Wireless Power Transmission Control for Unnecessary Authentication Reduction
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Solution Overview
Problem
In wireless power transmission systems, when a power transmission apparatus performs high-power charging, it inadvertently performs authentication processing on nearby uncharged power reception apparatuses due to the wider power transmission range, leading to unnecessary power transmission and increased power consumption.
Innovation Solution
A power transmission apparatus with a control unit that receives notification signals from power reception apparatuses, performs authentication and power transmission only if the received power reception value is sufficient, and skips unnecessary authentication and power transmission for apparatuses with insufficient values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the power transmission apparatus performs high-power charging transmission, then the power transmission range is wider and more power reception apparatuses can be reached, but the apparatus performs authentication processing on power reception apparatuses that do not need charging, leading to unnecessary power consumption
Solution Approach 1:
The system performs preliminary detection power transmission before authentication to identify which power reception apparatuses actually need charging. This preliminary action filters out apparatuses that are merely within range but not requiring power, preventing unnecessary authentication and high-power transmission to them.
Solution Approach 2:
The system applies different power transmission modes (detection, authentication, high-power charging) to different power reception apparatuses based on their individual needs. Each apparatus receives appropriate treatment based on local conditions rather than uniform high-power transmission to all detected apparatuses.
2Reliability
If the power transmission apparatus performs authentication processing on all detected power reception apparatuses, then no apparatus is missed, but processing time and power consumption increase due to unnecessary authentication
Solution Approach 1:
The system performs preliminary detection and evaluation of power reception apparatuses before initiating authentication. This preliminary action identifies which apparatuses warrant authentication, eliminating unnecessary authentication processes while ensuring all genuine candidates are authenticated.
Solution Approach 2:
The system performs authentication only on a subset of detected power reception apparatuses - specifically those that pass the preliminary detection criteria. This partial action avoids the excessive authentication of all detected apparatuses, reducing time loss while maintaining reliability for genuine charging candidates.
Data Source
AI summary
In a case where a notification signal is received from a second power reception apparatus different from a first power reception apparatus while power transmission is performed to the first power reception apparatus, power transmission to the second power reception apparatus is performed according to a result of negotiation with the second power reception apparatus if a power reception value corresponding to information included in the notification signal received from the second power reception apparatus is a sufficient value. The second power reception apparatus is not targeted for the power transmission if the power reception value corresponding to the information included in the notification signal received from the second power reception apparatus is not a sufficient value.