Charging Controller for Time-Based Pricing Under Power Limits
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Solution Overview
Problem
Existing charging controllers do not effectively manage charging power restrictions and pricing variations at public power feed facilities, leading to inefficient charging and potentially high fees.
Innovation Solution
A charging controller that dynamically adjusts the charging quitting condition based on pricing models and charging power restrictions, specifically moving the end of charging ahead when using time-based pricing with severe charging power restrictions to minimize fees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If charging power is restricted to protect the power storage and peripheral components, then reliability is improved, but charging speed deteriorates
Solution Approach 1:
The charging controller dynamically adjusts the charging quitting condition based on real-time monitoring of charging power restriction levels and pricing information. When severe restriction is detected, the controller moves the end of charging ahead by adjusting the voltage threshold, creating a dynamic adaptation to changing conditions rather than using a fixed charging protocol
Solution Approach 2:
The controller changes the charging quitting condition parameter (voltage threshold) based on the severity of charging power restriction and pricing model. By modifying this critical parameter, the system optimizes charging behavior to balance protection requirements with cost efficiency under different operational constraints
2Reliability
If charging proceeds slowly due to severe charging power restriction, then reliability is improved, but charging time increases leading to higher fees under time-based pricing
Solution Approach 1:
The controller obtains pricing information in advance and determines the pricing model before executing charging. Based on this preliminary knowledge combined with expected charging power restriction levels, the controller pre-adjusts the charging quitting condition to move the end of charging ahead, preventing excessive charging time and fee accumulation before they occur
Solution Approach 2:
The system continuously monitors charging power restriction levels and compares them against thresholds during the charging process. Based on this feedback, the controller dynamically adjusts the charging quitting condition to optimize the balance between completing charging and minimizing time-based pricing fees
Data Source
AI summary
A charging controller is configured to carry out charging of a power storage with charging power to be restricted and to quit charging when a charging quitting condition is satisfied while charging is carried out. The charging controller is configured to change the charging quitting condition to move end of charging ahead in charging of the power storage by using a power feed facility when pricing of the power feed facility falls under time-based pricing and restriction of charging power is severer than a prescribed level, the time-based pricing being pricing that a fee is charged based on a charging time period.