Patents by Inventor Mingling Li

Mingling Li 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: 20240177953
    Abstract: A processing method for preventing electromagnetic induction when a main system and a standby system of a safety drive unit co-drive a relay. The method includes the following steps: periodically acquiring and detecting a drive command; detecting a port state of an output port of a safety drive unit when the drive command changes; performing a corresponding processing operation according to the port state of the output port; and repeating the foregoing steps.
    Type: Application
    Filed: September 18, 2021
    Publication date: May 30, 2024
    Inventors: Siyuan CHENG, Tao ZHANG, Zhijun JI, Mingwang XU, Limin NING, Chao LI, Mingling ZHU, Lifan YIN
  • Publication number: 20240141532
    Abstract: A negative electrode composite current collector including a copper plating solution is described. The copper plating solution includes a leveling agent represented by a general formula (1) where an anion X is F?, Cl?, or Br?; R1, R2, and R3 are each independently selected from O or S; and R4, R5, and R6 are each independently selected from hydrogen, a substituted or unsubstituted alkyl, a substituted or unsubstituted vinyl, a substituted or unsubstituted aryl, and a substituted or unsubstituted heteroaryl.
    Type: Application
    Filed: December 14, 2023
    Publication date: May 2, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Jia PENG, Mingling LI, Xin LIU, Qisen HUANG
  • Publication number: 20240113288
    Abstract: This application relates to a negative electrode plate, a secondary battery and apparatus thereof. The secondary battery of the present application comprises a negative electrode plate, the negative electrode plate comprises a composite current collector and a negative electrode active material layer disposed on at least one surface of the composite current collector, the negative electrode active material layer comprises a silicon-based active material, the silicon-based active material accounts for 0.5 wt % to 50 wt % of total mass of the negative electrode active material layer, and the composite current collector comprises a polymer support layer and a metal conductive layer disposed on at least one surface of the polymer support layer. The secondary battery and the negative electrode plate achieve good coordination between the current collector and the negative electrode active material layer.
    Type: Application
    Filed: November 30, 2023
    Publication date: April 4, 2024
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Cheng LI, Qisen HUANG, Xin LIU, Changliang SHENG, Shiwen WANG, Xianghui LIU, Jia PENG, Mingling LI, Chengdu LIANG
  • Patent number: 11932959
    Abstract: This application provides a copper plating solution for a composite current collector, including a leveling agent represented by a general formula (1) where an anion X is F?, Cl?, or Br?; R1, R2, and R3 are each independently selected from O or S; and R4, R5, and R6 are each independently selected from hydrogen, a substituted or unsubstituted alkyl, a substituted or unsubstituted vinyl, a substituted or unsubstituted aryl, and a substituted or unsubstituted heteroaryl.
    Type: Grant
    Filed: September 1, 2022
    Date of Patent: March 19, 2024
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Jia Peng, Mingling Li, Xin Liu, Qisen Huang
  • Publication number: 20230361403
    Abstract: A battery cell, a battery module, a battery pack, and an electrical apparatus are provided. The battery cell includes an intermediate portion and side portions located on two sides of the intermediate portion in a thickness direction, the intermediate portion comprising m battery cell sub-units and the side portions comprising n battery cell sub-units, where m+n is an integer greater than or equal to 3. Each of the battery cell sub-units comprises a positive electrode sheet, a negative electrode sheet and a separator arranged between the positive electrode sheet and the negative electrode sheet, and each of the m battery cell sub-units has a dry battery cell nail penetration short-circuit resistance greater than that of each of the n battery cell sub-units.
    Type: Application
    Filed: June 29, 2023
    Publication date: November 9, 2023
    Inventors: Mingling Li, Jia Peng, Xin Liu, Qisen Huang, Cheng Li, Xianghui Liu
  • Publication number: 20230352693
    Abstract: A positive electrode current collector and a positive electrode plate, a battery, a battery module, a battery pack, and an apparatus including the positive electrode current collector are provided. In some embodiments, a positive electrode current collector is provided, including an organic support layer and an aluminum-based conductive layer disposed on at least one surface of the organic support layer, where the aluminum-based conductive layer contains Al and at least one modifying element selected from O, N, F, B, S, and P, an XPS spectrogram of the aluminum-based conductive layer with a surface passivation layer removed through etching has at least a first peak falling in a range of 70 eV to 73.5 eV and a second peak falling in a range of 73.5 eV to 78 eV, and a ratio x of peak intensity of the second peak to that of the first peak satisfies 0<x?3.0.
