Pouch Cell Shock Test Jig for Controlled Deformation and Sensing
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Solution Overview
Problem
Conventional shock test apparatuses for pouch-shaped battery cells lack accuracy and reliability due to the inability to maintain the original shape of the battery cell during testing, leading to potential deformation and damage, especially when measuring temperature changes.
Innovation Solution
A shock test apparatus featuring a jig with incision and through-hole portions to support the battery cell, allowing for precise deformation of the pressed part while maintaining the cell's shape, and incorporating a pressing member with a hemispherical cylinder to apply controlled pressure, along with a sensing unit to measure temperature changes without damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional shock test apparatus without a support structure is used to fix the battery cell, then the device complexity is reduced, but the battery cell may be bent or folded during testing, deteriorating the reliability and accuracy of test results
Solution Approach 1:
The jig is divided into multiple members (first and second jig members) with specific functional regions (incision portions and through-hole portions) that segment the support function into localized areas, allowing precise control over which parts of the battery cell are supported and which are allowed to deform
Solution Approach 2:
The jig members are designed with different functional zones: incision portions that allow localized deformation of the battery cell while through-hole portions provide support at specific locations. This creates local quality variations in the support structure, enabling selective deformation control
2Manufacturing precision
If the battery cell is fixed without a specialized jig structure to the conventional shock test apparatus, then the ease of operation is improved, but the manufacturing precision and shape maintenance of the battery cell deteriorate
Solution Approach 1:
The jig members are pre-configured with incision portions and through-hole portions positioned at optimal locations before the shock test. This preliminary arrangement ensures that when the battery cell is placed in the jig, the deformation and support functions are already optimized, eliminating the need for complex adjustments during operation
Data Source
AI summary
The present invention relates to a shock test apparatus for pouch-shaped battery cells and a shock test method for pouch-shaped battery cells using the same, and more particularly to a shock test apparatus for pouch-shaped battery cells, the shock test apparatus including a flat bottom plate, a jig including a first jig member and a second jig member located respectively at opposite surfaces of a pouch-shaped battery cell, each of the first jig member and the second jig member having a quadrangular shape, and a pressing member configured to press a predetermined part of the pouch-shaped battery cell, and a shock test method for pouch-shaped battery cells using the same.