EVSE Power Synchronization for Multi-Vehicle Bidirectional Transfer
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Solution Overview
Problem
Existing electric vehicle supply equipment (EVSE) lacks the capability to efficiently manage bidirectional energy transfer between multiple electric vehicles and external entities, such as homes or grids, while ensuring optimal energy distribution and utilization.
Innovation Solution
The proposed EVSE system includes first and second connectors and a controller that synchronizes electric power from engaged vehicles and supplies it to an external entity. The controller also adjusts power output from one vehicle while increasing it from the other to maintain efficient energy distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the EVSE connects multiple vehicles to transfer energy bidirectionally, then the energy utilization efficiency is improved, but the system complexity increases
Solution Approach 1:
The EVSE acts as an intermediary device between multiple vehicles and external entities (grid or home). It manages the bidirectional energy transfer by receiving power from vehicles, synchronizing it with external entities, and distributing it appropriately. This mediator role simplifies the overall system architecture by centralizing control functions in the EVSE rather than requiring direct peer-to-peer coordination between vehicles.
Solution Approach 2:
The EVSE is designed with multi-functionality to handle various energy transfer scenarios: charging vehicles from the grid, discharging vehicles to the grid, vehicle-to-vehicle energy transfer, and home charging/discharging. This universal design consolidates multiple functions into a single device, improving energy utilization without proportionally increasing system complexity.
2Stability of the object's composition
If the EVSE synchronizes power from multiple vehicles, then the power distribution stability is improved, but the control complexity increases
Solution Approach 1:
The EVSE implements feedback control by continuously monitoring the power output from each vehicle, the state of external entities (grid or home), and adjusting the power distribution accordingly. The controller receives status information from vehicles and external entities, synchronizes the power parameters, and dynamically adjusts the energy transfer to maintain stable power distribution while managing control complexity through automated feedback loops.
3Productivity
If the EVSE manages bidirectional energy transfer, then the energy distribution optimization is improved, but the measurement and detection difficulty increases
Solution Approach 1:
The EVSE replaces manual or mechanical power management with an automated electronic control system. The controller electronically monitors and measures power parameters from multiple vehicles and external entities, performing synchronization and optimization calculations automatically. This substitution of electronic control for mechanical/manual operations simplifies the measurement and detection processes while enabling sophisticated energy distribution optimization.
Data Source
AI summary
Electric vehicle supply equipment includes at least first and second connectors, and a controller. The controller, responsive to detecting the first and second connectors are engaged with first and second vehicles respectively, synchronizes electric power from the first and second vehicles and supplies the electric power to an entity other than the first and second vehicles.