EV Route Proposal Using Ground Charging Energy Projection
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Solution Overview
Problem
Existing systems for powering electric vehicles through noncontact ground power supply apparatuses may not provide sufficient power for vehicles to reach their destinations, especially if the power supply sections are too short.
Innovation Solution
A running mode proposal device that selects a first running route based on a predetermined algorithm and projects the electric energy supplied by ground power supply apparatuses along this route. If the projected energy is less than a standard energy requirement, the device selects a second route with longer power supply sections to ensure sufficient energy is received.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the transmitted power at ground power supply apparatuses is increased to the limit, then the power supply capability is improved, but the power supply section length must be sufficiently long to provide adequate total energy
Solution Approach 1:
The system dynamically adjusts the vehicle's running speed within a control section to optimize power reception. By controlling the vehicle to run at a speed that maintains resonance frequency alignment between ground and vehicle power supply apparatuses, the system maximizes power transfer efficiency without requiring increased transmitted power or longer power supply sections.
Solution Approach 2:
The system changes the operational parameters by controlling vehicle speed to match resonance frequencies. This parameter adjustment enables efficient power transfer at existing power levels and section lengths, resolving the contradiction between power magnitude and section length requirements.
2Loss of time
If a route is selected based on shortest distance or fastest time, then travel efficiency is improved, but the power supply section length may be insufficient for the vehicle to reach destination
Solution Approach 1:
The system performs preliminary calculation of power supply adequacy before route selection. By projecting whether sufficient power can be supplied along candidate routes and determining necessary control sections in advance, the system selects routes that guarantee power sufficiency while maintaining travel efficiency, rather than discovering power deficiencies after route selection.
Solution Approach 2:
The system introduces an intermediary evaluation process that assesses power supply conditions between the route selection and actual travel. This intermediary calculation determines whether candidate routes have adequate power supply sections, acting as a mediator that ensures both travel efficiency and power reliability are satisfied.
3Speed
If the vehicle running speed is increased, then travel time is reduced, but the power reception efficiency from ground power supply apparatuses decreases
Solution Approach 1:
The system dynamically controls vehicle speed to maintain resonance frequency alignment with ground power supply apparatuses. By adjusting speed within a control section to match the resonance frequency of the power transfer system, the vehicle maximizes power reception efficiency while still progressing toward the destination, rather than maintaining constant high speed.
4Power
If the transmitted power is maximized, then immediate power supply capability is improved, but the total energy available for long-distance travel remains insufficient
Solution Approach 1:
The system performs preliminary projection calculations to determine whether maximizing transmitted power will provide sufficient total energy for the entire journey. By evaluating power supply adequacy before travel and identifying control sections where speed adjustment can enhance power reception, the system ensures both maximum power utilization and sufficient total energy accumulation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed solution ensures that electric vehicles can receive the necessary power from ground power supply apparatuses, enabling them to reach their destinations without running out of charge.
Implementation Method 1
power is supplied by noncontact from a ground power supply apparatus on the running route to the vehicle
Data Source
AI summary
A running mode proposal device for proposing a running mode up to a destination of a vehicle is configured to: select a first running route by a predetermined algorithm unrelated to noncontact power supply; project, when assuming the vehicle runs on a predetermined running route, a value of a parameter relating to an electric energy projected as being supplied at a power supply section on the running route to the vehicle; select a second running route by which a projected supplied electric energy will be greater than a predetermined standard electric energy if the projected value of the parameter when assuming the vehicle runs on the first running route is a value indicating the projected supplied electric energy is less than the standard electric energy; and propose, as the running route, the first running route, and, when the second running route is selected, further proposing a second running route.