2009年1月19日星期一

Adjust the industrial structure, the Guangdong power battery industry contrarian growth

In recent years, China's first economic Province - Guangdong Province, has been advocated to speed up the optimization and upgrading of battery industrial structure adjustment and vigorously develop hi-tech industries, advanced manufacturing industries, encourage enterprises to independent innovation, and follow the road of high-tech and high added value. This orientation in 2008 proved to be very forward-looking. Last year, by the international financial turmoil and economic growth have emerged in Guangdong drop back too much. However, from Guangdong in 2008 the first 10 months of statistical data, the industrial added value of the significant downturn and even negative growth mainly concentrated in the 23 labor-intensive, weak independent innovation capacity of industry, while still maintaining high-tech manufacturing the higher growth rate of 16.6 percent.
Some people go out of business closed, but it was piecemeal and short-sighted, to find an opportunity. In crisis, not only to China's largest toy factory Zhangmutou Jun toy factory jointly represented by a large number of low-end processing factories have fallen, but also high-tech enterprises special power contrarian easy expansion, the acquisition of the global top 500 enterprises Schneider's special dell u4873 ,dell gd761 ,dell d5318,dell 75uyf power system easy Technology Co., Ltd. 60 percent stake in such cases, more ZTE, Huawei and other high-tech enterprise for many years a large number of high-speed growth.
compaq laptop battery power is a new energy and energy-saving products, high-tech category, from the relevant departments of the data show that Guangdong's power battery industry in 2008 is still a steady increase of the year. All this is to benefit from the enterprise optimization and upgrading of industrial structure adjustment. In the current situation, the Guangdong power battery industry, how to go further and seize the "crises" in the "machine", to expand markets, upgrade technology, optimize the structure?
Guangdong to enter the international market is still a huge advantage
Power apple laptop battery industry in Guangdong, there are a large number of enterprises have a strong comprehensive strength, their technology, brand, marketing, production and other aspects of the powerful advantages, in a crisis they can usher in development opportunities,in the international market. Guangdong easy special acquired the global top 500 enterprises Schneider's easy special Power System Technology Co., Ltd. 60 percent stake. In 2008, the easy special export not only has not declined, the first three quarters of the export growth of 60 percent instead. According to the Guangdong Zhicheng Champion Group Bai-liang, vice president, due to the group take the initiative to seek to make innovative changes over the years, adhering to do high-tech products, product sales are still maintaining high economic growth. Although hampered exports, but Guangdong is still the undisputed number one province of China's exports. Power acer laptop battery exports is accounted for half of the whole country. Guangdong region through traders, agents, import and export companies or other forms of direct trade, power battery businesses tens of billions of annual export products. In addition, Canton has been the international buyers to purchase the preferred destination for Chinese products, developed a large number of international buyers visited the exhibition in Guangzhou to buy products procurement habits. Organized by the Guangdong high-profile exhibitions, trade fairs, such as the way of tender, power battery is still able to obtain large numbers of business opportunities to find.
In addition, Guangdong because of its unique geographical advantage, but also is to accelerate the realization of China's export market diversification bridgehead. In the analysts view, the traditional export markets in Europe and the United States needs to shrink, the power acer btp-43d1 , travelmate 220 battery eggs must be scattered in different baskets, and actively explore new international markets, to achieve diversification of the export market in order to resolve the single market brought about by Risk is the only way is bound to demand. With ASEAN, India, Africa, Latin America and other emerging big market trade, Guangdong in relation to other provinces and cities, with transportation, logistics, information, finance, such as a full range of comprehensive comparative advantage. In September 2007, Guangdong and the ASEAN Secretariat signed a memorandum of cooperation to the outside world has brought Guangdong To accelerate the opening up new markets with strong signals.
Rapid domestic demand should be a comprehensive upgrading of enterprises
Guangdong has always been theace btp-63d1,acer batcl50l , travelmate 290 battery power the most important one of the domestic market, the Guangdong Provincial Government recently announced in 2009 of 1.3 trillion investment scale of the whole society, it means that in 2009 the growth rate of investment in Guangdong will be as high as 30%. A substantial increase in investment growth may slowdown in external demand offset the negative effects, so that Guangdong's economy remained stable development momentum. With the accelerated upgrading of the industrial structure in Guangdong and vigorously develop the advanced manufacturing and high technology industries will lead the process of new energy and energy-saving products business grew by leaps and bounds, battery power industry will be able to get more business opportunities.
