Charging Control Apparatus for EV Cable Conformity
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Solution Overview
Problem
Existing vehicle charging systems fail to effectively judge conformity to standards until the main switch of the power feed line is switched ON, leading to potential safety issues and inefficiencies in charging control.
Innovation Solution
A charging control apparatus comprising a power feed unit, control unit, control signal detection section, power detection section, and judgment section that detects control signals and power after connection to the vehicle's charging inlet, judging conformity to standards and limiting or forbidding charge if non-compliant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the main switch of the power feed line is switched ON before judging charging cable conformity, then charging can begin immediately, but safety issues and standard compliance cannot be ensured
Solution Approach 1:
The judgment section performs conformity judgment of the charging cable to SAE standards before the main switch is turned ON and before charging begins. This preliminary action ensures that only compliant cables are allowed to charge, resolving the contradiction by prioritizing safety verification without delaying the charging process.
2Reliability
If the main switch is switched OFF to ensure safety judgment, then standard compliance is ensured, but charging time is extended
Solution Approach 1:
The conformity judgment is executed in the period between cable connection and main switch activation, utilizing time that would otherwise be idle. This approach ensures standard compliance is verified without adding extra time to the actual charging process, as the judgment occurs during the pre-charging preparation phase.
3Ease of operation
If charging cable conformity is not judged before charging, then charging process is simpler and faster, but safety issues and potential hazards arise
Solution Approach 1:
The charging control apparatus automatically performs conformity judgment of the charging cable without requiring manual intervention or complex user operations. The system self-verifies cable compliance with SAE standards through automated detection and judgment, maintaining operational simplicity while eliminating safety hazards through automatic safety verification.
Data Source
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AI summary
A method for controlling charge after judging as to whether a charging cable CC connected to a charging inlet E1 of a vehicle conforms to standards has detecting whether a control signal is outputted from the charging cable CC and whether power is supplied from the charging cable CC after the charging cable CC is connected to the charging inlet E1 until a main switchE5, E6 of a power feed line E8 of the vehicle is switched ON; judging that the charging cable CC does not conform to the standards at least when no control signal is detected and the power is detected; and forbidding the charge or limiting a charging current through the charging cable CC when judging that the charging cable CC does not conform to the standards.