digital batteries

With lithium ion battery technology continues to update and develop their light weight, high capacity, long life benefits of gradually consumers. A expanded its market from the phone to the camera, DVD, model aircraft, toys and many other areas. In recent years, lithium-ion batteries in power tools, backup power, electric bicycles, light electric vehicles and other heavy equipment for the purpose of increasing concern, but these devices require batteries to high capacity conditions of high power. Lithium-ion Laptop battery can meet the high security, high power, long life basic requirements, is one of many experts and researchers to explore an important issue.

Power-lithium-ion refers generally to the security of the battery due to misuse of power, malfunction, accidents and abuse cause swelling of the battery drain, temperature and pressure the standard, or even explosion and fire incidents, where a user lives and property are threatened. Explosion and fire incidents are the most serious security. Lithium-ion IBM 40Y6799 battery fire of abuse led to an explosion of internal reasons are complex, but most are caused by temperature and high pressure, both of which can be attributed to the cause of most lithium-ion battery reaction thermal runaway, that is, fever. The fever typically include: the electrodes of batteries SEI film decomposition, built-in lithium and the reaction solvent, the decomposition reaction of the cathode material and so on.

Cathode material of lithium manganese oxide is the main advantage of large

In the Food Lithium-ion battery safety issues, the electrode material of the cathode material is the key, but also leads to lithium-ion battery of the main reasons for potential safety issues. Seeking high energy density, high security, environmental protection and Dell Inspiron E1705 battery power affordable materials for electrodes is the key to development. Currently widely used cathode materials are cobalt oxide, lithium, lithium manganese, nickel, cobalt, lithium and lithium iron phosphate, manganese. Data obtained on the point of domestic and international order, the lithium-cobalt may be able to enhance security are not usually used as cathode materials, battery power, the use of lithium manganese oxide is relatively common, cobalt-nickel-manganese lithium household less in China Taiwan and Japan, some manufacturers.

As the manganese rich in natural resources (especially in China, the world’s third largest reserves), low-cost, environmentally friendly, manganese oxide and lithium with a high voltage discharge, proven techniques, Security is good, with a layered structure of cathode material for the other can be compared to support broadband, the discharge capacity, etc., which is currently in the development of lithium-powered batteries, oxide manganese lithium has a great advantage. Although the specific capacity is relatively low, but the larger hp Pavilion dv6 battery power itself does not constitute a material weakness. Cathode materials in lithium manganese oxide for lithium-ion battery has assembled a very good safety and thermal stability. But when there is capacity Lithium Manganese fading fast cycle (especially in high temperature conditions), the short life of a disadvantage, hampering the process actually used.

Lithium cobalt nickel manganese than the benefits of high capacity, excellent cycling performance. Made of Lithium-ion sony vgp-bps5a battery has a very high specific energy, suitable for severe restrictions on weight and size but need high-energy areas. As the use of cobalt, nickel and other metals, nickel and cobalt after the price of lithium manganese oxide lithium cobalt. However, the current nickel-cobalt Applications lithium-manganese can still be assessed on the national implementation of the field is the path through the doped to improve its safety performance, but do not see the magnitude of demand.

Lithium iron phosphate has a rich source of raw materials, low price, high specific capacity and excellent performance at high temperature cycle characteristics and high safety, etc., are very promising battery cathode material power. Lithium iron phosphate toshiba PA3285U-3BRS battery power as a new cathode material for use in the last years of warming. Because of constraint problems patent in Europe and North America can be mass produced in the lithium iron phosphate with small manufacturers, the market fundamentals have been monopolized by a few suppliers. Although the number of local manufacturers of lithium-ion pairs of Energy Research of the lithium iron phosphate and development put into production, but due to technical differences in the processes and quality products mixed.

Additives, electrolyte Security

Power Lithium-ion battery design also affects the safety of the battery.

