EV Charging Station Communication via Energy Conductor
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Solution Overview
Problem
Current electric vehicle charging infrastructure lacks the ability to negotiate and exchange additional charging parameters, such as different current levels and user-related billing information, between electric vehicles and charging stations, limiting the functionality of 'intelligent' charging stations and causing inconvenience in user billing.
Innovation Solution
A method and device that facilitate the communication of additional charging parameters between electric vehicles and charging stations via an energy conductor, using a communication unit connected to both pilot and energy conductors, allowing for the exchange of contract and network parameters without the electric vehicle's active participation, enabling reliable billing and compatibility with both 'intelligent' and conventional charging stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If charging stations use only pilot conductors for communication, then the system is simple and compatible with standard vehicles, but additional charging parameters cannot be exchanged
Solution Approach 1:
The patent combines the energy conductor (power supply line) with the communication function by superimposing communication signals on the energy conductor. This allows both power transmission and data exchange to occur through the same physical medium, eliminating the need for separate communication channels while enabling exchange of additional charging parameters.
Solution Approach 2:
The energy conductor is given multiple functions: it serves both as the power transmission medium and as a communication channel. By enabling bidirectional communication on the energy conductor, the system achieves multi-functionality without adding separate communication infrastructure.
2Loss of information
If communication signals are superimposed on energy conductors, then additional parameters can be exchanged, but signal interference may occur
Solution Approach 1:
The communication signals are transmitted periodically during the charging process rather than continuously. This periodic transmission reduces the likelihood of interference with the power flow and allows for signal regeneration and error correction between transmission cycles, improving overall signal reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables electric vehicles to connect to charging stations that require additional charging parameters, ensuring reliable billing and seamless communication of energy usage, even with vehicles that only support primary charging parameters, by acting as an intermediary for supplementary charging parameters.
Implementation Method 1
bidirectional communication is possible by means of signal modulation on the energy conductor
Data Source
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AI summary
Disclosed are a method and a device for connecting an electric vehicle (4) to a charging station (2'). In order to exchange supplementary charging parameters, a) a first pilot conductor (6a) connected to a charging station (2') receives a communication signal comprising a request from the charging station to communicate primary charging parameters, b) an energy conductor (6a) connected to the charging station (2') communicates at least one charging parameter signal comprising at least information on supplementary charging parameters, c) a charging current is released via the energy conductor (6a) according to the supplementary charging parameters communicated in step b).