Electric automobile and driving system thereof

Abstract

The invention discloses an electric automobile and a driving system thereof. The driving system comprises a first motor, a second motor, a first half shaft, a second half shaft, a first deceleration part of a first transmission mechanism, a first deceleration part of a second transmission mechanism, a second deceleration part of the first transmission mechanism, a second deceleration part of the second transmission mechanism and a third transmission mechanism, wherein the first motor and the second motor are connected through a clutch; the first half shaft and the second half shaft are connected by a differential mechanism; the first deceleration part of the first transmission mechanism is connected with the first motor in a transmission mode, and the first deceleration part of the secondtransmission mechanism is connected with the second motor in a transmission mode; and the second deceleration part of the first transmission mechanism is connected with the first half shaft in a transmission mode, the second deceleration part of the second transmission mechanism is connected with the second half shaft in a transmission mode, the third transmission mechanism is connected with the differential mechanism in a transmission mode, the first deceleration part of the first transmission mechanism is selectively connected with the second deceleration part of the first transmission mechanism and the third transmission mechanism through a first synchronizer, and the first deceleration part of the second transmission mechanism is selectively connected with the second deceleration partof the second transmission mechanism and the third transmission mechanism through a second synchronizer in a transmission mode. The electric automobile and the driving system thereof have many workingmodes and can be well 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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