Only manufacturers in the report positive and negative, the type of binding, membrane assembly process is extremely ear types and welding, packaging forms, by calculating and careful monitoring to make a pole piece within the current allocation is reasonable, the polarization of the apple PowerBook G4 15 inch battery is low, heat Good and effective security. For security reasons, supply batteries are usually designed to take into account when an exception occurs, the system battery, the rate of heat transfer to the environment if the system is greater than the speed of heat, because it determines the probability of a thermal runaway reaction.

To further improve the security of battery power, many manufacturers in the electrolyte of the battery of functional additives. These additives are anti-overload and anti-air, improve the low temperature and the flame retarding effect. It is worth mentioning that the fire is added to the electrolyte to improve battery power as an important direction for security. The purpose of the addition of flame retardants is to increase the index of electrolyte fuel oxygen. As we all know where the material, the oxygen index of more than 27 hours are fireproof material, the current development of flame retardants have been close to or reach that goal. For the electrolyte of the TravelMate 290 battery supply, in the opinion of the individual functional additive in the development of indicators is not difficult, the challenge is to ensure the safety of the electrolyte must be balanced, while conventional performance. Electrolyte to balance the various functions, several functional groups, research additive is composed of research and development directions.

Necessary to protect the plate

To enhance the safety of lithium-ion battery power, the shield is equipped with facilities necessary for the battery. In most cases, welfare committee lithium should have control over working conditions use lithium-ion autonomy to these working conditions, including voltage, current temperature, and thus on. Given the special nature of the use of lithium-ion Dell Y9943 battery, making power lithium-board ion battery protection must be used with matching to ensure the safety and reliability of the entire system. Multi-multi-channel and the adequacy of the Assembly battery, long-term use in the process, necessarily there are individual differences, the protection board (or management system of the battery) to be responsible for the whole group of the battery voltage, current and temperature, and even the ability to monitor, you must obtain accurate and quick action to fully play its role. At the same time, due to the battery performance of individual differences in the same charge and discharge voltage of each cell and the available capacity will be different, with the cycles increased, the difference in battery performance become increasingly important, and would therefore significantly reduce performance of the battery life any shorter. To make the performance of the battery at or near the level of single cell performance must be weighed against the hp PB995A battery so the battery loading and unloading in the degradation of performance unique in the extent reduced to a minimum. Most manufacturers have adopted a balanced plate pricing protection of lithium-ion batteries for maintenance.

Thus, in lithium-ion batteries power the safety factors, the electrode materials is critical, is currently able to guarantee the implementation of industry standard materials to test the system for only one oxide manganese lithium iron phosphate lithium. Manufacturers commonly used in good safety performance and compatibility of electrolyte additives to protect the impetus for greater use of lithium-ion battery. In addition, lithium-ion shield provides a protective function of lithium batteries, can maximize the protection of the safe and reliable power to battery use. Charge equalization ensures that the practical lithium-ion battery to power high-security long working life. From the trend of the future power lithium-ion batteries, protective panels and special equipment for the joint development of the three is a scientific development.

Lithium-ion rechargeable battery of the 20th century, early 90s has been officially practice in less than 20 years, the ability of a rapid increase in the rapidly growing market. It is estimated that in the future be extended to the use of electric vehicles and portable power environmentally friendly storage and other areas.

Lithium-ion rechargeable Laptop battery status and challenges and future directions of development of an interview with the practical stage for many years before the study in the development, known as the father of lithium Parents Chief Executive of Sony, Executive Director of the Spanish-American thread. (Interviewer: Security Hideo)

Q: Lithium-ion rechargeable batteries are used to expand the way up?

West: 90 years in the 20th century, the import issue, we once made home video cameras, and MD players, AV products such as the application of lithium-ion rechargeable battery goal. But this time a very small production alone can fully satisfy the market simply did not anticipate that the IBM ThinkPad T40 battery will become consumer products.

However, soon begin using lithium-ion laptop battery, this market began to grow rapidly. We learn that at that time played a computer makers “from New York to Los Angeles route five hours without charges,” the ads have played an important role. Another period of universal prosperity and promoting the development of lithium-ion rechargeable batteries for notebook computers, and cell phone.

