EV Charging Communication Parameter Adaptation After Session Failure
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Solution Overview
Problem
Existing electric vehicle charging infrastructure faces compatibility issues and charging session failures due to varying standards and parameters among different electric vehicle supply equipment (EVSE) operators, leading to inconvenient and inefficient charging experiences for drivers.
Innovation Solution
A system and method for adapting electric vehicle charging communication parameters, which includes a communication module in the vehicle to initiate and manage charging sessions with EVSE stations, extract and validate parameters, relax parameters if necessary, and transmit deviation data to a server for database storage, ensuring successful charging sessions while maintaining compliance with standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If charging stations operate using different charging criteria and parameters according to various interpretations of standards, then each operator can optimize their charging process, but compatibility issues and charging session failures occur between different EVSE operators and vehicles
Solution Approach 1:
The system dynamically adjusts charging parameters during the communication session between EV and EVSE. When a parameter mismatch or communication failure is detected, the system modifies parameters such as timeout values, voltage thresholds, and communication protocols to achieve successful charging while maintaining compliance with standards
Solution Approach 2:
The charging system transitions from static parameter configuration to dynamic parameter adaptation. The communication module continuously monitors charging progress and adjusts parameters in real-time based on actual charging conditions, EVSE response characteristics, and communication session status
2Manufacturing precision
If charging stations strictly enforce standard parameters (e.g., 7 second voltage reach time), then compliance with charging standards is maintained, but charging sessions may fail when vehicles require more relaxed parameters (e.g., 7.2 seconds)
Solution Approach 1:
The system initially attempts to charge with strict standard compliance, then progressively relaxes parameters if charging fails or communication issues occur. This allows the system to achieve charging success with minimal deviation from standards, applying flexibility only when necessary
Solution Approach 2:
The communication module implements feedback mechanisms that monitor charging session progress and detect failures. Based on this feedback, the system determines whether parameter relaxation is needed and adjusts subsequent charging attempts accordingly
3Ease of operation
If communication timeout parameters are extended beyond standard limits to accommodate slower EVSE responses, then charging session availability is improved, but vehicles may be permanently marked as non-conformant with standards
Solution Approach 1:
The system segments timeout handling into multiple levels: standard timeout for normal operation, extended timeout for specific EVSE types identified during communication, and fallback mechanisms for persistent failures. This allows timeout extension without permanently affecting standard conformance status
Data Source
AI summary
A system and method for adaptation of electric vehicle charging communication parameters that includes commencing, by an electric vehicle (EV), a communication session between the EV and an electric vehicle supply equipment (EVSE) charging station. The communication session includes extracting a vehicle charging communication session parameter from the EVSE charging station and validating, by the EV, that the vehicle charging communication session parameter with a default charging parameter. A direct current or an alternating current charging of the EV, based on a digital communication parameter received by the EVSE charging station, is initiated. In the event of a failure of the communication session, the vehicle charging communication session parameter is relaxed and a restarted EV charging session is initiated, where if the restarted EV charging session is successful, a deviation parameter is generated.