Wireless Charging Base With Magnetic Shielding for Multi-Device Range
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless electrical charging systems using near-field magnetic coupling are limited in that they require devices to be in physical contact, can only charge one device at a time, and do not allow devices to be used while charging due to weak signal strength and inefficient antenna design.
Innovation Solution
A wireless electrical power transmission system with a base that uses magnetic field shielding and repeaters to increase the magnitude and directionality of the magnetic field, enabling multiple devices to be charged simultaneously and at a distance from the base, while allowing them to be used during charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If prior art charging systems use NFMC with direct physical contact, then charging efficiency is maintained, but only one device can be charged at a time and the device cannot be used during charging
Solution Approach 1:
The patent divides the charging function into multiple independent transmitting antennas instead of using a single antenna. Each antenna can independently charge one or more devices, enabling simultaneous charging of multiple devices without requiring them to be in direct physical contact with a single charging surface.
Solution Approach 2:
The patent transitions from a single-plane contact charging approach to a three-dimensional spatial charging approach. By using multiple antennas positioned at different locations and orientations, the system can charge multiple devices simultaneously in different spatial positions, allowing devices to be used during charging without direct surface contact.
2Length of stationary object
If prior art systems require direct physical contact for charging, then magnetic field coupling is sufficient, but the charging distance is limited to zero
Solution Approach 1:
The patent changes the operating parameters of the transmitting antennas, including operating frequency, power levels, and antenna configurations. By optimizing these parameters, the system achieves effective magnetic field coupling at distances greater than zero while maintaining acceptable energy transfer efficiency.
Solution Approach 2:
The transmitting antennas are designed to serve multiple functions: they can charge multiple devices simultaneously, operate at different power levels, and maintain effective coupling at various distances. This multi-functionality allows the system to achieve both extended charging distance and maintained energy efficiency.
3Productivity
If multiple transmitting antennas are used to charge multiple devices simultaneously, then productivity increases, but device complexity and system cost increase
Solution Approach 1:
The patent combines multiple transmitting antennas into a single integrated charging base unit. This merging approach allows multiple devices to be charged simultaneously while maintaining a compact, unified system structure rather than requiring separate charging units for each device.
Solution Approach 2:
The charging base with multiple transmitting antennas is designed as a universal charging station that can handle multiple devices of different types and sizes. This multi-functional design increases productivity without proportionally increasing system complexity, as the base serves all charging functions centrally.
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 allows for efficient, simultaneous wireless charging of multiple devices at a distance from the charging base, enabling continued use of devices during charging and improving the range and efficiency of energy transfer.
Implementation Method 1
Near field magnetic coupling (NFMC) is a commonly employed technique to wirelessly transfer electrical energy. In near field magnetic coupling (NFMC) an oscillating magnetic field generated by a transmitting antenna passes through a receiving antenna that is spaced from the transmitting antenna, thereby creating an alternating electrical current that is received by the receiving antenna.
Implementation Method 2
the wireless electrical power transmitting antenna is configured with one or more magnetic field shielding embodiments that increase the magnitude of the magnetic field that emanates from the antenna
Implementation Method 3
the wireless electrical power transmitting antenna is configured with one or more magnetic field shielding embodiments that control the direction in which the magnetic field emanates from the antenna
Data Source
AI summary
A wireless electrical energy transmission system is provided. The system comprises a wireless transmission base configured to wirelessly transmit electrical energy or data via near field magnetic coupling to a receiving antenna configured within an electronic device. The wireless electrical energy transmission system is configured with at least one transmitting antenna and a transmitting electrical circuit positioned within the transmission base. The transmission base is configured so that at least one electronic device can be wirelessly electrically charged or powered by positioning the at least one device external and adjacent to the transmission base.