Archive for the ‘Latitude D520’ tag
Gel battery and key produce technologies
Battery frost and key technologies:
1. The main raw materials of design calculations, selection and matching
2. Gel batteries special plate design, formulation and manufacturing process
3. Colloidal formulation and preparation, the dispersion SiO2
4. Early loading or filling operation
5. New gel batteries for added power technology
1. The main raw materials, design calculations, selection and matching
Gel batteries, the need to report the positive and negative electrode capacity, the thickness of the partition size, plastic shell the size of support, including IBM ThinkPad T60 battery capacity and the plastic shell size of single cell the relationship between the parameters corresponding to a series of reasonable arrangement. In general, single-cell battery should be able to guarantee an effective space filling of acid amounted to 12-15 ml / AH to protect the battery in the amount of the effect of the adjustment of acid-containing gel.
A common problem is the use of sealed AGM batteries the standard plastic shell to act as a shell plastic gel battery, which is often caused by insufficient capacity or the battery open circuit faults in voltage and other issues. Another problem more common in domestic PE separators such as the use of private partitions instead of gel batteries, or use a sleeve of fiberglass, silk short sleeves instead of polyester gel battery box Dedicated partitions, which are most seriously affected product, life makes life / cost, but not worth the candle.
Users demands long battery life expectancy colloid required in the design and equipment selection, when it should be more stringent than the conventional design sealed Dell Latitude D520 battery, seal the pole to the growth and expansion of plate boundaries, etc., required in the structure must be considered and there should be corresponding measures, such as strength and size of pads and linings using a special pole structure, and enough interior space.
It is worth noting is how to prevent the assembly process in the break and short circuit group to protect the qualification rate of finished product.
2. Colloid plate special battery design, formulation and manufacturing process
Private plate gel batteries in particular, positive plate, and plate sealed classic comparison of the battery must be adapted to gel batteries (electrolyte) Special Requirements:
A, the requirements of colloid infusion: making the electrolyte in the hp F2024B battery is full all the corners;
B, to eliminate the polarization resistance increases due to the uneven increase in effect, require grid support structure design reasonable, hob, drying process reasonable and practicable;
C, regardless of recycling or floating charge to use, require long life, there is no thermal runaway phenomenon;
D colloidal form a network structure on the plates and separators and opening requirements of the porosity;
E, moreover, the actual conversion time of the battery in question.
3. Formulation of colloids and preparation process, SiO2 dispersion
A, first of all, is a gel battery needs to know the problems that the sony VGP-BPS2A battery needs to determine colloidal properties.
Council of the battery positive and negative active material in the electrolyte, after infiltrating the structure, you can get some inspiration.
Contrary to watch active substances of the structure and composition changes in the electrolyte after injection, the active material and electrolyte combination of regional, living matter was crystal - colloids (crystal structure of the glue) , sulfuric acid and water can freely enter the active substance through the diffusion of network structure of the territory, but the plastic changes of crystal structure depends largely on living material (lead dioxide or metal ) and lead sulfate (sulphate) conversion, while the sulfuric acid and water, and generate little to do with the reduction or can not be because the sulfuric acid or water to increase and decrease in moisture or frost. Therefore, life can always keep the stability of the structure. Thus, it can analogy to say that the sulfuric acid and water in the role of colloids: In the additive in the plastic front, followed by injection in the plastic, but should not be the structure of colloidal constructions.
Previous studies, often the chemical transformation of silica hydration —- begin to draw on the reversible reaction of water glass to understand the mechanism of the colloidal structure, and it is very easy to stick on the glass water and other resources, and even the two Silica gel hydration is a key step.
In fact, if the set colloidal structure of sulfuric acid and water are the structural components, toshiba PA3285U-2BRS battery charge-discharge process in the corresponding chemical reaction caused by sulfuric acid and changes in the composition of water in the original colloidal structure will inevitably lead to fragmentation, collapse and reorganization, the correspondent must gel hydration and shrinkage. It is difficult to say that the battery life to meet the needs of a stable structure. Therefore, this myth should not be allowed to continue.
