digital batteries

Eighties from the twentieth century with the rapid development of electronic technologies, the pace of progress of human civilization in a variety of electronic devices rely on rapid growth, with the rapid development of the information age, this dependence is growing. The constraints of these new systems for high performance electronics is a major obstacle to the development of food. In particular civil portable electronic devices are in the direction smaller and lighter, which requires the provision of energy to the Laptop battery by looking at the advantages: small size, lightness, high specific energy, long life the maintenance, no pollution. Currently portable mobile communications systems for positioning, laptops for portable electronic applications on behalf of the equipment are all made on the battery from the increased demand. The evolving system requirements and electronic information of the time, the power must be adapted to the needs of scientific and technological development.

Lithium, atomic number 3, located on the first main group of the periodic table of the first, the lightest known metal atom (6.9 4), the electrode potential more negative (-3.045V), the element name derived from the Greek man was meant to “stone”. 1817 Swiss scientist Afu Cong Wei penetrating analysis revealed that lithium career-long. Because of its potential more negative, with the exact composition of material for battery cathodes coupled with superior electrical performance. This has led the world in a great attention of researchers, from the twentieth century, since the study of seventy, the battery – batteries of manganese dioxide, lithium – cells to sulfur dioxide, lithium — thionyl chloride lithium battery in the Dell XPS M140 battery to become the most widely used three types of system, the range of products, as well as dozens.

Lithium – Manganese Dioxide Battery features:

1, relatively inexpensive: the positive active material and using manganese dioxide electrolytic manganese dioxide, a cathode of lithium battery active material of a relatively inexpensive and can be widely promoted.

2, good battery performance: its energy is dry 5 ~ 10 times (approximately 230Wh/kg

Or 500Wh / L), the charging voltage of 2.8 V, the discharge voltage is relatively stable. -40 ~ 50 ℃ in the work environment;

3, long battery life: Store at room temperature and under the condition of the range of more than 10 years, the annual capacity of about 1% lower;

4, safety and reliability of the battery: The battery storage and offloading in the process of non-precipitation of gas, safety, good;

5 size, variety of battery: batteries, including button, column, rectangular three categories, each category there are different and the structure of the hp F4809A battery capacity of a few tens of milliamps to hundreds of security in range. Therefore, to meet a variety of applications.

Development of Lithium – Manganese Dioxide Battery importance of the study

Because – system of lithium-manganese dioxide, using non-aqueous organic electrolyte, the viscosity at low temperature, conductivity decreased sharply, Li-MN02 at low temperature can only be a small power output, even if the battery design Structural change, still unable to improve the battery system of the kind of performance at low temperature. This has seriously hampered the system in civilian areas. However, due to lithium – sulfur dioxide and lithium – thionyl batteries acyl, with the extension of storage time, increases in current production and use of environmental temperature decreased, the surface electrode to form a dense passive film at the battery when its use will be apparent voltage is lagging, according to the different latency can be as long as 10 minutes, plus two battery types are all security issues: lithium – thionyl chloride sony VGP-BPS2A battery system, caused by the misuse of the battery when the battery temperature, discharge cathode produces sulfur and lithium exothermic reaction occurs, or the lithium-carbon material in May be integrated with thionyl chloride or sulfur violent exothermic reaction occurred without battery makes the security system – system of lithium sulfur dioxide battery, the internal pressure inherent when using the battery would cause excessive explosion or leakage of sulfur dioxide gas, there is less security problems. The United States has been the use of lithium – The lithium-sulfur dioxide and – batteries thionyl chloride to threaten the safety of these incidents appear to reports, the twenty-century, first to the growing importance on the environmental protection and system reliability, security and good Lithium – 2 oxidation of the battery system, further study will be the priorities for research on lithium batteries.

Research and development trend of domestic and foreign

Europe and the United States in the mid-nineties the transfer of research center on the energy of gravity when Lithium – Manganese Dioxide Battery began to be taken seriously. Column was originally a series of small models of batteries, then the market interested in high technology apple A1078 battery capacity has made remarkable progress. Before the widespread use of the United States in the evolution of Canadian society Technology Blue Star, Ultralife Battery Co., Ltd., New York

Hternacell produced and lithium – battery manganese dioxide, and the study could provide greater capacity and power than the specific batteries. United States of America

Uitralife Lithium Battery Co., Ltd. – battery manganese dioxide in the comprehensive study, now in the same volume conditions, lithium – lithium manganese dioxide battery that – more than 50% cells of sulfur dioxide to provide energy to break the researchers over the years that lithium – not as good as the lithium-manganese dioxide – batteries sulfur dioxide greater than the energy perspective.

China momentum created by the late Ah Lithium – Manganese Dioxide Battery self-work development research to develop a series of cylindrical lithium – manganese dioxide lithium batteries and a range of Button – batteries of manganese dioxide, in a number of major research institutes generally focus on high specific lithium – manganese dioxide cell research, book-lithium type – batteries of manganese dioxide in subsea applications, special areas of application of advanced exploration technology base. A typical technical success are: lithium-Type Book – The batteries of manganese dioxide can be 1mm below – Lithium Manganese Dioxide specific power to achieve and exceed 580W/kg; Lithium – Manganese Dioxide battery weight of ‘energy to achieve and exceed 300Wh / kg.

Lithium – manganese dioxide battery is a lithium battery in the century 21st, the high reliability of the most promising, and pollution from chemical energy, with the development of nano-materials, manufacturing technology, and low viscosity, security, several good organic electrolyte systems further study, lithium – chemical properties of manganese dioxide battery, there will be a greater degree of improvement in the establishment of an energy, power high light-based, features a new micro-electro-chemical, and improve our high-tech electronic products under the VGP-BPS10  condition of market competitiveness.

