Before Computex carried out , Intel ULV Platform (Ultra-Low Voltage)laptop batteries are few, but only Acer Aspire T Series and Tsinghua Tongfang S30. Just as we expect, as before, ULV notebook platform at Computex Taipei this year, after the full-blown,a variety of ULV full debut such as Lenovo, the Shenzhou, Hewlett-Packard products , approachable price or even a threat to the traditional low-cost in this market, the time of super – low-power thin notebooks become the focus of discussion.ULV low-power laptops have sprung up everywhere, becoming a new growth point of the notebook market, we have seen, including the domestic, Japanese, Korean department, as well as Europe and the United States and others like Dell GK479 are low-power market in the hair strength. Throughout the second half of the entire notebook industry in the Atom access into this market, when cold, ULV notebook much left undone trend.
Intel ULV platform equipped with a new generation of consumer-level Ultra Low Voltage processor with low power consumption, heat a small and so on. The platform is designed using a notebook computer, with a light and portable, moderate performance, low price, Inspiron E1505 battery and so on. At present, the major brand notebook makers have already introduced the basic product. Here, Xiao Bian first to introduce the mainstream under the current ULV processor, and then I will introduce several are on the market selling ULV notebook platform.
mainstream Intel ULV processor performance analysis of
This is the best of times, Intel’s efforts to strengthen market segments, for manufacturers and consumers a variety of processors, the procurement program, corresponding to the different needs of different price points of products, eliminate waste; the same time, this is the worst of times , we find that in the stores in the illegal use of complex processor business models to Kengpian consumers, in order to achieve the maximization of profits, so I, as a meal, we must be right before buying ULV processor platform, a certain degree of understanding.
Upper right figure we can see that the market is divided into the same mainstream platform processor ULV Celeron, Pentium,Dell GD761, Core 2 Duo, the same as with conventional voltage processor core is also divided into single-core and dual-core, while not exactly the same power consumption, we selected more attention when purchased.
Results from the test run, ULV dual-core processor performance advantages are obvious, even if the product is actually low-frequency single-core speed than a lot of strong high-frequency, so here we give priority to recommend dual-core ULV processor, The following recommended products for everyone that we will also focus on dual-core for the recommendation.
Dell KD476 battery (quotations parameter picture comment) is to the ULV Lenovo’s ultra-low-voltage portable notebook computers with the introduction of a new 14-inch, as a ULV platform for notebook computers, the performance is not its advantages, but it’s life long time and lighter weight to compete in the market an important bargaining chip. The models look all-black tone, leather and metal roof texture texture LOGO perfect fusion of classical reflected in the fashion atmosphere. At present,Toshiba PA3399U-2BRS leather texture, and metal roof LOGO
Lenovo IdeaPad U450A golden ratio using 14-inch 16:9 wide-screen design, is equipped with Intel Core 2 ULV SU7300 dual-core processor (1.3GHz frequency / 3MB 2 Cache / 800MHz FSB), Intel GS45 + ICH9M Chipset , 2GB DDR3 RAM, 250GB hard drive and ATI Mobility Radeon HD4330 dedicated graphics card.
Editorial: Lenovo Lenovo IdeaPad U450A-SSE , Inspiron 1300 battery as the ULV platform series models configured in a higher model, its overall performance was still very good, especially with discrete graphics to make it in the performance of graphics processing certain degree of protection. 6 hours long endurance capabilities and 2kg weight make it the best equipment away from the office.

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It not only by the series / parallel connection of several batteries of the circuit itself also includes two substrate modules: the protection of the circuit substrate (Protection PCB) module and the Smart Battery Gauge Board module, and its set of battery design, including the first-class protection protection IC (to prevent dell laptop battery overcharge, over-release, short-circuit), the second-level protection IC (the second time to prevent over-voltage), fuse, LED instructions, such as temperature regulation components.

In the multi-level protection mechanism, even in the power charger, the computer result in an anomalous situation, the dell inspiron e1505 battery can only be converted to automatic protection status, if the situation is not serious, tend to re-plug in after the normal work can not explosion occurred. the face of the notebook battery explosion seriously the fact that journalists ask the power of professionals and a well-known manufacturers of design engineers.

