Wireless EV Charging Control for User-Conditioned Power Reception
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Solution Overview
Problem
Electric vehicles equipped with wireless power reception units face the issue of unconditionally receiving power from road facilities, leading to compromised user convenience due to disagreements in power feeding fees or unit prices, which can result in inefficient power usage and battery deterioration.
Innovation Solution
A control device and method that utilize a processor to suppress on-road power reception when user-desired conditions, such as fee, battery state, or CO2 emission levels, are not met, even if the physical conditions for power feeding are satisfied, allowing users to control power reception based on their preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If wireless power feeding is unconditionally performed when physical conditions are satisfied, then power reception can be automatically achieved, but user convenience is compromised due to forced power reception regardless of user preferences or fee conditions
Solution Approach 1:
The power reception system transitions from a static unconditional reception mode to a dynamic conditional reception mode. The control device dynamically adjusts power reception behavior based on real-time evaluation of multiple conditions including user preferences, battery state, fee conditions, and power supply status, allowing the system to adapt its operation to varying circumstances rather than following a fixed automatic reception protocol
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring and evaluating multiple conditions (user preference information, battery charge state, fee conditions, power supply conditions) before executing power reception. This feedback loop ensures that power reception decisions are based on current system state and user preferences rather than unconditional automatic activation, resolving the contradiction between automation and user convenience
2Ease of operation
If power reception is suppressed when user-desired conditions are not satisfied, then user convenience is maintained, but power reception opportunities are lost when conditions are favorable
Solution Approach 1:
The system changes the operational parameters of power reception based on multiple conditional factors. Instead of a binary on/off approach, the control device adjusts power reception parameters (whether to receive power, amount of power to receive) based on user preferences, battery state, fee conditions, and power supply conditions, optimizing power reception efficiency while respecting user convenience requirements
3Adaptability or versatility
If multiple conditions are evaluated before power reception, then user preferences and optimal conditions are respected, but system complexity increases
Solution Approach 1:
The control device serves multiple functions within a single integrated system. It simultaneously manages user preference storage, condition evaluation (multiple types of conditions), power reception control, and communication with external devices. This multi-functionality approach consolidates what could be separate complex subsystems into a single universal control unit, reducing overall system complexity while maintaining adaptability
Data Source
AI summary
An ECU controls a vehicle including a power reception unit that can wirelessly receive electric power from a power feeding facility placed on a travel road. The ECU includes a memory in which a user-desired condition is stored, the user-desired condition being a condition under which a user of the vehicle desires on-road power reception, the on-road power reception being power reception from the power feeding facility placed on the travel road, and a processor connected to the memory. When a physical condition for power feeding from the power feeding facility to the vehicle is satisfied and when the user-desired condition stored in the memory is not satisfied, the processor controls the power reception unit to suppress on-road power reception.