Patents by Inventor XIAOBIN DONG

XIAOBIN DONG 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).

  • Publication number: 20240099066
    Abstract: Disclosed are a display substrate. The display substrate includes a drive backplane; a first electrode layer disposed on a side of the drive backplane; a pixel definition layer disposed on a side, distal to the drive backplane, of the first electrode layer; an organic light-emitting layer disposed on a side, distal to the drive backplane, of the pixel definition layer, wherein the organic light-emitting layer comprises: a plurality of organic material layers stacked in a direction perpendicular to and away from the drive backplane, and a portion of the organic material layer disposed inside the partition groove is separated from a portion of the organic material layer disposed outside the partition groove; and a second electrode layer disposed on a side, distal to the drive backplane, of the organic light-emitting layer.
    Type: Application
    Filed: May 31, 2022
    Publication date: March 21, 2024
    Applicants: Yunnan Invensight Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yuhao LEE, Xue DONG, Xiaochuan CHEN, Hui TONG, Xiaobin SHEN, Kuanta HUANG, Cao WU, Weiliang BU, Hui WANG, Zhiqiang JIAO
  • Patent number: 11901557
    Abstract: The present application discloses a negative electrode active material and a method for preparing the same, a secondary battery, and an apparatus including the secondary battery. The negative electrode active material includes a core and a coating layer covering the surface of the core, the core includes artificial graphite, the coating layer includes amorphous carbon, and the particle size uniformity of the negative electrode active material is from 0.25 to 0.45.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: February 13, 2024
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Meng Kang, Xiaobin Dong, Jiazheng Wang, Libing He
  • Patent number: 11901546
    Abstract: The present application relates to a secondary battery, a process for preparing the same and an apparatus containing the secondary battery.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: February 13, 2024
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Meng Kang, Jiazheng Wang, Xiaobin Dong, Libing He
  • Publication number: 20230282829
    Abstract: An artificial graphite and preparation method thereof, negative electrode plates, secondary batteries, battery modules, battery packs, and electrical device are provided. In some embodiments, the artificial graphite has a particle size of Dv5016 ?m and an air oxidation peak temperature Tpeak of 830° C., wherein the air oxidation peak temperature Tpeak of artificial graphite refers to the highest peak temperature of a differential thermo-gravimetric analysis curve obtained when the artificial graphite is subjected to a thermo-gravimetric test having a weighing mass of 10±0.05 mg, with a purging gas of air, an airflow rate of 60 mL/min, and a heating rate of 5° C./min, in a test temperature range of 40° C. to 950° C. By the present application, the resulting secondary batteries have higher first-cycle Coulomb efficiency and longer cycle life under the premise of good fast charging performance.
    Type: Application
    Filed: February 27, 2023
    Publication date: September 7, 2023
    Inventors: Xiaobin Dong, Jiazheng Wang
  • Publication number: 20230253562
    Abstract: This application relates to a secondary battery, a process for preparing the same and an apparatus containing the secondary battery. In particular, the negative electrode plate comprises a negative current collector and a negative electrode film, wherein the negative electrode film comprises a first negative electrode film and a second negative electrode film, the first negative electrode film is comprises a first negative electrode active material, and the particle size uniformity of the first negative electrode active material is from 0.4 to 0.6; the second negative electrode film comprises a second negative electrode active material, and the particle size uniformity of the second negative electrode active material is from 0.25 to 0.45, and a ratio of the particle size uniformity of the first negative electrode active material to the particle size uniformity of the second negative electrode active material is from 1.05 to 1.9.
    Type: Application
    Filed: March 31, 2023
    Publication date: August 10, 2023
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Meng KANG, Jiazheng WANG, Xiaobin Dong, Libing HE
  • Patent number: 11682788
    Abstract: Embodiments provide a secondary battery and an apparatus containing the secondary battery. The secondary battery includes a negative electrode plate. The negative electrode plate includes a copper-based current collector and a negative electrode film layer disposed on at least one surface of the copper-based current collector and including a negative electrode active material, and the negative electrode active material includes graphite. The negative electrode plate satisfies Tx?25, where Tx is as defined in the specification.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: June 20, 2023
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Xiaobin Dong, Jiazheng Wang, Meng Kang, Libing He
  • Patent number: 11658335
    Abstract: Embodiments provide a secondary battery and a preparation method thereof, and a battery module, battery pack, and apparatus containing such secondary battery. In those embodiments, a negative electrode plate includes a negative-electrode current collector and a negative-electrode film layer that is disposed on at least one surface of the negative-electrode current collector and that includes a negative-electrode active material. The negative-electrode active material contains graphite, and the negative electrode plate satisfies that, when the negative electrode plate and a lithium metal sheet constitute a button battery which is discharged to 5.0 mV at 0.05 C, a capacity increment curve V-dQ/dV of the button battery has a third-order lithiation phase transition peak of graphite at position 0.055V-0.085V.
