Patents by Inventor Yuzhen Zhao

Yuzhen Zhao 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: 20250246693
    Abstract: This application provides a secondary battery, a battery module, a battery pack, and an electrical device. The secondary battery includes a positive electrode plate and an electrolyte solution. The electrolyte solution contains a film-forming additive. A film resistance x? of the positive electrode plate and a mass percent y % of the film-forming additive based on a total mass of the electrolyte solution satisfy: x×y?25. The film resistance and the film-forming additive of the secondary battery provided in this application satisfy the above relationship. Regulating the film resistance and the film-forming additive of the secondary battery as disclosed enhances the Coulombic efficiency, high-temperature cycle performance, and high-temperature storage performance of the battery.
    Type: Application
    Filed: April 18, 2025
    Publication date: July 31, 2025
    Inventors: Meng Qin, Yingjie Guan, Yuzhen Zhao, Huiling Yang, Yan Wen, Qisen Huang
  • Patent number: 12365594
    Abstract: The present application discloses a silicon-oxygen compound, a method for preparation thereof, and a secondary battery, a battery module, a battery pack and an apparatus related thereto. The silicon-oxygen compound includes both manganese element and a copper element, a content of the manganese element is from 20 ppm to 500 ppm, and a mass ratio of the manganese element to the copper element is from 1 to 18.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: July 22, 2025
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Chengdu Liang, Yingjie Guan, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Publication number: 20250125374
    Abstract: The present application relates to a sodium-ion battery and an electrical apparatus including the same. The sodium-ion battery includes a positive electrode sheet, a separator, and a negative electrode current collector, wherein the separator is disposed between the positive electrode sheet and the negative electrode current collector, a surface of the negative electrode current collector is provided with a protective layer capable of allowing sodium-ions to pass freely, a material of the protective layer mainly includes a polymer material, there is an accommodation area between the protective layer and the negative electrode current collector, and the accommodation area has a sodium metal layer formed on the surface of the negative electrode current collector. The sodium-ion battery can effectively improve the inhibition of sodium dendrites, reduce side reactions between sodium metal and an electrolyte solution, and improve the cycle performance of the sodium-ion battery.
    Type: Application
    Filed: December 12, 2024
    Publication date: April 17, 2025
    Inventors: Meng Qin, Yingjie Guan, Huiling Yang, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Publication number: 20250112242
    Abstract: This application relates to a sodium-ion battery and an electric apparatus containing the same. The sodium-ion battery includes a positive electrode plate, a separator, and a negative electrode current collector. The separator is disposed between the positive electrode plate and the negative electrode current collector. A coating is provided on a surface of the negative electrode current collector, the coating includes a carbon material, and the carbon material includes carbon nanotubes. The sodium-ion battery can effectively enhance the suppression of sodium dendrites and improve the cycling performance. In addition, it is unnecessary to additionally provide a negative electrode active material layer, reducing the costs of the sodium-ion battery and improving the energy density of the sodium-ion battery.
    Type: Application
    Filed: December 12, 2024
    Publication date: April 3, 2025
    Inventors: Meng Qin, Yingjie Guan, Huiling Yang, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Publication number: 20250096325
    Abstract: This application provides an electrolyte, a sodium-ion battery, a battery module, a battery pack, and an electric apparatus. The electrolyte includes a sodium salt and an organic solvent. The organic solvent includes a fluorinated organic substance, an ether organic substance, and a coordinating organic substance, where the coordinating organic substance includes a plurality of functional groups capable of coordinating with transition metal. The electrolyte provided in this application can improve cycling performance of sodium-ion batteries in high-temperature environments.
    Type: Application
    Filed: November 28, 2024
    Publication date: March 20, 2025
    Inventors: Meng Qin, Yingjie Guan, Huiling Yang, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Publication number: 20250079467
    Abstract: Provided are a positive electrode material composition, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode material composition comprises a positive electrode active material with a core-shell structure and an organopolysiloxane compound, wherein said core comprises Li1+xMn1-yAyP1-zRzO4; and said shell comprises a first cladding layer covering said core and a second cladding layer covering said first cladding layer. The positive electrode material composition of the present application enables the secondary battery to have a higher energy density, while having improved cycle performance, safety performance and/or rate performance.
    Type: Application
    Filed: October 12, 2024
    Publication date: March 6, 2025
    Inventors: Qingyan Ma, Yuzhen Zhao, Yingjie Guan, Yan Wen, Qisen Huang
  • Publication number: 20250079521
    Abstract: This application provides a sodium-ion battery electrolytic solution. The electrolytic solution includes an ether compound as a solvent, a sodium borate compound as a sodium salt, and a borate ester compound as an additive, and a percentage of the ether compound in a total solvent of the electrolytic solution is 50 wt % or above. The electrolytic solution can inhibit battery volume expansion and sodium dendrite growing. This application further provides a sodium-ion battery including the electrolytic solution, a battery module, a battery pack, and an electrical device.