In recent years, in promoting the building of a conservation-minded society under the guidance of the thinking, energy saving and environment-friendly travelmate 4000 battery , travelmate 2300 battery products have been in the competition to occupy a distinct advantage, low technology content, low value-added products battery power, following the setback in the international market after the , will also run into a wall in the domestic market. In their efforts to enhance the competitiveness of their products at the same time, power battery enterprises should also take a more proactive approach and actively participate in high-quality professional events, for more direct dialogue with our customers an opportunity to enhance customer awareness of products into the customer's procurement perspective, won more orders. Some experts think that the crisis will be eliminated each time a number of enterprises to strengthen a number of enterprises, only a positive response to market changes and acquire the industry dynamic, and constantly improve our overall strength of the enterprise can continue to stay in business in this global financial crisis has eliminated a number of enterprises , but security companies, if nothing also is likely to be eliminated.
Industry boosters starting professional exhibition settled Canton
March 26, 2009, power aspire 1680 battery , aspire 1410 battery professional Exhibition "2009 China (Guangzhou) International Power Battery products and technology exhibition" will be the first gesture in the Canton Fair debut. Spring is one year, bic, Jiangsu sea four Tatsu, TCL gold to the United States CAD batteries, Dongguan HOSSONI precision machinery, ZTE, Emerson, such as hundreds of companies will choose the first leg of spring in Guangzhou. It was learned that the show has been the current Communications Industry Association, Guangdong Province, the Guangdong Provincial Association for the electronics industry, the Guangdong Provincial Association for the automotive industry, Die & Mold Industry Association of Guangdong Province and Guangzhou City, medical device trade associations such as more than a dozen industries and organizations have visited the confirmation, which are will give enterprises more efficient trading opportunities.
The exhibition is the industry's economic boosters. According to the International Association of the Exhibition Industry survey data show that global business transactions through the 70 percent of the forms of exhibitions, directly or indirectly contributed to. Enterprises to promote new products through other channels for the publicity costs 219 pounds, and through the acer lcbtp03003 ,acer aspire 1300 exhibition but only 35 pounds. The success of the exhibition is a successful businessmen temporary club, allowing tens of thousands of professionals to focus emerged. Exhibitors may show a close dialogue with our customers directly with domestic customers, export agents, international buyers contacts led to more orders, and promote enterprise development.
henwei Exhibition Group exhibition company responsible person briefed Zhang Shan, Guangdong Power apple a1079 , apple a1078 industry is the world's most important production bases, R & D base, the consumer market as well as trade centers, and its domestic demand and export a long time to occupy the country more than one-third. But a long time, and even in southern China, Guangdong has been the lack of a high-standard professional exhibition to promote the development of the industry, which to some extent, restricted the South China business exchanges and industrial upgrading. Against this background look at the Canton Fair battery power, even though it is held for the first time in 2009, but its long-term pattern has been set, there are indications that at all levels to turn into southern China and Southeast Asia at the core, the impact of circle, radiation global professional International Exhibition.
Views from the business seems to have confirmed this view. Lithium battery equipment manufacturers HOSSONI leader Dongguan factory machinery, general manager of economic people believe that, with the industrial upgrading and the traction effect of stimulating domestic demand, power battery business will be to upgrade the overall result, thereby to enhance the scientific and technological content of products and market competitiveness , Canton by strong radiation and mature market environment exhibition organized by industry professionals, will greatly promote the industrial development of the industry as a whole, enterprises with thinkpad t43 battery , thinkpad r50 battery power Canton Fair this high-end platform that can better enhance the visibility of products and brands effectiveness.
It was also introduced in the "2009 China (Guangzhou) International Power Battery products and technology exhibition," Over the same period, the Guangdong Provincial Power Industry Association will co-Power Institute of Guangdong Province, "Power World" magazine, "2009 Power Industry peak event", the organizers will invite experts in the industry hope that through this exchange, in order to supply ibm laptop battery,Toshiba laptop battery , toshiba pa3383u-1brs,sony vgp-bps5 ,sony laptop battery,sony pcga-bp2nx, sony pcga-bp2r , sony pcga-bp2s,hp laptop battery,laptop battery and related businesses to provide more development proposals.

