公开(公告)号：US12034155B1

公开(公告)日：2024-07-09

申请号：US18426295

申请日：2024-01-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dejun Xiao ,  Jiahua Chen ,  Qian Liu ,  Quanguo Li ,  Jingxuan Sun

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/28 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/623 ,  H01M4/625 ,  H01M10/286 ,  H01M2004/021 ,  H01M2220/20

Abstract: The present application relates to a secondary battery, which includes: a cathode sheet, an anode sheet, and an electrolyte; the cathode sheet includes a cathode film layer containing a cathode active material, and the anode sheet includes an anode film layer containing an anode active material; and the secondary battery meets a following function relationship: 0.22≤3×(A1/A2)×(B2−B1)/(B1+B2)≤1.55, the parameters are referred to the description; and an electrical device including the secondary battery. The secondary battery in the present application has both good cycle life and excellent fast charging capacity.

公开(公告)号：US20240204255A1

公开(公告)日：2024-06-20

申请号：US18407482

申请日：2024-01-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jingxuan Sun ,  Qian Liu ,  Quanguo Li ,  Zeli Wu ,  Yiming Qin ,  Jiahua Chen ,  Dejun Xiao

IPC: H01M10/0568 ,  C07F5/04 ,  C07F7/04

CPC classification number: H01M10/0568 ,  C07F5/04 ,  C07F7/04 ,  H01M2300/0037

Abstract: The present application relates to an ionic compound, an electrolyte solution, a secondary battery and an electrical apparatus, wherein the ionic compound is represented by formula (1); wherein each R1 is independently selected from alkyl having 1-10 carbon atoms substituted with fluorine or aryl having 6-30 carbon atoms substituted with fluorine, respectively; wherein any two adjacent —OR1 groups and A− can form a ring through the carbon atom in each R1 as a site of attachment; A− represents B− or Si−, and Y+ represents a sodium ion or a potassium ion. The ionic compound can improve the cycling performance of secondary batteries such as sodium-ion batteries and potassium-ion batteries.

公开(公告)号：US20250070321A1

公开(公告)日：2025-02-27

申请号：US18945562

申请日：2024-11-13

Applicant: JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED ,  CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo Li ,  Qian Liu ,  Yonghuang Ye ,  Chunpeng Yu ,  Jingxuan Sun ,  Dejun Xiao ,  Jiahua Chen

IPC: H01M10/658 ,  H01M10/054 ,  H01M50/213 ,  H01M50/244 ,  H01M50/342 ,  H01M50/503 ,  H01M50/509

Abstract: The present application relates to the technical field of batteries, and discloses a battery and a power consuming device. The battery includes: a plurality of first battery cells and a plurality of second battery cells, at least one of the second battery cells being provided between any two of the first battery cells, and any one of the second battery cells being adjacent to at least one of the second battery cells; wherein the thermal stability of the second battery cell is higher than the thermal stability of the first battery cell. With the technical solution of the present application, the risk of the spread of thermal runaway of the battery can be reduced, and thus the safety of the battery can be enhanced.

公开(公告)号：US20250006927A1

公开(公告)日：2025-01-02

申请号：US18882759

申请日：2024-09-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo Li ,  Qian Liu ,  Yonghuang Ye ,  Chunpeng Yu ,  Jingxuan Sun ,  Jiahua Chen ,  Dejun Xiao

IPC: H01M4/583 ,  H01M4/02 ,  H01M10/054

Abstract: The present application provides a sodium-ion battery, a battery module, a battery pack, and an electrical device. The sodium-ion battery includes a positive electrode plate, a negative electrode plate, and a separator; the positive electrode plate includes a positive electrode current collector and a positive electrode active material layer arranged on at least one surface of the positive electrode current collector, the negative electrode plate includes a negative electrode current collector and a negative electrode active material layer arranged on at least one surface of the negative electrode current collector, and the separator is arranged between the positive electrode plate and the negative electrode plate; the positive electrode active material layer has a porosity denoted as α, the negative electrode active material layer has a porosity denoted as β, and the separator has a porosity denoted as γ, which satisfy 0≤(β−α)/γ≤1.5, and α≤γ.

公开(公告)号：US20240322589A1

公开(公告)日：2024-09-26

申请号：US18672378

申请日：2024-05-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofu Xu ,  Yibo Shang ,  Jianfu Pan ,  Jingxuan Sun ,  Qian Liu ,  Yonghuang Ye

IPC: H02J7/00 ,  H01M4/02 ,  H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/48

CPC classification number: H02J7/007182 ,  H01M4/364 ,  H01M4/582 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/48 ,  H02J7/0048 ,  H01M2004/028

Abstract: Embodiments of the present application provide a charging control method and a charging control apparatus of a lithium-ion battery. The charging control method includes: performing charging control on the lithium-ion battery for the ith time, so that a battery capacity value of the lithium-ion battery at a target charging cut-off voltage is 0.95C0 to 1.05C0, where C0 is a nominal capacity of the lithium-ion battery, and the target charging cut-off voltage is less than or equal to the nominal voltage of the lithium-ion battery. The charging control method and the charging control apparatus according to the embodiments of the present application are beneficial to keeping the quantity of active lithium unchanged, thereby achieving the effect of automatically supplementing the battery capacity along with aging.

