Redundant Power Line Switching for Autonomous Driving Loads
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Solution Overview
Problem
Dual power supply systems for autonomous vehicles lack standardization and are prone to power failures, which can lead to accidents due to unreliable power conversion modules.
Innovation Solution
A dual power supply apparatus is configured with parallel power lines and a processor to detect failures, switching to redundant lines and using separate power storage or conversion modules to ensure stable power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single power line is used to supply power to the autonomous driving load, then the device complexity is reduced, but the reliability deteriorates due to power supply failure risk
Solution Approach 1:
The power supply system is segmented into multiple independent power lines (first power line and second power line) that operate in parallel. Each power line can independently supply power to the autonomous driving load, so that when one power line fails, the other can continue to provide power support, thereby solving the technical contradiction between improving power supply reliability and reducing device complexity.
Solution Approach 2:
The system implements beforehand cushioning by pre-configuring redundant power lines and establishing failure detection mechanisms in advance. When a power line failure occurs, the system can immediately switch to the backup power line without interruption to the autonomous driving load, thus preventing power supply failures before they affect system operation.
2Reliability
If redundant power conversion modules are added to prevent power failures, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple power conversion modules (first power conversion module and second power conversion module) into a unified dual power supply apparatus. These modules work in parallel and can be mutually substituted, combining their functions to provide redundant power conversion capability while managing system complexity through integrated control.
Solution Approach 2:
The system implements parameter changes by dynamically switching between different power conversion modules based on their operational status. When one module fails, the system changes the operational parameters by activating the other module, thereby maintaining reliable power conversion while managing complexity through adaptive parameter adjustment.
3Reliability
If parallel power lines are configured for redundancy, then the reliability is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The first power line and second power line are designed with universal functionality, where each line can serve as either the primary or backup power supply path. This multi-functionality allows the same hardware configuration to fulfill multiple roles, improving power supply continuity while simplifying installation procedures compared to dedicated primary-secondary line configurations.
Data Source
AI summary
A dual power supply apparatus for a vehicle includes: at least one power device configured to supply power to an autonomous driving load or a general load in a vehicle, a pair of power lines provided between the at least one power device and the autonomous driving load, and a processor configured to determine whether a first power line of the pair of power lines has failed and to supply power to the autonomous driving load through a second power line of the pair of power lines in response to failure of the first power line.