2009年5月26日 星期二

"Honeycomb" Crystal available

"Honeycomb" Crystal available

Super "Honeycomb" Crystal debut is expected for the hydrogen fuel cell vehicles in the storage dell inspiron 510m battery , dell inspiron 600m battery

U.S. scientists have invented a super "honeycomb" crystal, filled with numerous internal microporous If all can extend to a total area of "staggering." This new invention is expected for fuel cell vehicles in the storage of hydrogen.

According to the latest issue of "Nature" magazine, only 1 gram of such a crystal, its internal pore surface area and the equivalent of 17 tennis courts on such a big area microporous crystal set a new record. The previous record is that 1 gram of crystal and the pore size is equivalent to the size of 12 tennis courts.

Arbor University of Michigan by the United States, who invented this new type of molecular crystals from zinc oxide and a carbon compounds constitutes the molecular interaction, the formation of a strong lattice structure, with the tremendous internal surface area.

Although this called "MOF-177" new type of crystal is still at an experimental stage, but the invention of hope, it may in future be used for fuel cell vehicle hydrogen storage. Porous crystal chemical industry is an important area of research.

Advent of a new type of lithium battery car

February 8, Kuroiso city in Japan, engineers in the pre-test a new type of electric vehicles "Eliica". Keio University in Japan invented such a lithium dell latitude d500 battery-powered cars by the eight wheels, more than 315 km per hour, will be in Italy next month to test its maximum speed of 400 kilometers.

Six months to complete the triple jump

Six months to complete the triple jump



In less than six months time, Veken Group has acquired the domestic first third of Ningbo Baowang Battery Co., Ltd., the world's third after the U.S. giant battery RENOV Capital companies. Yesterday, it joined hands the world's top 500 companies ranked No. 16 and Itochu of Japan, the world's leading enterprises in polymer lithium 6y270, c1295,dell inspiron 500m battery company in Denmark Danionics. The frequency of "triple jump", showing the Veken domestic battery energy industry, "the new hegemony" ambition.



Veken Group aimed at the battery of the development prospects of the energy industry to holding Baowang as the breakthrough point, determined in July last year to enter the battery energy industry. Following the successful implementation of the capital and RENOV cooperation, Veken will reach out into the prospect of a more representative of the polymer lithium battery cell production. Yesterday, with Japan's Itochu, Denmark Danionics company reached an agreement to set up joint venture in Ningbo, the production of notebook batteries, cell phone batteries, PDA batteries and battery-power batteries, such as high-grade. A company, the second phase investment of 100 million U.S. dollars, respectively, completed the second phase is expected to achieve sales of 400 million U.S. dollars. Veken Energy Technology Investment Co., Ltd. Zhu Guangyao Chairman said that this new Baowang will bring a qualitative leap in the energy sector to achieve Veken product mix, at the same time, it will further optimize the industrial structure Ningbo battery.

2009年3月18日 星期三

Mercury-free alkaline manganese battery of technical issues that need to be resolved(c)

Mercury-free Process and Control


(1) to improve the electrical conductivity properties of zinc ointment

Mercury’s “wet” between zinc and zinc help with the collection of fluid connection between the (sticky) Then, to improve the conductivity of zinc ointment, so that the battery has a good anti-vibration performance. Go mercury dell laptop battery, dell g5260 battery, dell g5266 battery, dell latitude cpi battery, the conductivity decreased significantly. Conductive paste to improve the performance of zinc from the use of high viscosity stability Thickening good zinc cream, zinc cream in an appropriate increase in the proportion of zinc in zinc paste and add a few other conductive material aspects.


(2) to control pollution in the production process

Mercury-free alkaline manganese battery production must be kept clean and pollution-free production environment of the production process. According to the battery industry experience, the general requirements for the production of wet conditions at constant temperature, the appropriate temperature of 20 ℃ ~ 28 ℃, humidity 30% ~ 60% (RH). Not suitable for negative electrode assembly assembly at low temperatures, the steel should not be coated graphite conductive at high humidity conditions. Entire production process to be clean, to prevent hydrogen evolution into making zinc impurities increase. Intermittent parts processing, many manual, fittings beyond the control of pollution, the quality can not be assured.


(3) control of carbonated

Effective control of the production process is the carbonation anode are mercury-free alkaline manganese batteries, one of important process measures. First of all, to control the concentration of CO2 in air, zinc ointment preparation conditions in a vacuum, the electrolyte, zinc paste, cathode powder must be sealed packaging, KOH, such as mercury-free zinc powder should minimize exposure to air time, packing damaged should put an end to the use and so on. Sealing process equipment and transfer the former track security guard shall add, to reduce air exchange to prevent the battery carbonated products. Batteries should also be noted that control online time, mercury-free battery production in exceptional circumstances the longest downtime in general may not be more than two hours. The reliability of domestic equipment relatively poor, prone to failure, equipment failure should be to prevent the contingency measures.


