Electric vehicle battery heating and heat preservation circulation system and electric vehicle

The utility model provides an electric automobile battery heating and heat preservation circulation system and an electric automobile, in the system, a first electronic water pump is respectively connected with an in-automobile battery system and a water cooling condenser, and an expansion water tank is arranged between the water cooling condenser and the first electronic water pump; the first expansion water tank is further connected with an in-vehicle battery system through a first overflow pipe; the in-vehicle battery system, the water-cooled condenser, the first electronic water pump and the first expansion water tank form a first loop; the first loop is in coupling connection with the air source circulation loop and the water source circulation loop through the water cooling condenser, and the air source circulation loop and the water source circulation loop are connected in parallel. According to the scheme, the air source circulation loop and the water source circulation loop are connected in parallel