Speed control system for drive axle

A technology for drive axles and drive motors, applied in vehicle gearboxes, power units, transmissions, etc., can solve problems affecting vehicle NVH, achieve the effects of avoiding NVH, achieving amplification, and reducing the maximum speed

Inactive Publication Date: 2018-08-03
CH AUTO TECH CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a drive axle transmission system, which aims to solve the problem that the high-speed operation of the motor in the existing electric vehicle affects the NVH of the vehicle

Method used

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  • Speed control system for drive axle
  • Speed control system for drive axle
  • Speed control system for drive axle

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Embodiment Construction

[0023] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] see figure 1 , which is a structural schematic diagram of the drive axle transmission system provided by the embodiment of the present invention. The ...

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PUM

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Abstract

The invention provides a speed control system for a drive axle. The system comprises a driving motor, a planetary gear train and an executing mechanism, wherein the input shaft of the planetary gear train is connected to the output shaft of the driving motor and the executing mechanism is arranged on the planetary gear train for separating or uniting different components of the planetary gear train. By controlling separation or union of the different components of the planetary gear train by means of the executing mechanism, that is, control of locking, the relative movement relationship of different components of the planetary gear train is changed to obtain different transmission ratios, so that the rotating speed of the motor is adjusted at different transmission ratios to adjust the vehicle speed; the system operates at a relatively great transmission ratio during starting or low speed operation, so that the drive force is amplified hugely and the demand on motor power and torque are reduced; the system operates at a relatively small transmission ratio during high speed operation, so that the demand on the highest rotating speed of the motor is met, the problems of NVH, sealingproperty and durability caused by high speed operation of the motor are avoided, and the demand on the highest vehicle speed and power of the vehicle is met.

Description

technical field [0001] The invention relates to the field of drive technology, in particular to a drive axle transmission system. Background technique [0002] The drive system of new energy vehicles generally consists of an electric drive axle composed of a motor and a reducer. The motor converts electrical energy into mechanical energy to provide power for the vehicle, and then reduces the speed of the motor through the reducer, and at the same time amplifies the output torque of the motor to achieve the effect of deceleration and torque increase, so that the vehicle can run within a certain speed range and under a certain driving force . At present, the electric drive system in new energy vehicles is generally composed of a motor and a reducer with a fixed gear ratio. In order to meet the maximum speed of the vehicle, the motor speed needs to be adjusted within a wide range. The high-power motor is matched with the whole vehicle. [0003] However, the existing automobi...

Claims

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Application Information

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IPC IPC(8): F16H3/44F16H37/08B60K1/00B60K17/04B60K17/16
CPCB60K1/00B60K17/046B60K17/165B60K2001/001F16H3/44F16H37/08F16H2702/02
Inventor 陆群陈峥光
Owner CH AUTO TECH CORP CO LTD
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