Wireless Charging Mode Switching via Proximity and Bus Voltage
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Solution Overview
Problem
Existing wireless charging devices require manual operation to switch between receiver and transmitter modes, leading to inconvenient user interaction and unnecessary power consumption due to the normally turned-on transmitter mode.
Innovation Solution
A wireless charging device and method utilizing a proximity sensor, power management circuit, and controller to automatically determine and switch between receiver and transmitter modes based on sensed object presence and voltage thresholds, eliminating the need for manual switches and reducing standby power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wireless power transmitter mode is manually turned on through a manual control interface, then the reverse charging function can be activated, but the user operation becomes inconvenient and power consumption increases when normally turned on
Solution Approach 1:
The system automatically detects the presence of a wireless power receiver and activates the transmitter mode without requiring manual user intervention. The controller monitors for foreign objects and autonomously determines when to enable wireless power transmission, making the system self-activating and eliminating the need for manual switches or control interfaces.
Solution Approach 2:
The patent replaces the manual mechanical switch or control interface with an automated sensing system. The foreign object sensor detects the presence of a wireless power receiver and triggers the transmitter mode automatically, substituting mechanical user interaction with automated electronic detection and control.
2Adaptability or versatility
If the wireless power transmitter mode is kept normally turned on, then the reverse charging function is always available, but excessive power is wasted
Solution Approach 1:
The system dynamically adjusts the transmitter mode status based on real-time detection of wireless power receivers. Rather than being statically on or off, the transmitter mode is activated only when needed (when a receiver is detected) and deactivated when not needed, optimizing both availability and energy efficiency.
Solution Approach 2:
The controller periodically monitors for the presence of wireless power receivers and activates the transmitter mode in response to detection. This periodic checking and conditional activation ensures the system is ready when needed while minimizing unnecessary power consumption during idle periods.
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 automatic activation and switching of wireless charging modes, saving power and improving user convenience by using a proximity sensor to detect objects and manage power bus voltage, thereby optimizing charging operations.
Implementation Method 1
a proximity sensor, positioned in a central area of the coil... After the proximity sensor senses an object
Implementation Method 2
a coil... The wireless power transceiver is electrically connected to the coil
Data Source
AI summary
The present disclosure provides a wireless charging switching method, which includes steps as follows. After a proximity sensor disposed in the central area of a coil senses an object, it is determined whether a power bus voltage of a wireless power transceiver electrically connected to the coil has reached a predetermined voltage value during a predetermined period, so as to determine a receiver mode or a transmitter mode for the wireless power transceiver.