公开(公告)号：US12054656B2

公开(公告)日：2024-08-06

申请号：US17276723

申请日：2019-08-02

Applicant: Zhijing Nanotech Co., LTD ,  Beijing Institute of Technology

Inventor： Fei Li ,  Haizheng Zhong ,  Jingjing Wang

IPC: C09K11/02 ,  C09K11/06 ,  C09K11/66 ,  H10K85/30 ,  G02F1/13357 ,  H10K50/115

CPC classification number: C09K11/025 ,  C09K11/06 ,  C09K11/665 ,  H10K85/30 ,  C09K2211/10 ,  C09K2211/181 ,  C09K2211/188 ,  G02F1/133617 ,  H10K50/115

Abstract: The present application discloses a composite light-emitting material, a production method thereof, and use thereof, wherein the composite light-emitting material has a perovskite nanomaterial and a matrix; the perovskite nanomaterial comprises γ-CsPbI3 and an addition element M; and the addition element M is selected from at least one of Li, Na, K, and Rb.

公开(公告)号：US11942791B2

公开(公告)日：2024-03-26

申请号：US17485485

申请日：2021-09-26

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Fang Deng ,  Yanxin Ji ,  Xinyu Fan ,  Yeyun Cai ,  Chengwei Mi ,  Feng Gao ,  Jie Chen ,  Lihua Dou

IPC: H02J50/00 ,  G06F3/02 ,  G06F3/023 ,  H02J7/00 ,  H02J7/35 ,  H02J50/10 ,  H02J50/40

CPC classification number: H02J50/001 ,  G06F3/0202 ,  G06F3/0231 ,  H02J7/0013 ,  H02J7/35 ,  H02J50/005 ,  H02J50/10 ,  H02J50/402 ,  H02J2207/20 ,  H02J2300/24

Abstract: A self-powered wireless keyboard by modifying the structure of a traditional membrane keyboard having a volcanic crater structure. Not damaging the original membrane keyboard structure, a micro magnet core is installed inside a cylindrical protrusion block under the key cap as a mover of the induction power generation device, and an induction coil is wound in a key slot of the keyboard base as the stator of the induction power generation device. In this way, when each key is pressed, it will produce induction current. A layer of flexible solar cell can be laid on the upper surface of the key, which can generate electricity by collecting the light energy in the surrounding environment during the time of daily illumination.

公开(公告)号：US20240039474A1

公开(公告)日：2024-02-01

申请号：US18377993

申请日：2023-10-09

Applicant: Beijing Institute of Technology

Inventor： Shanshan Wang ,  Qiaoshi An ,  Jianxin Du ,  Shaochun Peng ,  Jiatao Zhang ,  Peifeng Gao ,  Jianbing Gao ,  Mengyun Jiang ,  Peng Mao ,  Qiwen Yang

IPC: H02S50/10 ,  H10K30/30 ,  H10K30/40 ,  H10K30/50 ,  H10K30/82 ,  H10K71/12 ,  H10K71/60

CPC classification number: H02S50/10 ,  H10K30/30 ,  H10K30/40 ,  H10K30/50 ,  H10K30/82 ,  H10K71/12 ,  H10K71/60 ,  H10K2102/103

Abstract: The present invention relates to an organic solar cell for a current-voltage test and a preparation method thereof. The disclosed organic solar cell for the current-voltage test comprises a substrate with a preset ITO pattern, wherein ITO on the substrate with the preset ITO pattern is used as the anode layer, and a hole transport layer, an active layer, an electron transport layer and a cathode layer are stacked successively to form a solar cell. A plurality of cell positions are designed on the substrate in the present invention. Each cell has an independent cathode test site and an anode test site. The distance between the test site of each cell and the cell is kept the same and the distance is short enough; and the cells are distributed evenly on the substrate discretely. The present invention has high substrate utilization rate, high data accuracy and good parallelism.

