Battery Module Thermal Resin Anchoring for Stable Heat Dissipation

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Solution Overview

Problem

Existing battery modules face issues with heat dissipation and detachment of thermally conductive resin from the module housing, leading to performance degradation and instability.

Innovation Solution

A battery module structure featuring a module frame with hole-shaped anchors and a thermally conductive resin with downward extensions that interfere with the anchors, preventing detachment and enhancing thermal connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If thermally conductive resin is coated on the bottom plate and cured to connect the battery cell and module frame, then heat dissipation is improved and mechanical fixation is achieved, but the resin may detach from the bottom plate under shear or tensile load

Engineering Contradiction:

Improvebonding strength between resin and module frameVSAvoidresistance to shear and tensile load

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The invention transitions from a two-dimensional surface coating of thermally conductive resin to a three-dimensional anchored structure. By injecting resin into hole-shaped anchors that penetrate the bottom plate, the resin forms protrusions extending into the holes, creating a multi-dimensional mechanical interlock that prevents detachment under shear and tensile loads while maintaining thermal conductivity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If multiple anchors are arranged in grid pattern, then detachment prevention is improved, but device complexity increases

Engineering Contradiction:

Improveprevention of resin detachmentVSAvoidstructure complexity of module frame

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention divides the bottom plate into multiple discrete locations with hole-shaped anchors arranged in a grid pattern. This segmentation allows the thermally conductive resin to be anchored at multiple distributed points, preventing detachment while maintaining a relatively simple overall structure that can be manufactured using conventional techniques.

Inventive Principle:

Principle #1Segmentation

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 structure effectively dissipates heat and maintains a strong bond between the battery cell and module housing, preventing resin detachment and ensuring stable thermal conductivity.

Implementation Method 1

A thermally conductive resin interposed between a bottom surface of the battery cell and the bottom plate

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

the thermally conductive resin is provided with an extension extending downward and filling the anchor

Methodology Applied

Scientific EffectMechanical interlocking: Mechanical Fastener

Data Source

PatentEP4718586A1Battery module comprising thermal resin

Publication Date: 2026.04.01 LG ENERGY SOLUTION LTD

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AI summary

The present invention provides a structure of a battery module including: a battery cell; a module frame having a bottom plate whereon the battery cell is disposed; and a thermally conductive resin interposed between a bottom surface of the battery cell and the bottom plate, wherein the bottom plate is provided with a anchor arranged in grid of multiple rows and multiple columns, and the thermally conductive resin extends downward and fills the anchor.