EVSE Charging Profiles for Communication Loss Resource Allocation
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Solution Overview
Problem
The challenge of efficiently and fairly allocating charging resources across electric vehicle supply equipment (EVSEs) is exacerbated by broken communication connections between EVSEs and central control systems, leading to inefficiencies and potential system failures.
Innovation Solution
Implementing default charging profiles that allow EVSEs to continue providing charging resources when communication with the central control system is disrupted, ensuring fair allocation and preventing system overload by defining maximum resource usage based on predefined profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a central control system is used to allocate charging resources across EVSEs, then resource allocation efficiency and fairness are improved, but system reliability deteriorates when communication connections break
Solution Approach 1:
The patent applies preliminary action by pre-configuring default charging profiles in each EVSE's local memory before communication failures occur. These profiles contain predetermined charging parameters and resource allocation rules that automatically take effect when the central control system becomes unreachable, ensuring continuous operation without interruption to charging services.
Solution Approach 2:
The patent introduces an intermediary layer between the central control system and EVSE operation by implementing local control logic within each EVSE. This local controller acts as an intermediary that can independently execute charging operations using stored default profiles when communication with the central system is lost, thereby maintaining system reliability while preserving centralized control during normal operation.
2Ease of operation
If communication connection between EVSE and central control system is maintained, then centralized control and monitoring are improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the charging control system into independent modular units where each EVSE possesses autonomous control capabilities through local memory storage of charging profiles. This segmentation reduces communication dependencies and system complexity while maintaining centralized management functionality, as each module can operate independently when needed.
3Reliability
If EVSE shuts down completely when communication is lost, then safety is improved, but charging service availability deteriorates
Solution Approach 1:
The patent implements self-service by enabling EVSEs to autonomously execute charging operations using locally stored default profiles when communication with the central control system is lost. Each EVSE serves itself by independently determining charging parameters, managing power delivery, and maintaining safe operation without external control, thereby preserving service availability while ensuring safety through pre-configured operational limits.
Data Source
AI summary
A method for providing charging resources to one or more electric vehicles is disclosed. The method comprises a control system of an electric vehicle supply equipment, EVSE, storing a default charging profile. The default charging profile defines a first maximum amount of charging resources that the EVSE may provide to one or more electric vehicles charging with the EVSE. The method also comprises the control system of the EVSE receiving from a central control system, via a communication connection between the control system and the central control system, a charging profile. The charging profile defines a second maximum amount of charging resources that the EVSE may provide to one or more electric vehicles charging with the EVSE. The method also comprises the control system effectuating the received charging profile. This comprises causing the EVSE to provide at most the second maximum amount of charging resources to one or more electric vehicles charging with the EVSE. The method also comprises the control system determining that the communication connection between the control system and the central control system is broken and, based on this determination, the control system effectuating the default charging profile comprising causing the EVSE to provide at most the first maximum amount of charging resources to the one or more electric vehicles charging with the EVSE.