Patents by Inventor Na Liu

Na 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: 20250246622
    Abstract: A positive active material has a chemical formula of Li1+a[NixCoyMnzM1bM2c]O2, where, 0.05<a<0.5, ??x<1, 0?y<?, 0?z<?, 0<b<0.1, 0<c<0.1, x+y+z+b+c=1, M1 is one or more elements from Mo, Zr, W, Sb, Nb, Te or Ga, and M2 is one or more elements from Mg, Al, Ca or Ti. The positive active material includes a lithium-rich layer extending from particle surface to interior of the particle, and in a cross section passing through the geometric center of a single particle of the positive active material, a ratio of an average Li element content per unit area in the lithium-rich layer to an average Li element content per unit area in a non-lithium-rich layer is (>1 to 1.5):1.
    Type: Application
    Filed: March 19, 2025
    Publication date: July 31, 2025
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Qiyu ZHANG, Qi WU, Qiang CHEN, Na LIU, Jingpeng FAN
  • Publication number: 20250246623
    Abstract: The present application provides a positive electrode material comprising a substrate particle of formula (I): Li1+a[NixCoyMnzMbWc]O2??(I) wherein the M is selected from one or more of Mo, Zr, Al, Ti, Sb, Nb, Te, Mg, Ca, Zn and Sr, 0.6<x<1, 0<y<0.4, 0<z<0.4, 0<a<0.2, 0<b<0.1, 0<c<0.1, and x+y+z+b+c=1; and the W is enriched at the grain boundary of the substrate particle.
    Type: Application
    Filed: April 21, 2025
    Publication date: July 31, 2025
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Kai WU, Qiyu ZHANG, Qi WU, Qiang CHEN, Na LIU
  • Publication number: 20250239728
    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 first organic particles embedded in the inorganic particles and forming protrusions on the surface of the coating, and the first organic particles have a primary particle morphology and a number-average particle size of ?2 ?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: April 9, 2025
    Publication date: July 24, 2025
    Inventors: Cong Cheng, Haiyi Hong, Jianrui Yang, Yuanyuan Lan, Na Liu, Haizu Jin
  • Publication number: 20250239729
    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: April 9, 2025
    Publication date: July 24, 2025
    Inventors: Haiyi Hong, Cong Cheng, Yuanyuan Lan, Jianrui Yang, Na Liu, Haizu Jin
  • Publication number: 20250236537
    Abstract: A positive electrode material, a preparation method of same, a positive electrode plate, a secondary battery, and an electrical device are described. The positive electrode material includes a ternary positive electrode substrate and optionally a coating layer. The coating layer coats a surface of the ternary positive electrode substrate. The ternary positive electrode substrate includes Li, Ni, Al, and an M element. The M element includes a combination of one or more of Mn, Co, Ti, Zr, W, Nb, Mo, Si, Mg, B, Cr, or Ta. A volume-based particle size distribution curve of the positive electrode material is a bimodal curve.
    Type: Application
    Filed: April 9, 2025
    Publication date: July 24, 2025
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Qiyu ZHANG, Qi WU, Qiang CHEN, Chongheng SHEN, Na LIU, Jingpeng FAN
  • Publication number: 20250233153
    Abstract: A composite positive electrode material and a preparation method thereof, a positive electrode plate, a battery, and an electrical device. The composite positive electrode material includes a composite formed by a positive active material and carbon. In a particle structure of the composite, a mass ratio of a carbon content inside to a carbon content on a surface is (0.8 to 2):1.
