Wireless Charging Electronic Lock Module With Autotuning

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Solution Overview

Problem

Conventional electronic door locks rely on disposable battery packs that require frequent replacement, necessitating regular maintenance and lacking a reliable wireless recharging solution.

Innovation Solution

A wireless battery charging system comprising an electronic lock module and an electronic control module that wirelessly transmits a charging signal to a rechargeable battery when its charge falls below a threshold, eliminating the need for periodic battery replacement through an inductively-coupled or RF-coupled link, with autotuning to optimize power transfer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If disposable battery packs are used to power electronic door locks, then the system can operate without complex charging infrastructure, but the batteries require frequent replacement and regular maintenance

Engineering Contradiction:

Improvesimplicity of system setupVSAvoidtime for battery replacement and maintenance

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The electronic door lock system performs self-recharging through wireless power transfer. The rechargeable battery automatically receives power from the charging module when the door is closed, eliminating the need for manual battery replacement and reducing maintenance time while maintaining system simplicity

Inventive Principle:

Principle #25Self-service

2Quantity of substance

If disposable battery packs are used in electronic door locks, then initial system cost is reduced, but ongoing maintenance costs increase due to periodic battery replacement

Engineering Contradiction:

Improveinitial material costVSAvoidmaintenance cost and effort

Core Design Contradiction:

Quantity of substanceVSEase of repair

Solution Approach 1:

Instead of discarding depleted disposable batteries, the system recovers energy continuously by capturing wireless power signals when the door is closed. The rechargeable battery accumulates energy over time, converting what would be wasted transmission energy into useful power, thereby eliminating ongoing maintenance costs while keeping initial material costs manageable

Inventive Principle:

Principle #34Discarding and recovering

3Reliability

If wireless charging is implemented for electronic door locks, then battery replacement is eliminated, but the system requires additional charging infrastructure and complexity

Engineering Contradiction:

Improveoperational continuity without maintenanceVSAvoidcomplexity of charging infrastructure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The wireless charging module serves multiple functions: it acts as both a security component (detecting door status) and a power transfer medium. The existing door closure mechanism that triggers security protocols also activates the wireless power transfer, eliminating the need for separate charging infrastructure and reducing system complexity while ensuring operational reliability

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Loss of time

If wireless power transfer is used to recharge batteries, then maintenance is reduced, but power transfer efficiency varies with transmission frequency

Engineering Contradiction:

Improvemaintenance frequencyVSAvoidpower transfer efficiency

Core Design Contradiction:

Loss of timeVSLoss of energy

Solution Approach 1:

The system dynamically adjusts the wireless power transfer parameters based on real-time conditions. The charging module monitors transmission effectiveness and modifies frequency and power levels adaptively, ensuring optimal energy transfer efficiency while maintaining reduced maintenance requirements through continuous autonomous recharging

Inventive Principle:

Principle #15Dynamics

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 system enables efficient and maintenance-free recharging of electronic door locks, enhancing operational efficiency and reducing maintenance costs by automatically determining the optimal transmission frequency for maximum power transfer.

Implementation Method 1

wireless battery charging system that includes an electronic lock module and an electronic control module configured to generate a wireless charging link

Methodology Applied

Scientific EffectElectromagnetic Induction: Electromagnetic Induction

Data Source

PatentUS10135288B2Electronic control module and driver module for controlling an electronic lock module

Publication Date: 2018.11.20 FP WIRELESS

AI summary

Example wireless power transfer systems and methods are described. In one implementation, an electronic control module is configured to generate a signal to be communicated to a transmitter coil. A driver module configured to receive the signal and compensate for any degradation in signal quality is electrically coupled to the electronic control module. The driver module is further coupled to the transmitter coil. A receiver coil, wirelessly electrically coupled to the transmitter coil, is configured to receive a wireless charging signal from the transmitter coil. The implementation also includes an electronic lock module electrically coupled to the receiver coil. The electronic lock module receives the wireless charging signal from the receiver coil and uses the wireless charging signal to charge a rechargeable battery electrically coupled to the electronic lock module.