Switch with OptiMOS 3 series MOSFET, they have extremely low on-resistance, conduction losses arising from negligible. Each cell block consists of Infineon's 8-bit microcontroller XC886CLM control, the controller has Flash and 32KB data memory; two CAN interfaces support hardware using ordinary cars Controller Area Network (CAN) bus protocol for communication, reducing the processor load; hardware multiplication and division algorithm unit (MDU) to improve the operation speed. As long as the battery pack out of the current is less than the average balance current, the vehicle can continue driving until the battery runs out the last one.

Since the transformer can be used in both directions, we can balance the situation in two different ways. First of all individually control circuit detects the battery voltage, calculate the average, and then find the maximum deviation from the mean voltage of the battery. If the battery voltage is lower than the average, the use of lower equilibrium (bottom-balancing) method; if the voltage is higher than the average, then the upper balance (top-balancing) method. In one of the battery state of charge reaches the lower limit, the lower limit equilibrium method can extend the working hours of the battery pack.

Primary winding switch is closed, Then switch off the main winding, secondary winding of the corresponding switch is closed (in this case the primary winding 2 of the switch), the energy stored in the transformer to the addressed cell.Each cycle consists of two active pulse and an interval components. In this case the period of 40ms, The design of the transformer frequency should be higher than 20kHz,  A possible solution is to use a differential amplifier array, in order to prevent the magnetic core of the transformer noise is generated by the elasticity. the energy fed into the main winding through a large battery pack.
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6, the battery needs to be charged or put photovoltaic save, Whether it is fully charged or the electric shine preservation is not a good method of storage battery, because the battery discharge photoelectric method saved after a long time after the batteries can cause loss of activity eventually let the battery charge does not power; while the battery is fully Although not let the battery power saving aside,  while fear of high humidity and high temperature lithium battery and should therefore be placed in a cool, dry place, but the temperature is not too low, otherwise the capacity will be greatly reduced.

Storage temperature of 40% state of charge 100% state of charge, about 20 degrees Celsius is the ideal storage temperature. Below a table for everyone to see: the relative percentage of saturation at the time the percentage of the initial value, laptop battery batteries are not free to change the batteries, if you have to change batteries can not, then you go to a professional after-sales service points to replace it. 3 charging time is about 4 to 8 hours in between, depending on battery capacity and plant design varies, charging is completed, the charge indicator turns off or turn green, it is best to unplug the power supply.

7, Electronic Express scrapped add their own batteries, This phenomenon generally occurs in the enthusiast who, because they have accessory for laptop notebook understand, but that this practice led to the battery completely scrapped, because the major manufacturers in the machine factory there are quite a part of doing so will be set up in the factory before a self-locking function, once the batteries out of the control circuit, the circuit enters the self-locking state, only the use of specific tools to unlock, before the control circuit will not work, that is equivalent battery scrap.
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    therefore, may be more attention points to spend a year, or when to buy second-hand can raise the quality of the battery is also good price point.Now laptop batteries are lithium batteries for lithium batteries, run out of battery again for a long time do not have any role in full, or even harmful. Because lithium does not exist so-called "buffer effect", only early nickel batteries have this feature. Laptop battery life is generally only with man-made damage or natural life on. Basically, the battery life are fixed ,300-600 charge and discharge times, generally available for 2 years.
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Myth: When the power is connected, the battery can be pulled or not to pull, Stubbs and not pull depending on actual usage: When connecting the DC power supply without removing the battery on the battery and does no harm, because the battery is fully charged battery will no longer accept any injection, power will turn directly to the laptop all supply system. But when the laptop high-speed operation, internal overheating is best to remove the battery, otherwise it is harmful. Laptop battery basically also two to three years time, basically how much power can not be saved, about and notebook replacement cycle is the same.

    Laptop batteries are put photoelectric save or fully charged, should save? Put long-term preservation photoelectric batteries will lose their activity, and even lead to the control circuit protection self-locking and can not re-use, full power will bring long-term preservation security risks, the best method is to save electricity use to 40% and then stored in the cool, dry place, about 20 degrees Celsius is the ideal storage temperature. Of course, the best month to take the battery out used once, both to ensure the battery good state of preservation, but not so damaged battery is completely drain the battery.
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First, the fast spread of the Internet, communication cost is very low, which means that when a standardized product or service appears, laptop battery can enjoy unmatched by other industries marginal effect. This statement may be a bit boring, we can simply look Bouncing Church and fairy domain these two web games, dozens of the team, a product, service tens of millions of users overnight, two or three million a month income more than ten million profit, which is the marginal effect, which is why there has been a lot of Internet upstart. the Internet's real charm lies in the way of life it brings.

