Vehicle Wireless Controller Power Management
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Solution Overview
Problem
Conventional wireless communication controllers in vehicles consume excessive 'dark current' during standby periods due to fixed international standards, limiting battery life and failing to adapt to user-specific patterns or autonomous vehicle needs.
Innovation Solution
A power management system that determines the vehicle's status and switches between battery and backup capacitor power sources based on predicted network reconnection times, minimizing current consumption by converting to standby mode when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless communication controller maintains standby mode for extended periods to provide remote services, then service availability is improved, but dark current consumption increases and battery life decreases
Solution Approach 1:
The system dynamically switches between different power sources (battery and backup capacitor) based on the vehicle's operational state and predicted network reconnection timing. The wireless communication controller adjusts its power consumption profile by transitioning between active and standby modes based on real-time conditions, rather than maintaining a fixed standby state.
Solution Approach 2:
The system predicts network reconnection times in advance and proactively switches to the backup capacitor power source before the actual reconnection occurs. This preliminary action allows the battery to be preserved for critical functions while the backup capacitor handles the wireless communication controller's standby power requirements during predicted idle periods.
2Speed
If the wireless communication controller remains in active state to ensure immediate service response, then response time is improved, but battery consumption increases
Solution Approach 1:
The backup capacitor acts as an intermediary power source between the battery and the wireless communication controller. It absorbs the power demand during standby periods, allowing the battery to remain in a low-consumption state while still enabling the controller to respond quickly when service is needed, as the capacitor can provide immediate power without requiring the battery to remain active.
3Reliability
If fixed international standards for wireless communication are followed, then communication reliability is improved, but adaptability to user-specific patterns and autonomous vehicle needs is reduced
Solution Approach 1:
The system changes operational parameters (power source selection, standby duration, active mode timing) based on predicted user behavior patterns and autonomous vehicle operational states. While maintaining compliance with international communication standards, the system adapts its power management parameters dynamically to optimize for specific usage scenarios, such as extending standby periods when user absence is predicted or reducing power consumption during autonomous operation phases.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach extends battery life by optimizing power usage and ensuring fail-safe functionality during extended standby periods, enhancing vehicle safety and convenience.
Implementation Method 1
a backup capacitor as a sub power source
Data Source
AI summary
A method of managing backup power for wireless vehicle communication is provided. The method includes determining whether a vehicle is turned on or off and when the vehicle is turned off, determining whether a wireless communication unit in the vehicle is in a sleep mode. When the wireless communication controller is in the sleep mode, the wireless communication controller is converted into a standby mode, and power-switching control is performed based on a standby time according to the standby mode.