Battery Protection Circuit Prevents Abnormal Switching
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Solution Overview
Problem
Existing battery protection systems in vehicles and energy storage systems face issues with abnormal on/off operations when detecting battery problems, leading to incomplete protection of loads and potential damage due to repeated power interruptions.
Innovation Solution
A system and method that compare current battery state information with reference information to control a power supplying unit, blocking power from a battery in a problem state and maintaining a stop state until a resume signal is received, using a protection circuit with a state information obtaining unit, power supplying unit, and control unit to diagnose and manage battery states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery protecting system uses an IC with embedded power supply and protection functions to block power from a battery with problems, then the load is protected from overvoltage and overcurrent, but the system experiences abnormal on/off operations when a battery state problem is detected, causing incomplete protection and potential damage
Solution Approach 1:
The system performs preliminary diagnosis of battery state before power supply interruption. The comparing unit compares current state information (voltage, temperature) with reference information in advance, and only blocks power supply when abnormality is confirmed, preventing premature or incorrect power cutoff and ensuring stable operation during normal conditions
Solution Approach 2:
The system implements continuous feedback monitoring of battery state parameters. The state information obtaining unit continuously acquires battery data, the comparing unit constantly compares it with reference values, and the protection circuit unit adjusts power supply based on comparison results, creating a closed-loop control system that prevents abnormal on/off operations by responding only to confirmed abnormalities
2Reliability
If the battery protecting system continuously monitors battery state values to prevent overcharge and overdischarge, then the unit cell is protected from inflation and damage, but the system complexity increases due to multiple monitoring functions
Solution Approach 1:
The protection circuit unit is designed with multi-functionality, integrating both power supply control and battery protection functions. The same unit that controls power supply also monitors battery state and prevents overcharge/overdischarge, eliminating the need for separate monitoring circuits and reducing overall system complexity while maintaining comprehensive protection
Solution Approach 2:
The patent merges the power supply control function and battery protection function into a single integrated protection circuit unit. This consolidation combines multiple monitoring and control operations into one unified device, reducing the number of components and simplifying the system architecture while ensuring reliable cell protection
Data Source
AI summary
The present invention relates to a system and a method of protecting a battery, and particularly to a system and a method of protecting a battery, which compare current state information of a battery with reference state information and control an operation of a power supplying unit that supplies power supplied from the battery to a load based on a result of the comparison in order to block power supplied from the battery that is in a problem state, thereby protecting a load from the battery in the problem state.