According to Science and Technology Daily reported that the French company laptop battery has successfully developed for electric cars lithium-polymer battery.company said the use of this battery-electric vehicles, each traveling 200-300 km before need to recharge a battery while the battery life up to 15 thousand kilometers.

According to Science and Technology Daily reported that the French company has successfully developed for electric cars A42-A3 lithium-polymer battery. The company spent 85 million U.S. dollars, with 12 years to develop this large-scale power battery. BTP-AQJ1 Lithium-polymer batteries previously used in portable computers, mobile phones, digital cameras and other devices, after which the company's research staff is made only of its electric vehicle batteries, its technical performance has been sufficiently validated.
company said the use of this battery-electric vehicles, each traveling 200-300 km before need to recharge a battery while the battery life up to 15 thousand kilometers. Wei Kente's chief administrative officer. Paul said: "The use of such batteries, consumers spent only 1.6 kilometers for every two cents each year for the owner to save about 2,500 dollars in petrol and LCBTP03003 other costs," he hoped that next year in March in the Geneva Motor Show on able to demonstrate this new battery installed in the new electric vehicles. According to the U.S. "Business Weekly" reported that the successful development of this new battery, which can greatly improve the oil - the performance of electric hybrid vehicles to promote more environmentally friendly energy-efficient electric car market.

Based on this principle, lithium battery discharge current should not be too large, if the current is too big, too long duration may cause a chemical reaction and heat intense heat, and even caught fire and exploded.

In fact, publicity about the lithium battery can be fast charging, fast discharge of the concept is relatively lead-acid batteries, just a little faster, but if the lithium battery charge and discharge beyond the limits of the danger might be lurking not far away.

As for the lithium batteries in the end how much suitable current discharge should be practical to decide, but for the vehicle driving cycle, the instantaneous high-current Aspire 1300 discharge are common, this is a test for lithium batteries.

Now, charge-discharge process is controllable, you can manufacturing process, metal powder, dust, wages, and so reduce the risk, but their chemical reactions within the battery yet difficult to control.

From this, the process of lithium batteries in use, is a miniature "volcano", scrapped after the lithium battery seems to be an "extinct." After the BTP-ARJ1 dismantling scrapped as long as the puzzled body, the "five elements" is complete, the chemical reaction will not be interrupted, but levels decline, and hence the battery recycling lithium batteries alone will seal them as dangerous goods.

After analyzing the principle of BTP-APJ1 lithium batteries, resulting in failure factors, R & D, manufacturers need to understand the lithium battery Angels & Demons double face, and the need to find a way to minimize the security risks.

China's new energy vehicles brought a wave of enthusiasm, is making mobile communications and laptop battery mobile had a tremendous convenience of audio-visual aspects of lithium batteries to become the most popular competition and one of the concerns.

However, when more people in the life mileage, battery life and even how to deal with waste batteries and so their brains, a very important fundamental problem seems to have been neglected, that is - it is enough to secure?

March 1978, served in the United States Exxon chemist (engineer) invented Stanley • Weitinghanmu lithium battery, probably did not think the next 30 years, the invention of science and technology to human life in a huge change, and lithium, the lightest metal known from the natural world has become more intimate and human together.

At that time, Weitinghanmu sulfur compounds to do the titanium anode, lithium metal as anode, made of the world's first prototype of a BTP-42C1 lithium battery.

It works by lithium-ion battery positive and negative formed between the current cycle of movement in order to achieve charge and discharge process. Therefore, lithium batteries, also known as lithium-ion batteries.

Few decades, through constant improvements to the anode and cathode materials, smaller and more energy density of lithium batteries, as well as lower prices have been manufactured, the advent of mobile phones, to further promote its miniaturization and lightweight, and later Also popular at the micro-electronic products, such as music players, today is even considered as a wave of strong electric cars inevitable choice.

However, in recent years, mobile phones and music player's battery frequent explosions, it seems that again sounded the alarm - this has brought convenience to people's lives are not imaginary things that seem less secure. Relaxation of the manufacturer quality control it? R & D are some elements of the battery changed? Or are they reserve power and neglects the BTP-44A3 importance of security?

A cell phone lithium battery contains lithium metal less than 5g, one of the most original electric mini-cars, if the rechargeable batteries 30kwh above, the battery contains lithium metal is about 50kg or so, cell phone batteries will cause the explosion is still scared of, a group of mini-cars In case the battery if it occurs, the consequences would be inconceivable.

China has occurred in lithium batteries installed in electric vehicles, the parking in the garage at night suddenly caught fire, together with the vehicle reduced to ashes along with the situation, a few months ago there have been spontaneous combustion phenomenon of hybrid buses, but the discovery and Disposal early, before major damage is not brewing. Obviously, contingency planning is the battery, electric vehicle industry's responsibility.

In fact, the BTP-550P lithium battery there is an explosion potential safety problems, many reasons to be cracked, but apparently all the constituent elements of its own can not avoid implication.

