▎ 摘　　要

NOVELTY - The utility model claims a lithium ion secondary battery suitable for low temperature, wherein the lithium battery comprises: a battery main body; the battery main body comprises at least two output circuits connected in parallel; a heating element; the heating element comprises a graphene carbon nano-tube material layer; the graphene carbon nano-tube material layer at least partially covers the outer side of the battery main body; the graphene carbon nano-tube material layer is connected with one output circuit; the graphene carbon nano-tube material layer is electrified to heat the battery main body. The lithium battery provided by the utility model generates heat by electrifying the graphene carbon nano-tube material layer, and radiates outwards in the form of infrared wave, so as to realize the heating of the battery main body, avoids the lithium battery temperature is too low and cannot work normally, and improves the service life of the lithium battery. and using the battery main body to supply power to the graphene carbon nano-tube material layer; the graphene carbon nano-tube material layer is the battery main body heating; the lithium battery structure is simple, the cost is low.