Patents by Inventor Qisen HUANG

Qisen HUANG 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: 20210143440
    Abstract: This application discloses a lithium-ion secondary battery. The lithium-ion secondary battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolytic solution.
    Type: Application
    Filed: December 16, 2020
    Publication date: May 13, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Xin LIU, Qisen Huang, Shiwen Wang, Xianghui Liu, Jia Peng, Mingling Li, Changliang Sheng
  • Patent number: 11005105
    Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate and an electrochemical device. The current collector includes an insulation layer; a conductive layer located on at least one surface of the insulation layer; and a first protective layer provided on a surface of the conductive layer facing away from the insulation layer. The first protective layer is made of a metal. The current collector is provided with a plurality of holes penetrating through the insulation layer, the conductive layer and the first protective layer.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: May 11, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang, Xin Liu
  • Publication number: 20210119219
    Abstract: This application discloses a negative current collector, a negative electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The negative current collector includes a support layer and a metal conductive layer that is disposed on at least one of two opposite surfaces of the support layer in a thickness direction of the support layer. A density of the support layer is less than a density of the metal conductive layer; and the density of the metal conductive layer is 8.0 g/cm3 to 8.96 g/cm3. A thickness D1 of the metal conductive layer is 300 nm?D1?2 ?m. When a tensile strain of the negative current collector is 2.5%, a sheet resistance growth rate T of the metal conductive layer is T?5%.
    Type: Application
    Filed: December 4, 2020
    Publication date: April 22, 2021
    Inventors: Xin Liu, Mingling Li, Jia Peng, Qisen Huang, Chengdu Liang
  • Publication number: 20210119220
    Abstract: This application discloses a positive current collector, a positive electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The positive current collector includes a support layer, having two opposite surfaces in a thickness direction of the support layer; and an aluminum-based conductive layer, disposed on at least one of the two surfaces of the support layer. A thickness D1 of the aluminum-based conductive layer is 300 nm?D1?2 ?m; a density of the aluminum-based conductive layer is 2.5 g/cm3 to 2.8 g/cm3; and when a tensile strain of the positive current collector is 2.5%, a sheet resistance growth rate T of the aluminum-based conductive layer is T?10%. The positive current collector provided in this application has a relatively small weight and higher electrical performance, so that the electrochemical apparatus provides a higher weight energy density and higher electrochemical performance.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 22, 2021
    Inventors: Chengdu LIANG, Qisen Huang, Shiwen Wang
  • Patent number: 10985377
    Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector includes an insulation layer; and a conductive layer at least located on at least one surface of the insulation layer. The conductive layer has a room temperature thin film resistor of RS, where 0.01?/??RS?0.15?/?. The current collector is provided with a plurality of holes penetrating through the insulation layer and the conductive layer.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: April 20, 2021
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang, Xin Liu
  • Publication number: 20210111412
    Abstract: A positive electrode current collector, a positive electrode piece, an electrochemical device and an apparatus, where the positive electrode current collector includes a support layer and a conductive layer provided on the support layer, where a material of the conductive layer is aluminum or aluminum alloy, and a thickness Di of the conductive layer is 300 nm?D1?2 ?m; an elongation at break B of the support layer is 10000%?B?12%, and a volume resistivity of the support layer is greater than or equal to 1.0×10?5 ?·m; when a tensile strain of the positive electrode current collector is 2%, a square resistance growth rate Ti of the conductive layer is T1?10%. The positive electrode current collector provided in the present application can simultaneously take into account both high safety performance and electrical performance.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 15, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu LIANG, Qisen HUANG, Shiwen WANG
  • Patent number: 10944112
    Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector includes an insulation layer; and a conductive layer at least located on at least one surface of the insulation layer. The conductive layer has a thickness of D2, where 30 nm?D2?3 ?m. The current collector is provided with a plurality of holes penetrating through the insulation layer and the conductive layer.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: March 9, 2021
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang, Xin Liu
  • Patent number: 10910652
