Patents by Inventor Huihui Liu

Huihui Liu 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: 20250079532
    Abstract: This application discloses a battery cell, a battery, and an electric apparatus. The battery cell includes an electrode assembly. The electrode assembly includes a positive electrode plate, a negative electrode plate, a separator, an insulation layer, and an adhesive layer. The positive electrode plate, the separator, and the negative electrode plate are stacked and wound, and the electrode assembly has bent regions. At least a portion of the insulation layer and at least a portion of the adhesive layer are disposed in the bent region, and the insulation layer is adhered to the positive electrode plate or the negative electrode plate through the adhesive layer. In a thickness direction of the insulation layer, a projected area of the adhesive layer is smaller than a projected area of the insulation layer.
    Type: Application
    Filed: November 15, 2024
    Publication date: March 6, 2025
    Applicant: Contemporary Amperex Technology (Hong Kong) Limited
    Inventors: Liya ZHAO, Wei Li, Shengwu Zhang, Huihui Liu, Wenfa Lin, Yongjiang Wu, Fei Qu, Daoshuan Yang, Binghong Huang, Ping Liu, Liangcheng Liu, Long Wang, Wenshuai Zhang
  • Publication number: 20250066522
    Abstract: A core-shell polymer comprises a core portion and a shell portion that at least partially covers the core portion. The core portion comprises a structural unit derived from a monomer represented by Formula I, and the shell portion comprises a structural unit derived from a monomer represented by Formula I, a structural unit derived from a monomer represented by Formula II, and a structural unit derived from a monomer represented by Formula III, wherein R1, R2 and R3 are each independently selected from hydrogen, fluorine, chlorine or C1-3 alkyl containing at least one fluorine atom, R4, R5, R6, R7, R8, R9 are each independently selected from hydrogen or substituted or unsubstituted C1-3 alkyl, and Ar is substituted or unsubstituted aryl.
    Type: Application
    Filed: November 15, 2024
    Publication date: February 27, 2025
    Inventors: Wei FENG, Huihui LIU, Chuying OUYANG, Chengdong SUN, Wenshuai ZHANG, Shuai ZHANG, Huanhuan ZUO, Yongbin ZHOU
  • Publication number: 20250066523
    Abstract: A BAB-type block copolymer comprises a B-block and an A-block, the B-block contains a structural unit represented by formula I, and the A-block contains one or more of a structural unit represented by formula II and a structural unit represented by formula III, where R1, R2 and R3 are each independently selected from one or more of hydrogen, fluorine, and C1-3 alkyl containing at least one fluorine atom, R4, R5 and R6 are each independently selected from hydrogen and substituted or unsubstituted C1-5 alkyl, and R7 is selected from carboxyl, an ester group, hydroxyl, amido, cyano, and a substituted or unsubstituted aromatic group.
    Type: Application
    Filed: November 8, 2024
    Publication date: February 27, 2025
    Inventors: Zipeng ZENG, Cheng LI, Huihui LIU, Jingming WANG
  • Publication number: 20250070266
    Abstract: This application discloses a battery cell, a battery, and an electric apparatus. The battery cell includes at least one electrode assembly. The electrode assembly includes a positive electrode plate, a negative electrode plate, a separator, and a porous insulation layer. The positive electrode plate, the separator, and the negative electrode plate are stacked and wound. At least a portion of the porous insulation layer is disposed in a bent region of the electrode assembly, and the porous insulation layer is disposed between the positive electrode plate and the separator or disposed between the negative electrode plate and the separator. Based on the above structure, the service life of the battery cell can correspondingly be prolonged, and the safety of the battery cell can correspondingly be improved.
