Wireless Power Transmitter Control Chip Integration
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Solution Overview
Problem
Existing wireless power transmission systems, such as those adhering to the Qi Standard, have complex circuit designs and high costs, making them unsuitable for widespread use in household and industrial applications due to large control module sizes and low integration levels, limiting their application to expensive devices like mobile phones.
Innovation Solution
A wireless power transmission system featuring a power transmitter with a wave generating circuit generating a square wave control signal and a switching control drive circuit, integrated with a MOSFET switching circuit on a single chip, and a power receiver with rectifying and filtering circuits, enabling efficient electromagnetic energy conversion and transmission with reduced module size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Qi standard wireless power transmission system is used, then wireless charging function is achieved, but circuit complexity increases and cost increases
Solution Approach 1:
The patent merges the H-bridge switching circuit, dead-zone control logic, and power management functions into a single integrated control chip. This consolidation eliminates the need for separate external logic control chips and reduces the number of discrete components, thereby achieving wireless charging functionality while significantly reducing circuit complexity and system cost.
Solution Approach 2:
The control chip is designed with universal functionality that can be applied to various wireless power transmission applications beyond just mobile phone charging. The chip handles multiple functions including H-bridge control, dead-zone management, and power regulation, making it adaptable to different power levels and application scenarios, thus reducing the need for specialized custom chips.
2Power
If H-bridge chip design with external logic control chips is used, then power switching control is achieved, but control circuit size increases and cost increases
Solution Approach 1:
The patent integrates the H-bridge switching control logic and dead-zone control functions directly into the power management chip. This merging eliminates the need for separate external logic control chips, thereby maintaining effective power switching control while significantly reducing the overall control circuit size and component count.
3Manufacturing precision
If Qi standard with specialized custom chips is used, then precise control is achieved, but manufacturing cost increases
Solution Approach 1:
The patent employs a standardized, mass-producible control chip design that can be manufactured using conventional semiconductor fabrication processes. This approach replaces expensive specialized custom chips with a more economical standardized design that maintains sufficient control precision for wireless power transmission applications, thereby significantly reducing manufacturing costs.
Solution Approach 2:
The control chip is designed with universal applicability across different wireless power transmission scenarios. By creating a standardized multi-functional chip that can handle various power levels and applications, the patent eliminates the need for expensive application-specific custom chips, thereby reducing manufacturing costs while maintaining adequate control precision.
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 system achieves reduced size and cost of control modules, improved integration, and effective non-contact power and signal transmission, enabling broader applications in conventional closed-loop systems like refrigerators and other appliances.
Implementation Method 1
a power transmitter adapted to convert an input DC power into an electromagnetic energy
Implementation Method 2
a power receiver electromagnetically coupled with the power transmitter and adapted to receive an electromagnetic energy output from the power transmitter
Data Source
Figure 1
Figure 2~3
AI summary
Disclosed is a wireless power transmission device comprising a power transmitter adapted to convert an input DC power into an electromagnetic energy,and a power receiver electromagnetically coupled with the power transmitter and adapted to receive an electromagnetic energy output from the power transmitter. The power transmitter includes a wave generating circuit adapted to generate a square wave control signal having a predetermined frequency according to the input DC power, a switching control drive circuit configured to convert the input DC power into an alternating electrical signal according to the received square wave control signal, and a first coil coupling circuit electrically configured to convert the alternating electrical signal output from the switching control drive circuit into the electromagnetic energy. In the disclosure, through employing a universal control drive chip, the cost of control modules is greatly reduced and the entire size of the control modules is also reduced.