Is usually a lithium battery cathode, anode, diaphragm, electrolyte, monomer packing five major elements. At that time, Sony developed the first commercial lithium batteries, the cathode of lithium compounds from lithium cobalt oxide is made, but because of cobalt are rare, then use more manganese, iron, vanadium, nickel, etc. as well as the polymer composite material , and even the air as the electrode of the medium, different cathode materials, energy, security, operating voltage varies.

Negative from the graphite and various hybrid, synthetic, composite materials to play. Graphite elements space, storage space for the lithium-ion lattice.

Charge, the cathode of lithium-ion transfer to the negative most of the box, when the negative electrode on the excessive accumulation of lithium-ion to a certain limit, lithium-ion will overflow, generate dendritic crystal growth and spread of these crystals, punctured diaphragm, so that positive and negative contacts, so short-circuit occurs, this time short-circuit will instantly release a lot of heat, so easy to heat and combustion of the electrolyte boiling up, the final explosion, known as "hot fail." In addition, high temperature, piercing, breakdown, metal filings connectivity, and BTP-73E1 vehicle collisions caused by compression of the battery have become positive and negative short-circuit in case of thermal failure causes.

Thus, while there are some issues as the use of solid polymer electrolyte lithium batteries, which do not reduce the leakage possibility of an explosion, but because of lithium battery is the outside world through an internal chemical reaction into electrical charge into chemical energy stored into the battery, Similarly, chemical energy by chemical reaction into electrical energy output, so that the process will produce temperature, once the temperature is too high, the danger was also followed.

Moreover, lithium battery itself has a self-discharge characteristics, that is, the battery does not charge the outside world, letting go of the conditions, it is within the ongoing chemical reactions of varying degree of speed, battery-performance self-discharge rate is low, and vice versa, "self-discharge rate "is high. This internal chemical reaction on the table would make a music player, since the explosion took place in the off state.

Heat charge and discharge heat-absorbing characteristics of a BATCL50L lithium battery, but sometimes too fast charging will be the phenomenon of fever, it is because the chemical reaction was too late to chemical energy into electric energy, discharge the battery temperature is too late to chemical energy into into electrical energy caused by, so charging management system generally safe, but there might be problems when the discharge.

Based on this principle, lithium battery discharge current should not be too large, if the current is too big, too long duration may cause a chemical reaction and heat intense heat, and even caught fire and exploded.

In fact, publicity about the lithium battery can be fast charging, fast discharge of the concept is relatively lead-acid batteries, just a little faster, but if the lithium battery charge and discharge beyond the limits of the danger might be lurking not far away.

As for the lithium batteries in the end how much suitable current discharge should be practical to decide, but for the vehicle driving cycle, the instantaneous high-current TravelMate 290 discharge are common, this is a test for lithium batteries.

Now, charge-discharge process is controllable, you can manufacturing process, metal powder, dust, wages, and so reduce the risk, but their chemical reactions within the battery yet difficult to control.

From this, the process of lithium batteries in use, is a miniature "volcano", scrapped after the lithium battery seems to be an "extinct." After the dismantling scrapped as long as the puzzled body, the "five elements" is complete, the chemical reaction will not be interrupted, but levels decline, and hence the battery recycling lithium batteries alone will seal them as dangerous goods.

After analyzing the principle of TravelMate 4000 lithium batteries, resulting in failure factors, R & D, manufacturers need to understand the lithium battery Angels & Demons double face, and the need to find a way to minimize the security risks.

Such as the tiger lion stage performances, it must be animal trainer to command, the current lithium batteries, "animal" has not been that people understand and master, applied to TravelMate 2300 large-capacity rechargeable batteries and vehicle operating conditions, poor working conditions should be cautious of the deal.

Tuesday tape strong future battles 3100, Shanghai stock market laptop battery turnover of 173.5 billion significantly larger, banking, medicine, fine-tune the drag force upside, while the petrochemical duo Yao City tug support the market, power grids, and other new low-carbon energy, physical networking, energy-saving environmental protection, re - and many other hot blow-hot, Nanjing Chemical Fiber, Desai batteries, 24 subjects in the low-priced shares hit daily limit, effects of individual stocks to continue to make money.

From a technical point of view, a continued rebound in the high jump Xiaoyang, 500 Line and the previous high points are gathered in the 3120 building near the top of the resistance, while the five lines starting upturned, 20,60-line Jin Cha Adds Support ,15-30 time-sharing unilateral offensive slow, but picked up a lot of indicators have strengthened, apparently to control stock turbulence is still long among the short-term do more enthusiasm for the high probability of Wednesday broader market break through resistance at 3120 Grand, New Shenglang still continued, pay attention to A1079 individual stocks wheeled rhythm.

