Linear Transmission Wireless Power via Electromagnetic Induction
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Solution Overview
Problem
Existing linear transmission devices face challenges in powering sensors on moving parts due to complex and dense circuit layouts, leading to issues like cable fatigue, breakage, and increased production costs and manufacturing difficulties with current wireless power solutions.
Innovation Solution
A linear transmission device with a wireless power supply module that includes a magnet-providing part and an induction coil, where the magnet-providing part generates a magnetic field parallel to the axis, inducing a current in the induction coil on the moving part, allowing for wireless power transmission without the need for extensive coil arrangements or additional batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a cable is used to supply power to sensors on the moving part, then power can be supplied to the sensors, but the cable tends to be pulled during movement causing fatigue, breakage or leakage
Solution Approach 1:
The patent extracts the power supply function from the mechanical cable connection and implements it through a wireless electromagnetic induction system. The primary coil on the base and secondary coil on the moving part enable power transmission without physical contact, eliminating cable-related reliability issues while maintaining continuous power supply to sensors during movement.
2Use of energy by moving object
If a cable is added to the existing circuit layout, then power can be supplied to the moving part, but the complex and dense circuit layout makes it difficult to add the cable
Solution Approach 1:
The patent replaces the mechanical cable-based power transmission system with an electromagnetic induction system. By using magnetic field coupling between primary and secondary coils, the system eliminates the need for physical cable routing through complex circuit layouts, significantly reducing installation complexity while maintaining power supply functionality.
3Ease of manufacture
If the region where the primary coil is disposed is reduced, then manufacturing cost and difficulty decrease, but power cannot be supplied when the secondary coil is far away from the primary coil
Solution Approach 1:
The patent employs a dynamic power supply approach where the primary coil is selectively activated based on the real-time position of the moving part. When the secondary coil enters the effective range, the corresponding primary coil is activated to provide power. This dynamic control enables the system to maintain adequate power supply range while using smaller, more cost-effective coils and eliminating the need for secondary batteries.
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 effectively supplies power to loads on moving parts in automation equipment, reducing cable-related issues and production costs, while maintaining efficient power delivery and simplifying manufacturing processes.
Implementation Method 1
The magnet-providing part is disposed on the long shaft part for providing a magnetic field, and a direction of the magnetic field is parallel to the axis. The induction coil is disposed on the moving part, and a normal vector of the induction coil is parallel to the direction of the magnetic field. When the moving part is moved along the axis, a current is induced in the induction coil through variation of the magnetic field.
Data Source
AI summary
A linear transmission device with capability of wireless power supply includes a transmission mechanism and a wireless power supply module. The transmission mechanism includes a long shaft part and a moving part. The long shaft part defines an axis. The moving part is disposed on the long shaft part in a manner that the moving part is movable along the axis. The wireless power supply module includes a magnet-providing part disposed on the long shaft part for providing a magnetic field and an induction coil disposed on the moving part. A direction of the magnetic field is parallel to the axis. A normal vector of the induction coil is parallel to the direction of the magnetic field. When the moving part is moved along the axis, a current is induced in the induction coil through variation of the magnetic field.