Li Sheng-mao said the investment adviser, the car industry lithium batteries contain very high value materials electrical potential car battery suppliers upstream and downstream manufacturers of lithium batteries for automotive operations automobile were tiptoe around a long time. Li-ion Laptop battery is behind the price of hot cars on the plug-in hybrids (also known as plug-in hybrid electric vehicles) and pure electric vehicles, the market prospects of recognition and R & D capabilities of their current concerns. While Bosch stand by the end of 2008, said to be electric cars on fire to keep sober, but still fresh, as Bosch has also established a joint venture with Samsung expects to achieve volume production and sales in 2011.

1, the Sino-Japanese and American auto battery lithium situation for Development Analysis

According to Deutsche Bank research shows that vehicles the 10 companies most willing to work with companies to develop lithium-auto: 1) Johnson Controls-Saft (United States and France, Johnson Controls and Saft joint venture) 2) of A123 Systems, Inc. (Institute of Technology Massachusetts College, General Electric and other investors to establish the group in society cooperation with the mainland), 3) LG Chemical (Company the U.S. subsidiary Compact Power), 4) EnerDel (Ener1 and Delphi joint venture), 5) AESC (Nissan and NEC joint venture), 6) PEVE (a joint venture between Toyota and Matsushita), 7) GS Yuasa, Hitachi 9) Sanyo Electric; 10) Samsung.

Investment Advisor in the new energy industry researcher Sheng automotive Li-mao said that research can be found at the above, at present, the Japanese suppliers of the lithium Dell XPS M140 battery market world are indeed a great advantage. According to the Japanese after the disclosure of the Bureau of Industrial Policy, Japan in 2010 to try lithium batteries for next-generation vehicles electric. Toyota, Nissan and Matsushita Electric Industrial and other related companies have signed an agreement to jointly develop a new generation of lithium batteries unified specification cars, and plans for mass production within 2 years. Toshiba decided to spend ¥ 50000000000 development of electric vehicles using lithium-ion batteries, which will be held within two years of power high performance semi-commercial production.

In recent years, China Automotive Lithium industry from scratch, from small to large, rapid development, production capacity after Japan. China Lithium-ion battery industry started late in Japan, but developing very rapidly, power lithium-cell research and development ion has also invested considerable financial and material resources. Lithium Chinese automotive-ion hp F4809A battery R & D project was the 863 “national” key project, much of the equipment to perform the localization and the introduction of multi-national materials has been self-built production lines and support, the plants have more than one, were the formation of large-scale production, highly competitive market, primarily investment-oriented industries.

China BYD, Wanxiang Group, Shenzhen BAK Battery, Tianjin Lishen Battery Myers, a joint venture with the United States and therefore exposure to research on lithium batteries. However, currently the only master of the lithium iron phosphate technology vehicles, large production scale BYD, leading position in the world, BYD E6 pure electric vehicles and hybrid F3DM officially launched achieving developed itself lithium-ion sony VGP-BPS2 battery.

Recently, the U.S. battery manufacturers are increasing their investments in lithium batteries for cars, as the company power solutions, Johnson Controls (Johnson Controls Power Solutions) recently said the company plans to invest 100 million U.S. dollars in the Florence of Southern California, the construction of recycling car batteries factory. Boston the U.S. government also heavily subsidized investment in power plant electric car battery will be in Auburn, Massachusetts, United States to create the company’s first factory car electric battery.

2, feeding problems encountered in the development of lithium batteries

Which currently prevent the development of lithium-bottlenecks are ion battery: safety performance and vehicle power management system battery.

Safety performance, because the lithium-ion battery with an energy density and working temperature is high, poor working conditions and other reasons, coupled with the safety of people-oriented concept, so safety Battery users have a very high demand. Auto battery management system of energy, since the supply voltage of 12V vehicle battery or 24V, but a single power lithium-voltage ion battery is 3.7 V, the battery must be a number of series and increase tension, but because the battery is difficult to achieve completely homogeneous charge and discharge, leading to a number of battery packs in series within a single battery charge and discharge occurs imbalance, the battery is under and over-rejection phenomenon, and this situation will lead to a sharp deterioration in toshiba PA3191U-1BRS battery performance and ultimately led to the entire group of cells does not work, or even discarded, thus significantly affect battery life and reliability.

China analyst with the automotive industry with investment advisors who Sheng-mao, power lithium-ion battery for proper application, which is technically necessary starting materials, batteries, systems management, taking into account the processing mechanical and other aspects. Therefore, the need for firms in upstream and downstream to work together with the battery as a core material, the management system requests formation of an industry group, more conducive to technological and system costs.

3, the outlook for lithium batteries for automotive

The future of new energy vehicles, instead of the traditional tendency of the automobile will become a necessity, lithium car batteries as new energy vehicles in the “heart” will be spawned a huge industry, of economic effects. It is understood that the joint Ministry of Science and the state ministries and commissions will be for 3 consecutive years in each of 10 different cities were in 1000 as a demonstration of applications of hybrid electric vehicles. Support services for the State concerned, to further enhance the demonstration and application of hybrid vehicles as a means to stimulate the development of technology of lithium batteries, and parts and key improvements in vehicle technology, new energy for after 2010, laid the foundation for the automotive industry.

According to the Investment Advisor “issued by the new energy vehicles in China during the 2008-2010 Industry Analysis and Investment Consulting report” shows that the situation of energy resources of China and the development trend of international automotive technology is expected by 2012, annual production will reach a new energy vehicles to 1 million, while the projections, by 2025, China accounted for holdings regular gasoline vehicles and cars will be only d ‘about 50%, and advanced diesel and gas vehicles, bio-fuel vehicles such as the rapid development of new energy vehicles will be.