After that, we had an aging test (after festivals worldwide after the battery charge-discharge cycles, the crack formation) and gel batteries to overcharge and over discharge to verify this conclusion, a mainstream (0.2C to 0.3c) conducted on a full charge of battery power (1.5C to 3.0C), or excessive discharge and closing terminal battery voltage to 0V (discharge volume reached 1.2C to 1.5C, and even more). These experiences, we can see (police) for gel batteries warm, but we see no moisture to freeze.
B, the gel formulation and preparation, the more critical is the dispersion of silica. Not studied ultra-fine powder or knowledge, it is difficult to understand the dispersion of the dispersion of silica rigorous requirements. The ultra-fine powder technology in the industry of household batteries are not very partial knowledge of point to study the dispersion of silica dispersed in water is almost pitiful papers, research focussed mainly in paints, etc. Hang Dang.
C on silica thickening and thixotropy awareness, in particular, recognize that the thickening of the silica and thixotropy are not inalienable, a process of inappropriate preparation could affect the silica thickening and thixotropy. Right filling process of plastic production, the thixotropic gel is very important, but the life of the apple iBook G4 14 inch battery in the finished product, the colloidal thixotropic Zexu eradicated.
D, training battery, and the plate pairs of colloidal have different needs, a corresponding change in the colloidal components.
4. To start charging or filling operation
Many people are beginning to charge or recharge the battery capacity as a simple process to adjust and active substances in the process, prefer to be adjusted according to their understanding of recharge processes. In fact, the process of loading the gel battery is just a hammer 100 to 1000 the training process, each side in the process of loading and unloading steps is mutually reinforcing.
Enjoy the cooking equipment plate, the initial charge of battery for a complete charging process must address the following questions:
A plate active material fully translated to protect the battery capacity;
B, plate active material of structural adjustment in order to form a relatively homogeneous and colloidal;
C, reaching the original glue and sulfuric acid, water exchange, the formation of uniform colloidal structure, fully utilize and improve colloidal thickening, reduce the thixotropic gel to form a stable colloidal structure;
D set the Dell GD761 battery voltage and capacity, to adjust the consistency of the battery (capacity, resistance, voltage, etc. coherence).
E, charging additional water loss and water temperature control, and so on.
5. The new gel batteries add power technology
The new gel batteries, the aging treatment are not a new battery, because not yet formed cracks. Therefore, in the charging of fees to certain requirements.
Unreasonable electrical process may be more intense mixing effect, undermine the stability of the colloidal structure, hydration, once produced, it undermines the performance of colloidal thickening. After charging, it is easy to create a localized or overall hydration, this is a very serious damage to the gel, and it will significantly reduce the lifespan of the battery.
Stockpiles new gel properly shelved is also aging, can form cracks.
How the new batteries with gel methods are most rapid economic and environmentally sound treatment in the aging of the battery that is worth seeing.
Development of the world’s power batteries
The battery is currently no applications to large scale and the automotive industry, and as the era of fair trade in dual DM2007 BYD’s-vehicle systems in electric mode apparently cell technology to power began to penetrate the attention people. Battery Categories
So what exactly is the driving force for the development of what has happened, we must first look at the common category of existing Dell Latitude D520 battery.
Lithium-iron battery
Lithium-iron battery full name is lithium iron phosphate, lithium batteries and lithium-ion batteries in the 20th century developed a new battery of high energy. This battery is a lithium metal anode, the cathode with MnO2, SOCl2 (CFX) n and so on. 70 years in practical use. Because of its high energy, battery voltage high operating temperature, long shelf life, etc., has been widely used in military aircraft and civilian small, such as mobile phones, laptops, camcorders, cameras and so on, partly to replace the traditional batteries.
Lithium-ion batteries for its unique advantages in performance portable devices such as laptops, cameras, mobile communications are universally applied. At present the development of high capacity lithium-ion VGP-BPS9 batteries in electric vehicle to begin a trial, which should become the 21st century, the power of electric vehicles, one of the engines of change, and a satellite, Aerospace and storage aspects of the energy applied.
