Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Limited

Chao Guo

Shisong Li

Huihui Liu

Nengwu Liao

Wei Li

Peng Jin

Yinxiang Lin

Xuefeng Kang

Chao Yang

Shengwu Zhang

Zhiyang Wu

Siying Huang

Yaohui Wang

Haihao Shi

Jianbao Xu

Chao Jin

Tiefeng Wu

Shaojun Qiu

Lijun Li

Yinyong Qiao

Kang Wang

Wang Zhang

Wengang Chen

Tianyi Gao

Jirong Li

Jialong Wu

Jinlong Liu

Chenglong Yuan

Ning Peng

A coating device includes a first coating mechanism configured to coat a first surface of a substrate, a first oven drying mechanism arranged downstream of the first coating mechanism, a second coating mechanism arranged downstream of the first oven drying mechanism and configured to coat a second surface of the substrate opposite to the first surface, and a second oven drying mechanism arranged downstream of the second coating mechanism. The coating device further includes a third oven drying mechanism arranged downstream of the second oven drying mechanism and configured to further oven dry the coating on the second surface such that the coating on the first surface and the coating on the second surface are evenly dried.

Coating device with multiple oven drying mechanisms

The present application provides an oven drying apparatus and a coating device. The oven drying apparatus comprises an oven drying chamber and a heating assembly. The oven drying chamber is equipped with a first oven drying side having a plurality of first air inlet portions for fluid medium to enter the oven drying chamber. The heating assembly is disposed on the first oven drying side. The first oven drying side is further provided with at least one air return portion provided between two adjacent first air inlet portions, and the air return portion being configured for fluid medium in the oven drying chamber to be discharged from the oven drying chamber. The arrangement of an air return portion between two first air inlet portions can discharge fluid medium between the two first air inlet portions and take away the heat, thus avoiding accumulation of heat between the two first air inlet portions.

Oven drying apparatus and coating device

This application discloses processing equipment, electrode plate processing equipment, battery processing equipment, and a sheet processing method. The processing equipment includes a rotation roller and a laser assembly. The rotation roller is rotatable around a first axis. An outer peripheral surface of the rotation roller around the first axis is configured to allow winding of a sheet. The outer peripheral surface of the rotation roller is able to move synchronously with the sheet around the first axis. The laser assembly is disposed on the rotation roller and able to rotate with the rotation roller. The laser assembly is configured to drive a laser beam to be emitted toward the sheet, and further configured to drive the laser beam to move linearly and/or oscillate around a second axis that intersects the first axis.

Processing equipment, electrode plate processing equipment, battery processing equipment, and sheet processing method

Disclosed is method and device for forming an electrode plate. The method includes: performing tab cutting on a substrate so that the substrate forms a body portion, an edge portion connecting to the body portion, and a plurality of tabs that connect to the body portion but are separated from the edge portion; and performing edge portion cutting on the substrate to separate the edge portion from the body portion. The electrode plate is formed in two steps. First, the tab and the edge portion are separated, so that in the process of cutting, impact of vibration of the edge portion on the tab is small, greatly reducing the risk of deformation of the tab caused by vibration of the edge portion and damage to the tab caused by being pulled by the edge portion. Second, edge portion cutting separates the edge portion from the body portion.

Method and apparatus of forming electrode plate

This application discloses an electrode plate rolling apparatus and an electrode plate rolling method that are configured to roll an electrode plate. The electrode plate includes a coated region and an uncoated region. The electrode plate rolling apparatus includes a roller group, a heating part, and a cooling part. The heating part is configured to heat the electrode plate, and the cooling part is configured to cool the electrode plate. The heating part further includes an extension assembly, and the extension assembly can extend the uncoated region when the heating part heats the electrode plate. The electrode plate passes through the cooling part after passing through the heating part. The heating part and the cooling part are configured to reduce a difference between an extensibility parameter of the uncoated region and an extensibility parameter of the coated region.

Electrode plate rolling apparatus and electrode plate rolling method

The present application relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a positive active material layer, and a binding layer disposed between the current collector and the positive active material layer, the binding layer comprising a polymer material, a conductive material, and an inorganic filler, wherein the polymer material comprises a binding layer matrix and the binding layer matrix is an oil-dispersible polymer material having a solubility in NMP at 130&#xb0; C. for 5 minutes, which is 30% or less of the solubility of PVDF under the same conditions. The positive electrode plate can improve the safety performance of the electrochemical device (for example, a capacitor, a primary battery, a secondary battery, or the like) under abnormal conditions such as nailing penetration.

Positive electrode plate and electrochemical device containing the same

The present invention relates to a battery, comprising a positive electrode plate, a separator and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active materials on at least one surface of the positive electrode current collector in which the underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material, and a first conductive material and in which the upper positive active material layer comprises a second positive active material, a second polymer material, and a second conductive material and the first polymer material comprises an oil-dispersible polymer material having a solubility in NMP at 130&#xb0; C. for 5 minutes, which is 30% or less of the solubility of PVDF under the same conditions. The battery exhibits good safety performance and improved electrical performance.

Battery

The present disclosure provides an anode electrode slurry suspending agent, an anode electrode plate and an energy storage device, the anode electrode slurry suspending agent has a structural formula composed of a main chain containing carbon and a side chain, the side chain comprises a first side chain Rand a second side chain R; the first side chain Rcontains &#x2014;R&#x2014;CONH, the second side chain Rcontains &#x2014;(C&#x2550;O)ORor &#x2014;O(C&#x2550;O)R, the anode electrode slurry suspending agent can significantly improve coating speed of the anode electrode slurry and can ensure that there is no drying-cracking phenomenon of the anode electrode film at the same time, thereby improving productivity and quality rate of coating process of the anode electrode plate and in turn significantly improving production capacity of the energy storage device.

Anode electrode slurry suspending agent, anode electrode plate and energy storage device

Growing community of inventors

Ningde, China

Chao Guo