Patents by Inventor Jianrui Yang

Jianrui Yang 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: 12132226
    Abstract: This application relates to a separator, including a substrate and a coating layer provided on at least one surface of the substrate. The coating layer includes organic particles and inorganic particles, the organic particles include first-type organic particles, the inorganic particles form an inorganic particle layer, and the first-type organic particles are embedded into the inorganic particle layer and form bulges on a surface of the inorganic particle layer. A number-based median particle size of the first-type organic particles is ?12 ?m, and a ratio of an average height of the bulges to a thickness of the inorganic particle layer is ?4. This application further relates to a separator preparation method, a secondary battery containing such separator, and a related battery module, battery pack, and apparatus.
    Type: Grant
    Filed: February 24, 2023
    Date of Patent: October 29, 2024
    Assignee: Contemporary Amperex Technology (Hong Kong) Limited
    Inventors: Yuanyuan Lan, Jianrui Yang, Haiyi Hong, Cong Cheng, Na Liu, Haizu Jin
  • Publication number: 20240322372
    Abstract: The present application provides a separator and a preparation method thereof, an electrochemical device, an electrochemical apparatus and a powered device. The separator comprises a base film, the base film has a tensile energy per unit thickness of ?1.8 J/10 ?m in both MD direction and TD direction, and an elongation of ?150% in both MD direction and TD direction, and the thickness of the base film is 2 ?m˜40 ?m.
    Type: Application
    Filed: November 26, 2023
    Publication date: September 26, 2024
    Inventors: Jianrui Yang, Fenggang Zhao, Lianguang Wang, Tianle Yang
  • Publication number: 20240313352
    Abstract: This application discloses a separator and a preparation method therefor, a battery, and an electric apparatus. The separator includes a substrate and a pressure-sensitive coating, where the pressure-sensitive coating is formed on at least a portion of surface of the substrate. The pressure-sensitive coating includes composite particles and a first plasticizer. The composite particles form bulges on surface of the coating, and the composite particles include polyacrylate particles and inorganic particles. The inorganic particle is present between at least two of the polyacrylate particles, and solubility parameter of the first plasticizer and solubility parameter of the composite particles have a difference with an absolute value of 0.3 MPa1/2-4 MPa1/2.
    Type: Application
    Filed: May 8, 2024
    Publication date: September 19, 2024
    Inventors: Xiaonan Cheng, Haiyi Hong, Yanyun Ma, Jianrui Yang, Yi Zheng, Chengdong Sun
  • Publication number: 20240304819
    Abstract: This application discloses a binder and a preparation method thereof, a separator, an electrode plate, an electrode assembly, a battery cell, a battery, and an electric apparatus, and relates to the field of battery technologies. The binder includes a coating layer and a core disposed in the coating layer, where the coating layer includes a polyacrylate copolymer, and the core includes ceramic. The binder is applied onto the separator and used in the battery, providing strong adhesion. This enhances the pre-cold pressing adhesion force and hardness of the battery cell, and reduces electrochemical impedance, thus improving the cycling performance of the battery.
    Type: Application
    Filed: May 14, 2024
    Publication date: September 12, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Xiaonan Cheng, Haiyi Hong, Lei Li, Jianrui Yang, Peng Wang, Yi Zheng, Chengdong Sun
  • Publication number: 20240300763
    Abstract: A separator roll, an electrode assembly, a battery cell, a battery, and an electric device are provided. The separator roll includes a separator body and a warning coating. The separator body has a head end and a tail end in a length direction and is constructed to be capable of winding in the length direction to form the separator roll with the tail end as a roll core. The warning coating is provided on the separator body. The warning coating is configured to be spaced from the tail end by a first preset length. In this way, the warning coating provides a warning in advance for the position of the tail end of the separator body on which the warning coating is located.
