The battery management, the use of lithium-ion battery designers have a variety of options. For example, some lithium-ion battery monitoring equipment containing information characteristics, can be reported has been the charge and discharge cycles. Such information in a number of important medical equipment plays an important role. There are two basic ways to monitor power consumption: based on voltage and Coulomb counting. The combination of the two technologies solutions for its accuracy up to 99%. broaden the product market, and ultimately to consumers, health professionals and patients treatment benefits.

High temperature resistance, the lithium ion batteries in 40 ° -45 ° C under high temperature conditions, the performance is better than other batteries. SLA and NiMH batteries in high-calorie environment does not work. This became their first aid kits for use in a limiting factor, because at this time, the user can not save their portable devices at low temperatures. Power monitoring devices can provide end users with some information, such as the battery is expected to use the time. Management features introduced largely clear assessment and battery charging program implementation.

In choosing the best power source for portable equipment program, it must be the total cost and overall performance evaluation. A high-voltage lithium-ion technology feature reduces the battery usage, thereby reducing the cost of the battery pack, and make the use of nickel-art battery roughly. In addition, the lithium-ion battery suppliers increasing use of new materials to reduce battery costs.Lithium-ion batteries, small size, light weight, high energy, long cycle life, good durability, high voltage and heat resistance and good to have a potential advantage. Medical electronics manufacturers can take advantage of these features.
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Strategically, we recommend that investors remain cautious due, as the broader market rebound weakness, based on past experience, up narrow space, the market may be re down to seek support at the bottom. So if you still have next week if the market rally, investors can appropriately reduce the position in order to release funds to cope with the possible decline in the low to cover short positions, reducing ownership costs. For the more aggressive, ready to Bo rebound investors, we recommend attention to position control, Kuaijinkuaichu attention to those recent trend of strong, stocks sexually active, elasticity stocks.

Plate, we recommend investors to appropriate the new energy sector, focusing on the lithium battery industry. End of November last year, Chinese government's foreign solemnly announced that by 2020 China carbon emissions per unit of GDP will be higher than 2005 levels by 40-50%, while in the same year in December in the Danish capital Copenhagen global climate summit failed to reach a valid and binding The agreement, however due to climate warming emission reduction requirements but it is the common aspiration of all mankind, the future emission reduction efforts will not be frustrated because of this climate conference weakened.

For international obligations, the Chinese government has always been true to its word, line must be fruit, 2010 will be China's low-carbon economy era horn sounded to enter the first year of the new energy is a major component of a low-carbon economy can be expected over the next decade, the new energy industry in China will explode, the economic structure of the industry in China will occupy an important strategic position. New energy industry involves many sub-sectors, we recommend investors to focus on the lithium battery industry. so the future stock price of these companies there are a few main upward wave market.
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Laptop plugged in during use or not to pull out the books in the end? Why? Laptop battery maintenance is good if you can use up much time? And so on questions raised from time to time there are laptop users. Here is my order for everyone laptop battery correct use. Laptop battery uses a long time, it is often sufficient dissatisfaction, or even show damage, so you must pay attention to when using some maintenance tips: Regardless of your notebook to use lithium or NiMH battery laptop battery, battery power as possible to the base use exhausted after the full (capacity less than 5%), which is the best way to avoid the memory effect.

In fact, lithium-ion batteries also have a memory effect, but much smaller than the nickel-metal hydride batteries nothing. But note that charging the battery, try to avoid too long, the general control within 12 hours. Laptop battery life not by the length of the total use of time, but by the charge and discharge times to decide. Here the importance of maintenance is the notebook. If the battery is always attached to the laptop without taking off, then turn off the machine and remove even after AC power, the battery does not like the thought kept as fully charged state.

 To do this, use the AC external power supply is best to unplug the battery or laptop battery life prolonged fever state of its impact. To maintain the battery, long-term without charge and discharge at least once a month to ensure that its activity. In the custody of battery when there is a need to pay attention to. Currently, the vast majority of notebook uses lithium-ion batteries if not using, often prone to the phenomenon of excessive discharge, may no longer be laptop battery. In order to prevent excessive discharge,  and then once every six months, and then half of its electricity charge to the state.

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over discharge, over-current and over-temperature, etc. problem, so that the battery was seriously hurt, battery safety dropped significantly shorten the service life, even battery fire, explosion and other accidents have occurred. Adapt to the characteristics of a group of power lithium battery application technology and equipment, is an effective solution to a set of power lithium battery and a shortened life safety issues and effective way.Current power lithium battery industry has entered the construction industry and large-scale popularization and application of a new historical stage.

