Vehicle OTA Update Control Based on Battery and Alternator Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vehicle software updates often require significant battery power and cannot be performed while driving, leading to postponed updates, which may not consider the vehicle's power supply status effectively.
Innovation Solution
A method and system that determine the vehicle's power supply status based on battery charge and alternator-generated power, allowing automatic software updates if sufficient power is available, or enabling updates only when forced if power is limited, and preventing updates if power is insufficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If software updates are performed using scheduled updates or late-night updates, then updates can be executed without interrupting driving, but the battery charge level may be insufficient to complete the update
Solution Approach 1:
The system performs preliminary assessment of battery charge level and alternator power generation capability before initiating software updates. By evaluating power supply status in advance and determining whether additional power higher than the value required for OTA update is available, the system ensures sufficient power reserves are secured before the update process begins, preventing interruptions due to power depletion
Solution Approach 2:
The system continuously monitors battery charge level and alternator power generation during the update process. Based on real-time feedback about power supply status, the controller dynamically adjusts update execution - enabling automatic updates when power is sufficient, requiring forced execution when power is limited but adequate, and preventing updates when power is insufficient
2Productivity
If the vehicle performs OTA software update, then software performance is improved, but the vehicle requires additional electric power beyond normal operation
Solution Approach 1:
The system changes the power supply parameter by enabling supply of electric power higher than the value required for normal OTA update operation. By determining whether additional power beyond the base requirement is available from the alternator or battery, the system dynamically adjusts power allocation to support update operations without compromising vehicle operation
Solution Approach 2:
The system implements dynamic power management where the controller continuously evaluates power supply status and adjusts update execution strategy accordingly. The system transitions between different operational modes - automatic update when power is abundant, forced execution when power is constrained, and update prevention when power is insufficient - based on real-time conditions
3Ease of operation
If the vehicle allows automatic OTA software update, then update execution is simplified, but the risk of power depletion during update increases
Solution Approach 1:
The system performs preliminary verification of power supply status before enabling automatic updates. By determining in advance whether additional power higher than the value required for OTA update is available, the system ensures that automatic updates will not deplete power reserves, maintaining both ease of operation and power supply stability
Solution Approach 2:
The system prepares compensatory power measures in advance by evaluating alternator power generation capability and battery charge level before initiating updates. This beforehand cushioning ensures that sufficient power reserves are available to complete the update process without interruption, preventing the harmful effect of power depletion
Data Source
AI summary
A method of controlling a vehicle for stably performing over-the-air (OTA) software updates by fully considering a power supply status of the vehicle includes: determining a power supply status of the vehicle; determining whether to enable supply of an electric power higher than a value required to perform an over-the-air (OTA) software update of the vehicle based on the power supply status of the vehicle; and performing the OTA software update of the vehicle upon determining that the supply of the electric power higher than the value required to perform the OTA software update of the vehicle is possible.