Wireless Charging Standby Control for Software Detachment Sensing
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Solution Overview
Problem
Existing wireless charging systems face challenges in accurately determining the attachment or detachment of electronic devices during wireless charging standby mode, especially when a dedicated attachment/detachment sensing circuit is absent or malfunctioning, leading to potential continuous charging or display errors.
Innovation Solution
An electronic device equipped with a processor and wireless power reception circuit that determines charging-related information and transmits signals to control the charging process, using software-based detachment sensing to identify attachment or detachment states and manage wireless charging standby mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dedicated attachment/detachment sensing circuit is provided, then the charging state can be accurately identified, but the device complexity increases
Solution Approach 1:
The patent replaces the hardware-based attachment/detachment sensing circuit with a software-based detection mechanism. The processor determines attachment status by analyzing charging-related information and transmitting designated signals to the external electronic device, eliminating the need for separate physical sensing hardware while maintaining accurate detection capability.
Solution Approach 2:
The processor is designed to perform multiple functions: it determines charging-related information, detects attachment/detachment states, transmits control signals, and manages wireless charging standby mode. This multi-functionality consolidates what would traditionally require separate dedicated circuits into a single processing unit, reducing overall device complexity.
2Use of energy by moving object
If the power receiving circuit is deactivated in wireless charging standby mode, then energy consumption is reduced, but the ability to sense ping signals is lost
Solution Approach 1:
The system implements a feedback mechanism where the processor monitors charging-related information and determines attachment status even when the power receiving circuit is deactivated. The processor can detect changes in charging state by analyzing received information and transmitting appropriate signals, enabling continuous monitoring without requiring the power receiving circuit to remain active.
Solution Approach 2:
The processor performs preliminary detection of attachment status by determining first situation information about the electronic device during wireless charging standby mode. This allows the system to identify detachment events before they would affect charging operations, enabling proactive response while keeping the power receiving circuit deactivated for energy savings.
3Loss of energy
If wireless charging standby mode is entered, then unnecessary charging is prevented, but detachment detection becomes difficult without a sensing circuit
Solution Approach 1:
The patent replaces the mechanical/hardware sensing circuit with a software-based detection system. The processor determines attachment status by analyzing charging-related information and transmitting designated signals to the external electronic device, providing reliable detachment detection without requiring dedicated physical sensing components during standby mode.
Solution Approach 2:
The system uses its own processing capabilities to detect attachment/detachment events during standby mode. The processor monitors charging-related information and determines attachment status using the existing wireless communication infrastructure, eliminating the need for separate sensing services or components.
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 accurate identification of attachment or detachment states without a dedicated sensing circuit, improving the efficiency and user experience of wireless charging by preventing unnecessary charging and correcting display indications.
Implementation Method 1
Wireless power transfer technologies may include a magnetic induction type
Implementation Method 2
Wireless power transfer technologies may include a magnetic induction type and a magnetic resonance type
Data Source
AI summary
An electronic device may comprise: a battery; a charging circuit; a wireless power receiver circuit configured to acquire transmitted power wirelessly output from an external electronic device; and a processor. The processor may be configured to control the electronic device to: charge the battery through the charging circuit using received power acquired through the wireless power receiver circuit; identify at least one piece of information related to the charging, while the charging operation is performed; transmit a designated signal corresponding to suspension of the transmitted power to the external electronic device such that the external electronic device enters a wireless charging standby mode, in which the external electronic device holds the operation of outputting the transmitted power, at least partially based on the at least one piece of information; identify first situation information regarding the electronic device during the wireless charging standby mode; identify second situation information regarding the electronic device, in response to identifying the first situation information; and sense the electronic device being detached from the external electronic device based on the electronic device corresponding to the first situation information and the second situation information.