Lightweight, let the laptop against the invasion of the tablet more than a weight. For this reason, the product of the light and thin revolution, Superbook, is even more rigorous and light, and is now advancing toward the thickness of 10 mm. However, in order to achieve a thin and light body, it is necessary to cooperate with design, materials, manufacturing, etc., especially on the basis of the existing industrial level, due to the limitations of materials, processing difficulties and other aspects, the production of superbooks The difficulty increases rapidly. When the conditions are not mature, if you want to catch the ducks on the shelves and pursue the lightness and thinness of the products, it will often cause many problems.
At the expense of firmness
Using a metal material, is there a gold body that is not bad? This is not the case, although the strength of the aluminum alloy casing that is commonly used in the super-book is stronger than that of the plastic materials such as ABS used in notebook computers. If you want to have enough strength, even if it is metal, you need to reach a certain thickness or use alloy materials, otherwise it will pose a safety hazard. A can is an example. It is also a metal aluminum product, but when it is pinched, the strength is obviously unreliable.
In fact, the problem of insufficient strength of the outer casing has been revealed in some superbooks. For example, many users report that the HP ENVY6 series superbook is prone to water ripple on both sides of the screen when opening the screen. This is the strength of the A-side top cover. Insufficient performance. At the same time, the ENVY6 series reduces the thickness of the screen surface, and its top cover adopts a flat structure, unlike other ultrabooks, which use a thin, intermediate thick "eggshell" structure. When encountering such a notebook computer, the user should avoid squeezing the superbook during carrying and using, and if not paying attention, the super LCD screen may be fractured.
According to industry insiders, the problem of insufficient strength often occurs in ultrabooks where the thickness is close to the critical point, such as a dozen millimeters thick, using a traditional metal material as the outer casing. After a series of thin and light measures, the thickness of such superbooks still exceeded the standard, so the manufacturer began to use the idea of ​​the shell to compress the thickness of a few millimeters. However, this did not meet the user's thinner requirements, but left behind. A big hidden danger is tantamount to drinking and quenching thirst. The industry believes that it is ok to reduce the thickness of the super-shell, but it must not be used to reduce the strength, using Corning glass, carbon fiber and other materials with higher strength as the outer shell, or to solve the problem.
Too small a volume is not conducive to heat dissipation
If only from the perspective of lightness, Samsung 540U is undoubtedly very successful. After adding 10 touches, its thickness is only 16.6 mm, which is 1 mm thinner than its predecessor Samsung 530U, but its heat dissipation performance is endless. As expected. At full load operation, the outlet temperature is as high as 52.7 ° C, and this is the result measured in the autumn and winter season at a temperature of only 15 ° C. When the ambient temperature rises to around 30 ° C in summer, the poor heat dissipation will not only affect The user's experience with the superbook will also affect the stability of the whole machine.
The poor heat dissipation performance of the super-book is closely related to the pursuit of further thinness of the fuselage, because the thickness of the compression will not only reduce the internal space of the super-book, but also make the airflow difficult, and at the same time use a thinner fan, and the thickness of the fan means that it The airflow emitted by each rotation is also reduced, and the amount of heat carried away by the airflow is also reduced.
According to industry insiders, many superbooks still use a dual fan design when the overall power consumption is not high. In addition, most of the super-books are placed on the top of the notebook computer in a flat horizontal strip. This design is beneficial to disperse the main heat-generating components, avoid heat concentration, and ensure the temperature of the user's hands. Consistent.
Battery life is affected
When Intel defined the ultrabook, it not only required its ultra-thin, ultra-fast start, but also required the battery to have a long battery life. However, after the light and thin became the "main theme", the ultra-long battery life of the super battery was ignored by many manufacturers intentionally or unintentionally. The theoretical life of the early Superbook was generally 6 hours - 8 hours, and the theoretical life time of the ultra-thin super-book, the Acer S7, was only 4.5 hours. When using PowerMark to simulate daily operation, its battery life. Only a short 1.5 hours, such a result, even lower than a lot of conventional laptops, let alone what long battery life.
The reason for this phenomenon is that the Acer S7 uses a battery with a capacity of only 35WH. Although this battery is large in size and occupies more than half of the space inside the S7, in order to pursue lightness and thinness, Acer has reduced the thickness of the S7 mainframe surface to a minimum. In this way, the equivalent volume of the large-scale polymer lithium battery becomes not large, which directly leads to the low capacity of the built-in battery and the inability to achieve long battery life.
The industry believes that under the current technical conditions, the battery is difficult to achieve a revolutionary breakthrough, so the power density of the battery (the ratio of battery capacity to battery weight) is not likely to increase significantly. In this case, compressing the battery volume and weight will inevitably lead to a shortening of the super battery life. At the expense of endurance time, the pursuit of ultra-thin practice can be said to be a misinterpretation of the original definition of Super, affecting the user experience, but also not conducive to the future development of the Super.
(He Xuesong)
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