PoE Cable Active Cooling via Thermoelectric Elements
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Solution Overview
Problem
The increased power throughput in Power over Ethernet (PoE) cables leads to excessive heat generation, which can cause fire hazards and degrade cable materials, limiting the number of cables that can be safely bundled together due to inadequate heat dissipation in standard cable jackets.
Innovation Solution
Incorporating active cooling elements, such as thermoelectric devices employing the Seebeck, Peltier, or Thomson effects, into the cable structure or bundles to provide thermoelectric cooling, and regulating power signals to reduce heat generation, including the use of active cooling elements like thermoelectric components integrated into the cable jacket or as central fillers, and power controllers for intermittent power cycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power throughput in PoE cables is increased to meet growing device power requirements, then power delivery capability is improved, but heat generation increases causing fire hazards and material degradation
Solution Approach 1:
The patent applies this principle by using the generated heat itself to power thermoelectric cooling elements (TECs) integrated into the cable structure. The heat that would normally be a harmful byproduct is converted into a useful resource to drive the cooling mechanism, creating a self-regulating thermal management system that prevents fire hazards while maintaining high power delivery capability
Solution Approach 2:
The patent changes the thermal parameters of the cable system by integrating active cooling elements that dynamically adjust the temperature profile. The system modifies heat dissipation rates and operating temperatures to keep them within safe thresholds while maintaining high power throughput, effectively decoupling power delivery capability from heat accumulation
2Ease of operation
If multiple cables are bundled together to improve cable management and reduce installation complexity, then ease of operation is improved, but heat dissipation efficiency deteriorates due to trapped heat
Solution Approach 1:
The patent applies this principle by nesting thermoelectric cooling elements within the cable structure itself, and potentially nesting multiple cables with active cooling within a bundled configuration. The cooling elements are integrated inside the cable jacket, creating a hierarchical thermal management system that allows cables to be bundled while maintaining heat dissipation capability
Solution Approach 2:
The patent introduces thermoelectric cooling elements as intermediary components between the power conductors and the cable jacket. These intermediaries actively manage heat transfer, allowing multiple cables to be bundled together while preventing heat accumulation through controlled thermal conduction and active cooling
3Ease of manufacture
If standard cable jackets are used without heat dissipation features, then manufacturing simplicity is maintained, but heat dissipation capability is insufficient leading to safety concerns
Solution Approach 1:
The patent merges the protective jacket function with active thermal management by integrating thermoelectric cooling elements and heat dissipation features directly into the cable jacket structure. This combination creates a multi-functional component that maintains manufacturing simplicity while adding sophisticated heat dissipation capability through integrated cooling channels or TEC modules
Solution Approach 2:
The patent employs composite material structures in the cable jacket, combining traditional insulating materials with thermally conductive materials and phase change materials. This composite construction maintains the ease of manufacture associated with standard jacketing processes while dramatically improving heat dissipation capability and thermal management
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 active cooling elements effectively dissipate heat, reducing operating temperatures and preventing fire hazards while allowing for a higher number of cables to be safely bundled, maintaining data transmission performance and extending cable lifespan.
Implementation Method 1
thermoelectric devices employing the Seebeck, Peltier, or Thomson effects
Implementation Method 2
thermoelectric devices employing the Seebeck, Peltier, or Thomson effects
Implementation Method 3
thermoelectric devices employing the Seebeck, Peltier, or Thomson effects
Data Source
AI summary
To this end a cable is provided for tandem communication and power transmission. The cable has a plurality of twisted pair conductors, a jacket surrounding said twisted pair conductors, and at least one active cooling element. The at least one active cooling element is configured to provide a thermoelectric cooling effect to the cable when one or more of said plurality of twisted pairs are employed to transfer electrical power in a power over Ethernet application.