EV Charging Subscription Control Under Power Capacity Limits
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Solution Overview
Problem
The existing electric vehicle charging infrastructure faces limitations due to power capacity constraints, leading to inconvenience for users who must wait or seek alternative charging stations, and existing billing methods do not cater to frequent users' needs, necessitating a more flexible charging management system.
Innovation Solution
A subscription-based electric vehicle charging management system that utilizes a server to manage charging requests through a network, determining contract status and allowing or rejecting charging operations based on contract expiration or unpaid status, and enabling online payments to update contract situations and grant charging permissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the number of charging stations is increased to reduce waiting time, then user convenience is improved, but the power capacity constraints and construction costs are worsened
Solution Approach 1:
The system implements dynamic power allocation by adjusting the power output of charging stations in real-time based on subscription package priorities. VIP users with higher-tier subscriptions receive preferential power allocation and faster charging speeds, while standard users receive normal service. This dynamic adjustment allows the system to serve multiple users simultaneously with optimized power distribution, reducing overall waiting time without requiring additional power capacity infrastructure.
Solution Approach 2:
The system changes the parameter of power allocation by introducing subscription-based priority levels. Different subscription packages (VIP, standard, free) correspond to different power allocation parameters, charging speeds, and service priorities. This parameter transformation enables the existing power capacity to serve more users efficiently by differentiating service levels rather than providing uniform service to all users.
2Adaptability or versatility
If traditional per-charging billing is used, then revenue collection is simplified, but user flexibility and satisfaction for frequent users are worsened
Solution Approach 1:
The system implements preliminary action by requiring users to subscribe to charging packages in advance. Users select from predefined subscription packages (VIP, standard, free) that include predetermined charging credits, time limits, and power allocation priorities. This preliminary subscription setup simplifies the actual charging process, as users only need to authenticate their subscription status rather than undergoing complex per-charging billing calculations. The billing system complexity is managed through standardized package definitions rather than complex real-time billing algorithms.
3Productivity
If power capacity is expanded to serve more users, then charging availability is improved, but construction time and costs are worsened
Solution Approach 1:
The system ensures continuity of useful action by implementing intelligent power allocation that maintains charging operations during what would traditionally be construction or maintenance periods. By dynamically adjusting power distribution and allowing flexible subscription-based access, the system can continue serving users with optimized power utilization rather than requiring physical expansion of power capacity. This enables continuous charging service without interruption for infrastructure construction.
Data Source
AI summary
Subscription-based electric vehicle charging management methods and systems are provided. A server receives charging request with at least a user identification code from an electric vehicle charging station or a mobile device through a network. The server searches a database according to the user identification code to obtain contract situation corresponding to the user identification code and determines whether the contract situation is in a contract expiration status or an arrears unpaid status. When the contract situation is not in the contract expiration status or the arrears unpaid status, the server instructs the electric vehicle charging station to perform a charging operation. When the contract situation is in the contract expiration status or the arrears unpaid status, the server transmits a charging rejection instruction to the electric vehicle charging station. In response to the charging rejection instruction, the electric vehicle charging station rejects the charging request.