2009年1月16日星期五

Practicing Safety With Batteries

Its internal resistance limits the maximum current any battery can produce. Carbon-zinc batteries have a relatively high resistance and produce small currents, on the order of a few hundred milliamperes. Lead-acid, nickel-cadmium, and nickel-hydride batteries have very low internal resistances and can produce prodigious currents.
If you short-circuit the terminals of one of these laptop battery, whatever produces the short circuit--wires, a strip of metal, a coin in your pocket--becomes hot because of resistive heating. For example, you can melt a wrench by placing it across the terminals of a fully charged automotive battery. Or you can start a fire with something inadvertently shorting the terminals of the spare nickel-cadmium battery for your notebook or subnotebook computer. Be careful and never allow anything to touch these battery terminals except the contacts of your notebook PC.
Almost all secondary hp laptop battery is prone to hydrogen generation when they are overcharged because of electrolysis. The sealed cells used in modern computer and cell phone equipment minimizes the danger of this gas igniting and exploding, but the hazard hasn't been entirely eliminated. All sealed cells have safety vents that relieve any excess pressure that builds up inside the cells because of electrolysis. There is a small chance of out-gassed hydrogen igniting, but it is unlikely to make the cell explode.
A greater danger is blocking the sony laptop battery vents, which will prevent the relief of excess internal pressure. This may lead to the cell exploding even without the gas igniting. The vents in secondary cells should never be blocked.
Primary fujitsu laptop battery is usually sealed and not vented. Raising their temperature too high can cause the materials inside to degrade and even boil. Sufficient pressure can build up inside to make the cell explode. Trying to charge a primary cell can thus lead to explosion as can trying to burn batteries in an incinerator or open fire.
Nearly all toshiba pa3383u-1brs contain harmful chemicals of some kind. Lead and cadmium are toxic metals. Lithium is extremely reactive. In fact, pure Lithium metal reacts violently with airborne oxygen and may catch fire spontaneously. It may even react violently with water, even the water meant to put out the fire. Although mercury has been eliminated from most batteries, even carbon-zinc batteries contain manganese, which is regarded as hazardous.
All batteries present some kind of environmental hazard, so be sure to properly dispose of them. Some manufacturers are beginning to provide a means of recycling batteries. Encourage them by taking advantage of their offers.dell u4873 ,dell gd761 ,dell d5318,dell 75uyf,inspiron e1505,inspiron 6000,dell 367759-001,dell 6y270 ,dell c1295 ,hp 367759-001,apple a1079 , apple a1078 .

2009年1月15日星期四

Every Wonder What's Inside a Duracell Battery?

Chemical SystemsAmong the most important factors in designing products around batteries (and batteries themselves) is the amount of power a battery of a given size and weight can produce. After all, the energy source for a device should not handicap the ready use of that device. The chemical reactions in the cell are the most important factor constraining energy density and the usefulness of batteries. In fact, the entire history of battery technology has been mostly a matter of finding and refining battery chemistries to pack more energy in ever-smaller packages.
Today's batteries use a variety of chemical systems, some dating from the late 19th Century as mentioned previously, and some hardly a decade old. The diversity results from each having distinct benefits for particular applications. The following battery chemistries are the most popular for portable computer, cell phone, power system, and peripheral applications:

Carbon-zincGround zero for laptop battery technology is the carbon-zinc cell, the heirs of Georges Leclanché's 1866 invention. Carbon-zinc cells are probably the most common batteries in the world, known under a variety of names including dry cell and flashlight battery. When you think of batteries, it's likely that carbon-zinc cells first come to mind. One company alone, Energizer, sells over six billion carbon-zinc cells each year. They are the lowest priced primary cells. They also have the lowest storage density of any common battery.
One reason carbon-zinc cells are so popular is that the name actually describes two or three different chemistry systems. These include Leclanché cells, zinc chloride cells, and alkaline inspiron 600m battery.

