Battery Protection via Full Charge Capacity Comparison
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Solution Overview
Problem
Existing battery protection systems fail to detect abnormal states in a timely manner, leading to safety issues such as explosions and heat damage, despite the use of conventional intercepting devices.
Innovation Solution
An apparatus and method that includes a fuse connected to a circuit path with a controller to calculate and compare actual and reference full charge capacity values, controlling a fuse control switch to intercept current flow if the actual value falls below the reference, thereby preventing overcharging or overdischarging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fuse-based protecting devices are used to intercept charging/discharging current, then fire prevention is improved, but abnormal states are not detected in early stage leading to delayed protection
Solution Approach 1:
The controller performs preliminary detection of battery abnormal states by monitoring parameters such as voltage, current, and temperature before critical failure occurs. The fuse control switch is prepared in advance and activated only when predetermined conditions are met, enabling early intervention rather than reactive protection.
Solution Approach 2:
The system continuously monitors battery parameters and provides feedback to the controller. When the controller detects that parameters exceed predetermined thresholds, it triggers the fuse control switch to open the circuit. This closed-loop feedback mechanism enables real-time detection and response to abnormal states.
2Measurement precision
If fuse control switch is added to selectively open or close operating current, then protection precision is improved, but device complexity increases
Solution Approach 1:
The controller serves multiple functions: it monitors battery parameters, determines abnormal states based on predetermined conditions, and controls the fuse control switch. This multi-functionality reduces the need for separate dedicated components for each function, thereby limiting the increase in device complexity while maintaining high detection precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables early detection of abnormal battery states, preventing fires and improving safety by intercepting current flow when the actual full charge capacity drops below a predetermined threshold.
Implementation Method 1
controlling the fuse control switch according to the comparison result to melt and cut the fuse
Data Source
AI summary
An apparatus protects a battery by comparison of full charge capacity. The apparatus includes a fuse connected on a circuit path along which a charging or discharging current flows, a fuse control switch for selectively opening or closing an operating current applied to the fuse, and a controller for calculating an actual value and a reference value of a full charge capacity of a battery, comparing the actual value with the reference value, and then controlling the fuse control switch according to the comparison result to melt and cut the fuse. Thus, an abnormal state of a battery may be found and controlled at an early stage, so it is possible to prevent any problem such as firing and thus improve the safety of a battery.