March 10, 2021
Characteristics of aluminum
Many of you might just associate aluminum with light weight but in fact aluminum is more than that ~Aluminum is a excellent material to absorb heat and dissipate heat as well.
The reason modern motors case are made of Aluminum Die-Casting is because it can achieve light weight and create heat dissipation fins at once, even without the fins the material itself dissipates the heat in a incredible speed.
As we can see from the Teslarati website the disassembled Tesla aluminum Die-Casting drive motor shows aluminum cylindrical studs, What is it for ? the answer is "HEAT EXCHANGE". Besides the difficulty of manufacturing cylindrical studs design, this cylindrical design is the BEST heat exchange design you can have.
No matter the heat or cold in air/liquidus form it is a none-directional cooling design.
A decade ago we were determined to find out the best design so we performed a series of cooling design experiements, cylindrical stud design exhibited excellent cooling capability.