Wireless Power Profile Messaging for Stable Multi-Mode Charging
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Solution Overview
Problem
Existing wireless power transfer systems lack a standardized mechanism for wireless power transmitter (PTx) and receiver (PRx) devices to explicitly specify their operating modes and states, leading to inefficiencies and potential spurious operations during power transfer, especially when devices with different standards or profiles interact.
Innovation Solution
The implementation of a profile-aware communication mechanism between PTx and PRx devices, allowing them to exchange power profiles corresponding to different operating modes such as gain measurement, nominal, and light load modes, enabling dynamic adjustment of power transfer based on battery state of charge and thermal conditions, and facilitating interoperability between profile-aware and non-profile aware devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless power transfer systems use multiple operating modes (gain measurement, nominal, light load) without standardized communication, then power transfer flexibility is improved, but device compatibility and operational reliability deteriorate due to spurious operations
Solution Approach 1:
The patent implements standardized communication protocols that enable dynamic parameter changes between different operating modes (gain measurement, nominal, light load). The system uses defined message exchanges to negotiate and transition between power transfer parameters, ensuring reliable mode switching while maintaining adaptability to different power requirements and device states.
2Device complexity
If wireless power transmitter and receiver devices operate without explicit mode specification, then device complexity is reduced, but power transfer efficiency and precision deteriorate due to lack of coordinated control
Solution Approach 1:
The patent implements self-service mechanisms where the wireless power transmitter and receiver automatically negotiate and coordinate their operating modes through standardized message exchanges. The devices autonomously determine the appropriate power transfer mode based on their respective states (battery charge level, thermal conditions) and communicate this information using defined protocols, eliminating the need for complex external control while maximizing power transfer efficiency.
3Measurement precision
If wireless power transfer systems implement comprehensive communication protocols for mode selection, then operational precision and interoperability are improved, but communication overhead and processing time increase
Solution Approach 1:
The patent implements preliminary action by establishing standardized communication protocols and message formats before actual power transfer operations begin. The system pre-defines operating modes (gain measurement, nominal, light load) and their corresponding communication sequences, allowing devices to quickly negotiate and transition between modes using predetermined message structures, thereby reducing real-time communication overhead while maintaining precise mode control.
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 solution enhances the efficiency and interoperability of wireless power transfer by allowing devices to adjust power transfer modes based on battery state and thermal conditions, preventing overheating and ensuring seamless operation across different standards, thereby improving charging efficiency and device compatibility.
Implementation Method 1
A wireless power transmitter can include a wireless power transfer coil, an inverter that receives an input DC voltage and outputs an AC voltage to the wireless power transfer coil so as to deliver power to a wireless power receiver
Data Source
AI summary
A wireless power transmitter can include a wireless power transfer coil, an inverter that receives an input DC voltage and outputs an AC voltage to the wireless power transfer coil so as to deliver power to a wireless power receiver, and a communications module configured to communicate with the wireless power receiver by transmitting and receiving messages requesting, selecting, or confirming one of a plurality of power profiles of the wireless power transmitter, the plurality of power profiles corresponding to a gain measurement mode, a nominal mode that delivers a relatively higher power level, and a light load mode that delivers a relatively lower power level.