Secondly, the Internet is an intelligent network that can carry, and traditional construction or telecommunications industry than it can carry more imagination, you can explore the infinite space, the new product form constantly replace existing products, here is wisdom the circus. Based on the above two points, the Internet industry is an industry that explore creativity, while providing life assurance. far better than the original version QQ2008 achieve the effect. "This is not a product manager to work in pursuit of reward, he is to help the blind. the pace of work, the positive feedback from users.

In fact, I would say these are not, I would say that every industry represents a way of life, Thanks to endless exploration and competition, the team of output per unit of time, the more easily win in the competition, the Internet will be very great importance to product teams team excitement. Excitement this concept sounds like a bit empty, but when you get closer laptop battery Some teams, and team members to chat, they are flying high morale coded flash of inspiration, or depression, anger passive act, and then look at their outputs, they know excitement for the team is as important as air and water.
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Aspects of the creation of scenarios, depending on the teaching content, design, and the use of different multimedia educational software, multimedia real-life situation arouse students' interest in observation, the use of multimedia software image, animation, moving image, graphic audio and video and Mao situations instead of a still picture in the textbook, The context of the multimedia computer more vivid and more real than textbooks, easier to arouse students 'interest, thus helping to develop students' ability to observe things, and easier to stimulate the imagination of students.

 Laptop battery friendly interface and the use of multimedia software multimedia hypertext structure, teachers can address the actual situation of students, according to the Western Learning, from the individual to the general, from concrete to abstract understanding of the law, the use of different way of seeing, guiding students to observe, to improve the ability of students to observe things, analyze things. At the same time, teachers should actively develop students' imagination, imagine based on the first "bureau said in part", then "overall total" way for students to practice oral presentation.

This will not only implement from simple to complex,  But also to provide students with more practice "about" or "write words" opportunity the initiative the opportunity to practice the language expressed in words. Boring laptop battery Geometer's Sketchpad both create situations while still allowing students to actively participate, they are able to effectively stimulate students' interest in learning, to make abstract mathematical concepts become visual image, Students based on the overlap of two wings of the butterfly in motion phenomenon quickly understand the definition of the "axis of symmetry".
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namely the so-called "stimulus - response system", the cause of learning is considered to be a reaction to external stimuli, but they do not care about the irritation caused by internal psychological process that learning has nothing to do with the internal psychological processes, so as long as the control stimulation can control the behavior and predict behavior notebook battery which will also be able to control and predict the learning effect. This is the basic viewpoint of the behaviorist learning theory. The student's task is to accept external stimuli, to understand and absorb the knowledge of teachers to teach.

 Of Educational Theory community epistemology replace the cognitive regular teaching process, resulting in the vast majority of primary and secondary school teachers do not understand the law of human cognitive learning process, are not familiar with or even fully understand the cognitive learning theory, which acts 'open the door, behavioral learning theory especially prevalent in our country. There are still many schools emphasize students' task is to digest and understand the teacher taught the students as indoctrination object, an external stimulus receptors, previous knowledge and experience of memory.

forgetting that students are subjective initiative, creative thinking of living. Due to the long-term subtle influence of such behavior theory, the vast majority of our students gradually develop a love asked did not want to ask "why", do not know to ask "why" numb habits, and the formation of a blind worship of books and teacher superstition: "are classic books, teacher talk must correct books and teachers can not doubt." such ideas from generation to generation, continue to strengthen, so that students divergent thinking, reverse thinking be bound, was being detained, the courage to break through the traditional.

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Peking University and Beijing Normal University High School pilot opened the BASIC language elective, which is the origin of China's primary and secondary school computer courses and computer education. After the mid-1980s, the international computer education experts come to realize that to master the computer this tool is more important than mastering programming language, rooted on its basis "computer culture" was once depressed. In the 1990s, with the growing popularity of multimedia technology, the campus network and the Internet, "computer culture" argument again fashionable.

the new formulation of the Internet culture (Internet Literacy) or culture (information literacy) in such "computer culture" different but closely related, and this the class new formulation (ie, "Internet culture" or "culture"), laptop batteries fact is rapidly replace the original old formulation - This is a remarkable change. Therefore, in order to explore the essence of this change, a deep understanding of the current network culture "or" the true meaning of the information culture ", for us to identify the nature of the information technology courses and the creation of the objectives of the IT courses,

