Thermal Barrier Interconnect for Heat Management in Memory Systems

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Solution Overview

Problem

Existing cooling systems for electronic components, especially in complex and high-density systems like SSDs and DIMMs, are inefficient, noisy, expensive, and fail to effectively dissipate heat, leading to reduced performance and potential failure due to localized hotspots and temperature sensitivity issues.

Innovation Solution

An electronic assembly with a thermal barrier interconnect, such as a flexible circuit board, is used to separate heat generating components from heat sensitive components, forming a thermal barrier that allows one board to operate at a reduced temperature, thereby protecting sensitive components and improving heat dissipation without the need for traditional heat sinks or cases.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If traditional cooling systems (heat sinks and fans) are used to dissipate heat from electronic components, then heat dissipation capability is improved, but device complexity, noise, expense, and energy consumption increase

Engineering Contradiction:
Improveheat dissipation capabilityVSAvoidcooling system complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent divides the circuit board into multiple sections with different thermal characteristics. A first section houses heat-generating components while a second section houses heat-sensitive components, creating thermal zones that manage heat distribution without requiring complex external cooling systems. This segmentation allows different parts of the system to operate at appropriate temperatures through inherent design rather than active cooling.

Inventive Principle:
Principle #1Segmentation

2Temperature

If heat sinks are integrated into the case design for SSDs, then heat removal is improved, but adaptability to different form factors decreases

Engineering Contradiction:
Improveheat removal efficiencyVSAvoidform factor compatibility
Core Design Contradiction:
TemperatureVSAdaptability or versatility

Solution Approach 1:

The circuit board design serves multiple functions simultaneously: it provides electrical connectivity, structural support, and thermal management. By integrating thermal zone management directly into the circuit board layout rather than requiring separate case-integrated heat sinks, the design becomes adaptable to various form factors including PCIe and embedded SSDs that lack traditional cases.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Temperature

If multiple heat sinks and high-speed fans are used in high-density systems, then heat dissipation is improved, but noise and energy consumption increase

Engineering Contradiction:
Improveheat dissipationVSAvoidenergy consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The system uses its own structure to manage heat rather than requiring external active cooling components. The circuit board's thermal zone design allows heat-generating components to naturally dissipate heat to the environment and heat-sensitive components to remain in cooler zones, eliminating the need for energy-consuming fans and external heat sinks.

Inventive Principle:
Principle #25Self-service

4Volume of moving object

If heat-generating and heat-sensitive components are located close together to reduce device size, then miniaturization is achieved, but thermal interference increases

Engineering Contradiction:
Improvesystem sizeVSAvoidthermal interference
Core Design Contradiction:
Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

Different regions of the circuit board are designed with different thermal qualities. The first section is designed to tolerate and dissipate heat from power management ICs and flash memory, while the second section is designed to maintain lower temperatures for sensitive components like microcontrollers. This local differentiation of thermal characteristics allows compact design while protecting sensitive components from thermal damage.

Inventive Principle:
Principle #3Local quality

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 solution effectively reduces thermal issues, increases the life of SSDs by enhancing data retention, and compensates for thermal expansion and contraction across a wide temperature range, while maintaining electrical connectivity and airflow for efficient cooling.

Implementation Method 1

The thermal barrier interconnect forms a thermal barrier between the first and second circuit boards which protects the heat sensitive components from the heat generating components

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS9348377B2Thermal isolation techniques
Publication Date: 2016.05.24 SANDISK TECHNOLOGIES LLC
  • US9348377B2 patent drawing
  • US9348377B2 patent drawing
  • US9348377B2 patent drawing

AI summary

Various embodiments described herein include systems, methods and/or devices used to dissipate heat generated by electronic components in an electronic system (e.g., a memory system that includes closely spaced memory modules). In one aspect, an electronic assembly includes a first circuit board with one or more heat generating components coupled thereto. The electronic assembly further includes a second circuit board with one or more heat sensitive components coupled thereto. The electronic assembly also includes a thermal barrier interconnect. The thermal barrier interconnect electrically couples the first circuit board to the second circuit board. In some embodiments, thermal barrier interconnect is a flexible interconnect with a lower thermal conductivity than the first circuit board and the second circuit board. The thermal barrier interconnect forms a thermal barrier between the first and second circuit boards which protects the heat sensitive components from the heat generating components.