High-iron battery
High-iron battery is a synthesis of a stable ferrate (K2FeO4, BaFeO4, etc.) may be used as cathode materials for battery rail at high speed to produce the energy density, small size, weight Lightweight, long life, clean new chemical batteries.
High-benefit of iron battery:
High energy capacity. Currently on the market that the battery power only 60 civil - 135w/kg and the battery can achieve high iron 1000w/kg above battery discharge current average is 3-10 times more. Particularly good choice for high power and at high current. High-cost battery iron efficiently. Alkaline manganese batteries can not meet the current need for high power capacity, high current digital cameras, video cameras and other electronic products, the needs of lithium-ion batteries because of the costs in this area do not have d a strong competitive advantage.
Flat-curve of the iron hp Pavilion dv4000 battery discharge. Such as Zn-K2FeO4 Plastics Industry Network All rights reserved more than 70% of the time of discharge in the 1.2-1.5V.
Rich in raw materials. The most abundant element in the crust for aluminum and iron content of iron in the crust to 4.75%, manganese content of 0.088%. In addition, each 6 mol Valent Iron can produce 3mol electronics, while the price of manganese per mol + 4 can only produce 1mol electronics, the dosage of iron is very rich in its own situation, only 1 Mn / 3 of a ghost know that significant savings in social resources and lower raw material costs. MnO2 on the market about 9,000 yuan per tonne, Fe (NO3) 3 about 7,500 yuan / ton. Non-polluting green. After unloading of product for ferrate FeOOH or Fe2O3-H2O, non-toxic pollution, ecological, does not require recycling.
Power battery status
The base power Electric Vehicle - Battery has been a shift binding manufacturers of electric cars in bottlenecks on the world automotive industry. Is the current internationally recognized high iron and lithium iron phosphate. High-iron toshiba PA3465U-1BRS battery has been considered as restricted area of industrial automation networks, lithium iron phosphate is the subject of research and development of domestic and foreign firms. Ferrate as battery materials developed by Israeli researchers published in the journal Science. However, the aqueous solution with the performance of the storage battery that bad, there are many national universities in the study.
In 1997, material lithium iron phosphate has begun to attract national attention. In 1998, the state 863 plans to invest 2 billion lithium iron phosphate in the study of Shantou. Chinese companies have been launched since 2001, lithium iron phosphate development, after six years, the first university finals in 2007, the lithium iron phosphate breakthrough technology from the laboratory to pilot the technology for producing a series of technical and engineering ZAOCHE168.com Copyright all, and to improve related processes, which makes the lithium iron phosphate security has been a greater degree of improvement and to ensure that iron provided lithium serialization products phosphate and wide industrial base.
In a few years ago, BYD 500 R & D team, the organization has begun the search for iron battery research and development. After tens of thousands of trials and tests, BYD has successfully developed a dedicated iron battery electric vehicles, the network processing metals All Rights Reserved called “AND-POWER”. BYD person in charge that represents BYD VGP-BPS10A battery on the latest scientific research, in which I said that protecting the environment and energy (electricity and environment), T indicates the technology (technology), power said power and average energy, in BYD “ET-Power” to name the new vehicle www.GUIZHIDAO.com Power Technology, intended to take the future of science and technology, the future of automotive resources. In fact, the main component of this battery is lithium iron phosphate, which is safe, stable, the high capacity, environmentally friendly, cheap, etc., but there are also low electrical conductivity, density, gaps low vibration. Lithium iron phosphate is so late, there is no reason for a wide range of applications, the electrical conductivity of poor quality is a major problem. This problem can be solved now is to add C or other conductive agent. This industry is regarded as a limited part of the high-iron battery.
Battery for future development
As energy shortages in the world and increased regulation of vehicle exhaust emissions, new energy power is the inevitable trend of development, this cell cars is the trend of energy, but for technical reasons, these forms of traction batteries are just BYD large-scale applications in the market. It was reported that in 2009, BYD will launch a full car battery, if all battery-powered cars can be fully applied to the market, it would be a revolution in the energy market, either from the environmental or consumer spending on the cost side, are of great advantage.
Batteries power of tomorrow will be the focus of research of various automakers and direction of development for the large car market in the world is there a huge market potential.