Movable Electrical Socket With Resonant Inductive User Tracking
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Solution Overview
Problem
Existing energy supply systems for portable electrical devices are limited by the need for stationary charging, which restricts mobility and requires accurate positioning of the charger and device.
Innovation Solution
A system comprising a mobile power transmitter unit behind a wall cover and a mobile power receiver unit on the front side, connected by a resonant inductive coupling, allowing the receiver to move with the user while maintaining a continuous power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If standard inductive coupling is used for wireless power transmission, then the system can provide wireless charging, but the transmission efficiency is low and energy loss is high
Solution Approach 1:
The patent changes the operating parameters by using resonant inductive coupling at specific frequencies (6.78 MHz according to the Industrial, Scientific and Medical band) to achieve both high transmission efficiency and low energy loss, resolving the contradiction between efficiency and energy loss
2Reliability
If resonant inductive coupling is used for wireless power transmission, then transmission efficiency is high, but the charger and vehicle must be positioned relatively accurately
Solution Approach 1:
The patent makes the receiver unit movable along the wall surface, transforming the static positioning requirement into a dynamic tracking system where the receiver can be repositioned to maintain optimal alignment with the transmitter, thereby reducing the need for precise initial positioning
3Reliability
If high-performance resonant energy transfer devices are used, then wireless charging is achieved, but the vehicles cannot move during charging
Solution Approach 1:
The patent enables the receiver unit to move along the wall surface during charging operations, allowing users to adjust the receiver position to follow their movement patterns while maintaining continuous power supply, thus achieving both high efficiency and mobility
4Manufacturing precision
If a stationary charger is used, then accurate positioning is required, but user mobility is restricted
Solution Approach 1:
The patent transforms the stationary charger into a movable receiver unit that can be repositioned along the wall surface, allowing the charging point to dynamically adapt to user movement while maintaining precise alignment with the transmitter for efficient power transfer
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, in-motion operation of portable electrical devices with increased mobility, as the receiver can follow the user's movement, eliminating the need for a fixed charging position.
Implementation Method 1
Two types of inductive coupling can be used for short-range wireless transmission of electricity: simple (standard) inductive coupling or resonant inductive coupling. Resonant inductive coupling operates with higher efficiency than standard inductive coupling (here the transmission efficiency is about 95%) and is effective at relatively longer distances
Data Source
AI summary
The system (100) for positioning a movable electrical socket (133) comprises at least one planar support element; on a first side of each support element, a rail system comprising fixed rails extending in a first direction and at least one second rail extending in a second direction perpendicular to the first direction and connected to the first rails, wherein the at least one second rail is motor-driven and movable in the first direction relative to the first rails; a power transmission transmitter (120) connected to each of the second rails, each of said transmitters (120) is motor-driven and movable in the second direction along said second rail, and which transmitter (120) comprises a magnetic retainer (122); on each side of each support element opposite the first side thereof, at least one energy receiving receiver (130) comprising an electrical socket (133) and wirelessly connected to the transmitter (120) by resonant inductive coupling for receiving electrical energy to power an electrical appliance connected to said electrical socket (133), said receiver (130) being in a magnetic engagement through a magnetic retainer (132) with the magnetic retainer (122) of the transmitter (120) and is movable in a fixed position relative to said movable transmitter (120); a power transfer control unit (140) for supplying electrical power to the transmitter (120); a motion control unit (150) for operating the motor (107; 121) of the at least one second rail and the associated transmitter (120). The system further comprises a camera system (160) comprising cameras (162) for monitoring the movement of a user in the space defined by the second side of the at least one planar support element; a central computer (170) for receiving signals from the cameras (162) and determining at least the spatial position of the user on the basis of images provided by the camera system (160), the central computer (170) is configured to generate motion control signals for the motors (107; 121) of the second rail and the transmitter (120) based on at least the spatial position of the user and to send said motion control signals to said motion control unit (150) for moving the transmitter (120) into a target position according to the spatial position of the user, and further to send power control signals to the power transfer control unit (140). The central computer (170) is programmed to drive the motors (107; 121) of a second rail (106) and a transmitter (120) for moving the transmitter (120) along the support element so that the receiver (130) magnetically attached to the transmitter (120) always stay within a predetermined distance from the user.