Door Lock Emergency Charging via Solar Cell Module
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door locks with batteries face inconvenience due to battery discharge, leading to operational stops, and existing solutions either expose battery terminals or require users to carry spare batteries or rotate handles, which are cumbersome.
Innovation Solution
An emergency charging device for door locks incorporating a primary battery, a solar cell module, and a secondary battery, where the door lock control unit switches between the primary and secondary batteries based on charge levels, and uses solar energy to charge the secondary battery in emergency situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery terminal is exposed on the outside of the door lock to allow battery replacement, then the problem of operational stop caused by battery discharge is solved, but users must always carry other batteries which causes inconvenience
Solution Approach 1:
The door lock system performs self-charging by converting mechanical energy from handle rotation into electrical energy through a power generation device, eliminating the need for users to carry spare batteries. The system serves itself by generating and storing electrical energy internally through the secondary battery powered by the solar cell module.
Solution Approach 2:
The solar cell module continuously charges the secondary battery in advance during normal operation, so that when the primary battery is discharged, the secondary battery is already charged and ready to take over, ensuring continuous door lock operation without requiring users to carry spare batteries.
2Reliability
If a power generation device using rotational force of the handle is added to charge the battery, then the door lock can operate continuously, but the structure becomes complicated
Solution Approach 1:
The patent combines the solar cell module with the existing handle structure, merging the power generation function into the existing mechanical component. This integration allows the door lock to generate electricity through handle rotation without adding a completely separate power generation system, thus reducing overall structural complexity.
Solution Approach 2:
The handle serves dual functions: its primary function for opening/closing the door and its secondary function as a power generation mechanism through the integrated solar cell module. This multi-functionality eliminates the need for dedicated charging components, simplifying the overall device structure.
3Reliability
If a secondary battery is added to store electrical energy for emergency charging, then the door lock can operate when the primary battery is discharged, but the device complexity increases
Solution Approach 1:
The secondary battery is nested within the existing door lock structure alongside the primary battery, with both batteries sharing the same electrical system. The control unit manages power switching between the two batteries, allowing the secondary battery to take over when the primary battery is discharged without requiring a completely separate emergency power system.
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
This solution delays battery discharge and allows easy, rapid charging using light, enabling continued door lock operation even when the primary battery is discharged, thus addressing the inconvenience of battery-related operational stops.
Implementation Method 1
a solar cell module configured to receive external light and to output a voltage
Data Source
AI summary
The present invention relates to an emergency charging device and method for a door lock and specifically to an emergency charging device and method for a door lock, capable of: charging a secondary battery by means of light or a battery in a regular charging mode in which the battery is not discharged and, at the same time, operating the door lock by means of the battery or the secondary battery according to the amount of charge; and operating the door lock in an emergency manner by urgently charging the secondary battery by means of light in an emergency charging mode in which the battery is discharged.