Wireless Identification Module for Electric Vehicle Charging
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Solution Overview
Problem
Current methods for identifying electric vehicles during charging, such as Autocharge and Plug and Charge, face limitations due to the lack of support for PLC communication in many vehicles and the vulnerability of MAC addresses to manipulation, leading to inaccuracies in energy billing.
Innovation Solution
A wireless electronic identification module with a coil antenna and a unique identification code, designed to be attached to the charging connection of electric vehicles, uses radio signals for secure and tamper-proof identification, compatible with existing charging infrastructure and capable of being retrofitted onto various vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PLC communication via Power Line Communication is used for vehicle identification, then identification can be achieved, but many electric vehicles do not support this communication method making it unavailable
Solution Approach 1:
The patent introduces an intermediate identification device that couples between the power grid and the electric vehicle's charging system. This intermediary device performs the actual identification of the electric vehicle and determines charging parameters, bridging the gap between vehicles that may not directly support PLC communication and the charging infrastructure that needs to identify vehicles for billing and control purposes.
2Ease of operation
If MAC address is used for vehicle identification, then identification can be performed, but the MAC address can be changed through manipulation leading to feigned vehicle identity
Solution Approach 1:
The identification device performs preliminary identification of the electric vehicle before the charging process begins. By establishing the vehicle's true identity in advance through the intermediary device and using this information to pre-determine charging parameters, the system prevents later manipulation of identification data during the charging process.
Solution Approach 2:
The system implements feedback mechanisms where the identification device continuously verifies vehicle identity and communicates charging parameters back to the charging system. This closed-loop feedback ensures that any attempted manipulation of vehicle identity is detected and corrected, maintaining reliable vehicle identification throughout the charging process.
3Reliability
If a secure identification system is implemented, then manipulation is prevented, but the system complexity increases
Solution Approach 1:
The patent extracts the complex identification logic and security functions from the electric vehicle itself and places them in a separate, dedicated identification device. This separation allows the vehicle to remain simple while the identification device handles all complex authentication, verification, and parameter determination functions, reducing overall system complexity.
Solution Approach 2:
The identification device is designed as a universal component that can identify different types of electric vehicles and determine various charging parameters through a single integrated system. This multi-functional approach consolidates multiple functions (vehicle identification, authentication, parameter determination) into one device, reducing the need for multiple separate systems and thereby reducing overall complexity.
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
Ensures reliable and secure identification of electric vehicles during charging, preventing manipulation and enabling accurate billing by integrating the identification module into the charging connection, ensuring correct assignment of energy charges to the respective vehicle.
Implementation Method 1
an antenna with one or more conductor loops arranged like a coil and an electronic component connected to the antenna, in which a unique identification code is stored, the identification module being set up for this purpose in the event a query of the identification code carried out wirelessly by radio signals to transmit this via the antenna
Data Source
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AI summary
The invention relates to an identification module for the wireless electronic identification of an electric vehicle. The invention also relates to an electric vehicle with such an identification module, a charging device for charging the traction battery of an electric vehicle, and a set comprising a charging device and an identification module. The invention further relates to a method for attaching such an identification module to an electric vehicle.