EV Charging Prioritization via Digital Certificate
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Solution Overview
Problem
Current charging systems for electric vehicles cannot prioritize charging based on individual vehicle needs, leading to increased charging times when multiple vehicles are charged simultaneously, as the available capacity is distributed evenly among them, regardless of their specific requirements.
Innovation Solution
A digital certificate, or marker, is introduced to motor vehicles, which adjusts and prioritizes the charging capacity independently of the number of vehicles at the charging station, allowing for predetermined charging times by determining and transmitting the charging authorization to the charging management device, ensuring priority charging even during congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If charging capacity is distributed evenly among multiple vehicles at a charging station, then fairness is maintained, but charging time increases for all vehicles
Solution Approach 1:
The patent applies local quality by assigning different charging capacities to different vehicles based on their individual needs and priorities. Instead of uniform distribution, the system evaluates each vehicle's state of charge, battery capacity, and user requirements to allocate charging power differentially, allowing prioritized vehicles to receive higher capacity while others receive appropriate levels.
Solution Approach 2:
The system dynamically changes charging parameters (power output, current, voltage) based on vehicle identification and priority level. The charging station adjusts these parameters in real-time according to the vehicle's battery state, urgency of charging need, and available capacity, thereby optimizing charging time without compromising overall system fairness.
2Productivity
If charging capacity is reduced to accommodate multiple vehicles, then all vehicles can be served, but charging speed decreases for each vehicle
Solution Approach 1:
The patent implements dynamic charging capacity allocation where the charging station continuously monitors vehicle arrivals, battery states, and priority levels. The system dynamically adjusts charging speed and capacity assignment in real-time, allowing high-priority vehicles to receive maximum charging speed while lower-priority vehicles receive appropriate capacity, thereby maintaining overall productivity without sacrificing individual charging performance.
3Adaptability or versatility
If a prioritization system is implemented at the charging pole level, then individual vehicle needs can be met, but system complexity increases
Solution Approach 1:
The patent introduces an intermediary evaluation unit that mediates between vehicles and charging poles. This intermediary component centralizes the prioritization logic, vehicle identification, and capacity allocation decisions, thereby reducing complexity at individual charging poles. The evaluation unit processes vehicle data, determines priority levels, and coordinates charging capacity distribution across multiple poles, simplifying the overall system architecture while maintaining adaptability.
4Productivity
If charging capacity is shared among many vehicles, then utilization of charging infrastructure is maximized, but charging time increases for prioritized vehicles
Solution Approach 1:
The patent applies preliminary action by pre-establishing priority levels and charging capacity allocations before vehicles begin charging. The evaluation unit assesses vehicle needs and assigns priority statuses in advance, allowing prioritized vehicles to immediately receive higher charging capacity upon connection. This preliminary evaluation and allocation mechanism ensures that prioritized vehicles maintain short charging times while the system continues to maximize overall infrastructure utilization through efficient capacity management.
Data Source
AI summary
A method for controlling a charging operation of an energy storage device of a motor vehicle. A control device carries out the following: establishment of a prioritization of a motor vehicle for user-specific recharging of the energy storage device on the basis of the established prioritization; determination of a charging capacity predetermined by the prioritization for a recharging operation, depending on the determined charging capacity; creation of a digital certificate, which describes the determined charging capacity; and transmission of the created certificate to a charging management device of the motor vehicle. Depending on the charging capacity described by the certificate transmitted to the charging management device of the motor vehicle: generation of a control signal, which describes a course of the charging operation with the described charging capacity; and transmission of the created control signal to an energy delivery device of a charging station apparatus. Optionally, the charging capacity can be reduced by the certificate in the motor vehicle.