Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Non-clutch shift control method and control system of pure electric vehicle

A shift control, pure electric technology, applied in the direction of electric vehicles, vehicle components, electric traction, etc., can solve the problems such as deceleration and shifting, the impact of vehicle maneuverability, etc., and achieve the effect of improving maneuverability

Inactive Publication Date: 2008-12-17
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF0 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It can be seen that the existing technology cannot realize the shifting of electric vehicles without deceleration, which will have a great impact on the handling performance of the vehicle

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-clutch shift control method and control system of pure electric vehicle
  • Non-clutch shift control method and control system of pure electric vehicle
  • Non-clutch shift control method and control system of pure electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] During the driving process of the pure electric vehicle, the power output of the drive motor is directly connected to the drive axle through the multi-speed reducer without passing through the clutch, so as to realize clutchless gear shifting. The driver controls the driving speed of the vehicle completely through the accelerator, while the shifting process in the gearbox is completely automatically completed under the relevant control devices of the vehicle.

[0017] During the working process of the electric vehicle, the electric energy of the battery is converted into AC current, and the motor controller will generate corresponding current according to the power required by the vehicle. The torque of the motor is decelerated and increased through the gearbox. According to the needs of the road, the automatic transmission system (AMT) controller generates corresponding control commands to select different gears. The gearbox torque is transmitted to the rear axle final ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a shift controlling method for a purely electric vehicle, and the method includes: a. the position of an accelerator pedal and the speed are detected; b. when the position of the accelerator pedal and the speed arrive at a shifting point, the rotate speed of a drive motor is regulated to an expected rotate speed and the position is selected while regulating the speed; c. after reaching the expected rotate speed, shift is carried out. The invention also provides a shift controlling system for a purely electric vehicle, and the system comprises: a pedal position detecting unit, a central controlling unit, a motor speed regulating unit, a position selecting device and a shifting device. The shift controlling method and system for purely electric vehicles can shift under the condition that the speed is not reduced, thus greatly improving the maneuverability of the vehicles and fully playing the efficiency of the electric motor.

Description

technical field [0001] The invention relates to the field of electric vehicle control, in particular to a clutchless shift control method and control system for pure electric vehicles. Background technique [0002] In the prior art, pure electric vehicles mostly use a second-speed mechanical transmission. Without a clutch, the shifting operation of the mechanical transmission needs to be completed when the vehicle speed is low. The speed of the shaft is reduced to reduce the speed of the vehicle, and then operations such as gear removal and speed change are performed. [0003] It can be seen that the prior art cannot realize gear shifting without deceleration while the electric vehicle is running, which will have a great impact on the maneuverability of the vehicle. Contents of the invention [0004] Aiming at the defects of the prior art, the present invention proposes a shift control method and control system, which can realize the shift operation without reducing the v...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B60W10/08B60W10/10B60L11/00B60W10/11
Inventor 席军强熊光明陈慧岩
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com