Priority EV Charging Control on a Shared Dedicated Circuit
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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 and determining when each EV has reached a predetermined charge threshold to optimize charging time and reduce unnecessary energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple charging stations are installed to satisfy peak demand, then charging availability is improved, but installation cost increases
Solution Approach 1:
The patent combines multiple charging stations into a single shared charging infrastructure where multiple EVs can charge sequentially from one circuit. The controller manages multiple output connections that share a common power source, eliminating the need for separate dedicated circuits for each charging station while maintaining charging availability.
Solution Approach 2:
The charging station is designed with multiple output connections that can serve different EVs at different times. A single charging station performs the function of multiple stations by dynamically switching between connected vehicles, making the infrastructure universally applicable to multiple users without requiring proportional installation of separate stations.
2Device complexity
If charging stations are shared among multiple EVs, then installation cost is reduced, but convenience deteriorates due to vehicle relocation requirements
Solution Approach 1:
The controller automatically monitors the state of charge of each connected EV and autonomously switches between output connections without requiring user intervention. The system serves itself by detecting when vehicles are charged and automatically redirecting power to the next vehicle in line, eliminating the need for owners to manually relocate their vehicles.
Solution Approach 2:
The system continuously monitors the charging status of each EV through feedback signals from the vehicles and automatically adjusts power distribution. When an EV reaches its charge threshold, the controller receives feedback and automatically switches to the next connected vehicle, maintaining convenience while enabling cost-effective sharing.
3Speed
If charging current is continuously supplied to multiple EVs, then charging speed is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous charging of multiple vehicles, the system implements periodic charging where power is alternately supplied to different EVs in sequence. The controller switches between output connections at predetermined intervals or when charge thresholds are reached, providing high charging speed to each vehicle during its active period while avoiding the excessive energy consumption of simultaneous charging.
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.