Vehicle double-motor power device

Abstract

The invention relates to a vehicle double-motor power device. A high-speed motor and a low-speed motor are employed for cooperation, and the high-speed motor and the low-speed motor operate together during starting, acceleration, and climbing so that the output power and torque are increased; high-speed driving is single-motor driven via the high-speed motor, the low-speed motor is separated from an output shaft and a deceleration mechanism via a single clutch, power consumption is reduced, the efficiency of the motor is improved, and normal operation of the device is not affected. According to the power device, the operation state of the motors is monitored in real time via a controller of the device, the work states of the two motors are controlled according to the operation state of the motors, non-polar switching of power output is realized, the structure is reasonable, the operation is simple, and the comfort is greatly improved.

Description

technical field [0001] The invention relates to motor technology, in particular to a vehicle dual-motor power device. Background technique [0002] At present, the general electric vehicles are driven by one motor. At present, there are mainly high-speed motors with low torque at low speeds, while low-speed motors have limited driving speed, high energy consumption and no energy saving. In order to solve this problem, the current common practice is Adopt gearbox to adjust the output torque again, as the announcement is CN103075472A discloses a kind of electric vehicle gearbox, including box body, is provided with motor input shaft, speed reduction mechanism and power output mechanism inside the box body, it is characterized in that: in the described power A set of shift pinion is arranged between the output mechanism and the deceleration mechanism, and a synchronization mechanism is arranged beside the shift gear shaft. The synchronization mechanism is connected with the shi...

AI Technical Summary

Problems solved by technology

[0002] At present, the general electric vehicles are driven by one motor. At present, there are mainly high-speed motors with low torque at low speeds, while low-speed motors have limited driving speed, high energy consumption and no energy saving. In order to solve this problem, the current common practice is Adopt gearbox to adjust the output torque again, as the announcement is CN103075472A discloses a kind of electric vehicle gearbox, including box body, is provided with motor input shaft, speed reduction mechanism and power output mechanism inside the box body, it is characterized in that: in the described power A set of shift pinion is arranged between the output mechanism and the deceleration mechanism, and a synchronization mechanism is arranged beside the shift gear shaft. The synchronization mechanism is connected with the shift gear shaft through claws. Connect the device; the gear shift pinion includes a spline shaft, an output gear, a high-speed gear and a low-speed gear, the output gear, the high-speed gear and the low-speed gear are coaxially arranged on the spline shaft, and the output gear is clamped on the spline shaft The high-speed gear and the low-speed gear are both sleeved on the spline shaft through bearings, and the high-speed gear and the low-speed gear are respectively meshed with the high-speed output gear and low-speed output gear of the reduction mechanism. There are also two driving teeth keys and a driven teeth key between the gear and the low-speed gear. The two driving teeth keys are fixedly connected to the sides of the high-speed gear and the low-speed gear respectively, and the driven teeth keys are located between the two driving teeth keys. Between, the driven tooth key and the spline shaft are clamped or integrated, and the driving tooth key and the driven tooth key are sleeved on the clutch ring, and the inside of the clutch ring is provided with clutch teeth that cooperate with the driving tooth key and the driven tooth key. There is an annular groove on the outer edge of the clutch ring, and the claws on the synchronization mechanism are snapped into the annular groove

[0003] Although this kind of electric vehicle gearbox realizes the switching of motor torque, due to the complex structure and heavy weight, it increases the load on the motor. At the same time, the gear switching of the gearbox is not smooth enough, and the driving experience is poor.