Patents by Inventor Jiahao LIU
Jiahao LIU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12378127Abstract: A silica sol including silica particles exhibiting an average particle diameter distribution having at least two peaks, the silica sol being characterized in that the at least two peaks include the largest peak a, in a range of D50-D90, being present in a range of 35-200 nm, and the largest peak b, in a range of D10-D50, being present in a range from 5 nm to less than 35 nm, and that the surfaces of at least some of silica particles include an organic group bonded directly to a silicon atom via an Si—C bond, and an alkoxy group including a methoxy group or an ethoxy group, wherein the alkoxy group is bonded to the surface of the silica particles at a ratio of 0.6-3.0 alkoxy groups/nm2.Type: GrantFiled: January 13, 2023Date of Patent: August 5, 2025Assignee: NISSAN CHEMICAL CORPORATIONInventors: Megumi Araki, Naohiko Suemura, Takeshi Nakada, Hikaru Onishi, Masatoshi Sugisawa, Jiahao Liu
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Publication number: 20250229411Abstract: An intelligent towing robot is provided. The robot includes a vehicle body, an electrical system, a powertrain, and a towing part. The vehicle body includes a main body and a side frame. The main body has an upper mounting chamber and a lower mounting chamber. The electrical system is integrated into the upper mounting chamber, and the powertrain is arranged in the lower mounting chamber. The front and rear ends of the lower part of the main body are respectively provided with axle assemblies passing through the lower mounting chamber in the left-to-right direction. Two sides of the axle assembly are respectively connected with a rotating wheel, and outsides of the rotating wheels on each side mesh with a track. The powertrain includes four driving motors and a transmission device, and each driving motor is independently connected to the rotating wheel through the transmission device.Type: ApplicationFiled: April 2, 2025Publication date: July 17, 2025Applicant: WEIHAI TIANTE INTELLIGENT TECHNOLOGY CO., LTD.Inventors: Jianfeng WANG, Liwen CAO, Yuan LYU, Jingang HE, Qingling ZHAO, Quankuan LIU, Jiahao LIU, Yu SUN
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Publication number: 20250169651Abstract: The present disclosure provides a food processing machine and a motor, and the food processing machine comprises: a base assembly; a cup body assembly, and the cup body assembly can be mounted on the base assembly, and the cup body assembly comprises a cutting tool component; a motor, and the motor comprises a stator component and a rotor component, the stator component is provided in the base assembly, the rotor component brings the cutting tool component to rotate, and the stator assembly can drive the rotor component to rotate, and, a magnetic force line between the stator component and the rotor component, along the direction of a rotating axis of the rotor component, points at an S-pole of the rotor component from an N-pole of the stator component and points at an S-pole of the stator component from an N-pole of the rotor component; a magnetic force line inside the stator component points at the N-pole of the stator component from the S-pole of the stator component along a circumferential direction of thType: ApplicationFiled: April 15, 2024Publication date: May 29, 2025Inventors: Jinquan LIU, Xiantang LIANG, Jiahao LIU, Xueyuan ZHU, Huishan HUANG
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Publication number: 20240270582Abstract: A silica sol including silica particles exhibiting an average particle diameter distribution having at least two peaks, the silica sol being characterized in that the at least two peaks include the largest peak a, in a range of D50-D90, being present in a range of 35-200 nm, and the largest peak b, in a range of D10-D50, being present in a range from 5 nm to less than 35 nm, and that the surfaces of at least some of silica particles include an organic group bonded directly to a silicon atom via an Si—C bond, and an alkoxy group including a methoxy group or an ethoxy group, wherein the alkoxy group is bonded to the surface of the silica particles at a ratio of 0.6-3.0 alkoxy groups/nm2.Type: ApplicationFiled: January 13, 2023Publication date: August 15, 2024Applicant: NISSAN CHEMICAL CORPORATIONInventors: Megumi ARAKI, Naohiko SUEMURA, Takeshi NAKADA, Hikaru ONISHI, Masatoshi SUGISAWA, Jiahao LIU
