Integrated two-gear hybrid electric vehicle driving system with double-rotor motor

Abstract

The invention provides an integrated two-gear hybrid electric vehicle driving system with a double-rotor motor. The integrated two-gear hybrid electric vehicle driving system comprises an engine, a multi-disc wet type friction clutch, the double-rotor motor, a double-clutch two-gear speed changer, a differential mechanism, an inverter controller and a power battery. An electromagnetic type power coupling mechanism is composed of the multi-disc wet type friction clutch and the double-rotor motormulti-disc wet type friction clutch, and an engine starting mode, a parking and charging mode, a pure electric driving mode, an engine independent driving mode, a hybrid driving mode and a regeneration braking mode of a vehicle can be realized respectively; rapid and smooth switching of low-speed gears and high-speed gears of the vehicle can be realized through the double-clutch two-gear speed changer; the driving system integrates the multi-disc wet type friction clutch and the double-rotor motor, and the double-clutch two-gear speed changer and the differential mechanism, and has the advantages of high transmission efficiency, compact structure, high integration degree and convenience for arrangement and light weight of the whole vehicle; the dynamic property, economical efficiency, emission performance and comfort of the whole vehicle are improved.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicles, and in particular relates to a drive system of a two-speed hybrid electric vehicle with an integrated double-rotor motor. Background technique [0002] The key to the drive system of hybrid electric vehicles that combines the advantages of pure electric vehicles and traditional fuel vehicles is the power coupling mechanism. At present, the drive system of hybrid electric vehicles adopts two types of power coupling mechanisms: (1) The gear-type mechanical power coupling mechanism based on the planetary gear mechanism is a contact type power coupling mechanism. The most typical example is the hybrid power system of the Toyota Prius sedan. (THS), but the use of multi-motor structure makes the structure of the hybrid power system more complicated both in manufacture and control, and the maintenance cost is high and the cost is too high; (2) The series electromechanical integrated pow...

AI Technical Summary

Problems solved by technology

At present, the drive system of hybrid electric vehicles adopts two types of power coupling mechanisms: (1) The gear-type mechanical power coupling mechanism based on the planetary gear mechanism is a contact type power coupling mechanism. The most typical example is the hybrid power system of the Toyota Prius sedan. (THS), but the use of multi-motor structure makes the structure of the hybrid power system more complicated both in manufacture and control, and the maintenance cost is high, and the cost is too high; (2) The series electromechanical integrated power coupling mechanism connects the engine output shaft It is directly connected in series with the rotor shaft of the motor, and the motor and the engine are dynamically coupled by means of coaxial torque superposition. The most typical example is the mild and moderate hybrid power system based on ISG, which has the advantages of compact structure, high reliability and low cost. Low advantages, but fuel saving is not obvious, can not meet people's requirements for fuel economy

[0003] At present, electric vehicles or fuel vehicles adopt multi-speed automatic transmissions, which make the structure of the transmission system complex, increase the weight of the vehicle, and reduce energy utilization efficiency, or use a single fixed speed ratio reducer, so that the engine and drive motor often work in the low efficiency area , it is difficult to take into account the requirements of vehicle power and economy

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