According to analysis, lithium batteries from short circuit or explosion had sufficient cause, the greatest possibility is in the manufacture of lithium batteries, (dell gd761 ,dell kd476 ,dell td347)because of manufacturing process itself flawed, of products that may occur at any time there is a potential safety problems, such as should be insulation between the two poles of metal dust or copper foil and aluminum foil diaphragm perforation of the burr, resulting in micro-short circuits. The former situation is most serious, will be the direct result of a large number of short-circuit and heat production, resulting in vaporization of some of the electrolyte, the battery casing stretch.

In addition, there is a relatively special case, the power charger or computer due to special reasons, lithium batteries to provide instantaneous high-voltage / strong currents have resulted in a serious charge, such as the charging voltage by a sudden rise to 12.6V or 12.9V higher, then there will be a high-charge-flow generation, the internal battery charging circuits should be cut off the current action, but as some rechargeable lithium battery over-voltage, over-current protection design is very weak, which could result in damage to the battery protection IC,

So that the dell E1505 battery will not be harmed by the loss of protection, over-filling around the posterior pole piece on the crystallization of lithium metal needle, piercing a number of micro-point lead to short-circuit, causing the battery temperature gradually increased, until eventually the battery explosion, fire phenomenon, which notebook battery is a lot of “hot” factors.

Add a layer of protective cover

At present, the protection mechanisms from the point of view, the rechargeable battery pack in front of the traditional programs offered by the chip manufacturers are played most precise control of charging voltage and charge current role in the over-voltage and over-current control and did not provide the appropriate solution program. In this way, the protection of the battery pack is entirely dependent on the battery itself, such as over charge protection, over discharge protection, over-charge protection, over-current protection in place, over-temperature protection and so on.

Protection in place because of the need to prevent the first-level protection IC or MOSFET short-circuit fault caused by over-voltage fault, so the second-level protection IC will normally be considered is the battery pack to protect the last line of defense. In this regard, e-convex (O2 Micro) Product Manager洪仕vibration expressed different views, in his view, the protection of the battery pack can be moved forward through the charger attached to the control functions, to achieve the detection and control of inspiron 1501 battery charging action, which will undoubtedly further enhance the level of protection, the use of lithium batteries on the protection of security.

To this end, in the O2 Micro power management for portable devices developed by Cool Charge solution, the integration of a project called Cool Battery Technology battery protection technology, it is the most distinguishing features of traditional chargers generally do not have the OVP (over Voltage Protection) and OCP (Over Current Protection) functions to protect the two batteries, the technology has been embedded among the Cool Charge IC chip.

Cool Charge IC chip used, the power charger to a large extent to assume the responsibility to protect the battery. Subject to the control of the Cool Charge IC chargers, compared with the traditional design (see Figure 1), the need to significantly reduce the external device , Q3 and Q4 save a part of the design, reducing the failure rate. In Q1 retained and Q2 (components to improve the original design) between, Cool Charge IC set up a detection point, by default, the detection point

The voltage and current settings are set slightly smaller than the safety of the battery manufacturers specifications. In this way, the charging voltage or current beyond the Cool Charge IC security settings after the voltage or current, IC disconnect on the control of Q2, before the protective effect of the first battery to cut off the charge; from the detection frequency, the dell inspiron e1505 battery protection detection time interval in milliseconds level, and through the chip to detect, it can easily achieve the level of parts per million seconds, can be used for high frequency detection measured in order to achieve the first step in the protection of the purpose of battery pack. (Source: Zhongguancun Online)

Thin, large capacity, long service life, these are the outstanding characteristics of lithium. For this reason, lithium-ion battery to quickly replace the nickel-metal hydride, nickel cadmium batteries role as portable products such as notebook computer power optimization equipment life. And the near future, there is no new technology can replace the lithium battery power into the mainstream. we have to use the notebook in the usual attention to safety at any time, you can effectively avoid the occurrence of safety accidents.