    Type: Grant
    Filed: July 4, 2022
    Date of Patent: May 23, 2023
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Meng Kang, Xiaobin Dong, Jiazheng Wang, Libing He
  • Patent number: 11646416
    Abstract: This application relates to a secondary battery, a process for preparing the same and an apparatus containing the secondary battery. In particular, the negative electrode plate comprises a negative current collector and a negative electrode film, wherein the negative electrode film comprises a first negative electrode film and a second negative electrode film, the first negative electrode film is disposed on at least one surface of the negative current collector and comprises a first negative electrode active material, the first negative electrode active material comprises graphite, and the particle size uniformity of the first negative electrode active material is from 0.4 to 0.6; the second negative electrode film is disposed on the first negative electrode film and comprises a second negative electrode active material, the second negative electrode active material comprises artificial graphite, and the particle size uniformity of the second negative electrode active material is from 0.25 to 0.45.
    Type: Grant
    Filed: December 31, 2021
    Date of Patent: May 9, 2023
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Meng Kang, Jiazheng Wang, Xiaobin Dong, Libing He
  • Patent number: 11569498
    Abstract: The present application discloses a negative electrode active material and a method for preparation thereof, a secondary battery, and an apparatus including the secondary battery. The negative electrode active material includes a core and a coating layer covering a surface of the core, the core includes artificial graphite, the coating layer includes amorphous carbon, the negative electrode active material has a surface area average particle size D(3,2) denoted as A, the negative electrode active material has a surface area average particle size D(3,2) denoted as B after powder compaction under a pressure of 20 kN, and the negative electrode active material satisfies: 72%?B/A×100%?82%.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: January 31, 2023
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Jiazheng Wang, Xiaobin Dong, Libing He
  • Publication number: 20220336845
    Abstract: Embodiments provide a secondary battery and an apparatus containing the secondary battery. The secondary battery includes a negative electrode plate. The negative electrode plate includes a copper-based current collector and a negative electrode film layer disposed on at least one surface of the copper-based current collector and including a negative electrode active material, and the negative electrode active material includes graphite. The negative electrode plate satisfies Tx?25, where Tx is as defined in the specification.
    Type: Application
    Filed: July 5, 2022
    Publication date: October 20, 2022
    Inventors: Xiaobin Dong, Jiazheng Wang, Meng Kang, Libing He
  • Publication number: 20220336844
    Abstract: Embodiments provide a secondary battery and a preparation method thereof, and a battery module, battery pack, and apparatus containing such secondary battery. In those embodiments, a negative electrode plate includes a negative-electrode current collector and a negative-electrode film layer that is disposed on at least one surface of the negative-electrode current collector and that includes a negative-electrode active material. The negative-electrode active material contains graphite, and the negative electrode plate satisfies that, when the negative electrode plate and a lithium metal sheet constitute a button battery which is discharged to 5.0 mV at 0.05C, a capacity increment curve V-dQ/dV of the button battery has a third-order lithiation phase transition peak of graphite at position 0.055V-0.085V.
    Type: Application
    Filed: July 4, 2022
    Publication date: October 20, 2022
    Inventors: Meng Kang, Xiaobin Dong, Jiazheng Wang, Libing He
  • Publication number: 20220166009
    Abstract: The present application discloses a negative electrode active material and a method for preparation thereof, a secondary battery, and an apparatus including the secondary battery. The negative electrode active material includes a core and a coating layer covering a surface of the core, the core includes artificial graphite, the coating layer includes amorphous carbon, the negative electrode active material has a surface area average particle size D(3,2) denoted as A, the negative electrode active material has a surface area average particle size D(3,2) denoted as B after powder compaction under a pressure of 20 kN, and the negative electrode active material satisfies: 72%?B/A×100%?82%.
    Type: Application
    Filed: December 10, 2021
    Publication date: May 26, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Jiazheng Wang, Xiaobin Dong, Libing He
  • Publication number: 20220123287
    Abstract: The present application relates to a secondary battery, a process for preparing the same and an apparatus containing the secondary battery.