    Abstract: A current collector, an electrode plate, and an electrochemical device are provided in the present disclosure. The current collector includes an insulation layer and at least one conductive layer. The insulation layer is used to support the conductive layer. The at least one conductive layer is used to support an electrode active material layer and is located above at least one surface of the insulation layer. The insulation layer has a density smaller than that of the conductive layer. A metal protective layer is arranged on at least one surface of each of the at least one conductive layer.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: February 2, 2021
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Chengdu Liang, Xin Liu, Zuyu Wu, Qisen Huang
  • Patent number: 10868289
    Abstract: The present disclosure relates to the field of energy storage, and in particular to a separator, a method for preparing the separator, and an electrochemical device including the separator. The separator includes a porous substrate. At least one of a porous inorganic layer and an organic particle coating layer is provided on at least one surface of the porous substrate, and a composite layer is provided on at least one surface of the porous substrate. The composite layer includes a porous inorganic layer and an organic particle coating layer sequentially disposed on the surface of the porous substrate. The porous inorganic layer includes an inorganic dielectric material containing no binder. The organic particle coating layer is a coating discontinuously distributed on the porous inorganic layer. The composite layer has a mass of 0.2 g/m2 to 8.4 g/m2 per unit area.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: December 15, 2020
    Inventors: Huafeng Huang, Qisen Huang, Shiwen Wang, Chengdu Liang
  • Patent number: 10862090
    Abstract: The present disclosure relates to a composite separator, a preparation method of the composite separator, and an electrochemical device containing the composite separator. The composite separator includes a substrate and an inorganic layer disposed on at least one surface of the substrate. The substrate is a porous substrate, and the inorganic layer is an inorganic dielectric layer which is a continuous dense film layer with porosity lower than 10% and contains no binder. A thickness of the inorganic layer is 20 nm-1000 nm. An interfacial peeling force between the inorganic layer and the substrate is no less than 30 N/m. The separator of the present application has high wettability with respect to electrolyte, almost no thermal shrinkage, relatively high mechanical strength, and favorable corrosion resistance and durability performances, and thus, a battery using the separator has relatively high thermal stability and nailing strength.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: December 8, 2020
    Inventors: Huafeng Huang, Qisen Huang, Shiwen Wang, Chengdu Liang
  • Patent number: 10847802
    Abstract: Provided are a negative electrode, a method for preparing the negative electrode, and an electrochemical device. The negative electrode includes a current collector and a negative electrode active material layer disposed on at least one surface of the current collector and comprising a negative electrode active material. A porous inorganic dielectric layer is provided on a surface of the at least one negative electrode active material layer away from the current collector; a thickness of the porous inorganic dielectric layer is 20 nm-2000 nm, and the porous inorganic dielectric layer contains no binder. The negative electrode can alleviate lithium precipitation on negative electrode surface during large-current charging, stabilize negative electrode interface, and alleviate side reaction between the negative electrode and the electrolyte, thereby improving the cycle life of the battery, reducing short-circuit risk in the battery and improving high-temperature life of the battery.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: November 24, 2020
    Inventors: Shiwen Wang, Qisen Huang, Huafeng Huang, Chengdu Liang
  • Patent number: 10826130
    Abstract: The present application discloses a negative active material and a preparation method thereof and a secondary battery. The negative active material comprises: lithium pre-intercalated silicon-containing materials; and a polymer coating layer coated on an outer surface of each particle of the lithium pre-intercalated silicon-containing materials. The negative active material can improve the first coulombic efficiency of the secondary battery, inhibit the volume expansion of the secondary battery and improve the cycle performance of the secondary battery. The preparation method of the negative electrode plate is simple, environment-friendly, and suitable for mass production.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: November 3, 2020
    Assignee: NINGDE AMPEREX TECHNOLOGY LIMITED
    Inventor: Qisen Huang
  • Publication number: 20200343558
    Abstract: A battery is provided in the present disclosure. The battery includes: a positive electrode plate including a positive current collector and a positive active material layer; a negative electrode plate including a positive current collector and a negative active material layer; and an electrolyte. The positive current collector includes an insulation layer used to support a conductive layer and the conductive layer used to support the positive active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 which satisfies: 300 nm?D2?2 ?m. A protective layer is arranged on at least one surface of the conductive layer. The negative current collector is a copper foil current collector having a thickness of 1 ?m to 5.9 ?m.
