Dual-motor multi-mode pure-electric drive system

Abstract

The invention discloses a dual-motor multi-mode pure-electric drive system and a drive mode of the dual-motor multi-mode pure-electric drive system. The system comprises a first motor, a second motor,a first motor reduction gear set, a second motor reduction gear set, a power input shaft, a one-way clutch, a front planet row, a rear planet row, an electronic control clutch and a brake. The frontplanet row and the rear planet row are connected through a planet carrier, a front planet row sun gear is connected with the input shaft through the brake and the electronic control clutch, a front planet row gear ring is fixedly connected with the input shaft, a rear planet row sun gear is fixedly connected with the input shaft, and a rear planet row gear ring is fixedly connected with the inputshaft. Through operation of the electronic control clutch and the brake, conversion of a low-speed gear and a high-speed gear is achieved. Through combined output of the two motors, the combination ofthe power performance and the economical efficiency is optimal. The system is easy to operate, free of power interruption, easy to achieve and high in practicability.

Description

technical field [0001] The invention relates to the field of power drive systems, in particular to a dual-motor multi-mode pure electric drive system and its drive mode. Background technique [0002] Automobiles are one of the main sources of energy consumption and pollution emissions. With the reduction of oil resources and the aggravation of environmental pollution, the world is accelerating the research and development of new energy vehicles. As a mainstream direction of new energy, pure electric vehicles have many technical difficulties that need to be overcome. [0003] At present, according to different transmission methods, there are mainly two domestic pure electric drive schemes: one is a single-stage deceleration scheme, which cannot realize the rational use of motor efficiency under different working conditions, such as high speed driving with high speed and low speed. Torque, and low-speed high-torque when climbing at low speeds, are all areas of motor inefficie...

AI Technical Summary

Problems solved by technology

[0003] At present, according to different transmission methods, there are mainly two domestic pure electric drive schemes: one is a single-stage deceleration scheme, which cannot realize the rational use of motor efficiency under different working conditions, such as high speed and low torque when driving at high speeds, and low speed and high torque when climbing at low speeds.

Another solution is to use the traditional speed change device, which does not make effective use of the characteristics of the motor, such as stepless speed regulation and smooth power, relative to the internal combustion engine.

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