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

Automobile four-wheel drive control method and device

A control method and four-wheel drive technology, applied in control devices, electric vehicles, control drives, etc., can solve the problems of not fully utilizing the efficiency of the electric drive system, and achieve the effect of improving the economy of the vehicle

Pending Publication Date: 2022-01-28
重庆赛力斯新能源汽车设计院有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most current electric vehicles are driven by dual motors, and a fixed distribution ratio is used for torque distribution, which fails to give full play to the efficiency of the electric drive system

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
  • Automobile four-wheel drive control method and device
  • Automobile four-wheel drive control method and device
  • Automobile four-wheel drive control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, other embodiments obtained by those skilled in the art all belong to the protection scope of the present invention.

[0025] Traditional four-wheel drive vehicles rely on the central transfer case to distribute torque according to a fixed ratio. However, most current electric vehicles are driven by dual motors. If the torque distribution is still performed with a fixed distribution ratio, the efficiency of the electric drive system cannot be fully utilized. .

[0026] see figure 1 , figure 1 It is a fl...

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 embodiment of the invention provides an automobile four-wheel drive control method and device. The automobile four-wheel drive control method comprises the steps of acquiring torque information of an electric drive system and rotating speed information of the electric drive system in real time; calculating the power P of the electric drive system in real time according to the torque information of the electric drive system and the rotating speed information of the electric drive system; predicting expected power P1 of the electric drive system in a future preset time period according to the torque information of the electric drive system and the rotating speed information of the electric drive system obtained in real time; obtaining the most economic distribution ratio of the torque according to the power P of the electric drive system; and according to the expected power P1 of the electric drive system and the most economical distribution ratio of the torque, obtaining a torque value expected to be distributed to the drive system, and distributing the obtained torque value to the drive system in advance. According to the invention, the most economic distribution ratio is calculated in real time, an asynchronous electric drive assembly is shut down at the proper time, it is guaranteed that the electric drive system works in the optimal economic interval under the condition that the requirements of a driver are met, and the economical efficiency of the whole vehicle is improved.

Description

【Technical field】 [0001] The present application relates to the field of electric vehicles, in particular to a method and device for controlling four-wheel drive of vehicles. 【Background technique】 [0002] With the improvement of our country's living standards, cars are the most important means of transportation in people's daily life. In the context of increasingly severe energy and environmental issues, automobiles, as one of the important sources of pollution, need to be more energy-efficient. [0003] However, most current electric vehicles are driven by dual motors, and a fixed distribution ratio is used for torque distribution, which fails to give full play to the efficiency of the electric drive system. [0004] Therefore, how to make the electric drive system work in the optimal economic range and improve the vehicle economy of the vehicle while meeting the needs of the driver is an important problem that needs to be solved urgently. 【Content of invention】 [00...

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 Applications(China)
IPC IPC(8): B60L15/20B60L15/38
CPCB60L15/2045B60L15/38B60L2240/423B60L2260/44Y02T10/72
Inventor 滕国刚刘杰黄大飞谢晶晶刘晓东杨静
Owner 重庆赛力斯新能源汽车设计院有限公司
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