    Type: Application
    Filed: April 4, 2025
    Publication date: July 17, 2025
    Inventors: Xiaojing LI, Changfeng BIE, Huan NI, Na LIU
  • Publication number: 20250219082
    Abstract: A positive active material is provided. In some embodiments, the positive material includes: a substrate and a coating layer coating the substrate, wherein the coating layer includes a fast ion conductor layer and a carbon coating layer, the substrate includes more than one compound of formula (I): LiFe1-aM1aPO4 formula (I), in formula (I), M1 is more than one selected from Cu, Mn, Cr, Zn, Pb, Ca, Co, Ni, Sr, Nb and Ti, and 0?a?0.01; the fast ion conductor layer includes a fast ion conductor of a NASICON structure shown in formula (II), Li3-bFe2-bM2b(PO4)3 formula (II), in formula (II), M2 is more than one selected from Ti, Zr, Hf, Ge and Sn with valence of +4, and 0?b?1.
    Type: Application
    Filed: March 19, 2025
    Publication date: July 3, 2025
    Inventors: Xue Leng, Hongyu Liu, Changfeng Bie, Na Liu, Wanqing Cai
  • Patent number: 12347859
    Abstract: This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm, or LixNiyCozMkMepOrAm with a coating layer on its surface; and the positive active material is single crystal or quasi-single crystal particles, and a particle size Dn10 of the positive active material satisfies: 0.3 ?m?Dn10?2 ?m. In this application, particle morphology of the positive active material and an amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte solution, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating an energy density, cycle performance, and rate performance of the electrochemical energy storage apparatus.
    Type: Grant
    Filed: May 22, 2023
    Date of Patent: July 1, 2025
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Rui Du, Yongchao Liu, Chongheng Shen, Sihui Wang, Na Liu
  • Publication number: 20250206629
    Abstract: A lithium-rich metal oxide and a preparation method thereof, a positive electrode plate, a battery cell, and a battery are described. The lithium-rich metal oxide includes a lithium-rich metal oxide core and residual lithium on a surface of the lithium-rich metal oxide core. Based on 100 wt % as a total mass of the lithium-rich metal oxide, a mass percent k of the residual lithium satisfies: k?0.5 wt %, and a lithium-ion diffusion coefficient D of the lithium-rich metal oxide satisfies: D?1.0×10?15 cm2/s. When applied to a battery cell, the lithium-rich metal oxide of this application improves performance of the battery cell.
    Type: Application
    Filed: March 7, 2025
    Publication date: June 26, 2025
    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Bangrun Wang, Xingwen ZHANG, Na LIU
  • Publication number: 20250201834
    Abstract: A spinel-type lithium and manganese containing composite oxide has a chemical composition of Li1+xMyMn2-yO4-k, where ?0.1?x?0.2; 0?y?0.3; 0?k?0.2. M includes at least one of B, Na, Mg, Al, Si, P, K, Ti, V, Cr, Fe, Co, Ni, Cu, Zr, Mo, W, and Te. Crystal grains of the spinel-type lithium and manganese containing composite oxide have a quasi-spherical morphology. A surface of a single crystal grain is formed by a continuous curved surface connected to a finite surface with a profile circumscribed by the continuous curved surface, or is a continuous curved surface. A quantity of observable finite surfaces with the profile circumscribed by the continuous curved surface in an SEM image of a single crystal grain is ?5. A ratio of a diameter dA of the finite surface with the profile circumscribed by the continuous curved surface to a diameter dV of the crystal grain satisfies dA/dV?0.5, optionally dA/dV?0.3.
