Pouch Battery Module Cooling Plate for Cartridge-Free Fixation

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Solution Overview

Problem

Existing battery modules using pouch-type secondary batteries face challenges in maintaining a stacked state due to low mechanical stiffness, requiring additional components like cartridges and fastening components, which increase costs and complexity, and pose limitations in reducing size and weight while ensuring efficient cooling.

Innovation Solution

A battery module configuration that directly attaches pouch-type secondary batteries to a thermally conductive cooling plate, eliminating the need for cartridges and fastening components, and enhancing heat transfer efficiency by reducing thermal resistance and air layers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If pouch-type secondary batteries are used without cartridges, then weight and volume are reduced, but mechanical stiffness and stability deteriorate

Engineering Contradiction:

Improvebattery module weightVSAvoidstacked state stability

Core Design Contradiction:

Weight of moving objectVSStability of the object's composition

Solution Approach 1:

The cooling plate is merged with the structural support function, combining thermal management and mechanical stabilization into a single component. The battery pack case is integrated to provide both protection and structural rigidity, eliminating the need for separate cartridges while maintaining stability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The cooling plate serves multiple functions: thermal conduction for cooling, structural support for mechanical stiffness, and positional fixation for battery stability. This multi-functionality replaces the traditional cartridge structure, reducing weight while maintaining stability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Strength

If cartridges and fastening components are added, then mechanical strength and stability improve, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improvemechanical strengthVSAvoidmodule structure complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The cooling plate integrates structural support, thermal management, and fixation functions into one component, eliminating the need for separate cartridges and fastening components. This reduces the number of parts and simplifies the overall module structure while maintaining mechanical strength.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The cooling plate is designed as a multi-functional component that provides mechanical support, thermal conduction, and positional fixation simultaneously. The battery pack case serves as both protective enclosure and structural framework, reducing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If cartridges are used for protection and stacking, then reliability improves, but weight and volume increase

Engineering Contradiction:

Improveimpact resistanceVSAvoidbattery module weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The battery pack case is integrated to provide both protective enclosure and structural support functions, eliminating the need for separate cartridges. This reduces weight while maintaining impact resistance and reliability through the unified structural design.

Inventive Principle:

Principle #5Merging (Combining)

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

This configuration improves cooling capability, simplifies the module structure, reduces weight and size, and lowers manufacturing costs, while providing stable fixation and enhanced impact resistance.

Implementation Method 1

a cooling plate including a thermally conductive material, arranged under the plurality of pouch-type secondary batteries

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

The adhesive material may include a thermally conductive material, and the adhesive material may be arranged between the secondary batteries and the cooling plate

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12334523B2Battery module

Publication Date: 2025.06.17 LG ENERGY SOLUTION LTD

AI summary

Discussed is a battery module including a plurality of pouch-type secondary batteries arranged in parallel to each other, each pouch type secondary battery comprising an electrode assembly, a receiving portion configured to receive the electrode assembly and a pouch exterior, a cooling plate arranged under the plurality of pouch-type secondary batteries to accommodate the plurality of pouch-type secondary batteries, and a thermally conductive adhesive between the plurality of pouch-type secondary batteries and the cooling plate. The cooling plate includes a first recess to receive a portion of the pouch exterior and a second recess to receive a portion of the thermally conductive adhesive.