Patents by Inventor Yadong Liu

Yadong 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).

  • Patent number: 12345921
    Abstract: The present invention provides a silicon-based integrated optical chip integrating a silicon-based optical modulator and a germanium-silicon detector and a preparation method thereof. A position and dimension of a silicon nitride waveguide are defined by a slot formed by using an etching process, then surplus silicon nitride is removed by means of chemico-mechanical polishing, and an optical waveguide is formed by the silicon nitride in the slot.
    Type: Grant
    Filed: November 8, 2022
    Date of Patent: July 1, 2025
    Assignee: SiFotonics Technologies (Beijing) Co., Ltd.
    Inventors: Yadong Liu, Pengfei Cai, Tzung-I Su
  • Publication number: 20250062341
    Abstract: In a battery recycling process, a recycling stream including charge material metals from exhausted Li-ion batteries is aggregated or otherwise comminuted to generate recycled battery charge material having comparable or improved cycle life as well as recycled charge material precursor having fewer cracking defects using doping substances in both a coprecipitation phase and a sintering phase of the recycling sequence. Prior to coprecipitation of a cathode material precursor, a leach solution of comingled charge material metals is produced, the ratio of the charge material metals is adjusted based on recycled battery specifications, and a relatively small quantity of a first dopant is added. The doped precursor, a lithium salt, and a second dopant are combined and sintered to form a doped cathode material having a single crystal morphology and a higher tap density than the doped cathode precursor.
    Type: Application
    Filed: November 7, 2024
    Publication date: February 20, 2025
    Inventors: Bohang Song, Eric Gratz, Yadong Liu, Dhiren Mistry, Jiyong Shin, Martha Monzon
  • Publication number: 20250054964
    Abstract: A Li-ion cathode material is prepared by a multi-stage lithiation process that separates a total amount of lithium called for by the recycled battery to be used in a series of sintering stages. A leaching, ratio adjustment and coprecipitation sequence forms a cathode precursor having a predetermined ratio of metallic elements from a comingled recycling stream of Li-ion batteries. The precursor is sintered with a lithium salt in a sequence of stages, each having a portion of the total lithium quantity, for a predetermined duration and temperature. The initial sintering stage tends to define the crystallinity of the resulting active cathode material and has a particle size determined at least in part by the portion of lithium at each stage.
    Type: Application
    Filed: August 7, 2023
    Publication date: February 13, 2025
    Inventors: Yadong Liu, Eric Gratz, Haixia Deng, Dhiren Mistry, Anil Parmar, Martha Monzon
  • Publication number: 20250051877
    Abstract: A curing process for cathode material alleviates surface defects on particles of the cathode material for improving battery performance. Heat treating a granular form of the cathode material in a flow of an oxygen-containing gas removes surface defects on the cathode material particles that have been mechanically deagglomerated. This results in significant improvement in both the rate of charge/discharge and the number of recharge cycles.
    Type: Application
    Filed: August 9, 2023
    Publication date: February 13, 2025
    Inventors: Yadong Liu, Eric Gratz, Haixia Deng, Dhiren Mistry, Anil Parmar, Martha Monzon
  • Patent number: 12206108
    Abstract: An improved nanocomposite cathode material for lithium-ion batteries and method of making the same. The nanocomposite cathode material includes lithium iron silicate based nanoparticles with a conductive matrix of graphene sheets. The nanoparticles may be doped with at least one anion or cation.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: January 21, 2025
    Assignee: The Trustees of Indiana University
    Inventors: Jian Xie, Yadong Liu
  • Publication number: 20250015359
    Abstract: An electrode assembly is a stacked structure. The electrode assembly includes a first electrode plate group and a second electrode plate group stacked up. A dimension of the first electrode plate group along the first direction is smaller than a dimension of the second electrode plate group along the first direction. A first step is formed at a minimum of one end of the electrode assembly along the first direction. A second step corresponding to the first step is formed on the shell.
    Type: Application
    Filed: July 3, 2024
    Publication date: January 9, 2025
    Applicant: Ningde Amperex Technology Limited
    Inventors: Qiang Lai, Yadong Liu
  • Patent number: 12104572
    Abstract: A semi-submersible floating wind power generator includes a wind power generator set, a post device, a load carrying device and a mooring device. The wind power generator set is disposed at a first end of the post device. The load carrying device is disposed at a second end of the post device. The mooring device is disposed at the second end of the post device. The post device includes a main post and multiple auxiliary posts. The main post is disposed in parallel with the multiple auxiliary posts, and second ends of the multiple auxiliary posts are aligned such that the second ends of the multiple auxiliary posts form a first plane, and the second end of the main post is disposed at a position closer to the first end of the main post than the first plane.
