Hybrid two-speed transmission transmission system and hybrid electric vehicle

Abstract

The invention relates to a hybrid two-shift gearbox transmission system. An engine is connected with an input shaft I, a clutch is provided with a driven end and a driving end, the driving end is fixed to the input shaft I, and the driven end is provided with a driven end gear which is meshed with a shift gear; an output shaft gear is fixed to an output shaft and is meshed with a differential mechanism; the shift gear is fixed to the output shaft, and a driving motor is connected with an input shaft II; a planetary gear unit is mounted on the input shaft II, and is provided with a gear ring, a planet carrier, a sun gear, a first clutch, a second clutch, a first brake and a second brake; the first clutch is arranged between the input shaft II and the gear ring; the second clutch is arranged between the input shaft II and the sun wheel; and the first brake is used for locking the sun gear, the second brake is used for locking the gear ring, the planet carrier is fixed to a gear of the input shaft II, the gear of the input shaft II sleeves the input shaft II in a hollow manner, and the gear of the input shaft II is meshed with the shift gear. The invention further provides a hybrid electric vehicle.

Description

technical field [0001] The invention relates to a dual-drive hybrid two-speed transmission for vehicles, in particular to a dual-drive hybrid two-speed transmission transmission system for a front-transverse front-drive vehicle. Background technique [0002] A hybrid vehicle is a vehicle that uses more than two sources of energy. The most common gasoline-electric hybrid vehicle has an engine and a motor, the engine consumes fuel, and the motor consumes power from the power battery. [0003] At present, the automatic transmission of hybrid electric vehicles generally only has one gear and one speed ratio, so that the engine and drive motor may not work in the most efficient area under certain working conditions; and some two-speed hybrid transmissions use synchronizers. For gear shifting, since a drive motor is installed on the input shaft, its inertia is large, and the capacity of the synchronizer is relatively limited, so the size of the synchronizer must be designed to be...

AI Technical Summary

Problems solved by technology

[0005] 1. For a hybrid transmission with only one gear, the engine and electric motor cannot work in the optimal efficiency range under certain working conditions;

[0006] 2. A synchronizer is used to shift gears between two gears. The synchronization capacity of the synchronizer is low, which is prone to problems such as gear shifting and grinding;

[0007] 3. A set of special operating mechanism is required to manipulate the synchronizer to shift gears;

[0008] 4. There is a phenomenon of power interruption during the shifting process

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