Battery Pack Heating Diagnosis for Authenticity and Fault Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for determining whether a battery pack is genuine or non-genuine may lead to erroneous results due to similar internal resistance values, necessitating a more accurate differentiation method.
Innovation Solution
A determination method involving the measurement of time-dependent changes in temperature and output voltage of the battery pack while heating, with reference values to distinguish between genuine and non-genuine products based on thermal stability and voltage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If internal resistance measurement method is used to determine authenticity, then determination can be performed based on electrical property, but measurement precision deteriorates when non-genuine products have similar internal resistance values to genuine products
Solution Approach 1:
The patent changes the measurement parameters from static internal resistance to dynamic temperature and voltage changes during heating. By measuring how temperature evolves over time and how output voltage changes with temperature, the method captures thermal behavior characteristics that differ between genuine and non-genuine products, resolving the precision issue when internal resistance values are similar.
Solution Approach 2:
The patent transitions from a single-dimensional electrical measurement (internal resistance) to multi-dimensional measurements including temperature change over time, output voltage change over time, and their relationships. This adds temporal and thermal dimensions to the determination process, enabling differentiation when electrical properties alone are insufficient.
2Measurement precision
If heating method is used to determine authenticity through temperature measurement, then measurement precision improves for detecting abnormalities, but use of energy increases due to heating process
Solution Approach 1:
The patent converts the potential harmful effect of heating (energy consumption) into a beneficial diagnostic tool. By deliberately heating the battery pack and measuring its thermal response, the method uses the heating process itself to reveal authenticity characteristics. The energy input is justified by the high precision gained in detecting thermal abnormalities that would indicate non-genuine products.
3Reliability
If multiple parameters (temperature and output voltage) are measured simultaneously, then reliability of determination improves, but device complexity increases
Solution Approach 1:
The patent makes the measurement system multi-functional by using temperature and voltage measurements to achieve multiple objectives: detecting authenticity, identifying abnormalities in electrodes/electrolytes/ separators, and characterizing thermal behavior. These measurements serve universal purposes for both authentication and diagnostic functions, justifying the increased device complexity through enhanced reliability and versatility.
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 method enables accurate detection of abnormalities and differentiation between genuine and non-genuine battery packs by monitoring temperature and output voltage changes during heating, ensuring reliable product authentication.
Implementation Method 1
When there is an abnormality in an electrode or an electrolyte inside a battery pack, the battery pack may self-generate heat when the battery pack is heated.
Implementation Method 2
When there is an abnormality in the electrode, the electrolyte, or a separator inside the battery pack, an output voltage of the battery pack may decrease when the battery pack is heated.
Data Source
AI summary
A determination method for determining whether or not a battery pack is normal, the method comprising a step of measuring a time-dependent change in at least one of a temperature and an output voltage of the battery pack while heating the battery pack, and determining whether or not the battery pack is normal based on the measured time-dependent change. According to this determination method, it is possible to accurately determine whether or not the battery pack is normal.