In the 21st century, lithium-ion batteries has begun to have digital cameras, power tools (PowerTool) and game consoles such as adoption. The face of the building society low-carbon future requirements in the time it is estimated will use in future hybrid vehicles, electric vehicles, industrial and domestic fixed power expansion.

Lithium-ion rechargeable Dell Inspiron E1705 battery with technological development, its energy density is increasing each year. To ensure safety measures can be combined. These measures have contributed to market expansion.

Q: To improve the energy density is the key to what? Energy density of the future will be raised?

West: to improve the energy density of batteries, there are two ways. Firstly, to produce electricity without reducing the contribution of the Ministry of material, such as thinning of positive and negative electrodes of the collector body and the diaphragm to reduce the binder and conductive auxiliary material. In short, through the battery designed to improve. But the limits of this approach.

Another method is to increase the active electrode (positive and negative) of the unit of weight or capacity per unit volume. The material development has long been underway. LiCoO2 cathode of lithium-ion rechargeable hp PP2182D battery early start to close at nearly the theoretical limit of the ability to use, totally dependent on improving the performance capacity of the battery anode.

For example, the initial negative lithium-ion rechargeable battery using carbon (coke), its capacity 250mAh / g around the initial charge, discharge efficiency, but about 80%. And now, the negative carbon (graphite) the ability to infinitely close to the theoretical capacity of 372mAh / g, the initial efficiency of over 95%. The energy density, respectively, in the 200Wh/kg early 80Wh/kg to 600Wh/kg present 220Wh/kg.

However, the negative carbon (graphite) under the condition of the sony VGP-BPS2A battery capacity has now almost reached the theoretical limit, it is imperative that the development of a new generation of negative. Other material of tin (Sn) and silicon (Si), the old theory, three times the capacity of graphite, which is 10 times higher than in graphite.

On the other hand, the cathode material in terms of capacity and basic living is not progress. Capacity larger than LiCoO2 cathode are LiNiO2 is expected at the cathode is increased by 10 ~ 20%. However, LiNiO2 the issue of security is very broad, is virtually useless.

Recently, some products are used in lithium-ion battery voltage toshiba PA3399U-1BAS battery to 4.2 V or more, such as 4.4V, the value of discharge current is the same as the energy capacity (Wh) increase cathode material.

As indicated above, at least in terms of negative from the material capacity is correct.

Q: To improve the energy density, should pay attention to what is the problem?

West: using demand side is not necessarily limited to capacity. Emphasis on output characteristics of certain purposes, such as power tools, while the satellite with the auxiliary power focused on the characteristics of the cycle. Sometimes requires cycles to reach 15 million times, far more than the apple iBook G4 12 inch battery from the computer.

Must take to meet the above requirements of materials and design methods. Of course, all properties have excellent battery is nonexistent. The emphasis on performance, depending on what is to decide what battery to use materials and adopt design.

And, not only to meet these multiple requirements, the safety of this important and indispensable element should be compliance. Consequently, the resulting safety factors must be considered and what is the nature of matter and how to develop materials to reduce these factors.

For example, if, as mentioned above, to SI as a negative, the negative capacity of carbon materials can reach more than 10 times, but also consider other features (such as load characteristics and the characteristics of cycle) and security. In addition, if we adopt the SI followed the cathode material of origin in order to maintain a balance with the negative, positive living matter worth increased to 10 times the thickness of coating. But in fact it is not possible.

Given this, only individual to improve the negative, not to improve the characteristics of the TravelMate 290 battery itself, but also need to re-consider the positive electrode, electrolyte and separator and all other materials.

Finally, to ensure the security problems faced by developers face. Top of battery power is sealed in a narrow space limitations. And use a bit of a slow release of energy. Sometimes, however, for some reason, a sudden release of energy. Cause an accident.

