公开(公告)号：US20240274836A1

公开(公告)日：2024-08-15

申请号：US18626100

申请日：2024-04-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Mingling LI ,  Xin LIU ,  Qisen HUANG ,  Xianghui LIU ,  Cheng LI

IPC: H01M4/66 ,  H01M4/70

CPC classification number: H01M4/667 ,  H01M4/661 ,  H01M4/668 ,  H01M4/70

Abstract: A composite current collector includes a first metal layer, a second metal layer, and a first binding layer. The first metal layer includes a first body zone and a first tab zone. The first tab zone is located at an end of the first metal layer. The second metal layer includes a second body zone and a second tab zone. The second tab zone is located at an end of the second metal layer. The first body zone and the second body zone are connected through the first binding layer. The first tab zone has a thickness greater than thickness of the first body zone. The first tab zone extends toward the second tab zone.

公开(公告)号：US20240190715A1

公开(公告)日：2024-06-13

申请号：US18409940

申请日：2024-01-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xin LIU ,  Qisen HUANG ,  Cheng LI ,  Mingling LI ,  Xianghui LIU

IPC: C01D15/02 ,  H01M4/02 ,  H01M4/525 ,  H01M4/62

CPC classification number: C01D15/02 ,  H01M4/525 ,  H01M4/625 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/028

Abstract: A positive lithium supplement material includes a core, an inorganic coating layer coated on at least part of a surface of the core, and an organic coating layer coated on at least part of a surface of the inorganic coating layer away from the core. The core includes LixMyOz, and the M element includes at least one of Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, or Zn, where 2≤x≤6, 1≤y≤2, 2≤z≤4, and the core is electrically neutral.

公开(公告)号：US20230207782A1

公开(公告)日：2023-06-29

申请号：US18109812

申请日：2023-02-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yingjie GUAN ,  Yongchao LIU ,  Qisen HUANG ,  Na LIU ,  Chengdu LIANG

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M4/04 ,  H01M4/62

CPC classification number: H01M4/364 ,  H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M4/0471 ,  H01M4/621 ,  H01M2004/021

Abstract: This application relates to an electrode active composition, a preparation method thereof, an electrode, a battery, and an apparatus. The electrode active composition includes: a first component, the first component being lithium cobalt oxide particles; and a second component, the second component being ternary material particles. The first component includes lithium cobalt oxide particles with a particle size greater than 11 μm and lithium cobalt oxide particles with a particle size less than 6 μm, and a ratio in number of the lithium cobalt oxide particles with a particle size greater than 11 μm to the lithium cobalt oxide particles with a particle size less than 6 μm is 0.2-4.8, and in some embodiments, 0.2-2.8. A summed number of the lithium cobalt oxide particles with a particle size greater than 11 μm and the lithium cobalt oxide particles with a particle size less than 6 μm accounts for above 90% of a total number of particles in the first component.

公开(公告)号：US20220231279A1

公开(公告)日：2022-07-21

申请号：US17586754

申请日：2022-01-27

Applicant: Contemporary Amperex Technology Co.,Limited

Inventor： Chengdu LIANG ,  Yuzhen ZHAO ,  Yingjie GUAN ,  Yan Wen ,  Qisen HUANG

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/134

Abstract: The present application discloses a negative active material, a method for preparing the same, and related secondary batteries, battery modules, battery packs and apparatus. The negative active material includes a core material and a polymer-modified coating layer on at least a part of its surface; the core material includes one or more of silicon-based materials and tin-based materials; the coating layer includes sulfur element and carbon element; in the Raman spectrum of the negative active material, the negative active material has scattering peaks at the Raman shifts of 900 cm−1˜960 cm−1, 1300 cm−1˜1380 cm−1 and 1520 cm−1˜1590 cm−1, respectively, in which the scattering peak at the Raman shift of 900 cm−1˜960 cm−1 has a peak intensity recorded as Il, the scattering peak at the Raman shift of 1520 cm−1˜1590 cm−1 has a peak intensity recorded as IG, and Il and IG satisfy 0.2≤Il/IG≤0.8.

