EV Power Outlet Control to Protect Battery Range
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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 when the battery state of charge is critically low.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power is supplied to external devices through the power outlet, then the utility of the power system 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 distance to the nearest charging station, using this feedback information to dynamically control power outlet availability. When the distance to charging station is below a threshold, the system automatically restricts power outlet usage to prevent battery depletion, thereby resolving the contradiction between providing power supply versatility and maintaining sufficient driving range.
2Adaptability or versatility
If power outlet is made available for external devices, then the functionality of the vehicle is improved, but the risk of battery depletion increases
Solution Approach 1:
The system takes preliminary protective action by restricting power outlet availability before battery depletion can occur. When the distance to the charging station falls below a predetermined threshold, the system proactively disables or limits power outlet functionality, preventing the harmful effect of battery depletion before it can happen. This resolves the contradiction by prioritizing battery reliability while maintaining power outlet functionality when conditions are safe.
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.