A dual-motor power unit for an electric vehicle
A technology for power plants and electric vehicles, which is applied in electric power plants, power plants, control devices, etc., can solve the problem of inability to balance power performance and overall efficiency, and achieve the effects of easy mode switching, simple structure, and improved overall efficiency.
Active Publication Date: 2018-11-27
FUJIAN WANRUN NEW ENERGY TECH
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Problems solved by technology
[0010] The technical problem to be solved by the present invention is to provide a dual-motor power device for an electric vehicle, which is used to solve the problem that the power performance and the overall efficiency cannot be balanced in the existing dual-motor power system
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[0037] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.
[0038] see figure 2 In the embodiment of the present invention, the electric vehicle dual-motor power unit includes an auxiliary motor 1, a rotating shaft brake 2, a controller ( figure 2 not shown in the figure), clutch 3, main drive motor 4, planetary gear train 5, universal joint 6, differential 7, drive wheel 8 and power battery pack 10, the auxiliary motor 1 includes an auxiliary motor controller 9 , the main drive motor includes a drive motor controller 11. Described planetary gear system 5 comprises sun gear, planetary gear, ring gear and the planet carrier that is connected to each planetary gear, wherein, the number of teeth of sun gear is Zs, the number of teeth of ring gear is Zr, and k=Zr / Zs is planetary gear train Characte...
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The invention discloses a dual-motor power device for an electric vehicle. The dual-motor power device comprises a controller, a main driving motor, an auxiliary motor, a planet gear train and a clutch. A rotating shaft of the main driving motor is connected with a sun wheel of the planet gear train, and a planet frame of the planet gear train serves as a power output end; a driving portion of the clutch is connected with a gear ring of the planet gear train, and a driven portion of the clutch is connected with the sun wheel of the planet gear train; and a rotating shaft of the auxiliary motor is connected with the gear ring of the planet gear train, and a brake is used for braking a rotating shaft of the auxiliary motor and the gear ring. The dual-motor power device for the electric vehicle is simple in structure and achieves a torque coupling driving manner and a rotating speed coupling driving manner.
Description
technical field [0001] The invention relates to the field of electric vehicles, in particular to a dual-motor power device for an electric vehicle. Background technique [0002] Different from traditional fuel vehicles, the power system structure diagram of conventional centralized drive pure electric vehicles is as follows: figure 1 shown. The drive motor drives the vehicle to run through the deceleration and torque increase of the transmission or reducer, and the motor controller controls the different speeds and torques of the motor to meet the driving power requirements of the vehicle. Due to the use of a single motor drive, the motor should have a wide range of speed regulation, high torque output at low speed and certain power reserve, high efficiency and high reliability at high speed. Obviously, such a high-speed motor is too difficult to manufacture, and the motor cannot work with high efficiency under various working conditions, resulting in low overall efficienc...
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IPC IPC(8): B60K1/02B60K17/28
Inventor 余捷胡旭军李芳慧雷学国张庆永
Owner FUJIAN WANRUN NEW ENERGY TECH