    Type: Application
    Filed: March 6, 2025
    Publication date: June 19, 2025
    Inventors: Zhenguo ZHANG, Sihui WANG, Xiang YIN, Zhijie YAO, Na LIU
  • Patent number: 12332770
    Abstract: Disclosed are techniques for automated locating of user interface elements during graphical user interface testing. When a graphical user interface (GUI) is received for testing, images of the GUI are inputted to a machine learning algorithm, where image processing techniques are applied to identify groups of user interface elements and their constituent elements. Multi-dimensional index values are assigned to groups and elements corresponding to their positions within the GUI. Automated testing of the user interface elements of the GUI is performed by locating the user interface elements by their index values. If an element is not found, a scrolling technique is applied to generate an expanded virtual GUI of one or more groups of user interface elements, and the machine learning algorithm refreshes the index values using the expanded virtual GUI.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: June 17, 2025
    Assignee: International Business Machines Corporation
    Inventors: Jin Shi, Lu Chen, Tang Xue Bo, Ping Yang, Meng Qi Chen, Rui Na Liu
  • Patent number: 12300816
    Abstract: The present application discloses a positive electrode active material, a positive electrode plate, a lithium-ion secondary battery, and an apparatus. The positive electrode active material satisfies a chemical formula Li1+x(NiaCobMnc)1-dMdO2-yAy, wherein M is one or more selected from Zr, Sr, B, Ti, Mg, Sn and Al, A is one or more selected from S, N, F, Cl, Br and I, ?0.01?x?0.2, 0.12?b/c?0.9, 0.002?b×c/a2?0.23, a+b+c=1, 0?d?0.1, and 0?y<0.2; and an interval particle size distribution curve of the positive electrode active material has a full width at half maximum DFW of from 4 ?m to 8 ?m. The positive electrode active material provided in the present application has relatively low cobalt content and relatively high cycle life and capacity performance.
    Type: Grant
    Filed: March 8, 2023
    Date of Patent: May 13, 2025
    Assignee: Contemporary Amperex Technology (HONG KONG) Limited
    Inventors: Qifeng Li, Qilan Zhang, Na Liu
  • Patent number: 12300851
    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: Grant
    Filed: September 22, 2022
    Date of Patent: May 13, 2025
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Haiyi Hong, Cong Cheng, Yuanyuan Lan, Jianrui Yang, Na Liu, Haizu Jin
  • Patent number: 12300850
    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 first organic particles embedded in the inorganic particles and forming protrusions on the surface of the coating, and the first organic particles have a primary particle morphology and a number-average particle size of ?2 ?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: Grant
    Filed: September 9, 2022
    Date of Patent: May 13, 2025
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
    Inventors: Cong Cheng, Haiyi Hong, Jianrui Yang, Yuanyuan Lan, Na Liu, Haizu Jin
  • Publication number: 20250150911
    Abstract: The present disclosure describes methods, systems, and devices for configuring a measurement object in a wireless communication network. A plurality of candidate serving cell measurement object (MO) identifiers (IDs) are provided from a centralized unit (CU) to a distributed unit (DU). A a serving cell MO is selected by the DU from the plurality of candidate serving cell MO IDs to be used for a user equipment (UE). A per-bandwidth part (BWP) serving cell MO configuration is configured by the DU according to the serving cell MO.
    Type: Application
    Filed: January 10, 2025
    Publication date: May 8, 2025
    Inventors: Jianxun AI, Jing LIU, Na LIU, Mengjie ZHANG, Zhuang LIU
  • Patent number: 12288880
    Abstract: A positive active material is provided. In some embodiments, the positive material includes: a substrate and a coating layer coating the substrate, wherein the coating layer includes a fast ion conductor layer and a carbon coating layer, the substrate includes more than one compound of formula (I): LiFe1-aM1aPO4 formula (I), in formula (I), M1 is more than one selected from Cu, Mn, Cr, Zn, Pb, Ca, Co, Ni, Sr, Nb and Ti, and 0?a?0.01; the fast ion conductor layer includes a fast ion conductor of a NASICON structure shown in formula (II), Li3-bFe2-bM2b(PO4)3 formula (II), in formula (II), M2 is more than one selected from Ti, Zr, Hf, Ge and Sn with valence of +4, and 0?b?1.
