Quick-Charging Control via Cell Voltage Feedback
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Solution Overview
Problem
Mobile terminals face safety risks due to the lack of charging control when using high-current charging, which can lead to damage to the cell and charging circuit, or even fires, if the charging adapter is not disconnected in time when the cell is fully charged.
Innovation Solution
A quick-charging control method and system that includes a charging adapter with a second controller, a regulation circuit, and a switch circuit, which monitors the voltage value of the cell in real time, adjusts the charging current using a threshold segment table, and stops charging if abnormal conditions are detected, ensuring safe and controlled high-current charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If high-current charging is performed without monitoring, then charging time is reduced, but safety risks increase (damage to cell and charging circuit, or even fire)
Solution Approach 1:
The patent implements a feedback mechanism where the mobile terminal monitors its own charging state and sends notifications to the charging adapter. The adapter receives this feedback and adjusts its output accordingly, creating a closed-loop control system that enables safe high-current charging without requiring complex monitoring hardware in the adapter itself.
Solution Approach 2:
The mobile terminal acts as an intermediary between the charging adapter and the cell. It receives charging notifications from the adapter, monitors its own charging status, and relays control instructions back to the adapter, thereby enabling safe charging control without placing the burden of complex monitoring on the adapter.
2Reliability
If charging control is implemented, then safety is improved, but device complexity increases
Solution Approach 1:
The mobile terminal performs self-monitoring of its charging state and generates control instructions autonomously. It serves itself by detecting its own charging status and communicating this information to the charging adapter, eliminating the need for complex monitoring circuits in the adapter.
Solution Approach 2:
The mobile terminal leverages its existing processing capabilities and communication functions to perform charging monitoring and control, rather than requiring dedicated hardware. This multi-functional approach uses the terminal's general-purpose components for a specific charging control task, avoiding additional complexity.
Data Source
AI summary
A quick-charging control method and system are suitable for mobile terminals. The method includes: a first controller obtaining a voltage value of a cell, and sending the voltage value to a second controller; the second controller searching a threshold segment table to find a current regulation instruction matched with a threshold segment containing the voltage value of the cell, and sending the current regulation instruction to a regulation circuit; the regulation circuit performing a current regulation according the current regulation instruction, and outputting a power signal; the second controller sending a second switch-off instruction to the first controller and a second switch circuit respectively if second abnormal charging information is detected; and the second switch circuit, controlling the charging adapter to stop sending the power signal after the current regulation if the second switch circuit receives the second switch-off instruction.