EVSE Assignment Using Connectivity Maps for Stable Depot Charging
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Solution Overview
Problem
Existing electric vehicle charging systems lack efficient methods to optimize the assignment of electric vehicle supply equipment (EVSE) for charging based on signal strength, leading to potential communication disruptions and suboptimal charging operations.
Innovation Solution
A system and method utilizing a connectivity map generated from signal strength data to assign electric vehicles to designated EVSE within a charge depot, enhancing communication reliability and optimizing charging operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If EVSE assignment is made without considering signal strength, then charging operations can proceed quickly, but communication reliability deteriorates leading to disruptions
Solution Approach 1:
The system performs preliminary signal strength measurements and creates a connectivity map before assigning EVSE to EVs. This advance preparation ensures that only EVSE with sufficient communication reliability are selected, preventing communication disruptions during charging operations while maintaining efficient throughput.
Solution Approach 2:
The system continuously monitors signal strength at EVSE locations and uses this feedback to dynamically adjust EVSE assignments. By incorporating real-time communication quality data into the assignment algorithm, the system maintains reliable communication links while optimizing charging operations.
2Measurement precision
If connectivity map is created using signal strength data, then EVSE assignment accuracy improves, but system complexity increases
Solution Approach 1:
The system uses the existing communication infrastructure and signal strength data already available in the charging environment to create the connectivity map. By leveraging existing resources rather than requiring specialized measurement equipment, the system achieves accurate signal strength measurements without significantly increasing system complexity.
3Reliability
If EVSE is assigned based on signal strength optimization, then communication stability improves, but charging time increases due to additional measurements
Solution Approach 1:
Signal strength measurements and connectivity map creation are performed in advance, before EV charging sessions begin. This preliminary action ensures that EVSE assignments are optimized for communication stability without adding measurement time during the actual charging process, thus maintaining efficient charging times.
Data Source
AI summary
A system for charging one or more electric vehicles (EV) at a charge depot includes one or more communication devices and one or more computing devices. The communication devices are configured to define a first wireless communication network (WCN) for the charge depot having a plurality of electric vehicle supply equipment (EVSE). The computing devices are configured to define a connectivity map of an area including the plurality of EVSE using signal strength data from at least one EVSE among the plurality of EVSE, where the connectivity map provides signal strength of the first WCN. The computing devices are further configured to transmit a charge instruction to an EV among the one or more EVs assigning a designated EVSE from among the plurality of EVSE at which the EV is to charge based on the signal strength at the designated EVSE provided by the connectivity map.