Wireless Power Transmitter Dual-Band Control for Receiver Compatibility
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Solution Overview
Problem
Current wireless power transfer systems require different apparatuses for in-band and out-band communication methods, leading to decreased convenience due to the need for specific devices based on communication methods used.
Innovation Solution
A power transmission apparatus equipped with both in-band and out-band communication capabilities, allowing it to decide which method to use based on device information obtained from the power reception apparatus, enabling flexible communication methods for control communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a power transmission apparatus uses a specific communication method (in-band or out-band), then control communication can be performed, but different apparatuses are needed for different communication methods, decreasing convenience
Solution Approach 1:
The power transmission apparatus is designed to support both in-band communication (using the power transmission coil at the power transmission frequency) and out-band communication (using a separate antenna at a different frequency). The communication unit can automatically select the appropriate communication method based on the capabilities of the power reception apparatus, making the apparatus universal and compatible with different communication standards without requiring different hardware devices.
2Adaptability or versatility
If a power transmission apparatus supports both in-band and out-band communication, then versatility is improved, but device complexity increases
Solution Approach 1:
The patent combines both in-band communication capabilities (power transmission coil and modulation/demodulation functions) and out-band communication capabilities (separate antenna and communication functions) into a single integrated power transmission apparatus. The communication unit includes both communication methods and can automatically select the appropriate one, merging multiple functions into one device rather than requiring separate apparatuses for each communication method.
Solution Approach 2:
The communication unit dynamically selects between in-band and out-band communication methods based on the capabilities and state of the power reception apparatus. This dynamic adaptation allows the apparatus to switch communication modes as needed, providing versatility without requiring the user to manually configure or select different hardware devices for different communication methods.
Data Source
AI summary
A power transmission apparatus has a first communication function for communicating with a power reception apparatus and a second communication function for communicating with the power reception apparatus at a radio frequency different from a radio frequency used in the first communication function, and makes a decision as to whether to use the first communication function or the second communication function in communication for controlling wireless transmission of power, the decision being made on the basis of device information obtained from the power reception apparatus through communication using the first communication function.