Patents by Inventor Weijin Li
Weijin Li 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: 11936183Abstract: An energy Internet system, an energy routing conversion device, and an energy control method, relating to a field of energy information. An alternating-current (AC) side energy routing conversion device of the energy Internet system includes a plurality of first route ports, and a direct-current (DC) side energy routing conversion device includes a plurality of second route ports, where each second route port is connected to a corresponding first route port by means of a corresponding DC busbar. A plurality of energy devices are connected to a DC busbar by means of corresponding first AC/DC converters or first DC converters. The AC side energy routing conversion device and the DC side energy routing conversion device collect energy information of the energy devices and adjust energy of the energy devices on a basis of energy balance constraint conditions.Type: GrantFiled: December 13, 2018Date of Patent: March 19, 2024Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAIInventors: Mingzhu Dong, Zhigang Zhao, Meng Huang, Xuefen Zhang, Shugong Nan, Shiyong Jiang, Meng Li, Wenqiang Tang, Peng Ren, Wu Wen, Lingjun Wang, Xiao Luo, Wenhao Wu, Jianjun Huang, Weijin Li, Yunhong Zeng, Bei Chen
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Publication number: 20230283189Abstract: The present disclosure provides a soft start circuit and a power supply circuit. The soft start circuit is disposed between a negative electrode of a direct current bus capacitor and a negative terminal of a direct current power supply, so as to control, after a start begins, according to the current input by the direct current bus capacitor in a constant current module, whether to electrically connect the direct current power supply and the direct current bus capacitor; one end of the soft start circuit is further connected to a filtering protection module, so as to control, at the beginning of the start, according to the voltage output by the filtering protection module, the direct current power supply to be electrically connected to the direct current bus capacitor.Type: ApplicationFiled: July 12, 2021Publication date: September 7, 2023Inventors: Qigui Hu, Ke Yuan, Weijin Li, Xueyun Zheng
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Publication number: 20230283082Abstract: Disclosed are an on-grid/off-grid scheduling method and apparatus, and an energy storage power supply system. The method is applied to the system. The system includes an energy storage device; the energy storage device is connected to a direct current bus; one end of the direct current bus is connected to a power grid by means of an AC-DC module, and the other end is connected to a load. The method includes: after the energy storage device enters an off-grid operation mode, controlling an output voltage of the energy storage device to decrease once every first preset duration; and every time the output voltage of the energy storage device is controlled to decrease, obtaining an input voltage change situation of the load, and determining, according to the input voltage change situation of the load, whether to control the energy storage device to switch to an on-grid operation mode.Type: ApplicationFiled: September 8, 2021Publication date: September 7, 2023Inventors: Weijin Li, Yunhong Zeng
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Patent number: 11564548Abstract: Disclosed is a cleaning robot capable of simultaneously driving a driving wheel and an impeller by a single motor, including a motor output shaft, a driving wheel provided with a second rotating shaft and an impeller provided with a first rotating shaft; a connector is connected between the motor output shaft and the first rotating shaft; and a speed reducer is connected between the connector and the second rotating shaft. The cleaning robot moves forward and backward and makes a turn by the driving wheel, allows wastes to enter an internal filter element under the action of negative pressure generated by the internal impeller, and discharges the purified water or air out of the equipment. The present invention can simultaneously drive the impeller and the driving wheel by using only one motor and can enable the driving wheel and the impeller to generate different rotating speeds.Type: GrantFiled: January 29, 2021Date of Patent: January 31, 2023Assignee: POOLELF SMART TECHNOLOGY CO., LTD.Inventors: Xin Cao, Weijin Li
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Publication number: 20220320859Abstract: The present disclosure relates to the technical field of smart home, and provides a direct current load response control method and device, and a direct current electric appliance. The direct current load response control method of the present disclosure comprises: monitoring a utilization voltage of a direct current load; determining whether the utilization voltage is within a response interval; and controlling the operation of the direct current load according to the determination result and the type of the direct current load.Type: ApplicationFiled: July 7, 2020Publication date: October 6, 2022Applicant: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAIInventors: Jinrong YUAN, Zhigang ZHAO, Weijin LI, Qiulian LI, Jiangxi SONG
