Wireless Power Transfer Pairing via Identifier-Carrying Pulses
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Solution Overview
Problem
Existing wireless power transfer systems face issues with incorrect power transmission control when the communication units of the power transmitting and receiving apparatuses are out of range, leading to situations where power is transmitted despite the receiving apparatus being unable to receive power.
Innovation Solution
The system includes power transmitting and receiving apparatuses with communication means for exchanging identifiers through power transmission pulses and load modulation, enabling accurate identification and communication between apparatuses within a predetermined range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If communication units are provided separate from power transmission units, then communication and power transmission can be carried out independently, but power transmission control becomes incorrect when communication units are outside the power transmission range
Solution Approach 1:
The patent combines the communication function with the power transmission function by using the power transmission pulse itself as the communication medium. The power transmitting apparatus embeds its identifier in the power transmission pulse, and the power receiving apparatus extracts this identifier to establish communication. This merging ensures that communication can only occur when both apparatuses are within the power transmission range, resolving the control accuracy issue while maintaining operational independence through identifier-based recognition.
Solution Approach 2:
The power transmission pulse serves multiple functions simultaneously: it transmits power to the receiving apparatus and carries communication information (identifier) within the same signal. This multi-functionality eliminates the need for separate communication channels and ensures that power transmission and communication are inherently synchronized, solving the reliability problem while preserving the versatility of independent operation modes.
2Loss of energy
If power transmission range is limited, then power can be transmitted only to apparatuses within the range, but communication may fail when apparatuses are outside the range
Solution Approach 1:
By merging communication into the power transmission pulse, the system ensures that communication and power delivery are synchronized. The receiving apparatus can only extract the identifier and communicate when it is actually receiving power, eliminating communication attempts outside the power transmission range and preventing information loss while maintaining energy efficiency.
3Productivity
If power transmission starts without confirming receiving apparatus presence, then power transmission can begin immediately, but power is transmitted unnecessarily when receiving apparatus is outside range
Solution Approach 1:
The system performs preliminary identification by embedding and extracting the power transmitting apparatus identifier in the power transmission pulse before full power transmission begins. The receiving apparatus uses this extracted identifier to confirm the presence and identity of the transmitting apparatus, ensuring that power transmission only starts when a valid receiving apparatus is within range, thus preventing energy waste while maintaining fast transmission startup.
Solution Approach 2:
The system establishes feedback communication through the power transmission pulse, where the receiving apparatus extracts the identifier and responds to confirm receipt. This feedback mechanism ensures that power transmission is initiated only after successful identification and confirmation, preventing unnecessary power transmission while maintaining high productivity through rapid identifier-based recognition.
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 allows for more favorable power transmission control by ensuring that power is only transmitted to identified and connected receiving apparatuses, preventing unnecessary power transfer and improving efficiency.
Implementation Method 1
extracting means for extracting the power transmitting apparatus identifier from the power transmission pulse received by the power receiving means
Implementation Method 2
load modulation means for transmitting a power receiving apparatus identifier unique to the power receiving apparatus to the power transmitting apparatus using load modulation on a power transmission pulse from the power transmitting apparatus
Data Source
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AI summary
In a power transfer system, a power transmitting apparatus includes: power transmission means for wirelessly transmitting power to a power receiving apparatus disposed within a predetermined power transmission range; transmission means for transmitting a power transmitting apparatus identifier unique to the power transmitting apparatus using a power transmission pulse performed by the power transmission means; and power transmitting apparatus communication means for communicating wirelessly with the power receiving apparatus, and a power receiving apparatus includes: power receiving means for receiving power wirelessly from the power transmitting apparatus; extracting means for extracting the power transmitting apparatus identifier from the power transmission pulse received by the power receiving means; and power receiving apparatus communication means for communicating wirelessly with a power transmitting apparatus that transmits a communication packet containing the power transmitting apparatus identifier extracted by the extracting means.