Thermally Conductive Battery Pouch Bag for Space-Saving Heat Dissipation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing secondary pouch batteries face challenges in heat dissipation due to the use of metal heat sinks and liquid cooling tubes, which occupy space and affect energy density, particularly in small-power and consumer electronic applications.

Innovation Solution

Incorporating a first thermally conductive material into the adhesive layer and a second thermally conductive material into the thermally conductive layer of the packaging bag, with specific mass percentages, enhances heat dissipation without occupying additional space, while increasing bonding strength and forming multiple heat dissipation channels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If metal heat sinks or liquid cooling tubes are added on the outer surface of the packaging bag, then heat dissipation performance is improved, but energy density is reduced due to occupied space

Engineering Contradiction:

Improveheat dissipation performanceVSAvoidenergy density

Core Design Contradiction:

TemperatureVSQuantity of substance

Solution Approach 1:

The patent merges the heat dissipation function with the existing adhesive layer by incorporating thermally conductive materials into it. This combines two previously separate functions (adhesion and heat dissipation) into a single integrated layer, eliminating the need for separate metal heat sinks or liquid cooling tubes while maintaining effective heat dissipation performance

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The adhesive layer is transformed into a multi-functional component that simultaneously performs both adhesion and heat dissipation functions. By adding thermally conductive materials to the adhesive layer, it becomes a universal component that serves multiple purposes, thereby improving energy density while maintaining heat dissipation capability

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Temperature

If thermally conductive materials are added to the adhesive layer, then heat dissipation performance is improved, but adhesion performance may be compromised

Engineering Contradiction:

Improveheat dissipation performanceVSAvoidadhesion performance

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The patent optimizes the mass percentage of thermally conductive materials in the adhesive layer to a specific range (5-50%) to achieve the desired balance between heat dissipation and adhesion performance. This parameter optimization ensures that the adhesive layer maintains sufficient bonding strength while effectively conducting heat away from the battery

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

Improves heat dissipation performance, maintains energy density, and ensures superior adhesion and encapsulation reliability, reducing localized overheating and extending the service life of the secondary battery.

Implementation Method 1

The adhesive layer includes a first thermally conductive material... heat generated during operation of the secondary battery can be more effectively conducted away

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

The thermally conductive layer includes a second thermally conductive material... heat generated during operation of the secondary battery can be more effectively conducted away, forming a heat transfer channel

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS20260081252A1Packaging bag, secondary battery, and electronic device

Publication Date: 2026.03.19 NINGDE AMPEREX TECHNOLOGY LTD

AI summary

This application discloses a packaging bag, a secondary battery, and an electronic device, where the packaging bag includes an encapsulation layer, a metal layer, an adhesive layer, and a packaging layer arranged in a stacked manner. The adhesive layer includes a first thermally conductive material, where a mass percentage of the first thermally conductive material in the adhesive layer is denoted as G1, and 1%≤G1≤30%. By incorporating the first thermally conductive material into the adhesive layer, heat generated during operation of the secondary battery can be more effectively conducted away, mitigating temperature rise inside the secondary battery, thereby improving the performance and safety of the secondary battery. Additionally, this enables more uniform heat distribution between the interior of the secondary battery and the packaging bag, reducing localized overheating and extending the service life of the secondary battery.