Vehicle Power Distribution Module for Isolated Electrical Networks
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Solution Overview
Problem
Autonomous driving vehicles face challenges in maintaining stable power supply during system failures due to difficulties in detecting, isolating, and recovering from power system failures, which can compromise driver safety.
Innovation Solution
A vehicle system that includes a power supply unit, an electrical network with load sensors, and a power distribution module capable of forming an isolated electrical network by detecting faulty or high power consumption loads, and adjusting power output based on load requirements, ensuring stable power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle uses a centralized power distribution system, then the power supply structure is simple, but the system cannot isolate faulty loads leading to power instability during failures
Solution Approach 1:
The patent divides the centralized electrical network into multiple isolated electrical networks using power distribution modules that can selectively connect or disconnect loads. This segmentation allows faulty loads to be isolated from the main network, preventing system-wide failures while maintaining overall power distribution functionality.
Solution Approach 2:
The power distribution modules dynamically adjust the configuration of the electrical network by connecting or disconnecting loads based on real-time monitoring of current and voltage conditions. This dynamic reconfiguration enables the system to adapt to failure conditions and maintain stability without requiring a completely static complex structure.
2Reliability
If the vehicle implements failure detection and isolation functions, then the power restoration capability is improved, but the control system complexity increases
Solution Approach 1:
The power distribution modules autonomously detect failures through current and voltage monitoring and automatically isolate faulty loads without requiring complex centralized control algorithms. This self-service capability enables power restoration functionality while minimizing the complexity of the control system by distributing intelligence to individual modules.
Solution Approach 2:
The system continuously monitors current and voltage parameters and uses this feedback to automatically detect failures and trigger isolation actions. This feedback mechanism enables reliable power restoration capability through simple threshold-based detection rather than complex control logic.
3Reliability
If the vehicle forms an isolated electrical network during failures, then the power supply stability is maintained, but the device complexity increases
Solution Approach 1:
The electrical network is segmented into isolated sections that can operate independently. During failures, only the affected segments are reconfigured while the rest of the network continues normal operation, maintaining power stability without requiring complete system redesign.
Solution Approach 2:
The isolated electrical network configuration is dynamic rather than static. The system transitions between centralized and isolated configurations based on operational conditions, allowing power stability to be maintained only when necessary while avoiding permanent structural complexity.
Data Source
AI summary
A vehicle supplies stable and efficient power to a load of a vehicle during a failure or performance degradation of the vehicle by forming an isolated electrical network. The vehicle includes a power supply unit, an electrical network including at least one load configured to receive power from the power supply unit, and a sensor unit that acquires at least one of current flowing in a plurality of the electrical networks and a voltage supplied to the at least one load. A power distribution module determines an insolation required portion based on the current flowing in the electrical network and the voltage supplied to the at least one load, and connects or disconnects at least one point of the electrical network based on the isolation required portion to form an isolated electrical network.