Pouch Battery Fixture With Thermal Plates for Uniform Cooling

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Solution Overview

Problem

Traditional methods for assembling battery modules using pouch-shaped secondary batteries face challenges in heat dissipation, efficiency, and cost due to inadequate thermal conductivity and complex, material-intensive processes.

Innovation Solution

A fixture comprising thermal conductive plates and support blocks that improve heat dissipation by creating a receiving space for each battery, reducing component count, and enhancing assembly efficiency, while reducing costs through improved thermal conductivity and space utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If traditional aluminum plates or plastics latched in front-rear direction are used to form battery units, then the structure can be assembled, but the thermal conductive area is small and heat dissipation performance is poor

Engineering Contradiction:
Improveheat dissipation performanceVSAvoidthermal conductive area
Core Design Contradiction:
TemperatureVSArea of stationary object

Solution Approach 1:

The patent transitions from traditional single-plane thermal conduction (bottom-only contact) to multi-dimensional thermal conduction by adding lateral contact portions that extend along the length direction of the battery. This creates a three-dimensional thermal conduction network involving bottom surfaces, lateral surfaces, and end surfaces, significantly increasing the effective thermal conductive area and improving heat dissipation performance across the entire battery module.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Stability of the object's composition

If traditional aluminum plates or plastics latched in front-rear direction are used, then battery units can be formed, but the temperature difference on different locations of the pouch-shaped secondary battery surface is large

Engineering Contradiction:
Improvetemperature distribution uniformityVSAvoidtemperature difference
Core Design Contradiction:
Stability of the object's compositionVSTemperature

Solution Approach 1:

The patent applies local quality by providing different thermal conduction structures at different locations of the battery. The thermal conduction plates are configured with bottom contact portions, lateral contact portions, and end contact portions that create localized thermal conduction pathways at specific areas (bottom, sides, and ends), ensuring uniform heat dissipation across the entire battery surface and reducing temperature differences between different locations.

Inventive Principle:
Principle #3Local quality

3Ease of manufacture

If many components and materials are used in the traditional assembling method, then battery modules can be assembled, but the assembling efficiency is low

Engineering Contradiction:
Improveassembling efficiencyVSAvoidnumber of components
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent merges multiple traditional components (aluminum plates, plastics, cooling mechanisms) into an integrated thermal conduction plate structure. The thermal conduction plate combines support, thermal conduction, and cooling functions into a single component that directly contacts the battery at multiple locations, eliminating the need for separate latched plates and reducing the overall number of components and assembly steps.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of manufacture

If many components and materials are used in the traditional assembling method, then battery modules can be assembled, but the cost is high

Engineering Contradiction:
Improvemanufacturing costVSAvoidnumber of components and materials
Core Design Contradiction:
Ease of manufactureVSQuantity of substance

Solution Approach 1:

The patent extracts and eliminates unnecessary components from the traditional assembly structure. By removing redundant aluminum plates, plastics, and intermediate latching mechanisms, the design retains only the essential thermal conduction plates that perform both structural support and thermal management functions, thereby reducing material quantity and manufacturing cost.

Inventive Principle:
Principle #2Taking out (Extraction)

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 solution enhances heat dissipation, reduces assembly complexity, and lowers costs by improving thermal conductivity and assembly efficiency, ensuring consistent temperature distribution and prolonged module lifespan.

Implementation Method 1

at least one thermal conductive plate... the abutting portion of each thermal conductive plate is attached to the main body of each pouch-shaped secondary battery... the contact portion of each thermal conductive plate contacts the peripheral wall of the thermal conductive frame

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP3451413B1Fixture, battery unit and battery module
Publication Date: 2023.11.08 CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
  • EP3451413B1 patent drawingFigure 1~2
  • EP3451413B1 patent drawingFigure 3~6
  • EP3451413B1 patent drawingFigure 7~10

AI summary

The present invention provides a fixture, a battery unit and a battery module. The fixture comprises at least one thermal conductive plate and two support blocks. Each thermal conductive plate comprises an abutting portion, a contact portion and a connecting portion. The two support blocks are fixed on two ends of the at least one thermal conductive plate in a length direction; the abutting portion, the connecting portion and the contact portion and the two support blocks form a receiving space. The battery unit comprises at least one pouch-shaped secondary battery having a main body and the fixture, the abutting portion is attached to the main body. The battery module comprises a thermal conductive frame and the battery units. The thermal conductive frame comprises a peripheral wall and a receiving cavity, the battery units are received in the receiving cavity, the contact portion contacts the peripheral wall.