    Type: Application
    Filed: May 29, 2023
    Publication date: November 2, 2023
    Inventors: Xin Liu, Qisen Huang, Mingling Li, Xianghui Liu, Cheng Li, Jia Peng, Chengdu Liang
  • Patent number: 11791472
    Abstract: A positive current collector, a secondary battery, and an electrical device are provided. In some embodiments, the positive current collector includes: a support layer; and a conductive layer located on at least one surface of the support layer, where the conductive layer includes a first metal portion configured to connect to a tab, where, along a thickness direction of the conductive layer, the first metal portion includes at least three sublayers, and melting points of the at least three sublayers rise stepwise in ascending order of distance from the support layer. In the embodiments of this application, the first metal portion includes at least three sublayers, and the melting points of the at least three sublayers rise stepwise in ascending order of distance from the support layer, thereby helping increase a bonding force between the conductive layer and the support layer and reducing the probability of peel-off and delamination between the layers.
    Type: Grant
    Filed: May 9, 2023
    Date of Patent: October 17, 2023
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Xin Liu, Qisen Huang, Mingling Li, Xianghui Liu, Jia Peng, Cheng Li, Meng Qin
  • Patent number: 11784312
    Abstract: This application provides a current collector and a preparation method thereof, a secondary battery containing such current collector, a battery module, a battery pack, and an electric apparatus. The current collector in this application includes a support layer, a binder layer, and a metal layer, where the binder layer is arranged between the support layer and the metal layer, the binder layer includes an organic binder and inorganic particles, a thickness D0 of the binder layer is 1.0-5.0 ?m, optionally 1.0-3.0 ?m; and the inorganic particles include large particles with a median particle size D50large and small particles with a median particle size D50small, and the median particle sizes of the large particles and the small particles satisfy the following relationships: D50large>D50small; D50large=(0.5-0.9)×D0; and D50small=(0.1-0.4)×D0.
    Type: Grant
    Filed: October 10, 2022
    Date of Patent: October 10, 2023
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Mingling Li, Jia Peng, Xin Liu, Cheng Li, Xianghui Liu, Qisen Huang
  • Publication number: 20230282838
    Abstract: A positive current collector, a secondary battery, and an electrical device are provided. In some embodiments, the positive current collector includes: a support layer; and a conductive layer located on at least one surface of the support layer, where the conductive layer includes a first metal portion configured to connect to a tab, where, along a thickness direction of the conductive layer, the first metal portion includes at least three sublayers, and melting points of the at least three sublayers rise stepwise in ascending order of distance from the support layer. In the embodiments of this application, the first metal portion includes at least three sublayers, and the melting points of the at least three sublayers rise stepwise in ascending order of distance from the support layer, thereby helping increase a bonding force between the conductive layer and the support layer and reducing the probability of peel-off and delamination between the layers.
    Type: Application
    Filed: May 9, 2023
    Publication date: September 7, 2023
    Inventors: Xin Liu, Qisen Huang, Mingling Li, Xianghui Liu, Jia Peng, Cheng Li, Meng Qin
  • Patent number: 11705556
    Abstract: A positive electrode current collector and a positive electrode plate, a battery, a battery module, a battery pack, and an apparatus including the positive electrode current collector are provided. In some embodiments, a positive electrode current collector is provided, including an organic support layer and an aluminum-based conductive layer disposed on at least one surface of the organic support layer, where the aluminum-based conductive layer contains Al and at least one modifying element selected from O, N, F, B, S, and P, an XPS spectrogram of the aluminum-based conductive layer with a surface passivation layer removed through etching has at least a first peak falling in a range of 70 eV to 73.5 eV and a second peak falling in a range of 73.5 eV to 78 eV, and a ratio x of peak intensity of the second peak to that of the first peak satisfies 0<x?3.0.
    Type: Grant
    Filed: November 16, 2022
    Date of Patent: July 18, 2023
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Xin Liu, Qisen Huang, Mingling Li, Xianghui Liu, Cheng Li, Jia Peng, Chengdu Liang
  • Publication number: 20230187655
    Abstract: A composite current collector includes a support layer and a conductive layer. The support layer has two surfaces opposite to each other along a thickness direction. The conductive layer is provided on the two surfaces and includes a first portion and a second portion. The first portion includes a first sub-portion and a second sub-portion provided on the two surfaces, respectively. The second portion includes a third sub-portion and a fourth sub-portion. The third sub-portion and the first sub-portion are integrally provided. The fourth sub-portion and the second sub-portion are integrally provided. The third sub-portion and the fourth sub-portion both project from the support layer. The third sub-portion and the fourth sub-portion are affixed to each other and fused as a whole.
