公开(公告)号：US11876160B2

公开(公告)日：2024-01-16

申请号：US18148126

申请日：2022-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xinwei Chen ,  Zhimin Dan ,  Chengyong Liu ,  Wei Zhang ,  Yizhen Hou ,  Xian Huang

IPC: H01M10/6571 ,  H01M10/615 ,  H01M10/63

CPC classification number: H01M10/6571 ,  H01M10/615 ,  H01M10/63

Abstract: A heating system includes first and second input ends, first and second battery modules, first switch and second switches, and a control unit. The first switch is connected between first terminals of the first and second battery modules. Second terminals of the first and second battery modules are connected to each other. The second switch is connected between the first input end and the first terminal of the second battery module. The second input end is connected to the first terminal of the first battery module. The first terminals of the first and second battery modules have a same polarity, and the second terminals of the first and second battery modules have a same polarity. The control unit is connected to the first and second switches, and configured to control the first and second switches to be turned on or off.

公开(公告)号：US20230307712A1

公开(公告)日：2023-09-28

申请号：US18322604

申请日：2023-05-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaoning He ,  Wenwen Xue ,  Chengyong Liu ,  Chengbin Zhong

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M50/46 ,  H01M10/0568 ,  H01M10/0565 ,  H01M4/40 ,  H01M4/58 ,  H01M4/525 ,  H01M4/505 ,  H01M50/609 ,  H01M50/204

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M50/46 ,  H01M10/0568 ,  H01M10/0565 ,  H01M4/405 ,  H01M4/5825 ,  H01M4/525 ,  H01M4/505 ,  H01M50/609 ,  H01M50/204 ,  H01M2220/20 ,  H01M2300/0042 ,  H01M2300/0085 ,  H01M2004/027

Abstract: An electrode assembly and a preparation method thereof, a secondary battery, a battery module, a battery pack, and an electric apparatus are provided. The electrode assembly provided by this application includes a positive electrode, a negative electrode, and a separator located between the positive electrode and the negative electrode, where the positive electrode and the separator contain a solid electrolyte, a liquid electrolyte is present between the separator and the negative electrode, and a mass ratio of the solid electrolyte to the liquid electrolyte is 1:1 to 8:1, optionally 2:1 to 6:1.

公开(公告)号：US20220115689A1

公开(公告)日：2022-04-14

申请号：US17556987

申请日：2021-12-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengyong Liu ,  Yongsheng Guo ,  Quan Fan ,  Tao Zhang ,  Chengdu Liang ,  Jun Yang

IPC: H01M10/0525 ,  H01M50/449 ,  H01M50/491 ,  H01M50/431

Abstract: The present application discloses a functionalized separator, a method for preparing the same, a lithium metal battery, and a device comprising the lithium metal battery. The functionalized separator comprises a porous substrate and a functional film layer provided on at least one side of the porous substrate, wherein the functional film layer comprises inorganic particles which are able to reversibly react with metal lithium to form a lithium alloy.

公开(公告)号：US12107224B2

公开(公告)日：2024-10-01

申请号：US17620336

申请日：2019-11-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu Liang ,  Chengyong Liu ,  Yongsheng Guo ,  Quan Fan

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/42 ,  H01M50/46

CPC classification number: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/4235 ,  H01M50/46 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/0025

Abstract: An electrolyte for a lithium-ion battery, a lithium-ion battery, a battery module, a battery pack, and an apparatus are provided. The electrolyte includes an organic solvent, an electrolyte lithium salt dissolved in the organic solvent, and an additive, where the additive is a compound represented by following formula I. The electrolyte can inhibit generation of lithium dendrites in the lithium-ion battery, improve cycle performance of the battery, and also improve flame retardancy of the battery, thereby effectively resolving defects in the existing technology.

公开(公告)号：US11699812B2

公开(公告)日：2023-07-11

申请号：US17509097

申请日：2021-10-25

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Jiawei Fu ,  Chengyong Liu ,  Yongsheng Guo ,  Bobing Hu

IPC: H01M10/0562 ,  H01M10/0525

CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M2300/0068

Abstract: The present application discloses a sulfide solid electrolyte and a method for the preparation thereof, an all solid state lithium secondary battery, and an apparatus containing the all solid state lithium secondary battery. The sulfide solid electrolyte is obtained by compounding at least Li2S, P2S5 and a dopant MxS2O3, wherein M is one or more selected from Na, K, Ba and Ca, and 1≤x≤2.

公开(公告)号：US20220384861A1

公开(公告)日：2022-12-01

申请号：US17816426

申请日：2022-07-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Bobing Hu ,  Shengyuan Huang ,  Chengyong Liu ,  Jiawei Fu ,  Xiaoning He ,  Jieliang Zou ,  Chengbin Zhong

IPC: H01M10/42 ,  H01M4/62 ,  H01M4/38 ,  H01M4/134 ,  H01M4/1395 ,  H01M10/052

Abstract: A negative-electrode plate, a preparation method thereof, and a secondary battery, a battery module, a battery pack, and an electric apparatus including such negative-electrode plate are provided. The negative-electrode plate includes an alkali metal layer and a polymer film layer provided on at least one surface of the alkali metal layer. Surface resistivity of the polymer film layer gradually increases in a thickness direction of the polymer film layer away from the alkali metal layer. When the negative-electrode plate is used in a secondary battery, lithium dendrites can be effectively inhibited.

公开(公告)号：US20220367877A1

公开(公告)日：2022-11-17

申请号：US17810644

申请日：2022-07-05

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Ang Fu ,  Chengyong Liu ,  Yongsheng Guo ,  Jiawei Fu ,  Qian Li ,  Bobing Hu ,  Shengyuan Huang

IPC: H01M4/66 ,  H01M4/04 ,  H01M10/052 ,  H01M4/80

Abstract: This application provides a polymer current collector, a preparation method thereof, and a secondary battery, battery module, battery pack, and apparatus associated therewith. The polymer current collector provided in this application includes polymer film layers, where the polymer film layers include a first polymer film layer and a second polymer film layer, a resistivity of the first polymer film layer is denoted as ρ1, a resistivity of the second polymer film layer is denoted as ρ2, and the current collector satisfies ρ1>ρ2. The polymer current collector in this application can induce to deposit of lithium metal from a low conductivity side to a high conductivity side, avoiding risks of depositing lithium ions on the surface of the current collector and thereby increasing cycle life of lithium metal batteries.