Vehicle Controller Update via Battery SOC Adjustment
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Solution Overview
Problem
The existing methods for updating a vehicle controller when the engine ignition is turned off face challenges in ensuring ignition performance due to energy consumption by the electric load, and incomplete updates can occur when there is a low remaining electric energy.
Innovation Solution
An update control apparatus and method that adjust the State of Charge (SOC) of a vehicle battery during driving to control charge or discharge, ensuring sufficient energy for the update while maintaining fuel efficiency, by determining an ultimate target SOC based on collected vehicle state information and controlling battery operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If update operation is performed when ignition is turned off, then update can be completed without interrupting driving, but ignition performance cannot be ensured due to electric energy consumption
Solution Approach 1:
The system performs preliminary charging of the battery before the update operation to ensure sufficient electric energy is available. The battery control device increases the target SOC during driving phases prior to the update, so that when ignition is turned off for updating, the battery has accumulated enough energy to maintain ignition performance throughout the update process.
2Productivity
If update operation is performed when ignition is turned off, then update can be executed, but update may not be completed when small amount of electric energy remains
Solution Approach 1:
The system continuously monitors the battery's SOC level and provides feedback to the battery control device. Based on this feedback, the control device dynamically adjusts the target SOC to ensure that sufficient energy is maintained throughout the update process, preventing interruption due to energy depletion.
3Reliability
If battery is charged to high SOC to ensure update energy, then update can be completed, but fuel efficiency deteriorates during driving
Solution Approach 1:
The system dynamically adjusts the target SOC based on the driving phase and update progress rather than maintaining a constantly high SOC. During normal driving, the target SOC follows standard fuel-efficient curves. When update is needed, the target SOC is temporarily increased only to the extent necessary to complete the update, then returns to normal levels, minimizing fuel efficiency loss while ensuring update completion.
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 ensures the ignition performance of the vehicle is maintained after updating the controller while maintaining fuel efficiency during data download, by adjusting the battery SOC to secure necessary energy for the update process.
Implementation Method 1
a battery control device that determines an update-based ultimate target SOC based on the collected vehicle state information and controls charge or discharge of a battery based on the determined ultimate target SOC
Data Source
AI summary
An update control apparatus for a vehicle controller includes a state information collecting device that collects vehicle state information when an update event of a vehicle controller occurs, a battery control device that determines an update-based ultimate target State of Charge (SOC) based on the collected vehicle state information and controls charge or discharge of a battery based on the determined ultimate target SOC, and a control device that downloads update data of the vehicle controller from an update server and updates the vehicle controller.