Wireless Power Reception Authentication via Dual Communication Units
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Solution Overview
Problem
In wireless power transmission systems, device authentication via power transmission and reception coils can delay the start of power transmission, impairing user convenience, especially when high-speed communication capabilities are hindered by low-speed authentication processes.
Innovation Solution
A power reception apparatus with multiple communication units, including a faster communication unit for authentication, selects the appropriate unit for device authentication based on availability, ensuring efficient communication for authentication and power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If device authentication is performed via power transmission coil and power reception coil, then authentication can be completed, but the start of power transmission is delayed and user convenience is impaired
Solution Approach 1:
The patent divides the communication function into multiple independent communication units with different communication speeds. The power reception apparatus includes a first communication unit for power transmission control and a second communication unit for high-speed data exchange. By segmenting the communication function, the system can perform authentication using the faster second communication unit while maintaining the ability to control power transmission through the first communication unit.
Solution Approach 2:
The patent introduces a separate communication unit as an intermediary channel for authentication purposes. This second communication unit acts as a mediator that enables rapid exchange of authentication data between the power transmission apparatus and power reception apparatus, bypassing the speed limitations of the power transmission coil-based communication.
2Speed
If high-speed communication capability is available, then communication speed can be increased, but device complexity increases due to multiple communication units
Solution Approach 1:
The second communication unit, while primarily designed for high-speed authentication, can also be used for other data exchange purposes. This multi-functional approach allows the same hardware component to serve multiple roles, reducing the need for entirely separate dedicated authentication hardware and thereby limiting the increase in device complexity.
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 reduces authentication time and enhances user convenience by utilizing faster communication methods when available, thereby expediting the start of power transmission.
Implementation Method 1
a power transmission apparatus and a power reception apparatus that perform contactless charging
Implementation Method 2
a first communication unit configured to communicate with the power transmission apparatus, and a second communication unit configured to perform communication faster than the communication performed by the first communication unit
Data Source
AI summary
In a case where a power reception apparatus 101 is capable of communicating with a power transmission apparatus 102 using a second communication unit 207 configured to perform communication faster than communication performed by a first communication unit 206, the power reception apparatus 101 performs authentication on the power transmission apparatus 102 using the second communication unit 207. In a case where the power reception apparatus 101 is incapable of communicating with the power transmission apparatus 102 using the second communication unit 207, the power reception apparatus 101 performs the authentication on the power transmission apparatus 102 using a communication unit configured to perform communication slower than the communication performed by the second communication unit 207.