EV Charging Schedule Updates Across Power Grid Borders
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Solution Overview
Problem
Current electric vehicle charging and discharging systems lack efficient and cost-effective management, particularly in vehicle-to-grid (V2G) systems, as they fail to dynamically adjust charging schedules based on regional fee rates and travel patterns, leading to suboptimal energy usage and increased costs.
Innovation Solution
A method that determines whether an electric vehicle has crossed a power grid border, updates the charging/discharging schedule based on new area codes and fee rates, and optimizes charging/discharging times to minimize fees, using a server to manage and coordinate charging operations through a navigation system and communication with charging stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the charging/discharging schedule is fixed without dynamic adjustment, then the system operation is simple, but the charging cost increases and energy usage efficiency decreases
Solution Approach 1:
The charging/discharging schedule is made dynamic by automatically detecting power grid border crossings and retrieving updated fee rate policies from a server. The system adjusts charging parameters in real-time based on current location and regional pricing, transforming a static schedule into an adaptive one that responds to changing environmental conditions.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring the vehicle's location, detecting border crossings, retrieving updated fee rate information from external servers, and using this information to adjust the charging schedule. This closed-loop control enables the system to adapt to changing conditions while maintaining operational simplicity through automation.
2Loss of energy
If the charging schedule is optimized based on regional fee rates, then the charging cost decreases, but the system complexity increases
Solution Approach 1:
An external server acts as an intermediary that stores and provides fee rate policy information for different power grid regions. Instead of embedding complex pricing databases and optimization algorithms in the vehicle's control system, the system queries the external server for current fee rates and receives optimized charging recommendations, thereby reducing on-vehicle system complexity while still achieving cost optimization.
Solution Approach 2:
The system performs preliminary actions by detecting border crossings in advance and retrieving fee rate information before charging operations begin. This allows the charging schedule to be optimized based on known future conditions, reducing charging costs without requiring complex real-time decision-making during the actual charging process.
3Productivity
If border crossing detection and schedule updates are implemented, then charging efficiency improves, but the measurement and control difficulty increases
Solution Approach 1:
The system utilizes the existing navigation system's location detection functionality for a dual purpose: both providing navigation services and detecting power grid border crossings. By making the location detection system multi-functional, the patent avoids adding separate complex detection hardware while still achieving border crossing detection capability.
Solution Approach 2:
The server acts as an intermediary that handles the complexity of border detection logic and fee rate policy management. The vehicle's control system simply queries the server with current location information and receives updated charging parameters, thereby reducing the measurement and control difficulty on the vehicle side while maintaining high charging efficiency.
Data Source
AI summary
Disclosed is a method for charging/discharging an electric vehicle. The method includes determining whether the electric vehicle has passed a power grid border during travel, transmitting information on a current travel path and information on a currently set area code to a server in response to a determination that the electric vehicle has passed the power grid border, receiving an area code update request message containing information on a new area code and a charging/discharging fee rate policy corresponding to the new area code from the server, updating a charging/discharging schedule based on the charging/discharging fee rate policy corresponding to the new area code, and performing the charging/discharging with a charging station based on the updated charging/discharging schedule.