With modern power electronics and control technology, the rapid development of technology has undergone a two-stage charging constant current charging multi-stage constant current charging → → → constant voltage charging current limiting charging several stages of development. Charging equipment also experienced a vacuum tube rectifier and selenium rectifiers mercury arc rectifiers → → → silicon rectifier silicon controlled rectifier → frequency switching power supply charger several stages. As digital technology and computer control, especially embedded microcontroller technology rapid development,

Power lithium battery is completely different from the traditional lead-acid batteries of a type of batteries, the charging and discharging of lead-acid batteries are much more stringent than the requirements: According to the U.S. U? S? A Popypore Council President Dr. Zhang Zhengming findings, manganese Lithium battery charging voltage should be limited to within 4.225V ~ 4.250V, if more than 0.085V, the battery can cause damage. Excessive overcharge, over-discharge, over-temperature and over-current, will lead to significantly shorten the life of lithium battery power, or even fire, explosion and other accidents.
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2.3 lithium-ion battery characteristics and prospects, (A) single battery voltage up to 3.7V, nickel-cadmium batteries, nickel metal hydride batteries 3 times, nearly two times the lead-acid battery, which is higher than the energy of lithium is an important reason. Therefore composed of the same voltage battery pack, lithium battery will be considerably less than the number of series of lead-acid batteries and nickel-metal hydride batteries. If the battery in the greater the number of cells, individual cells in the battery pack consistency requirements of the higher life of the more well done.

in the actual process of using the battery pack problem analysis, generally is one of the two a single battery problem then leads to the entire group of problem with the battery, it is not difficult to understand why more than 36V lead-acid batteries 48V lead-acid batteries feedback to be high, from this perspective is more suitable for power lithium battery. 36V lithium such monomers only 10, the 36V lead-acid batteries to 18 unit cells, the three batteries of 12V, 12V lead-acid batteries and each single cell that has six six single cells components.volume of lead-acid batteries half to one third.

    (2) light weight, high energy, high 150Wh/Kg, is 2 times the nickel-hydrogen batteries, lead-acid battery 4 times, so the weight of lead-acid batteries of the same energy-third to one-fourth, From this perspective lithium resources consumed less, and because lithium manganese oxide elements used in more reserves, so the relative lead-acid, nickel-metal hydride batteries may further price increases, but the cost of lithium batteries is further reduced. Lithium-ion batteries for electric bike weighs 2.2-4 kg, lead-acid battery weight 12-20 kg, lithium weighs about a quarter to a third of lead-acid batteries.
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2 battery management systems and charging machine coordination series charging, the battery management system is state of the battery performance and the most comprehensive understanding of the device, so the battery management systems and to establish contact between the charger, you can make real-time for battery charger information to more effectively address some of the battery charge problems arising, the schematic diagram below.charging process through a communication line to the battery management system and the charger link, data sharing. The total voltage of the battery management system,

Battery management systems and charging mode charger coordination principle is:  single battery voltage, battery current, consistency and temperature, etc.) for monitoring and use these parameters the current maximum allowable charge current of the battery is estimated; the maximum cell voltage,  the maximum allowable cell voltage and the maximum allowable charge current and other parameters transmitted in real time to the charger, the battery charger can be management system provides the information to change their charging policies and the output current.avoid accidents, ensure the safety of charge.

When the battery management system provides the maximum allowable charge current ratio charger designed for high current capacity, the charging machine in accordance with the designed maximum output current charge; when the battery voltage, temperature gauge, battery management system in real-time to detect and promptly notify the charging machine to change the current output; when the charge current is greater than the maximum allowable charging current, charging machine began to follow the maximum allowable charge current, thus effectively preventing the battery overcharge, to extend battery life purposes.
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Mechanical Science Research Institute to the end-user battery maintenance management needs as the goal, the successful development of user-oriented site power battery system quality evaluation system. The system is embedded battery management systems collect and record data system for the support, The system performance of the battery assembly, charge and discharge performance matching system and battery assembly for rapid assessment of the situation, etc., to provide users with reliable data to support the maintenance and management, and provides up to eight kinds of algorithms battery with set of tools.

Static sampling with different voltage values ??obtained, BSMS systems collect and record operating conditions at the user's system battery voltage data, in essence, is already reflected in the actual working conditions of the battery cell electromotive force, resistance, electrical connection, the state of charge , ambient temperature and other complex known and unknown factors related to the comprehensive features of the characteristic parameters. User maintenance work, no specific analysis of the relevant factors. Specific analytical factors but will have incalculable error.

