EV Charging Rate Control for Grid Load Balancing
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Solution Overview
Problem
The increasing number of electric vehicles poses challenges in managing power consumption and distribution efficiently, particularly in terms of balancing load and maximizing the utilization of existing charging infrastructure.
Innovation Solution
A charging management system that dynamically adjusts the charging rate of electric vehicle charging stations based on real-time demand and power availability, utilizing a server to communicate with charging stations and mobile devices to optimize charging operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of electric vehicle charging stations is increased in a charging field, then the charging capacity and service ability are improved, but the power consumption and load on the charging field exceed the maximum load capacity
Solution Approach 1:
The patent implements dynamic adjustment of charging rates based on real-time power availability and demand conditions. The charging rate is not fixed but varies according to the current state of the charging field, allowing the system to adapt to changing power conditions and maximize utilization without exceeding capacity limits.
Solution Approach 2:
The system changes the charging rate parameter dynamically based on power conditions. By adjusting this key parameter, the system can accommodate more charging stations and vehicles while maintaining power balance, effectively resolving the contradiction between charging capacity and power consumption.
2Quantity of substance
If the power output of individual electric vehicle charging stations is reduced to implement load balancing, then more electric vehicles can be charged simultaneously, but the charging time for each vehicle increases
Solution Approach 1:
The system dynamically adjusts the power output of charging stations based on real-time conditions rather than using a fixed reduced power level. This allows the system to optimize the balance between number of vehicles served and charging speed according to actual power availability and demand patterns.
Solution Approach 2:
The patent employs feedback mechanisms where the server continuously monitors power consumption, charging status, and demand conditions, then adjusts charging rates accordingly. This closed-loop control enables the system to respond to changing conditions and optimize the trade-off between serving more vehicles and maintaining acceptable charging times.
3Productivity
If the charging rate is set according to fixed conditions such as location or peak/off-peak periods, then the utilization rate of charging stations can be increased, but the system lacks flexibility to respond to real-time power availability and demand changes
Solution Approach 1:
The system transitions from static, condition-based charging rates to dynamic, real-time charging rate adjustment. The charging rate continuously adapts to current power availability and demand conditions, providing both high utilization and flexibility simultaneously.
Solution Approach 2:
The patent implements a feedback-based control system that monitors real-time conditions including power availability, charging status, and demand patterns. This enables the system to automatically adjust charging rates to optimize utilization while maintaining flexibility to respond to changing conditions.
Data Source
AI summary
Electric vehicle charging management methods and systems with charging rate-based charging are provided. First, the server provides a charging rate corresponding to a charging field, wherein the charging rate is variable. A first specific electric vehicle charging station receives a connection corresponding to a first electric vehicle. The server transmits the charging rate of the charging field to a first mobile device via a second network, and receives a setting of a first specific rate from the first mobile device. When the charging rate is equal to or less than the first specific rate, the server transmits a charging start instruction to the first specific electric vehicle charging station via a first network, so that the first specific electric vehicle charging station starts to perform a charging operation to charge the first electric vehicle.