Wireless Power Transmission via Segmented MOSFET Arrays
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Solution Overview
Problem
Conventional high-power wireless induction power supply systems face issues such as safety risks due to heat generation, high manufacturing costs, inefficient power transmission, and fixed output energy, which are not adjustable to load conditions, leading to low performance and energy loss.
Innovation Solution
A high-power wireless induction power supply system using a power-supplying module with multiple parallel MOSFET arrays and a low-impedance resonant loop, along with a microprocessor for software-controlled PWM signal output, allows for efficient power transmission and voltage regulation, eliminating the need for DC-DC Step-Down devices and minimizing waste heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional high-power wireless induction power supply systems use high-frequency power switches and resonance capacitors, then high-power output is achieved, but manufacturing cost becomes extremely high
Solution Approach 1:
The patent divides the power transmission system into multiple independent low-power transmission units instead of using a single high-power transmission unit. Each unit operates at standard frequency with conventional components, making them commercially available and cost-effective. Multiple units work in parallel to achieve the required total power output, thus avoiding the need for expensive custom high-frequency high-power components.
Solution Approach 2:
The system dynamically controls the number of active transmission units based on the power requirements of the load. The microprocessor monitors the power demand and activates or deactivates transmission units accordingly, optimizing both power delivery and energy efficiency while using standard-frequency components that are easier and cheaper to manufacture.
2Ease of operation
If conventional systems use DC-DC Step-Down IC for voltage regulation, then output voltage is adjusted to demand level, but energy loss and waste heat occur during switching operations
Solution Approach 1:
The patent replaces the mechanical switching-based DC-DC Step-Down IC voltage regulation with a wireless control mechanism. The microprocessor controls the number and operation of transmission units to directly match the power output to the load demand, eliminating the need for post-transmission voltage step-down conversion and associated energy losses.
Solution Approach 2:
The system uses the power-receiving end's own microprocessor to monitor its power demand and communicate this information back to the power-supplying end. The supplying end then self-adjusts the number of active transmission units to match the receiving end's requirements, creating a self-regulating system that avoids energy loss.
3Device complexity
If fixed output electrical energy is used in high-power wireless induction systems, then system design is simplified, but performance becomes low due to inability to adjust subject to load condition
Solution Approach 1:
The patent implements dynamic power adjustment by enabling the microprocessor to control the number of active transmission units based on real-time load conditions. This allows the system to adapt its power output from zero to maximum in discrete steps, providing versatility while maintaining relatively simple architecture through software-based control rather than complex hardware switching networks.
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
The solution enhances safety and efficiency by dynamically adjusting power output based on load conditions, reducing power loss, and minimizing manufacturing costs while maintaining high-performance power transmission.
Implementation Method 1
a power-supplying coil array (152) adapted for receiving power supply from the second driver circuit (14) and generating power energy
Implementation Method 2
a power supply resonance circuit (15) electrically connected to the first driver circuit (13) and consisting of a capacitor array (151) and a power-supplying coil array (152)
Data Source
AI summary
A power transmission method used in a high-power wireless induction power supply system consisting of a power-supplying module and a power-receiving module is disclosed. The power-supplying module regulates its output energy by means of frequency modulation and driving power adjustment, enabling the energy to be received by the power-receiving module and transmitted through a power-receiving coil array and a primary resonant capacitor and a secondary resonant capacitor of power-receiving resonance circuit, a synchronizing rectifier, a low-power voltage stabilizer, a high-frequency filter capacitor, a first power switch, a low-frequency filter capacitor and a second power switch of a filter circuit for output to an external apparatus.