Hybrid power system and vehicle

A hybrid power system comprises a first motor (EM1) and a second motor (EM2), the first motor (EM1) and an engine (ICE) are coaxially arranged and are in transmission connection all the time, and the second motor (EM2) and the first motor (EM1) are arranged in parallel and staggered; a first input shaft (S1) of the transmission is drivingly coupled to a first electric machine (EM1) in a controlled manner via a first clutch unit (C1), a second input shaft (S2) is drivingly coupled to the first electric machine (EM1) in a controlled manner via a second clutch unit (C2), and a third input shaft (S3) is drivingly coupled to a second electric machine (EM2) all the time. The first input shaft (S1), the second input shaft (S2) and the third input shaft (S3) are in transmission connection with the intermediate shaft (S4) through different gear pairs all the time. According to the hybrid power system, the axial size of the whole system is reduced, the packaging space of the whole system is improved, the structure is s