Battery Management Using Charging Current Diagnosis
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Solution Overview
Problem
Existing battery management technologies are inefficient in diagnosing battery defects and distinguishing between defective and potentially restorable batteries, leading to prolonged diagnosis times and unnecessary battery waste.
Innovation Solution
An apparatus and method for managing batteries that utilize a sensor device to measure charging currents and a processor to determine battery health by obtaining a current representative value during a diagnosis period, allowing for quicker diagnosis and identification of restorable batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery diagnosis is performed after charging the battery, then battery defects can be detected, but the diagnosis time is prolonged
Solution Approach 1:
The patent performs battery diagnosis during the charging process itself rather than waiting until charging is complete. The processor monitors charging current in real-time during charging to determine battery health status, enabling preliminary detection of defects before charging finishes. This eliminates the need for separate post-charging diagnosis steps, thereby reducing total diagnosis time while maintaining detection accuracy.
2Reliability
If batteries with deteriorated performance are diagnosed as defective, then safety is ensured, but restorable batteries are wasted unnecessarily
Solution Approach 1:
The patent uses charging current as a diagnostic parameter to distinguish between permanently defective batteries and those with temporary performance deterioration. By monitoring the magnitude and characteristics of charging current during the charging process, the system can identify batteries that show improved current values indicating restoration potential. This allows the system to differentiate between truly defective batteries (safety hazard) and restorable ones (temporary issue), preventing unnecessary disposal while maintaining safety standards.
Data Source
AI summary
Disclosed are an apparatus for managing a battery and a method thereof. The apparatus includes a sensor that measures a current of the battery, and a processor that is connected to the sensor to determine whether the battery is defective. The processor may obtain a charging current value per unit time through the sensor during a diagnosis period during which the battery is charged, obtain a current representative value of the charging current values, and determine whether the battery is defective based on the current representative value.