Contemporary Amperex Technology (hong Kong) Limited

Ningde Amperex Technology Limited

Xiao Chen

Shaocong Ouyang

Pan Wang

Huijun Liu

Changchuan Shi

Huanji Liu

Ziyi Yin

Yangfang Ling

This application provides a positive electrode plate, a negative electrode plate, a battery cell, a battery, and an electric apparatus. An electrode plate includes a current collector and an active material layer, where the current collector includes a body portion and a tab. A ratio of the product of a cross-sectional area of a root of each tab and a conductivity of the current collector to a length between central axes of two adjacent tabs to the product of a width of the active material layer and a mass per unit area of the active material layer satisfies that a design factor of a positive tab is at least 0.1 and a design factor of a negative tab is at least 0.02.

Positive electrode plate, negative electrode plate, battery cell, battery, and electric apparatus

An electrode assembly formed by winding a first electrode plate, a separator and a second electrode plate. The first electrode plate comprises a first current collector and a first active material layer arranged on a surface of the first current collector. A winding terminating end of the first electrode plate is positioned on an outer side of a winding terminating end of the second electrode plate facing away from a winding core. The first active material layer on the winding terminating end of the first electrode plate covers one surface of the first current collector facing toward the second electrode plate, The electrode assembly further comprises a first adhesive member arranged on an outer surface of the electrode assembly. The electrode assembly takes the winding terminating end of the first electrode plate as the tail end. The application further provides a battery having the same.

Electrode assembly and battery

Growing community of inventors

Ningde, China

Xiao Chen