Distributed EV Charger Power Distribution via Peer Communication
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Solution Overview
Problem
Existing electric vehicle charging systems face challenges in efficiently distributing power among multiple chargers connected to the same power supply source without an external communication function, leading to difficulties in power distribution and increased installation costs.
Innovation Solution
A power supply method that enables mutual communication between electric vehicle chargers connected to the same power supply source, allowing them to share charging state information and efficiently distribute power without the need for a main charger.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a main charger directly controls multiple sub-chargers in a centralized multi-charging method, then power distribution control is achieved, but installation and maintenance costs increase and system reliability decreases when the main charger fails
Solution Approach 1:
The patent divides the centralized control function into individual distributed control units, where each charger independently communicates with other chargers and the server. This eliminates the single point of failure (main charger) by segmenting the control architecture into multiple autonomous nodes that can operate independently.
Solution Approach 2:
The patent extracts the central control function from a dedicated main charger and distributes it across all chargers in the network. Each charger is equipped with communication capabilities to interact directly with the server and other chargers, removing the dependency on a centralized control unit.
2Productivity
If chargers are equipped with external communication functions to enable power distribution control, then efficient power management is achieved, but installation costs increase
Solution Approach 1:
The patent makes each charger multi-functional by equipping them with communication capabilities that allow them to perform both charging functions and control/communication functions. This eliminates the need for separate main charger hardware, as ordinary chargers can execute control logic and communicate with the server directly.
Solution Approach 2:
Each charger is designed to be self-sufficient with built-in communication and control capabilities, allowing it to independently manage its own charging operations and communicate with the network without requiring a dedicated main charger to mediate all control functions.
3Ease of manufacture
If multiple chargers operate independently without communication capabilities, then installation costs are reduced, but power distribution control and charging efficiency decrease
Solution Approach 1:
The patent combines the control and communication functions with the charging functions in a single integrated charger unit. By merging these capabilities into ordinary chargers, the system achieves efficient power distribution and coordination without requiring separate main charger equipment or additional infrastructure.
Data Source
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AI summary
The present invention relates to a power supply method of an electric vehicle charger in which multiple chargers are connected to the same power supply source, the power supply method comprising operations of allowing an electric vehicle to be connected to a first charger, generating a charging start signal from the first charger, receiving, by one or more other chargers, the charging start signal, generating a charging state signal from the other chargers, receiving, by the first charger, the charging state signal and determining the amount of supplied power of the first charger.