Vehicle Power-Saving Control for Battery-Limited Travel Range
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Solution Overview
Problem
Electric vehicles face limitations in travel distance due to insufficient battery charge and the inefficiency of battery charging, which can lead to prolonged charging times and a lack of charging infrastructure, making it difficult to maintain continuous operation.
Innovation Solution
A vehicle control method that implements a power saving mode based on battery charge state, adjusting power consumption levels through power saving intensity levels 1 to 3, limiting non-essential electronic devices, and managing battery charge to optimize travel distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the vehicle operates with limited battery charge, then the traveling distance is extended through power saving mode, but the functionality of electronic convenience devices is reduced
Solution Approach 1:
The system dynamically adjusts the power consumption of electronic convenience devices based on the battery charge state. When the battery charge is sufficient, devices operate normally. When the charge becomes insufficient, the control unit automatically reduces power consumption by limiting non-essential devices, thereby extending traveling distance while maintaining user comfort through adaptive rather than static control
Solution Approach 2:
The system changes the operating parameters of electronic convenience devices based on battery charge levels. By monitoring the charge state and adjusting power consumption parameters (such as reducing display brightness, limiting climate control, or disabling non-essential systems), the vehicle extends its traveling distance while maintaining essential functionality
2Duration of action of moving object
If the main battery is charged to increase traveling distance, then the power availability is improved, but the charging time increases significantly
Solution Approach 1:
The system performs preliminary monitoring of battery charge state and proactively implements power saving measures before the battery is fully depleted. By detecting insufficient charge levels in advance and automatically limiting non-essential devices, the system extends traveling distance without requiring additional charging time, as the power management is preemptive rather than reactive
3Loss of energy
If the vehicle limits power to electronic convenience devices, then the battery charge is preserved for longer, but the user comfort and device availability are reduced
Solution Approach 1:
The system applies different power management strategies to different electronic devices based on their essentiality. Essential devices (such as driving-related systems, safety features, and basic comfort functions) maintain normal operation, while non-essential devices (such as entertainment systems, premium comfort features, and auxiliary systems) have their power limited. This localized differentiation preserves battery charge while maintaining user comfort for critical functions
Data Source
AI summary
A vehicle control method includes receiving information on a state of a main battery from a battery controller to a power controller so that a vehicle operates in a power saving mode, receiving, by the power controller, information on a possible travel distance of the vehicle determined by a drive controller using information on a charge amount of the main battery, receiving information on a determination that the vehicle cannot travel to a destination from the drive controller to the power controller using information on a remaining travel distance to the destination, and executing, by the power controller, the power saving mode depending on a level according to the information on the determination that the vehicle cannot travel to a destination.