Vehicle OTA Update Control Using Battery State of Charge
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Solution Overview
Problem
Over-the-air (OTA) updates for vehicles can leave vehicles unable to start due to battery capacity issues, especially when batteries are aged or performance deteriorates in winter, and may reduce update efficiency if battery residual capacity is not managed properly.
Innovation Solution
A device and method that use a sensor to monitor the vehicle's battery state of charge and adjust the transmission time interval for OTA updates, determining whether the vehicle can start after the update and deciding whether to stop or continue the update based on battery capacity, ensuring sufficient residual capacity for starting the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If OTA update is performed in key-off state using battery power, then update convenience is improved, but battery capacity may be insufficient for vehicle starting after update
Solution Approach 1:
The controller performs preliminary assessment of battery capacity before initiating OTA update. It calculates whether the battery has sufficient capacity to complete the update and still maintain enough charge for vehicle starting, preventing updates that would leave the vehicle unable to start.
Solution Approach 2:
The system dynamically adjusts the OTA update process based on real-time battery state monitoring. If battery capacity drops below threshold during update, the system can pause or terminate the update to ensure vehicle starting capability is maintained.
2Loss of time
If transmission time interval is reduced to complete update faster, then update time is reduced, but battery capacity consumption increases
Solution Approach 1:
The system uses periodic action by adjusting transmission time intervals based on battery state. When battery capacity is sufficient, faster transmission intervals are used to complete updates quickly. When battery capacity is low, transmission intervals are extended to reduce power consumption, balancing update speed with energy conservation.
3Device complexity
If OTA update is performed without battery capacity management, then update process is simple, but update efficiency decreases when battery residual capacity is insufficient
Solution Approach 1:
The system implements feedback by continuously monitoring battery state during OTA update and adjusting the update process accordingly. This feedback mechanism ensures updates are performed efficiently by adapting transmission parameters to current battery conditions, preventing failed updates due to insufficient power.
Data Source
AI summary
A device and a method for controlling an update of a vehicle are configured to control an over-the-air (OTA) update of the vehicle. The device is disposed in the vehicle performing the OTA update to obtain information on a state of charge of a battery of the vehicle, transmit information on the OTA update to an update target device, and adjust a transmission time interval between data of the information on the OTA update transmitted to the update target device. The present disclosure can prevent a situation in which starting of the vehicle is impossible because of a lack of a capacity of the battery after performing the OTA update.