Method for modeling one-dimensional thermal model of battery pack by utilizing 3D and 1D coupling calibration

The invention discloses a battery pack one-dimensional thermal model modeling method utilizing 3D and 1D coupling calibration, and the battery pack one-dimensional thermal model mainly consists of three parts: 1, a battery pack part which is mainly described through the mass, the heat capacity, the heat exchange area and the initial temperature; the heat conduction part is mainly described throughthe maximum heat exchange area, the total thickness and the equivalent heat conduction coefficient; and 3, a heat convection part, wherein the main description information comprises mass, specific heat capacity, effective heat exchange area and convective heat exchange coefficient. According to the method, modeling is carried out in 3D simulation software, and parameter calibration is carried outon the 1D model according to the average temperature of the 3D battery cell and the refrigerant outlet temperature. And finally, comparing 3D and 1D closed-loop simulation results, and ending the modeling work. The modeling m