Hybrid multi-mode switching continuously variable transmission system

A hybrid multi-mode switching continuously variable transmission system, said system comprising an input component, an output component, a clutch assembly, a brake, a hydraulic transmission assembly and a planetary gear assembly, wherein the input component is connected with the hydraulic transmission assembly, the output component is connected with the planetary gear assembly, the clutch assembly connects the input component and the hydraulic transmission assembly to the planetary gear assembly and the brake and the clutch assembly provide a stepped forward or backward transmission ratio between the input component and the output component, wherein a hydraulic transmission mode, a mechanical transmission mode, a hydro-mechanical transmission mode, and a reverse hydraulic transmission mode are provided between the input component and the output component by adjusting a displacement ratio of the hydraulic transmission assembly and selectively controlling an engagement between the clutch assembly and the brake, and

• wherein the planetary gear assembly comprises a planetary gear split mechanism and a planetary gear convergence mechanism;
• the clutch assembly comprises a first clutch, a second clutch, and a third clutch;
• a gear ring of the planetary gear split mechanism is connected with a sun gear of the planetary gear convergence mechanism;
• the first clutch is configured to selectively connect the gear ring of the planetary gear split mechanism to a planet carrier of the planetary gear split mechanism to rotate together;
• the second clutch is configured to selectively connect the sun gear of the planetary gear convergence mechanism to a planet carrier of the planetary gear convergence mechanism to rotate together;
• the third clutch is configured to selectively connect the hydraulic transmission assembly to the planetary gear convergence mechanism to rotate together;
• and the hydro-mechanical transmission mode between the input component and the output component is provided by adjusting the displacement ratio of the hydraulic transmission assembly and selectively controlling the engagement of the first clutch, the second clutch and the third clutch.