Transmission power transmission system, transmission and vehicle

Abstract

An embodiment of the invention provides a transmission power transmission system, a transmission and a vehicle, and relates to the field of vehicle engineering. The transmission power transmission system comprises a first input shaft, an intermediate shaft, a reduction gear set and a second input shaft; the first input shaft is sequentially provided with a plurality of gear driving gears in the length direction of the first input shaft; the middle shaft is sequentially sleeved with a plurality of gear driven gears in an empty mode in the length direction of the intermediate shaft; the gear driven gears mesh with the gear driving gears in a one-to-one correspondence mode; the intermediate shaft is in transmission connection with the reduction gear set; a synchronizer is arranged on the intermediate shaft and used for selectively driving one of the multiple gear driven gears to be in transmission with the intermediate shaft; the second input shaft is in transmission connection with the reduction gear set and provided with a clutch used for being in transmission connection with power input equipment. The transmission power transmission system can shift gears according to the running state of the vehicle, so that a driving motor of the electric vehicle runs in a high-efficiency interval, and the battery life is prolonged.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a transmission power transmission system, a transmission and a vehicle. Background technique [0002] With the further shortage of energy sources, pure electric vehicles account for more than 80% of the new energy vehicles, and the current pure electric vehicles on the market all use single-stage reducers, that is, traditional pure electric vehicles use single-stage reducers with fixed speed ratios The performance of the device can basically meet the driving requirements of the vehicle. [0003] The research of the inventors found that the pure electric vehicle adopts a single-stage reducer with a fixed speed ratio, which has the following problems: low-speed starting acceleration, high-speed cruising speed and climbing performance cannot be taken into account; the efficient working range of the motor is limited, the battery power is limited, and the electric When th...

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Problems solved by technology

[0003] The inventors found that the single-stage speed reducer with a fixed speed ratio for pure electric vehicles has the following problems: low-speed starting acceleration, high-speed cruising speed and climbing performance cannot be taken into account; the efficient working range of the motor is limited, the battery power is limited, and the electric When the car is running at high speed, the power consumption of the vehicle increases significantly, and the single speed ratio leads to the general effect of braking energy recovery, which reduces the battery life of pure electric vehicles

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