Wireless Power Transmission with Intermittent Load-Modulated Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transmission systems face inefficiencies due to power being transmitted to obstacles and unauthenticated devices, leading to reduced efficiency and potential heat dissipation issues when the power transmitting and receiving apparatuses are not in the appropriate positional relationship.
Innovation Solution
The implementation of intermittent power transmission with load-modulated signals and ID-based authentication to ensure power is only transmitted when the receiving apparatus is correctly positioned, using detection and extension mechanisms to optimize transmission efficiency and prevent unwanted power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous power transmission is performed after authentication, then power transfer speed is improved, but transmission efficiency deteriorates due to power being transmitted to obstacles or unauthenticated devices
Solution Approach 1:
The patent implements periodic detection of load-modulated signals during power transmission. The transmitting apparatus periodically checks for the presence of the power receiving apparatus by detecting load-modulated signals, and only transmits power when the signal is detected. This periodic verification ensures that power is transmitted only to authenticated devices in correct positional relationships, preventing energy waste on obstacles or unauthenticated devices while maintaining continuous power transfer capability.
2Reliability
If authentication is performed before power transmission, then transmission safety is improved, but transmission efficiency deteriorates due to large amounts of power being transmitted immediately after authentication
Solution Approach 1:
The patent performs preliminary detection of load-modulated signals during the authentication phase. Before initiating full power transmission, the transmitting apparatus detects whether the power receiving apparatus is present and properly positioned by checking for load-modulated signals. This preliminary verification ensures that authentication is not only based on device identity but also on correct spatial positioning, preventing subsequent energy waste while maintaining transmission safety.
3Device complexity
If power transmission is performed without detecting load-modulated signals, then device complexity is reduced, but transmission efficiency deteriorates due to power being transmitted to wrong positions
Solution Approach 1:
The patent implements a feedback mechanism where the power receiving apparatus sends load-modulated signals back to the transmitting apparatus. The transmitting apparatus detects these signals to determine whether the receiving apparatus is present and properly positioned. This feedback loop enables the transmitting apparatus to adjust its power transmission based on real-time detection results, ensuring energy is transmitted only when needed and to the correct target, thereby improving transmission efficiency without requiring complex additional hardware.
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 approach enhances wireless power transmission efficiency by ensuring power is only transmitted when the receiving apparatus is correctly positioned, reducing heat dissipation and preventing power transfer to obstacles or unauthenticated devices, thereby improving overall system performance.
Implementation Method 1
wireless power transmission using magnetic resonance
Implementation Method 2
detection means that detects a load-modulated signal received from the power receiving apparatus
Data Source
AI summary
A power transmitting apparatus that transmits power to a power receiving apparatus executes intermittent wireless transmission of power. The power transmitting apparatus operates according to one of a first power transmitting method including detecting a signal load-modulated by the power receiving apparatus using an ID in response to the transmitted power during the intermittent transmission and a second power transmitting method including transmitting the power having modulated the power according to an ID determined in advance so that the power receiving apparatus detects the ID determined in advance.