(4) the attention of Cu and ultra-fine zinc powder on the impact of mercury-free dell inspiron 8200 battery, dell inspiron 8000 battery , dell inspiron 8100 battery, dell inspiron 4000 battery

At alkaline manganese battery copper cathode in the basic state to compound exist in the role of electric potential, the easy migration to the anode, the zinc anode batteries go because of mercury, has accelerated the relocation of ultrafine particles to the cathode, when the diaphragm tube defects have points when, Cu2 + and Zn deficiencies in point happened in the redox reaction, the formation of copper hydroxide crystal sticks gradually penetrate the membrane, forming a short circuit. The production process must be strictly controlled Cu pollution, mercury-free zinc powder in the ultrafine particles there should be restrictions to prevent the migration of zinc powder to form short-circuit the battery.


(5) is more suitable for studies of mercury-free battery capacity requirements and improve the new structure

Made alkaline manganese battery is still the current structure of Japan’s Fuji prevailing on the sealed form, because of mercury-free alkaline manganese batteries Analysis of gas increases, the reliability of such a structure is open to question. Des films with cathode assembly more conducive sealed nylon because of the consistency is better, mercury-free alkaline manganese batteries to consider the reliability of seals from polypropylene nylon than good, unfortunately the high cost of nylon ring. Europe and the United States structure of alkaline-manganese battery is worth drawing on our country, besides a reliable seal, the cell can make use of space has become larger and more conducive to the improvement of dell inspiron 4100 battery, dell inspiron 2500 battery, dell latitude cpx battery, dell latitude c600 battery capacity.

Mercury-free alkaline manganese battery of technical issues that need to be resolved(b)

Equipment for the assembly of the main mold material there is bad, do not wear-resistant, dust pollution is serious and so on. Mechanical plant should be strengthened with metal materials research department collaboration, select the applicable cathode ring mold materials and heat treatment method.


Raw materials and spare parts


To promote mercury-free alkaline manganese dell laptop battery, dell inspiron 6000 battery, dell gd761 battery, dell c1295 battery, the process, it is necessary to down-to-earth manner, some base building. Mercury-free alkaline manganese batteries need to be dedicated to further improve the quality of EMD, in particular heavy metal impurities are no longer content to be reduced, but also improve the battery at high voltage potential and discharge capacity of the whole point of martial arts.


For alkaline manganese batteries graphite powder, a lot are processed by the squamous form of graphite, and graphite in squamous Fe, Cu and other elements with a high level. Without effective control measures and testing means, such graphite production of mercury-free batteries, can lead to major quality accidents.


China has not completely mercury-free zinc clearance from the selection of high-quality zinc starting material, but also must look at appropriate processing methods. Al with Ca in place of the In-Bi 1 Ca zinc alloy is more conducive to reduce the mercury-free alkaline manganese battery storage period of chronic short-circuit. Analysis selection depth of discharge gas on the low zinc dependent solution are mercury-free dell d5318 battery, dell 75uyf battery, dell inspiron 6400 battery, dell 6y270 battery storage and resistance to leakage of important performance measures.


Alkaline manganese batteries divide need to further improve performance, improve density and uniformity, increase block. Korea provided technology divide winding spiral winding method, to meet the requirements for mercury-free, to recommend appropriate winding adjust the angle so that the effective increase in low-rise. Reduce the membrane thickness of paper to increase the winding layers, which is the international alkaline manganese battery industry is a tendency.


CMC, such as traditional zinc ointment Thickening the use of mercury-free zinc powder stability variation, can not meet the requirements of mercury-free battery. To enhance the mercury-free alkaline manganese batteries of anti-vibration performance and storage performance, the proposed selection of PA and PA 1 Na high viscosity, good stability of zinc paste thickener, and select the appropriate ratio, the performance of battery will be more the desired results. Alkaline manganese battery of standardized parts alkaline manganese batteries are mercury-free implementation of the basic conditions. Alkaline manganese battery set up some spare parts base, strengthen the quality control of parts of the alkaline manganese battery improve the quality of implementation of mercury-free alkaline manganese dell inspiron 9300 battery, dell inspiron 9400 battery, 310-6321 battery, 310-6322 battery is very important.