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Publication number: 20220240745Abstract: Disclosed is a cleaning robot capable of simultaneously driving a driving wheel and an impeller by a single motor, including a motor output shaft, a driving wheel provided with a second rotating shaft and an impeller provided with a first rotating shaft; a connector is connected between the motor output shaft and the first rotating shaft; and a speed reducer is connected between the connector and the second rotating shaft. The cleaning robot moves forward and backward and makes a turn by the driving wheel, allows wastes to enter an internal filter element under the action of negative pressure generated by the internal impeller, and discharges the purified water or air out of the equipment. The present invention can simultaneously drive the impeller and the driving wheel by using only one motor and can enable the driving wheel and the impeller to generate different rotating speeds.Type: ApplicationFiled: January 29, 2021Publication date: August 4, 2022Inventors: Xin CAO, Weijin LI
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Publication number: 20210156163Abstract: An autonomous cleaner includes a suction enhancer arrangement for mounting adjacent to an intake opening provided on a base surface of the autonomous cleaner. The suction enhancer arrangement includes at least one barrier member having a mounting end side mounted to the base surface and a free end side downwardly extended from the base surface. The at least one barrier member is made of elastic material and arranged to be positioned and extended between two side portions of the base surface and adjacent to the intake opening, defining a space below the base surface and the at least one barrier member as an intaking space, such that a flow of liquid to be sucked into the intake opening is speed up in the intaking space to enhance a suction effect thereat.Type: ApplicationFiled: June 22, 2020Publication date: May 27, 2021Inventors: Xin CAO, Weijin LI
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Publication number: 20210044146Abstract: An energy Internet system, an energy routing conversion device, and an energy control method, relating to a field of energy information. An alternating-current (AC) side energy routing conversion device of the energy Internet system includes a plurality of first route ports, and a direct-current (DC) side energy routing conversion device includes a plurality of second route ports, where each second route port is connected to a corresponding first route port by means of a corresponding DC busbar. A plurality of energy devices are connected to a DC busbar by means of corresponding first AC/DC converters or first DC converters. The AC side energy routing conversion device and the DC side energy routing conversion device collect energy information of the energy devices and adjust energy of the energy devices on a basis of energy balance constraint conditions.Type: ApplicationFiled: December 13, 2018Publication date: February 11, 2021Applicant: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAIInventors: Mingzhu DONG, Zhigang ZHAO, Meng HUANG, Xuefen ZHANG, Shugong NAN, Shiyong JIANG, Meng LI, Wenqiang TANG, Peng REN, Wu WEN, Lingjun WANG, Xiao LUO, Wenhao WU, Jianjun HUANG, Weijin LI, Yunhong ZENG, Bei CHEN
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Patent number: 9524886Abstract: A brush core for engaging and rotating a generally cylindrical brush having a hollow bore is provided. The brush core includes, but is not limited to, a body section forming an outer surface for engaging the hollow bore of the cylindrical brush. The outer surface of the body section includes three or more sides.Type: GrantFiled: May 6, 2010Date of Patent: December 20, 2016Assignee: ILLINOIS TOOL WORKS INC.Inventors: Robert G. Kobetsky, Daniel P. McDonald, Alan Varacins, David F. Hakala, Weijin Li
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Patent number: 9187419Abstract: Disclosed are intermediates of Sitagliptin, a preparation process thereof, and a process for synthesizing Sitagliptin using these intermediates. Sitagliptin is synthesized by using chiral amino compounds as a raw material, without having to build a chiral center with a chiral asymmetric catalytic hydrogenation, and high-pressure hydrogenation is avoided.Type: GrantFiled: December 1, 2011Date of Patent: November 17, 2015Assignee: ZHEJIANG HISOAR PHARMACEUTICAL CO., LTD.Inventors: Xianhua Pan, Weijin Li, Qunhui Zhang, Libo Ruan, Wansheng Yu, Fei Deng, Tianhua Ma, Mingwang Huang, Minhuan He
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Publication number: 20130281695Abstract: Disclosed are intermediates of Sitagliptin, a preparation process thereof, and a process for synthesizing Sitagliptin using these intermediates. Sitagliptin is synthesized by using chiral amino compounds as a raw material, without having to build a chiral center with a chiral asymmetric catalytic hydrogenation, and high-pressure hydrogenation is avoided.Type: ApplicationFiled: December 1, 2011Publication date: October 24, 2013Applicant: ZHEJIANG HISOAR PHARMACEUTICAL CO., LTD.Inventors: Xianhua Pan, Weijin Li, Qunhui Zhang, Libo Ruan, Wansheng Yu, Fei Deng, Tianhua Ma, Mingwang Huang, Minhuan He
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Publication number: 20100288305Abstract: A brush core for engaging and rotating a generally cylindrical brush having a hollow bore is provided. The brush core includes, but is not limited to, a body section forming an outer surface for engaging the hollow bore of the cylindrical brush. The outer surface of the body section includes three or more sides.Type: ApplicationFiled: May 6, 2010Publication date: November 18, 2010Applicant: ILLINOIS TOOL WORKS INC.Inventors: Robert G. Kobetsky, Daniel P. McDonald, Alan Varacins, David F. Hakala, Weijin Li