The name describes the basic chemistry of the cells. In the basic carbon-zinc cell, the "carbon" in the name is a cathode current collector--a carbon rod in the center of the cell. The actual material of the cathode is a mixture of manganese dioxide, carbon conductor and electrolyte. The zinc serves as the anode and forms the metal shell of the latitude d510 battery. The electrolyte is a complex mixture of chemicals that typically includes ammonium chloride, manganese dioxide, and zinc chloride.
The electrolyte is the chief difference between Leclanché and zinc chloride cells. The former use a slightly acidic mix of ammonium chloride and zinc chloride in water. The electrolyte in zinc chloride cells is mostly zinc chloride. Zinc chloride cells produce a slightly higher open-circuit voltage than Leclanché cells, 1.6 versus 1.55 volts.

Although zinc chloride cells typically have a greater capacity than Leclanché cells, this difference shrinks under lighter loads so zinc chloride cells are often termed "heavy-duty." In any case, the efficiency of any carbon-zinc cell decreases as the load increases--doubling the current drain more than cuts in half the capacity of the cell. The most efficient strategy is to use as large a cell as practical for a given application. That's why power-hungry toys demand "D" batteries and low-drain transistor radios make do with latitude d500 battery.

Alkaline batteries, no matter the advertised claims, are little more than an enhancement of 19th Century carbon-zinc technology. The biggest change in chemistry is an alteration to the chemical mix in the electrolyte that makes it more alkaline (what did you expect?). This change helps to increase storage density and shelf life of the cells.
The construction (as opposed to chemistry) of alkaline cells differs significantly from ordinary carbon-zinc cells, however. Alkaline cells are effectively turned inside-out. The shell of the alkaline battery is nothing more than that--a protective shell--and it does not play a part in the overall chemical reaction. The anode of the cell is a gelled mixture of powered zinc combined with the electrolyte (itself a mixture of potassium hydroxide--a strong alkaline-and water), and the combination is linked to the negative terminal of the cell by a brass spike running up the middle of the cell. The cathode, a mixture of carbon and manganese dioxide, surrounds the anode and electrolyte, separated by a layer of non-woven fabric such as polyester. The figure below illustrates the construction of a Duracell alkaline latitude d520 battery.


Depending on the application, alkaline cells can last for four to nine times the life of more traditional carbon-zinc cells. The advantage is greatest under heavy loads that are infrequently used--that is, something that draws heavy current for an hour once day rather than a few minutes of each hour.
Carbon-zinc cells nominally produce 1.5 volts, but this full voltage is only available when little current is drawn from the cell during its initial discharge. The voltage of the cell diminishes as the load to the cell increases and as the charge of the cell decreases.
Standard nine-volt latitude d600 battery use carbon-zinc chemistry. To produce the higher voltage, six separate carbon-zinc cells are stacked and connected in series inside each battery. Higher voltage carbon-zinc cells can be made similarly. In the 1950's, "B" batteries made for vacuum-tube portable radios produced 45 to 90 volts from stacks of carbon-zinc cells.
Ordinarily, alkaline batteries cannot be recharged because the chemical reactions in the cell cannot be readily reversed. If you attempt to recharge an ordinary carbon-zinc cell, it acts more like a resistor than storage cell, turning the electricity you apply to it into heat. Apply too much power to a cell and it will heat up enough to explode--a good reason never to attempt to recharge carbon-zinc or alkaline latitude d610 battery,dell 312-0068 , dell 6y270 .
The exceptions to this rule are the Renewal battery produced under license by Rayovac Corporation. The Renewal design relies on a two-prong attack on carbon-zinc technology. The Renewal cell is fabricated differently from a standard cell. More importantly, Renewal batteries are part of a system that requires a special battery charger. Instead of applying a nearly constant current to recharge the cells, the Renewal charger adds power in a series of pulses. A microprocessor in the charger monitors how each pulse affects the cell to prevent overheating. Even with the novel charger, however, Renewal cells have a limited life, typically between 25 and 100 charge-discharge cycles. In that Renewal cells cost only about twice as much as standard alkaline cells, they can be very cost-effective in some applications,inspiron 2600 battery, inspiron 2650 battery , dell 1g222 , dell bat3151l8latitude x300 battery , dell w0465 , inspiron 2000 battery , latitude ls battery , dell 2834t , dell 4834t.

