Battery Charging State Detection for Abnormal Charge Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional charging methods for electronic devices based solely on battery voltage can lead to incomplete charging, charging delays, and overheating due to non-ideal charging situations caused by incomplete connector insertion or changes in battery charging characteristics.
Innovation Solution
An electronic device that includes a detection circuit to measure battery voltage and output voltage of the charging circuit, allowing the processor to determine normal or abnormal charging states by comparing these values and adjusting charging modes accordingly, such as switching to constant current or constant voltage based on specific thresholds and impedance measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If charging control is based only on battery voltage, then charging control is simple, but charging accuracy deteriorates leading to incomplete charging or overheating
Solution Approach 1:
The patent implements feedback control by continuously monitoring both battery voltage and charging circuit output voltage, comparing the difference between these values to detect abnormal charging states, and adjusting charging parameters accordingly. This dual-voltage feedback mechanism resolves the contradiction by providing accurate charging detection without excessive complexity.
Solution Approach 2:
The patent replaces simple voltage-threshold-based mechanical control with an intelligent detection system that uses processor-based comparison logic and adaptive charging mode switching. This substitution enables more precise charging control while maintaining manageable system complexity through software-based decision making.
2Device complexity
If charging parameters are fixed based on initial battery characteristics, then device design is simple, but charging performance deteriorates as battery characteristics change over time
Solution Approach 1:
The patent implements dynamic charging parameters that automatically adapt to changing battery characteristics. The system switches between different charging modes (constant current, constant voltage, tapered charging) based on real-time detection of battery state and charging circuit performance, resolving the contradiction between simple parameter management and adaptability to battery aging.
Solution Approach 2:
The patent changes charging parameters (current, voltage, charging mode) based on detected battery state and the difference between battery voltage and charging circuit output voltage. This dynamic parameter adjustment enables the system to adapt to battery characteristic changes over time while maintaining straightforward control logic.
3Productivity
If charging continues without detecting abnormal states, then charging speed is maintained, but device safety deteriorates due to overheating or damage
Solution Approach 1:
The patent performs preliminary detection of abnormal charging states by continuously monitoring the voltage difference between the battery and charging circuit before harmful effects occur. The system detects connector insertion issues and battery abnormalities early, allowing preventive action to be taken before overheating or damage occurs, thus maintaining safety without significantly impacting charging speed.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Disclosed is an electronic device which can control battery charging on the basis of the state of a battery. The electronic device of the present disclosure can check the voltage of a battery and the output voltage of a charging circuit, while the battery is being charged in a constant current state, and determine the state of the battery on the basis of at least the voltage of the battery and the output voltage of the charging circuit. Other various embodiments identified in the description are possible.