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).

  • Patent number: 11289694
    Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: March 29, 2022
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Huafeng Huang, Changliang Sheng, Cheng Li, Qisen Huang
  • Publication number: 20220085380
    Abstract: The present application discloses a negative electrode current collector, a negative electrode plate and an electrochemical device. The negative electrode current collector includes an organic support layer and a copper-based conductive layer disposed on at least one surface of the organic support layer; and a copper-based crystal grain size in the copper-based conductive layer is from 10 nm to 500 nm. The negative electrode current collector provided by the present application has good mechanics properties while having less weight and good electrical conductivity and current collection performance, which can improve preparation yields of the negative electrode current collector, the negative electrode plate and the electrochemical device and their safety and reliability during use, and enables the electrochemical device to have relatively high gravimetric energy density and good electrochemical performance.
    Type: Application
    Filed: November 30, 2021
    Publication date: March 17, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Xin LIU, Qisen HUANG, Shiwen WANG, Changliang SHENG, Jia PENG, Mingling LI, Xianghui LIU
  • Publication number: 20220085379
    Abstract: The present application discloses a positive electrode current collector, a positive electrode plate, an electrochemical device, and an apparatus. The positive electrode current collector includes a polymer material-based support layer and an aluminum-based conductive layer disposed on at least one surface of the support layer; a thickness D1 of the aluminum-based conductive layer, a tensile strength T of the support layer, and a thickness D2 of the support layer satisfy a relational formula 0.01?(200×D1)/(T×D2)?0.5, in the formula D1 and D2 are in the same unit, and T is in MPa. The positive electrode current collector has relatively high mechanics and mechanical properties, good electrical conductivity and current collection performance and low weight, which can improve preparation yield of the positive electrode current collector, the positive electrode plate and the electrochemical device and their reliability during use.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 17, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Xin LIU, Shiwen WANG, Qisen HUANG, Cheng LI, Mingling Ll, Jia PENG, Xianghui LIU
  • Publication number: 20220085383
    Abstract: The present application discloses a negative electrode current collector, a negative electrode plate, an electrochemical device, and an apparatus. The negative electrode current collector includes a polymer material-based support layer and a copper-based conductive layer disposed on at least one surface of the support layer; wherein a thickness D1 of the copper-based conductive layer, a tensile strength T of the support layer, and a thickness D2 of the support layer satisfy a relational formula 0.01?(300×D1)/(T×D2)?0.5. The negative electrode current collector has relatively high mechanics and mechanical properties, good electrical conductivity and current collection performance and low weight, which can improve preparation yield of the negative electrode current collector, the negative electrode plate and the electrochemical device and their reliability during use, and is beneficial to enabling the electrochemical device to have relatively high electrochemical performance and gravimetric energy density.
    Type: Application
    Filed: November 26, 2021
    Publication date: March 17, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Xin LIU, Shiwen Wang, Qisen Huang, Cheng Li, Mingling Li, Jia Peng, Xianghui Liu
  • Publication number: 20220085384
    Abstract: The present application discloses a composite current collector, an electrode plate and an electrochemical device. The composite current collector includes an organic support layer and a metal conductive layer disposed on at least one surface of the organic support layer; and the composite current collector has a brittleness parameter C of 0.01?C?0.5. The composite current collector provided by the present application has relatively high mechanics and mechanical properties which having good electrical conductivity and current collection performance, which can improve preparation yield of the composite current collector, the electrode plate and the electrochemical device and their reliability during use, and enables the electrochemical device to have relatively high electrochemical performance and gravimetric energy density.
