3D Vapor Chamber Thermal Management
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Solution Overview
Problem
Current thermal management systems for electronic devices are thermally limited, leading to reduced processing power and functionality due to overheating, especially in constrained size and weight environments, where conventional cooling methods like fans and heatsinks are insufficient for high-performance applications.
Innovation Solution
A thermal management system utilizing a 3D vapor chamber with a precision sintered 3D wick structure and additive manufacturing, which envelops electronics to efficiently dissipate heat through capillary action, enhancing thermal performance by integrating support structures for structural integrity and fluid transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional cooling methods (fans and heatsinks) are used, then the system can remove heat from electronic circuitry, but the size and weight constraints limit the cooling capacity and processing power
Solution Approach 1:
The patent employs phase change materials (PCM) that undergo phase transitions (solid-liquid) to absorb and store thermal energy. The PCM transitions from solid to liquid state when absorbing heat from electronic components, effectively removing heat without requiring heavy active cooling systems, thus increasing processing power while maintaining compact weight.
Solution Approach 2:
The patent utilizes porous structures within the thermal management system to increase surface area for heat transfer while maintaining lightweight construction. The porous materials provide extensive heat exchange surfaces without adding significant weight, enabling effective cooling of high-power electronics within size and weight constraints.
2Productivity
If device density is increased to improve computing power, then processing capability increases, but thermal management becomes more challenging and complex
Solution Approach 1:
The patent integrates multiple thermal management functions into a single unified structure combining passive heat sinks, active cooling channels, and phase change material reservoirs. This merged design simplifies the thermal management system while effectively handling heat from high-density electronic components, avoiding the need for separate complex cooling subsystems.
Solution Approach 2:
The thermal management system incorporates self-regulating mechanisms where phase change materials automatically absorb excess heat when temperatures rise, and cooling channels utilize natural convection and phase change dynamics without requiring complex control systems. This self-service approach manages thermal loads from high-density electronics while minimizing system complexity.
3Reliability
If processors are de-rated to avoid overheating, then thermal issues are prevented, but processing capability is drastically reduced
Solution Approach 1:
The patent pre-positiones phase change materials and cooling structures in optimal locations before operation begins. The PCM is strategically placed adjacent to high-power processors to immediately absorb heat upon generation, preventing temperature rises that would trigger thermal throttling. This preliminary thermal management enables processors to maintain full processing capability without overheating.
Solution Approach 2:
The patent utilizes phase change materials that undergo dramatic parameter changes (temperature plateau during phase transition) to maintain stable operating temperatures. When PCM transitions from solid to liquid, it absorbs large amounts of heat while maintaining nearly constant temperature, allowing processors to operate at full power without thermal instability or de-rating.
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 significantly improves thermal management by reducing thermal resistance, enabling increased processing power and functionality while maintaining a compact and lightweight design, with enhanced heat transfer capabilities compared to traditional systems.
Implementation Method 1
a precision sintered 3D wick structure independently created on at least some of the interior of the vapor chamber, wherein the precision sintered 3D wick structure transports the working fluid by capillary action from at least one working fluid receptacle to the at least a part of the heated portion of the electronics
Implementation Method 2
a working fluid contained within the vapor chamber and used to dissipate heat from at least a part of a heated portion of the electronics
Data Source
AI summary
In accordance with one aspect of the invention, a thermal management system for electronics includes a vapor chamber that at least partially envelops the electronics, a working fluid contained within the vapor chamber and used to dissipate heat from a part of a heated portion of the electronics and a precision sintered 3D wick structure independently created on some of the interior of the vapor chamber. The precision sintered 3D wick structure transports the working fluid by capillary action from at least one working fluid receptacle to a part of the heated portion of the electronics. In one embodiment of the invention, the 3D vapor chamber may be formed by the additive manufacturing processes. A further example includes precision sintered 3D support structures integrated into the closed 3D vapor chamber. The support structures mainly facilitate to support the 3D closed vapor chamber envelope from collapsing during operation, and add overall structural strength and additionally facilitate transfer of liquids and gas through their internal 3D porous zones.