Wireless Power Transfer for Electronic Locks
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Solution Overview
Problem
Conventional electronic locks rely on battery power, which requires periodic replacement, leading to inconvenience when the battery runs out, disrupting the functionality of the lock.
Innovation Solution
A non-contact power supply device using RFID technology to transmit and induce radio-frequency signals for electrical energy, eliminating the need for battery replacement by integrating a power supply unit with a power-receiving terminal to power the electronic lock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery unit is used to power the electronic lock, then the lock can function autonomously, but the battery must be periodically replaced when it runs out of power
Solution Approach 1:
The patent replaces the mechanical battery-based power supply system with an electromagnetic induction-based wireless power transfer system. The power supply device uses electromagnetic fields to transmit energy through a gap to the power receiving device, eliminating the need for physical battery installation and replacement. This substitution resolves the contradiction by maintaining continuous operation while eliminating the time loss associated with battery replacement.
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium to transfer energy between the power supply device and power receiving device. The electromagnetic field acts as a mediator that transmits power wirelessly through a gap, allowing energy transfer without direct physical contact or battery replacement. This intermediary approach resolves the contradiction by enabling continuous power supply while eliminating maintenance interruptions.
2Ease of operation
If a battery unit is installed in the electronic lock, then the lock can operate independently, but maintenance becomes inconvenient when battery replacement is needed
Solution Approach 1:
The patent replaces the mechanical battery-based power supply system with an electromagnetic induction-based wireless power transfer system. The power supply device uses electromagnetic fields to transmit energy through a gap to the power receiving device, eliminating the need for physical battery installation and replacement. This substitution resolves the contradiction by maintaining operational independence while significantly improving maintenance convenience.
Solution Approach 2:
The power receiving device automatically receives and converts electromagnetic energy into electrical power without requiring manual intervention for battery replacement. The system performs self-service by continuously charging the electronic lock through wireless energy transfer, eliminating the need for users to manually replace batteries and thereby improving ease of repair and maintenance.
3Reliability
If electromagnetic induction is used for power transmission, then battery replacement is eliminated, but a gap must be maintained between power supply and receiving members
Solution Approach 1:
The patent employs electromagnetic induction with a designed gap between the power supply member and power receiving member. By allowing a controlled gap rather than requiring direct contact, the system achieves reliable wireless power transmission while reducing the strictness of alignment requirements. This partial action approach resolves the contradiction by maintaining continuous power supply while managing device complexity through acceptable alignment tolerances.
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 continuous operation of the electronic lock without battery replacement, simplifying maintenance and reducing inconvenience, while also allowing for information identification and control functions.
Implementation Method 1
able to produce a radio-frequency signal, and the power-receiving member is set at a location opposite to the power supply member, able to receive and induce the radio-frequency signal of the power supply member to form electrical energy
Data Source
AI summary
A non-contact power supply device of an electronic lock includes a power supply unit and an electronic lock, and the power supply unit is oppositely provided with a power supply member and a power-receiving member. The power supply member is connected with a power source, able to produce a radio-frequency signal, while the power-receiving member can induce and receive the radio-frequency signal to form electronic energy to be supplied to the electronic lock for operation. Thus, the power supply member and the power-receiving member can carry out wireless signal transmission to have electronic energy supplied to the electronic lock for locking and unlocking a door, able to avoid the trouble that the battery unit of a conventional electronic lock must periodically replaced with a new one.