    Type: Application
    Filed: July 9, 2020
    Publication date: October 29, 2020
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu LIANG, Huafeng HUANG, Qisen HUANG
  • Patent number: 10811660
    Abstract: A separator, a method for preparing the separator, and an electrochemical device containing the separator. The separator includes a substrate and an inorganic layer disposed on at least one side of the substrate. The substrate is a porous substrate. The inorganic layer is a dielectric layer containing no binder. The inorganic layer has a thickness of 20 nm to 2000 nm. A mass of the inorganic layer is M1, a mass of the substrate is M2, and M1/M2 is greater than or equal to 0.05 but smaller than or equal to 7.5. An interfacial peeling force between the inorganic layer and the substrate is not smaller than 30 N/m. The interfacial wettability and thermal shrinkage resistance performance of the separator are effectively improved while the separator has a certain mechanical strength. The separator can have favorable mechanical strength and thermal shrinkage percentage and high energy density.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: October 20, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Huafeng Huang, Qisen Huang, Shiwen Wang, Chengdu Liang
  • Publication number: 20200295377
    Abstract: The present disclosure relates to the field of battery and, in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector of the present disclosure includes an insulation layer and a conductive layer. The insulation layer is used to support the conductive layer. The conductive layer is used to support an electrode active material layer and is located on at least one surface of the insulation layer. The insulation layer has a density smaller than that of the conductive layer. The insulation layer has a thickness of D1 satisfying 1 ?m?D1?10 ?m. The conductive layer has a thickness of D2 satisfying 200 nm?D2?1.5 ?m. The insulation layer has a tensile strength greater than or equal to 150 MPa.
    Type: Application
    Filed: December 5, 2018
    Publication date: September 17, 2020
    Inventors: Chengdu LIANG, Huafeng HUANG, Qisen HUANG
  • Patent number: 10763513
    Abstract: The present disclosure provides a current collector, an electrode plate, and a battery. The current collector includes an insulation layer, a conductive layer and at least one protective layer. The insulation layer is used to support the conductive layer. The conductive layer is used to support an electrode active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 satisfying 300 nm?D2?2 ?m. The at least one protective layer is arranged on at least one surface of the conductive layer.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: September 1, 2020
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang
  • Patent number: 10749184
    Abstract: A battery is provided in the present disclosure. The battery includes: a positive electrode plate including a positive current collector and a positive active material layer; a negative electrode plate including a positive current collector and a negative active material layer; and an electrolyte. The positive current collector includes an insulation layer used to support a conductive layer and the conductive layer used to support the positive active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 which satisfies: 300 nm?D2?2 ?m. A protective layer is arranged on at least one surface of the conductive layer. The negative current collector is a copper foil current collector having a thickness of 1 ?m to 5.9 ?m.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: August 18, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang
  • Patent number: 10714757
    Abstract: The present disclosure provides a current collector, an electrode plate and a battery. The current collector includes an insulation layer and at least one conductive layer located on at least one surface of the insulation layer. The insulation layer is used to support the conductive layer, and the conductive layer is used to support an electrode active material layer. The conductive layer has a thickness of D2, and 300 nmD22 ?m. The current collector further includes a protective layer provided on a surface of the conductive layer facing towards the insulation layer. The current collector according to the present disclosure can increase a short-circuit resistance in case of short circuit caused by the battery being abnormal, thereby resulting in protective effect on the conductive layer, and can also increase the bonding force between the insulation layer and the conductive layer, thereby increasing mechanical strength of the current collector.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: July 14, 2020
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Chengdu Liang, Huafeng Huang, Zuyu Wu, Qisen Huang
  • Publication number: 20200212439
    Abstract: The present disclosure provides a negative electrode active material, a battery and a device. The negative electrode active material comprises a first silicon oxide and a second silicon oxide, wherein, a ratio of a particle diameter Dn10 of the first silicon oxide to a particle diameter Dn10 of the second silicon oxide is 8˜25, the particle diameter Dn10 of the first silicon oxide is 1.0 ?m˜5.0 ?m, the particle diameter Dn10 of the second silicon oxide is 0.05 ?m˜0.50 ?m. By selecting two kinds of silicon oxides with specific ranges of Dn10 to match with each other, the present disclosure controls the thickness rebound of negative electrode plate, ensures good electrical contact between the negative electrode active material particles, in turn is beneficial to improve the cycle stability and the cycle-life of the battery.
    Type: Application
    Filed: December 20, 2019
    Publication date: July 2, 2020
    Inventors: Yuqun ZENG, Chengdu Liang, Yuzhen Zhao, Qisen Huang, Yingjie Guan, Yan Wen
  • Patent number: 10658673
    Abstract: A battery is provided in the present disclosure. The battery includes: a positive electrode plate including a positive current collector and a positive active material layer; a negative electrode plate including a positive current collector and a negative active material layer; and an electrolyte. The positive current collector includes an insulation layer used to support a conductive layer and the conductive layer used to support the positive active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 which satisfies: 300 nm?D2?2 ?m. A protective layer is arranged on at least one surface of the conductive layer. The negative current collector is a copper foil current collector having a thickness of 6 ?m to 12 ?m.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: May 19, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang