Vehicle Charging Power Selection Using Fee-Based Supply Limits
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Solution Overview
Problem
Existing vehicle charging systems face challenges in selecting appropriate maximum supply power from power feed facilities with variable fee structures, leading to potential imbalances in power grid demand and user convenience issues.
Innovation Solution
A vehicle system equipped with a controller that obtains a fee table, sets criteria for selecting maximum supply power based on user input or facility position, and notifies the power feed facility, allowing for optimized charging time and cost management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If maximum supply power of the power feed facility is increased to reduce charging time, then charging speed is improved, but power consumption in the power grid temporarily increases and balance between supply and demand is lost
Solution Approach 1:
The power feed facility is designed with variable maximum supply power that can be dynamically adjusted based on grid conditions. The controller receives fee information indicating different charge rates for different maximum supply power levels, and the facility adapts its power output accordingly, transitioning from static to dynamic operation to balance charging speed with grid stability.
Solution Approach 2:
The system changes the parameter of maximum supply power based on fee information from the power supplier. By receiving and processing fee data that reflects different charge rates for different power levels, the system adjusts operational parameters to optimize both charging efficiency and cost-effectiveness while maintaining grid balance.
2Stability of the object's composition
If a fee structure with higher charge fees for higher maximum supply power is adopted to manage power consumption, then power grid stability is improved, but user convenience deteriorates due to increased complexity in selecting appropriate maximum supply power
Solution Approach 1:
The vehicle's controller automatically performs the complex task of selecting appropriate maximum supply power based on received fee information. Instead of requiring users to manually analyze fee structures and make complex decisions, the system autonomously processes fee data and determines optimal charging parameters, making the service self-optimizing and user-friendly.
Solution Approach 2:
The system implements a feedback mechanism where the controller receives fee information from the power supplier indicating different charge rates for different maximum supply power levels. This feedback loop enables the system to continuously adjust charging parameters based on current pricing conditions, automatically balancing grid stability requirements with user needs without requiring manual intervention.
3Productivity
If the vehicle adapts to power feed with high electric power to reduce charging time, then charging efficiency is improved, but the vehicle may not be able to adapt due to specification or state limitations
Solution Approach 1:
The vehicle's charging system is designed with dynamic adaptability, allowing it to adjust its power acceptance capabilities based on real-time conditions. The controller can dynamically modify charging parameters according to the vehicle's current state (such as battery temperature, charge level, and component status) and communication with the power feed facility, enabling the system to optimize charging efficiency while maintaining reliability across varying operational conditions.
Data Source
AI summary
A controller that controls charging of a power storage in a vehicle includes an obtaining unit that obtains a fee table showing charge fee information for each of a plurality of maximum supply powers of a power feed facility outside the vehicle before start of charging of the power storage with the use of the power feed facility, a setting unit that sets a criterion for selection of maximum supply power of the power feed facility, a selector that selects one maximum supply power in the fee table in accordance with the criterion set by the setting unit, and a notification unit that notifies the power feed facility of the maximum supply power selected by the selector.