    Type: Application
    Filed: November 11, 2024
    Publication date: February 27, 2025
    Applicant: Contemporary Amperex Technology (Hong Kong) Limited
    Inventors: Liya ZHAO, Wei Li, Shengwu Zhang, Huihui Liu, Wenfa Lin, Yongjiang Wu, Fei Qu, Daoshuan Yang, Binghong Huang, Ping Liu, Wenshuai Zhang, Long Wang, Liangcheng Liu
  • Publication number: 20250070180
    Abstract: A preparation method of a positive electrode slurry includes a first stirring, a second stirring, a third stirring and a fourth stirring. In the first stirring, a positive electrode active material, a conductive agent and a first binder are mixed and stirred to prepare a dry mixture. In the second stirring, a second binder and a solvent are mixed and stirred to prepare an adhesive solution. In the third stirring, the dry mixture and the adhesive solution are mixed and stirred to prepare a primary slurry. In the fourth stirring, a solvent and the primary slurry are mixed and stirred to prepare a positive electrode slurry. The weight average molecular weight of a polymer in the second binder is smaller than the weight average molecular weight of any polymer in the first binder.
    Type: Application
    Filed: November 8, 2024
    Publication date: February 27, 2025
    Inventors: Qi XING, Chengdong SUN, Huihui LIU, Lianwei DUAN
  • Publication number: 20250070181
    Abstract: A fluoropolymer includes a structural unit derived from a monomer of Formula I, a structural unit derived from an olefin monomer, and a structural unit derived from a monomer of Formula II. A molar content of the structural unit derived from the monomer of Formula I is in a range of 60% to 80% based on a total mole of the structural units in the fluoropolymer, wherein R1, R2 and R3 each are independently selected from hydrogen, fluorine, chlorine, or C1-3 alkyl containing at least one fluorine atom, and R4, R5 and R6 each are independently selected from hydrogen, or substituted or unsubstituted C1-5 alkyl.
    Type: Application
    Filed: November 8, 2024
    Publication date: February 27, 2025
    Inventors: Wei FENG, Huihui LIU, Chuying OUYANG, Chengdong SUN, Shuai ZHANG, Huanhuan ZUO, Wenshuai ZHANG, Yongbin ZHUO
  • Publication number: 20250070182
    Abstract: A preparation method of a positive electrode slurry includes a first stirring, a second stirring, a third stirring and a fourth stirring. In the first stirring, a positive electrode active material and a binder are mixed and stirred to prepare a dry mixture. In the second stirring, a binder and a solvent are mixed and stirred to prepare an adhesive solution. In the third stirring, the dry mixture and the adhesive solution are mixed and stirred to prepare a primary slurry. In the fourth stirring, a positive electrode active material, a conductive agent, a solvent and the primary slurry are mixed and stirred to prepare a positive electrode slurry. The binder used in the first stirring is the same as the binder used in the second stirring.
    Type: Application
    Filed: November 14, 2024
    Publication date: February 27, 2025
    Inventors: Qi XING, Chuying OUYANG, Chengdong SUN, Huihui LIU
  • Publication number: 20250015400
    Abstract: This application provides an expansion tape for battery packaging, where the expansion tape includes a substrate, an expansion layer, and a primer layer. The substrate has opposite first surface and second surface. The expansion layer is provided on the first surface of the substrate. The expansion layer includes an organic adhesive and a temperature expansion material. The temperature expansion material is a material capable of volume expansion after heat treatment. The primer layer is provided on the second surface of the substrate. The primer layer has adhesion.
    Type: Application
    Filed: September 24, 2024
    Publication date: January 9, 2025
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Liya ZHAO, Long WANG, Huihui LIU
  • Publication number: 20250007120
    Abstract: Disclosed is an adhesive tape for an electrode tab, which includes a base-material layer and an adhesive layer. The adhesive layer includes a thick region and a thin region which extend from a side edge of the adhesive tape in a width direction of the adhesive layer, the thick region is distributed along the side edge of the adhesive tape, and an adhesive layer thickness of the thick region is greater than an adhesive layer thickness of the thin region. A ratio of an area of the thin region to an area of the thick region is 1:0.02-0.25, optionally 1:0.025-0.18, and further optionally 1:0.0275-0.125. The adhesive tape covers an edge of the tab to fundamentally prevent contact between the tab and a battery cell body.
