Battery Tray Guide Lip Structure to Prevent Cell Surface Defects
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Solution Overview
Problem
The existing secondary battery trays cause appearance defects in secondary batteries due to overlapping contact during the activation process, which can lead to damage.
Innovation Solution
A secondary battery tray design featuring guide lips with non-contact portions and separation prevention protrusions that minimize contact areas, ensuring stable support and reducing pressure points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the guide lip contacts the secondary battery to provide support, then the battery is stably supported, but appearance defects occur due to overlapping contact pressure
Solution Approach 1:
The guide lip is designed with non-uniform thickness, featuring a contact portion with greater thickness for stable support and a non-contact portion with smaller thickness to avoid appearance defects. This local differentiation in thickness allows different regions of the guide lip to serve different functions: the thicker contact portion provides structural support while the thinner non-contact portion prevents harmful contact with the battery surface.
2Strength
If the guide lip has uniform thickness for structural strength, then the tray is mechanically strong, but appearance defects occur due to excessive contact area
Solution Approach 1:
The guide lip implements local quality variation through non-uniform thickness distribution. The contact portion maintains greater thickness to ensure mechanical strength and stable support, while the non-contact portion reduces thickness to minimize contact area and prevent appearance defects. This localized thickness variation allows the guide lip to simultaneously achieve structural strength and defect prevention.
3Ease of operation
If the holding unit contacts the extended pouch case for support, then the battery is properly positioned, but pressure is concentrated on specific areas
Solution Approach 1:
The holding unit is designed with differentiated contact characteristics: the guide lip's contact portion provides concentrated support for accurate positioning, while the non-contact portion reduces pressure on specific battery areas. This local quality differentiation in the holding unit structure enables proper positioning without excessive pressure concentration that could cause appearance defects.
Data Source
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AI summary
A plurality of secondary batteries may be loaded on a secondary battery tray according to an embodiment of the present disclosure. The secondary battery tray may include a bottom portion; and a plurality of guide lips that is located above the bottom portion, is configured to erect and support the secondary battery, and faces each other. The guide lip may include a contact portion configured to contact and support the secondary battery; and a non-contact portion that is located outside the contact portion, has a thinner thickness than the contact portion, and does not contact the secondary battery.