Vehicle Electronic Unit Backup Battery for Access Control
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Solution Overview
Problem
Electronic vehicle locking and unlocking systems become non-operational when the vehicle's main battery fails, necessitating a backup solution for continued access control.
Innovation Solution
An electronic unit with a backup battery and voltage booster circuit powers the locking and unlocking system, allowing communication via electromagnetic signals for remote control, even when the main battery is faulty, using a telematics unit with a control module, backup battery, and voltage booster circuit to ensure continued operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If electronic control systems are used for locking and unlocking vehicle doors, then remote control and automated access management are enabled, but the system becomes non-operational when the vehicle's main battery fails
Solution Approach 1:
The patent applies preliminary action by equipping the electronic control unit with a backup battery that is pre-charged and ready to immediately take over power supply when the main battery fails. This ensures continuous operation of the locking/unlocking system without interruption, maintaining both automation and reliability.
Solution Approach 2:
The patent implements parameter changes by switching the power supply source from the main battery to the backup battery when voltage thresholds indicate main battery failure. The control unit monitors battery parameters and dynamically changes the power source configuration to maintain system operation under varying conditions.
2Reliability
If a backup battery is added to the electronic control unit, then system operation is maintained during main battery failure, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating the backup battery directly into the electronic control unit, combining multiple functions (access control, power management, and backup power supply) into a single integrated component. This reduces overall system complexity compared to having separate distributed power supply systems.
Solution Approach 2:
The control unit performs self-service by automatically monitoring its own power supply status and switching between main and backup batteries without external intervention. The system self-diagnoses battery failure conditions and autonomously transitions to backup power, simplifying the control architecture.
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
Enables continued control of vehicle doors for unlocking and locking, even during main battery failure, ensuring safety and access through remote commands via wireless communication, utilizing the emergency battery to maintain system functionality.
Implementation Method 1
a backup battery (24) arranged to power said module in the absence of a nominal voltage between said connection terminals (21, 23)
Implementation Method 2
a module (26) designed to transmit data in a communication channel using an electromagnetic signal
Data Source
Figure 1~2
AI summary
An electronic unit (20) for a vehicle (V) comprises a module (26) designed to emit data in a communication channel using an electromagnetic signal, connection terminals (21, 23) for connecting to a battery (10) of the vehicle (V), and a backup battery (24) arranged in such a way as to power said module (26) in the event of an absence of nominal voltage between the connection terminals (21, 23). The module (26) is moreover designed to emit a locking or unlocking command for at least one opening panel of the vehicle (V). A system comprising such an electronic unit and a method of unlocking are also described.