US Patent 11679670 Two-gear bridge driving system and vehicle

A two-gear bridge driving system. A speed changer of the two-gear bridge driving system includes a dual-planetary gear mechanism, the dual-planetary gear mechanism has only one sun gear, the sun gear is fixed with respect to a speed changer input gear, and the sun gear and one planetary gear in the dual gear are always in an engagement state. Compared with the two-gear bridge driving system in the prior art, the two-gear bridge driving system provided here is simpler in structure, lower in costs and lower in weight, and good NVH control is easily achieved. Also provided is a vehicle including the two-gear bridge driving system.