Devoting more resources to the energy released could be higher, thus a higher risk. Therefore, the higher the energy density, safety measures, the most important.

Increasing the energy capacity, with the corresponding security VGP-BPS2B measures essential for development.

Q: What are the essential safety measures?

West: As already mentioned, due to higher energy density, the greater the risk, so that security issues more important.

No single cause of the accident. Need to understand the positive active material, negative active material, electrolyte, separator and a satchel and all others in the process of loading and unloading of the moving mechanism and its impact safety.

Recently, the cost of increased competition, the technical side and the seller proposed to reduce the cost of production sites have become more demanding. Although you may think replaced by cheaper materials and shorten the manufacturing cycle and other methods, but the technical aspects to take into account those pairs of Dell 6Y270 battery performance, particularly in security, the impact for the maintenance of a place can not make concessions attitude.

On the other hand, the concern is not without the aid of the party not in compliance with the design of the battery using the designated location request. I also heard that because of the construction machine side strongly demands for fast, its temptations, the charging voltage is designed to limit the phenomenon of over 4.2 V is also beginning to emerge.

In the lithium-ion rechargeable battery run time, the battery technicians and sales personnel to use the side with an introduction to the technical team, clearly tell everyone what to do and not do. Now, sales are run by companies, fewer and fewer such scenes.

Q: How to improve the resistance of young technical staff?

West: Lithium-ion rechargeable hp 367759-001 battery with the original battery is different from other chemicals, non-electric material elements of knowledge but also wide. These include organic chemistry (electrolyte, binder, diaphragm), polymer chemistry (divide, linking, gel electrolyte), metal (positive and negative collecting agency), ceramic (positive living material), the carbon materials (anode), etc..

In addition, lithium-ion rechargeable toshiba PA3534U-1BRS battery applications wide range of fields, use the method (charge and discharge conditions) are also diverse, so also need to understand the application of the machine a little. Therefore, can not lock us in “I’m positive expert, a narrow zone. In command of a wide range of knowledge (even if you can sit in the cars), then, should be established areas of expertise.

Q: Could you tell us about the problems of system management.

West: I hope that manufacturers of batteries, remember that more attention should be given regarding the cost principles of quality and safety. Otherwise, no matter how to improve the energy density and output characteristics, eventually becoming a mirage.

You want to use lithium-ion rechargeable batteries and battery production in the exchange of technical personnel to go to learn more about lithium-ion rechargeable apple PowerBook G4 15 inch battery is used. Of course, this issue is not only machine, hand building, the designer of the battery must also pay attention.

Pure electric vehicles and vehicle fuel Laptop battery in the car using the process to achieve zero emissions, and can completely get rid of dependence on oil resources, development of new energy vehicles will be the ultimate goal, and choice the route of transition, due to cars alternative energy and health energy vehicles more dependent on physical energy associated with the development of regional characteristics, it is difficult in the global promotion, hybrid vehicles because improvement of the current automotive technology is relatively small, in the period of high oil prices have a better fuel economy and meet the emission standards high, the transition is the best way.

Companies in the Japanese automotive industry to seize the lead

Hybrid cars work, you can use two types of mode of mechanical and electrical drive, for example, a plug-in hybrid technology makes the process more convenient pricing is the tendency of development of hybrid cars.

From the worldwide sales of hybrid electric vehicle distribution point of view, the United States is the largest sales of hybrid electric vehicle market in 2007, sales of 35 million units, representing 70% of sales Global, Japan, Britain and Canada, IBM ThinkPad R40 battery market shares, respectively 13.8%, 3.2% and 3%, while other countries, only 10% of the total share of the market to be developed more.

In the hybrid car in the United States, the largest consumer data, the Japanese auto companies, with its field of hybrid cars first advantage engine, has occupied the market. Market for hybrid cars from Toyota stood out, its 2007 revenues to U.S. $ 18 million, occupying 79% market share, Honda, Ford, GM and Nissan’s share of 10.2%, respectively, 7.1%, 1.5% and 2.4%.

