Wireless Charging Power Mode Switching for Heat-Limited Fast Charging
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Solution Overview
Problem
Current wireless charging technology faces challenges in quickly coordinating a reasonable charging mode adaptation between the wireless charging base, the power adapter, and the device to be charged, leading to slow charging speeds and severe heat generation.
Innovation Solution
A wireless charging apparatus that includes a charging interface, a wireless transmitting circuit, and a control module. The control module determines the appropriate wireless charging mode through communication with the device to be charged and the power supply apparatus, adjusting the output power and voltage to optimize charging speed while avoiding excessive power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wireless charging base uses high output power to charge the device, then the charging speed is improved, but heat generation becomes severe
Solution Approach 1:
The patent implements dynamic switching between first and second wireless charging modes based on real-time detection of charging conditions. The control module adjusts the output power dynamically - using high power in the first mode for fast charging when conditions permit, and switching to low power in the second mode when heat generation becomes excessive, thereby resolving the contradiction between charging speed and heat control
Solution Approach 2:
The control module continuously detects charging conditions and uses this feedback to determine whether to switch between charging modes. When heat generation exceeds a threshold or other abnormal conditions are detected, the system switches from high-power first mode to low-power second mode, creating a closed-loop control system that balances charging speed and thermal management
2Productivity
If the wireless charging base coordinates charging mode adaptation quickly, then the charging efficiency is improved, but the control process complexity increases
Solution Approach 1:
The patent establishes predetermined first and second wireless charging modes with defined power levels and switching conditions. The control module is pre-programmed with the logic to detect specific conditions and switch modes accordingly, eliminating the need for complex real-time calculations and reducing control process complexity while maintaining high charging efficiency
Solution Approach 2:
The system simplifies control by changing discrete parameters - switching between two predefined charging modes with different power levels rather than continuously adjusting power. This parameter-based approach reduces the complexity of the control process while still enabling efficient charging adaptation to different conditions
3Productivity
If the wireless charging base uses continuous high power output, then the charging speed is maintained, but energy waste increases
Solution Approach 1:
The control module periodically detects charging conditions and switches between high-power and low-power modes based on detected conditions such as battery charge level, device temperature, and power availability. This periodic monitoring and switching prevents continuous high-power operation, reducing energy waste while maintaining optimal charging speed when conditions permit
Solution Approach 2:
The system applies high power only when necessary and when conditions allow, rather than continuously. By using high power in the first mode only during periods when the device can accept it and when it benefits charging speed, and switching to low power in the second mode when conditions deteriorate, the system avoids excessive energy consumption while maintaining charging efficiency during critical periods
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 enables quick adaptation of charging modes, enhancing charging speed and reducing heat generation by dynamically adjusting output power and voltage based on real-time conditions, thereby optimizing energy use.
Implementation Method 1
a wireless transmitting circuit configured to convert electric energy received through the charging interface and outputted from a power supply apparatus into an electromagnetic signal and transmit the electromagnetic signal to wirelessly charge a device to be charged
Data Source
AI summary
Disclosed are a wireless charging apparatus, a wireless charging method, and a wireless charging system. The wireless charging apparatus includes: a charging interface; a wireless transmitting circuit configured to convert electric energy outputted from a power supply apparatus into an electromagnetic signal and transmit the electromagnetic signal to wirelessly charge a device to be charged; and a control module configured to determine a wireless charging mode to be adopted as a first wireless charging mode or a second wireless charging mode through communication between the wireless transmitting circuit and the device to be charged, periodically detect whether a condition for exiting the first wireless charging mode has occurred when in the first wireless charging mode, and adjust a current wireless charging mode to the second wireless charging mode in response to detecting that the condition for exiting the first wireless charging mode has occurred.