    Type: Application
    Filed: November 20, 2024
    Publication date: March 6, 2025
    Inventors: Meng Qin, Yingjie Guan, Qingyan Ma, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Publication number: 20250079520
    Abstract: The present application provides an electrolyte solution for a sodium-ion battery, comprising a sodium salt of formula NaBOaFxRy?z, a fluoroalkyl ether, and other ethers except for the fluoroalkyl ether, wherein a, x, y, and z are as defined in the specification. The electrolyte solution according to the present application has good stability, particularly oxidation resistance and good solvability of sodium ions, thus broadening an electrochemical window of a corresponding sodium-ion battery, enhancing coulombic efficiency, and improving cycling performance and safety performance. The present application further provides a secondary battery, a battery module, a battery pack, and an electrical apparatus using the electrolyte solution for a sodium-ion battery.
    Type: Application
    Filed: November 20, 2024
    Publication date: March 6, 2025
    Inventors: Meng Qin, Yingjie Guan, Qingyan Ma, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Patent number: 12230791
    Abstract: Provided are a positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode active material has a core-shell structure, comprising a core and a shell cladding the core, wherein the core has a chemical formula of Li1+xMn1-yAyP1-zRzO4, the shell comprises a first cladding layer cladding the core, a second cladding layer cladding the first cladding layer, a third cladding layer cladding the second cladding layer and a fourth cladding layer cladding the third cladding layer. The positive electrode active material of the present application enables the secondary battery to have a relatively high energy density, and good cycling performance, rate performance and safety performance.
    Type: Grant
    Filed: May 20, 2024
    Date of Patent: February 18, 2025
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Qingyan Ma, Yan Wen, Yingjie Guan, Yuzhen Zhao, Qisen Huang
  • Patent number: 12224434
    Abstract: The present application provide a silicon-oxygen compound, a preparation method thereof and related secondary battery, battery module, battery pack, and device. The silicon-oxygen compound provided by the present application has a formula of SiOx, in which x satisfies 0<x<2. The silicon-oxygen compound contains both sulfur and manganese element, and the sulfur element is present in an amount of 20 ppm˜300 ppm. The mass ratio of sulfur element to manganese element is from 1.5 to 10.
    Type: Grant
    Filed: January 3, 2021
    Date of Patent: February 11, 2025
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Chengdu Liang, Yingjie Guan, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Patent number: 12187614
    Abstract: The present application discloses a composite graphite material and a method for preparing the same, a secondary battery, and an apparatus. The composite graphite material includes a core material and a coating layer that coats at least a portion of the surface of the core material, the core material including graphite, and the coating layer including a coating material containing a cyclic structure moiety, wherein the composite graphite material has a weight-loss rate of from 0.1% to 0.55% when the composite graphite material is heated in an atmosphere of an inert non-oxidative gas at a temperature rising from 40° C. to 800° C. The composite graphite material can enhance the gram capability and reduce the expansion rate of an electrode plate, and more preferably, can improve the cycle performance and kinetic performance of a battery as well.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: January 7, 2025
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Chengdu Liang, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Publication number: 20240396025
    Abstract: Provided are a positive electrode material composition, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode material composition comprises a positive electrode active material with a core-shell structure and an organopolysiloxane compound, wherein the positive electrode active material comprises a core and a shell covering the core, wherein the core has a chemical formula of Li1+xMn1?yAyP1?zRzO4, and the shell comprises a first cladding layer covering the core, a second cladding layer covering the first cladding layer, and a third cladding layer covering the second cladding layer. The positive electrode material composition of the present application enables the secondary battery to have a relatively high energy density, while further improving cycling performance safety performance and/or rate performance of the secondary battery.
    Type: Application
    Filed: August 2, 2024
    Publication date: November 28, 2024
    Inventors: Qingyan Ma, Yingjie Guan, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Publication number: 20240372087
    Abstract: The present application provides a positive electrode material composition, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode material composition includes a positive electrode active material and an organopolysiloxane compound, wherein said positive electrode active material has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn. The positive electrode material composition of the present application enables the secondary battery to have a relatively high energy density, while further improving rate performance, cycling performance and/or high-temperature stability of the secondary battery.
    Type: Application
    Filed: July 12, 2024
    Publication date: November 7, 2024
    Inventors: Qingyan Ma, Yan Wen, Yuzhen Zhao, Yingjie Guan, Qisen Huang
  • Publication number: 20240332515
    Abstract: Provided are a positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode active material has a core-shell structure, including a core and a shell cladding the core, wherein the core includes Li1+xMn1?yAyP1?zRzO4, the shell includes a first cladding layer cladding the core, a second cladding layer cladding the first cladding layer and a third cladding layer cladding the second cladding layer. The positive electrode active material of the present application enables the secondary battery to have a relatively high energy density, and good rate performance, cycling performance and safety performance.