Rebound into what to do, of course, a strong offensive unit! ! From the Buddha plastic, medium-term, Sea King, to Ankai, Jielong, Shenyang Machine Tool and other new Niugu Chong Biao constantly on the main stock contrarian Jiancang most explosive! We concluded the following three categories of small-cap opportunities in the main intervention: ① is a three-than-expected quarterly or annual results for growth (with a high send share transfer), such as auto stocks; ② is the price at the 7-12 per hour, the major shareholder power powerful or the funding of an attractive asset restructuring unit, such as Zhejiang Orient; ③ is hot with the latest technology and is now rising channel A1078 (such as new energy, medicine, material support, networking and so there is a policy theme), could serve as a strong focus on mining stocks .

Nuggets accordance with the above the main line, digging a stall full-year net increase of 300%, is well positioned to shell resource conditions, new energy and new materials lithium + + restructuring potential! The market has not yet been excavated and more heavy GEM equity shares and electronic information leading highlights. The monolithic movements goldfish water trend, short of containing the callback, KDJ low poised for a long time, the new brewing Shenglang burst. Fall in the same time, several "T" word to show strong bargain-hunting account for the influx, DDX last 2 days meteoric rise! Clearly the company about a qualitative change in the fundamentals of funds continued to be excavated, and once the message with the re-launch, or will once again lead to ST-style blow-out Quotes (White's other major shareholder of ST stocks have been achieved from 6 yuan to 18 yuan or blow up to 300 % leap), the current emerging from the unit prices starting at 6 yuan, Pretty Woman has just been ushered A1148 in, transfer of funds preferred positions, patience, a positive layout!
Biao point one: high-tech materials, electronics and information leading + / 300% full-year blowout. Company is China's largest electronic components and electronic-based materials research and production base, high-tech enterprises enjoy the preferential tax policies, has funded more than 95% of the absolute control of three high-tech materials company, its products are widely used in communication networks, aerospace technology, automotive electronics and other fields, the market share of 20%. In the second quarter benefited from 3G, household appliances and other policy support to rural areas under the company's performance began to significantly increase annual net profit is expected to blow up to 300%, and net assets per share reached 2.66 yuan, PB 3 times, even higher than that of some blue chip stocks.

Biao Point 2: late-coming and new energy on the M6091 lithium lead. A 30% stake in the earliest one set of lithium batteries are grade material research and development, production and sales of high-tech enterprises, with a number of independent intellectual property rights, and currently have 100,000 / day lithium-ion batteries, 30 tons / month of cobalt acid anode materials for lithium is the scale of production, the total assets 2 billion, 08 year-end net assets of 120 million yuan of the enterprise and contribute to net profit of 750 million yuan, course ought to internal lithium-ion battery leader.

Biao Point 3: major shareholders shock injection / looking forward to the next a 300% leap. The new major shareholder is state-owned power powerful predators and heavily manoeuvering telecommunications, non-ferrous and a number of leading listed companies, controlling stake, as of the end of 2008, its total asset value of more than 45 billion yuan. SASAC to guide its powerful local injection, and fully displayed to create a new era "aircraft carrier" determination. A series of mergers and acquisitions of assets is estimated in the second half moves asymptotically, in particular, the company has rich land resources, the timely intervention of real estate, will add a new profit growth point; major shareholders also took over shares of another ST has been achieved from 6 yuan to 18 million or blow up to 300% of the BTP-43D1 leap, and the current Unit has also started just 6 yuan will undoubtedly be more wide space.

Biao Point 4: 5 large fund sweeping new entrants 1.5 billion goods, ready for use. Recent Dacheng, China Shipping, China Merchants Bank, etc. 5 Department Fund and the Social Security Fund 1.5 billion grab all the new entrants goods, big money is super-locked chips 35%, chips rapidly assemble. Historical experience shows that the stock must first gather pulled a bargaining chip, big-name institutions such large Progenitors sweep plate, afternoon will up it goes without saying.

"Honesty the saying goes, the sea dragon"! Fundamentals will soon deeply involved in + qualitative + funding the latest hot topics, and recently also heavy GEM equity shares, the latter part of room for growth is very imaginative, power agencies have given "buy", "continue to hold" rating , Pretty Woman-style worthy TravelMate 220 of a strong surge was expected to accelerate.

China National Offshore Oil Corporation is considering the construction of electric vehicle battery laptop battery replacement stations, a move likely to promote alternative energy vehicles in China market.

CNOOC Energy Economics Institute of Strategic Research, director of single-joint-man said the company does not manufacture cars, but can supply energy, is considering the construction of the battery replacement stations nationwide network of possibilities, so that drivers can stop to replace the battery in the battery.

Single-joint-wen pointed out that in China's development depends on the feasibility of charging stations for electrical cars, popular enough to support the new PowerBook G4 15inch business. If gasoline prices remain at 8 yuan per liter (about 4.44 U.S. dollars per gallon) or more, Chinese consumers will buy electric cars, more than the current price premium of about 20%. Another factor is the manufacturer of the battery's ability to manufacture low-cost and reliable.

