Battery Testing Device Short-Circuit Detection Integration
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Solution Overview
Problem
Existing battery testing devices struggle to accurately and efficiently detect minor internal short circuits in batteries, as the subtle alterations in charging voltage or current can be misinterpreted as noise, leading to potential overlooks in battery stability and lifespan assessment.
Innovation Solution
A battery testing device integrating a power supply module and a short-circuit sensing module that calculates the output energy by integrating the voltage or current over a specific period, generating an error signal if it exceeds a predetermined range, allowing for precise detection of internal short circuits through integration rather than relying solely on current fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If typical testing devices analyze charging voltage or current to evaluate battery quality, then the testing process can be completed within time requirements, but subtle alterations indicating internal short circuits are overlooked due to noise interference
Solution Approach 1:
The patent applies preliminary action by integrating the voltage or current signal over a predetermined time period before making the short-circuit determination. This integration process accumulates the signal energy in advance, allowing the system to detect subtle alterations that would otherwise be lost in noise, while still completing the test within acceptable time frames.
Solution Approach 2:
The patent changes the parameter from direct voltage/current measurement to integrated energy calculation. By transforming the measurement approach from instantaneous values to integrated energy over time, the system becomes more sensitive to subtle changes while maintaining testing efficiency.
2Measurement precision
If the testing device spends more time on each battery to improve detection accuracy, then internal short circuits can be detected more accurately, but the testing efficiency decreases
Solution Approach 1:
The system performs the integration operation during the normal charging/testing process, accumulating energy data in advance without requiring separate extended measurement periods. This allows accurate detection while maintaining the original testing timeline and efficiency.
Solution Approach 2:
The patent maintains continuous integration of the voltage or current signal throughout the testing process, ensuring that useful detection action occurs continuously without interruption. This continuous monitoring enables accurate detection while keeping the test duration minimal.
3Measurement precision
If the device integrates voltage or current over a testing period to calculate output energy, then internal short circuits can be detected more precisely, but the device complexity increases
Solution Approach 1:
The sensing module is designed to perform multiple functions: it integrates the voltage or current signal, calculates the output energy, and determines short-circuit conditions. This multi-functionality reduces the need for separate dedicated circuits for each operation, thereby limiting the increase in device complexity while achieving precise detection.
Data Source
AI summary
Herein disclosed is a device for testing batteries as subjects and a method thereof. The battery testing device comprises a power supply module and a short-circuit sensing module. The power supply module is configured to provide a first testing voltage or a first testing current. The short-circuit sensing module, coupled with the power supply module, is configured to integrate the first testing voltage or current during a first testing period, thereby calculating a first output energy provided by the power supply module. The short-circuit sensing module also determines whether the first output energy exceeds a predetermined energy range; when the range is exceeded, the same module generates an error signal. Wherein the short-circuit sensing module generates an error count by calculating during a second testing period the number of times the short-circuit sensing module generates the error signal.