Layered Heat Dissipation Member for Battery Module Heat Isolation

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Solution Overview

Problem

Conventional battery packs face challenges in effectively dissipating heat while preventing heat propagation between adjacent battery modules, particularly during ignition or explosion events.

Innovation Solution

A heat dissipation member comprising a frame with connected first and second frames, heat insulating members, central heat insulating members, and heat dispersion members, which are strategically positioned to disperse heat and prevent heat transfer between adjacent battery modules.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If heat dissipation members are arranged between battery cells to disperse heat, then heat dissipation effectiveness is improved, but heat may still propagate to adjacent battery modules during thermal runaway

Engineering Contradiction:

Improveheat dissipation effectivenessVSAvoidheat propagation between modules

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The heat dissipation member is divided into multiple functional segments: heat dispersion members (first and second) that conduct heat away from battery cells, heat insulating members (first, second, and central) that create thermal barriers, and a frame member that provides structural support. This segmentation allows different regions to perform specialized functions - some areas disperse heat while others block heat propagation paths between adjacent battery modules.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The heat insulating members act as intermediary elements positioned between the heat dispersion members and adjacent battery modules. These insulating members (particularly the central heat insulating member between the first and second heat dispersion members) serve as thermal mediators that allow controlled heat management while preventing uncontrolled heat propagation to neighboring modules during thermal runaway events.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Volume of moving object

If battery modules are placed closely together to reduce pack size, then space utilization is improved, but heat propagation risk between modules increases

Engineering Contradiction:

Improvebattery pack sizeVSAvoidheat propagation risk

Core Design Contradiction:

Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The heat dissipation member employs a nested structure where the frame member contains multiple heat dispersion members and heat insulating members arranged in concentric or layered configurations. The first and second heat dispersion members are positioned with the central heat insulating member between them, creating a compact nested arrangement that maximizes heat management functionality within minimal space, thereby reducing overall battery pack volume while maintaining safety.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

Different regions of the heat dissipation member have specialized local properties: the heat dispersion members (first and second) are positioned in contact with or near battery cells to provide high thermal conductivity for heat absorption, while the heat insulating members (first, second, and central) are strategically placed in regions where heat propagation to adjacent modules must be blocked. This local differentiation of thermal properties allows compact arrangement while preventing heat propagation pathways.

Inventive Principle:

Principle #3Local quality

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 proposed solution effectively disperses heat generated in battery modules while preventing heat propagation to adjacent modules, thereby mitigating the risk of secondary ignition or explosion.

Implementation Method 1

a first heat dispersion member located between the inner surface of the first frame and the central heat insulating member; and a second heat dispersion member located between the inner surface of the second frame and the central heat insulating member

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 2

a first heat insulating member attached to the outer surface of the first frame; a second heat insulating member attached to the outer surface of the second frame; a central heat insulating member located between the inner surface of the first frame and the inner surface of the second frame

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentEP4199195B1Heat dissipation member and battery pack including same

Publication Date: 2025.05.28 LG ENERGY SOLUTION LTD

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AI summary

A heat dissipation member according to an embodiment of the present disclosure includes a frame member including a first frame and a second frame that are connected to each other, wherein an inner surface of the first frame and an inner surface of the second frame are folded to face each other; a first heat insulating member attached to the outer surface of the first frame; a second heat insulating member attached to the outer surface of the second frame; a central heat insulating member located between the inner surface of the first frame and the inner surface of the second frame; a first heat dispersion member located between the inner surface of the first frame and the central heat insulating member; and a second heat dispersion member located between the inner surface of the second frame and the central heat insulating member.