Patents by Inventor Chengdong Sun
Chengdong Sun 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).
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Publication number: 20240120615Abstract: A binder includes a polymer and ceramic particles modified with silane coupling agent. The polymer contains structural units derived from a first-type monomer, a second-type monomer, and a third-type monomer, and a molar ratio of the first-type monomer, the second-type monomer, and the third-type monomer is (50 to 58):(40 to 44):(2 to 6). The first-type monomer is selected from one or more compounds of formula I, the second-type monomer is selected from one or more compounds of formula II, and the third-type monomer is selected from one or more compounds of formula III.Type: ApplicationFiled: November 6, 2023Publication date: April 11, 2024Inventors: Haiyang KANG, Lei LI, Yi ZHENG, Chengdong SUN, Shaohua AI
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Publication number: 20240097276Abstract: This application relates to the field of lithium battery technologies, and in particular, to a binder, a separator, and a lithium-ion battery using such separator, where the binder includes a terpolymer formed by copolymerization of a first monomer unit, a second monomer unit, and a third monomer unit that are specified.Type: ApplicationFiled: October 31, 2023Publication date: March 21, 2024Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Lei LI, Haiyang KANG, Yi ZHENG, Chengdong SUN, Shaohua AI
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Publication number: 20240014531Abstract: A fluorine-free insulating slurry includes a first resin selected from resins with a glass transition temperature of above 80° C. and a liquid absorbency in a standard electrolyte solution below 15%, a second resin selected from resins with a glass transition temperature below ?5° C., an inorganic filler, and an organic solvent.Type: ApplicationFiled: July 7, 2023Publication date: January 11, 2024Inventors: Shaohua AI, Chengdong SUN, Yi ZHENG
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Publication number: 20230299419Abstract: The present application provides a separator, a secondary battery, a battery module, a battery pack, and a power consumption apparatus. The separator may include a porous base film and a bonding layer coated on one or both faces of the porous base film. The bonding layer may be composed of ethylene carbonate and an optional nucleating agent.Type: ApplicationFiled: May 26, 2023Publication date: September 21, 2023Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Yuqun ZENG, Chuying OUYANG, Chengdong SUN, Yi ZHENG, Haiyang KANG
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Publication number: 20230207815Abstract: This application provides an insulating slurry and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The insulating slurry may include a resin, an inorganic filler, and an organic solvent, where the resin is selected from polyfluorinated olefin resins prepared in a suspension polymerization method, and the inorganic filler is a two-dimensional inorganic material. In this application, both a coating velocity of the insulating slurry and safety performance of the secondary battery can be improved.Type: ApplicationFiled: February 14, 2023Publication date: June 29, 2023Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Shaohua AI, Yi ZHENG, Chengdong SUN
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Publication number: 20220367921Abstract: The embodiments of the application provide an electrode assembly and a manufacturing method and manufacturing system therefor, a battery cell and a battery. The electrode assembly includes a negative pole piece and a positive pole piece, the negative pole piece and the positive pole piece are wound to form a winding structure including a bending region and a straight region. Both the negative pole piece and the positive pole piece include a plurality of bent portions located in the bent area and a plurality of straight portions located in the straight area. At least one of the bent portions of the positive pole piece is a first bent portion, and/or at least one of the bent portions of the negative pole piece is a second bent portion.Type: ApplicationFiled: July 27, 2022Publication date: November 17, 2022Inventors: Yi Zheng, Haiyang Kang, Hu Xu, Chengdong Sun
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Patent number: 10858551Abstract: A bonding agent includes: structural units represented by Formula I, Formula II, Formula III, and Formula IV: where each of R1, R2, R3, and R4 is independently selected from the group consisting of hydrogen, and C1-8 straight-chain or branched alkyl groups substituted or not substituted by a substituting group, each of R5, R6, and R7 is independently selected from the group consisting of hydrogen, and C1-6 straight-chain or branched alkyl groups substituted or not substituted by a substituting group, R8 is selected from C1-15 alkyl groups substituted or not substituted by a substituting group, each of R9, R10, and R11 is independently selected from the group consisting of hydrogen, and C1-6 straight-chain or branched alkyl groups substituted or not substituted by a substituting group.Type: GrantFiled: August 28, 2018Date of Patent: December 8, 2020Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Ze Zhong, Chengdong Sun, Huihui Liu, Xinghui Wang, Zengbin Wei
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Patent number: 10673027Abstract: The present disclosure provides a pouch-type secondary battery, which comprises an electrode assembly, a packaging film. The packaging film comprises a first receiving portion, a second receiving portion, a third receiving portion. The third receiving portion is parallel to the first receiving portion, a portion of the electrode tab extends out of the third receiving portion. A joint location between the second receiving portion and the first receiving portion and a joint location between the second receiving portion and the third receiving portion each are formed with a bending angle, the bending angles are equal and each range from 130° to 160°. Because the bending angles in the range are relatively large, when the packaging film is tightly pressed, there is no need to apply a too large pressure on the second receiving portion and the third receiving portion, so the electrode tab is not easily damaged or even ruptured.Type: GrantFiled: September 21, 2018Date of Patent: June 2, 2020Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITEDInventors: Zengbin Wei, Chengdong Sun, Dong Duan, Xinghui Wang, Xiang Li