Shan Lian-Wen added that M7318 CNOOC believe that China's consumers will buy electric cars as an ordinary car fuel supplement to the city to work, or other use of the local trips.
He said, JCI-Saft Armada E500 battery materials into consideration not only the cost but also consider the battery mode of production. He said that the battery manufacturers can learn how other industries can be more efficient production of lithium-ion battery experience.

Andrew said, "We now have an opportunity to overhaul the production of these batteries." "We think we can learn from other industries used in the process technology, to rapidly reduce costs."

Evenly matched with gasoline

He said, JCI's goal is to produce for the use of hybrid or electric vehicle battery packs, allowing consumers to spend and spend three years of the same gasoline engine.

Nissan North America manufacturing engineering and vehicle production MarkSwenson, vice president of engineering, said reducing the 2012 PowerBook G3 model Nissan Leaf electric A1175 car plan involves the cost of manufacture of batteries and battery in the vehicle manufacturing plant will be assembled into battery packs.

Swenson said, "We plan to plant all day uninterrupted production to production facilities enable us to maximize the investment." He said, Leaf North America, but Nissan plans to sell several models of electric vehicles.

A123SystemsInc.'s RicFulop, vice president of business development, said he believed that, as the industry matures, the cost of the battery pack can be reduced by 9% per year. To make a stronger battery power can save some costs, while also optimizing production processes and the use of A1185 high-quality materials to cut PowerBook G4 other costs.

The new energy inside you Which industries do you expect?

Shao Jun: I think the main new sources of energy, then I think the current market laptop battery is big or two solar and wind power, although it has also encountered a number of bottlenecks and problems, particularly in the domestic market demand is not very standardized, or the legislation is not very norms, market demand, not domestic demand is so strong, these are the next step in the follow-up hinder the industrial development. But it does not mean no chance, I think this opportunity is mainly in its upper reaches of some of the core components rather than to do the wind machine, or downstream assembly. In addition to this I am more optimistic than this one is the battery, the battery is actually a very important new energy part of it.

Tencent Finance: China's enterprises in the new energy vehicles there is little chance that an oil?

Shao Jun: I think Chinese enterprises in the car of opportunity for new energy vehicles is very large, because China's traditional automotive industry is very EVO N620C backward in developed Western countries, including behind Japan, a very large gap. However, for new energy vehicles in China, it should be said is the same starting line with the whole world, if the battery in the hands of China some of the core technology as well as low-cost or low cost to do high quality of life, then there may even be a beyond chance.

Tencent Finance: I just heard that now Germany is preparing to set up a fund with the capital, can you tell us about the general progress of the.

Shao Jun: Germany with the capital we are currently actively managed for 500 million U.S. dollars in overseas funds, and now because we have also seen an increasing number of opportunities to domestic, including the introduction of the domestic channel is more and more often, so we are also being to raise a pure yuan fund, the fund gained a lot of our local government support, we have adopted this model of cooperation with local governments, co-founded yuan infrastructure so in the future, or whether it is found that the Presario 1200 project being put in support for the project has a very big help.

Tencent Finance: the formal launch of GEM, and you can not say that about launch of the GEM impact on the area of investment?

Shao Jun: GEM have been waiting for a decade, and we raise yuan funds why are raising one of the reasons is that exit channels, the withdrawal of channels in the country more generally, and including the center panel also includes the Growth Enterprise Market. But the first day of the offering price and performance are also very worried about me. The pricing issue is now 58 times the average of 58 times the appropriate price-earnings ratio, or more than 80%, which is I think that is already too far, so I think I want it to have a more stable development rather than this one twists and turns, and then everyone on this board lost confidence. Overall, the market is a very good help, the United States, the Nasdaq is a very good example.

Tencent Finance: You are very optimistic about China's Growth Enterprise Market?

Shao Jun: I think the venture Presario 1800 capital business is to develop a great need for the GEM, but the GEM is currently such a state of such a surge which there is a certain hidden dangers, and how markets and regulatory agencies working together to make the orderly development of this market is the our industry want to see.

Tencent Finance: We know that Walton co-operation are more with you, could you please describe to us what the situation?

Shao Jun: Walton is Wal-Mart's founding family, this is its top ten richest man in the family are 10,5,6,7 them, so they more money than Bill Gates, who is a strategic co-operation with us relationship, in our U.S. dollar fund which Walton family played a major role in LP, in addition we are also in the field of new energy and retail sectors in the investment, some people have some strategic cooperation. Because we talk about Wal-Mart's Walton family would think, in fact they are very diverse in investment, especially investment in new energy sources is very achievements. For example now the world's largest solar energy company (in English) is a very famous, is the Walton family from the earliest start-ups began to build to the present volume production of solar thin-film batteries. In December Presario 700 and its chief executive will come to us to talk about the direction of co-operation.

