Wireless Power Transfer Between Elevator Cars
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Solution Overview
Problem
Conveyance systems, such as elevator systems, face challenges due to the added expense, weight, and complexity of traveling cables used for powering elevator cars, necessitating an improved method for electrical power transmission.
Innovation Solution
A wireless power transfer system that uses wireless electrical power transceivers and transmitters to wirelessly power conveyance apparatus, eliminating the need for physical cables by transferring electrical power between elevator cars through magnetic fields generated by coils, allowing for efficient power distribution between multiple elevator systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traveling cables are used to power elevator cars, then reliable power supply is achieved, but device complexity and installation cost increase
Solution Approach 1:
The patent extracts and removes the traveling cable component from the elevator system by implementing wireless power transfer between adjacent elevator cars through their walls, thereby eliminating the complexity and installation burden of cables while maintaining power supply reliability
Solution Approach 2:
The patent introduces an intermediary wireless power transfer mechanism using electromagnetic fields through walls as a mediator to transmit power between elevator cars, replacing the direct physical connection of traveling cables with an indirect field-based transmission path
2Power
If traveling cables are used to power elevator cars, then power transmission is achieved, but weight of the system increases
Solution Approach 1:
The patent removes the heavy traveling cable infrastructure from the elevator system and replaces it with lightweight wireless power transfer components integrated into the elevator car structures, significantly reducing the overall moving weight while preserving power transmission capability
3Power
If traveling cables are used to power elevator cars, then electrical power is delivered, but installation cost increases
Solution Approach 1:
The patent eliminates the expensive traveling cable installation process by implementing wireless power transfer through existing wall structures between adjacent elevator cars, thereby reducing installation costs while maintaining electrical power delivery capability
Solution Approach 2:
The patent enables elevator cars to serve each other as power sources through wireless transfer, eliminating the need for extensive external cable infrastructure and reducing installation complexity and cost
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 wireless powering of multiple elevator cars, reducing installation complexity and costs while maintaining reliable power supply, thereby enhancing the operational efficiency of conveyance systems.
Implementation Method 1
transferring electrical power between elevator cars through magnetic fields generated by coils
Data Source
AI summary
A wireless power transfer system for wirelessly powering a conveyance apparatus of a first conveyance system and a conveyance apparatus of a second conveyance system including: a wireless electrical power transceiver located along a surface of the conveyance apparatus of the first conveyance system, a wireless electrical power transceiver located along a surface of the conveyance apparatus of the second conveyance system, the surface of the conveyance apparatus of the second conveyance system being opposite of the surface of the conveyance apparatus of the first conveyance system, wherein the wireless electrical power transceiver of the first conveyance system is configured to wirelessly transfer electrical power to the wireless electrical power transceiver of the second conveyance system when the wireless electrical power transceiver of the first conveyance system and the wireless electrical power transceiver of the second conveyance system are located proximate to one another.