Battery Charging-Ratio Profiling for Non-Destructive State Diagnosis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery diagnosis methods are not capable of diagnosing the state of a battery in a non-destructive manner, which can lead to potential safety issues due to gas generation and electrode deterioration.
Innovation Solution
An apparatus and method that calculates constant current and constant voltage charging capacity ratios based on battery information during a charging cycle to diagnose the battery state, allowing for non-destructive profiling and determining negative electrode stabilization or deterioration states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional battery diagnosis methods are used, then battery state information can be obtained, but the diagnosis process causes damage to the battery and reduces its lifespan
Solution Approach 1:
The patent replaces physical/chemical testing methods that directly contact and stress the battery with electrical measurement methods. By measuring voltage, current, and temperature during normal charging/discharging cycles, the system obtains diagnostic information without applying damaging mechanical or chemical stress to the battery components.
Solution Approach 2:
The patent introduces charging/discharging cycles as an intermediary process that naturally occurs during battery operation. By analyzing electrical parameters during these normal operational cycles, the system obtains diagnostic data without requiring separate testing procedures that would accelerate battery degradation.
2Reliability
If battery diagnosis is delayed, then battery safety risks increase due to gas generation and electrode deterioration, but frequent diagnosis may increase operational complexity
Solution Approach 1:
The patent makes the battery management system perform multiple functions simultaneously: it manages normal charging/discharging operations while concurrently conducting diagnostic measurements. The same sensors and control circuits used for basic battery management are utilized to extract additional diagnostic information about battery health, safety status, and degradation patterns.
Solution Approach 2:
The patent implements continuous monitoring of electrical parameters during charging/discharging cycles, with the system automatically adjusting charging parameters based on real-time battery state feedback. This closed-loop control enables ongoing safety assessment without requiring separate diagnostic interventions, maintaining high reliability while managing system complexity through integrated control.
Data Source
AI summary
An apparatus for diagnosing a battery includes a data obtaining unit configured to obtain battery information including voltage and current of a battery during a charging cycle of the battery; and a control unit configured to calculate a constant current charging capacity ratio and a constant voltage charging capacity ratio during the charging cycle based on the battery information, and diagnose a state of the battery based on the constant current charging capacity ratio and the constant voltage charging capacity ratio.