Wireless Power Control via Spreading Code Modulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless charging methods require additional resources and complexity for power control, can disrupt power transmission, and necessitate multiple base stations for charging multiple devices.
Innovation Solution
A system and method where a power receiver modulates control data with a spreading code and transmits it to a power transmitter via wireless coupling, allowing the transmitter to adjust power transmission efficiently to multiple receivers without the need for multiple base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If in-band signaling is used to communicate power control information via the same channel as power transfer, then additional communication resources and complexity are reduced, but the information transmission from mobile device adversely affects the power transmission
Solution Approach 1:
The patent introduces an intermediary modulation scheme where power control information is embedded within the power transfer signal itself through amplitude or phase modulation. This allows the same wireless channel to carry both power and control information without requiring separate communication resources, resolving the contradiction between reducing system complexity and maintaining power transmission efficiency.
Solution Approach 2:
The patent merges the power transfer function and control information transmission function into a single unified wireless channel. By combining these two functions that were previously separated in conventional out-of-band signaling, the system reduces complexity while maintaining efficient power delivery through intelligent signal design.
2Device complexity
If conventional wireless charging methods use a single base station for charging, then system complexity is reduced, but only a single device can be charged at a time
Solution Approach 1:
The patent segments the control information for multiple devices into distinct modulated signals that can be simultaneously transmitted over the same wireless channel. Each device's power control information is encoded separately, allowing the base station to serve multiple devices concurrently without requiring multiple physical base stations, thus increasing productivity while maintaining system simplicity.
Solution Approach 2:
The base station is designed with multi-functionality to handle multiple devices simultaneously through a single wireless channel. By implementing advanced signal processing capabilities including demodulation and separation of multiple device signals, the single base station achieves the functionality previously requiring multiple stations, improving charging throughput without increasing system complexity.
3Reliability
If out-of-band signaling is used for power control communication, then power transmission and control information are separated, but additional resources and complexity are required for the communication channel
Solution Approach 1:
The patent combines power transmission and control communication into a single in-band signaling channel, eliminating the need for separate communication resources. This merging approach maintains power transmission stability through proper signal design while significantly reducing system complexity by removing dedicated communication infrastructure.
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 reliable and efficient wireless power control to multiple devices using a single base station, minimizing power loss and resource usage while maintaining effective power management.
Implementation Method 1
a power pick-up unit configured to receive power from a power transmitter via a wireless coupling with the power transmitter
Implementation Method 2
The control unit is configured to adjust the power received from the power transmitter by transmitting control data to the power transmitter via the wireless coupling
Data Source
AI summary
A system for controlling wireless power transfer to mobile devices is disclosed. The system includes a power transmitter configured to transmit power via a wireless coupling to the mobile devices. Each of the mobile devices includes a power receiver configured to receive the power from the power transmitter via the wireless coupling with the power transmitter. Each power receiver is configured to transmit control data modulated with a spreading code via the wireless coupling to the power transmitter.