Serval common used heatsink design for power supply device
With the continuous development of electronic technology, the thermal power consumption of high-power devices is increasing and the heat flux is increasing. The heat dissipation design of products has a crucial impact on the reliability of products. In order to conduct a good thermal design for high-power devices, it is necessary to first understand the thermal performance indicators of the power devices, and then through the selection of appropriate heat dissipation methods, the correct air duct design and the necessary optimization analysis of the heatsink, finally, the thermal heatsink is installed in a standardized and correct manner to achieve the best thermal effect.
There are serval common used thermal heatsink design for power supply device which can well balance the cost and the thermal performance :
Crimp Fin heatsink:
As a traditional production process for high-power heat sinks, crimp fin heatsink is commonly carried out through tight fitting riveting teeth. But this can cause potential heat dissipation risks such as fit gaps and loose teeth. In recent years, some manufacturers have introduced various new media connection processes through technological innovation, such as using high thermal conductivity epoxy resin bonding, brazing, soldering, etc., greatly improving the reliability and stability of heat dissipation and avoiding existing risks. The crimp fin heat sink has dense fin , small fin pitch , flexible height and width, suitable for different usage spaces, small volume and light weight, making it an ideal choice for high-power device heat sinks.
Cold Forging heatsink:
Cold forging is a technical process for forming and forging profiles below the recrystallization temperature (generally referred to as room temperature). Cold forging materials are mostly aluminum and some alloys, copper and some alloys with low deformation resistance and good plasticity at room temperature. Cold forging can cause work hardening (strain hardening) of profiles during processing, which can increase strength and hardness. The radiator adopts cold forging technology for integrated design and production, with low thermal resistance and good thermal conductivity, effectively ensuring timely heat export and achieving the ultimate heat dissipation effect. In addition, cold forged radiators have good mechanical properties, high productivity, and high material utilization, making them particularly suitable for large-scale production, thereby reducing production costs.
Die Casting heatsink:
Die cast heatsinks are an economical and efficient choice for many special shaped radiator applications. These application scenarios are weight sensitive and have very complex geometric shapes, which cannot be replaced by traditional radiator solutions. If CNC machining is used, not only will the labor cost be high and the processing time be long, but also a large amount of materials will be wasted. Die cast radiators are produced in net form, requiring almost no additional assembly or processing, and can form very complex features, meeting the requirements of large-scale production.
Aluminum Extruded heatsink :
Aluminum extrusion is a plastic processing method that applies strong pressure to the aluminum billet placed in the mold cavity (or extrusion cylinder), forcing the aluminum billet to undergo directional plastic deformation, extruding from the die holes of the extrusion mold, and obtaining the required cross-sectional shape, size, and certain mechanical properties of parts or semi-finished products.
Skiving heatsink:
Skiving fin heat sink is known for its high density and pitch/height ratio in thermal industry.Skiving process is using a cutting tool to bend the fin by the certain pitch which can produce the very thin and high density fins, so the skiving fin heat sink has more surface area to transfer more heat; And as there is no interface between fin and base, the thermal conductivity efficiency is also improved. Due to it's high reliability and stable structure with excellent thermal performance, skiving heatsinks are widely used in the production of high-power heatsink .
