Vehicle Power Supply Box Recovery Switch for Abnormality Handling
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Solution Overview
Problem
Existing vehicle power supply systems are vulnerable to unexpected abnormalities such as disconnection or contact failures, which can lead to power outages for critical electric devices, potentially causing safety hazards during driving, turning, or stopping.
Innovation Solution
A vehicle power supply box device with a recovery switch system that reroutes power from a secondary input line to critical devices when an abnormality is detected, ensuring continuous power supply by integrating fuses, relays, and a control unit to manage power distribution and alert the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single power supply line is used to feed electric power to electric devices, then the device complexity is reduced, but the reliability of power supply to critical electric devices deteriorates when disconnection or contact failure occurs
Solution Approach 1:
The power supply system is segmented into multiple independent power supply lines (first power supply line and second power supply line), each capable of independently feeding power to the electric device. This segmentation allows the system to maintain power supply reliability even when one line experiences disconnection or contact failure, as the other line can continue to operate.
Solution Approach 2:
The system changes the operational state of the power supply lines by switching between normal operation (using first power supply line) and abnormal operation (using second power supply line via recovery switch). This parameter change in the power supply configuration enables the system to adapt to different operational conditions and maintain reliability.
2Reliability
If a recovery switch system with multiple power supply lines is implemented, then the reliability of power supply to critical electric devices is improved, but the device complexity increases
Solution Approach 1:
The recovery switch acts as an intermediary component that enables switching between the first power supply line and the second power supply line. This intermediary element allows the system to maintain reliability by providing a controlled path for power flow during abnormal conditions, while its automated control minimizes the operational complexity for the user.
Solution Approach 2:
The control unit monitors the operational status of the power supply lines and automatically controls the recovery switch based on detected abnormalities such as disconnection or contact failure. This feedback mechanism enables the system to autonomously respond to failures, maintaining reliability without requiring complex manual intervention.
3Loss of energy
If power is continuously supplied to all electric devices, then the ease of operation is improved, but the loss of energy increases during abnormal conditions
Solution Approach 1:
The power supply system dynamically adjusts its configuration based on operational conditions. During normal operation, the first power supply line feeds power to electric devices. During abnormal conditions, the system dynamically switches to the second power supply line through the recovery switch, and the control unit can dynamically control power distribution to minimize energy loss while maintaining essential functions.
Data Source
AI summary
A vehicle power supply box device includes: a first system which feeds electric power to first group electric parts requiring constant feed of power supply electric power; a second system which feeds electric power from to second group electric parts requiring feed of power supply electric power in response to a state of an ignition switch. The device further includes: a recovery switch portion connected between a second input side power supply line and an input of the first system; an input abnormality detecting portion which detects presence/absence of abnormality in the input of the first system; and a recovery control portion which controls the recovery switch portion to be turned ON/OFF in accordance with the presence/absence of the abnormality detected by the input abnormality detecting portion.