Vehicle Power Outlet Current Detection for External Load Overdraw
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Solution Overview
Problem
Users may connect loads that consume excessive current to vehicle connection units, exceeding rated limits, potentially leading to issues such as smoke generation and impact on vehicle operations.
Innovation Solution
A power supply system with a connection unit, power supply unit, current detection unit, and notification unit that detects and alerts users when excessive current is drawn, allowing for controlled current interruption or limitation and user notification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the connection unit supplies power to external loads, then user convenience and adaptability are improved, but the risk of excessive current consumption and electrical hazards increases
Solution Approach 1:
The current detection unit continuously monitors current flow before hazardous conditions develop. The notification unit provides advance warning to users when current approaches unsafe levels, enabling preventive action before electrical hazards occur.
Solution Approach 2:
The system implements a feedback loop where the current detection unit monitors power consumption and the notification unit communicates status to the user. This closed-loop feedback enables real-time awareness and control of current usage, preventing excessive consumption while maintaining connection flexibility.
2Reliability
If the system blocks the load circuit to prevent excessive current, then electrical safety is improved, but user convenience and operational flexibility deteriorate
Solution Approach 1:
Instead of automatic blocking, the system uses feedback through the notification unit to inform users of current status. This allows users to make informed decisions about their load connections while maintaining system safety, avoiding unnecessary operational restrictions.
Solution Approach 2:
The system empowers users to manage their own power consumption by providing them with current status information. Users can independently decide whether to disconnect loads based on the notifications received, eliminating the need for system-imposed blocking while maintaining safety awareness.
Data Source
AI summary
In a power supply system mounted on a vehicle, a connection unit allows a user to connect a load (external load). The power supply unit supplies power to the load via the connection unit. The current detection unit (first current detection unit) detects a current flowing from the power supply unit to the load. The notification unit notifies the user of the attention information when the detected current is equal to or larger than the rated current.