Backup Power Source Device with Boost Circuit for Emergency Door Lock Release
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Solution Overview
Problem
Conventional backup power source devices in vehicles cannot reliably supply the necessary voltage to operate safety equipment like airbag starting circuits and door locks in emergency situations, especially when the main battery is damaged in an accident.
Innovation Solution
A backup power source device incorporating a capacitor, a charging circuit that steps down input voltage, a boost circuit to increase output voltage, and a door-lock-releasing output terminal, which ensures that door locks can be released by boosting the voltage and supplying it to the necessary motors, enhancing passenger safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional backup power source device without a boost circuit is used, then the device structure is simple, but the device cannot supply sufficient voltage to operate safety equipment like door locks in emergency situations
Solution Approach 1:
The backup power source device is segmented into distinct functional modules: a charging circuit module for normal operation, and a boost circuit module for emergency voltage boosting. This segmentation allows each module to be optimized independently - the charging circuit maintains simple structure for regular use, while the boost circuit provides the necessary voltage multiplication capability only when needed, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The capacitor is pre-charged during normal vehicle operation through the charging circuit, storing energy in advance. When an emergency occurs and the main battery fails, this pre-stored energy can be immediately boosted to sufficient voltage by the boost circuit to operate safety equipment like door locks. This preliminary action ensures that the backup system can reliably provide sufficient voltage without requiring a complex real-time power generation system.
2Power
If a backup power source device with boost circuit is added, then the device can supply high voltage for door lock release, but the device complexity increases
Solution Approach 1:
The boost circuit is designed to serve multiple safety functions: it can boost voltage for door lock release motors, airbag ignition systems, and other emergency safety equipment. By making the boost circuit universal and multi-functional, the patent avoids adding separate voltage boosting systems for each safety device, thereby providing high output voltage capability while minimizing the increase in device complexity.
Solution Approach 2:
The control circuit automatically detects when the main battery voltage is insufficient and autonomously activates the boost circuit to provide the necessary high voltage. The system also automatically manages the capacitor charging and discharging cycles. This self-service capability eliminates the need for complex manual control systems or additional sensors, allowing the device to achieve high power output while keeping the control architecture relatively simple.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively releases door locks at a sufficiently high voltage, enabling emergency escape by boosting the voltage of the capacitor and supplying it to the door-lock-releasing output terminal, thereby enhancing safety in emergency situations.
Implementation Method 1
a charging circuit, wherein the charging circuit is provided in a charging path of the capacitor and steps down an input voltage of the charging circuit
Implementation Method 2
a boost circuit, wherein the boost circuit is provided in an output path of the capacitor
Implementation Method 3
a capacitor; a charging circuit, wherein the charging circuit is provided in a charging path of the capacitor
Data Source
AI summary
A backup power source device includes the following elements: a capacitor; a charging circuit provided in the charging path of the capacitor and performing step-down operation; a boost circuit provided in the output path of the capacitor; and a door-lock-releasing output terminal connected to the boost circuit.