Tencent Finance: Germany with the capital in selected enterprises which pay attention to what the details of which companies would be that you selected?

Shao Jun: DT Capital Currently we focus on three major areas, one is new energy, a is the upgrading of traditional industries, an innovative model called model innovation, or scientific and technological innovation to meet domestic demand requirements. I would like to first of all in these three areas which will receive our help, we are also in these three areas which have more experience to help business development. We selected conditions are very strict, but the final analysis, the key is still an old saying, look, look at the entrepreneurs do not have a tenacity of entrepreneurs.

Tencent Finance: Germany with the capital the next few years, what plan?

Shao Jun: Our expansion plans the next few years may be more in-depth into the Presario 900 various second-tier cities in the side of co-operation with the Government, as well as to set up a number of points, I think this is the case is also consistent with a domestic investment in the first-tier cities more competitive, fewer and fewer opportunities, although prices have not have the opportunity to be reasonable, that is, supply and demand. Do not forget that China is a very large country, there are many fast-growing second-tier cities have a lot of opportunities, relatively speaking, less competition, and Germany with the next step is to our advantage, our headquarters is in China's fund, we relatively easy to off-site expansion, this is our next development plan.

Tencent Finance: We know that Germany have a lot of international experience with the capital in the country will also have a lot of experience, this combination is not to your advantage for you in conducting business, what help?

Shao Jun: Yes, I would like to add the vision of globalization, indigenous background and experience to do in China, engaged in this industry is very important, even necessary. Because all the Chinese enterprises are facing competition not only local but global competition. If you have a global vision of the field in the world to your business being put in the words of some Presario 1700 help is needed.

Smart Battery System (sbs) the emergence of an independent battery laptop battery system greatly simplifies the design, so its application has gone beyond the laptop computer field, out now a variety of other applications, such as backup power systems, high-reliability military and aerospace applications, the other Key applications include automotive, security / surveillance / security systems, medical devices, blade servers, telecommunications and portable electronics products

Smart battery using the internal electronic circuits to measure, calculate and store the battery data, it makes the use of power is more predictable and, smart battery there is a significant advantage, and that is to prevent unexpected system downtime

Smart Battery System

Sbs a basic system consists of the following components: System Management Bus (smbus), Smart Battery Charger and Smart Battery

sbs's modular design features make the closed-loop battery ThinkPad X60 charging system become very easy, such a system allows the use of independent battery charger (smart charger), minimizing hardware and software, non-recurring engineering (nre) of the cost of and contributed to a solid system, which is highly reliable battery backup applications is particularly important and integrated into the battery pack in the high accuracy could have been an accurate barometer to monitor the battery, even when the battery is not in the same system, in accordance with the Barometer Battery The actual capacity value of the calibration, thus removing the bias, ensuring accuracy

Smart battery charging and protection of the

Smart battery charger main function is to provide smart battery charging voltage source and current source of intelligent battery chargers by smbus interface and smart communication, and can select the host communication in order to prevent loss of function rather than due to smbus charge watchdog timer continues to run Smart battery and charger to monitor FRU 92P1167 the frequency of the call action, if the battery no longer than 3 minutes, then pause and wait for the battery charger to recharge again requested In addition, the battery can also force a shutdown feature to control the charger, so you can bypass the smbus, to provide redundancy level and let the Chargers know that the battery does indeed exist

Figure 1 ltc1760 for Dual-Battery Systems

In short, when compared with the fixed independent chargers, smart battery charger has the following advantages

① truly plug and play, free from battery chemistry and battery configuration can affect any smart battery pack with any smart battery charger with different chemical characteristics, configuration, and even different battery charging algorithms can be used ThinkPad Z60t without modification for charging circuit
② built-in security features sbs standards watchdog timer and a battery and charger in particular between the "safety signal" interface
③ reliable battery detection system
④ automatic charge management, not the host
⑤ without host intervention, the closed-loop charging system host power measurements in accordance with the need to collect information on

ltc1760 Dual Smart Battery System Manager

ltc1760 is a highly integrated battery charger and selector 3, for the use of dual smart battery products that it is a buck topology switching battery chargers, smart battery standard definitions were consistent with a variety of functions and other new features, such as the input current limit and security restrictions, and so on 3 smbus interface allows ltc1760 to ThinkPad Z61t achieve, such as track two battery's internal voltage and current of the servo-like features, and allows a smbus host either a battery status monitor this servo technology so that the accuracy of the charger with the battery internal voltage and current measurement error of only ± 0.2%

Traditionally, dual-battery system is the order of discharge system, allowing the order of the battery (first consumption of the battery 1, and then consume the battery 2) to simply extend the overall battery ltc1760 analog control using proprietary technology that allows secure two batteries in parallel for charging or discharging Figure 1 is a dual-battery system using ltc1760 a simplified schematic diagram of this structure allows a 50% faster recharge the battery to extend the working hours by 10% In addition, the parallel discharge not only enhance the current capacity, but also reduces the i2r loss and improved conditions at very high load capacity of the voltage regulator to reduce losses 40Y6793 and improve voltage regulation i2r have extended timing solutions, the total discharge time (see Figure 2)

