Wireless Charging Step-Down Circuit for Heat and Efficiency Control
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Solution Overview
Problem
Conventional wireless charging methods are inefficient, leading to heat accumulation and design challenges due to low power conversion efficiency, which can cause malfunctions and safety issues such as overheating and potential battery explosion.
Innovation Solution
A device-to-be-charged with a wireless receiving circuit, charging management circuit, and step-down circuit that receives a wireless charging signal, performs constant voltage and current control, and uses a step-down circuit with higher efficiency to decrease output voltage, reducing heat generation and improving charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional wireless charging is used, then wireless charging capability is provided, but charging efficiency is poor and heat accumulation occurs
Solution Approach 1:
The patent segments the charging control function into two independent parts: a charging management circuit that performs constant voltage/current control and a separate step-down circuit that performs voltage reduction. This segmentation allows each circuit to operate at its optimal efficiency point, with the step-down circuit handling the power-intensive voltage reduction task separately from the control circuit, thereby improving overall charging efficiency and reducing energy loss.
2Reliability
If conventional wireless charging is used, then wireless charging capability is provided, but heat accumulation and safety issues occur
Solution Approach 1:
By separating the step-down function into an independent circuit, the patent reduces the thermal load on the charging management circuit. The step-down circuit is designed to handle the power dissipation separately, preventing heat accumulation in the control circuitry and improving overall charging safety and reliability.
3Ease of operation
If wired charging is used, then charging stability is provided, but operation complexity increases due to cable connection requirements
Solution Approach 1:
The patent replaces the mechanical cable connection system with a wireless electromagnetic induction system. The wireless receiving circuit receives power wirelessly through electromagnetic fields, eliminating the need for physical cable connections and reducing operational complexity while maintaining charging stability through controlled electromagnetic coupling.
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 effectively reduces heat generation and enhances charging efficiency by separating the step-down function and constant voltage/current control, leading to improved safety and performance in wireless charging.
Implementation Method 1
a wireless receiving circuit, configured to receive a wireless charging signal to charge a battery
Data Source
AI summary
Provided are a device to-be-charged and a charging control method. The device to-be-charged can include a wireless receiving circuit, a charging management circuit, and a step-down circuit. The wireless receiving circuit can be configured to receive a wireless charging signal to charge a battery. The charging management circuit can be configured to perform constant voltage control and/or constant current control on charging of the battery. The step-down circuit is configured to decrease an output voltage of the wireless receiving circuit or an output voltage of the charging management circuit.