Priority EV Charging Circuit for Multi-Vehicle Load Sharing
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Solution Overview
Problem
The high cost and inefficiency of installing and managing electric vehicle (EV) charging stations, particularly due to peak demand requirements and the need for shared charging infrastructure, pose challenges for businesses and EV owners in terms of convenience and cost.
Innovation Solution
A multivehicle charging system that utilizes a single dedicated circuit to rotate charging among multiple EVs connected to different output connections, with a controller managing the distribution of electricity based on state of charge and load detection, allowing for efficient and cost-effective charging without the need for dedicated circuits for each station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated circuit is installed for each charging station to ensure reliable power supply, then the reliability of charging service is improved, but the installation cost and device complexity increase significantly
Solution Approach 1:
The patent combines multiple charging stations into a single group that shares one dedicated circuit. The controller intelligently distributes power among multiple charging stations, allowing them to operate reliably without each requiring its own separate circuit. This merging approach maintains charging service reliability while significantly reducing the complexity and cost of electrical infrastructure installation.
Solution Approach 2:
The dedicated circuit serves multiple charging stations simultaneously through intelligent control, making the circuit multi-functional. The controller dynamically allocates power capacity to different charging stations based on their current needs and the state of charge of connected vehicles, allowing a single circuit to fulfill the reliability requirement for multiple stations without over-provisioning.
2Productivity
If multiple charging stations are installed to satisfy peak demand, then the availability of charging services is improved, but the installation cost and loss of energy increase
Solution Approach 1:
The controller implements periodic monitoring and dynamic power allocation to multiple charging stations. Instead of continuously supplying full power to all stations, the system periodically assesses the state of charge of connected vehicles and adjusts power distribution accordingly, reducing energy waste during periods when charging demand is low while maintaining service availability.
Solution Approach 2:
The system dynamically changes operational parameters (power allocation levels) based on real-time conditions such as vehicle state of charge, charging speed requirements, and grid availability. This allows multiple charging stations to maintain high availability while optimizing energy utilization and minimizing losses through adaptive parameter adjustment rather than static over-provisioning.
3Ease of manufacture
If charging stations are shared among multiple EVs to reduce cost, then the installation cost is reduced, but the convenience of charging and time efficiency deteriorate due to frequent vehicle repositioning
Solution Approach 1:
The intelligent controller automatically manages power distribution among multiple charging stations without requiring user intervention. EV owners simply connect to any available charging station in the group, and the system self-manages the power allocation, eliminating the need for users to reposition vehicles or manually manage charging schedules, thereby maintaining convenience while sharing infrastructure.
Solution Approach 2:
The controller proactively monitors the state of charge of vehicles connected to charging stations and anticipates when charging will be complete. It prepares power reallocation in advance, ensuring seamless transitions between vehicles and maintaining continuous charging service availability, which improves user convenience despite shared infrastructure.
4Device complexity
If a single dedicated circuit serves multiple charging stations through intelligent control, then the device complexity and installation cost are reduced, but the reliability of power supply to each station may worsen
Solution Approach 1:
The controller implements continuous feedback monitoring of power consumption, vehicle state of charge, and charging station status. Based on this real-time feedback, the system dynamically adjusts power allocation to maintain reliable charging service at each station while sharing a single dedicated circuit, preventing power shortages and ensuring service reliability without requiring complex separate circuits for each station.
Data Source
AI summary
A controller includes a processor, memory, and two channels connected to the processor. The first channel and the second channel deliver charging current to charge an electric vehicle. The first channel is operable for delivering a first charging current to a first output connection having a first output head, and the second channel is operable for delivering power to a second controller that is operable for providing a second charging current to a second output connection having a second output head and a third output head.