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Patent number: 12057799Abstract: A method implemented in a power grid including a DFIG wind turbine is provided. The method includes: assuming the DFIG wind turbine to be operated in a MPPT mode; generating a simplified transient model of the DFIG wind turbine, the simplified transient model including an equivalent circuit model, and an equivalent rotor motion model in a nonlinear form; linearizing the equivalent rotor motion model in the nonlinear form to be an equivalent rotor motion model in a linear form with respect to a steady-state operating point of the DFIG wind turbine; and determining a first contribution and a second contribution of the DFIG wind turbines to a post-disturbance frequency of the power grid, in a center of inertia (COI) frequency frame and in a frequency spatial variation frame, respectively, by incorporating the simplified transient model of the DFIG wind turbine into a frequency dynamics analysis.Type: GrantFiled: December 12, 2023Date of Patent: August 6, 2024Assignee: North China Electric Power UniversityInventors: Tianshu Bi, Cheng Wang, Jiahao Liu, Guoyi Xu
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Publication number: 20240243381Abstract: A method of separating valuable materials. The method includes a heat treatment step of performing a heat treatment on a lithium-ion secondary battery including valuable materials, a crushing step of crushing a heat-treated product obtained in the heat treatment step, and a classification step including a first classification step of classifying a crushed product obtained in the crushing step into a coarse-particle product and an intermediate product at a classification cut-point of 0.6 mm or greater and 2.4 mm or less, and a second classification step of classifying the intermediate product into a medium-particle product and a fine-particle product at a classification cut-point of 40 ?m or greater and 300 ?m or less.Type: ApplicationFiled: March 1, 2022Publication date: July 18, 2024Applicant: DOWA ECO-SYSTEM CO., LTD.Inventors: Masataka YAMASHITA, Yoshihiro HONMA, Chihiro NISHIKAWA, Jiahao LIU, Shota TAHATA, Changzhi LIU
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Patent number: 12012368Abstract: An object is to provide a cage silicate that can be industrially safely and simply produced by using an alkali silicate solution that does not generate alcohol as a Si raw material and using non-toxic quaternary ammonium, and a method for producing the same. The problem is solved by the following cage silicate: A cage silicate consisting of anion component 1 represented by following formula (1), anion component 2 which is a mineral acid ion, cation component 1 represented by following formula (2), and cation component 2 which is an alkali ion, in which, to the mole number in terms of SiO2, a ratio of the mole number of water, (H2O/SiO2), is 0.7 to 30, a ratio of the mole number of alkali ions, (alkali ions/SiO2), is 1.0×10?7 to 1.0?10?2, and a ratio of the mole number of the mineral acid ions, (mineral acid ions/SiO2), is 1.0×10?7 to 1.0×10?3. In formula (2), R represents an alkyl group having 2 to 20 carbon atoms.Type: GrantFiled: February 15, 2023Date of Patent: June 18, 2024Assignee: NISSAN CHEMICAL CORPORATIONInventors: Jiahao Liu, Takuya Fukuoka, Hiroaki Sakaida
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Patent number: 12007422Abstract: Online estimation of area-level inertia can be used for frequency stability control in low-inertia power systems. This disclosure provides an area-level inertia online estimation method considering inter-area equivalent frequency dynamics. The disclosed method only needs one phasor measurement unit placed at any bus within each area. The inter-area equivalent frequency dynamics model for the multi-area power system is developed, which is employed to estimate area-level inertia under the small disturbance situation. Then, the area-level inertia estimation model boils down to a nonlinear parameter identification problem. The other boundary conditions of the disclosed method are derived by parameter identifiability.Type: GrantFiled: January 11, 2024Date of Patent: June 11, 2024Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Tianshu Bi, Cheng Wang, Jiahao Liu, Guoyi Xu
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Patent number: 11999625Abstract: Provided is a method capable of easily producing a layered silicate in a short time. The problem may be solved by a method of producing a layered silicate, including the following steps (a) and (b): (a) providing a cage silicate that contains an anion component represented by formula (1) below and a cation component represented by formula (2) below with a ratio of the mole number of water to the mole number of the anion component in terms of SiO2, (H2O/SiO2), of 0.7 to 30; (in formula (2), R represents an alkyl group having 2 to 9 carbon atoms) and (b) treating the cage silicate obtained in step (a) in an autoclave.Type: GrantFiled: February 15, 2023Date of Patent: June 4, 2024Assignee: NISSAN CHEMICAL CORPORATIONInventors: Jiahao Liu, Hirotake Kitagawa
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Patent number: 11923688Abstract: An exemplary two-step method for power system inertia online estimation is described. The first step is to accurately estimate the POI-level aggregated inertia. The second step is to calculate the system-level inertia constant by weighting all the POI-level aggregated inertia and to monitor the inertia spatial distribution. In one example embodiment, the PMU is installed at POI, the frequency spatial difference is considered, and the mechanical power is carefully treated.Type: GrantFiled: July 5, 2023Date of Patent: March 5, 2024Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Tianshu Bi, Cheng Wang, Jiahao Liu, Guoyi Xu