    Type: Grant
    Filed: September 25, 2022
    Date of Patent: April 29, 2025
    Assignee: Contemporary Amperex Technology (Hong Kong) Limited
    Inventors: Xue Leng, Hongyu Liu, Changfeng Bie, Na Liu, Wanqing Cai
  • Publication number: 20250118737
    Abstract: The present application provides a positive electrode active material comprising a matrix material and a coating layer on the surface of the matrix material, wherein the matrix material has a chemical formula of LiNixCoyMnzMaM?bO2, wherein M=at least one of Zr, Y, Al, Ti, W, Sr, Ta, Sb, Nb, Na, K, Ca or Ce, M?=at least one of N, F, S or Cl, 0.80?x?1.0, 0?y?0.20, 0?z?0.02, 0?a?0.02, and b=1-x-y-z-a; and the coating layer is a boron-containing ternary alloy or a boron-containing ternary alloy oxide. The present application further provides a method for preparing the positive electrode active material, a positive electrode plate comprising the positive electrode active material, a secondary battery, a battery module, a battery pack and a power consuming device.
    Type: Application
    Filed: December 17, 2024
    Publication date: April 10, 2025
    Inventors: Chongheng Shen, Shuxing Huan, Qi Wu, Qiang Chen, Na Liu
  • Publication number: 20250096255
    Abstract: A composite positive electrode material is Li[LixNiaCobMd]O2, where x+a+b+c+d=1, 0<a, b, and c<1, 0?d?0.05, 0?x, and the element M includes one or more of Al, B, Zr, Sr, Y, Sb, Ta, Na, K, W, Ti, Mg, Nb, Hf, Mo, and Ce. A span of the composite positive electrode material is 1.2-2.0. The composite positive electrode material includes first and second lithium-rich manganese-based positive electrode materials. The first lithium-rich manganese-based positive electrode material includes rod-like primary particles with a length of 0.1-1.5 ?m and secondary particles with Dv50 of 3-8 ?m. The second lithium-rich manganese-based positive electrode material includes spheroidal primary particles with a diameter of 0.1-400 nm and secondary particles with Dv50 of 8-20 ?m.
    Type: Application
    Filed: December 5, 2024
    Publication date: March 20, 2025
    Inventors: Shuxing HUAN, Chongheng SHEN, Bangrun WANG, Changxu WU, Na LIU
  • Publication number: 20250091899
    Abstract: The present application discloses a lithium-manganese-nickel-containing composite oxide and a preparation method therefor, a positive electrode plate, a battery, and a power consuming device. The lithium-manganese-nickel composite oxide is in a spinel crystal form, and the ratio of the peak intensity I111 of the (111) peak to the peak intensity I400 of the (400) peak in an X-ray diffraction pattern of the lithium-manganese-nickel composite oxide is 2.1?I111/I400?3.3, wherein the diffraction angle of the (111) peak is 2?=18°-19.5°, and the diffraction angle of the (400) peak is 2?=43.5°-45°. In the above manner, the technical solution of the present application can improve the stability of the positive electrode active material, thereby improving the overall performance of the battery.
    Type: Application
    Filed: November 27, 2024
    Publication date: March 20, 2025
    Inventors: Zhenguo Zhang, Sihui Wang, Wenzhong Lin, Jingpeng Fan, Zhijie Yao, Na Liu
  • Publication number: 20250091904
    Abstract: The present application relates to a positive electrode active material comprising a first positive electrode active material, which comprises a substrate of formula (I), wherein the substrate is doped with an element M1: LiA1[NiX1CoY1MnZ1]O2 (I); and a second positive electrode active material, which comprises a substrate of formula (II), wherein the substrate is doped with an element M2: LiA2[NiX2CoY2MnZ2]O2 (II); the average particle size Dv50 of the first positive electrode active material is greater than that of the second positive electrode active material, wherein 0<X2?X1?0.4, and optionally 0<X2?X1?0.1. The present application further relates to a method for preparing the positive electrode active material, a secondary battery, and a power consuming device.
    Type: Application
    Filed: November 28, 2024
    Publication date: March 20, 2025
    Inventors: Kai Wu, Qi Wu, Qiang Chen, Chongheng Shen, Jingpeng Fan, Dong Zhao, Na Liu