2009年1月12日星期一

Recycling Seal Lead Acid Batteries

Seal Lead Acid laptop batteries have a long history of being one of the most environmentally friendly resources on the free market and are actually “greener” then soft drink cans, beer cans, newspapers, glass bottles, and tires. Indeed lead-acid batteries are an environmental success story of our time. More than 97 percent of all battery lead is recycled. This is almost twice as much as aluminum soft drink and beer cans, newspapers, glass bottles and tires. In fact lead-acid batteries are the most recycled consumer product of our time. How are lead acid Toshiba laptop battery recycled and reused in brand new batteries. What is the recycling process of lead acid batteries? Let’s find out.


Lead acid ibm laptop battery are transported via trucks to recycling centers. Once at recycling centers batteries are broken apart in a hammermill, which is a machine that hammers the battery into pieces. At its most basic level a hammermill is a steel drum that contains a cross-shaped rotor. On the rotors are mounted hammers that pivot when the rotor spins. When the rotor spins the hammers swing and when the battery fed into the drum the batteries broken into pieces.


Once broken the compaq laptop battery components are separated into 3 categories:


Plastics


Broken pieces of polypropylene plastic are collected, washed, blown dry and sent to a plastic recycler. At the plastic recycler the broken pieces of polypropylene are melted at the plastics correct melting point (or glass transition temperature (Tg), which is the temperature at which a polymer changes from hard and brittle to soft and pliable). Then the molten plastic is passed through a machine called an extruder that shapes the molten plastic into pellets which are then sold back to apple laptop battery manufacturers to begin the new battery’s manufacturing process.



Lead


The lead acid acer laptop battery lead grids, lead oxide and other lead parts are cleaned and then heated to 621.5 degrees Fahrenheit - leads melting point. After the lead reaches its melting point the molten lead is poured into ingot molds. The leads impurities, known as dross, floats to the top and subsequently scraped away and then the ingots sit there thill they are cooled. After cooling the ingots are sold back to manufacturers for use in new lead plate production.


Electrolyte - Sulfuric Acid


Spent battery acid can be neutralized using an industrial grade baking soda compound. After neutralization the acid turns into water, treated, cleaned to meet clean water standards, and then released into the public sewer system. Or another option would be to convert spent battery acid into sodium sulfate, which is used in laundry detergent, glass and textile manufacturing. Considering that a typical pavilion dv9000 battery ,sony pcga-bp1n , sony pcga-bp2nx, sony pcga-bp2r,sony pcga-bp71 , sony vgp-bpl2 , sony vgp-bps3 , sony vgp-bps5 ,sony vgp-bps8 ,sony laptop battery recycling plant recovers 10,000 tons of lead, about 4000 tons of sulphuric acid, and can produce about 6000 tons of sodium sulphate – there is definitely some merit into this conversion process.




How Many Times Can I Charge My Battery?


500 million lithium notebook batteries are in use today. A very big number indeed and the chances that you are one of them are quite high. You could have a laptop, PDA, MP3 or even a cell-phone, all of which more likely than not has a lithium ion or a lithium polymer chemical based battery system. If so then one question that you will have eventually is how many times will I be able to charge the hp laptop battery before it is effectively dead?? Is it 300 times, 400 times, or 500 times? The answer is between 300-500 times.


But what does that answer mean? As this article will explain the charge cycle is quite complex and involves the replenishment of electrons. In order to get a beginning understanding of what actually is taking place during a charge and discharge cycle we need to understand: what a sony laptop battery is, how it works, what it produces, and finally what happens when you charge and discharge.


What is a Battery?


As I have written in other articles a fujitsu laptop battery is a device that converts chemical energy into electrical energy. Batteries have two electrodes, an anode (the negative end) and a cathode (the positive end). Collectively the anode and the cathode are called the electrodes. What is positve and what is the negative terminal? It would be great to simply say that the anode is negative and the cathode is positive, however, that is not always the case. Somtimes the opposite is true depending on battery technology. In between the toshiba pa3383u-1brs ’s two electrodes runs an electrical current caused primarily from a voltage differential between the anode and cathode. The voltage runs through a chemical called an electrolyte (which can be either be in a liquid, solid, or gel state). This battery consisting of two electrodes is called a voltaic cell. Most batteries today are advance forms of the voltaic cells and have additional technology packed into the battery casing to support the overall system and its connected? device. These controls include the connector, fuse, charge and discharge FETs, the cell pack, the sense resistor (RSENSE), the primary and secondary protection ICs, the fuel-gauge IC thermistor, pc board, and the EEPROM or firmware for the fuel-gauge IC.