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: October 1, 2024
    Assignee: SHANGHAI JIAO TONG UNIVERSITY
    Inventors: Yanping He, Yongsheng Zhao, Zhe Chen, Yadong Liu, Chao Huang, Jie Yang, Haoyu Wu, Mingzhi Li, Xiaoli Gu
  • Publication number: 20240313283
    Abstract: A battery recycling process aggregates a recycling stream including charge material metals from exhausted Li-ion batteries and generates recycled battery charge material having comparable or improved cycle life as well as recycled charge material precursor having fewer cracking defects using doping substances in a coprecipitation phase in the recycling sequence. In a coprecipitation process, a solution of comingled charge material metals is produced, the ratio of the charge material metals is adjusted based on recycled battery specifications, and a relatively small quantity of a doping salt is added.
    Type: Application
    Filed: March 13, 2023
    Publication date: September 19, 2024
    Inventors: Yadong Liu, Haixia Deng, Eric Gratz, Dhiren Mistry, Anil Parmar
  • Publication number: 20240313212
    Abstract: A battery recycling process aggregates a recycling stream including charge material metals from exhausted Li-ion batteries and generates recycled battery charge material having comparable or improved cycle life as well as recycled charge material precursor having fewer cracking defects using doping substances in a coprecipitation phase in the recycling sequence. In a coprecipitation process, a solution of comingled charge material metals is produced, the ratio of the charge material metals is adjusted based on recycled battery specifications, and a relatively small quantity of a doping salt is added.
    Type: Application
    Filed: March 13, 2023
    Publication date: September 19, 2024
    Inventors: Yadong Liu, Haixia Deng, Eric Gratz, Dhiren Mistry, Anil Parmar
  • Publication number: 20240287645
    Abstract: A recycling process for Lithium-ion (Li-ion) batteries includes a selective leach of charge material metals followed by impurity control for effecting microstructures such as a pore volume and surface area for optimal structures and charge performance. Particle characteristics having a favorable effect on performance correlate with soluble impurities in a recycling leach solution formed from spent charge material in a battery recycling stream. Spent batteries yield a black mass of agitated, comingled cathode material, anode material and current collectors. Leaching of the black mass yields a recycling solution of charge material metals and impurities. Selective adjustment of these impurities through adding and/or separating soluble ions in the solution drives formation of internal voids, surface area and pore volume in the resulting cathode material.
    Type: Application
    Filed: February 23, 2023
    Publication date: August 29, 2024
    Inventors: Yadong Liu, Haixia Deng, Eric Gratz, Dhiren Mistry, Anil Parmar
  • Patent number: 12067728
    Abstract: A heterogeneous image registration method includes: performing edge detection on collected images, in combination with a curvature scale space strategy to extract contour curved segments in an edge image. Implementing a feature point detection strategy based on global and local curvature detecting feature points in the contour curved segments, and obtaining the nearest minimum local curvature of the feature points pointing to starting and end points of the contour, respectively. Calculating the number of neighborhood sampling points and neighborhood auxiliary feature points of neighborhoods on both edges of each of the feature points according to the nearest minimum local curvature. Using neighborhood auxiliary feature points and feature points to form a feature triangle, calculating an angle bisector vector and a main direction corresponding to the feature point in the feature triangle.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: August 20, 2024
    Assignee: Shanghai Jiaotong University
    Inventors: Yadong Liu, Yingjie Yan, Qian Jiang, Ling Pei, Zhe Li, Peng Xu, Lei Su, Xiaofei Fu, Xiuchen Jiang
  • Patent number: 12040481
    Abstract: An improved nanocomposite cathode material for lithium-ion batteries comprising vanadium pentoxide substrates with a conductive matrix of graphene sheets and a network former such as silicon dioxide and a method of making the same.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: July 16, 2024
    Assignee: The Trustees of Indiana University
    Inventors: Jian Xie, Yadong Liu
  • Publication number: 20240151899
    Abstract: The present invention provides a silicon-based integrated optical chip integrating a silicon-based optical modulator and a germanium-silicon detector and a preparation method thereof. A position and dimension of a silicon nitride waveguide are defined by a slot formed by using an etching process, then surplus silicon nitride is removed by means of chemico-mechanical polishing, and an optical waveguide is formed by the silicon nitride in the slot.
