Ningde Amperex Technology Limited

Hua Zhou

Lei Li

A positive electrode plate includes a composite current collector, a functional coating, and a positive electrode active material layer, where the functional coating is disposed on at least one surface of the composite current collector, and is located between the composite current collector and the positive electrode active material layer; and the functional coating comprises a positive electrode active material, and a D50 particle size of the positive electrode active material is less than or equal to 5 μm. This can reduce the stress applied to the composite current collector during a cold pressing process without losing energy density. In addition, this also can mitigate misalignment of a metal layer and a polymer film due to inconsistent stretching extents, and alleviate problems such as cracking of the metal layer of the composite current collector and the metal layer tending to fall off from the polymer film.

Positive electrode plate, and electrochemical apparatus and electronic apparatus including such positive electrode plate

A battery cell includes an electrode assembly and a packaging bag configured to accommodate the electrode assembly. The electrode assembly includes a first electrode plate, a separator, and a second electrode plate that are stacked. A first tab is disposed on the first electrode plate. The first tab protrudes from the packaging bag. The first tab includes a connecting portion accommodated in the packaging bag. A first insulation layer is disposed on the connecting portion. The first insulation layer includes a free end towards the electrode assembly.

Growing community of inventors

Ningde, China

Hua Zhou