Views: 0 Author: Site Editor Publish Time: 2021-03-20 Origin: Site
Without excellent cooling performance, it is impossible to guarantee the continuous and stable output of performance. Especially for game scenes, efficient heat dissipation is particularly important.
Redmi flagship has always attached great importance to the heat dissipation performance of the whole machine. This time, regardless of cost, redmi K30 Pro has almost reached the acme in heat dissipation. It is the first large-area Vapor chamber in the whole industry. In addition, the combination of soft and hard, multi tube, to prevent overheating and frequency reduction.
01 what is a heat pipe? What is VC?
About the heat dissipation of mobile phone, the two technologies of heat pipe and Vapor chamber are mentioned most at present. The core heat sink used in most mobile phones is still the heat pipe.
The basic principle of heat pipe is to use the water in the cavity to change from liquid to gas to absorb heat. When the gas touches the lower temperature area, it condenses into liquid to release heat. The liquid flows back to the heating area through the capillary structure (suction core) in the cavity, and then circulates to take away the heat generated in the heating area and dissipate it.
VC, the abbreviation of vapor chamber, is full name: heat dissipation technology of soaking plate of vacuum chamber. The basic principle of heat dissipation is similar to that of heat pipe, which also uses the phase change of water for circulating heat dissipation.
But the difference is that the heat pipe only has a single direction of "linear" effective heat conduction capability, while VC is equivalent to upgrading from "line" to "face", which can transfer heat to all sides, effectively enhancing the heat dissipation efficiency.
At the same time, the area of VC is large, which can cover more heat source areas.
Both the heat pipe and VC cavity are in vacuum state, which can effectively reduce the boiling point of water, make the phase transition process of gas-liquid conversion occur earlier, and improve the thermal experience of mobile phone in time and efficiently.
02 The main difference between the heat pipe and VC can also be understood as follows: if the heat pipe is compared to a bamboo, then VC soaking board is a bamboo raft with multiple bamboo.
▲ Comparison of heat pipe sizes between redmi K30 Pro VC and friend V30 Pro
03 with the help of graphene + multi-layer graphite sheets to create a three-dimensional heat dissipation system
In addition to the large area of VC, redmi K30 Pro uses up to 7 layers of graphite sheet and 1 layer of graphene sheet in other parts of the fuselage to assist in heat dissipation.
In the key heat source CPU region, one side, Redmi K30 Pro contacts VC through the copper block and the gel scheme, so that the thermal resistance is smaller. On the other side, it is covered with graphene, with an area of 625 mm2. Let the heat get better emission. This design can effectively reduce the surface temperature of the area by 3 ℃ and the core temperature by 14 ℃.
The large area of VC + graphene + multilayer graphite sheets form a sandwich structure of upper and lower clamps on the main board, forming a comprehensive second generation of three-dimensional heat dissipation system.
We measured the heat dissipation performance of redmi K30 Pro
According to the following data analysis, graphite heat dissipation film has great advantages over traditional heat dissipation materials: graphene dissipates heat fastest; when it rises (or decreases) the same temperature, it absorbs (or releases) the most heat; under the same volume, the mass Lighter. All in all, the graphene film has the characteristics of low temperature, small temperature difference, fast speed, short time, rapid cooling, cooling, and small specific heat capacity.
Heat Parameter Data Of Graphene Film
Model | Thickness | Densityt (G/cm^3) | Specific heat | Heat diffusion |
Thermal conductivity |
GP02030 | 30 | 1.98±0.1 |
1.00±0.15 |
800±100 | ≧1400 |
GP02040 | 40 | 1.80±0.1 | ≧1200 | ||
GP02055 | 55 | 1.50±0.1 | ≧1100 | ||
GP02060 | 60 | 1.50±0.1 | ≧1000 | ||
GP02075 | 75 | 1.45±0.1 | ≧1000 | ||
GP02085 | 85 | 1.45±0.1 | ≧1000 |
True Measured Data Of Graphene Film
Model
| (min) | (w) | (min)/(℃)/Heat dissipation temperature | |
(0 min) | (15min) | |||
GP02030 |
15
|
2 |
28.54 | 47.84 |
GP02040 | 47.35 | |||
GP02055 | 46.15 | |||
GP02060 | 45.35 | |||
GP02075 | 44.95 | |||
GP02085 | 43.85 | |||
The previously released Xiaomi Mi 10 has a heat dissipation area of only 3000mm², so the Redmi K30 Pro with a large heat dissipation area and a graphene heat dissipation film has better heat dissipation. The graphene heat-dissipating film effectively improves the traditional heat dissipation method of graphite paper, effectively improves the heat-dissipation efficiency of heating devices such as display screens, CPUs, and batteries of mobile phones, and users will hardly feel the trouble of hot cell phones during use.
In conclusion
The 3435mm² ultra-large area VC + graphene sheet+ multi-layer graphite sheet is a three-dimensional heat dissipation system, which guarantees efficient heat dissipation of the whole machine from the hardware level. Coupled with the precise temperature control of the AI temperature control strategy, the Redmi K30 Pro is always calm and refreshing.