Switching Charger Current Prediction for Wired and Wireless Power
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Solution Overview
Problem
Existing electronic devices face challenges in seamlessly operating charging functions across wired and wireless ports, particularly in managing power differences between charging and discharging operations.
Innovation Solution
The electronic device incorporates a wireless power transmission/reception circuit, a wired power transmission/reception port, a load switch, a switching charger, a battery, and a processor. The processor predicts the current at the output end of the wireless power transmission/reception circuit based on input currents, voltages, and efficiency, enabling efficient power management across different ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a switching charger is used to enable multi-use charging functions (wired charging, wireless charging, power supply to external devices), then the adaptability and versatility of the electronic device is improved, but the device complexity and control difficulty increase
Solution Approach 1:
The power management system is segmented into distinct functional modules: a switching charger for battery charging/discharging, a load switch for wired port control, and a wireless power transmission/reception circuit for wireless power control. Each module operates independently with dedicated control, simplifying the overall management of multiple charging functions while maintaining high adaptability.
2Productivity
If the processor predicts current based on multiple parameters (input current, voltage, efficiency) to optimize power management, then the productivity and energy efficiency are improved, but the measurement and calculation complexity increase
Solution Approach 1:
The processor implements a feedback-based current prediction mechanism that continuously monitors multiple parameters (input current, voltage, switching charger efficiency) and adjusts the predicted output current accordingly. This closed-loop control enables optimized power management while managing calculation complexity through real-time parameter adjustment rather than complex theoretical modeling.
Solution Approach 2:
The system performs preliminary current prediction calculations based on efficiency data stored in a lookup table before actual power transmission occurs. This pre-calculation approach allows the processor to quickly determine appropriate current levels without performing complex real-time calculations during operation, improving both speed and energy efficiency.
Data Source
AI summary
According to embodiments, an electronic device may comprise a wireless power transmission/reception circuit, a wired power transmission/reception port, a load switch electrically connected to the wired power transmission/reception port, a switching charger electrically connected to the load switch and the wireless power transmission/reception circuit, a battery electrically connected to the switching charger, and a processor. The processor may be configured to, based on a first current input to an input end of the load switch, a first voltage at an output end of the load switch, a second voltage of the battery, a second current between the switching charger and the battery, and efficiency by the switching charger, predict a third current at an output end of the wireless power transmission/reception circuit.