Xiaomi is rumored to be presenting a folding smartphone device called the Mi Mix Fold. Not reluctant, Xiaomi also explained how they solve problems related to how the heat dissipation technology they apply to their foldable cellphones.
In a post on Weibo, Xiaomi explained that one of the problems with folding smartphones is the ability of the device to dissipate the heat in its folds.
Another problem is that the imbalance lies on the underside of the device which contains the SoC. This is normal, considering that this section always accumulates a lot of heat.
In the Mi Mix Fold, Xiaomi has developed the “Butterfly” heat dissipation technology which can dissipate heat from one side of the phone to the other through the applied hinge mechanism. This means that the cooling area is much larger than that of a non-foldable smartphone.
Mi Mix Fold uses a combination of liquid cooling, thermal gel, multilayer graphite sheets, bendable graphite sheets and copper foil sheets. This gives the Mi Mix Fold a heat dissipation area of 22,583 square mm.
In order to ‘bridge’ the two sides of the phone for heat dissipation, Xiaomi developed a “heat transfer tunnel”. This section uses a curvature-resistant graphite material.
Xiaomi says this material only loses 3-5% of its ability to transfer heat after being bent 180 degrees 200,000 times.
Xiaomi explains how the Mi Mix Fold improves heat dissipation
The image above shows the process required to make graphite bendable. This involves several manufacturing processes.
The Xiaomi Mi Mix Fold is expected to go on sale in China starting Friday 16 April. The smartphone is powered by the Snapdragon 888 chipset, has an external 6.52 inch screen and an 8.01 inch internal folding screen.
The battery has a capacity of 5020 mAh and is supported with 67W fast charging, 108MP main camera, 13 MP ultrawide camera and 8MP telephoto camera.
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