Battery Pack Maintenance System Using Image-Guided Cell Replacement
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Solution Overview
Problem
Battery packs face challenges in maintenance due to the complexity of testing and replacing individual cells within the pack, leading to inefficiencies and potential unbalanced configurations after replacement, which can cause further deterioration.
Innovation Solution
A battery pack maintenance system that includes maintenance circuitry, image input circuitry, and user input circuitry to select and replace batteries based on measured parameters, ensuring balanced configurations by using a database to identify and replace batteries with similar characteristics, and perform tests without disassembling the pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual batteries are disconnected from the battery pack for testing, then accurate test results can be obtained, but significant downtime occurs and the process becomes time-consuming
Solution Approach 1:
The system segments the battery pack into individual battery units that can be independently identified and tested. Each battery is assigned a unique identifier (such as a barcode or RFID tag) that allows the maintenance device to selectively test individual batteries while they remain connected in the pack, eliminating the need to disconnect them for testing.
Solution Approach 2:
The system introduces an intermediary maintenance device that interfaces between the battery pack and the testing equipment. This device includes image input circuitry to capture battery identifiers, a database to store battery information, and maintenance circuitry to perform tests, enabling accurate testing without physical disconnection.
2Reliability
If batteries are replaced in the battery pack, then failing batteries can be substituted, but unbalanced configurations may occur causing further deterioration
Solution Approach 1:
The system implements feedback by continuously monitoring battery parameters (such as voltage, capacity, and state of charge) and storing this information in a database. When a battery needs replacement, the system provides feedback guidance on selecting a replacement battery with matching characteristics, ensuring the battery pack maintains balanced configuration and optimal performance.
Solution Approach 2:
The system performs preliminary actions by pre-storing battery characteristic data in a database before replacement occurs. This allows the maintenance device to pre-determine the appropriate replacement battery specifications and guide the replacement process to maintain configuration balance, preventing future deterioration.
3Reliability
If entire battery packs are replaced instead of individual batteries, then reliability is restored, but large expenses are incurred
Solution Approach 1:
The system extracts only the failing batteries from the battery pack for replacement, rather than replacing the entire pack. The maintenance device identifies specific faulty batteries through imaging and database comparison, allowing selective removal and replacement of only the necessary units, thereby significantly reducing replacement costs while restoring reliability.
Data Source
AI summary
A battery pack maintenance system includes maintenance circuitry, image input circuitry, a display, and user input circuitry. The maintenance circuitry is configured to perform a maintenance operation on a battery pack having a plurality of batteries. The image input circuitry is configured to receive an image of the battery pack. The display is configured to display the image. The user input circuitry is configured to receive a battery selection user input identifying a selected battery of the battery pack. The maintenance circuitry is configured to associate the battery selection user input with a maintenance operation performed on the selected battery.