Wireless Charging Receiver Circuit With Adjustable Voltage Gain
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Solution Overview
Problem
Existing wireless charging systems have a fixed voltage gain, leading to poor flexibility during battery charging.
Innovation Solution
A wireless charging reception circuit is introduced, comprising a first and second resonance circuit, a rectifying circuit, and a control circuit. The control circuit can adjust the rectifying circuit to rectify signals from either resonance circuit or a series resonance circuit, allowing for flexible voltage gain adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed voltage gain configuration is used in the wireless charging system, then the system structure is simple, but the flexibility during battery charging is poor
Solution Approach 1:
The patent applies dynamics by making the voltage gain adjustable rather than fixed. The control circuit dynamically switches between different resonance circuits (first resonance circuit with lower voltage gain, second resonance circuit with higher voltage gain) based on battery charging needs. This allows the system to adapt to different charging stages and requirements, transforming a static system into a dynamic one that can respond to changing conditions.
Solution Approach 2:
The patent changes the voltage gain parameter by selecting different resonance circuits. The first resonance circuit provides a first voltage gain while the second resonance circuit provides a second voltage gain (higher than the first). The control circuit adjusts which circuit is active, thereby changing the system's voltage gain parameter to match different charging requirements, resolving the contradiction between simplicity and flexibility.
2Adaptability or versatility
If multiple resonance circuits are used to enable flexible voltage gain adjustment, then the flexibility during battery charging is improved, but the device complexity increases
Solution Approach 1:
The patent segments the resonance system into multiple independent resonance circuits, each with different voltage gain characteristics. The first resonance circuit and second resonance circuit are separate modules that can be independently controlled. This segmentation allows flexible combination and selection of different circuits based on charging needs, achieving adaptability while managing complexity through modular design.
Solution Approach 2:
The control circuit is designed with multi-functionality, capable of controlling both the first resonance circuit and the second resonance circuit. It can selectively activate different circuits based on battery charging requirements, making a single control unit serve multiple functions. This universal control approach enables voltage gain adjustment without proportionally increasing control system 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 configuration enables flexible adjustment of voltage gains in the wireless charging system, improving its flexibility and efficiency during battery charging.
Implementation Method 1
the first resonance circuit receives an electric signal transmitted by a primary resonance circuit through an electromagnetic induction mode and outputs the received electric signal to the rectifying circuit; the second resonance circuit receives an electric signal transmitted by the primary resonance circuit through an electromagnetic induction mode
Data Source
AI summary
A wireless charging reception circuit, a method, electronic device and a wireless charging system are described. In the wireless charging reception circuit, a control circuit may control a rectifying circuit to rectify electric signals transmitted by a first resonance circuit and/or a second resonance circuit. Since the rectifying circuit outputs different voltages after rectifying the electric signals transmitted by the different resonance circuits, the control circuit may controls the rectifying circuit to rectify the electric signals transmitted by the different resonance circuits to adjust the output voltages of the rectifying circuit.