Pouch Battery Cell Tray Structure for Lead-Safe Transport

Solution Overview

Problem

Pouch-type secondary batteries are prone to disconnection of electrode leads due to bending when subjected to forces during movement, leading to reduced capacity and potential damage.

Innovation Solution

A cell tray with a recessed part and edge protrusion for secure fixation, using insulating materials like styrofoam, and a reinforcing plate for stability, along with an additional recessed part to accommodate terrace swelling, ensuring the battery is stably fixed and protected.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the battery cell is transported without a recessed part in the cell tray, then the device complexity is reduced, but the battery cell becomes unstable and prone to shaking during movement

Engineering Contradiction:

Improvebattery cell stabilityVSAvoidcell tray structure

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The cell tray is segmented into multiple functional regions: a recessed part for the main body of the battery cell, and an additional recessed part for the terrace portion. This segmentation allows each region to provide targeted support, preventing different parts of the battery cell from moving independently and causing disconnection.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The cell tray is designed with pre-formed recessed parts that match the dimensions and shape of the battery cell components. This preliminary action of creating customized support structures ensures the battery cell is immediately stabilized upon placement, preventing shaking and disconnection before movement occurs.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the electrode lead is allowed to move freely during battery movement, then the ease of operation is improved, but the foil part bends and leads to disconnection

Engineering Contradiction:

Improveelectrode lead connection reliabilityVSAvoidbattery cell movement

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The cell tray provides different types of support at different locations: the recessed part provides firm support for the battery cell body, while the additional recessed part provides cushioned support for the terrace portion. This local differentiation of support quality protects the electrode lead connection zone without restricting overall battery handling.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The additional recessed part is designed to accommodate the terrace portion with appropriate clearance and cushioning. This beforehand cushioning prevents direct contact and potential damage between the terrace portion and the cell tray during movement, protecting the electrode lead connection from bending and disconnection.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Object-affected harmful factors

If the terrace part is not accommodated separately, then the device complexity is reduced, but the battery cell lacks protection against terrace swelling and external damage

Engineering Contradiction:

Improveprotection against damageVSAvoidcell tray structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The cell tray is segmented into multiple functional regions: a recessed part for the main body of the battery cell, and an additional recessed part for the terrace portion. This segmentation allows each region to provide targeted support, preventing different parts of the battery cell from moving independently and causing disconnection.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The cell tray is designed with pre-formed recessed parts that match the dimensions and shape of the battery cell components. This preliminary action of creating customized support structures ensures the battery cell is immediately stabilized upon placement, preventing shaking and disconnection before movement occurs.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12548838B2Battery cell tray and storage container for same

Publication Date: 2026.02.10 LG ENERGY SOLUTION LTD

AI summary

A cell tray that transports a battery cell that is pressed and fixed by a lower plate and an upper plate includes a cell tray bottom part defining a recessed part corresponding to the lower plate, and an edge part protruding from the cell tray bottom part and located outward of the recessed part. The lower plate is positioned on the recessed part.