Mercury-free alkaline manganese battery of technical issues that need to be resolved(a)

According to nine ministries and commissions such as the State Economic and Trade “about restrictions on mercury content in batteries provides that” the notification requirement, implementation of low alkaline manganese aspire 1680 battery, lcbtp03003 battery, mercury-free period has been entered of, therefore, to solve related technical problems, rule out the possibility of mercury-free process obstacles to become a top priority.
Mercury-free alkaline manganese battery of technical issues involved in the following areas:
Mechanical equipment and tooling moldChina’s industrialization late alkaline manganese batteries, mercury-free technology by the study because of equipment, spare parts and materials to such constraints is still in its infancy, especially for low, mercury-free alkaline manganese aspire 1300 battery, compaq presario x6000 battery production of domestic machinery and equipment not yet sophisticated, the vast majority of plant is still used for intermittent production of equipment, spare parts processing, tooling mold has not yet considered mercury-free requirements.Anode preparation equipment is currently in use is still the largest pharmaceutical machinery, including the mixed powder, tablet or relief rolled article, into tablets, screening and preparation, such as zinc cream. Equipment exist the following main aspects:
(1) mold tooling, machinery and equipment did not attach importance to material corrosion resistance, stability and wear resistance, particularly in domestic equipment. Mixing barrels, roll, zinc cream containers, etc., etc. Although the use of high-grade stainless steel materials, it has still not reached the requirements for mercury-free, ordinary stainless steel corrosion, oxidation and wear resistance are inferior. Mercury-free alkaline manganese battery anode of Fe, Mo and other elements is 7 ~ 10 1 10 1 6 control, materials corrosion, electrochemical reaction and mechanical factors such as the anode is likely to result in more than the allowable values of impurity elements. Korea’s Rocket anode preparation equipment required to adapt to mercury-free and consider a more comprehensive, it is worth drawing on its inner wall mixing machine the wear-resistant non-metallic coating material, contact zinc cream containers full of machinery and the use of engineering plastics, completely avoid metal impurities mixed people.Acer battery, Apple battery, Asus battery
(2) genuine low rate of serious cross-contamination. By the mixed powder to screen out qualified silt, general equipment into tablets in a 65% rate is only about 2 / 3 for the unqualified goods, required repeated at several machine cycle, this increase in cross-cathode powder pollution. While Europe and the United States of powder processing systems, its first rate into tablets of 65% ~ 80%, greatly reduces equipment wear and particles of cross-contamination.
(3) of the equipment Chuan (to) the use of moving parts of copper and other harmful metals. Mercury-free alkaline manganese batteries are particularly sensitive to copper cathode, copper cathode and other impurities mixed powder people are caused by chronic mercury-free Compaq battery, Dell battery short circuit potential.
(4) alkaline medium conditions, drying process easily lead carbonate powder cathode, and also prone to cross-contamination. High concentrations of lead carbonate are alkaline batteries climb one of the factors for mercury-free alkaline manganese batteries require higher concentrations of carbonate.
(5) anode current collector assembly also mainly depend on domestic add mechanical intermittent manual processing. On aspects of product quality by man-made factors, on the other hand, such processing can not meet the requirements for mercury-free. This is also the necessary machinery and equipment, one of the problems as soon as possible. Set nail and negative flow at the end of the welding method is also worthy of study, are currently widely used by DC energy storage explosion welding, this welding of copper is not easily lead to contamination collector assembly, are caused by mercury-free alkaline manganese batteries short-circuit an important risk of chronic . Import anode current collector assembly equipment required hundreds of thousands or even hundreds of million yuan, the battery should be attached great importance to the mechanical plant equipment, research and development, improve labor productivity is also an important aspect. Fujitsu battery, HP battery, IBM battery, Sony battery, Toshiba battery

2009年3月13日 星期五

Dynamic safety of lithium-ion battery cathode materials and design influence(d)

