Cold Plate Mesh Interlayer for Blade Deformation Prevention

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Solution Overview

Problem

Conventional cold plates face issues with blade deformation and reduced cooling efficiency due to the joining of the top and bottom walls, leading to potential deformation and loss of thermal contact.

Innovation Solution

Incorporating a mesh portion between the top wall and blades, along with column portions and a metal elbow, to enhance structural integrity and maintain thermal conductivity, thereby preventing deformation and improving cooling efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the top wall is joined to the bottom wall in a conventional cold plate, then the structural assembly is completed, but the blades may deform and cooling effect is lowered

Engineering Contradiction:
Improvestructural assemblyVSAvoidblade deformation
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

A cushioning member is introduced as an intermediary element between the top wall and blades. This cushioning member absorbs deformation forces during the joining process of the top and bottom walls, preventing direct transmission of stress to the blades and thereby preventing blade deformation while still achieving complete structural assembly.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If the top wall is joined to the bottom wall, then the cold plate structure is formed, but thermal contact is lost and cooling efficiency decreases

Engineering Contradiction:
Improvestructure formationVSAvoidthermal contact
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The cushioning member serves as a mediator that maintains thermal contact between the top wall and blades during the joining process. By absorbing mechanical deformation forces, it prevents loss of thermal contact while allowing complete structure formation, thus maintaining cooling efficiency.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The cushioning member is made of elastic material that changes its physical state under compression during joining. This elastic deformation allows the cushioning member to absorb forces while maintaining continuous thermal contact, preventing the loss of cooling efficiency during structure formation.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If a mesh portion is added between top wall and blades, then blade deformation is prevented, but device complexity increases

Engineering Contradiction:
Improveblade deformation preventionVSAvoidstructure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The cushioning member is designed as a thin, flexible element that can be easily integrated between the top wall and blades. This thin-film approach provides effective deformation protection while minimizing the increase in device complexity and maintaining a compact structure.

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 solution effectively prevents blade deformation and enhances thermal conductivity, ensuring consistent cooling performance by maintaining structural integrity and reducing refrigerant leakage.

Implementation Method 1

The mesh portion is made of an elastic material, and absorbs a deformation force that occurs when the top wall is joined to the bottom wall

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The bottom wall includes a lower surface to be in thermal contact with a heat generating component

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS20250338433A1Cold plate
Publication Date: 2025.10.30 NIDEC CORP(JP)
  • US20250338433A1 patent drawing
  • US20250338433A1 patent drawing
  • US20250338433A1 patent drawing

AI summary

A cold plate includes a bottom wall, a top wall, blades, a side wall, and a mesh portion. The bottom wall includes a lower surface in thermal contact with a heat generating component. The top wall covers an upper surface of the bottom wall. The blades are arranged side by side on the upper surface of the bottom wall and extend linearly. The side wall is located between the bottom wall and the top wall, and defines a refrigerant flow path that surrounds the blades and through which the refrigerant flows. The mesh portion is sheet-shaped, located between the top wall and the blades, and includes a metal portion.