    Type: Application
    Filed: May 20, 2024
    Publication date: September 12, 2024
    Inventors: Chong Xu, Cheng Li, Jianrui Yang
  • Publication number: 20240304945
    Abstract: This application discloses a separator and a preparation method therefor, a battery, and an electric apparatus. The coating is formed on at least part of a surface of the substrate, the coating includes composite particles, first inorganic particles, and a binder, the composite particles form bulges on a surface of the coating, the composite particles include polyacrylate particles and ion-conducting particles, and the ion-conducting particle is present between at least two polyacrylate particles. A mass ratio of the first inorganic particles to the ion-conducting particles is 1:0.007-0.06.
    Type: Application
    Filed: May 8, 2024
    Publication date: September 12, 2024
    Inventors: Yanyun Ma, Haiyi Hong, Xiaonan Cheng, Peng Wang, Lei Chao, Jianrui Yang, Yi Zheng, Chengdong Sun
  • Publication number: 20240274978
    Abstract: This application discloses a separator and a preparation method thereof, a battery, and an electric apparatus. The separator includes a substrate and a coating, where the coating is formed on at least a portion of surface of the substrate, and the coating includes composite particles and a binder. The composite particles form bulges on surface of the coating, and the composite particles include polyacrylate particles and inorganic particles. The inorganic particle is present between at least two of the polyacrylate particles. Crosslinking degree a of the composite particles and mass swelling degree b thereof in an electrolyte satisfy a/b?1 and a?75%.
    Type: Application
    Filed: April 10, 2024
    Publication date: August 15, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Haiyi HONG, Xiaonan CHENG, Yanyun MA, Jianrui YANG, Peng WANG, Lei CHAO, Yi ZHENG, Chengdong SUN
  • Publication number: 20240266673
    Abstract: This application relates to a separator, including a substrate and a coating layer provided on at least one surface of the substrate. The coating layer includes organic particles and inorganic particles, the organic particles include first-type organic particles, the inorganic particles form an inorganic particle layer, and the first-type organic particles are embedded into the inorganic particle layer and form bulges on a surface of the inorganic particle layer. A number-based median particle size of the first-type organic particles is ?12 ?m, and a ratio of an average height of the bulges to a thickness of the inorganic particle layer is ?4. This application further relates to a separator preparation method, a secondary battery containing such separator, and a related battery module, battery pack, and apparatus.
    Type: Application
    Filed: April 2, 2024
    Publication date: August 8, 2024
    Inventors: Yuanyuan Lan, Jianrui Yang, Haiyi Hong, Cong Cheng, Na Liu, Haizu Jin
  • Publication number: 20240250315
    Abstract: A binder includes a polyacrylate copolymer and a lithium-containing compound. A preparation method of a binder includes adding monomers of a polyacrylate copolymer to a first emulsifier solution to obtain a pre-emulsion, adding an initiator to the pre-emulsion for reaction to obtain a reaction solution, and adding a lithium-containing substance to the reaction solution to adjust pH value to 7 to 8 and performing filtering to obtain the binder.
    Type: Application
    Filed: April 4, 2024
    Publication date: July 25, 2024
    Inventors: Xiaonan CHENG, Haiyi HONG, Lei LI, Jianrui YANG, Haiyang KANG, Yi ZHENG, Chengdong SUN
  • Publication number: 20240218169
    Abstract: A binder includes a core layer structure and a shell layer structure provided on a surface of the core layer structure and fully enveloping the core layer structure. The core layer structure includes a polyacrylate polymer, and the shell layer structure includes a polyvinylidene fluoride polymer.
    Type: Application
    Filed: March 20, 2024
    Publication date: July 4, 2024
    Inventors: Lei LI, Haiyi HONG, Xiaonan CHENG, Jianrui YANG, Peng WANG, Yi ZHENG, Chengdong SUN
  • Publication number: 20240222791
    Abstract: This application relates to the field of battery technologies, and in particular, to a binder and a preparation method thereof, and a separator, electrode assembly, battery cell, battery, and electric apparatus containing such binder. The binder includes a core layer structure and a shell layer structure provided on a surface of the core layer structure, where the core layer structure includes a polyacrylate polymer, and the shell layer structure includes a polyvinylidene fluoride polymer.