    Type: Application
    Filed: June 11, 2024
    Publication date: October 3, 2024
    Inventors: Qingyan Ma, Yan Wen, Yuzhen Zhao, Yingjie Guan, Qisen Huang
  • Patent number: 12100834
    Abstract: A positive electrode active material, a method for preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same are provided. The positive electrode active material has a core-shell structure, comprising a core, a first cladding layer covering the core, a second cladding layer covering the first cladding layer, wherein the core has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn, the first cladding layer comprises a first polymer containing an electron withdrawing group, the second cladding layer comprises a second polymer, and wherein the second polymer comprises one or more of plant polysaccharides, marine polysaccharides and the derivatives thereof. The positive electrode active material of the present application enables a secondary battery to have a relatively high energy density, while further having a significantly improved rate performance, cycling performance and/or high-temperature stability.
    Type: Grant
    Filed: March 25, 2024
    Date of Patent: September 24, 2024
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Qingyan Ma, Yingjie Guan, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Publication number: 20240304798
    Abstract: Provided are a positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode active material has a core-shell structure, comprising a core and a shell cladding the core, wherein the core has a chemical formula of Li1+xMn1-yAyP1-zRzO4, the shell comprises a first cladding layer cladding the core, a second cladding layer cladding the first cladding layer, a third cladding layer cladding the second cladding layer and a fourth cladding layer cladding the third cladding layer. The positive electrode active material of the present application enables the secondary battery to have a relatively high energy density, and good cycling performance, rate performance and safety performance.
    Type: Application
    Filed: May 20, 2024
    Publication date: September 12, 2024
    Inventors: Qingyan Ma, Yan Wen, Yingjie Guan, Yuzhen Zhao, Qisen Huang
  • Publication number: 20240266516
    Abstract: A positive electrode active material, a method for preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same are provided. The positive electrode active material has a core-shell structure, comprising a core, a first cladding layer covering the core, a second cladding layer covering the first cladding layer, wherein the core has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn, the first cladding layer comprises a first polymer containing an electron withdrawing group, the second cladding layer comprises a second polymer, and wherein the second polymer comprises one or more of plant polysaccharides, marine polysaccharides and the derivatives thereof. The positive electrode active material of the present application enables a secondary battery to have a relatively high energy density, while further having a significantly improved rate performance, cycling performance and/or high-temperature stability.
    Type: Application
    Filed: March 25, 2024
    Publication date: August 8, 2024
    Inventors: Qingyan Ma, Yingjie Guan, Yuzhen Zhao, Yan Wen, Qisen Huang
  • Publication number: 20240239685
    Abstract: A positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same are provided. The positive electrode active material has a core-shell structure, comprising a core and a cladding layer covering at least a portion of said core, wherein said core has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn, said cladding layer comprises a polymer containing an electron withdrawing group. The positive electrode active material of the present application enables a secondary battery to have a relatively high energy density, while further having a significantly improved rate performance, cycling performance and/or high-temperature stability.
    Type: Application
    Filed: February 22, 2024
    Publication date: July 18, 2024
    Inventors: Qingyan Ma, Yuzhen Zhao, Yingjie Guan, Yan Wen, Qisen Huang
  • Patent number: 11996548
    Abstract: The present application discloses a negative active material, preparation process thereof and a secondary battery and the related battery module, battery pack and device. The negative active material comprises a core structure and a modified polymer coating layer coated on at least a part of the outer surface of the core structure, wherein the core structure comprises one or more of silicon-based materials and tin based materials; and wherein the negative active material has an infrared spectrum comprising an infrared absorption peak at the wavelength of 1450 cm?1 to 1690 cm?1, and the infrared absorption peak has a transmittance T that satisfies 80%?T?99%.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: May 28, 2024
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Yuzhen Zhao, Yingjie Guan, Yan Wen, Qisen Huang
  • Patent number: 11973215
    Abstract: The present application discloses a negative active material, preparation process thereof and a secondary battery and the related battery module, battery pack and device. The negative active material comprises a core material and a modified polymer coating layer coated on at least a part of the outer surface of the core material, the core material comprises one or more of silicon-based materials and tin based materials, the coating layer comprises carbon element and nitrogen element, wherein the nitrogen element is present in the negative active material in a mass percentage of 0.1%˜0.66%, and the coating layer comprises a —C?N-linkage.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: April 30, 2024
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Yingjie Guan, Yuzhen Zhao, Yan Wen, Qisen Huang