Wireless Power Transmission for Sealed Spaces
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Solution Overview
Problem
Existing power supply methods for closed spaces, such as glove boxes and clean rooms, face challenges including the need for complex sealing structures, limited power supply due to photovoltaic cell output, and frequent battery replacements, which compromise seal integrity and require opening the space for maintenance.
Innovation Solution
A wireless power transmission device with a power transmission wall that allows electromagnetic fields to pass, featuring inner and outer retainers to support coils for continuous power supply without compromising seal integrity, even under pressure changes, and enabling light-blocking applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a connecting terminal is used to supply electric power from the outside to the inside, then electric power can be supplied into the closed space, but a through-hole must be formed in the wall which complicates the sealing structure and degrades sealing performance over time
Solution Approach 1:
The invention extracts the power transmission function from the wall structure by using wireless power transmission through electromagnetic fields. The power supply device and power receiving device are positioned on opposite sides of the wall, transmitting power wirelessly without requiring any physical connection or through-hole in the wall, thereby eliminating the complex sealing structure around through-holes
Solution Approach 2:
The invention replaces the mechanical connection system (connecting terminals passing through the wall) with an electromagnetic field-based wireless power transmission system. This substitution eliminates the need for physical penetrations through the wall while maintaining power supply functionality
2Power
If a photovoltaic cell is used to supply electric power by light from the outside, then electric power can be supplied into the closed space, but the power output is limited and the wall must allow light transmission which is not suitable for light-blocking applications
Solution Approach 1:
The invention replaces the optical-based photovoltaic power generation system with an electromagnetic induction-based wireless power transmission system. This allows power to be transmitted through electromagnetic fields without requiring light transmission through the wall, making it applicable to both light-transmissive and light-blocking closed spaces
3Power
If a battery is installed in the inside to supply electric power, then electric power can be supplied into the closed space, but the battery capacity is limited requiring periodic replacement which compromises seal integrity
Solution Approach 1:
The invention enables continuous power supply through wireless electromagnetic transmission from an external power source to a power receiving device inside the closed space. This eliminates the need for periodic battery replacement, maintaining continuous operation without compromising seal integrity or requiring opening of the closed space
Solution Approach 2:
The power receiving device inside the closed space automatically receives power wirelessly from the external power supply device, eliminating the need for human intervention to replace batteries. The system serves itself by continuously receiving power without requiring opening or maintenance inside the sealed environment
4Reliability
If the inside of the closed space is pressurized or depressurized, then the wall may be displaced which affects power supply, but wireless power transmission through electromagnetic fields remains stable under pressure changes
Solution Approach 1:
The invention replaces mechanical power transmission components that are sensitive to pressure-induced displacement with wireless electromagnetic field-based power transmission. Electromagnetic fields can penetrate the wall without being affected by pressure changes or wall displacement, maintaining reliable power supply under varying pressure conditions
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, long-term power supply to closed spaces without degrading seal integrity and allows for light-blocking configurations, maintaining seal integrity and operational efficiency.
Implementation Method 1
an inner retainer fixed to an inner surface of the wall and supporting a power-receiving coil in proximity to the power transmission wall; and an outer retainer fixed to an outer surface of the wall and configured to supporting a power-supplying coil in proximity to the power transmission wall, wherein the electric power is wirelessly transmitted between the power-supplying coil and the power-receiving coil
Data Source
AI summary
A wireless power transmission device includes an inner retainer fixed to an inner surface of a wall and supporting a power-receiving coil in proximity to a power transmission wall, and an outer retainer fixed to an outer surface of the wall and supporting a power-supplying coil in proximity to the power transmission wall, wherein the electric power is wirelessly transmitted between the power-supplying coil and the power-receiving coil.