公开(公告)号：US20240258586A1

公开(公告)日：2024-08-01

申请号：US18631360

申请日：2024-04-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO, LIMITED.

Inventor： Wenwei CHEN ,  Jiang LIU ,  Ying HUANG ,  Quankun LI

IPC: H01M10/42 ,  H01M10/052 ,  H01M10/058 ,  H01M50/15 ,  H01M50/249

CPC classification number: H01M10/4242 ,  H01M10/052 ,  H01M10/058 ,  H01M50/15 ,  H01M50/249 ,  H01M2220/20

Abstract: Embodiments of the present application provide a battery cell, a battery, and a power consumption apparatus, which could effectively improve performance of the battery without increasing the internal space of the battery. The battery cell includes: at least two electrode assemblies, a surface of each electrode assembly of the at least two electrode assemblies including a curved part, and curved parts of two adjacent electrode assemblies of the at least two electrode assemblies forming an accommodating space; and a lithium replenishing apparatus, at least part of the lithium replenishing apparatus being disposed in the accommodating space.

公开(公告)号：US20240047657A1

公开(公告)日：2024-02-08

申请号：US18487266

申请日：2023-10-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang ZHOU ,  Baiqing LI ,  Jiang LIU ,  Yao JIANG ,  Xiaomei LIU

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/028

Abstract: A novel positive electrode sheet, a secondary battery, a battery module, a battery pack and an electrical apparatus are described. The positive electrode sheet includes a positive electrode current collector and a positive electrode film layer with a single-layer structure or a multi-layer structure. When the positive electrode film layer is a single-layer structure, at least one of the positive electrode film layers comprises a first positive electrode active material and a second positive electrode active material; and/or, when the positive electrode film layer is a multi-layer structure, at least one layer of at least one of the positive electrode film layers comprises a first positive electrode active material and a second positive electrode active materials. The first positive electrode active material includes an inner core, a first cladding layer comprising crystalline pyrophosphates, a second cladding layer comprising crystalline phosphate, and a third cladding layer.

公开(公告)号：US20200091558A1

公开(公告)日：2020-03-19

申请号：US16562114

申请日：2019-09-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang ZHOU ,  Xiaomei LIU ,  Shipeng LI ,  Jiang LIU ,  Guobao WANG

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/587 ,  H01M4/136 ,  H01M4/58

Abstract: The present disclosure provides a lithium-ion battery comprising an electrode assembly, an electrolyte and a case. The electrolyte comprises a lithium salt and an organic solvent which comprises a cyclic ester, a mass of the cyclic ester is equal to or less than 10% of a total mass of the organic solvent. A negative electrode active material at least comprises a carbon-based negative electrode material which in the negative electrode film exists in a form of a pre-lithium-intercalation compound LiCx formed by lithiation with a lithium metal, 12≤x≤150; a capacity of the negative electrode active material per unit area/(a capacity of the positive electrode active material per unit area+a capacity of active lithium ions of the pre-lithium-intercalation compound LiCx which can be intercalated and deintercalated in the negative electrode film per unit area)≥1.10.

公开(公告)号：US20240213542A1

公开(公告)日：2024-06-27

申请号：US18596058

申请日：2024-03-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Nan ZHANG ,  Hong WANG ,  Jiang LIU ,  Wenwei CHEN

IPC: H01M10/0583 ,  H01M50/533 ,  H01M50/536 ,  H01M50/588

CPC classification number: H01M10/0583 ,  H01M50/533 ,  H01M50/536 ,  H01M50/588 ,  H01M2220/20

Abstract: An electrode assembly includes a first electrode plate, and separators provided on two sides of the first electrode plate in a thickness direction of the first electrode plate and stacked with the first electrode plate. In an unfolded state of the electrode assembly, a separator has a first edge portion exceeding an end of the first electrode plate in a length direction of the separator, and a second edge portion exceeding an end of the first electrode plate in a height direction of the separator. In the thickness direction of the first electrode plate, the corresponding first edge portions on two sides of the first electrode plate are at least partly hot-melt connected to form a first hot-melted segment, and the corresponding second edge portions on two sides of the first electrode plate are at least partly hot-melt connected to form a second hot-melted segment.

公开(公告)号：US20230378462A1

公开(公告)日：2023-11-23

申请号：US18363989

申请日：2023-08-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang ZHOU ,  Yao JIANG ,  Jiang LIU ,  Baiqing LI

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

CPC classification number: H01M4/5825 ,  H01M4/366 ,  H01M4/525 ,  H01M2004/028

Abstract: A positive electrode sheet, a secondary battery, a battery module, a battery pack and an electrical apparatus are described. The positive electrode sheet includes a positive electrode current collector and a positive electrode film layer arranged on at least one surface of the positive electrode current collector and having a single-layer or multi-layer structure. When the positive electrode film layer is of the single-layer structure, at least one positive electrode film layer comprises both a first positive electrode active material and a second positive electrode active material with a chemical formula of LiaAxMn1-yRyP1-zCzO4-nDn; and/or, when the positive electrode film layer is of the multi-layer structure, at least one layer of the at least one positive electrode film layer includes both a first and second positive electrode active material. The secondary battery made of the positive electrode sheet has high energy density and high battery cell rate performance.

