▎ 摘　　要

NOVELTY - A battery casing suitable for automatic heating and heat preservation in cold area, comprising a shell cover and a shell; the shell cover is detachably covered on the top of the shell; the shell is orderly provided with a shell layer from outside to inside; an insulating layer and an anti-corrosion inner layer; between the insulating layer and the anti-corrosion inner layer is provided with a graphene heating layer; the shell is provided with a power supply interface connected with the positive and negative electrodes of the graphene heating layer; the power supply interface is connected with the temperature control switch through the wire. the advantages of the utility model are as follows: convenient installation, fast heating, heating uniformly; is provided with a temperature control switch; it can automatically heat and automatically cut off; the safety is stronger; the heat preservation is more intelligent; is provided with a heat preservation layer; in the power-off period, it can maintain constant temperature; it is suitable for cold area; The graphene heating sheet does not affect the function even if there is slight damage, and the service life is long.