Battery Power Resumption via Key-Driven Voltage Generator
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Solution Overview
Problem
Existing battery management systems for vehicles do not provide a method to re-supply power to loads once it has been blocked to prevent over-discharge, limiting the functionality of vehicle electronic devices when the ignition is off.
Innovation Solution
An apparatus that includes a relay, a battery management system, and a voltage generator, where the power can be re-supplied to loads by rotating a key to drive a switch, allowing the battery to resume supplying power to loads when it has been blocked.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery management system blocks power supply to loads when voltage is below reference voltage to prevent over-discharge, then battery protection is improved, but the loads cannot be operated and door-lock release functionality is lost
Solution Approach 1:
The voltage generator is pre-positioned within the key cylinder structure, so that when the key is inserted and rotated, the voltage generator is already in place to provide power to the relay coil, enabling immediate door-lock release functionality without requiring separate power supply arrangements
Solution Approach 2:
The relay acts as an intermediary device that is activated by the voltage generator in the key, allowing the key to indirectly control the power supply to loads and door-lock system without directly connecting to the blocked battery power supply
2Reliability
If a relay is used to block power supply to loads, then over-discharge prevention is achieved, but no method is provided to resume power supply when needed
Solution Approach 1:
The relay's switching state is made dynamic through the voltage generator in the key, allowing the system to transition from a blocked state to an active state when the key is inserted and rotated, providing adaptability for power supply resumption
Solution Approach 2:
The mechanical key rotation action is converted into electrical energy by the voltage generator, which then activates the relay coil to change the relay's switching state, replacing a purely mechanical switching mechanism with an electromechanical one
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 the re-supply of battery power to loads in a vehicle through a simple door-lock release mechanism, preventing over-discharge and maintaining functionality of vehicle electronic devices even when the ignition is off.
Implementation Method 1
a voltage generator, configured to generate voltage by rotation of the key inserted into a door-lock key box
Data Source
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AI summary
An apparatus for controlling supply of power of a battery is provided. In particular the apparatus supplies battery power to various loads within a vehicle by a release of a door-lock using a key. The battery power is supplied to the loads by rotation of the key for releasing the door-lock (30) when the power of the battery supplied to the various loads is blocked by relay (10) under control of battery management system (20) to prevent over-discharge.