The utility model discloses a but heat dissipation and heat retaining battery flat are adjusted in push -and -pull, including hexahedron support frame, hexahedron support frame bottom surface and top surface are sealed, but at least simultaneously install the heat preservation window of push -and -pull on four sides all around, and other face seals according to ambient temperature push -and -pull heat preservation window, and then realize the heat dissipation of battery flat and heat preservation and adjust. The heat preservation window includes to comprise to outer heat preservation, flame retardant coating and metal casing interior, the heat preservation window all around still the parcel have the sealing strip. The utility model relates to a become austral window, sliding sash formula battery flat, when external environment temperature is high, can pull open the window, realize the under -deck heat dissipation through the exhaust fan, the temperature is on the low side, and the window is closed to the accessible, through introducing external heat source, improves battery operating temperature, because the heat preservation window adopts insulation material, can maintain the battery flat temperature to avoid lasting providing of heat source, extend electric automobile's use region, throughout the year can both normal use at cold area and south area.