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

Pure electric vehicle shift control system based on clutchless two-speed automatic transmission

An automatic transmission and pure electric vehicle technology, applied in electric vehicles, control drives, control devices, etc., can solve problems such as rapid wear of synchronizers, long power interruption time, and complexity, and achieve fast speed response, ensure shift quality and The effect of shift success rate

Active Publication Date: 2019-07-05
TONGJI UNIV +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the control of the vehicle drive motor and the shift actuator motor during the shifting process is very important and complicated, which can easily lead to problems such as rapid wear of the synchronizer, long power interruption time, and large shifting impact.

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
  • Pure electric vehicle shift control system based on clutchless two-speed automatic transmission
  • Pure electric vehicle shift control system based on clutchless two-speed automatic transmission
  • Pure electric vehicle shift control system based on clutchless two-speed automatic transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] Such as figure 1 As shown in the patent of the present invention, a pure electric vehicle shift control method and system using a clutchless two-speed automatic transmission, the shift control system is a distributed control system, mainly including: vehicle controller VCU01, battery management system BMS02, motor control unit MCU03, transmission control unit TCU04, power battery 05, driving motor 06, two-speed transmission 07 and other components.

[0046] Such as figure 2 As shown, the control system of the transmission shift actuator mainly includes a transmission control unit TCU04 , an actuator motor 11 , a reduction mechanism 12 , a motion conversion mechanism 13 , a shift fork 14 and a synchronizer 15 .

[0047] Such as image 3 As shown, the first stage of the gear shifting process is the torque control of the drive motor 0...

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 relates to a pure electric car gear shifting control system based on a two-gear automatic transmission without a clutch. The pure electric car gear shifting control system comprises a vehicle control unit (VCU), a battery management system (BMS), a motor control unit (MCU), a transmission control unit (TCU), a power storage battery, a driving motor, the two-gear automatic transmission, a main reducer, a differential mechanism and wheels. The VCU decides whether a gear is shifted or not according to the current operating condition of a car, the BMS controls and detects the power storage battery, the MCU controls the driving motor, the TCU controls a gear shifting executing motor of the two-gear automatic transmission, and the driving motor finally acts on the wheels sequentially through the two-gear automatic transmission, the main reducer and the differential mechanism to drive the car. Compared with the prior art, according to the pure electric car gear shifting control system based on the two-gear automatic transmission without the clutch, by coordination control of the driving motor and a gear shifting executing mechanism of the two-gear automatic transmission, the advantage of rapid, smooth and steady gear shifting is achieved.

Description

technical field [0001] The invention relates to the technical field of automatic shift control of pure electric vehicles, in particular to a pure electric vehicle shift control system based on a clutchless two-speed automatic transmission. Background technique [0002] With the gradual depletion of fossil energy and the increasingly prominent environmental problems, pure electric vehicles have become one of the important development directions of new energy vehicles due to their advantages of zero emission, low noise and extensive sources of electric energy. [0003] The pure electric vehicle uses the drive motor as the power source. Because the drive motor has the characteristics of zero-speed start, low-speed high torque, high-speed constant power, and wide operating range, the pure electric vehicle can theoretically not use a transmission, but in fact it is Taking into account its power indicators (maximum vehicle speed and maximum gradient) and improving its energy econo...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L15/2054B60L2240/12B60L2240/423B60L2240/48B60L2250/26Y02T10/72
Inventor 赵治国吴朝春陆季波丁华杰徐大陆陈川川李学彦李航宇
Owner TONGJI UNIV
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