Figure 2 dual battery sequence comparison of the battery charge time

Figure 3 ltc1760 dual battery charger / selector system architecture

● ltc1760 the main features of

① three independent polling battery charger charging requirements and monitor the internal battery power measurements to determine the actual current and voltage (error ± 0.2%), fast, safe and thorough charge
② fast-charge mode can be used to further reduce the recharge time
③ support the battery identified in order to achieve the barometer calibration
④ 3 power supply channel fet diode to allow safe and low-loss and two batteries from the same time discharge dcin
⑤ two fet diode to achieve two batteries at the same time safe, low loss to discharge
⑥ hardware programmable current and voltage security constraints, as well as many other security features to supplement the battery's internal protection circuitry
ltc1760 Although it is sophisticated, but very easy to use in any given design, only identified four key parameters: input current limit sense resistor ricl, current-limiting FRU 92P1125 resistors and matching rilim charge current sense resistor rsense, limited pressure resistance rvlim, short-circuit protection resistor rsc
ltc1760 plus some smart battery, and an ac adapter, you can set up a simple system architecture as shown in Figure 3

● Input Current Limiting sense resistor rcl

As shown in Figure 4, this circuit limits the charge current to prevent the system increases when the AC adapter power overload to set the input current limit, the most important thing is to minimize the wall fitting device rated current limiting resistor can be the next 2-type to calculate the
ilim = Adapter Min Current Value - (Adapter Min Current value × 5%) (1)
rcl = 100mv/ilim (2)
However, the AC adapter can be at least +10% of the current limit margin, so often simply set the adapter current limit value of the actual adapter Rating

Figure 4 input resistance of the circuit should be limited to influenza -

● current-limiting resistor rilim

rilim resistor has two effects First, it tells ltc1760 the smbus interface, the battery charger will be available to the maximum allowable current, any more than this limit value will be replaced by limit values of second role is to make the charger pwm full-scale degree of current and smbus FRU 92P1121 interface, full-scale current-limiting value of synchronization

● limited pressure resistance rvlim

vlim pin to gnd connection between the external resistor value can determine the 5 charger output voltage limiting value of either one (see Table 3) This limit pressure value with the hardware implementation of the method is a kind of safety measures, it can not be replaced by the software means

● Short-Circuit Protection Resistance rsc

Each power supply channel formed by two back to back pfet, these two pfet with the short-circuit detection resistor rsc series battery power path (powerpathtm) switch driver equivalent circuit shown in Figure 5

Figure 5 ltc1760 power path circuit

Short-circuit protection feature is available in current mode and voltage mode short-circuit if the output current exceeds the
Compaq Laptop Battery comparator threshold is longer than 15ms, then disconnect all power path pfet switch, and power_not_good bit similar, if the voltage drops below the 3v time for more than 15ms, it will also disconnect all power path switches, power_not_good bit also be set to remove all power bit can be reset if power_not_good bit power_not_good bit is set, then the charge is also prohibited

● no software

Without the software-based ltc1760 charger at the beginning of the hardware prototype of the system into the integrated circuit will allow access to the battery charge and discharge but in some cases, you can write some software in order to be able to complete the following actions on the host
① directly from the smart battery (that is, as a barometer) to collect "charger status" information;
② Support Battery inspection

Conclusion

Smart Battery System to provide advanced features, with a minimum of design work ltc1760 is a very comprehensive, single-chip dual smart battery system representatives, easy to use, only need to determine the four parameters can be done a complete design, but does not require software code of the device requires only a minimum of nre work, you can form a complete independent Armada M700 battery charger system and work

As the name suggests, the battery protection board is mainly directed against laptop battery rechargeable (generally refers to lithium batteries) the protective role of the integrated circuit board.

Lithium battery (rechargeable type) so in need of protection, is determined by its own characteristics. As the lithium battery material itself determines it can not be over-charge, over discharge, over current, short circuit and ultra-high-temperature charge and discharge, the lithium battery lithium battery components to bring the Federation along with a sample letter to Czech resistance than the protection plate and a current insurance device appears.

Li-ion battery protection function normally to protect circuit boards and current devices such as PTC, or TCO jointly undertaken and completed, protecting electronic circuit board is composed of the -40 ℃ to +85 ℃ environment, time and accurate monitoring of voltage and charge batteries back into the path of current, real-time control current loop off; PTC or TCO in high-temperature FRU 92P1139 environment, bad place to prevent damage to the battery.