    Type: Application
    Filed: November 8, 2022
    Publication date: May 9, 2024
    Inventors: Yadong Liu, Pengfei Cai, Tzung-I Su
  • Patent number: 11881015
    Abstract: The present invention provides a high-precision identification method and system for substations, including building a Mask RCNN objection recognition network model based on convolutional neural networks; inputting acquired image information of a object into the Mask RCNN object recognition network model for preliminary recognition and outputting a recognition result of the object; using an information entropy to create a semantic decision tree and correcting the recognition result of the object according to a principle of relative correlation between different objects and outputting a final recognition decision result; reading the recognition decision result to obtain a true type of the object to be recognized. The present invention greatly improves the accuracy of image recognition of substations, and has a positive role in the research and development of automatic inspection equipment for inspection robots.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: January 23, 2024
    Assignee: Shanghai Jiaotong University
    Inventors: Yadong Liu, Yingjie Yan, Siheng Xiong, Ling Pei, Zhe Li, Peng Xu, Lei Su, Xiaofei Fu, Xiuchen Jiang
  • Patent number: 11810348
    Abstract: The present disclosure provide a method for identifying power equipment targets based on human-level concept learning, including: creating a dataset of power equipment images, and annotating power equipment in power equipment images; training neural network and Bayesian network with the annotated dataset and respectively acquire identification results and conditional probabilities; calculating probabilities of unions with the conditional probabilities; and filtering the identification result corresponding to the highest probability of the union as identification result of the dataset of the power equipment images and complete the identification of the power equipment. The present disclosure combines Mask R-CNN and probabilistic graphical model. The bottom layer uses Mask R-CNN, and the top layer uses Bayesian network to train in identifying power equipment images, so that a small amount of data samples can achieve good recognition, which improved the performance of Mask R-CNN model.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: November 7, 2023
    Assignee: Shanghai Jiaotong University
    Inventors: Yadong Liu, Yingjie Yan, Siheng Xiong, Ling Pei, Zhe Li, Peng Xu, Lei Su, Xiaofei Fu, Xiuchen Jiang
  • Publication number: 20220343642
    Abstract: The present invention provides a high-precision identification method and system for substations, including building a Mask RCNN objection recognition network model based on convolutional neural networks; inputting acquired image information of a object into the Mask RCNN object recognition network model for preliminary recognition and outputting a recognition result of the object; using an information entropy to create a semantic decision tree and correcting the recognition result of the object according to a principle of relative correlation between different objects and outputting a final recognition decision result; reading the recognition decision result to obtain a true type of the object to be recognized.
    Type: Application
    Filed: June 8, 2020
    Publication date: October 27, 2022
    Inventors: Yadong LIU, Yingjie YAN, Siheng XIONG, Ling PEI, Zhe LI, Peng XU, Lei SU, Xiaofei FU, Xiuchen JIANG
  • Patent number: 11480817
    Abstract: Various embodiments of a coplanar waveguide (CPW) transmission line as well as a silicon-based electro-optic (E-O) modulator comprising the CPW transmission line are described. The CPW transmission line has a curved or winding shape. The silicon-based E-O modulator includes a rib optical waveguide, a beam splitter, a beam combiner, and a CPW transmission line that exhibits the winding shape. At least one of the two optical arms of the rib optical waveguide alternately and periodically extends through a first groove and a second groove of the CPW transmission line. The plurality of active sections of the rib optical waveguide are evenly distributed on both sides of the CPW transmission line to suppress undesired transmission modes. An increased length of transmission path of the rib optical waveguide is also avoided or minimized, thereby reducing the transmission speed mismatch of the E-O modulator, which is essential for achieving high-speed operation.
    Type: Grant
    Filed: March 6, 2021
    Date of Patent: October 25, 2022
    Inventors: Yadong Liu, Pengfei Cai, Tzung-I Su, Dong Pan
  • Publication number: 20220319011
    Abstract: A heterogeneous image registration method includes: performing edge detection on collected images, in combination with a curvature scale space strategy to extract contour curved segments in an edge image. Implementing a feature point detection strategy based on global and local curvature detecting feature points in the contour curved segments, and obtaining the nearest minimum local curvature of the feature points pointing to starting and end points of the contour, respectively. Calculating the number of neighborhood sampling points and neighborhood auxiliary feature points of neighborhoods on both edges of each of the feature points according to the nearest minimum local curvature. Using neighborhood auxiliary feature points and feature points to form a feature triangle, calculating an angle bisector vector and a main direction corresponding to the feature point in the feature triangle.
    Type: Application
    Filed: June 8, 2020
    Publication date: October 6, 2022
    Inventors: Yadong LIU, Yingjie YAN, Qian JIANG, Ling PEI, Zhe LI, Peng XU, Lei SU, Xiaofei FU, Xiuchen JIANG
  • Publication number: 20220149372
    Abstract: An improved nanocomposite cathode material for lithium-ion batteries and method of making the same. The nanocomposite cathode material includes lithium iron silicate based nanoparticles with a conductive matrix of graphene sheets. The nanoparticles may be doped with at least one anion or cation.
    Type: Application
    Filed: March 5, 2020
    Publication date: May 12, 2022
    Inventors: Jian Xie, Yadong Liu
  • Publication number: 20220128035
    Abstract: A semi-submersible floating wind power generator includes a wind power generator set, a post device, a load carrying device and a mooring device. The wind power generator set is disposed at a first end of the post device. The load carrying device is disposed at a second end of the post device. The mooring device is disposed at the second end of the post device. The post device includes a main post and multiple auxiliary posts. The main post is disposed in parallel with the multiple auxiliary posts, and second ends of the multiple auxiliary posts are aligned such that the second ends of the multiple auxiliary posts form a first plane, and the second end of the main post is disposed at a position closer to the first end of the main post than the first plane.
    Type: Application
    Filed: December 2, 2021
    Publication date: April 28, 2022
    Applicant: SHANGHAI JIAO TONG UNIVERSITY
    Inventors: Yanping HE, Yongsheng ZHAO, Zhe CHEN, Yadong LIU, Chao HUANG, Jie YANG, Haoyu WU, Mingzhi LI, Xiaoli GU