公开(公告)号：US20200212439A1

公开(公告)日：2020-07-02

申请号：US16723578

申请日：2019-12-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Chengdu Liang ,  Yuzhen Zhao ,  Qisen Huang ,  Yingjie Guan ,  Yan Wen

IPC: H01M4/38 ,  H01M4/134

Abstract: The present disclosure provides a negative electrode active material, a battery and a device. The negative electrode active material comprises a first silicon oxide and a second silicon oxide, wherein, a ratio of a particle diameter Dn10 of the first silicon oxide to a particle diameter Dn10 of the second silicon oxide is 8˜25, the particle diameter Dn10 of the first silicon oxide is 1.0 μm˜5.0 μm, the particle diameter Dn10 of the second silicon oxide is 0.05 μm˜0.50 μm. By selecting two kinds of silicon oxides with specific ranges of Dn10 to match with each other, the present disclosure controls the thickness rebound of negative electrode plate, ensures good electrical contact between the negative electrode active material particles, in turn is beneficial to improve the cycle stability and the cycle-life of the battery.

公开(公告)号：US20190326641A1

公开(公告)日：2019-10-24

申请号：US16357549

申请日：2019-03-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Shushi Dou ,  Chunhua Hu ,  Tiancheng Yi ,  Zijun Xu ,  Chengdu Liang

IPC: H01M10/0568 ,  H01M10/0569 ,  H01M10/0567 ,  H01M10/0525

Abstract: This application provides an electrolyte and a battery. The electrolyte comprises an electrolytic salt and an organic solvent comprising a cyclic carbonate and a chain carbonate. The electrolyte further comprises an additive A and an additive B, wherein the additive A is a positive-electrode film-forming additive, the additive B is a negative-electrode film-forming additive, and the reduction potential of the additive B is higher than that of the cyclic carbonate, and the electrolyte has a conductivity of 6 mS/cm to 10 mS/cm at 25° C. The electrolyte of the present application can improve the cycle performance and storage performance of the battery, in particular, improve the cycle performance and storage performance of the battery under high temperature and high voltage conditions, and at the same time balance the low-temperature performance of the battery.

公开(公告)号：US20190131625A1

公开(公告)日：2019-05-02

申请号：US16152205

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: H01M4/58 ,  H01M10/054 ,  H01M4/62 ,  H01M4/04 ,  H01M4/1397 ,  H01M4/136

CPC classification number: H01M4/5825 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/58 ,  H01M4/622 ,  H01M4/625 ,  H01M10/054 ,  H01M2004/021 ,  H01M2004/028

Abstract: The present disclosure provides a positive electrode plate, a preparation method thereof and a sodium-ion battery. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material film. The positive electrode active material film provided on the positive electrode current collector and comprises a positive electrode active material. The positive electrode active material comprises a prussian blue analogue material, a molecular formula of the prussian blue analogue material is AxM[M′(CN)6]y, a water content of the positive electrode active material film is 100 μg/g˜5000 μg/g. The water content of the positive electrode active material film is controlled within a certain range, which can not only ensure the sodium-ion battery do not seriously swell during charge-discharge process, but also can ensure sodium-ion battery have excellent charge-discharge performance and cycle performance.

公开(公告)号：US12187614B2

公开(公告)日：2025-01-07

申请号：US17475365

申请日：2021-09-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Yuzhen Zhao ,  Yan Wen ,  Qisen Huang

IPC: C01B32/205 ,  C01B32/20 ,  C01B32/21 ,  H01M4/133 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525

Abstract: The present application discloses a composite graphite material and a method for preparing the same, a secondary battery, and an apparatus. The composite graphite material includes a core material and a coating layer that coats at least a portion of the surface of the core material, the core material including graphite, and the coating layer including a coating material containing a cyclic structure moiety, wherein the composite graphite material has a weight-loss rate of from 0.1% to 0.55% when the composite graphite material is heated in an atmosphere of an inert non-oxidative gas at a temperature rising from 40° C. to 800° C. The composite graphite material can enhance the gram capability and reduce the expansion rate of an electrode plate, and more preferably, can improve the cycle performance and kinetic performance of a battery as well.

公开(公告)号：US12095082B2

公开(公告)日：2024-09-17

申请号：US17345159

申请日：2021-06-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Changliang Sheng ,  Shiwen Wang ,  Qisen Huang ,  Cheng Li ,  Chengdu Liang

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/48 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/02

CPC classification number: H01M4/386 ,  H01M4/0404 ,  H01M4/0447 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/382 ,  H01M4/483 ,  H01M4/62 ,  H01M4/628 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2200/00

Abstract: The present application discloses a negative electrode plate, an electrode assembly, a lithium ion battery, preparation process thereof, and apparatus containing lithium-ion battery. The negative electrode plate includes a negative electrode active material layer comprising a negative electrode active material, the negative electrode active material comprising a silicon-based material; a binder-free inorganic dielectric layer disposed on one side of the negative electrode active material layer away from the negative electrode current collector, the inorganic dielectric layer comprising an inorganic dielectric material, and the inorganic dielectric layer including at least a main body portion disposed on the surface of the negative electrode active material layer, the main body portion having a channel penetratingly arranged along a thickness direction of the main body portion; and a lithium metal layer disposed on the surface of the inorganic dielectric layer away from the negative electrode active material layer.