Protection panels usually include control IC, MOS switches, JEPSUN Czech Republic than the letter of precision resistors and auxiliary devices NTC, ID memory, PCB and so on. Which control the IC, in all normal circumstances, the control of MOS switch turn-on, so that batteries communicate with the external circuit, and when the batteries voltage or loop current exceeds the set value, it immediately (tens of milliseconds) controls the MOS switch turn-off to protect the safety of batteries.

NTC is the acronym for Negative temperature coefficient, which means that a negative temperature coefficient, the ambient temperature rises, its resistance to reduce the use of electrical equipment or a timely response to the charging device, control, stop FRU 92P1141 charging and discharging of internal disruption.

ID memory, often as a single interface, memory, ID is the Identification of the acronym that is the meaning of identification, storage battery type, production date and other information. Can play the product traceability and application restrictions.

PTC is the English abbreviation of Positive Temperature Coefficient, which means positive temperature coefficient. Professional inside positive temperature coefficient device is usually referred to as PTC, where PTC battery products can prevent the battery temperature of the high current discharge and the occurrence of unsafe, according to the battery voltage, current density characteristics and application environment, PTC have specialized requirements.

PTC is a battery component products where a very important component of the cell responsible for the security of an important mission, its own performance FRU 92P1137 and quality is also a battery pack performance and quality is an important factor.

Protection plate on a single core power protection, protection board design would be relatively simple, highly technical part is that, for example on the power battery protection board design platform for issues to note the voltage, power batteries in use are often required a great platform for voltage Therefore, as far as possible designed to protect boards protect the board does not affect the discharge voltage of batteries, so that the control IC, the requirements of precision resistors and other components will be very high, the general domestic IC can meet the requirements of most products, special imported products can be used, current sampling resistor you need to use JEPSUN Czech resistance than the letter in order to meet the high-precision, low temperature coefficient, no flu demands. Protection of multi-plate design batteries, there are higher technical requirements, according to different needs, design complexity of 02K6651 different products.

Main technical features:

1, overcharge protection

2, over-discharge protection

3, over-current, short circuit protection

Lithium iron phosphate batteries are used to make lithium-ion secondary laptop battery batteries, and now the main direction of motive power batteries, the relative NI-MH, Ni-Cd batteries have a great advantage.

Lithium iron phosphate power battery seven advantages:

1, long life, long-life lead-acid battery cycle life of about 300 times the maximum also 500 times, while the lithium iron phosphate power battery, cycle life of more than 2,000 times, the standard charge (5 hours rate) use, it can 2,000 times. With the quality of lead-acid battery is the "new for half a year old for six months, another half a year to maintain the maintenance," at most 1-1.5 years, while the lithium iron phosphate batteries used under the same conditions, it will reach 7-8 years. Taken together, cost performance will be four times more than lead-acid 08K8198 batteries.

Second, the use of safe, lithium iron phosphate completely solve the cobalt and manganese lithium lithium security risk issues, cobalt and manganese lithium lithium in the strong collision will produce an explosion under the right pose a threat to the safety of consumers, while the phosphorus acid, lithium iron to undergo rigorous safety testing, even in the worst traffic accident will not produce an explosion.

3, can be high current 2C fast charge and discharge, under the dedicated charger, 1.5C within 40 minutes you can recharge the battery is full, the starting current of up to 2C, but now there is no such performance of lead-acid batteries.

Fourth, high temperature, lithium iron phosphate peak heating up to 350 ℃ -500 ℃ and the lithium manganese oxide and lithium cobalt only about 200 ℃. Wide operating temperature range (-20C - +75 C), a high-temperature characteristics of lithium iron phosphate peak heating up to 350 ℃ -500 ℃ and the lithium manganese oxide and 08K8197 lithium cobalt only about 200 ℃.

5, high-capacity.

6, no memory effect. Rechargeable batteries are always in full and hold finished work under conditions, capacity will quickly lower the value of rated capacity, a phenomenon called the memory effect. Such as nickel-metal hydride and nickel cadmium batteries existence of memory, but no such phenomenon of lithium iron phosphate batteries, the battery no matter at what state of charge can be as with the use, without first release finished recharge.

7, green environmental protection. The battery does not contain any heavy metals and rare metals (nickel-metal hydride batteries be rare), non-toxic (SGS certification), non-polluting, in line with European RoHS regulations, for the absolute battery green card. Lead-acid 92P1075 batteries but there are high levels of lead in their waste after it is handled properly, will still be enough into the secondary pollution to the environment, while the lithium iron phosphate material in terms of production and use, are non-polluting, so the battery has included in the "Tenth Five-Year" period of "863" National High-tech development plan, a national focus to support and encourage the development of projects. With China's accession to WTO, China's electric bicycle exports will increase rapidly, and now into Europe and the United States has asked the electric bicycle is equipped with pollution-free battery.

Lithium iron phosphate batteries have their drawbacks: for example, lithium iron phosphate cathode material of the tap density smaller, and so the capacity of lithium iron phosphate battery is greater than the size of lithium cobalt oxide such as lithium-ion batteries, so do not micro-batteries advantage.

