EV Control Unit Non-Compliant Charger Communication
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Solution Overview
Problem
Rapid charging systems for electric vehicles face challenges when chargers do not comply with the new communication standard, leading to incomplete or failed charging processes due to unrecognized signals, which reduces the possibility of successful electric power exchange.
Innovation Solution
A control apparatus and method for electric vehicles that allows charging even when chargers are not fully compliant with the communication sequence, by identifying specific signals and proceeding with the communication sequence regardless of their content, ensuring the vehicle can establish a communication link and ensure safe power exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle strictly follows the communication sequence defined in the new charging standard, then communication reliability with compliant chargers is improved, but compatibility with non-compliant chargers deteriorates
Solution Approach 1:
The vehicle performs only the necessary communication actions required for safe charging rather than strictly following the entire new communication sequence. Specifically, the vehicle transmits a charging request and receives a charging response without executing the full communication protocol, thereby maintaining compatibility with non-compliant chargers while ensuring charging safety through essential signal exchange.
2Measurement precision
If the vehicle proceeds with the communication sequence based on signal content from the charger, then communication accuracy is improved, but charging failure with non-compliant chargers increases
Solution Approach 1:
The vehicle extracts only the essential charging parameters from the charger's response signal without validating the entire signal content against the new communication standard. This allows the vehicle to proceed with charging using the extracted necessary information while ignoring non-compliant portions of the communication sequence, thereby maintaining charging success with diverse chargers.
3Reliability
If the vehicle implements strict compliance checking with the new charging standard, then communication security is improved, but charging accessibility deteriorates
Solution Approach 1:
The communication process is segmented into essential charging signals and optional protocol compliance signals. The vehicle processes only the essential charging signals (charging request and charging response) to ensure accessibility with all chargers, while treating full protocol compliance as an optional enhancement rather than a mandatory requirement.
Data Source
AI summary
A control apparatus of a vehicle includes an input and output port configured to input and output signals transmitted and received between the vehicle and a charger and an electronic control unit configured to control the transmission and reception of the signals through the input and output port according to a communication sequence defined in order to charge an electric power storage device. The communication sequence defines that the vehicle proceeds with the communication sequence based on a content represented by the signal received by the vehicle from the charger. The electronic control unit is configured to proceed with the communication sequence regardless of the content represented by a predetermined specific signal when the signal received from the charger is the predetermined specific signal.