System and method of assisting driver in driving electric vehicle in more environmentally efficient manner

Patent metadata

Field	Value
Publication number	US-9114727-B2
Application number	US-201213587122-A
Country	US
Kind code	B2
Filing date	Aug 16, 2012
Priority date	Dec 9, 2011
Publication date	Aug 25, 2015
Grant date	Aug 25, 2015

Abstract

A system and a method of assisting a driver in driving an electric vehicle in a more environmentally efficient manner are disclosed. In particular, an information collecting section collects information operating the electric vehicle and a control logic section generates control logic and models related to route calculation to a destination and operation of the electric vehicle based on the collected information. A route setting section calculates a plurality of travel routes based on the control logic and the model related to the route calculation and sets an optimum travel route having the highest energy efficiency among the plurality of travel routes. A vehicle driving controller monitors the vehicle state and controls driving of the electric vehicle based on the control logic and the model related to the driving of the electric vehicle when the electric vehicle travels along the optimum travel route set by the route setting section.

First claim

What is claimed is:

1. A method of assisting a driver in driving an electric vehicle in an environmentally efficient manner, comprising:
calculating, by a control unit, a plurality of travel routes to a destination;
requesting from the driver by the control unit, a degree of familiarity with the travel routes of each of the plurality of travel route information calculated by the control unit;
supplementing, by the control unit, 3-dimensional geographic information based on the driver's particular degree of familiarity and collecting vehicle state information;
calculating, by the control unit, a primary road process according to states of the driver and the electric vehicle and a primary driving schedule corresponding to the primary road process based on the vehicle state information and the geographic information;
calculating, by the control unit, a secondary road process and a secondary driving schedule corresponding to the secondary road process by reflecting real-time circumstantial information including driver information, real-time weather information and real-time traffic information on the primary road process;
selecting an optimum travel route having the highest energy efficiency among the plurality of travel routes according to the secondary driving schedule; and
monitoring a state of the electric vehicle travelling along the optimum travel route according to the secondary driving schedule and controlling driving of the electric vehicle,
wherein controlling the driving of the electric vehicle comprises:
controlling torque efficiency of a motor and an inverter in the electric vehicle travelling along the optimum travel route;
controlling a speed of the electric vehicle to be less than a speed limit when the torque efficiency is greater than or equal to a predetermined reference efficiency; and
converting a mode into gliding mode on a road where non-powered driving is possible among the optimum travel route and controlling the driving of the electric vehicle.

2. The method of claim 1 , wherein a vehicle speed is maintained to be within a predetermined speed range by repeating pulse motoring and turning off motoring and regeneration at the controlling the driving of the electric vehicle while in the gliding mode.

3. The method of claim 1 , wherein the plurality of travel route information provided to the driver is information on road segments divided into a predetermined distance.

4. A non-transitory computer readable medium containing program instructions executed by a processor or controller, the computer readable medium comprising:
program instructions that calculate a plurality of travel routes to a destination;
program instructions that calculate request from the driver a degree of familiarity with the travel routes of each of the plurality of travel route information calculated by the control unit;
program instructions that supplement geographic information based on the driver's particular degree of familiarity and collecting vehicle state information;
program instructions that calculate a primary road process according to states of the driver and the electric vehicle and a primary driving schedule corresponding to the primary road process based on the vehicle state information and the geographic information;
program instructions that calculate a secondary road process and a secondary driving schedule corresponding to the secondary road process by reflecting real-time circumstantial information including driver information, real-time weather information and real-time traffic information on the primary road process;
program instructions that select an optimum travel route having the highest energy efficiency among the plurality of travel routes according to the secondary driving schedule; and
program instructions that monitor a state of the electric vehicle travelling along the optimum travel route according to the secondary driving schedule and controlling driving of the electric vehicle,
wherein the program instructions that control the driving of the electric vehicle comprise:
program instructions that control torque efficiency of a motor and an inverter in the electric vehicle travelling along the optimum travel route;
program instructions that control a speed of the electric vehicle to be less than a speed limit when the torque efficiency is greater than or equal to a predetermined reference efficiency; and
program instructions that convert a mode into a gliding mode on a road where non-powered driving is possible among the optimum travel route and control the driving of the electric vehicle.

5. The non-transitory computer readable medium of claim 4 , wherein a vehicle speed is maintained to be within a predetermined speed range by repeating pulse motoring and turning off motoring and regeneration at the controlling the driving of the electric vehicle while in the gliding mode.

6. The non-transitory computer readable medium of claim 4 , wherein the plurality of travel route information provided to the driver is information on road segments divided into a predetermined distance.

Assignees

• Choi Seunggil
• Lee Jeong Woo
• Kee Jung Do
• Yang Chae Mo
• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Choi Seunggil
• Lee Jeong Woo
• Kee Jung Do
• Yang Chae Mo

Classifications

• B60L2240/60

  Navigation input · CPC title

• Y02T10/7283

  Cross-Sectional Technologies · mapped topic

• B60L15/2045 Primary

  for optimising the use of energy · CPC title

• Y02T10/7291

  Cross-Sectional Technologies · mapped topic

• Y02T90/161

  Cross-Sectional Technologies · mapped topic