Quick Charging Handshake Control to Prevent Mobile Terminal Overheating
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Solution Overview
Problem
Current quick charging methods for mobile terminals often result in overheating and potential burnout due to increased output current without considering the terminal's endurance, leading to reduced lifespan.
Innovation Solution
A communication-based method between the power adapter and mobile terminal to negotiate and determine if quick charging can be safely activated, setting the output current based on the terminal's capabilities to prevent overheating.
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 may overheat and burnout, reducing its lifespan
Solution Approach 1:
The patent applies preliminary action by having the mobile terminal send a negotiation message to the power adapter before charging begins. This message includes the terminal's maximum supported charging current. The power adapter receives this information in advance and adjusts its output current accordingly, preventing overheating before it occurs. This pre-negotiation mechanism ensures safe quick charging without compromising terminal lifespan.
2Loss of time
If the output current is increased without considering terminal endurance, then charging time is reduced, but heating and burnout phenomena occur
Solution Approach 1:
The patent implements feedback by having the mobile terminal provide information about its maximum supported charging current to the power adapter through a negotiation message. The power adapter uses this feedback to adjust its output current to an appropriate level that enables quick charging without causing overheating or burnout. This closed-loop information exchange ensures safe and efficient charging.
Data Source
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AI summary
In embodiments of the present disclosure, after a mobile terminal has recognized a type of a power adapter, the mobile terminal actively initiates a quick charging request, and negotiates with the power adapter via handshake communication to determine charging parameters. The power adapter charges a battery of the mobile terminal via a multi-stage constant current mode. Thus, safety of a quick charging process can be ensured.