    Type: Application
    Filed: December 21, 2022
    Publication date: June 15, 2023
    Inventors: Mingling LI, Jia PENG, Xin LIU, Qisen HUANG, Keqiang LI, Cheng LI, Xianghui LIU
  • Patent number: 11646424
    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: Grant
    Filed: December 16, 2020
    Date of Patent: May 9, 2023
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Xin Liu, Qisen Huang, Shiwen Wang, Xianghui Liu, Jia Peng, Mingling Li, Changliang Sheng
  • Publication number: 20230132206
    Abstract: This application provides a copper plating solution for a composite current collector, including a leveling agent represented by a general formula (1) where an anion X is F?, Cl?, or Br?; R1, R2, and R3 are each independently selected from O or S; and R4, R5, and R6 are each independently selected from hydrogen, a substituted or unsubstituted alkyl, a substituted or unsubstituted vinyl, a substituted or unsubstituted aryl, and a substituted or unsubstituted heteroaryl.
    Type: Application
    Filed: September 1, 2022
    Publication date: April 27, 2023
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Jia PENG, Mingling LI, Xin LIU, Qisen HUANG
  • Publication number: 20230112962
    Abstract: The present disclosure relates to a composite positive electrode current collector. On a surface of an insulation layer, a protective layer, a graphene metallization layer and a conductive layer may be arranged in sequence; and the protective layer may comprise a metal oxide, and the graphene metallization layer may contain highly reduced graphene oxide having an oxygen-containing organic group.
    Type: Application
    Filed: November 10, 2022
    Publication date: April 13, 2023
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Jia PENG, Mingling LI, Xin LIU, Qisen HUANG
  • Patent number: 11611081
    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: Grant
    Filed: December 19, 2020
    Date of Patent: March 21, 2023
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Xin Liu, Qisen Huang, Shiwen Wang, Xianghui Liu, Jia Peng, Mingling Li, Changliang Sheng
  • Publication number: 20230083168
    Abstract: A positive electrode current collector and a positive electrode plate, a battery, a battery module, a battery pack, and an apparatus including the positive electrode current collector are provided. In some embodiments, a positive electrode current collector is provided, including an organic support layer and an aluminum-based conductive layer disposed on at least one surface of the organic support layer, where the aluminum-based conductive layer contains Al and at least one modifying element selected from O, N, F, B, S, and P, an XPS spectrogram of the aluminum-based conductive layer with a surface passivation layer removed through etching has at least a first peak falling in a range of 70 eV to 73.5 eV and a second peak falling in a range of 73.5 eV to 78 eV, and a ratio x of peak intensity of the second peak to that of the first peak satisfies 0<x?3.0.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 16, 2023
    Inventors: Xin Liu, Qisen Huang, Mingling Li, Xianghui Liu, Cheng Li, Jia Peng, Chengdu Liang
  • Publication number: 20220209226
    Abstract: This application relates to a negative electrode plate, a secondary battery and apparatus thereof. The secondary battery of the present application comprises a negative electrode plate, the negative electrode plate comprises a composite current collector and a negative electrode active material layer disposed on at least one surface of the composite current collector, the negative electrode active material layer comprises a silicon-based active material, the silicon-based active material accounts for 0.5 wt % to 50 wt % of total mass of the negative electrode active material layer, and the composite current collector comprises a polymer support layer and a metal conductive layer disposed on at least one surface of the polymer support layer, and the composite current collector has a brittleness parameter C ranging from 0.03 to 0.5. The secondary battery and the negative electrode plate achieve good coordination between the current collector and the negative electrode active material layer.
    Type: Application
    Filed: March 18, 2022
    Publication date: June 30, 2022
    Applicant: Contemporary Amperex Technology Co., Limited
    Inventors: Cheng LI, Qisen HUANG, Xin LIU, Changliang SHENG, Shiwen WANG, Xianghui LIU, Jia PENG, Mingling LI, Chengdu LIANG
  • 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: 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: 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