Be referred to as "culture" in the thousands of years of human civilization in the history of the development of things is not much. The birth of human language gradually formed the national characteristics of the various cultures, different languages ​​invariably produces a different culture. On the contrary, if the use of common language, you can always find a common cultural origins, language was recognized as a "culture", and is the most basic culture.further to meet the challenges of the 21st century, full of inspiration.work and learning methods to lifestyle extensive and profound influence things culture.
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Digital Enhanced wireless communication standard (DECT) is the first cordless phone standard one integrated data applications. In order to ensure the competitiveness of the market, DECT efforts to create an interoperable platform, the platform is able to provide voice and data applications for both residential and commercial markets. According to this strategy, DECT is a fixed network operators to provide a series of infrastructure to enhance its competitiveness.users will also benefit from the wide range of new services and applications.

        The same time, Their cordless system is no longer only provide voice services, laptop battery also will provide them with data and commercial applications. Open data access protocol (ODAP) was recently approved by the European Telecommunications Standards Institute (ETSI). The ODAP this new interoperable application platform, DECT has a foundation laid for future innovation. Industrial control, device management and storage management is only a part of the functionality of the applications, and these applications will be able to help enterprise customers optimize their business performance.

        And, DECT has been considered as one of the IMT2000 five air interface. Laptop battery short, DECT is a developing low-cost, mass-market wireless voice / data communications technology. In addition, DECT is the only one that can be applied to the wireless access technology for local area network (LAN) and a public network for transmitting data simultaneously. Current speed is limited in a local area network (LAN) using DECT is an additional feature of the small office and home office (SOHO) applications. Foreseeable DECT technology improved, we can make a longer-term vision that DECT will be equally competitive.
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reconfiguration or multi-mode terminal technology, support intelligent call and session admission control technology, business, the power of distributed processing technology, wireless optimal use of resources and achieve the goal of maximizing system capacity . JRRM covers the various functions of the original radio resource management.Suitable for tightly coupled heterogeneous interoperability mode, shunt function. Future JRRM model is no longer confined to a single, centralized management, but the hierarchical management can be centralized, distributed and everything in between.

        JRRM mainly includes two parts: the joint session admission control (JOSAC) and joint resource scheduling (JOSCH), including optimal spectrum efficiency of the heterogeneous network, laptop battery handle various types of service bearer as well as user and business of various QoS requirements, a variety of mixed traffic flow of adaptive scheduling. Main JRRM design has two basic characteristics: JRRM terminal and even the network reconfigurability, thus able to meet demand for integrated management of the access permission control and joint resource scheduling [7].

        Access selection (MRAS) as a key JRRM technology, dynamic management of terminal access to one or more different wireless networks, effective use of multi-access gain. Multiple access gain brought by the multi-access selection includes two aspects: diversity and multi-access multiple access merge. In addition JRRM through load balancing and dynamic spectrum allocation [8], making more of the available wireless networks adaptive allocation of resources in a coordinated manner.but also for further function to achieve interoperability and technological innovation to provide the conditions [10-11].
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In order to increase the security of wireless networks, companies can use the "user-based" rather than "based on the device MAC address authentication mechanism. In this way, the laptop battery, even if the user's laptop is stolen, thieves not have a laptop user's user name and password, can not access the network. This method is simple, at the same time will reduce the administrative burden, because there is no need to manually manage the MAC address table, but companies need to evaluate and deploy the AP to support user-based authentication database. The validation database you can locally within the AP for maintenance.

This multi-level strategy, so that each user has a unique key, the key can often change. Hackers encryption mechanism, and obtain access to the network, but the the hacker acquired key valid for a very short, thereby limiting the potential damage. This method because of its design dynamic key management function within the AP, thus simplifying the administrative burden of the ever-expanding IT resources. Compared with the 128-bit shared key encryption technology, dynamic key management function is more powerful, often changing the key to further increase the difficulty of hacking system.

Specifically, users only need to take the following measures to wireless network security risks can be greatly reduced. First, control the wireless client to achieve the standardization of WLAN cards, laptop battery to prevent the WLAN card has been any changes; treated like the Internet, to treat WLAN, WLAN and wired networks install a firewall to prevent unauthorized WLAN users to the wired sent over the network Layer 2 packets; Third, is to protect the access point, the access point is hidden in places not easy to find, prevent illegal tampering; prevent radio waves "leak" into the outside of the site.
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