Patents by Inventor Qingxi Cai
Qingxi Cai 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: 11831165Abstract: A hierarchical control method for an island power grid energy storage system for increasing new energy generation fluctuation is disclosed. The method includes implementing a rolling dispatch method based on an idea of model predictive control; comprehensively considering a response capability of the energy storage system to grid-wide economic dispatch instructions and life loss of energy storage lithium batteries, and constructing an objective function of an intraday control model of the energy storage system with economic optimization; and constructing, on a basis of satisfying the objective function of the intraday control model, a real-time control model of the energy storage system and solving the model, and determining charge and discharge plans of a lithium battery energy storage system and a supercapacitor energy storage system.Type: GrantFiled: October 11, 2020Date of Patent: November 28, 2023Assignee: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. TAIZHOU POWER SUPPLY COMPANYInventors: Jian Yang, Jianhua Lv, Guode Ying, Zuofu Jiang, Xin Wang, Haohua Wu, Yongling Li, Jianjun Zhu, Daojian Hong, Haili Liang, Huiqi Chen, Qingxi Cai, Baorong Liu, Yiting Hu, Xingbai Wang, Chuhang Xu, Lijun Zhu, Qiang Gao, Xinghui Jiang, Xiaofei Wang, Yin Lin, Xun Ma
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Publication number: 20230208307Abstract: A frequency conversion power transmission system includes: a new energy power generation base, a first isolation device, a second isolation device, an alternating current-alternating current (AC-AC) frequency conversion device and a power transmission cable; the new energy power generation base is configured to supply electrical energy to an AC power grid, and operate at a constant voltage and a constant or variable frequency according to environmental conditions including weather, an environment or a distance; the first isolation device is connected to the new energy power generation base; the second isolation device is connected to the AC power grid; an input terminal of the AC-AC frequency conversion device is connected to the first isolation device, an output terminal of the AC-AC frequency conversion device is connected to the second isolation device, and the power transmission cable is configured to connect the new energy power generation base and the first isolation device.Type: ApplicationFiled: July 8, 2020Publication date: June 29, 2023Inventors: Jian YANG, Chen ZHOU, Zhanfeng DENG, Chi ZHANG, Zuofu JIANG, Guoliang ZHAO, Jianhua LV, Guode YING, Hongyang YU, Haohua WU, Jing GE, Yongling LI, Shaohua PAN, Qingxi CAI, Sanghong CHEN, Xin WANG, Yizhi ZHU, Chuhang XU, Xingbai WANG, Lijun ZHU, Xiaoyu XIANG, Baorong LIU, Xinghui JIANG, Linfeng GUAN, Yijun GUO
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Publication number: 20210376614Abstract: A hierarchical control method for an island power grid energy storage system for increasing new energy generation fluctuation is disclosed. The method includes implementing a rolling dispatch method based on an idea of model predictive control; comprehensively considering a response capability of the energy storage system to grid-wide economic dispatch instructions and life loss of energy storage lithium batteries, and constructing an objective function of an intraday control model of the energy storage system with economic optimization; and constructing, on a basis of satisfying the objective function of the intraday control model, a real-time control model of the energy storage system and solving the model, and determining charge and discharge plans of a lithium battery energy storage system and a supercapacitor energy storage system.Type: ApplicationFiled: October 11, 2020Publication date: December 2, 2021Inventors: Jian Yang, Jianhua Lv, Guode Ying, Zuofu Jiang, Xin Wang, Haohua Wu, Yongling Li, Jianjun Zhu, Daojian Hong, Haili Liang, Huiqi Chen, Qingxi Cai, Baorong Liu, Yiting Hu, Xingbai Wang, Chuhang Xu, Lijun Zhu, Qiang Gao, Xinghui Jiang, Xiaofei Wang, Yin Lin, Xun Ma
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Patent number: 10865074Abstract: An automatic handrail tensioning system and a method for adjusting the tension degree of a handrail, and belongs to the technical field of escalators. The automatic handrail tensioning system of the present invention comprises: a sensor for detecting information that can reflect a tension degree of the handrail; a controller for determining the tension degree information of the handrail according to the information detected by the sensor, and generating a corresponding control instruction for adjusting the tension degree of the handrail based on the tension degree information; and an actuator for driving a tensioning device to adjust the tension degree of the handrail based on the control instruction.Type: GrantFiled: September 17, 2019Date of Patent: December 15, 2020Assignee: OTIS ELEVATOR COMPANYInventors: QingXi Cai, JianGuo Li, Xin Wei, Jie Hu, LiFei Cheng, ZuAn Tang, Jun Ma
