Curved Battery Cell Tray with Depressed Mount Units

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Solution Overview

Problem

Curved pouch-shaped batteries experience dimensional instability due to external impacts, leading to reduced yield in electronic device integration.

Innovation Solution

A battery cell tray with a flat body and depressed battery cell mount units, featuring a curved base surface and side walls, along with ribs, to securely hold and stabilize curved battery cells, preventing curvature changes from external impacts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a curved pouch-shaped battery is used to match electronic device shapes, then adaptability to device designs is improved, but dimensional stability deteriorates due to external impact

Engineering Contradiction:
Improveadaptability to device shapesVSAvoiddimensional stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent introduces a tray as an intermediary component between the curved battery and the electronic device. The tray has a curved receiving part that matches the battery's curvature, providing external support and protection. This mediator structure allows the battery to maintain its curved shape for device adaptability while the tray protects it from external impacts that would cause dimensional instability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a curved battery structure is implemented, then design flexibility is improved, but manufacturing precision deteriorates due to curvature changes

Engineering Contradiction:
Improvedesign flexibilityVSAvoidcurvature precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The tray is designed with a pre-formed curved receiving part that matches the desired battery curvature. By preparing this supporting structure in advance, the tray provides a predetermined geometric constraint that guides and maintains the battery's curvature during manufacturing and assembly, ensuring consistent curvature precision across production batches.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If a curved battery is mounted without additional support, then device integration simplicity is improved, but reliability deteriorates due to curvature changes from impact

Engineering Contradiction:
Improvemounting simplicityVSAvoidcurvature stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The tray combines multiple functions into a single component: it serves as both the mounting structure and the protective support for the curved battery. The curved receiving part is integrated into the tray body, providing both structural support for easy mounting and protective enclosure for maintaining curvature stability under external impact.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP3035409B1Tray for storing battery cell having curved surface structure
Publication Date: 2020.03.25 LG CHEM LTD
  • EP3035409B1 patent drawingFigure 1
  • EP3035409B1 patent drawingFigure 2
  • EP3035409B1 patent drawingFigure 3

AI summary

Disclosed herein is a battery cell tray for receiving a secondary battery that can be repeatedly charged and discharged. More particularly, there is provided a battery cell tray having a curved battery cell receiving part that is capable of improving dimensional stability of a curved battery cell.