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Patent number: 11906556Abstract: Online estimation of area-level inertia can be used for frequency stability control in low-inertia power systems. This disclosure provides an area-level inertia online estimation method considering inter-area equivalent frequency dynamics. The disclosed method only needs one phasor measurement unit placed at any bus within each area. The inter-area equivalent frequency dynamics model for the multi-area power system is developed, which is employed to estimate area-level inertia under the small disturbance situation. Then, the area-level inertia estimation model boils down to a nonlinear parameter identification problem. The other boundary conditions of the disclosed method are derived by parameter identifiability.Type: GrantFiled: June 8, 2023Date of Patent: February 20, 2024Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Tianshu Bi, Cheng Wang, Jiahao Liu, Guoyi Xu
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Publication number: 20240051913Abstract: An object is to provide a cage silicate that can be industrially safely and simply produced by using an alkali silicate solution that does not generate alcohol as a Si raw material and using non-toxic quaternary ammonium, and a method for producing the same. The problem is solved by the following cage silicate: A cage silicate consisting of anion component 1 represented by following formula (1), anion component 2 which is a mineral acid ion, cation component 1 represented by following formula (2), and cation component 2 which is an alkali ion, in which, to the mole number in terms of SiO2, a ratio of the mole number of water, (H2O/SiO2), is 0.7 to 30, a ratio of the mole number of alkali ions, (alkali ions/SiO2), is 1.0×10?7 to 1.0×10?2, and a ratio of the mole number of the mineral acid ions, (mineral acid ions/SiO2), is 1.0×10?7 to 1.0×10?3. In formula (2), R represents an alkyl group having 2 to 20 carbon atoms.Type: ApplicationFiled: February 15, 2023Publication date: February 15, 2024Applicant: Nissan Chemical CorporationInventors: Jiahao LIU, Takuya FUKUOKA, Hiroaki SAKAIDA
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Publication number: 20240051834Abstract: Provided is a method capable of easily producing a layered silicate in a short time. The problem may be solved by a method of producing a layered silicate, including the following steps (a) and (b): (a) providing a cage silicate that contains an anion component represented by formula (1) below and a cation component represented by formula (2) below with a ratio of the mole number of water to the mole number of the anion component in terms of SiO2, (H2O/SiO2), of 0.7 to 30; (in formula (2), R represents an alkyl group having 2 to 9 carbon atoms) and (b) treating the cage silicate obtained in step (a) in an autoclave.Type: ApplicationFiled: February 15, 2023Publication date: February 15, 2024Applicant: Nissan Chemical CorporationInventors: Jiahao LIU, Hirotake KITAGAWA
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Patent number: 11888432Abstract: A method implemented in a power grid including a DFIG wind turbine is provided. The method includes: assuming the DFIG wind turbine to be operated in a MPPT mode; generating a simplified transient model of the DFIG wind turbine, the simplified transient model including an equivalent circuit model, and an equivalent rotor motion model in a nonlinear form; linearizing the equivalent rotor motion model in the nonlinear form to be an equivalent rotor motion model in a linear form with respect to a steady-state operating point of the DFIG wind turbine; and determining a first contribution and a second contribution of the DFIG wind turbines to a post-disturbance frequency of the power grid, in a center of inertia (COI) frequency frame and in a frequency spatial variation frame, respectively, by incorporating the simplified transient model of the DFIG wind turbine into a frequency dynamics analysis.Type: GrantFiled: July 17, 2023Date of Patent: January 30, 2024Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Tianshu Bi, Cheng Wang, Jiahao Liu, Guoyi Xu
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Patent number: 11876381Abstract: This disclosure provides a method to limit the post-disturbance node maximum RoCoF by optimizing UC decisions. The node initial RoCoF expressions under common disturbance types, including the load, the line switching, and the generator turbine disturbances, are derived. Then, the piecewise linear relationship between the node initial RoCoF and UC decision variables are obtained. To avoid numerical simulation of the node maximum RoCoF, two analytical constraints, i.e., the node initial RoCoF constraint and the COI maximum RoCoF constraint, are formulated in the UC model.Type: GrantFiled: July 5, 2023Date of Patent: January 16, 2024Assignee: North China Electric Power UniversityInventors: Tianshu Bi, Cheng Wang, Jiahao Liu, Guoyi Xu
