EV Power Outlet Control for Driving Range Protection
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Solution Overview
Problem
Electric vehicles face reduced driving range when supplying power to external devices through a power outlet, and existing systems lack effective management to prevent battery depletion.
Innovation Solution
A vehicle power management system that includes a battery, a power outlet, a display, and a controller. The controller assesses the difference between the vehicle's distance to empty and distance to station values and recommends against using high-power devices when the difference is below a certain threshold, and limits power output accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power is supplied from the battery to external devices through the power outlet, then the utility of the power outlet is improved, but the driving range of the vehicle is reduced
Solution Approach 1:
The system continuously monitors the state of charge of the battery and the power consumption of external devices, using this feedback information to dynamically adjust power supply levels and provide user recommendations, thereby optimizing the balance between power outlet utility and driving range preservation
Solution Approach 2:
The power supply system transitions from a static fixed-power output to a dynamic adjustable power output that can be modified in real-time based on battery state of charge, external device power rating, and user preferences, allowing the system to adapt between maximizing utility and preserving driving range
2Power
If high-power devices are connected to the power outlet, then the power capability of the outlet is improved, but the risk of battery depletion increases
Solution Approach 1:
The system performs preliminary assessment of the external device's power rating before full power supply is activated, and proactively provides recommendations or limits power supply when the device's power rating exceeds a predetermined threshold, preventing battery depletion before it occurs
Solution Approach 2:
The system applies preliminary countermeasures by limiting power supply or issuing warnings when high-power devices are detected, counteracting the potential harmful effect of battery depletion before the high-power device can drain the battery to a critical level
3Ease of operation
If power supply to external devices is unrestricted, then the ease of operation is improved, but the control over power consumption is reduced
Solution Approach 1:
The system automatically monitors battery state of charge, external device power ratings, and power consumption without requiring user intervention, self-adjusting power supply levels and providing recommendations, thereby maintaining ease of operation while implementing sophisticated power management control
Data Source
AI summary
A controller selectively generates output for display indicative of a recommendation against use of a power outlet in a vehicle with devices external to the vehicle having a power rating greater than a predefined power rating threshold based on a difference between a current state of charge of a battery of the vehicle and a required state of charge for the battery.