Wireless Charging Transmitter Mode Switching With One PWM
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Solution Overview
Problem
Conventional wireless charging systems are limited in their ability to efficiently switch between different operational modes and require additional hardware resources to generate control signals, such as multiple pulse width modulators.
Innovation Solution
The implementation of a logic device that can generate multiple control signals based on a single pulse width modulator, allowing for dynamic switching between operational modes such as duty control, frequency control, and voltage control, without the need for additional synchronization logic or hardware resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pulse width modulators are used to generate control signals for different operational modes, then the system can maintain multiple charging modes, but the hardware complexity and resource requirements increase
Solution Approach 1:
A single pulse width modulator is designed to perform multiple functions by generating control signals for different operational modes (duty cycle control, frequency control, voltage control) through configurable parameters, eliminating the need for separate modulators for each mode and reducing overall hardware complexity
Solution Approach 2:
The system dynamically switches between different operational modes by reconfiguring the parameters of the single pulse width modulator in real-time, allowing the charging transmitter to adapt to different charging requirements without requiring dedicated hardware for each mode
2Reliability
If additional synchronization logic is added to manage mode switching, then operational mode switching can be coordinated, but the device complexity increases
Solution Approach 1:
The synchronization and mode switching control functions are merged into the single pulse width modulator, which internally coordinates the generation of control signals for different operational modes without requiring external synchronization logic, thereby reducing overall system complexity while maintaining reliable mode transitions
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 efficient and seamless switching between operational modes during wireless charging operations, reducing hardware requirements and improving charging efficiency by intelligently selecting and configuring modes as needed.
Implementation Method 1
transmitters and receivers including, among other things, inductive elements configured for charging operations
Data Source
AI summary
Systems, methods, and devices are described to improve wireless charging devices. Systems include a power inverter configured to generate a power transfer signal based, at least in part, on a plurality of transmission parameters, a transmission element configured to wirelessly transmit the power transfer signal, and a controller configured to determine a power transfer mode used by the power inverter based, at least in part, on a plurality of operational parameters and a plurality of configuration parameters.