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Publication number: 20200087116Abstract: An automatic handrail tensioning system and a method for adjusting the tension degree of a handrail, and belongs to the technical field of escalators. The automatic handrail tensioning system of the present invention comprises: a sensor for detecting information that can reflect a tension degree of the handrail; a controller for determining the tension degree information of the handrail according to the information detected by the sensor, and generating a corresponding control instruction for adjusting the tension degree of the handrail based on the tension degree information; and an actuator for driving a tensioning device to adjust the tension degree of the handrail based on the control instruction.Type: ApplicationFiled: September 17, 2019Publication date: March 19, 2020Inventors: QingXi Cai, JianGuo Li, Xin Wei, Jie Hu, LiFei Cheng, ZuAn Tang, Jun Ma
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Patent number: 10427914Abstract: A synchronous door knife includes a track frame and a bottom plate, the back of the bottom plate is hinged with a stop arm, a transmission arm and a lock plate, a front end of the stop arm is provided with a guide wheel, upper and lower portions of the front of the bottom plate are respectively hinged with rotating arms, the upper rotating arm is linked with the transmission arm through a draw bar, one end of the rotating arms is hinged with a first blade, the other end is hinged with a movable plate, the movable plate is hinged with unlock rotating arms, one end of the unlock rotating arms is hinged with a second blade, and the other end abuts against the lock plate.Type: GrantFiled: January 12, 2016Date of Patent: October 1, 2019Assignee: OTIS ELEVATOR COMPANYInventors: XiaoBo Zhang, QingXi Cai, XiaoXiao Dong, Chong Chen
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Patent number: 10189680Abstract: The present invention relates to a landing-door door lock device. The following problem is solved: the position of a lock ball of a general landing-door door lock device is not adjustable, and adjustment is complicated when there is a deviation between positions of the lock ball and a door knife.Type: GrantFiled: November 13, 2015Date of Patent: January 29, 2019Assignee: OTIS ELEVATOR COMPANYInventors: Yongtao Yang, Huanfeng Liu, Chong Chen, Hua Zhang, QingXi Cai, Junfeng Wu
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Publication number: 20180265332Abstract: A synchronous door knife includes a track frame and a bottom plate, the back of the bottom plate is hinged with a stop arm, a transmission arm and a lock plate, a front end of the stop arm is provided with a guide wheel, upper and lower portions of the front of the bottom plate are respectively hinged with rotating arms, the upper rotating arm is linked with the transmission arm through a draw bar, one end of the rotating arms is hinged with a first blade, the other end is hinged with a movable plate, the movable plate is hinged with unlock rotating arms, one end of the unlock rotating arms is hinged with a second blade, and the other end abuts against the lock plate.Type: ApplicationFiled: January 12, 2016Publication date: September 20, 2018Applicant: Otis Elevator CompanyInventors: XiaoBo Zhang, QingXi Cai, XiaoXiao Dong, Chong Chen
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Patent number: 10040669Abstract: An asynchronous door knife comprises a track rack and a base plate; a dynamic blade and an unlocking blade which are connected on the front of the base plate in a swinging manner; a knife lifting ball which is arranged on the dynamic blade; a lock hook which is arranged on the back of the base plate and correspondingly buckled with a latch, wherein the unlocking blade is connected on the base plate through a lifting plate; the lifting plate is hinged on the base plate and comprises a first swing arm and a second swing arm; the first swing arm is hinged with the unlocking blade; the second swing arm is connected with an unlocking connecting rod; a lifting hole is additionally formed on the base plate; the middle of the lock hook is hinged with the unlocking connecting rod through the lifting hole.Type: GrantFiled: August 12, 2014Date of Patent: August 7, 2018Assignee: OTIS ELEVATOR COMPANYInventors: Xiaobo Zhang, Qingxi Cai, Xiaoxiao Dong, Minchao Chen, Senyuan Qiao
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Publication number: 20170267495Abstract: The present invention relates to a landing-door door lock device. The following problem is solved: the position of a lock ball of a general landing-door door lock device is not adjustable, and adjustment is complicated when there is a deviation between positions of the lock ball and a door knife.Type: ApplicationFiled: November 13, 2015Publication date: September 21, 2017Inventors: Yongtao Yang, Huanfeng Liu, Chong Chen, Hua Zhang, QingXi Cai, Junfeng Wu
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Publication number: 20160236907Abstract: An asynchronous door knife comprises a track rack and a base plate; a dynamic blade and an unlocking blade which are connected on the front of the base plate in a swinging manner; a knife lifting ball which is arranged on the dynamic blade; a lock hook which is arranged on the back of the base plate and correspondingly buckled with a latch, wherein the unlocking blade is connected on the base plate through a lifting plate; the lifting plate is hinged on the base plate and comprises a first swing arm and a second swing arm; the first swing arm is hinged with the unlocking blade; the second swing arm is connected with an unlocking connecting rod; a lifting hole is additionally formed on the base plate; the middle of the lock hook is hinged with the unlocking connecting rod through the lifting hole.Type: ApplicationFiled: August 12, 2014Publication date: August 18, 2016Inventors: Xiaobo Zhang, Qingxi Cai, Xiaoxiao Dong, Minchao Chen, Senyuan Qiao