Dynamic Charge Capacity Control for Portable Terminal Battery Safety
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Solution Overview
Problem
Portable terminals cannot charge batteries when the charge cable's capacity does not match the terminal's pre-set capacity, limiting the use of various charge cables.
Innovation Solution
An apparatus and method that includes a detector to identify the charge cable's capacity and a charge IC to reset the terminal's charge capacity, allowing power supply control according to the detected cable capacity, enabling charging with cables of different capacities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the portable terminal uses a pre-set charge capacity to control charging, then the battery safety is improved, but the adaptability to various charge cables deteriorates
Solution Approach 1:
The charge capacity parameter is made dynamic rather than fixed. The controller dynamically adjusts the charge capacity based on detection results, switching between a first charge capacity (when cable capacity matches terminal capacity) and a second charge capacity (when cable capacity exceeds terminal capacity). This dynamic adjustment resolves the contradiction by adapting the safety parameter to different cable types while maintaining battery protection.
Solution Approach 2:
The patent changes the charge capacity parameter according to the detected cable capacity. When the cable capacity is detected to be greater than the terminal capacity, the controller changes the charge capacity parameter from the first value to the second value. This parameter change allows the system to maintain safety while accommodating various cable specifications.
2Reliability
If the portable terminal interrupts charging when voltage or current exceeds threshold, then the charging electronics protection is improved, but the charging continuity deteriorates
Solution Approach 1:
The controller continuously detects the voltage and current during charging and provides feedback to adjust the charge capacity parameter. When voltage or current exceeds thresholds, the feedback mechanism triggers a charge capacity adjustment rather than immediate charging interruption. This feedback-based adjustment maintains electronics protection while preserving charging continuity by adapting the charging parameters to safe operating levels.
Solution Approach 2:
The charge capacity parameter dynamically adjusts in response to real-time voltage and current conditions. Instead of static threshold-based interruption, the system dynamically modifies the charge capacity to maintain safe operating parameters, ensuring both electronics protection and charging continuity.
Data Source
AI summary
An apparatus and method enable a charging power supply for a battery charge in a portable terminal regardless of the charge capacity of a charge cable for an external power supply. The apparatus for controlling a charge current in the portable terminal includes a detector for detecting power supplied to a battery and a charge capacity of a charge cable when the charge cable is connected to supply external power, and a charge integrated circuit (IC) for resetting a charge capacity of the portable terminal according to the capacity of the charge cable and controlling the power supplied to the battery according to an operation of the detector, when the charge capacity of the charge cable detected by the detector is not equal to the charge capacity of the portable terminal.