    Type: Application
    Filed: February 9, 2024
    Publication date: July 4, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Lei LI, Haiyi HONG, Xiaonan CHENG, Jianrui YANG, Haiyang KANG, Yi ZHENG, Chengdong SUN
  • Publication number: 20240222795
    Abstract: This application relates to the field of battery technologies, and in particular, to a binder and a preparation method thereof, and a separator, electrode assembly, battery cell, battery, and electric apparatus containing such binder. The binder includes a core layer structure and a shell layer structure provided on surface of the core layer structure, where the core layer structure includes a polyvinylidene fluoride polymer, and the shell layer structure includes a polyacrylate polymer. Polyvinylidene fluoride is a homopolymer with a crystallinity of about 50%, resulting in insufficient adhesion force.
    Type: Application
    Filed: March 1, 2024
    Publication date: July 4, 2024
    Inventors: Haiyi Hong, Lei Li, Xiaonan Cheng, Jianrui Yang, Peng Wang, Yi Zheng, Chengdong Sun
  • Publication number: 20240162566
    Abstract: A separator includes a substrate and a coating. The coating is formed on at least a portion of surface of the substrate. The coating includes composite particles and a binder. The composite particles form bulges on surface of the coating. The composite particles include polyacrylate particles and first inorganic particles. The first inorganic particle is present between at least two of the polyacrylate particles.
    Type: Application
    Filed: January 22, 2024
    Publication date: May 16, 2024
    Inventors: Haiyi HONG, Yanyun MA, Xiaonan CHENG, Lei CHAO, Peng WANG, Chongwang HAN, Yuxia LI, Jianrui YANG, Yi ZHENG, Chengdong SUN
  • Publication number: 20240145868
    Abstract: Provided a separator, a preparation method thereof, and a secondary battery, a battery module, a battery pack, and an electric apparatus containing such separator. The separator includes: a substrate and a coating applied on at least one surface of the substrate, where the coating includes 40 wt % to 90 wt % first organic particles, 2 wt % to 15 wt % pressure-sensitive binder, and optionally 0 wt % to 50 wt % second organic particles. The first organic particles include an organic polymer and an inorganic substance. The pressure-sensitive binder includes an organic polymer and a plasticizer. The separator has good ionic conductivity and adhesion performance at room temperature, is not adhered under a pressure of 1 MPa or below and is significantly adhered under a pressure of 2 MPa or above, which can significantly improve structural stability and ionic conductivity of an electrochemical device while satisfying requirements for yield rate of production and kinetic performance of a battery cell.
    Type: Application
    Filed: January 11, 2024
    Publication date: May 2, 2024
    Inventors: Haiyi Hong, Jianrui Yang, Haiyang Kang, Chengdong Sun, Yi Zheng, Lei Chao
  • Publication number: 20240120614
    Abstract: The present application provides a separator for a secondary battery and a preparation method thereof, as well as a secondary battery and an electrical apparatus including the separator. The separator of the present application includes a porous substrate and a coating disposed on at least one surface of the porous substrate. The coating includes nanocellulose, the nanocellulose includes modifying groups, and the modifying groups include at least one of sulfonic acid groups, boric acid groups, and phosphoric acid groups.
    Type: Application
    Filed: October 16, 2023
    Publication date: April 11, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Ming XU, Jianrui YANG, Manxiang WEI
  • Publication number: 20240079725
    Abstract: The present application provides a separator, which may include a substrate and a coating provided on at least one surface of the substrate, the coating including inorganic particles, first and second organic particles, organic-inorganic hybrid composite compound particles, and a first binder; where the first organic particles and the second organic particles may be embedded in the inorganic particles and the organic-inorganic hybrid composite compound particles and form bulges on a surface of the coating; the first organic particles and the second organic particles each may be independently one or more polymers containing one or more groups selected from: halogen, a phenyl group, an epoxy group, a cyano group, an ester group, an amide group, a hydroxyl group, a carboxyl group, a sulfonyl ester group, and a pyrrolidone group; and the first binder may include one or more linear copolymers containing a hydroxyl group and a carboxylate moiety.