公开(公告)号：US20230352663A1

公开(公告)日：2023-11-02

申请号：US18211591

申请日：2023-06-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiang ZHOU ,  Jiang LIU ,  Baiqing LI ,  Yao JIANG ,  Xiaomei LIU

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/58 ,  H01M4/583 ,  H01M4/525

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/5825 ,  H01M4/583 ,  H01M4/525 ,  H01M2004/028

Abstract: A positive electrode sheet may comprise a positive electrode current collector and a positive electrode film layer having a single-layer structure or a multi-layer structure provided on at least one surface thereof; when the positive electrode film layer is of a single-layer structure, at least one positive electrode film layer may comprise both a first positive electrode active material and a second positive electrode active material; and/or, when the positive electrode film layer is of a multi-layer structure, at least one layer of the at least one positive electrode film layer may comprise both a first positive electrode active material and a second positive electrode active material; the first positive electrode active material may comprises an inner core containing Li1+xMn1-yAyP1-zRzO4, a first coating layer containing pyrophosphate MP2O7 and phosphate XPO4 and covering the inner core, and a second coating layer containing carbon element and covering the first coating layer.

公开(公告)号：US20210050617A1

公开(公告)日：2021-02-18

申请号：US16976633

申请日：2018-10-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Guobao WANG ,  Jiang LIU ,  Xiaomei LIU ,  Bin XIE

IPC: H01M10/0525 ,  H01M4/583 ,  H01M4/04 ,  H01M10/42 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/054

Abstract: A lithium-ion secondary battery and a manufacturing method thereof. A negative electrode plate of the lithium-ion secondary battery is a prelithiated negative electrode plate, a negative electrode active substance is a carbon-based negative electrode material, and the carbon-based negative electrode material and a pre-intercalated lithium metal in the negative electrode plate are lithiated to form a prelithiated compound LiCx, where x=12˜150. A capacity of a unit area of the negative electrode active substance/a capacity of a unit area of a positive electrode active substance=1.2˜2.1. The capacity of a unit area of the negative electrode active substance/(the capacity of a unit area of the positive electrode active substance+an amount of active lithium deintercalatable from the pre-lithiated compound LiCx in a unit area of a negative electrode film)≥1.10.

公开(公告)号：US20230207945A1

公开(公告)日：2023-06-29

申请号：US17972418

申请日：2022-10-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yu TANG ,  Hong WANG ,  Peng WANG ,  Jiang LIU ,  Junrong LI

IPC: H01M50/258 ,  H01M50/46 ,  H01M50/204 ,  H01M50/547 ,  H01M10/04

CPC classification number: H01M50/258 ,  H01M50/46 ,  H01M50/204 ,  H01M50/547 ,  H01M10/0431

Abstract: The present application provides a battery, a manufacturing method and apparatus thereof, and an electric device. The battery includes: a box; a battery unit provided in the box and including multiple battery cells stacked in a first direction, each including two first walls provided oppositely in the first direction and two second walls provided in a second direction orthogonal to the first direction, and an electrode terminal being provided on the second wall; and an end plate provided between a box inner wall of the box and the battery unit and including a first surface facing the box inner wall and a second surface facing the first wall, the first surface including a first region corresponding to a central region of the first wall and a second region corresponding to an edge region of the first wall, and a part of the second surface being a flat surface.

公开(公告)号：US20220407118A1

公开(公告)日：2022-12-22

申请号：US17893503

申请日：2022-08-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hong WANG ,  Jiang LIU ,  Xiaomei LIU

IPC: H01M10/0583

Abstract: An electrode assembly includes first and second electrode plate having opposite polarities, and a separator separating the first and second electrode plates. The first electrode plate includes two first stack sections and a bend section connecting the first stack sections and including a guide portion configured to guide the bend section to bend during production. The second electrode plate includes a second stack section disposed between the first stack sections. The separator includes two separation sections each disposed between the second stack section and one first stack section. Thickness Da of each first stack section, thickness Dc of the second stack section, and thickness Ds of each separation section in a stacking direction of the first stack sections, and a dimension w of the guide portion in a bending direction of the bend section satisfy: Dc+2Ds≤w≤2×(Dc+2Ds+Da).

公开(公告)号：US20240274894A1

公开(公告)日：2024-08-15

申请号：US18643600

申请日：2024-04-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenwei CHEN ,  Jiang LIU ,  Ying HUANG ,  Quankun LI

IPC: H01M10/42 ,  H01M10/058 ,  H01M50/103 ,  H01M50/55

CPC classification number: H01M10/4242 ,  H01M10/058 ,  H01M50/103 ,  H01M50/55

Abstract: Embodiments of the present application provide a battery cell, a battery and an electrical apparatus, which can effectively improve the performance of batteries with low process complexity. The battery cell includes: at least two electrode assemblies; a lithium-supplementing apparatus arranged between two adjacent electrode assemblies in the at least two electrode assemblies; a shell configured to accommodate the at least two electrode assemblies, the shell including a first wall, and the first wall being provided with a lithium-supplementing electrode terminal; and a connecting element configured to electrically connect the lithium-supplementing apparatus with the lithium-supplementing electrode terminal.