How Does a Battery Work and What Does It Produce?


We know that the result of a battery converting chemical energy into electrical energy allows us to turn on our laptop, PDA, MP3 or even a cell-phone. But how does the conversion process take place? As stated above the batteries we use today are variable changes of the voltaic pile. In addition to the controls I listed above today’s battery are made up of plates of reactive chemicals (Li-ion, Li-po, NIMH, NICD) separated by an electrolyte barrier (which can be either be in a liquid, solid, or gel state), and subsequently polarized so all the electrons gather on one side. The system was designed to separate both positive and negative electrons. Then after separation an electron exchange occurs and a current of electron flow moves electrons to and from the anode and cathode. Simultaneously an electrochemical reaction takes place inside the hp f4098a to replenish the electrons. The effect is a chemical process that creates electrochemical energy.


Now the electrochemical reaction that is taking place is a chemical change that is necessary in order to create hp f4809a. One factor that needs to be understood is that electricity is the flow of electrons. Specifically, electricity is a property of subatomic particles which couples to electromagnetic fields and causes attractive and repulsive forces between them. This repulsive force between the subatomic particles creates an electric current; the flow of electric charge transports energy from one atom to another. This electrical current is measured in amperes, where 1 ampere is the flow of 62,000,000,000,000,000,000 electrons per second!


Electricity therefore is a created energy source. All electricity in fact is a created source made or converted from coal, natural gas, oil, nuclear power, wind, heat, sun, water, biomass and or other chemicals. In hp 367759-001 today electricity is created by two chemicals in a solution for example: {a Solution of Lithium hexaflourophosphate (LiPF6) - a mixture of Organic Solvents: [Ethylene Carbonate (EC) + DiEthyl Carbonate (DMC) + DiEthyl Carbonate (DEC) + Ethyl Acetate (EA)]}


Charging and Discharging Your Battery


Charge cycling a hp f4812a ,compaq 319411-001 means to completely discharge (or drain) a battery’s created electricity to where there is a charge of less than a 1% capacity remaining. At this point the power to the device will cease and your device will power off. Then after the power is off you recharge the battery to 100% capacity using a power adapter either from a wall socket for example. Regardless of how you charge the battery that process of discharging and charging represents one complete charge cycle.


I noted above that an electrochemical reaction takes place inside the presario 2100 battery , presario 2500 battery to replenish the electrons. The effect is a chemical process that creates electrical energy (electrochemical energy). Lithium is used, amongst other chemicals, as a battery anode material due to its high electrochemical potential. In fact the energy of some lithium-based cells can be five times greater than an equivalent-sized lead-acid cell and three times greater than alkaline batteries. Lithium cells often have a starting voltage of 3.0 V. This means that batteries can be lighter in weight, have lower per-use costs, and have higher and more stable voltage profiles.


Charging lithium can be thought of as the introduction of ions or movement of chemistry. To move the lithium chemistry (lithium-ion, lithium polymer, lithium iron phosphate, etc) you have to have a minimum voltage applied to the lithium. Most hp f2299a , hp f3172a cells are charged to 4.2 volts with relative safe workings at about 3.8 volts. Anything less than 3.3 volts will not be enough to charge or move the chemistry. One thing to note here is that volts are an algorithmic measurement of current. So in a sense to create current through your battery you have to introduce current into your battery’s lithium .


Introducing current into your lithium is called intercalation. Intercalation is the joining of a molecule (or molecule group) between two other molecules (or groups). When it comes to charging your hp hstnn-db02,presario r3000 battery ,pavilion dv1000 battery ,pavilion zd7000 battery , pp2182d battery , hp 338794-001,sony pcga-bp2s , sony pcga-bp2t , sony pcga-bp2v ,sony vgp-bps5 you are in effect pushing ions in and out of solid lithium compounds. These compounds have minuscule spaces between the crystallized planes for small ions, such as lithium, to insert themselves from a force of current. In effect ionizing the lithium loads the crystal planes to the point where they are forced into a current flow. The current flow is then channeled back and forth from anode to cathode and thereby creating an electrical flow to power on your device. Again this can done 300-500 times. In my next article we will look at why batteries have limited charge cycles.