    Type: Application
    Filed: November 6, 2023
    Publication date: March 7, 2024
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Haiyi HONG, Jianrui YANG
  • Publication number: 20230307786
    Abstract: A separator, a method for preparing the separator, a secondary battery (5) containing the separator, and an electrical device are described. The separator includes: a porous separator substrate; and a pressure-sensitive coating applied onto at least one surface of the separator substrate. The pressure-sensitive coating includes a first organic particle at a mass percent of 40 wt % to 90 wt %, a pressure-sensitive binder polymer at a mass percent of 10 wt % to 20 wt %, and optionally a second organic particle at a mass percent of 0 wt % to 50 wt %. The separator is of high ion-conductivity and high bonding performance at a normal temperature. The separator does not exert a bonding action under a pressure less than or equal to 1 MPa, but exerts a substantial bonding action under a pressure greater than or equal to 2 MPa, thereby significantly improving structural stability and ionic conductance of the electrochemical device.
    Type: Application
    Filed: June 1, 2023
    Publication date: September 28, 2023
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Haiyi HONG, Jianrui YANG
  • Publication number: 20230307790
    Abstract: A separator, comprising a substrate and a coating provided on at least one surface of the substrate are provided. In some embodiments, the coating comprises inorganic particles and organic particles, the organic particles comprise first organic particles and second organic particles both embedded in the inorganic particles and forming protrusions on the surface of the coating; the first organic particles are secondary particles, and the number of the first organic particles in the coating is denoted as A; the second organic particles are primary particles and the number of the second organic particles in the coating is denoted as B; with the separator satisfying: 0.05?A/B<1. The present application also relates to a method for preparing the separator, as well as a secondary battery comprising the separator, a battery module, a battery pack and a device.
    Type: Application
    Filed: May 17, 2023
    Publication date: September 28, 2023
    Inventors: Haiyi Hong, Jianrui Yang, Yuanyuan Lan, Cong Cheng, Na Liu, Haizu Jin
  • Publication number: 20230207963
    Abstract: This application relates to a separator, including a substrate and a coating layer provided on at least one surface of the substrate. The coating layer includes organic particles and inorganic particles, the organic particles include first-type organic particles, the inorganic particles form an inorganic particle layer, and the first-type organic particles are embedded into the inorganic particle layer and form bulges on a surface of the inorganic particle layer. A number-based median particle size of the first-type organic particles is ?12 ?m, and a ratio of an average height of the bulges to a thickness of the inorganic particle layer is ?4. This application further relates to a separator preparation method, a secondary battery containing such separator, and a related battery module, battery pack, and apparatus.
    Type: Application
    Filed: February 24, 2023
    Publication date: June 29, 2023
    Inventors: Yuanyuan LAN, Jianrui Yang, Haiyi Hong, Cong Cheng, Na Liu, Haizu Jin
  • Publication number: 20230024649
    Abstract: The present application relates to a separator, comprising a substrate and a coating formed on at least one surface of the substrate; wherein the coating comprises inorganic particles and organic particles, the organic particles comprise first organic particles and second organic particles; the first organic particles and the second organic particles are embedded in the inorganic particles and form protrusions on the surface of the coating; the first organic particles have a number-average particle size of >10 ?m, and the second organic particles have a number-average particle size of 2 ?m-10 ?m. The present application also relates to a secondary battery comprising the separator, a device comprising the secondary battery and a method for preparing the separator.
    Type: Application
    Filed: September 22, 2022
    Publication date: January 26, 2023
    Inventors: Haiyi HONG, Cong CHENG, Yuanyuan LAN, Jianrui YANG, Na LIU, Haizu JIN