Characteristic parameters of the battery pack using the relative poor and the relative standard deviation, the battery pack balance (including force, resistance, electrical connection, such as the battery state of charge of all the factors affecting performance) evaluated to accurately assess cell system performance and user's actual operating conditions of compliance. Meanwhile, in the actual working conditions collected automatically get each battery cell data, the same battery system as well as data at different times each battery systems have good data comparability and reproducibility.
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If so, choose a notebook when the battery has become a challenge to pick the necessary link. But as a consumer, the most intuitive is the number of cell batteries. Most laptops in the market comes standard with 8-cell, 6-cell or 4-cell lithium-ion battery. One standard 4-cell lithium-ion batteries are often ultra-thin products, and such products but most can choose to have more cores battery for longer battery life. As for the number of two different batteries for notebook products, batteries are generally more than the number of long life.the battery does not like the thought kept as fully charged state.

There are also some better understanding of the laptop's friends in the selection of products will be more focused on the size of the unit mAh battery, mAh battery capacity units, whose Chinese name is mAh. In general, the purchase, many of my friends might think mAh big battery unit will have a longer life time. But the reality is not the case, the laptop battery can often be seen on the 6-cell 4400mAh, 4-cell 2200mAh battery nominal value such as the passage of time we believe that directly determines the capacity of 4400mAh or 2200mAh laptop working hours.and the plastic wrap on a cool place to save.

But in fact not the case, the real master of the battery capacity should be regarded as a unit Wh, whose Chinese name is Wh. Of course, Wh and mAh is closely related to the following formula: Wh ÷ V × 1000 = mAh be noted that the measurement of electrical power consumption of the unit itself should be the power, that is, w.but for now technology for 1000 charge cycles up and down, or can be guaranteed.But note that charging the battery, try to avoid too long, the general control within 12 hours. Laptop battery life not by the length of the total use of time, but by the charge and discharge times to decide.
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Point 2: No, the battery for 10 hours of rechargeable battery to activate the activity, in accordance with normal charge-discharge method for activation. Findings: The author, after investigation, 24 college notebook users, there is a 18 second view, but this is not charging the battery for future use cause any harm, of course, to exclude natural damage factor. The author himself is the case, a new battery when the normal use up to two and a half hours in the past two years now, the battery condition is still very good, is still able to achieve more than two hours, so I have been satisfied.

Recommended approach: I agree with the second view, based on available data indicate that the activation of the battery work should be completed in the factory, laptop battery factory with the small amount of power is to avoid damaging the natural wear and tear to the battery. Activation of the battery protection circuit should be in the absence of circumstances, can the circuit itself with lithium battery protection circuit, this circuit's purpose is to avoid excessive battery charge and discharge, usually after the battery is full, the indicator light turns off when charging.

 the battery can not be recharged into electricity, and then you then plugged in to recharge the battery on the face of what use is it? From the battery status can be seen on the battery has no charge, in addition to teach you a simple method you can determine there during the battery charging, the battery charging time will have a fever phenomenon, when the battery is full after one hour (power do not pull the plug), you go try the battery to see if the battery is hot is not hot? Result is definitely cold, because the battery is not charging and discharging state certainly does not heat.
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Various manufacturers generally have their own power management program supplied for making your own laptop performance while maintaining access to the longest battery life, these power management procedures generally provide a large number of custom settings for power management, and some also provide battery calibration feature, you can display the actual power and battery charge and discharge times, Compaq, Toshiba, IBM and SONY's power management program is one of the best. IBM's power management program can also automatically diagnose your battery status and use different colors, very advanced.

There is also a problem is the in the battery have a certain After aging, Battery to up 0% can also use half-hour or even 1 hours, or the yes electricity and 30% on the automatic shutdown of the uncommon instances, this is because the Windows power management design is not compatible with all batteries due. Especially in the secondary laptop battery is more likely to have this problem. This does not mean that the battery problem, it is best to make their own with Battery Mark or PCMark2002 test to determine the actual time (need to turn off all power-saving options to avoid Windows wiseacre intervention).

Different laptop charging time, Dell laptop parts can in one hour quick charge 90%, IBM charging is slower (even open the quick charge function), but for all laptop computers, charge off all the fastest way. Because in the shutdown the time power adapter All currents are used for charging.For long-term use of alternating current users, we recommend a thorough monthly charge and discharge a battery, so you can keep your battery in the best condition, but do not do a thorough frequent charging and discharging operations, this will make your battery life shortened.Even under the most standard way to use the battery, the battery will still wear and tear, it is because the lithium battery will be aging, as we ourselves would even care, no matter how old the same ......
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