Battery Charging Control Circuit Overcurrent Protection
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Solution Overview
Problem
Existing battery charging technologies fail to provide effective overcurrent and overvoltage protection during regular or quick charging, risking battery damage.
Innovation Solution
A battery charging control device with a main control circuit that monitors charging voltage and current, sending a switch-off instruction to prevent damage by disconnecting the communication interface when thresholds are exceeded, incorporating a quick charging switch circuit to manage higher currents and voltages safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If charging current is enhanced for quick charging, then charging time is reduced, but battery may be damaged due to overcurrent
Solution Approach 1:
The patent implements preliminary protective actions by establishing overcurrent and overvoltage protection mechanisms before charging begins. The control circuit continuously monitors charging parameters and preemptively switches off the charging port when thresholds are approached, preventing battery damage before it occurs.
Solution Approach 2:
The patent employs feedback control by continuously detecting charging current and voltage through the main control circuit. The system uses this real-time feedback to dynamically adjust charging parameters and trigger protective switch-off actions when abnormal conditions are detected, ensuring safe quick charging.
2Productivity
If charging voltage is increased for quick charging, then charging time is reduced, but battery may be damaged due to overvoltage
Solution Approach 1:
The patent establishes overvoltage protection as a preliminary safety measure by setting voltage thresholds and implementing monitoring mechanisms before charging begins. The control circuit preemptively prevents overvoltage conditions from developing, protecting the battery while enabling faster charging.
Solution Approach 2:
The system continuously monitors charging voltage through feedback mechanisms in the main control circuit. When voltage approaches dangerous levels, the feedback loop triggers automatic switch-off of the charging port, preventing overvoltage damage while maintaining efficient charging operation.
3Reliability
If conventional constant voltage mode is used, then battery safety is maintained, but charging time is extended
Solution Approach 1:
The patent transforms the static constant voltage charging mode into a dynamic charging system that can adapt between different charging speeds. The control circuit dynamically adjusts charging parameters based on real-time conditions, switching between safe constant voltage mode and faster charging modes with protective oversight, optimizing both safety and speed.
Data Source
AI summary
The present disclosure relates to the technical field of charging. A terminal and a battery charging control device and method are provided. The battery charging control device including a battery connector, a main control circuit and a quick charging switch circuit is adopted. During the regular charging or the quick charging, the main control circuit performs a data communication with the external power adapter via the communication interface, and obtains a charging voltage and a charging current for the battery; if the charging voltage is greater than a voltage threshold and/or the charging current is greater than a current threshold, the main control circuit sends a charging switch-off instruction, such that the controller controls the communication interface to switch off; if the charging voltage is less than or equal to the voltage threshold and the charging current is less than or equal to the current threshold, the main control circuit continues to obtain the charging voltage and the charging current.