Mobility Controller Power Switching for Stable Battery-Limited Updates
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Solution Overview
Problem
Battery-based mobility systems face challenges in stable software updates due to difficulties in power supply management, particularly when battery charge levels are insufficient, leading to interrupted or impossible updates during vehicle operation.
Innovation Solution
A mobility system with a switching device and processor that efficiently manages power supply between multiple batteries and controllers based on their relative importance, current state, and vehicle driving conditions, ensuring stable updates by switching power sources and prioritizing updates according to battery capacity and safety considerations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If software updates are performed when the vehicle starting is turned off and the battery is sufficiently charged, then update reliability is improved, but update opportunities are reduced and productivity deteriorates
Solution Approach 1:
The system dynamically switches between different power supply configurations based on real-time battery state and vehicle operating conditions. The processor controls switching elements to change power supply mappings between batteries and controllers, enabling updates to proceed under various conditions (starting on/off, different battery charge levels) rather than requiring fixed conditions, thus resolving the contradiction between reliability and update frequency
Solution Approach 2:
The system changes the parameter of power supply configuration by switching which battery supplies power to which controller. When update reliability requires a sufficiently charged battery, the system switches to use a different battery for power supply, allowing updates to proceed even when the primary battery charge level is insufficient, thereby increasing update opportunities without compromising reliability
2Adaptability or versatility
If multiple batteries are used to supply power to different controllers, then power supply flexibility is improved, but device complexity increases
Solution Approach 1:
The system segments the power supply function by assigning different batteries to different controllers through controllable switching elements. Each switching element independently controls the power connection between a specific battery and controller, creating modular, manageable segments rather than a complex monolithic switching system. This segmentation approach enables flexible power supply configuration while keeping each switching control unit simple and manageable
Solution Approach 2:
The switching device is designed with multi-functionality to handle various power supply scenarios: normal operation, update mode, battery replacement mode, and emergency fallback. The same switching elements and processor control logic manage all these different operational modes, reducing the need for separate dedicated hardware for each function and thereby controlling overall device complexity while maintaining high adaptability
Data Source
AI summary
A mobility system includes: one or more controllers; one or more batteries; a switching device configured to switch connections between the one or more controllers and the one or more batteries; and a processor configured to control an order of update target controllers among the one or more controllers and batteries to supply power to the update target controllers among the one or more batteries by controlling the switching device based on at least one of relative importance of the one or more controllers, a present state of the one or more batteries, or a vehicle driving state.