavity. And a first accommodating space is arranged in the first shielding cavity. Part of the circuit board assembly is located in the first containing space. And a second accommodating space is arranged in the second shielding cavity. Part of the circuit board assembly is located in the ...

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Номер записи: 4
27-06-2023 дата публикации

Double-sided laminating machine for laminated paper

Номер: CN116334953A
Автор: WANG KEWEI, NIE GANG, ZOU XIN
Принадлежит:

The invention relates to the technical field of coating, in particular to a double-sided laminating machine for laminated paper, which comprises a support frame, a pressing roller, a first conveying roller, a second conveying roller, a charging box, a laminating frame and the like, the middle part of the support frame is rotatably connected with the pressing roller, the first conveying roller for conveying paper and the second conveying roller for conveying paper; the supporting frame is connected with a material containing box used for containing film spraying liquid, and the material containing box communicates with a film spraying frame used for conducting film spraying on the top face of paper. A first motor is controlled to drive a first conveying roller and a second conveying roller to rotate, paper is conveyed leftwards, a first liquid pump is controlled to spray film spraying liquid to the top face of the paper, a second liquid pump is controlled to spray much film spraying liquid ...

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Номер записи: 5
07-04-2023 дата публикации

Non-explosive rapid construction method suitable for large-section rock tunnel

Номер: CN115929328A
Автор: HE XUEDONG, LUO YUSHENG, WANG KEWEI, LIU ZHONGHOU, QI TAO, ZHONG ZEHUA, HUANG JUNZHOU, FENG JIMENG, LIU LIU, SUN SHOUHUI, HUANG HONGBIN, QI YUNGAO, CHEN SHAOYI, DU BAOBAO, YAO XIANGQIAN
Принадлежит:

The invention relates to a non-explosive rapid construction method suitable for a large-section rock tunnel. The tunneling efficiency of a tunneling machine of a cantilever tunneling machine method is directly related to the strength of surrounding rock, particularly, after the rock strength is larger than 60 MPa, the efficiency of the cantilever tunneling machine is sharply reduced, and particularly for a large-section tunnel, the efficiency of a single cantilever tunneling machine is reduced more obviously. According to the non-explosive rapid construction method suitable for the large-section rock tunnel, the expanding agent is adopted for fracturing and rock breaking firstly, and then the cantilever tunneling machine is used for excavation to conduct crossed tunneling construction, according to the construction method, after the expanding agent is adopted for rock breaking firstly, the efficiency of the cantilever tunneling machine is greatly improved; and the advantage of accurate ...

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Номер записи: 6
06-06-2023 дата публикации

Lithium nickel cobalt aluminate positive electrode material and preparation method thereof

Номер: CN116230939A
Автор: YANG LINA, ZHANG WEI, LIU HUI, WANG KEWEI, MA BAOHUA, XIONG JIAXIANG, ZHAO YAN, WANG HAIFENG, WANG DIANGANG, HA JUNCHUAN
Принадлежит:

The invention relates to a nickel cobalt lithium aluminate positive electrode material, the positive electrode material comprises a composite material particle with a core-shell structure, the core of the composite material particle contains nickel cobalt lithium aluminate; inner shell layers of the composite material particles comprise LiAlO2 and Al (OH) 3, outer shell layers of the composite material particles comprise AlF3, and the positive electrode material further comprises boron or tungsten. The preparation method comprises the following steps: mixing a precursor Ni < x > Co < y > Al < 1-x-y > (OH) < 2 >, a lithium source and an additive, sintering the obtained mixed raw material, washing the sintered material with an aluminum-containing solution, and washing with an ammonium fluoride solution to prepare the lithium nickel cobalt aluminate positive electrode material. The lithium nickel cobalt aluminate positive electrode material has high discharge capacity, high cycle stability ...

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Номер записи: 7
23-06-2023 дата публикации

Anti-deviation cutting table for edge cutting of coated paper

Номер: CN116281330A
Автор: NIE GANG, WANG KEWEI, WANG CHUANYUE
Принадлежит:

The invention relates to a coated paper conveying and cutting mechanism, in particular to an anti-deviation cutting table for edge cutting of coated paper. The anti-deviation cutting table comprises a bottom frame, a conveying cutting table body and a shell, the top of the bottom frame is connected with the conveying cutting table body, one side of the top of the bottom frame is connected with the shell, the anti-deviation cutting table further comprises a rotating ring, an air cylinder, an extrusion cone plate and a shielding cover, the shell is arranged in an openable mode and used for placing rolled coated paper into the shell, and the rotating ring is connected with the conveying cutting table body. Rotating rings are rotationally connected to the two sides of the shell, air cylinders are installed on the rotating rings on the two sides, telescopic rods of the two air cylinders are connected with extrusion cone plates, the extrusion cone plates are slidably connected with the rotating ...

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Номер записи: 8
01-08-2023 дата публикации

Steel-aluminum ash pressure brazing composite method

Номер: CN116511630A
Автор: SONG JINSHAN, WANG KEWEI, YAN HANXIN, GUO LIJUN
Принадлежит:

The invention discloses a steel-aluminum ash pressure brazing composite method, and belongs to the field of brazing. The method comprises the following steps: coating a layer of brazing material on the inner surface of a female die 4 with a stepped hole in the inner wall, and pouring molten aluminum ash 2 into the female die 4 through an inclined runner 3 with an aluminum oxide ceramic coating on the inner surface. And after pouring is completed, a pressure head of a hydraulic machine is used for immediately extruding a dead head, pressure maintaining, heat preservation, slow cooling, dead head and female die sleeve 6 cutting are carried out, a die steel cover plate 5 is welded, and then T4, T5 or T6 heat treatment is carried out. Compared with an existing brazing technology, the method has the advantages that the high temperature of the molten aluminum ash 2 is used as a heat source to melt the brazing material, and additional energy is saved. And a brazing interface adopts a pressure ...

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Номер записи: 9