    Type: Application
    Filed: November 30, 2021
    Publication date: March 17, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Xin LIU, Shiwen Wang, Qisen Huang, Cheng Li, Mingling Li, Jia Peng, Xianghui Liu
  • Publication number: 20220085361
    Abstract: The present application discloses a negative electrode plate, an electrode assembly, a lithium-ion battery and process for the preparation thereof, and apparatus containing lithium-ion battery. The negative electrode plate includes a negative electrode current collector; a negative electrode active material layer disposed on the negative electrode current collector; a binder-free inorganic dielectric layer disposed on one side of the negative electrode active material layer away from the negative electrode current collector, the inorganic dielectric layer comprising an inorganic dielectric material, and the inorganic dielectric layer including at least a main body portion disposed on the surface of the negative electrode active material layer, the main body portion having a thickness of from 30 nm to 1000 nm; and a lithium metal layer disposed on the surface of the inorganic dielectric layer away from the negative electrode active material layer.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 17, 2022
    Applicant: ContemporaryAmperexTechnologyCo.,Limited
    Inventors: Changliang SHENG, Shiwen WANG, Qisen HUANG, Cheng Li, Chengdu LIANG
  • Publication number: 20220052346
    Abstract: A positive current collector, a positive electrode plate, a secondary battery, and an apparatus, the positive current collector comprising a support layer, provided with two opposing surfaces in the thickness direction thereof, and a conductive layer arranged on at least one of the two surfaces of the support layer, wherein the conductive layer has a thickness Di satisfying 300 nm?D1?2 ?m; and when the positive current collector has a the tensile strain of 1.5%, the conductive layer has a sheet resistance growth rate of T?30%. The positive current collector has higher safety performance and meanwhile higher electrical performance, and thus a positive electrode plate and a secondary battery adopting the positive current collector could have higher safety performance and meanwhile higher electro-chemical performance.
    Type: Application
    Filed: October 28, 2021
    Publication date: February 17, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Shiwen Wang, Qisen Huang
  • Publication number: 20220052349
    Abstract: A positive current collector, a positive electrode plate, a battery, and an apparatus, the positive current collector comprising a support layer, provided with two opposite surfaces in a thickness direction of the support layer, and a conductive layer arranged on at least one of the two surfaces of the support layer, wherein the conductive layer has a thickness Di satisfying 300 nm?D1?2 ?m; and when the positive current collector has a the tensile strain of 3.0% or more, the conductive layer has a sheet resistance growth rate of T1?50%. The positive current collector has higher safety performance and meanwhile higher electrical performance, and thus a positive electrode plate and a battery adopting the positive current collector could have higher safety performance and meanwhile higher electro-chemical performance.
    Type: Application
    Filed: October 28, 2021
    Publication date: February 17, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang
  • Publication number: 20220002160
    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: Application
    Filed: September 15, 2021
    Publication date: January 6, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu LIANG, Yuzhen ZHAO, Yan WEN, Qisen HUANG
  • Patent number: 11177479
    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: Grant
    Filed: December 5, 2018
    Date of Patent: November 16, 2021
    Assignee: Contemporary Amperex Technology Co., Ltd.
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang
  • Patent number: 11158846
    Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector; a negative active material layer disposed on at least one surface of the negative current collector, the negative active material layer comprising opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; and an inorganic dielectric layer consisting of an inorganic dielectric material disposed on the first surface of the negative active material layer. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: October 26, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Changliang Sheng, Huafeng Huang, Qisen Huang
  • Patent number: 11152624
    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 D1 of the conductive layer is 300 nm?D1?2 ?m; an elongation at break B of the support layer is 10,000%?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 T1 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: Grant
    Filed: December 23, 2020
    Date of Patent: October 19, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu Liang, Qisen Huang, Shiwen Wang
  • Publication number: 20210313567
    Abstract: The present application discloses a negative electrode plate, an electrode assembly, a lithium ion battery, preparation process thereof, and apparatus containing lithium-ion battery.
    Type: Application
    Filed: June 11, 2021
    Publication date: October 7, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Changliang SHENG, Shiwen Wang, Qisen Huang, Cheng Li, Chengdu Liang
  • Publication number: 20210280857
    Abstract: The present application discloses a composite graphite material, a secondary battery, an apparatus and a preparation method thereof. The composite graphite material includes a core material and a coating layer coating at least a part of the surface of the core material, the core material including graphite; wherein the absolute value K of zeta potential of the composite graphite material in deionized water with a pH of 7 is at least 20 mV. The use of the composite graphite material provided by the present application can improve the cohesion and bonding force of the negative electrode plate, thereby reducing the cyclic expansion of the secondary battery.
    Type: Application
    Filed: May 25, 2021
    Publication date: September 9, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu LIANG, Yuzhen ZHAO, Yan WEN, Qisen HUANG
  • Publication number: 20210210749
    Abstract: This application discloses a positive-electrode plate, a lithium-ion battery equipped with the positive-electrode plate, a battery module, a battery pack, and an apparatus. The lithium-ion battery includes a positive-electrode plate, a negative-electrode plate, a separator, and an electrolyte. The positive-electrode plate includes a positive-electrode current collector and a positive-electrode active substance layer that is disposed on a surface of the positive-electrode current collector and that includes a positive-electrode active substance. An inorganic dielectric layer containing no binder is disposed on a surface of the positive-electrode active substance layer, and a resistance of the positive-electrode plate is not higher than 8 ohms.