Only manufacturers are in the negative ratio, bonding agent types, divide the assembly, welding and a type of ear, package, through careful calculation and control, to make a film within a reasonable current distribution, polarization small battery, cooling Good and efficient security. For safety considerations, the driving force in the design of the acer laptop battery would normally be taken into account when the abnormal situation occurs when the battery system to environmental heat transfer rate system can produce heat than the speed, because it determines the heat out of control in response to the probability . To further enhance the safety of battery power, many manufacturers will normally be the electrolyte in the battery to join the functional additives. These additives have been sufficient defense, anti-Expansion to improve the low temperature and the role of fire-retardant. It is worth mentioning that the flame retardant electrolyte add impetus to enhance the safety of the travelmate 240 battery, btp-52ew, btp-63d1, btp-42c1, a42-a3 battery an important direction. Join the flame retardant is designed to increase the oxygen for combustion electrolyte. As we all know, when the oxygen index of more than 27 when a flame retardant material, the development of the flame retardants are close to or reach this target. The power battery electrolyte, the individual indexes for the development of the additive is not difficult, the difficulty of the electrolyte is to ensure that security at the same time we must take into account other conventional performance. Electrolyte balance for the function, multi-functional compound additives on the direction of R & D is. Essential to the protection board In order to strengthen the driving force for the safety of lithium-ion battery, battery protection board is bound with the equipment. In most cases, lithium protection board should have control of the use of lithium-ion battery conditions of work functions, these conditions include voltage, current and temperature. As the use of lithium-ion btp-73e1, batcl50l, travelmate 290 battery, travelmate 4000 battery are unique, making lithium-ion battery power to protect and support the use of panels together to ensure the safety and reliability of the system as a whole. More and more strings of batteries in matching assembly, in the process of long-term use is inevitable that there are individual differences, the protection board (or battery management system) to be responsible for the entire group of battery voltage, current and temperature, and even the capacity to monitor, we must Achieve the accuracy and prompt action can play a due role. At the same time, battery performance of individual differences in the same charge and discharge current, sections of the battery voltage and available capacity will be different, with the increase in the number of cycle, the battery performance differences will become increasingly significant, which will Greatly reduced performance of the entire battery life significantly shortened. For battery performance to reach or approach the level of single cells, each cell must be balanced so that the batteries within the single travelmate 2300 battery, aspire 1680 battery, aspire 1410 battery, travelmate 4500 battery charge and discharge performance deteriorated due to reduce to the minimum extent. Most manufacturers have adopted a balanced protection of rechargeable lithium-ion batteries for maintenance. Therefore, the driving force for the safety of lithium-ion battery of factors, the electrode material is essential, to ensure that meet the current industry standard materials testing system only LiMn2O4 and lithium iron phosphate. Manufacturers generally use the safety and compatibility of good performance additives protect the electrolyte lithium-ion battery power to better use. In addition, lithium-ion protection board provides for the protection of the functions of lithium batteries, can maximize the protection of safe and reliable power battery use. Charge balance function of practical guarantee for the lithium-ion battery to power high-security long-life work. From the future trend, power lithium-ion lcbtp03003, aspire 1300 battery, btp-aQj1, btp-arj1 batteries, boards and equipment for the protection of the three joint development is a scientific development.

2009年3月12日 星期四

Dynamic safety of lithium-ion battery cathode materials and design influence(b)

On the data obtained at home and abroad, LiCoO2 used to power batteries of greater security risks, not generally as the motive power apple laptop battery cathode materials; LiMn2O4 the use of more common; nickel and cobalt LiMn2O4 domestic use less, China Taiwan and Japan that some manufacturers use. Because manganese is rich in resources (in particular China, the world’s reserves of the third), low-cost, environmentally friendly, and LiMn2O4 a high-voltage discharge, the technology is mature, security, and other layered structure of the cathode material can not be compared High-rate charge and discharge capacity of the advantages and thus present in the promotion of lithium-powered batteries, LiMn2O4 has great advantages. Although relatively lower than capacity, but the larger battery is not in itself constitute a significant weakness. LiMn2O4 cathode materials for the lithium-ion powerbook g4 battery, powerbook g4 15inch, a1012, a1148 batteries assembly has a good safety and thermal stability. However, there are also LiMn2O4 capacity fading fast (especially in high-temperature conditions), the short life cycle of the shortcomings that impedes the process of actually used. Nickel and cobalt LiMn2O4 material than are the advantages of high capacity, superior performance cycle. Made of lithium-ion battery has a very high energy density, suitable for severe restrictions on weight and volume but high-energy requirements of the field. As the use of the cobalt, nickel and other metals, nickel and cobalt prices LiMn2O4 after LiCoO2. However, nickel and cobalt manganese lithium-acid battery applications in force yet to be assessed on the domestic application of the material is usually the way through doping modified to improve its safety performance, but did not see the size of the application. Lithium iron acer laptop battery phosphate rich source of raw materials, low prices, higher than the capacity and excellent high-temperature cycle performance and high safety performance advantages, is very dynamic development prospects of battery cathode materials. Lithium iron phosphate as a new type of battery cathode materials for use in recent years have warming trend. Since the patent restrictions, Europe and North America to mass production of lithium iron phosphate battery of small manufacturers, ibm ThinkPad X60 battery basically been monopolized by a few manufacturers. Although many domestic manufacturers of lithium-ion iron phosphate lithium battery research and development into production, but due to technical and system-level differences in product quality varied. Additives, electrolyte safety Lithium-ion battery power also affected the design of the btp-43d1, travelmate 220 battery, btp-58a1, btp-60a1 of security.