EV Charging Load Prioritization Across Station Groups
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Solution Overview
Problem
Existing charging station management systems lack a versatile solution for prioritizing charging transactions based on user groups, especially when multiple electric vehicles are being charged simultaneously, necessitating a more efficient load management to adhere to maximum current limits.
Innovation Solution
A cloud-based system that identifies users belonging to priority charging groups and prioritizes their charging transactions by allocating full power to priority users while sharing remaining power among non-priority users, using a processor and memory configured to manage charging station groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple electric vehicles are charged simultaneously at charging stations in a group, then the charging demand and user service capability are improved, but the maximum current limit of the charging station group is exceeded
Solution Approach 1:
The system performs preliminary identification of priority charging user groups before charging begins. By determining user group membership in advance and establishing priority relationships beforehand, the system can pre-allocate power distribution strategies that ensure current limits are not exceeded while still providing enhanced service to priority users.
Solution Approach 2:
The patent applies different quality levels of service to different user groups. Priority charging user groups receive preferential treatment in terms of power allocation and charging guarantees, while non-priority users receive standard service. This local differentiation allows the system to satisfy current limit requirements while providing enhanced service where needed.
2Reliability
If load management is applied to share maximum current limit among multiple electric vehicles, then current limit compliance is maintained, but charging power for individual vehicles is reduced
Solution Approach 1:
The system applies partial load management by providing full charging power to priority users without restriction, while applying power sharing only to non-priority users. This selective approach ensures that priority users receive excessive (full) power while the overall system maintains current limit compliance through managed distribution to other users.
Solution Approach 2:
The patent dynamically changes power allocation parameters based on user group identification. When a user is identified as belonging to a priority charging user group, their power allocation parameter is changed to receive full charging power. For non-priority users, power parameters are adjusted to share the remaining capacity, thus maintaining current limits while optimizing power distribution.
3Ease of operation
If priority charging stations are designated to provide higher charging power, then user satisfaction for priority users is improved, but fairness among charging stations in the group is reduced
Solution Approach 1:
The system implements a universal priority user group identification mechanism that can be applied across all charging stations in the group. The same identification criteria and priority allocation rules are universally applied, ensuring that fairness is maintained through consistent treatment of similar situations while still providing priority service to eligible users regardless of which specific charging station they use.
Data Source
AI summary
Various example embodiments relate to a solution for managing charging of electric vehicles. An apparatus may be configured to receive a charging transaction request associated with a user to charge an electric vehicle, the charging transaction request being associated with a charging station; determine that the user belongs to a priority charging user group, the priority charging user group being associated with a charging station group comprising a plurality of charging stations including the charging station; and prioritize the charging transaction relating to the charging station of the charging station group.