公开(公告)号：US20230406108A1

公开(公告)日：2023-12-21

申请号：US18212143

申请日：2023-06-20

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Jianwei LI ,  Zhonghao TIAN ,  Xinming WAN ,  Hongwen HE ,  Fengchun SUN ,  Wenjun GUO ,  Zhanxin MAO

IPC: B60L3/04

CPC classification number: B60L3/04

Abstract: The present disclosure relates to a risk early warning method and system for hydrogen leakage, and relates to the field of hydrogen leakage. The method includes: obtaining ventilation information of a hydrogen-related area; carrying out grid division on a pipeline system of the hydrogen-related area to obtain a gridded pipeline system; determining a risk coefficient corresponding to each grid of the gridded pipeline system according to leakage sources of the pipeline system; determining a high-risk region by means of a jet cone model according to the risk coefficients; determining a medium-risk region, a low-risk region and a safe region according to the risk coefficients and the ventilation information; and carrying out risk early warning according to the high-risk region, the medium-risk region, the low-risk region and the safe region.

公开(公告)号：US20230369005A1

公开(公告)日：2023-11-16

申请号：US18316257

申请日：2023-05-12

Applicant: Beijing Institute of Technology

Inventor： Li XI ,  Kaiyuan XUE ,  Daining FANG

IPC: H01J35/10 ,  H01J35/06 ,  H01J35/14 ,  H01J35/20

CPC classification number: H01J35/106 ,  H01J35/101 ,  H01J35/066 ,  H01J35/147 ,  H01J35/20 ,  H01J2235/1026 ,  H01J2235/1275

Abstract: A rotary-transmission-target microfocus X-ray source and an X-ray generation method based on the rotary-transmission-target microfocus X-ray source are provided. The X-ray source comprises a chamber, and an electron beam system is installed in the chamber. The electron beam system is arranged on a same side as an anode target rotating shaft. A motor in a rotary anode target system drives an anode target to rotate through a bevel gear transmission device. The microstructure of a target is designed. An electron beam emitted by the electron beam system vertically bombards the metal target of the rotating anode target. A cooling system is configured to cool the anode target.

公开(公告)号：US11814331B2

公开(公告)日：2023-11-14

申请号：US16751731

申请日：2020-01-24

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Peng Yin ,  Yuren Lu ,  Ruili Jia ,  Jianfeng Song

IPC: C06B21/00 ,  B29C35/08

CPC classification number: C06B21/0091 ,  B29C35/08 ,  C06B21/0058

Abstract: The present disclosure is related to the technical field of propellant performance research, and in particular, to a method for reducing propellant curing residual stress by a high-energy acoustic beam. The method includes the following steps: injecting a propellant slurry into a curing container and waiting for the propellant slurry to start curing; actuating, when the propellant slurry starts curing, a high-energy acoustic beam generator and a high-energy acoustic beam transducer to continuously emit high-energy acoustic beam to the propellant slurry in the curing container until the propellant slurry is cured to form a propellant grain; and closing the high-energy acoustic beam generator and the high-energy acoustic beam transducer. The method for reducing propellant curing residual stress by high-energy acoustic beam provided in the present disclosure can reduce residual stress inside the propellant in an effective manner, thereby ensuring operation safety of the aerospace equipment.

公开(公告)号：US11794383B2

公开(公告)日：2023-10-24

申请号：US17816465

申请日：2022-08-01

Applicant: Beijing Institute of Technology

Inventor： Baosheng Xu ,  Chenqi Wang ,  Lijie Qu ,  Yanfei Chen ,  Daining Fang ,  Yazheng Yang

IPC: B29C39/12 ,  C09K5/14 ,  C08L61/06 ,  C08K3/04 ,  B29C39/42 ,  F16L59/02 ,  B29K61/04 ,  B29K507/04

CPC classification number: B29C39/123 ,  B29C39/42 ,  C08K3/04 ,  C08L61/06 ,  C09K5/14 ,  F16L59/029 ,  B29K2061/04 ,  B29K2507/04 ,  B29K2995/0013 ,  C08K2201/001

Abstract: Disclosed is a material with directional thermal conduction and thermal insulation and a preparation method thereof. The method includes: (1) dispersing a viscose-based carbon fiber in water and adding a phenolic resin and polyacrylamide sequentially to obtain a dispersion I; dispersing a high-thermal conduction carbon fiber in water and adding a phenolic resin and polyacrylamide sequentially to obtain a dispersion II; (2) dividing equally the dispersion I and the dispersion II into several parts, respectively, pouring each part of the dispersion I and each part of the dispersion II into a mold alternately until all the dispersion I and the dispersion II are poured, draining after each pouring of a part of the dispersion I or a part of the dispersion II to obtain a porous carbon fiber skeleton, and solidifying the skeleton to obtain a preform; (3) subjecting the preform to a heat treatment to obtain the material.