    Type: Application
    Filed: December 31, 2021
    Publication date: April 21, 2022
    Applicant: Contemporay Amperex Technology Co., Limited
    Inventors: Jiazheng Wang, Meng Kang, Xiaobin Dong, Yuliang Shen, Libing He
  • Publication number: 20220123306
    Abstract: This application relates to a secondary battery, a process for preparing the same and an apparatus containing the secondary battery. In particular, the negative electrode plate comprises a negative current collector and a negative electrode film, wherein the negative electrode film comprises a first negative electrode film and a second negative electrode film, the first negative electrode film is disposed on at least one surface of the negative current collector and comprises a first negative electrode active material, the first negative electrode active material comprises graphite, and the particle size uniformity of the first negative electrode active material is from 0.4 to 0.6; the second negative electrode film is disposed on the first negative electrode film and comprises a second negative electrode active material, the second negative electrode active material comprises artificial graphite, and the particle size uniformity of the second negative electrode active material is from 0.25 to 0.45.
    Type: Application
    Filed: December 31, 2021
    Publication date: April 21, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Meng KANG, Jiazheng Wang, Xiaobin Dong, Libing He
  • Publication number: 20220102701
    Abstract: The present application relates to a secondary battery, a process for preparing the same and an apparatus containing the secondary battery.
    Type: Application
    Filed: December 10, 2021
    Publication date: March 31, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Meng KANG, Jiazheng Wang, Xiaobin Dong, Libing He
  • Publication number: 20220102788
    Abstract: This application discloses a secondary battery and an apparatus containing the secondary battery. The secondary battery secondary battery includes an electrode assembly including a cell and tabs extending from the cell, the cell includes a negative electrode plate, the negative electrode plate includes a negative current collector and a negative electrode film arranged on at least one surfaces of the negative current collector and including a negative active material, wherein the negative active material includes artificial graphite including secondary particles; and the cell satisfies 5 cm?0.5×?{square root over (a2+b2)}?15 cm, and a?15 cm, wherein a is the maximum size of the cell in the direction that the tabs extend, in cm; and b is the maximum size of the cell in a direction perpendicularly intersecting with the direction that the tabs extend, in cm.
    Type: Application
    Filed: December 8, 2021
    Publication date: March 31, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Xiaobin Dong, Jiazheng Wang, Meng Kang, Libing He
  • Publication number: 20220102711
    Abstract: The present application discloses a negative electrode active material and a method for preparing the same, a secondary battery, and an apparatus including the secondary battery. The negative electrode active material includes a core and a coating layer covering the surface of the core, the core includes artificial graphite, the coating layer includes amorphous carbon, and the particle size uniformity of the negative electrode active material is from 0.25 to 0.45.
    Type: Application
    Filed: December 10, 2021
    Publication date: March 31, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Meng KANG, Xiaobin DONG, Jiazheng WANG, Libing HE
  • Patent number: 11237215
    Abstract: The present application provides a method for determining fast charge performance of a negative electrode plate and a method for designing a negative electrode plate. By utilizing the method(s) according to the present application, the charging speed of a negative electrode plate can be quickly evaluated and the design period of a negative electrode plate in a fast charge battery can be greatly shortened.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: February 1, 2022
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Jiazheng Wang, Meng Kang, Xiaobin Dong, Yuliang Shen, Libing He
  • Publication number: 20210336244
    Abstract: This application relates to a secondary battery and an apparatus including the secondary battery. Specifically, the secondary battery of this application includes a negative electrode plate, where the negative electrode plate includes a negative current collector and negative film layers where the negative film layers include a first negative film layer and a second negative film layer, the first negative film layer is disposed on at least one surface of the negative current collector and includes a first negative active material, and the second negative film layer is disposed on the first negative film layer and includes a second negative active material; the first negative active material includes natural graphite, and the second negative active material includes artificial graphite; the first negative active material satisties 4.0?COI1?7.0; and the second negative active material satisties 2.2?COI2?4.2.
    Type: Application
    Filed: December 6, 2019
    Publication date: October 28, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Meng KANG, Xiaobin DONG, Jiazheng WANG, Libing HE
  • Publication number: 20210055349
    Abstract: The present application provides a method for determining fast charge performance of a negative electrode plate and a method for designing a negative electrode plate. By utilizing the method(s) according to the present application, the charging speed of a negative electrode plate can be quickly evaluated and the design period of a negative electrode plate in a fast charge battery can be greatly shortened.
    Type: Application
    Filed: March 11, 2020
    Publication date: February 25, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Jiazheng Wang, Meng Kang, Xiaobin Dong, Yuliang Shen, Libing He