Simultaneous Battery Pouch Inspection Device
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Solution Overview
Problem
Existing methods for inspecting secondary battery cell pouches are inefficient and unreliable, particularly in detecting internal separator damage, due to limitations in accuracy and the need for individual inspection of each pouch, which can lead to internal short circuits and reduced quality.
Innovation Solution
A device for simultaneously inspecting multiple secondary battery cell pouches, featuring a support member, movable member, pressing panels, and a current inspection unit, which applies voltage and measures current to determine defects, with an electrode module for surface contact with electrode terminals and a compact design to minimize space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual inspection is performed for each pouch-type battery cell by hand, then measurement precision can be maintained, but productivity is significantly low
Solution Approach 1:
The patent combines multiple inspection functions into a single integrated device that can simultaneously inspect multiple pouch-type battery cells. The device merges loading, pressing, and measurement functions into one system, allowing parallel inspection of multiple cells rather than sequential hand inspection, thereby significantly improving productivity while maintaining measurement precision through automated measurement mechanisms.
Solution Approach 2:
The inspection device is designed with multi-functionality to handle various inspection tasks simultaneously. It can inspect multiple pouch-type battery cells at once, perform both mechanical pressing and electrical measurement functions, and accommodate different cell configurations, thus improving overall inspection efficiency without compromising accuracy.
2Measurement precision
If separate lower and upper supports are used for inspection, then measurement precision can be achieved, but device complexity increases
Solution Approach 1:
The patent merges the lower support and upper pressing mechanism into an integrated structure where the upper pressing unit also serves as the measurement probe holder. This combination reduces the number of separate components while maintaining the functional separation needed for accurate insulation measurement, thereby reducing device complexity without sacrificing measurement precision.
3Productivity
If multiple pouches are inspected simultaneously, then productivity increases, but measurement precision may deteriorate due to interference
Solution Approach 1:
The inspection device divides the inspection space into separate measurement zones for each pouch-type battery cell. Each cell has its own dedicated pressing panels and measurement probes, ensuring that simultaneous inspection of multiple cells does not cause electrical interference or cross-contamination, thereby maintaining measurement precision while achieving high productivity through parallel inspection.
4Measurement precision
If hand inspection is performed for each pouch, then measurement precision can be maintained, but loss of time increases
Solution Approach 1:
The inspection device enables continuous automated inspection of multiple pouch-type battery cells without the interruptions inherent in hand inspection. The automated system can continuously load, press, and measure multiple cells in sequence or parallel, eliminating idle time between inspections and significantly reducing total inspection time while maintaining precision through consistent automated measurement protocols.
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
The device enables quick and accurate inspection of multiple secondary battery cell pouches, increasing reliability and efficiency while minimizing space, effectively detecting separator damage and preventing internal short circuits.
Implementation Method 1
a pressing panel (130) installed in parallel between the support member (110) and the movable member (120)
Implementation Method 2
a current inspection unit configured to apply a voltage and measure its current
Data Source
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AI summary
The present invention relates to a simultaneous inspection device of multiple secondary battery cell pouches, the simultaneous inspection device comprising: a support member installed for support; a movable member installed to face the support member; multiple pressing panels which are installed side by side between the support member and the movable member, and combined so that the gap between them can be adjusted by the back and forth movement of the movable member wherein the secondary battery cell pouches are inserted into each gap; a guide member for guiding the pressing panels to move in the direction necessary for adjusting the gaps; and a pressure driving unit for moving the movable member back and forth to pressurize and pressure-release the secondary battery cell pouch between the pressurizing panels on both sides.