Wireless Charging Receive Coil State Switching for Inductance Control
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Solution Overview
Problem
Existing wireless charging technologies for terminal devices have a fixed charging state, leading to poor wireless charging performance and an inability to meet user requirements effectively.
Innovation Solution
A wireless charging control method and circuit that includes a wireless charging receive coil with multiple operating states, where the inductance values differ, and a control module that adjusts the coil's operating state based on the induced voltage to optimize charging efficiency and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed charging state is used in wireless charging, then the device structure is simple, but the wireless charging performance is poor and cannot meet user requirements
Solution Approach 1:
The patent implements dynamic switching between multiple operating states (first operating state with first inductance value, second operating state with second inductance value) based on real-time charging conditions. The control module dynamically adjusts the coil configuration by switching between different operating states, transforming the static fixed charging state into a dynamic adaptive system that responds to changing wireless charging conditions, thereby improving charging performance without excessive complexity
Solution Approach 2:
The patent changes the inductance value parameter of the wireless charging coil by switching between different operating states. Each operating state corresponds to a specific inductance value, and the control module selects the appropriate inductance value based on charging requirements. This parameter change enables adaptation to different wireless charging scenarios, resolving the contradiction between simple structure and poor performance
2Productivity
If multiple operating states with different inductance values are implemented, then charging efficiency and flexibility are improved, but the device complexity increases
Solution Approach 1:
The patent segments the wireless charging coil into multiple operating states, where each state corresponds to a specific inductance value and charging scenario. The coil is divided into configurable segments that can be independently controlled through the control module, allowing selective activation of different operating states based on charging requirements. This segmentation enables efficient charging across different conditions while maintaining manageable system complexity through modular control
Solution Approach 2:
The wireless charging coil is designed with multi-functionality, serving multiple purposes through different operating states. The same physical coil structure performs different functions by switching between first and second operating states, each optimized for specific charging scenarios. This universal design improves charging efficiency across diverse applications without requiring separate dedicated coils for each function, thereby limiting the increase in device complexity
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 approach allows for flexible adjustment of the charging state to enhance charging efficiency and degree of freedom, thereby improving user experience and meeting user requirements by dynamically controlling the wireless charging performance.
Implementation Method 1
obtaining an induced voltage of the wireless charging receive coil
Data Source
AI summary
A wireless charging control method applied to a wireless charging control circuit in a terminal device, and the wireless charging control circuit includes a wireless charging receiving coil, the wireless charging receiving coil has at least two operating states, and inductance values of the wireless charging receiving coil in the operating states are different from each other. The method includes: obtaining an induced voltage of the wireless charging receiving coil; and controlling, based on the induced voltage, the wireless charging receiving coil to operate in a corresponding operating state.