Mobile Terminal Quick Charging with Multi-Stage Current Control
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Solution Overview
Problem
Current quick charging methods for mobile terminals often result in overheating or burnout due to increased output current without considering the terminal's endurance, reducing its lifespan.
Innovation Solution
A method and system that negotiates with the mobile terminal via bidirectional communication to determine if the quick charging mode can be adopted, adjusting output voltage and current in a multi-stage constant current mode to ensure safe and efficient charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the output current of the power adapter is directly increased to achieve quick charging, then the charging speed is improved, but the mobile terminal overheats or burns out, reducing its lifespan
Solution Approach 1:
The power adapter dynamically adjusts its output current based on real-time feedback from the mobile terminal. The system transitions from static high current output to dynamic current regulation, switching between different current levels according to the terminal's thermal state and charging needs, thereby achieving both quick charging and thermal safety
Solution Approach 2:
The mobile terminal monitors its own thermal state and battery status, then feeds this information back to the power adapter through bidirectional communication. The power adapter uses this feedback to adjust its output current, creating a closed-loop control system that prevents overheating while maintaining fast charging efficiency
2Loss of time
If the output current is increased for quick charging, then the charging time is reduced, but the mobile terminal experiences overheating or burnout
Solution Approach 1:
The power adapter implements periodic current adjustment cycles, alternating between high current charging phases and lower current cooling phases. This periodic action allows the battery to charge quickly during safe intervals while preventing sustained overheating, effectively reducing overall charging time without causing thermal damage
Solution Approach 2:
The system takes preliminary anti-action by proactively reducing current before critical overheating occurs. Through continuous monitoring and predictive control, the power adapter anticipates thermal buildup and adjusts current levels in advance, preventing overheating rather than reacting to it after the fact
Data Source
AI summary
In embodiments of the present disclosure, after a mobile terminal recognizes a type of a power adapter, the mobile terminal transmits indication information to the power adapter. The indication information is configured to indicate that the mobile terminal has recognized the type of the power adapter and instruct the power adapter to activate a quick charging process. The power adapter then negotiates with the mobile terminal via the quick charging process to determine charging parameters, and charges a battery of the mobile terminal in a multi-stage constant current mode.