    Type: Application
    Filed: February 2, 2024
    Publication date: January 2, 2025
    Inventors: Long Wang, Huihui Liu, Siying Huang, Yaohui Wang
  • Publication number: 20240379964
    Abstract: This application provides a binder composition. The binder composition includes a first fluoropolymer and a second fluoropolymer, where the first fluoropolymer includes polyvinylidene fluoride with a weight-average molecular weight of 5000000-9000000, and a weight-average molecular weight of the second fluoropolymer is not greater than 600000. Featuring good processability, this binder composition, even added in small amounts, can provide electrode plates with great adhesion force and improve the cycling performance of a battery.
    Type: Application
    Filed: July 24, 2024
    Publication date: November 14, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Cheng LI, Zipeng ZENG, Huihui LIU, Jingming WANG
  • Publication number: 20240372100
    Abstract: The present application relates to a binder, a binder composition, a preparation method, a negative electrode slurry, a negative electrode plate, a secondary battery, a battery module, a battery pack and an electrical apparatus. The binder here comprises: an inner core material having a glass transition temperature of ?50° C. to 0° C., and a shell layer material located on at least part of the surface of the inner core material and having a glass transition temperature of 60° C. to 100° C.
    Type: Application
    Filed: July 17, 2024
    Publication date: November 7, 2024
    Inventors: Shuhua CHEN, Huihui LIU, Xinghui WANG, Wenmeng ZHANG
  • Publication number: 20240356036
    Abstract: This application provides a binder composition. The binder composition includes a first fluoropolymer and a second fluoropolymer, where the first fluoropolymer includes polyvinylidene fluoride with a weight-average molecular weight of 1,500,000-5,000,000, and a weight-average molecular weight of the second fluoropolymer does not exceed 600,000. The binder composition has good processability, achieves high adhesion force for the electrode plate when added in small amounts, and improves the cycling performance of the battery.
    Type: Application
    Filed: June 18, 2024
    Publication date: October 24, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Cheng LI, Zipeng ZENG, Huihui LIU, Jingming WANG
  • Publication number: 20240344753
    Abstract: A magnetic field fresh-keeping apparatus and an air-cooled refrigeration device. The magnetic field fresh-keeping apparatus comprises a drawer container, a drawer, a magnet assembly, and a waterproof structure. The front side of the drawer container has an opening. The drawer is slidably mounted within the drawer container. The magnet assembly comprises a first magnet and a second magnet disposed on opposite sides of the drawer container. The magnet mounting cavity comprises a first mounting cavity for accommodating the first magnet and a second mounting cavity for accommodating the second magnet, and the first mounting cavity and the second mounting cavity are both configured to allow an airflow to pass through so as to cool the first magnet and the second magnet. The waterproof structure is configured to waterproof the magnet assembly.
    Type: Application
    Filed: June 22, 2022
    Publication date: October 17, 2024
    Inventors: Yuning ZHANG, Bin FEI, Huihui LIU, Mengcheng LI, Yao Yi, Lisheng JI, Zilin CAO
  • Publication number: 20240339611
    Abstract: The present application provides a negative electrode plate, comprising a current collector and a negative electrode film layer, wherein the negative electrode film layer comprises a negative electrode active material, a copolymer formed by acrylonitrile and acrylic acid components, and a polyol. Optionally, the negative electrode film layer further comprises a polyether. The cross-linked polymer and polyether described in the present application can reduce the rebound rate of the negative electrode plate during cycling, thereby improving the capacity retention rate of the battery.
