Cathode collector plate and cylindrical battery

Abstract

A negative electrode collector plate and a cylindrical battery, the negative electrode collector plate comprising: a main body formed in a plate shape and having an upper surface and a lower surface having a circular outer contour; wherein a diversion trench is formed in the negative collector plate, the diversion trench is concave downwards relative to the upper surface of the main body, the diversion trench is provided with a central part and an extension part, the central part is positioned in the center of the negative collector plate, and the extension part extends outwards from the central part.

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