Lithium battery shell

The utility model relates to a lithium battery shell. The lithium battery shell is provided with a shell wall which is of a layer structure, wherein the shell wall comprises an outer plastic layer and an inner obstructing layer which are fixedly connected together; the obstructing layer is an obstructing plastic plate layer or an aluminum-plastic composite film layer which is provided with an aluminum foil layer in the middle and plastic film layers at two sides. In the obstructing layer used by the lithium battery shell, no metal is exposed on the inner surface of the shell wall of the lithium battery shell, so that the corrosion resistance of the lithium battery shell is improved; due to the obstructing layer, the obstructing performance of the lithium battery shell is improved, the service life of the lithium battery shell is significantly prolonged, and the probability of abnormal accidents such as expansion and capacity fade in the using process of the lithium battery is reduced. Meanwhile, due to the high tenacity of the obstructing layer, the fracture area of the battery shell after the battery is squeezed, and the area of a battery core contacted with the external oxygen is reduced, so that the combustion probability of high-capacity batteries is reduced, and the usage safety of the lithium battery is improved.