Vehicle OTA Update Sequencing Under Battery Charging Constraints
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric vehicles face instability in CAN communication during high-voltage battery charging, preventing OTA updates, and incomplete updates when batteries are not sufficiently charged.
Innovation Solution
An apparatus and method that manage battery charging and OTA updates by receiving user approval for separate processes, allowing battery charging and OTA updates to be performed based on different power supplies and conditions, such as SOC values and vehicle speed, to ensure efficient and safe operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If battery charging is performed using the first power supply, then the battery can be charged, but CAN communication becomes unstable and OTA update cannot be operated
Solution Approach 1:
The power supply system is segmented into two independent power supplies: the first power supply for battery charging and the second power supply for OTA update operations. This segmentation allows charging and communication to occur simultaneously without interference, resolving the contradiction between charging capability and communication stability.
Solution Approach 2:
The second power supply acts as an intermediary power source that provides stable electrical power specifically for the control unit and communication systems during OTA updates. This intermediary power supply isolates the charging process from the communication process, preventing CAN communication instability while maintaining charging functionality.
2Ease of operation
If OTA update is performed when battery is not sufficiently charged, then the update process may start, but the update cannot be completed
Solution Approach 1:
The control unit checks the battery's state of charge (SOC) before initiating the OTA update process. If the SOC is below the predetermined threshold, the update is delayed until sufficient charge is available. This preliminary check ensures that updates have adequate power reserves to complete successfully, preventing incomplete updates while still allowing updates to proceed when conditions are favorable.
3Reliability
If user approval is required for both charging and OTA update, then process control is improved, but operation complexity increases
Solution Approach 1:
The approval mechanism is made dynamic with two distinct modes: when only OTA update is requested, a single approval suffices; when both charging and OTA update are requested, a second confirmation is required. This dynamic adjustment of approval requirements provides robust process control for critical operations while maintaining operational simplicity for standard updates, adapting the complexity level to the specific operational context.
Data Source
AI summary
An apparatus of operating an OTA update for a vehicle includes an input device receiving approval information for approving an OTA update process of a vehicle from a user and an execution device executing one of a first process or a second process in response to the approval information being entered. Each of the first process and the second process includes at least one of a battery charging process of a battery in the vehicle or the OTA update process of the vehicle.