公开(公告)号：US20220416330A1

公开(公告)日：2022-12-29

申请号：US17892621

申请日：2022-08-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Chengdu LIANG ,  Haizu JIN ,  Qian LIU ,  Xiaofu Xu

IPC: H01M16/00 ,  H01M4/58 ,  H01M4/505 ,  H01M4/525 ,  H01M50/209 ,  H01M50/489

Abstract: The application relates to a battery module, a manufacturing method and a manufacturing device thereof, a battery pack and a power consumption apparatus. The battery module includes a first-type battery cell and a second-type battery cell having different chemical systems and being electrically connected at least in series, where under the conditions of 25° C. and 100% state of charge (SOC), specific power density P2 of the second-type battery cell is higher than specific power density P1 of the first-type battery cell. Satisfying: 0.04≤(r1/m)/(r2/n)≤14, where, r1 and r2 are resistances per unit area of a positive electrode plate of the first-type battery cell and a positive electrode plate of the second-type battery cell respectively, and m and n are numbers of laminations of the positive electrode plate of the first-type battery cell and the positive electrode plate of the second-type battery cell.

公开(公告)号：US20220393311A1

公开(公告)日：2022-12-08

申请号：US17890302

申请日：2022-08-18

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian LIU ,  Yonghuang Ye ,  Chengdu Liang ,  Haizu Jin

IPC: H01M50/51 ,  H01M50/446 ,  H01M4/525 ,  H01M4/505 ,  H01M4/58 ,  H01M50/491 ,  H01M10/0585 ,  H01M10/0525

Abstract: The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first type of battery cells and the second type of battery cells are battery cells with different chemical systems, the first type of battery cells comprises N first battery cells, the second type of battery cells comprises M second battery cells, N and M are positive integers, the first battery cell comprises a first separator and a first electrolyte, the second battery cell comprises a second separator and a second electrolyte, a kinetic characteristic factor x1 of the first battery cell is: x1=1000×(ε1×r1)/(τ1×t1×θ1), a kinetic characteristic factor x2 of the second battery cell is: x2=1000×(ε2×r2)/(τ2×t2×θ2), and x1 and x2 satisfy: 0.01≤x1/x2≤160.

公开(公告)号：US20220359874A1

公开(公告)日：2022-11-10

申请号：US17863295

申请日：2022-07-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Changfeng BIE ,  Xia HU ,  Qian LIU ,  Na LIU ,  Xiaofu XU ,  Huan NI

IPC: H01M4/58 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01M4/04

Abstract: This application provides a mixed positive electrode material, a positive electrode plate and a preparation method thereof, a battery, and an apparatus. The mixed positive electrode material includes a mixed component consisting of a material of lithium iron phosphate chemical system and a material of ternary chemical system, where the material of lithium iron phosphate chemical system is secondary particles with an average specific surface area within 10 m2/g. In the mixed positive electrode material of this application, the introduction of lithium iron phosphate secondary particles having a low specific surface area improves ease of processing of the mixed positive electrode material, making a slurry less prone to agglomeration and the two materials highly miscible. When the positive electrode plate is prepared by using the mixed positive electrode material of this application, uniform distribution of the positive electrode material on the positive electrode plate can be effectively improved.

公开(公告)号：US20220123375A1

公开(公告)日：2022-04-21

申请号：US17563080

申请日：2021-12-28

Applicant: Contemporary Amperex Technology CO., Limited

Inventor： Chengdu LIANG ,  Qian LIU ,  Quanguo LI ,  Yonghuang YE ,  Wei LI

IPC: H01M10/42 ,  H01M50/258 ,  H01M50/509 ,  H01M10/625

Abstract: The present application provides a battery module, an apparatus, a battery pack, and a method and device for manufacturing the battery module. The battery module includes: a first-type battery cell and a second-type battery cell, which are connected in series, the first-type battery cell and the second-type battery cell are battery cells of different chemical system, and the volume energy density of the first-type battery cell is less than the volume energy density of the second-type battery cell; and the capacity Cap1 of the first-type battery cell is greater than the capacity Cap2 of the second-type battery cell. While ensuring the safety performance of the battery module, the service life and the energy throughput of the battery module are effectively improved.

公开(公告)号：US20220123303A1

公开(公告)日：2022-04-21

申请号：US17565469

申请日：2021-12-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian LIU ,  Wenguang LIN ,  Yongsheng GUO ,  Chengdu LIANG

IPC: H01M4/58 ,  H01M10/054 ,  H01M4/62 ,  H01M4/04 ,  H01M4/02

Abstract: The present application relates to a positive electrode material for a sodium-ion battery and a preparation method thereof, and a sodium-ion battery, a battery module, a battery pack and an apparatus manufactured from the active material, the positive electrode material for the sodium-ion battery comprises a composite of sodium halophosphate with carbon having the following molecular formula: Na2M1hM2k(PO4)X/C, in which M1 and M2 are transition metal ions each independently selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Sr, Y, Nb, Mo, Sn, Ba and W; h is from 0 to 1, k is from 0 to 1, and h+k=1; X is halogen ion selected from F, Cl and Br, wherein the positive electrode material has a powder resistivity in the range of from 10 Ω·cm to 5,000 Ω·cm under a pressure of 12 MPa.

公开(公告)号：US20190190006A1

公开(公告)日：2019-06-20

申请号：US16152199

申请日：2018-10-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ying WANG ,  Yongsheng GUO ,  Chengdu LIANG ,  Xiqing WANG ,  Shuojian SU ,  Qian LIU

IPC: H01M4/136 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/136 ,  H01M4/5825 ,  H01M4/622 ,  H01M4/623 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/054 ,  H01M2004/021 ,  H01M2004/028

Abstract: The present disclosure provides a positive electrode plate and an electrochemical battery. The positive electrode plate comprises a positive electrode current collector and a positive electrode film. The positive electrode film is provided on the positive electrode current collector and comprises a positive electrode active material and a binder. The positive electrode active material comprises a prussian blue analogue material, the binder is an oil-soluble binder, an area density of the positive electrode film is 5 mg/cm2˜30 mg/cm2. In the positive electrode film of the present disclosure, the prussian blue analogue material is used together with the oil-soluble binder, and the area density of the positive electrode film is controlled within a certain range, so that introduction of the water molecule can be reduced during the preparation process and coating process of a positive electrode slurry, and cycle performance of the electrochemical battery can be improved.