Coil-in-Coil Wireless Charging Interface for Multi-Protocol Pairing
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Solution Overview
Problem
Current technologies require different protocols, charging schemes, and cabling interfaces for pairing and charging electronic accessories with radios, leading to complexity and portability issues due to dedicated mechanical and electrical arrangements.
Innovation Solution
A coil-in-coil wireless charging interface structure that enables both wireless charging and expanded communication system functionality, allowing multiple technologies like RFID, NFC, and BLUETOOTH pairing to operate through a single coil, simplifying the interface and enabling interchangeability of accessories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different protocols and cabling interfaces are used for each accessory technology, then each technology can operate reliably, but the device complexity and portability are worsened
Solution Approach 1:
The patent implements a universal coil-in-coil wireless charging interface that can handle multiple accessory technologies (RFID, NFC, BLUETOOTH pairing, charging) through a single unified interface, eliminating the need for separate dedicated interfaces for each technology while maintaining reliable operation of all functions
Solution Approach 2:
The patent merges previously separate charging, RFID reading, NFC communication, and BLUETOOTH pairing functions into a single coil-in-coil wireless interface, combining multiple protocols and functions that previously required separate mechanical and electrical arrangements into one integrated system
2Manufacturing precision
If dedicated mechanical alignment interfaces are provided for each charging and communication technology, then each function can be performed accurately, but the product real estate and portability are reduced
Solution Approach 1:
The unified coil-in-coil interface serves multiple functions (charging, RFID, NFC, pairing) through a single mechanical interface, eliminating the need for multiple dedicated mechanical alignment interfaces while maintaining precise coupling through the universal design
Solution Approach 2:
The patent employs a nested coil structure where coils are arranged concentrically within the same spatial footprint, allowing multiple functions to be performed through a single interface without requiring additional mechanical space for separate interfaces
3Reliability
If separate interfaces are used for charging and communication functions, then each function can be optimized independently, but the overall device portability and ease of operation are worsened
Solution Approach 1:
The single coil-in-coil interface provides unified management for all accessory functions, allowing users to simply place accessories on the charging surface without needing to connect different cables or interfaces for charging, RFID, NFC, or pairing operations
Solution Approach 2:
The system automatically detects and activates the appropriate protocol (charging, RFID, NFC, pairing) based on the accessory placed on the interface, eliminating the need for users to manually select or configure different interfaces for different functions
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
The coil-in-coil structure provides a unified interface for charging, secure pairing, and proximity communication, reducing complexity and enhancing portability by using a single coil for multiple functions, supporting various accessory technologies and devices.
Implementation Method 1
A communication device, such as a portable radio, comprises a transmit coil
Implementation Method 2
an accessory comprising a receive coil, is insertable into the radio to form the coil-in-coil structure
Data Source
AI summary
A coil-in-coil structure (100) is formed within two devices (106, 108). The coil-in-coil structure (100) enables both wireless charging and secure pairing between the two devices (106, 108). The coil-in-coil structure (100) permits expanded wireless functionality using a single transmit coil (104) at a host radio device (108) and a receive coil (102) at an accessory device (106). A plurality of different accessory devices (606) can be interchangeably accommodated via a single host port (114) of the radio device (108).