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

Implementation method for speed regulation of range extender of electric vehicle

A realization method and a technology of a range extender, applied in electric vehicles, engine-driven traction, electric traction, etc., can solve problems such as large fluctuations in generator torque and current output power, and achieve small fluctuations in torque, current and output power , The effect of meeting the power generation demand of the whole vehicle

Active Publication Date: 2013-03-20
CHERY AUTOMOBILE CO LTD
View PDF5 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the torque, current and output power of the generator in this speed regulation method fluctuate greatly

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
  • Implementation method for speed regulation of range extender of electric vehicle
  • Implementation method for speed regulation of range extender of electric vehicle
  • Implementation method for speed regulation of range extender of electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The specific implementation manner of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings.

[0022] like figure 1 As shown, a method for realizing speed regulation of an electric vehicle range extender, its range extender 1 includes an engine 2 and a generator 3, an engine controller 4 corresponding to the engine, and a generator controller 5 corresponding to the generator , the generator 3 and the driving motor 10 of the electric vehicle and the power battery 6 have a common DC bus, and the DC bus is also connected to the low-voltage battery pack 9 through the DCDC module 8; the engine controller 4 and the generator controller 5 are connected to the vehicle controller 12, wherein the engine controller 4 and the vehicle controller 12 are connected through the speed interface, the generator controller 5 and the vehicle controller 12 are connected through the torque interface; the power ...

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 discloses an implementation method for speed regulation of a range extender of an electric vehicle. The range extender comprises an engine, an electric generator, a corresponding engine controller and a corresponding electric generator controller, the electric generator, a driving motor and a motive power battery share a direct current bus, and the engine controller and the electric generator controller are both connected with a whole vehicle controller. When the range extender receives a power request sent by the whole vehicle controller, the whole vehicle controller sends corresponding request torque to the engine controller, the engine controller controls the engine to output the request torque, the request torque sent by the whole vehicle controller to the engine controller serves as feedforward, and the electric generator controller controls and regulates torque of the electric generator. The range extender is enabled to work at a target rotation speed, control of the speed regulation of the range extender is achieved, requirements for whole vehicle electric generation are met, the torque of the engine and the torque of the electric generator are coordinated and controlled to achieve response to the target rotation speed, and the torque, electric current and output power of the electric generator have small fluctuation.

Description

technical field [0001] The invention relates to the technical field of electric vehicle control, in particular to a method for realizing speed regulation of an electric vehicle range extender. Background technique [0002] With the progress of society, people's awareness of environmental protection has increased, and the "low-carbon, environmental protection, green" travel mode has gradually attracted great attention. The research on high-efficiency, environment-friendly and energy-saving electric vehicles has aroused great concern of the world's automobile manufacturers. [0003] Due to the defect of the energy density of the power battery of the traditional pure electric vehicle, the insufficient driving range has become an obstacle to the market promotion of the traditional pure electric vehicle. The range-extended electric vehicle adds a range extender composed of an engine and a generator to the traditional electric vehicle, which effectively makes up for the shortcomi...

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): B60L11/02B60L11/18B60L50/10
CPCY02T10/7077Y02T10/7005Y02T10/70Y02T10/7072
Inventor 肖小城刘小飞
Owner CHERY AUTOMOBILE CO LTD
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