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Patent number: 10240073Abstract: The present disclosure relates to a lithium-ion battery bonding agent and a lithium-ion battery comprising the same. The bonding agent may be a polymer comprising structural units represented by Formula I, Formula II, Formula III, and Formula IV, and has an average molecular weight of 500,000 to 1.2 million. The bonding agent may be incorporated into at least one of a positive film, a negative film, a separator, and an electrolyte in the battery. The bonding agent can significantly improve the flexibility of the positive film, avoid processability and battery performance issues caused by the electrode film being too brittle, and help improve the compact density and battery energy density.Type: GrantFiled: October 18, 2016Date of Patent: March 26, 2019Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Ze Zhong, Chengdong Sun, Huihui Liu, Xinghui Wang, Zengbin Wei
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Publication number: 20190067685Abstract: The present disclosure provides a negative electrode slurry, a negative electrode plate and an electrochemical energy storage device. The negative electrode slurry comprises a solvent and a solid component dispersed in the solvent. The solid component comprises a negative electrode active material, a water-soluble binder and a dispersant. The negative electrode active material comprises a carbon-type active material. The dispersant comprises an A dispersant and a B dispersant, the A dispersant is a cellulose-type dispersant, the B dispersant is at least one of poly(acrylic acid)-type dispersant, polyacrylate-type dispersant and polyacrylamide-type dispersant.Type: ApplicationFiled: July 27, 2018Publication date: February 28, 2019Inventors: Zhongsi Zhu, Ze Zhong, Chengdong Sun, Yi Zheng, Lingyun Feng, Hang Zhou, Long Wang
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Publication number: 20190027712Abstract: The present disclosure provides a pouch-type secondary battery, which comprises an electrode assembly, a packaging film. The packaging film comprises a first receiving portion, a second receiving portion, a third receiving portion. The third receiving portion is parallel to the first receiving portion, a portion of the electrode tab extends out of the third receiving portion. A joint location between the second receiving portion and the first receiving portion and a joint location between the second receiving portion and the third receiving portion each are formed with a bending angle, the bending angles are equal and each range from 130° to 160°. Because the bending angles in the range are relatively large, when the packaging film is tightly pressed, there is no need to apply a too large pressure on the second receiving portion and the third receiving portion, so the electrode tab is not easily damaged or even ruptured.Type: ApplicationFiled: September 21, 2018Publication date: January 24, 2019Inventors: Zengbin WEI, Chengdong SUN, Dong DUAN, Xinghui WANG, Xiang LI
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Publication number: 20180362813Abstract: A bonding agent includes: structural units represented by Formula I, Formula II, Formula III, and Formula IV: where each of R1, R2, R3, and R4 is independently selected from the group consisting of hydrogen, and C1-8 straight-chain or branched alkyl groups substituted or not substituted by a substituting group, each of R5, R6, and R7 is independently selected from the group consisting of hydrogen, and C1-6 straight-chain or branched alkyl groups substituted or not substituted by a substituting group, R8 is selected from C1-15 alkyl groups substituted or not substituted by a substituting group, each of R9, R10, and R11 is independently selected from the group consisting of hydrogen, and C1-6 straight-chain or branched alkyl groups substituted or not substituted by a substituting group.Type: ApplicationFiled: August 28, 2018Publication date: December 20, 2018Inventors: Ze Zhong, Chengdong Sun, Huihui Liu, Xinghui Wang, Zengbin Wei
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Publication number: 20170204308Abstract: The present disclosure relates to the field of lithium-ion battery materials, and specifically relates to a lithium-ion battery bonding agent and a lithium-ion battery comprising said bonding agent. The bonding agent is a polymer comprising structural units represented by Formula I, Formula II, Formula III, and Formula IV, and has a number average molecular weight of 500,000 to 1.2 million. The present disclosure further relates to a lithium-ion battery, comprising a positive film, a negative film, a separator, and an electrolyte, the positive film comprising the bonding agent according to the present disclosure. The bonding agent according to the present disclosure can significantly improve the flexibility of a positive film, avoid processability and battery performance issues caused by the electrode film being too brittle, and help improve the compact density and battery energy density.Type: ApplicationFiled: October 18, 2016Publication date: July 20, 2017Inventors: Ze ZHONG, Chengdong SUN, Huihui LIU, Xinghui WANG, Zengbin WEI
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Publication number: 20160133936Abstract: The present disclosure provides a negative material layer, which comprises negative active material, conductive agent, binder material and thickening agent. A weight percentage of the binder material in the negative material layer is not more than 2%. The binder material comprises a polymer polymerized from a styrene monomer, an acrylic ester monomer and an acrylic acid monomer. The negative material layer has a small amount of binder material, an excellent ion conductivity; the lithium-ion battery using the negative material layer can avoid lithium precipitation from occurring on a surface of the negative electrode and have an excellent safety performance and an excellent cycle performance in the case of quick and high rate charge.Type: ApplicationFiled: October 30, 2015Publication date: May 12, 2016Inventors: Zheng CAO, Qiang Zheng, Shengwei Wang, Chengdong Sun, Hongguang Shen, Chao Gao