公开(公告)号：US20230170491A1

公开(公告)日：2023-06-01

申请号：US18069067

申请日：2022-12-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Songjun SHI ,  Qian LIU ,  Jun PENG ,  Fajun HUANG

IPC: H01M4/62 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M4/628 ,  H01M4/525 ,  H01M4/625 ,  H01M4/623 ,  H01M4/505 ,  H01M2004/021

Abstract: A positive electrode sheet includes a current collector including a coating region and a non-coating region, a resistance layer disposed on the current collector and including a conductive agent, a first binder, and a first positive electrode active material, and a positive electrode active material layer including a second positive electrode active material, a conductive agent, and a second binder. A resistance of the resistance layer is greater than a resistance of the positive electrode active material layer. In a cross section of the positive electrode sheet, a projection of at least a part of the positive electrode active material layer on the current collector and a projection of the resistance layer on the current collector do not overlap. A polarization parameter P of the positive electrode sheet is in a range of 0.4-65.0 and equals ((1−S)/S)·(R1/R2).

公开(公告)号：US20230163419A1

公开(公告)日：2023-05-25

申请号：US18094415

申请日：2023-01-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianfu HE ,  Yonghuang YE ,  Qian LIU ,  Xueyang SUN ,  Tao ZHANG ,  Haizu JIN

IPC: H01M50/474

CPC classification number: H01M50/474

Abstract: A battery cell may include a housing, an electrode assembly, and a first support structure. The housing may be provided with an accommodating cavity. The electrode assembly may be accommodated in the accommodating cavity, and include a main body portion and a thinned portion. At least one end of the main body portion in a first direction may be connected to the thinned portion. The first support structure may be arranged corresponding to the thinned portion, and configured to support the thinned portion when the electrode assembly is expanded.

公开(公告)号：US20230070894A1

公开(公告)日：2023-03-09

申请号：US17985813

申请日：2022-11-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Chengdu LIANG ,  Haizu JIN ,  Qian LIU ,  Xia HU

IPC: H01M50/342 ,  H01M50/375 ,  H01M10/613 ,  H01M10/48

Abstract: This application relates to the field of energy storage technologies, and provides a battery, an apparatus, a preparation method of battery, and a preparation apparatus of battery. The battery includes a first battery cell and a second battery cell. The first battery cell includes a first pressure relief mechanism, the second battery cell includes a second pressure relief mechanism, an energy density of the first battery cell is greater than an energy density of the second battery cell, and an area of the first pressure relief mechanism is greater than an area of the second pressure relief mechanism. The apparatus includes the foregoing battery.

公开(公告)号：US20230066562A1

公开(公告)日：2023-03-02

申请号：US18054698

申请日：2022-11-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu LIANG ,  Xiaofu XU ,  Yonghuang YE ,  Haizu JIN ,  Wenwei CHEN ,  Qian LIU

IPC: H01M50/578 ,  H01M50/209 ,  H01M50/581

Abstract: A battery includes a protective box provided with a guiding channel and a plurality of battery cells in the protective box. The plurality of battery cells include a first battery cell and a second battery cell adjacent to each other. The first battery cell includes a pressure relief end provided with a pressure relief mechanism. The pressure relief mechanism is configured to actuate release of internal pressure of the first battery cell in response to the internal pressure or an internal temperature of the first battery cell reaching a threshold. The guiding channel is configured to guide emissions released from the pressure relief mechanism. The pressure relief end of the first battery cell is staggered with one end of the second battery cell that is close to the pressure relief end, in a direction leaving the guiding channel.

公开(公告)号：US20220115686A1

公开(公告)日：2022-04-14

申请号：US17556991

申请日：2021-12-20

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M10/04 ,  H01M10/0525

Abstract: The present application provides a battery and an apparatus. The battery includes: a first-type battery cell group and a second-type battery cell group which are connected in series, wherein the first-type battery cell group is composed of multiple first-type batteries connected in parallel, and the second type battery cell group is composed of at least one second type battery cell connected in parallel; the first-type battery cell and the second-type battery cell are battery cells of different chemical systems, and the volume energy density of the first-type battery cell is less than that of the second-type battery cell; and the capacity Cap1 of the first-type battery cell group is greater than the capacity Cap2 of the second-type battery cell group, in which Cap1 is the sum of the capacities of the corresponding first-type battery cells, and Cap2 is the sum of the capacities of the corresponding second-type battery cells.

