Wireless Charging Coil Overcurrent Protection via Dynamic Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless charging technologies face issues with overcurrent damage to coils when power is supplied for both charging and payment functions, and lack standardized control messaging in in-band communication schemes, leading to potential interference and coil damage.
Innovation Solution
An electronic device with distinct coils for wireless charging and payment, utilizing a processor to manage power transmission and generate payment signals, allowing for simultaneous charging and payment functions while preventing overcurrent through controlled power adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current flows into both wireless charging coil and payment coil simultaneously, then both charging and payment functions are enabled, but coil damage occurs due to overcurrent
Solution Approach 1:
The patent implements dynamic switching between charging mode and payment mode based on real-time detection of coil current levels and operational state. The system transitions from static simultaneous operation to dynamic sequential operation, adjusting the operational state of each coil based on current conditions to prevent overcurrent damage while maintaining both functions.
Solution Approach 2:
The patent employs feedback mechanisms where the system continuously monitors the current state of wireless charging and payment operations, and uses this information to control the switching between modes. The feedback loop detects when charging is active and prevents payment coil operation, or vice versa, ensuring that only one coil operates at a time to avoid overcurrent conditions.
2Productivity
If in-band communication is used for wireless charging control, then communication efficiency is improved, but standardized control messaging is lacking leading to interference
Solution Approach 1:
The patent modifies the communication protocol parameters by defining specific standardized control messages with unique identifiers and message formats for in-band communication. This standardization transforms the communication system from using generic parameters to using specifically defined parameters that prevent interference and ensure reliable control messaging while maintaining in-band communication efficiency.
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
Enables continuous and safe operation of both charging and payment functions without damaging the wireless charging or communication circuits, ensuring seamless power management and standardized control messaging.
Implementation Method 1
the wireless charging technology using an electromagnetic induction method or a resonance method has been recently distributed
Implementation Method 2
the battery of the PRU may be charged by electromagnetic induction or resonance between the transmission coil of the PTU and the reception coil of the PRU
Implementation Method 3
the electronic device may generate a payment signal in a proper frequency band, using the coil for NFC or MST mounted inside the electronic device
Data Source
AI summary
Disclosed is an electronic device. The electronic device according to an embodiment disclosed in the disclosure may include housing, a battery, a first coil receiving power transmitted wirelessly from a power transmitting unit physically coupled with an electronic device through the housing, a wireless charging circuit electrically connected to the first coil and transmitting the received power to the battery, a communication circuit generating a payment signal, using a second coil distinguished from the first coil; and a processor electrically connected to the wireless charging circuit and the communication circuit. The processor may be configured to identify an event associated with the payment signal and to transmit a first message, which is set such that the power transmitting unit adjusts transmission of power, to the power transmitting unit through the first coil based on the event. Moreover, various embodiment grasped through the disclosure are possible.