Global sales reached one million of best-selling Toyota Prius in 2006, landing in China after the sale had been poor in sales volume in 2008 should remain Dell Inspiron 700m battery in the 1000 shows that the average current consumption of China Vehicle hybrid does not endorse the purchase of desire is low, the Chinese market will be developed.

Cost advantages of high-priced car

Compared with conventional cars, hybrid cars use the cost advantage is a prerequisite for development. Under current conditions, the use of hybrid cars benefit costs reflect the price of $ 20 or more cars, hybrid technology in the price of 5 million cars do not use cost advantages, even if we could reach 100% of the fuel economy effects, the use of cost – is still 22% higher than conventional vehicles, in the price of 100,000 yuan and 15 million motor vehicles, only 80% or more of the effect of fuel economy, only a small hp OmniBook XE3 battery cost advantage, in the price of 20 million yuan, 250,000 yuan and 30 million vehicles to achieve 40% -60% of fuel economy effects reflecting the use of certain cost advantages, indicating that hybrid technology has real value.

In essence, the cost advantages of hybrid vehicles is the cost of electricity compared to the cost of the benefit of oil. 93 # If the price of petrol has dropped 30 percent, or 4.46 yuan per liter, while the use of hybrid technology, cost advantage will be smaller, the sony VGP-BPS5 battery actual value, if 93 # Price Gasoline rose 30 percent, or 8.28 yuan per liter, then the mixture power technology will be most obvious practical value.

Technological progress is the development of hybrid cars, a powerful, if technological advances and determine the price of electricity decreased by 30%, its hybrid technology to enhance the role of cost-competitive with gasoline prices increasing 30 per cent have a significant impact.

Optimistic circumstances, the application of hybrid toshiba PA3399U-2BRS battery technology has broad prospects. 93 # If the price of gasoline rose 30% and 30% decrease electric drives simultaneously, then the application of the value of hybrid technology is very obvious price of 10 million yuan for the use of car have some cost advantages.

About the development of battery technology

The current hybrid cars use nickel-hydride technology battery metals major, but the nickel-metal hydride batteries have a number of technical performances, close to the theoretical limit, such as energy density, charge and the rate of firing. The lithium apple PowerBook G4 15 inch battery has an energy density, high capacity, no memory, etc., are car manufacturers and battery suppliers unanimous approval of the need to solve the problem today lies in its use of stability, security and cost of production.

Lithium iron phosphate is a lithium battery and high safety, high stability, high specific capacity, protection of the environment and the benefits of cheap, but its poor conductivity, is the need to address major problems. BYD Auto’s dual core technology of the vehicle mode is “AND-Power”, the use of technology in the lithium iron phosphate is, each battery voltage 3.3 V, 60 Ah, up to 2000 times the number of charge cycles and, especially, Zambia Di F6DM vehicle for living to 100 of the TravelMate 290 battery up to 430 km distance, 100 km in electric mode, the hybrid model of 330 kilometers, but actual production is still some time.

Compared was applied to the hybrid plug-in hybrid technology allows hybrid vehicles with better performance and ease of use. General Motors designed the Chevrolet Volt is to use technology lithium, PHEV, should be available in 2009, while the Toyota Prius is not due to technical problems the new technology of lithium used in cars. Volt lithium Dell HD438 battery on board is produced by the A123, the ability of 16kWh, the current Prius battery capacity 12 times, greatly improving the endurance capacity of hybrid vehicles, but “may be plug – in “design to allow for battery recharging more convenient, 110V under load of the interface can be filled with 6 hours.

In order to rapidly develop high performance, low power cost of the vehicle battery, the major automakers and battery manufacturers have adopted a cooperative approach to development, triggering a LCBTP03003 battery powering the vehicle for International Development in the world. General Motors moves in which the most active at the same time with the A123, Compact Power, Cobasys, and Saft four companies to cooperate, to seize the leading position in battery technology lithium, the intent is obvious.