Wireless Power Reception Coil Tap for Voltage Segmentation
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Solution Overview
Problem
Conventional wireless charging methods often result in significant loss and heat generation in wireless receiving chips due to voltage differences, leading to inefficient charging and compatibility issues with different wireless charging standards.
Innovation Solution
Incorporating a tap in the receiving coil and corresponding rectifying units to adjust voltage levels, allowing for reduced loss and heat generation, while enabling compatibility with multiple wireless charging standards by providing different voltage options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional wireless charging is used, then wireless charging function is provided, but significant loss and heat generation occur in the wireless receiving chip
Solution Approach 1:
The patent segments the coil output into multiple voltage paths by introducing a tap point, creating first and second voltage outputs from the same coil. This allows different voltage levels to be provided to different components (battery charging vs. wireless receiving chip), reducing power loss and heat generation in the wireless receiving chip by providing it with an appropriate lower voltage level.
2Adaptability or versatility
If conventional wireless charging is used, then wireless charging function is provided, but compatibility with different wireless charging standards is poor
Solution Approach 1:
The patent introduces a tap point in the coil to segment the output into multiple voltage levels (first voltage for battery charging, second voltage for wireless receiving chip). This segmentation enables the device to support multiple wireless charging standards with different voltage requirements without adding complex external circuitry, as the same coil structure provides multiple voltage outputs.
Solution Approach 2:
The patent makes the coil structure universal by enabling it to serve multiple functions: providing power for battery charging through the first voltage path and providing power for wireless receiving chip operation through the second voltage path. This multi-functionality allows compatibility with different wireless charging standards while maintaining a relatively simple circuit structure.
3Reliability
If wired charging is used, then stable power delivery is achieved, but charging operations become complicated
Solution Approach 1:
The patent replaces the mechanical connection (charging cable) with a wireless electromagnetic field-based power transmission system. The coil generates an electromagnetic field that can be coupled with a wireless power transmission device, eliminating the need for physical cable connection while maintaining stable power delivery through the rectifying and voltage regulation circuits.
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 solution effectively reduces heat generation and enhances charging compatibility by allowing the device to be compatible with various wireless charging schemes, improving overall charging efficiency and convenience.
Implementation Method 1
The coil includes a first end, a second end, and a tap. The coil defined by the first end and the second end is configured to provide a first voltage, and the coil defined by the first end and the tap is configured to provide a second voltage
Data Source
AI summary
A wireless power reception apparatus and a mobile terminal are provided. The wireless power reception apparatus includes the following. A coil includes a first end, a second end, and a tap. The coil defined by the first end and the second end is configured to provide a first voltage, and the coil defined by the first end and the tap is configured to provide a second voltage. A first rectifying unit coupled with the first end and the second end of the coil. A second rectifying unit coupled with the first end and the tap of the coil. A charging unit coupled with the first rectifying unit and configured to apply the first voltage to a battery for charging. A power supply unit coupled with the second rectifying unit and configured to apply the second voltage to power a wireless receiving chip.