Electric vehicles and their drive systems

Abstract

The invention discloses an electric vehicle and its drive system. The drive system includes: a first motor and a second motor connected through a clutch; a first half shaft and a second half shaft connected through a differential; A first-stage deceleration part of the first transmission mechanism connected to the second motor, a first-stage deceleration part of the second transmission mechanism connected to the second motor; a two-stage deceleration part of the first transmission mechanism connected to the first half shaft, The two-stage reduction part of the second transmission mechanism connected with the second half shaft, and the third transmission mechanism connected with the differential gear; The deceleration part is in transmission connection with the third transmission mechanism, and the first-stage deceleration part of the second transmission mechanism is selectively in transmission connection with its two-stage deceleration part and the third transmission mechanism through the second synchronizer. The above-mentioned electric vehicle and its drive system have multiple working modes, which can be better applied to complex road conditions.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, and more specifically relates to an electric vehicle and its driving system. Background technique [0002] The current dual-motor pure electric drive system structure, such as figure 1 as shown, figure 1 It is a schematic diagram of a dual-motor drive system in the prior art. Two motors 1 are respectively connected to a double-stage reduction mechanism 2. The half shafts 3, that is, the output shafts, are independent of each other. A clutch 4 is provided between the two motors 1 for Switch between series and parallel mode of the motor. [0003] When the clutch 4 is separated, it is in parallel mode, which can realize the independent drive of the motor 1 to the half shafts 3 on both sides, and achieve the function of active differential differential torque; when the clutch 4 is combined, it is in series mode, which can realize large torque output on one side but not bad speed. It can...

AI Technical Summary

Problems solved by technology

It can be seen that this scheme has a relatively simple structure, only one gear, and a single speed ratio, so there are few working modes to choose from, and it cannot be well adapted to complex road conditions.

[0004] Therefore, how to solve the technical problem that the dual-motor drive system has few working modes and cannot better adapt to complex road conditions in the prior art has become an important technical problem to be solved by those skilled in the art.

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