Lithium ion battery tank of electromobile

The utility model discloses a lithium ion battery tank of an electromobile. The lithium ion battery tank comprises a battery tank body, an upper cover, a bottom plate, a middle baffle plate, a lithium ion battery and a control box, wherein an air inlet is formed in the front end of the battery tank body, and middle and rear baffle plates are respectively arranged in the middle and at the rear ends of the battery tank body and ventilating holes are formed in the middle and rear baffle plates; the lithium ion battery is placed between the front end of the battery tank body and the middle baffle plate, the upper and lower ends of the lithium ion battery are respectively provided with upper and lower isolating shells in a sleeving manner to form a cooling air channel which is communicated with an air inlet in the lower end of the battery tank body, and radiating air is discharged from the air outlets of the baffle plates. The lithium ion battery tank disclosed by the utility model has the beneficial effects that the cooling air channel is formed by fully using a gap between two adjacent single batteries which are arranged in parallel so as to radiate the surfaces of the batteries through the air inlet in the lower end, and moreover, heat generated by connecting resistance among the batteries is cooled through the air inlet in the upper end, so that the temperature of the battery tank is uniform.