Battery Module Vent Redirection to Prevent Beam-Shaped Ejection Damage

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing secondary battery modules with safety valves face issues where high-temperature ejections, such as gas, are not effectively prevented from being ejected in a concentrated beam shape, leading to potential holes in the structure and thermal deformation when the safety valve opens.

Innovation Solution

A device module with a direction change part located between the safety valve and the ejection direction portion, which disperses the advancing direction of ejections, preventing concentrated impingement and reducing thermal influence on the structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a safety valve is provided in the secondary battery to release internal pressure, then the safety valve can be activated to eject gas and reduce internal pressure when an abnormality occurs, but high-temperature ejection may be ejected through the opened safety valve causing defects in the module structure

Engineering Contradiction:

Improvesafety valve activationVSAvoidhigh-temperature ejection damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A shielding member is introduced as an intermediary component between the safety valve and the module structure. This shielding member intercepts the high-temperature ejection from the safety valve, preventing direct contact with the module structure while allowing the safety valve to function normally for pressure release

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The shielding member converts the harmful high-temperature ejection into a controlled interaction by capturing the thermal energy and redirecting it away from critical structural components, transforming a potentially damaging effect into a managed thermal event

Inventive Principle:

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

2Stress or pressure

If the safety valve opens to release pressure, then internal pressure is reduced, but the concentrated beam-shaped ejection can make holes in the structure or cause thermal deformation

Engineering Contradiction:

Improveinternal pressure reductionVSAvoidmodule structure integrity

Core Design Contradiction:

Stress or pressureVSStrength

Solution Approach 1:

The shielding member serves as a protective intermediary that absorbs and redirects the concentrated ejection beam, preventing it from penetrating or thermally deforming the module structure while maintaining the pressure relief function

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The shielding member is positioned in advance to intercept the ejection path, providing a protective barrier before the high-temperature ejection can damage the module structure, effectively cushioning against potential harm

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS20240243425A1Device module and change member-equipped power storage device

Publication Date: 2024.07.18 PRIME PLANET ENERGY & SOLUTIONS INC

AI summary

A device module includes a power storage device including a safety valve, a structure integrated with the power storage device, the structure including an ejection direction portion located in an ejection direction in which ejection is ejected out through the safety valve when the safety valve opens, and a direction change part located between the safety valve and the ejection direction portion, for changing an advancing direction of at least a part of the ejection ejected in the ejection direction from the safety valve.