Charging Method Extends Voltage Range Beyond USB PD 3.1 Limits
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Solution Overview
Problem
Existing mobile devices face challenges in achieving ultra-high voltage charging due to limitations in battery voltage and charging current, preventing the realization of maximum charging power beyond 55 W with USB PD 3.1 fast charging protocols.
Innovation Solution
A charging method that extends the value range of charging parameters by sending messages with enhanced basic charging parameters based on operating parameters requested by the terminal, allowing for charging beyond the preset thresholds, and adjusting power supply capabilities accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If USB PD 3.1 fast charging protocol is adopted with 48V ultra-high voltage, then charging power can reach up to 240W, but terminal products cannot realize this charging power due to battery voltage limitations (merely about 4.45V)
Solution Approach 1:
The charging process is divided into multiple voltage stages. The system segments the charging voltage into different levels (e.g., 11V, 20V, and extended beyond 20V) that can be progressively applied to the battery through voltage conversion, allowing the terminal to accept higher charging power while maintaining compatibility with its lower battery voltage
Solution Approach 2:
The patent extends the charging voltage parameter range beyond the standard USB PD 3.1 protocol limits. By modifying the voltage parameter to exceed 20V and potentially reach higher levels, the system enables charging power to surpass the conventional 55W limitation while adapting to terminal battery requirements through controlled voltage conversion
2Power
If dual-cell series connection is adopted to enable battery voltages around 9V, then charging power can reach about 100W, but charging current is limited to 5A
Solution Approach 1:
The patent extends the charging voltage parameter range beyond the standard USB PD 3.1 protocol limits. By modifying the voltage parameter to exceed 20V and potentially reach higher levels, the system enables charging power to surpass the conventional 55W limitation while adapting to terminal battery requirements through controlled voltage conversion
3Adaptability or versatility
If charging voltage is limited to about 11V with maximum charging current of 5A, then USB PD 3.1 protocol compatibility is maintained, but maximum charging power is limited to 55W
Solution Approach 1:
The patent extends the charging voltage parameter range beyond the standard USB PD 3.1 protocol limits. By modifying the voltage parameter to exceed 20V and potentially reach higher levels, the system enables charging power to surpass the conventional 55W limitation while adapting to terminal battery requirements through controlled voltage conversion
Data Source
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AI summary
The present application provides a charging method, an electronic device and a computer-readable medium. The charging method comprises: sending a first message to a charger, the first message comprising a first basic charging parameter and a second basic charging parameter, the first basic charging parameter being determined according to a first operating charging parameter requested by a terminal, the second basic charging parameter being determined according to a second operating charging parameter requested by the terminal, and a maximum value of the first operating charging parameter being greater than a first preset threshold value, and/or a maximum value of the second operating charging parameter being greater than a second preset threshold value; and performing charging at the first operating charging parameter and the second operating charging parameter until a full charge capacity is reached.