Inflatable Sealing Ring Structure for Battery Standing Boxes

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing sealing boxes and standing devices for lithium battery manufacturing face challenges with difficult pressurization and poor standing effects due to the downward pressure on the lower cover, which affects the sealability between the lower cover and the box body.

Innovation Solution

A sealing box with an elastic sealing ring and an inflation hole on the lower cover, where the deformation end of the sealing ring is deformed by airflow to generate a force that pushes the sealing end towards the upper cover, maintaining sealability and facilitating pressurization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the sealing box is pressurized by inflating airflow into the accommodating chamber, then the infiltration rate of electrolytes is improved, but the downward pressure on the lower cover affects sealability between the lower cover and upper cover

Engineering Contradiction:

Improveinfiltration rate of electrolytesVSAvoidsealability between covers

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The elastic sealing ring is divided into two functional segments: a deformation end that responds to pressure changes and a sealing end that maintains contact with the upper cover. This segmentation allows different parts of the sealing ring to perform different functions simultaneously, resolving the contradiction between pressurization and sealability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The sealing ring transitions from a static sealing component to a dynamic one that can deform in response to pressure changes. The deformation end moves in response to airflow inflation, actively adjusting the sealing force to maintain sealability during pressurization, thus resolving the contradiction between improved infiltration rate and maintained sealability.

Inventive Principle:

Principle #15Dynamics

2Duration of action of moving object

If the lower cover is pressurized from below, then the standing process is accelerated, but the downward force reduces the sealing contact force between covers

Engineering Contradiction:

Improvestanding process durationVSAvoidsealing contact force

Core Design Contradiction:

Duration of action of moving objectVSForce

Solution Approach 1:

The downward pressure that initially harms sealability is converted into a beneficial force that deforms the elastic sealing ring. This deformation activates the sealing mechanism, transforming the harmful downward force into a useful sealing action that maintains contact between covers during the accelerated standing process.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The physical state of the sealing ring changes from rigid to deformable under pressure. By changing the parameter of the sealing ring's structural rigidity through elastic deformation, the system maintains sealing contact force even as the standing process is accelerated through pressurization.

Inventive Principle:

Principle #35Parameter changes

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 solution ensures effective pressurization and maintains the sealability between the upper and lower covers, improving the standing effect and infiltration rate of electrolytes in lithium batteries.

Implementation Method 1

the deformation end is deformed under action of airflow inflated into the sealing groove by the inflation hole, squeezes groove walls of the sealing groove and generates a force to push the sealing end to move toward the upper cover

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

deformation end is deformed under action of airflow inflated into the sealing groove by the inflation hole

Methodology Applied

Scientific EffectGas pressure: Pressure Increase

Data Source

PatentUS12240670B2Sealing box and standing device

Publication Date: 2025.03.04 WUXI LEAD INTELLIGENT EQUIP CO LTD

AI summary

A sealing box and a standing device are disclosed. The sealing box includes an upper cover; a lower cover which is detachably connected to the upper cover and encloses with the upper cover to form an accommodating chamber, and defines a sealing groove toward the upper cover and an inflation hole capable of inflating airflow into the sealing groove; and an elastic sealing ring which includes a sealing end sealedly contacting the upper cover and a deformation end extending into the sealing groove. The deformation end is deformed under force of the airflow and squeezes the sealing groove, so as to apply a force to the lower cover toward the upper cover.