    Type: Application
    Filed: September 26, 2019
    Publication date: July 8, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Yuqun ZNEG, Chengdu LIANG, Changliang SHENG, Huafeng HUANG, Qisen HUANG
  • Publication number: 20210175499
    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: Application
    Filed: January 3, 2021
    Publication date: June 10, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Chengdu LIANG, Yingjie GUAN, Yuzhen ZHAO, Yan WEN, Qisen HUANG
  • Patent number: 11024854
    Abstract: The present application relates to a current collector, an electrode plate, a battery and usages thereof. The current collector includes at least one conductive layer configured to support an electrode active material layer, and an insulation layer configured to support the at least one conductive layer. The conductive layer has a room temperature film resistance RS satisfying 0.01?/??RS?0.15?/?. The current collector can significantly increase resistance in short-circuit and reduce current in the short-circuit, and reduce heat generated during the short-circuit and improving safety performance. The heat can be totally absorbed by the battery. Therefore, the resulted temperature rise of the battery is small, the damage to the battery caused by the short circuit can be limited to a “point”, and only a “point break” is formed, without influencing normal operation of the battery in a short time.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: June 1, 2021
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Chengdu Liang, Huafeng Huang, Qisen Huang
  • Publication number: 20210151770
    Abstract: The present disclosure provides a lithium ion secondary battery, a battery core, a negative electrode plate and an apparatus containing the lithium ion secondary battery. The lithium ion secondary battery includes a battery core and an electrolytic solution, the battery core including a positive electrode plate comprising a positive current collector and a positive active material layer, a separator, and a negative electrode plate comprising a negative current collector and a negative active material layer, wherein the positive current collector and/or the negative current collector are a composite current collector, the composite current collector comprises a polymer-based support layer and a conductive layer disposed on at least one surface of the support layer, and the composite current collector has a thermal conductivity in a range of 0.01 W/(m·K) to 10 W/(m·K), preferably in a range of 0.1 W/(m·K) to 2 W/(m·K).
    Type: Application
    Filed: December 19, 2020
    Publication date: May 20, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Xin LIU, Qisen HUANG, Shiwen WANG, Xianghui LIU, Jia PENG, Mingling LI, Changliang SHENG
  • Publication number: 20210151771
    Abstract: The present disclosure provides a negative current collector (10), a negative electrode plate (20), an electrochemical device, and an apparatus. The negative current collector (10) includes a support layer, and a conductive layer (102) disposed on at least one of two opposite surfaces of the support layer (101) in a thickness direction of the support layer; wherein the support layer (101) has a smaller density than the conductive layer (102); the conductive layer (102) has a thickness D1 satisfying 300 nm?D1?2 ?m, preferably 500 nm?D1?1.5 ?m; and when the negative current collector (10) has a tensile strain of 1.5%, the conductive layer (102) has a sheet resistance growth rate T satisfying T?5%.
    Type: Application
    Filed: December 20, 2020
    Publication date: May 20, 2021
    Applicant: Contemporary Amperex Technology Co. Limited
    Inventors: Chengdu LIANG, Xin Liu, Qisen Huang
  • Publication number: 20210151751
    Abstract: The present application provide a secondary battery and related battery module, battery pack and apparatus. The secondary battery includes a positive electrode plate, a negative electrode plate, a separator and an electrolyte, wherein the secondary battery includes a positive active material selected from one or more of layered lithium nickel cobalt manganese oxide and layered lithium nickel cobalt aluminum oxide, and a negative active material including graphite and silicon-oxygen compound; the delithiation capacity A of the negative electrode film in the voltage range of 0.005V to the delithiation platform voltage and the delithiation capacity B of the negative electrode film in the voltage range of the delithiation platform voltage to 1.2V satisfy: 1A/B2; and when the secondary battery is discharged to a voltage of 2.5V, the voltage U of the negative electrode plate relative to a lithium metal reference electrode satisfies: 0.5VU0.7V.
    Type: Application
    Filed: January 26, 2021
    Publication date: May 20, 2021
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Yingjie GUAN, Yuzhen Zhao, Yan Wen, Qisen Huang, Xin Liu