Cover plate for a battery, housing body for a battery, battery and battery pack

Abstract

A cover plate for a battery, characterized in that it comprises a plurality of stacked plate bodies, wherein the plurality of plate bodies comprises a top plate (201) and a bottom plate (202) located on opposite sides in a stacking direction, wherein the top plate (201) comprises a metal element, wherein the metal element comprises at least one of an aluminum element and a copper element, wherein the bottom plate (202) comprises a titanium element, wherein an outer edge of the top plate (201) is located on an inner side of an outer edge of the bottom plate (202).