Wireless Charging Voltage Boosting for High-Power Heat Control
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Solution Overview
Problem
Existing wireless charging systems generate excessive heat during high-power charging, leading to instability and reduced efficiency due to increased operating temperatures and current paths.
Innovation Solution
The system increases the input voltage for wireless charging, utilizing a boost circuit to output a higher voltage (e.g., 30V) that reduces the current and path loss, while the terminal steps down this voltage to match battery charging requirements, incorporating a heat dissipation fan to manage temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wireless charging system operates at high power, then the charging speed and energy transfer rate improve, but excessive heat is generated leading to system instability and reduced efficiency
Solution Approach 1:
The patent changes the operating voltage parameter from conventional levels to higher voltage (e.g., 30V or above) during wireless charging. This parameter change allows the system to maintain high power output while reducing current, thereby minimizing I²R losses and heat generation in the coils and circuitry, resolving the contradiction between charging speed and temperature control
Solution Approach 2:
The system dynamically adjusts the operating voltage based on real-time conditions such as coil coupling, distance, and temperature. The voltage is increased during high-power charging phases and adjusted downward when temperature thresholds are approached, enabling the system to maintain optimal performance while preventing excessive heat accumulation
2Loss of energy
If the operating voltage is increased to reduce current and path loss, then heat generation decreases and charging efficiency improves, but additional voltage conversion components and control circuits are required
Solution Approach 1:
The patent integrates multiple functions into the voltage conversion and control system. The same boost converter and control circuitry that manage voltage transformation also perform current regulation, temperature monitoring, and communication functions. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in system complexity despite the added voltage conversion requirements
Solution Approach 2:
The patent combines the high-voltage wireless charging circuitry with the existing charging control system. The boost converter, voltage detection circuits, and control logic are integrated into a unified charging management architecture, allowing the high-voltage functionality to be added without proportionally increasing overall 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 approach effectively reduces heat generation and improves charging efficiency by minimizing current and maintaining system stability during high-power charging.
Implementation Method 1
The transmitting coil is configured to perform a wireless charging capability output at the second voltage
Implementation Method 2
The wireless receiving coil is configured to receive a charging signal from an apparatus for wireless charging
Data Source
AI summary
An apparatus for wireless charging includes a charger, a wireless transmitting controller and a transmitting coil. The charger is configured to output a first voltage to the wireless transmitting controller. The wireless transmitting controller is configured to boost the first voltage to obtain a second voltage, and the second voltage is greater than the first voltage. The transmitting coil is configured to perform a wireless charging capability output at the second voltage. A terminal includes a wireless receiving coil, a wireless receiving controller and a step-down processor. The wireless receiving coil receives the charging signal from an apparatus for wireless charging. The wireless receiving controller processes the charging voltage to obtain a third voltage of direct current; and the step-down processor steps down the third voltage to obtain a fourth voltage within a charging range acceptable by the terminal and charge a battery of the terminal by the fourth voltage.