公开(公告)号：US20230333172A1

公开(公告)日：2023-10-19

申请号：US18300116

申请日：2023-04-13

Applicant: Beijing Institute of Technology

Inventor： Huixing MENG ,  Mengyao GENG ,  Cheng WANG ,  Jinduo XING

IPC: G01R31/387 ,  G01R31/367

CPC classification number: G01R31/387 ,  G01R31/367

Abstract: One or more embodiments of the present specification provide a method and device for capacity degradation prediction of a lithium-ion battery. The method comprises the following steps: acquiring an original battery discharge capacity; decomposing the original battery discharge capacity through a predetermined mode decomposition method to obtain battery discharge capacities composed of a plurality of different frequency signals; inputting the respective frequency signals into a pre-constructed capacity prediction model to obtain capacity prediction results corresponding to the respective frequency signals; selecting capacity prediction result that satisfies a predetermined relevance condition corresponding to the respective frequency signals; and reconstructing the finally predicted battery discharge capacity according to the capacity prediction result that satisfies the predetermined relevance condition.

公开(公告)号：US20230264700A1

公开(公告)日：2023-08-24

申请号：US18015020

申请日：2021-06-01

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Lei ZHANG ,  Zhenpo WANG ,  Xiaolin DING

IPC: B60W40/12 ,  B60W50/00

CPC classification number: B60W40/12 ,  B60W50/00 ,  B60W2050/0031 ,  B60W2520/12 ,  B60W2520/14 ,  B60W2050/0052

Abstract: A method and a system for vehicle sideslip angle estimation based on event-triggered state estimation are provided. The method includes: setting an observation variable, and adopting a Kalman filtering algorithm for iteration aiming at estimation of a vehicle yaw rate; in the iteration, setting a parameter to 1, indicating that an event is triggered, when a calculation of the observation variable satisfies a predetermined condition, otherwise setting the parameter to 0, indicating that the event is not triggered; when the parameter is set and a GPS heading angle is updated, estimating a state variable according to a formula, and calculating a vehicle sideslip angle according to the vehicle yaw rate obtained by adopting the Kalman filtering algorithm; and when the parameter is 1 and the GPS heading angle is not updated yet, estimating the vehicle sideslip angle by fusing measurement data of both a GPS and an IMU.

公开(公告)号：US11733210B2

公开(公告)日：2023-08-22

申请号：US17365264

申请日：2021-07-01

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Lei He ,  Dingguo Xiao ,  Qiutao Wang

IPC: G01N29/06 ,  G01N29/09 ,  G01N29/34

CPC classification number: G01N29/0645 ,  G01N29/09 ,  G01N29/34 ,  G01N2291/0237 ,  G01N2291/02827 ,  G01N2291/044 ,  G01N2291/048

Abstract: An ultrasonic detection and tensile calibration test method for bonding strength grade comprising bonding an upper substrate block to bonding groove(s) to form a theoretical bonding area, and applying a downward actual tensile force to a lower substrate block; obtaining an actual bonding area of the theoretical bonding area; calculating a first actual bonding strength by using the actual tensile force and the actual bonding area, and comparing the first actual bonding strength with a second actual bonding strength calculated to verify the correctness of the theoretical bonding area as a calibrated bonding strength; forming a bond strength table in which the theoretical bonding areas, the actual bonding areas and the first actual bonding strengths are in one-to-one correspondence; and using the actual bonding area to find the actual bonding strength corresponding to the actual bonding area from the bonding area bonding strength table.