公开(公告)号：US20210336258A1

公开(公告)日：2021-10-28

申请号：US17371231

申请日：2021-07-09

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian LIU ,  Yongsheng Guo ,  Chengdu Liang ,  Wenguang Lin

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/04 ,  H01M10/054

Abstract: The present application discloses a positive electrode active material and its preparation method, a sodium ion battery and an apparatus containing the sodium ion battery. The positive electrode active material satisfies a chemical formula Na2+xCuhMnkMlO7−y, wherein M is one or more selected from Li, B, Mg, Al, K, Ca, Ti, V, Cr, Fe, Co, Ni, Zn, Ga, Sr, Y, Nb, Mo, Sn, Ba and W, 0≤x≤0.5, 0.1

公开(公告)号：US20230402580A1

公开(公告)日：2023-12-14

申请号：US18449555

申请日：2023-08-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chenhui LIN ,  Jianfu HE ,  Qian LIU ,  Yonghuang YE ,  Haizu JIN

IPC: H01M4/13 ,  H01M10/0587 ,  H01M10/0525

CPC classification number: H01M4/13 ,  H01M10/0587 ,  H01M10/0525 ,  H01M2220/20

Abstract: An electrode assembly includes a current collector. The current collector includes a first coating region and a second coating region. The first coating region is coated with an active substance material and the second coating region is coated with a lithiation material. In an extension direction of the current collector, a gap is disposed between the first coating region and the second coating region.

公开(公告)号：US20230378546A1

公开(公告)日：2023-11-23

申请号：US18366342

申请日：2023-08-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Yonghuang YE ,  Qian LIU ,  Jianfu HE ,  Fajun HUANG ,  Chenhui LIN

IPC: H01M10/0585 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M4/583

CPC classification number: H01M10/0585 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/625 ,  H01M4/623 ,  H01M4/583 ,  H01M2004/028

Abstract: A secondary battery includes a positive electrode plate. that includes a positive current collector, a first positive active material layer distributed on one side of the positive current collector, and a second positive active material layer distributed on an other side of the positive current collector and a negative electrode plate that includes a negative current collector, a first negative active material layer distributed on one side of the negative current collector and opposite to the second positive active material layer, and a second negative active material layer distributed on an other side of the negative current collector. A resistance of the first positive active material layer is R1, a resistance of the second positive active material layer is R2, a resistance of the first negative active material layer is R3, a resistance of the second negative active material layer is R4.

公开(公告)号：US20230231249A1

公开(公告)日：2023-07-20

申请号：US17970603

申请日：2022-10-21

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M50/204 ,  H01M4/583 ,  H01M4/525 ,  H01M4/58 ,  H01M10/04

CPC classification number: H01M50/204 ,  H01M4/583 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0404 ,  H01M2004/027

Abstract: The present application discloses a battery module, a battery pack, an apparatus, and a method and device for manufacturing a battery module. The battery module includes n first-type battery cells and m second-type battery cells, n≥1, m≥1, and the n first-type battery cells and them second-type battery cells are arranged and satisfy: VED1>VED2, ΔF1>ΔF2, and (ΔF1×n+ΔF2×m)/(n+m)≤0.8×ΔF1, where VED1, VED2, ΔF1 and ΔF2 are respectively defined in the description.

公开(公告)号：US20230086688A1

公开(公告)日：2023-03-23

申请号：US17818407

申请日：2022-08-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quanguo LI ,  Qian LIU ,  Yonghuang YE ,  Fajun HUANG ,  Haizu JIN

IPC: H01M50/209 ,  H01M50/267

Abstract: The present application provides a battery pack and a power consuming device powered by the battery pack. The battery pack includes a battery pack cavity and a plurality of battery cells received in the battery pack cavity. An interior space of the battery pack cavity can be divided into a first region with a temperature change rate of K1 and a second region with a temperature change rate of K2, where 0.066≤K1≤0.131 and 0.034≤K2≤0.066, K1 and K2 being expressed in ° C./min. The plurality of battery cells include at least one first battery cell arranged in the first region, and at least one second battery cell arranged in the second region. The battery pack of the present application can reduce or avoid the cask effect at low temperature and improve the energy retention rate at low temperature.