公开(公告)号：US20220144648A1

公开(公告)日：2022-05-12

申请号：US17584304

申请日：2022-01-25

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Yingjie GUAN ,  Yuzhen ZHAO ,  Yan WEN ,  Qisen HUANG

IPC: C01B33/113 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/36

Abstract: The present application discloses a silicon-oxygen compound, a method for preparation thereof, and a secondary battery, a battery module, a battery pack and an apparatus related thereto. The silicon-oxygen compound includes both manganese element and a copper element, a content of the manganese element is from 20 ppm to 500 ppm, and a mass ratio of the manganese element to the copper element is from 1 to 18.

公开(公告)号：US20220123322A1

公开(公告)日：2022-04-21

申请号：US17645499

申请日：2021-12-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu LIANG ,  Qisen HUANG ,  Shiwen WANG

IPC: H01M4/66

Abstract: Positive current collector, positive plate, electrochemical device and apparatus are disclosed. The positive current collector includes a support layer and a metal conductive layer disposed on the support layer, where a ratio of a density of the metal conductive layer to an intrinsic density of a material of the metal conductive layer is greater than or equal to 0.89, and the material of the metal conductive layer is selected from one or more of aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy. The positive current collector can provide simultaneously both low weight and high electrical performance, thus enabling the electrochemical device to achieve both high weight energy density and electrochemical performance at the same time.

公开(公告)号：US20210280857A1

公开(公告)日：2021-09-09

申请号：US17330400

申请日：2021-05-25

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Yuzhen ZHAO ,  Yan WEN ,  Qisen HUANG

IPC: H01M4/36 ,  C01B32/21 ,  H01M10/0525 ,  H01M4/587 ,  H01M4/60 ,  H01M4/62

Abstract: The present application discloses a composite graphite material, a secondary battery, an apparatus and a preparation method thereof. The composite graphite material includes a core material and a coating layer coating at least a part of the surface of the core material, the core material including graphite; wherein the absolute value K of zeta potential of the composite graphite material in deionized water with a pH of 7 is at least 20 mV. The use of the composite graphite material provided by the present application can improve the cohesion and bonding force of the negative electrode plate, thereby reducing the cyclic expansion of the secondary battery.

公开(公告)号：US20210151770A1

公开(公告)日：2021-05-20

申请号：US17128090

申请日：2020-12-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xin LIU ,  Qisen HUANG ,  Shiwen WANG ,  Xianghui LIU ,  Jia PENG ,  Mingling LI ,  Changliang SHENG

IPC: H01M4/66 ,  H01M10/0525 ,  H01M4/04

Abstract: The present disclosure provides a lithium ion secondary battery, a battery core, a negative electrode plate and an apparatus containing the lithium ion secondary battery. The lithium ion secondary battery includes a battery core and an electrolytic solution, the battery core including a positive electrode plate comprising a positive current collector and a positive active material layer, a separator, and a negative electrode plate comprising a negative current collector and a negative active material layer, wherein the positive current collector and/or the negative current collector are a composite current collector, the composite current collector comprises a polymer-based support layer and a conductive layer disposed on at least one surface of the support layer, and the composite current collector has a thermal conductivity in a range of 0.01 W/(m·K) to 10 W/(m·K), preferably in a range of 0.1 W/(m·K) to 2 W/(m·K).

公开(公告)号：US20200006775A1

公开(公告)日：2020-01-02

申请号：US16452542

申请日：2019-06-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Cheng LI ,  Changliang SHENG ,  Huafeng HUANG ,  Qisen HUANG

IPC: H01M4/62 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/04 ,  H01M4/587 ,  C23C14/00 ,  C23C14/08 ,  C23C14/30

Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer and consists of an inorganic dielectric material. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.

公开(公告)号：US20190305321A1

公开(公告)日：2019-10-03

申请号：US16366505

申请日：2019-03-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Huafeng HUANG ,  Qisen HUANG ,  Xin LIU

IPC: H01M4/66 ,  H01M4/80

Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector includes an insulation layer; and a conductive layer at least located on at least one surface of the insulation layer. The conductive layer has a room temperature thin film resistor of RS, where 0.01Ω/□≤RS≤0.15Ω/□. The current collector is provided with a plurality of holes penetrating through the insulation layer and the conductive layer.