Taking the automatic winding machine for thermal battery stack as the research object, according to the actual technological requirements of winding, the winding machine for thermal battery stack is designed and the static and dynamic analysis of the winding machine is carried out. The three-dimensional model of the machine is built, and the finite element model of the winding machine is established. The strength of the upper spindle and the lower floor is analyzed in workbench, and the maximum stress and strain of the spindle when clamping the stack and satisfying certain pressure are obtained. The dynamic analysis of the sliding platform is carried out, and the relationship curves of velocity and acceleration of the sliding platform are obtained. The weaknesses of the structure are analyzed to further optimize and improve. Under the same stress, the stress and strain values of the improved structure are obviously reduced, which can meet the working requirements. The above design analysis provides a theoretical basis for the design of thermal battery assembly machine.