公开(公告)号：US12062812B2

公开(公告)日：2024-08-13

申请号：US17557003

申请日：2021-12-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Xia Hu ,  Yonghuang Ye ,  Qian Liu ,  Quanguo Li ,  Wei Li

IPC: H01M50/51 ,  B60L50/64 ,  H01M10/04 ,  H01M10/0525 ,  H01M50/209 ,  H01M50/249 ,  H01M50/258

CPC classification number: H01M50/51 ,  B60L50/64 ,  H01M10/0413 ,  H01M10/0525 ,  H01M50/209 ,  H01M50/249 ,  H01M50/258 ,  H01M2220/20

Abstract: The present application relates to a battery module and a method and equipment for manufacturing the same, a battery pack, and an apparatus. The battery module includes Type 1 battery cells and Type 2 battery cells connected in series; the Type 1 battery cells and the Type 2 battery cells satisfy the following criteria: 1.01×C1/C2≤N2≤1.25, and C1

公开(公告)号：US12021269B2

公开(公告)日：2024-06-25

申请号：US17815216

申请日：2022-07-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wenwei Chen ,  Xiaona Wang ,  Zige Zhang ,  Qingrui Xue ,  Chengdu Liang

IPC: H01M50/533 ,  H01M4/38 ,  H01M50/169 ,  H01M50/209 ,  H01M50/54 ,  H01M50/566

CPC classification number: H01M50/533 ,  H01M4/386 ,  H01M50/169 ,  H01M50/209 ,  H01M50/54 ,  H01M50/566 ,  H01M2220/20

Abstract: Embodiments provide an electrode assembly, a battery cell, a battery, an electrical apparatus, and a manufacturing method and device. In those embodiments, the electrode assembly includes: an electrode plate, including a main portion and at least one protruding portion. The main portion includes a metal substrate and an active material layer coated on a surface of the metal substrate. The protruding portion is connected to the metal substrate. The metal substrate protrudes along a length direction of the electrode assembly. Along a thickness direction of the electrode assembly, a size of at least a part of the protruding portion is greater than a size of the metal substrate. The electrode assembly according to the Embodiments aims to solve a technical problem of severe heat emission of a tab.

公开(公告)号：US20240186491A1

公开(公告)日：2024-06-06

申请号：US18424845

申请日：2024-01-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu Liang ,  Yongchao Liu ,  Na Liu ,  Yingjie Guan ,  Qisen Huang ,  Wei Fu

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58

CPC classification number: H01M4/366 ,  C01G53/50 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  C01P2004/51

Abstract: The present invention relates to an electrode active material, a preparation method thereof, an electrode, a battery, and an apparatus. The electrode active material includes: a core and a coating layer, where the core includes a ternary material, the coating layer coats the core, the coating layer includes a reaction product of a sulfur-containing compound and a lithium-containing compound, and the reaction product includes element Li, element S, and element O.

公开(公告)号：US11855277B2

公开(公告)日：2023-12-26

申请号：US17971500

申请日：2022-10-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bangrun Wang ,  Na Liu ,  Chengdu Liang ,  Yongchao Liu ,  Xin Sun ,  Haotian Xie

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/0404 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M2004/021 ,  H01M2004/028

Abstract: This application provides a composite positive-electrode material and a preparation method thereof, a positive-electrode plate, a secondary battery, and a battery module, a battery pack, and an apparatus containing such secondary battery. The composite positive-electrode material includes a core and a coating layer covering at least part of a surface of the core, where the core includes a positive-electrode pre-lithiation material, the positive-electrode pre-lithiation material includes a lithium-rich metal oxide, and the coating layer includes a positive-electrode active material.

公开(公告)号：US11764436B2

公开(公告)日：2023-09-19

申请号：US17889422

申请日：2022-08-17

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian Liu ,  Chengdu Liang ,  Xiaofu Xu ,  Quanguo Li ,  Yonghuang Ye ,  Haizu Jin

IPC: H01M50/267 ,  H01M50/51 ,  H01M50/204 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

CPC classification number: H01M50/267 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M50/204 ,  H01M50/51 ,  H01M2004/028

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 and second type of battery cells are battery cells of 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, and N and M are positive integers; a positive electrode plate of the second battery cell contains two or more positive electrode active materials, and when a dynamic SOC of the second battery cell is in a range from 90% to 98%, a change rate ΔOCV/ΔSOC in an OCV relative to the SOC of the second battery cell satisfies 3≤ΔOCV/ΔSOC≤9, in mV/% SOC, where SOC represents a charge state and OCV represents an open circuit voltage.