公开(公告)号：US20240213453A1

公开(公告)日：2024-06-27

申请号：US18426295

申请日：2024-01-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dejun Xiao ,  Jiahua Chen ,  Qian Liu ,  Quanguo Li ,  Jingxuan Sun

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/62 ,  H01M10/28

CPC classification number: H01M4/366 ,  H01M4/623 ,  H01M4/625 ,  H01M10/286 ,  H01M2004/021 ,  H01M2220/20

Abstract: The present application relates to a secondary battery, which includes: a cathode sheet, an anode sheet, and an electrolyte; the cathode sheet includes a cathode film layer containing a cathode active material, and the anode sheet includes an anode film layer containing an anode active material; and the secondary battery meets a following function relationship: 0.22≤3×(A1/A2)×(B2−B1)/(B1+B2)≤1.55, the parameters are referred to the description; and an electrical device including the secondary battery. The secondary battery in the present application has both good cycle life and excellent fast charging capacity.

公开(公告)号：US20240204165A1

公开(公告)日：2024-06-20

申请号：US18416905

申请日：2024-01-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo Li ,  Qian Liu ,  Yonghuang Ye ,  Jiahua Chen ,  Jingxuan Sun ,  Dejun Xiao

IPC: H01M4/133 ,  H01M4/02 ,  H01M4/587 ,  H01M10/054 ,  H01M10/0567 ,  H01M10/0569

CPC classification number: H01M4/133 ,  H01M4/587 ,  H01M10/054 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2300/0037

Abstract: The present application relates to a negative electrode plate, a sodium ion battery, a power consuming device and the use, wherein the negative electrode plate comprises a negative electrode active material. The negative electrode active material comprises a hard carbon, wherein 0.6 μg/m≤(Dv99+Dv50)/(2×B)≤5 μg/m, wherein Dv99 and Dv50 represent a particle size corresponding to a cumulative volume distribution percentage of the negative electrode active material reaching 99% and 50%, respectively; and B represents the specific surface area of the negative electrode plate.

公开(公告)号：US20240170726A1

公开(公告)日：2024-05-23

申请号：US18426355

申请日：2024-01-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli Wu ,  Huiling Chen ,  Changlong Han ,  Bin Jiang ,  Qian Liu ,  Jianfu He ,  Jingxuan Sun ,  Lei Huang

IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/028

Abstract: This application provides a non-aqueous electrolyte and a preparation method thereof, and a secondary battery and an electric apparatus containing the same. The non-aqueous electrolyte contains the non-aqueous solvent and lithium ions, first cations, and first anions dissolved therein, where the first cation is a metal cation Men+ other than the lithium ion, n representing a chemical valence of the metal cation; the first anion is a tetrafluoroborate anion BF4−; mass concentration of the first cations in the non-aqueous electrolyte is D1 ppm, and mass concentration of the first anions in the non-aqueous electrolyte is D2 ppm, both based on total mass of the non-aqueous electrolyte; and the non-aqueous electrolyte satisfies that D1 is 0.1 to 1250 and that D1/D2 is 0.02 to 2. The non-aqueous electrolyte in this application enables the secondary battery to have good cycling performance, safety performance, and kinetic performance.

公开(公告)号：US11855297B2

公开(公告)日：2023-12-26

申请号：US18357389

申请日：2023-07-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianfu He ,  Yonghuang Ye ,  Qian Liu ,  Jingxuan Sun ,  Xiaofu Xu ,  Xueyang Sun ,  Haizu Jin

IPC: H01M50/242

CPC classification number: H01M50/242 ,  H01M2220/20

Abstract: This application discloses a battery unit. The battery unit includes a housing, at least one cell, and a buffer. The at least one cell is accommodated in the housing, the buffer is disposed corresponding to a side wall of the cell, and the buffer is provided with an accommodating cavity. A periphery of the accommodating cavity includes at least one packaging structure, the packaging structure includes at least one level of packaging region with a predetermined length. When pressure in the accommodating cavity exceeds packaging strength of the packaging structure, the packaging region is opened to form a buffer space that communicates with the accommodating cavity, reducing influence caused by swelling of the cell.

公开(公告)号：US20230261175A1

公开(公告)日：2023-08-17

申请号：US18180831

申请日：2023-03-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaofu Xu ,  Jianfu Pan ,  Xinyu Zhang ,  Yonghuang Ye ,  Jingxuan Sun ,  Qian Liu

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/525

CPC classification number: H01M4/364 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode active material comprising an A material and a B material, wherein the A material is at least one selected from the following single crystal materials or single crystal-like materials: LixMy(PO4)z, wherein M is selected from one or more of Ni, Co, Mn, Fe, Mg, Al, V, Zn, Zr, and F, v is the valence of M, 1≤x≤3, 1≤z≤3, and x+vy-3z=0; the A material has a Dv50 of 0.8 µm to 4.2 µm; the B material is selected from at least one of the following materials: (i) LiAO2, wherein A is Ni, Co or Mn; or (ii) LiNiaCobE1-a-bO2, wherein E is selected from at least one of Mn and Al, 0.50≤a≤0.98, and 0.001≤b≤0.3; wherein based on the total weight of the positive electrode active material, the A material is present in a mixing ratio m of 50 wt% to 97 wt%.