Lithium iron phosphate battery Prospects

Lithium as a lithium iron phosphate power battery material is only in recent years appeared to do, the domestic development of a large-capacity ThinkPad R40 lithium iron phosphate battery is in July 2005. Its safety performance and cycle life are unmatched by other materials, which is what power batteries of the most important technical indicators. 1C charge-discharge cycle life up to 2000 times. Single 30V battery over-charging voltage does not burn, puncture does not explode. Lithium iron phosphate cathode material to make it easier for large-capacity lithium-ion batteries used in tandem. Electric vehicles to meet the need for frequent charging and discharging. With a non-toxic, pollution-free, safety performance is good, wide variety of sources of raw materials, cheap, long life etc. It is ideal for a new generation of lithium-ion battery cathode material.

The project belongs to high-tech projects, the development of functional energy materials is a national "863" plan, "973 Project" and "Eleventh Five-Year" high-tech industrial development plan focused support areas. Lithium iron phosphate batteries are used to make lithium-ion secondary ThinkPad R32 batteries, and now the main direction of motive power batteries, the relative NI-MH, Ni-Cd batteries have a great advantage.

Lithium-ion battery cathode material lithium iron phosphate batteries. This new material is not the past, lithium-ion battery cathode material LiCoO2; LiMn2O4; LiNiMO2. Its safety performance and cycle life are unmatched by other materials, which is what power batteries of the most important technical indicators. 1C charge-discharge cycle life up to 2000 times. Single 30V battery over-charging voltage does not burn, not explode. Puncture did not explode. Lithium iron phosphate cathode material to make it easier for large-capacity lithium-ion batteries used in tandem.
1, long life, long-life lead-acid battery cycle life of about 300 times the maximum also 500 times, while the lithium iron phosphate power battery, cycle life of more than 2,000 times, the standard charge (5 hours rate) use, it can 2,000 times. With the quality of lead-acid battery is the "new for half a year old for six months, another half a year to maintain the maintenance," at most 1-1.5 years, while the lithium iron phosphate batteries used under the same conditions, will reach 7-8 years can be said to "tenure." Taken together, cost performance will be five times more than lead-acid 02K6928 batteries.
Second, the use of safe, lithium iron phosphate completely solve the cobalt and manganese lithium lithium security risk issues, cobalt and manganese lithium lithium in the strong collision will produce an explosion under the right pose a threat to the safety of consumers, while the phosphorus acid, lithium iron to undergo rigorous safety testing, even in the worst traffic accident will not produce an explosion worthy of the most characteristic of lithium batteries.
3, can be high current 2C fast charge and discharge, under the dedicated charger, 1.5C within 40 minutes you can recharge the battery is full, the starting current of up to 2C, but now there is no such performance of lead-acid batteries.
Fourth, high temperature, lithium iron phosphate peak heating up to 350 ℃ -500 ℃ and the lithium manganese oxide and lithium cobalt only about 200 ℃.
5, high-capacity, Tianjin, Stellan able to produce lithium iron phosphate power battery renewal line mileage is the same quality lead-acid batteries 3-4 times, and the advantages will enable electric bike at a modest weight under the premise of one charge can be run more than 100 kilometers, for office workers, to recharge a battery to use a week's time. The lead-acid 02K7054 battery electric bicycle is equipped with the weight of the vehicle are not exceeded under the conditions of its battery capacity up to 12Ah (At this point the weight of lead-acid battery has reached 13 kg, while the same capacity lithium iron phosphate battery weighs only 5 kg ), charge a battery up to be able to drive around 50km.
6, no memory effect in rechargeable battery is full and hold finished the regular work under conditions, capacity will quickly lower the value of rated capacity, a phenomenon called the memory effect. Such as nickel-metal hydride and nickel cadmium batteries existence of memory, but no such phenomenon of lithium iron phosphate batteries, the battery no matter at what state of charge can be as with the use, without first release finished recharge.
7, small size, light weight, the same size capacity of lithium iron phosphate batteries are lead-acid battery the size of volume 2 / 3 the weight of lead-acid battery 1 / 3.
8, green environmental protection. Lithium iron phosphate material without any toxic and harmful substances will not cause any pollution to the environment has been recognized as the world's green battery, the battery in terms of production and use, are non-polluting, so the battery also included in the "15" period of the "863" National High-tech development plan, a national focus to support and encourage the development of projects. With China's accession to WTO, China's electric bicycle exports will increase rapidly, and now into Europe and the United States has asked the electric bicycle is equipped with pollution-free battery, with a lead-acid batteries for electric cars is difficult to export, the current new-type ThinkPad A20 lithium iron phosphate material and power battery electric vehicle equipped with widely exported to the European market, choose the lithium iron phosphate as an electric vehicle batteries will be a long-term strategic significance of the wise choice!