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Patent number: 11837872Abstract: This disclosure provides a method to limit the post-disturbance node maximum RoCoF by optimizing UC decisions. The node initial RoCoF expressions under common disturbance types, including the load, the line switching, and the generator turbine disturbances, are derived. Then, the piecewise linear relationship between the node initial RoCoF and UC decision variables are obtained. To avoid numerical simulation of the node maximum RoCoF, two analytical constraints, i.e., the node initial RoCoF constraint and the COI maximum RoCoF constraint, are formulated in the UC model.Type: GrantFiled: March 2, 2023Date of Patent: December 5, 2023Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Tianshu Bi, Cheng Wang, Jiahao Liu, Guoyi Xu
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Patent number: 11777321Abstract: An exemplary two-step method for power system inertia online estimation is described. The first step is to accurately estimate the POI-level aggregated inertia. The second step is to calculate the system-level inertia constant by weighting all the POI-level aggregated inertia and to monitor the inertia spatial distribution. In one example embodiment, the PMU is installed at POI, the frequency spatial difference is considered, and the mechanical power is carefully treated.Type: GrantFiled: March 2, 2023Date of Patent: October 3, 2023Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Tianshu Bi, Cheng Wang, Jiahao Liu, Guoyi Xu
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Publication number: 20230119544Abstract: Provided is a method for concentrating a valuable metal contained in a lithium ion secondary battery, for processing a lithium ion secondary battery containing at least one element selected from the group consisting of cobalt and nickel, or a positive electrode material of the lithium ion secondary battery, to concentrate a valuable metal containing either or both of cobalt and nickel. The method includes a thermal treatment step of thermally treating the lithium ion secondary battery or the positive electrode material thereof, to form a granular aggregate containing at least one valuable metal selected from the group consisting of cobalt and nickel.Type: ApplicationFiled: March 1, 2021Publication date: April 20, 2023Applicant: DOWA ECO-SYSTEM CO., LTD.Inventors: Ryoei WATANABE, Yoshihiro HONMA, Chihiro NISHIKAWA, Masataka YAMASHITA, Jiahao LIU
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Publication number: 20230104467Abstract: A gas barrier film-forming composition comprising the following components: plate-like particles composed of exfoliated layer substances generated through interlayer exfoliation of layered compound, plate-like particles having average thickness of 0.7 nm to 100 nm, average major-axis length of 100 nm to 100,000 nm, and ratio of (maximum major-axis length/width orthogonal to maximum major-axis length) of 1.0 to 10.0, and containing quaternary ammonium ions each having total carbon atom number of 13 to 45 and one or two C10-20 alkyl groups, and anionic surfactant having ammonium ion, wherein the amount of each of quaternary ammonium ions and anionic surfactant is more than 0% by mass and 3.0% by mass or less relative to mass of plate-like particles, a water-soluble polymer; and an aqueous medium. The gas barrier film-forming composition, wherein layered compound is ilerite. A formed product comprising a base and a gas barrier film disposed on surface of the base.Type: ApplicationFiled: December 23, 2021Publication date: April 6, 2023Applicant: NISSAN CHEMICAL CORPORATIONInventors: Masahiro HIDA, Shuhei YAMADA, Jiahao LIU, Hirotake KITAGAWA
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Patent number: 11340730Abstract: Disclosed are a driving method for a touch display panel, and a touch display apparatus. The driving method for a touch display panel includes: providing a sinusoidal signal y for each electrode block in a common electrode within a display period, wherein the display period includes N display stages, each display stage has M image frames, the refresh rate of the display period is greater than or equal to a refresh rate threshold value A, N?2, M?1, N is a positive integer, M is a positive number, and the refresh rate threshold value A is the maximum refresh rate that can be identified by human eyes; providing a data signal for multiple pixel electrodes; and an electric field, formed by the pixel electrodes and the common electrode, driving the inversion of liquid crystal molecules in a liquid crystal layer.Type: GrantFiled: March 23, 2020Date of Patent: May 24, 2022Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Jinxing Liu, Ming Chen, Xue Dong, Bo Gao, Wenjia Sun, Xiaozhou Liu, Yannan Xiong, Jiahao Liu, Shaoru Zhang, Yang Chen