Manufacturing process Brazed Cold Plates: Multiple metal sheets are fused together through high-temperature brazing (usually vacuum brazing) to form a single-piece internal flow channel and fin structure. This metallurgical bond provides excellent structural integrity.
Embedded tube cold plates: Cooling tubes (such as copper tubes) are typically pressed or bonded into pre-machined slots in the baseplate. A small gap may exist between the tubes and the baseplate, which typically needs to be filled with thermally conductive adhesive.
Internal structure and thermal resistance
Brazed cold plate: The internal structure can be designed with extremely complex and high-density fins or microchannels to maximize the contact area between the coolant and the cold plate material, thereby achieving extremely low thermal resistance and higher heat transfer efficiency.
Embedded pipe cold plate: The flow channel is usually a simple tubular structure. Heat needs to be transferred through the pipe wall and the contact surface between the pipe and the substrate, and the thermal resistance is relatively high.
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