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Patent number: 7474508Abstract: A head gimbal assembly includes a slider and novel gimbal that may reduce crown sensitivity to temperature without substantially sacrificing the ability of a bond between the gimbal tongue and slider to resist applied forces and torques. The gimbal has a tongue that includes at least one weakening region. The weakening region extends more in a direction perpendicular to the length of the slider than it does in a direction parallel to the length of the slider. A bonding surface of the slider is attached to the tongue in a first bonding region that extends closer to a leading end of the slider than the weakening region does, and in a second bonding region that extends closer to a trailing end of the slider than the weakening region does. The gimbal can be used in a head gimbal assembly of a magnetic hard disk drive or other information storage device.Type: GrantFiled: March 9, 2005Date of Patent: January 6, 2009Assignee: Western Digital (Fremont), Inc.Inventors: Weijin Li, Martin J. McCaslin
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Patent number: 7095477Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.Type: GrantFiled: March 5, 2004Date of Patent: August 22, 2006Assignee: SiPix Imaging, Inc.Inventors: Rong-Chang Liang, Scott C. J. Tseng, Xuan Thanh Phan, Ying-Syi Li, Weijin Li
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Patent number: 7057857Abstract: A rotary microactuator-based head-gimbal assembly design controls the unwanted deflection of a flexure in a data storage device and eliminates hinge deformation. The head-gimbal assembly maintains the co-planarity of the hinged islands in the microactuator under the applied load acting on the flexure and two associated hinged islands. The dimple post is placed at the dimple loading region of the flexure tongue and has the same height as adhesive dams on paddles secured to the hinged islands. The dimple post is formed by branching one of the existing conductive traces covered by a photoresist layer to the dimple loading region on flexure tongue. In an alternative embodiment, the dimple post is secured to the dimple loading region of the flexure tongue by means of adhesives with a variety of viscosity and elastic moduli.Type: GrantFiled: December 20, 2002Date of Patent: June 6, 2006Assignee: Western Digital (Fremont), Inc.Inventors: Yimin Niu, Edmund Bruno Fanslau, Jr., Weijin Li
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Patent number: 6950266Abstract: A micro-actuator is comprised of a piezoelectric motor mounted on a flexure tongue with offsetting hinges, to perform a fine positioning of the magnetic read/write head. The substantial gain in the frequency response greatly improves the performance and accuracy of the track-follow control for fine positioning. The simplicity of the enhanced micro-actuator design results in a manufacturing efficiency that enables a high-volume, low-cost production. The micro-actuator is interposed between a flexure tongue and a slider to perform an active control of the fly height of the magnetic read/write head. The induced slider crown and camber are used to compensate for thermal expansion of the magnetic read/write head, which causes the slider to be displaced at an unintended fly height position relative to the surface of the magnetic recording disk. The enhanced micro-actuator design results in reduced altitude sensitivity, ABS tolerances, and reduced stiction.Type: GrantFiled: January 30, 2003Date of Patent: September 27, 2005Assignee: Western Digital (Fremont), Inc.Inventors: Martin John McCaslin, Kenneth Young, Weijin Li, Kah Yuen Kam, Yimin Niu
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Patent number: 6947258Abstract: An electrically conductive adhesive includes a resin component, a photoinitiator, and metal-coated polymer beads. The beads have an average diameter and a very narrow size distribution around the average diameter. The adhesive is applied between a read/write head and a suspension to attach the two, and the adhesive is cured by exposure to an illumination and/or heat. A pad spacer is included between the read/write head and the suspension to define a spacing and parallelism therebetween. The beads in the adhesive can form one or more layers between the read/write head and the suspension or can be disordered. The metal coating of the beads provide electrical conductivity between the read/write head and the suspension.Type: GrantFiled: June 19, 2002Date of Patent: September 20, 2005Assignee: Western Digital (Fremont), Inc.Inventor: Weijin Li
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Patent number: 6942824Abstract: An electrically conductive adhesive includes a resin component, a photoinitiator, and metal-coated polymer beads. The beads have an average diameter and a very narrow size distribution around the average diameter. The adhesive is applied between a read/write head and a suspension to attach the two, and the adhesive is cured by exposure to an illumination and/or heat. The beads in the adhesive can form a monolayer between the read/write head and the suspension such that a spacing therebetween is equal to the average diameter of the beads. The metal coating of the beads provide electrical conductivity between the read/write head and the suspension.Type: GrantFiled: May 22, 2002Date of Patent: September 13, 2005Assignee: Western Digital (Fremont), Inc.Inventor: Weijin Li
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Patent number: 6795138Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.Type: GrantFiled: January 11, 2001Date of Patent: September 21, 2004Assignee: SiPix Imaging, Inc.Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li
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Publication number: 20040169813Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.Type: ApplicationFiled: March 5, 2004Publication date: September 2, 2004Inventors: Rong-Chang Liang, Scott C.J. Tseng, Xuan Thanh Phan, Ying-Syi Li, Weijin Li