Double-motor plate type infinitely-variable-speed power system

Abstract

The invention discloses a double-motor plate type infinitely-variable-speed power system. A master controller of the double-motor plate type infinitely-variable-speed power system is electrically connected to an accelerator pedal, a brake panel, an energy storage power supply, a first motor, a second motor and a gear shifting mechanism separately; the output shaft of the first motor is connected to a first star type mechanism; one end of the output shaft of a second motor is separately connected to a second star type mechanism and a one-way clutch; the other end of the output shaft of the second motor is connected to a gear shifting plate; the gear shifting plate is connected to the gear shifting mechanism in a matched manner; a rotary arm is mounted on a box body through a bearing; the first star type mechanism and the second star type mechanism are connected to the rotary arm; the outer side of the rotary arm is connected to an output transition gear set; the output transition gear set is connected to a differential mechanism; a right output half shaft is connected to a right output end of the differential mechanism; and a left output half shaft is connected to a left output end of the differential mechanism. According to the double-motor plate type infinitely-variable-speed power system disclosed by the invention, single motor power of a power transmission mechanism is effectively reduced, limit speed of motors is reduced, use, repair and maintenance cost is reduced, operation efficiency, reliability and economical efficiency of the system are improved, and the service life of the system is prolonged.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a double-motor disc-type continuously variable transmission power system suitable for pure electric vehicles. Background technique [0002] With that caused a lot of pressure. In order to solve the above problems, there is an urgent need for major innovations in vehicle engineering drive technology, one is hybrid technology, and the other is pure electric technology. In the current pure electric power system, most vehicles use motors and fixed speed ratio gearboxes to drive the vehicle, which can meet the requirements of low-speed electric vehicles in some areas to a certain extent. However, for medium and high-speed full-time domain electric vehicles, there are technical problems that cannot satisfy low-speed high-torque, high-speed, high-efficiency, and high-reliability. [0003] In order to solve the above problems, there are currently several solutions for the power tra...

AI Technical Summary

Problems solved by technology

However, the motor of an electric vehicle gradually increases from 0 speed to the specified speed, and the traditional hydraulic shift technology that has been formed for nearly 100 years is no longer applicable.

The third is that the motor overload torque is large, the acceleration is large, and the input torque of the gearbox is much larger than that of traditional fuel vehicles, which makes it difficult to match the shifting clutch components

Fourth, traditional vehicles use mechanical brakes, and there is no requirement for energy recovery; however, electric vehicles need to maximize the recovery of braking energy as much as possible, which makes it difficult to control the braking and shifting of gearboxes

Fifth, electric vehicles have extremely high requirements on the transmission efficiency of automatic transmissions, which makes the structural design of automatic transmissions difficult

Sixth, it is difficult to deal with a series of problems such as high-frequency vibration, self-excited vibration, noise, impact, fatigue damage, and fretting wear caused by high-speed motors

Seventh, the equivalent axial width is small, that is, the automatic gearbox needs to be designed thinner to leave a better space for the axial size of the motor, resulting in a huge equivalent load of the tooth width and difficult design

However, there is no comprehensive solution to many common technical problems in the electric vehicle power transmission system. The existing power transmission system still has technologies such as large single motor power, high motor limit speed, low system operation efficiency, large volume and high maintenance cost. question

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