Battery Pack Mesh Cooling for Uniform Cell Temperature

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Solution Overview

Problem

Battery packs in computer systems face challenges in maintaining optimal performance and operational reliability due to varying surface temperatures across battery cells, leading to inefficiencies in capacity and discharge time.

Innovation Solution

A mesh cooling structure with high thermal conductivity, such as a deformable metal mesh, is installed in contact with battery cells to reduce temperature gradients and maintain a uniform surface temperature, optimizing battery capacity and extending the functional period of the battery pack.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If battery cells are used in computer systems without cooling structures, then device complexity is reduced, but temperature gradients cause reduced battery capacity and performance

Engineering Contradiction:
Improvecooling structureVSAvoidbattery capacity
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent applies porous metal mesh structures as cooling elements that can be compressed to conform to battery cell surfaces. The porous structure provides large surface area for heat dissipation while maintaining flexibility and deformability to achieve intimate thermal contact with the battery cells, thereby improving heat transfer efficiency without requiring complex rigid cooling systems

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The patent changes the physical state and properties of the cooling structure by using deformable, compressible materials that can adapt their shape and contact pressure. The mesh structure transitions from a loose configuration to a compressed state that conforms to the battery cell geometry, optimizing thermal contact and heat dissipation parameters

Inventive Principle:
Principle #35Parameter changes

2Temperature

If mesh cooling structures are installed with battery cells, then temperature uniformity is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:
Improvetemperature uniformityVSAvoidcooling structure
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent implements local cooling by placing mesh structures at specific locations on battery cells where heat generation is most intense. The cooling elements are strategically positioned to address local thermal hotspots rather than providing uniform cooling across the entire battery pack, thereby improving temperature uniformity with minimal added complexity

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The porous mesh structure provides large surface area for heat dissipation while maintaining flexibility. The porous geometry enables efficient heat transfer from the battery cell surface to the cooling mesh, improving temperature uniformity through enhanced thermal contact without requiring complex rigid cooling systems

Inventive Principle:
Principle #31Porous materials

3Temperature

If deformable mesh structures are used for cooling, then thermal contact is improved, but manufacturing precision and installation control become more difficult

Engineering Contradiction:
Improvethermal contactVSAvoidinstallation control
Core Design Contradiction:
TemperatureVSManufacturing precision

Solution Approach 1:

The patent employs dynamically adaptable cooling structures that change their configuration based on installation conditions. The deformable mesh can adjust its shape and contact pressure automatically during installation, compensating for variations in battery cell geometry and positioning tolerances, thereby maintaining effective thermal contact without requiring high manufacturing precision

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent uses flexible mesh structures that can conform to the surface geometry of battery cells. These thin, deformable cooling elements adapt to surface irregularities and positioning variations, maintaining intimate thermal contact without requiring precise manufacturing or installation control

Inventive Principle:
Principle #30Flexible shells and thin films

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 mesh cooling structure effectively minimizes temperature differences across battery cells, enhancing discharge capacity and maintaining optimal battery performance by reducing flow impedance and maintaining cells within a desired temperature range.

Implementation Method 1

The mesh structure comprises a porous mesh cooling structure formed of a selected thermal conductivity material to reduce an operating temperature of the engaged battery cell

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS20240332665A1Configuring battery packs for computer systems
Publication Date: 2024.10.03 INTERNATIONAL BUSINESS MACHINE CORPORATION
  • US20240332665A1 patent drawing
  • US20240332665A1 patent drawing
  • US20240332665A1 patent drawing

AI summary

Embodiments of the present disclosure provide a mesh cooling structure, methods and battery cooling systems for cooling a battery cell, such as used in computer systems. The disclosed mesh cooling structure, method and battery cooling system provide effective battery cell cooling with the cooling mesh structure installed with a given battery cell to improve capacity and performance of the battery cell. The disclosed cooling mesh structure can be provided with selected battery cells in a battery pack to provide optimal battery capacity for the battery pack.