Electrodeposited Heatsink Structure With Integrated Foil Cathode
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Solution Overview
Problem
Conventional electrochemical deposition manufacturing processes face challenges in making cathodes and are not fully utilized to create parts with complex features, and existing cathodes are not integrated into the manufactured parts.
Innovation Solution
A method involving a cathode with a metallic foil supported on a build plate, connected to a deposition anode array, where electrical energy is transmitted through an electrolyte solution to deposit material onto the foil, forming a heatsink with features like fins and reinforcement structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional electrochemical deposition manufacturing processes are used, then material can be deposited onto a cathode, but the cathode cannot be integrated into the manufactured part and making the cathode is difficult
Solution Approach 1:
The cathode and the manufactured part are merged into a single integrated structure. The metallic foil serves as both the cathode for electrochemical deposition and as an integral component of the final heatsink part, eliminating the need for separate cathode fabrication and integration steps.
Solution Approach 2:
The metallic foil performs multiple functions: it serves as the cathode substrate for electrochemical deposition, provides electrical conductivity for the electrochemical reaction, and becomes a structural component of the final heatsink. This multi-functionality simplifies the overall manufacturing process.
2Adaptability or versatility
If conventional electrochemical deposition processes are used, then parts can be manufactured, but complex features with difficult to manufacture characteristics cannot be created
Solution Approach 1:
The deposition anode array is segmented into multiple independently controllable electrodes positioned at different locations and orientations. This allows selective deposition of material in specific areas to create complex geometric features like fins, recesses, and reinforcement structures that would be difficult to manufacture using conventional methods.
Solution Approach 2:
The deposition anodes are positioned in three-dimensional space around the metallic foil cathode, allowing material to be deposited from multiple directions simultaneously. This enables the creation of complex 3D features with varying geometries that cannot be achieved with conventional single-direction deposition methods.
3Temperature
If traditional heatsink manufacturing methods are used, then heatsinks can be made, but thermal resistance is higher and heat transfer efficiency is reduced
Solution Approach 1:
The electrochemical deposition process creates a metallic foil structure with controlled porosity and high surface area. The deposited material forms a complex network of fins and structures that increase the effective heat transfer surface area while maintaining low thermal resistance pathways for heat conduction.
Solution Approach 2:
The electrochemical deposition process naturally forms curved and rounded features in the deposited material, creating smooth transitions and continuous thermal pathways. The curved fin structures and rounded corners eliminate sharp discontinuities that would act as thermal barriers, improving overall heat transfer efficiency.
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
Enables the creation of heatsinks with integrated cathodes and complex features, reducing thermal resistance and enhancing heat transfer efficiency.
Implementation Method 1
electrochemical deposition manufacturing utilizes electrochemical reactions to manufacture parts in an additive manufacturing manner. In an electrochemical deposition manufacturing process, a metal part is constructed by plating charged metal ions onto a surface of a cathode in an electrolyte solution.
Implementation Method 2
This creates an electrochemical reduction reaction to occur at the cathode near the anode and deposition of material on the cathode.
Data Source
AI summary
A method of making a heatsink includes positioning a cathode, which includes a build plate and a metallic foil supported on the build plate, into an electrolyte solution. The method also includes positioning a deposition anode array into the electrolyte solution, connecting the metallic foil to a power source, and connecting one or more deposition anodes of the deposition anode array to the power source. The method further includes transmitting electrical energy from the power source through the one or more deposition anodes, through the electrolyte solution, and to the metallic foil, such that material is deposited onto the metallic foil and forms at least a portion of a heat exchange feature of a heatsink. The heatsink includes the metallic foil and the material deposited onto the metallic foil.