    Type: Application
    Filed: December 15, 2023
    Publication date: October 10, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Xinghui WANG, Huihui LIU, Wenmeng ZHANG, Shuhua CHEN
  • Patent number: 12107232
    Abstract: An embodiment of the present application provide an electrode assembly, a battery cell, a battery, and an electrode assembly manufacturing equipment and method. Among that, the electrode assembly includes a negative electrode plate and a positive electrode plate which form a bending region. The positive electrode plate includes bending portions located in the bending region, the bending portion includes a positive electrode current collecting layer and a positive active substance layer, and at least one side surface of the positive electrode current collecting layer is provided with the positive active substance layer in a thickness direction of the positive electrode plate. At least one positive active substance layer is provided with the barrier layer, at least a part of the barrier layer is intercalated in the positive active substance layer provided with the barrier layer, and coats at least a part of particles in the positive active substance layer.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: October 1, 2024
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Kai Wu, Huihui Liu, Zhonghong Li, Long Wang, Tuo Zheng, Huan Che
  • Publication number: 20240258520
    Abstract: Provided is a positive electrode slurry, a secondary battery, a battery module, a battery pack and a power consuming device. The positive electrode slurry comprises a positive electrode active substance, a conductive agent and a binder, wherein the binder comprises a polymer A, and the polymer A comprises a structural unit derived from a monomer containing a cyano group, a structural unit derived from a monomer containing an amide group, and a structure unit derived from a monomer containing an ester group. In the present invention, the polymer A is used as the binder of the positive electrode slurry, such that the stability and processability of the positive electrode slurry are improved, and the adhesive force of the positive electrode plate is increased.
    Type: Application
    Filed: March 11, 2024
    Publication date: August 1, 2024
    Inventors: Cheng Li, Huihui Liu
  • Publication number: 20240213484
    Abstract: The present application provides a binder, including a polyvinylidene fluoride having a weight average molar mass of 1.5 million to 5.0 million; optionally, the polyvinylidene fluoride has a weight average molar mass of 1.8 million to 3.2 million.
    Type: Application
    Filed: January 18, 2024
    Publication date: June 27, 2024
    Inventors: Lianwei Duan, Huihui Liu
  • Publication number: 20240213481
    Abstract: The present application provides a binder, a preparation method therefor, a secondary battery, a battery module, a battery pack, and a power consuming device. The binder comprises a polymer comprising structural units derived from a monomer represented by formula I and structural units derived from a monomer represented by formula II, wherein R1 and R2 are each independently selected from hydrogen or substituted or unsubstituted C1-5 alkyl, R3 is selected from hydrogen or methyl, and R4 is selected from substituted or unsubstituted C1-9 alkyl. The binder can be coated on the surface of the positive electrode active material, which is beneficial to maintain the structural integrity of the positive electrode active material during the cycling of the positive electrode plate, thereby improving the cycling performance of the battery.
    Type: Application
    Filed: February 27, 2024
    Publication date: June 27, 2024
    Inventors: Cheng Li, Huihui Liu, Lianwei Duan
  • Publication number: 20240194882
    Abstract: The present application provides a conductive binder, the conductive binder is formed by reacting polyimide with a conductive agent, and the conductive binder comprises a structural unit represented by formula I containing trifluoromethyl, wherein, R1 and R2 are each independently selected from substituted C6-C25 aromatic groups. For the conductive binder, in the case of a low content of conductive agent and a low amount of conductive binder added, it can greatly reduce the membrane resistance, improve the adhesion of the electrode plate and the cycling capacity retention rate of the battery, and reduce the internal resistance increase rate of the battery in the cycling process.
    Type: Application
    Filed: January 12, 2024
    Publication date: June 13, 2024
    Inventors: Cheng Li, Zipeng Zeng, Huihui Liu
  • Publication number: 20240124699
    Abstract: Provided are a binder composition, an electrode, a battery and a power consuming device. The binder composition comprises a fluoropolymer A and a copolymer B, wherein the copolymer B comprises a structural unit derived from a monomer containing a cyano group and a structural unit derived from a monomer containing an ester group. The binder of the present application has a strong bonding force, and the cycling performance of the secondary battery comprising same is excellent.
    Type: Application
    Filed: November 21, 2023
    Publication date: April 18, 2024
    Inventors: Lianwei Duan, Huihui Liu, Cheng Li, Wei Feng