2009年1月11日星期日

Lithium Ion Batteries Are Sensitive to Heat

Over 15 million students are enrolled in fall college classes across the United States according to a US Census Bureau study in 2004. Using that number as a base it can be projected that the fall of 2008 should see a slight up-tick in college enrollees. Interestingly the number of college students that are going to college with laptop computers have increased by 28% compared to 42% of college students in 2004. This means that nearly 70% of enrolled students are using laptop computers. In real numbers that represents 10,500,000 laptop computers.
Now listen up college students – your laptop battery is more than likely a Li-ion battery and if it is then there is a natural tendency to keep your laptop plugged into a wall outlet when you are close to one. You may also find that you are actually “plugged” in to a wall outlet more than you are not and there in lies a problem. When your laptop is plugged into a wall outlet your battery heats up big time and heat and lithium do not mix well together.
Hold on! You have to charge laptop battery. Yes that is true, but you do not have to keep your laptop plugged into a wall outlet for the entire school year! But won’t that reduce my battery life if I’m constantly powered from the battery?
Your battery will diminish in capacity – the ability to charge and power your laptop. That is a fact and a natural consequence of hp laptop battery today. This diminishing power performance is called battery degradation and power loss. I have written on this topic before and you can read about it on my blog but on a high level a battery over time degrades and eventually stops working, this is no surprise, and it occurs due to the following technical processes: declining capacity, increasing internal resistance, elevated self-discharge, premature voltage cut-off on discharge.
So should you constantly keep your sony laptop battery charged at 100% capacity? No you should not. Why? To answer that question let’s look at what is occurring when you charge a battery. When charging your battery you are forcing electrical current into a battery cell from a charger. The force of electrical current causes temperature increases.
Now it is true that contained within your laptop battery are integrated power management circuits that are designed to protect against over-voltage and under-voltage conditions that increase heat in the fujitsu laptop battery but one factor of how well a battery is being protected during a charge depends on the ratio of the heating rate versus the dissipation rate. If the heating rate is higher then the dissipation rate then thermal runaway will occur (leaking, smoking, gas venting, flames).
Now don’t go into panic mode since the integrated circuits are really good at keeping the heating rate lower than the dissipation rate and you are in extremely minimal danger of thermal runaway occurring.? But the practice of keeping your battery charged continuously can negatively affect your battery’s longevity. So charge your battery and then run your laptop on dell u4873 ,dell gd761 ,dell d5318,dell 75uyf,inspiron e1505,inspiron 6000,dell 367759-001,dell c1295 ,dell 6y270 ,hp 367759-001,sony vgp-bps5 power until you have to charge it again.

How Many Cells Are In A Battery

Question from a reader: “How many cells are in the Toshiba Satellite M105-S3041 Laptop Battery? The battery is for a Toshiba Satellite M105-S3041 and its technical ratings are 10.8 volts 8800 mAh, Lithium Ion
The question from the reader is a great question for it gets to the heart of digital camera battery manufacturing and begins to unravel the power of a battery. The answer is simply: 12 cells. But what does the answer mean and how does the number of cells relate to the overall value of a battery? Let’s find out…
What is a camcorder battery and how does it create energy?
A battery is a device that converts chemical energy into electrical energy. NP-FC10 have two electrodes, an anode (the negative end) and a cathode (the positive end). Collectively the anode and the cathode are called the electrodes. What is positve and what is the negative terminal? It would be great to simply say that the anode is negative and the cathode is positive, however, that is not always the case. Somtimes the opposite is true depending on battery technology.
In between the battery’s two electrodes runs an electrical current caused primarily from a voltage differential between the anode and cathode. The voltage runs through a chemical called an electrolyte (which can be either liquid or solid). This DSC-P8 consisting of two electrodes is called a voltaic cell.
Therefore DSC-P2 in effect create electrochemical energy. In order to convert chemical energy into electrical energy there is a chain of events that have to occur prior to the creation of electrical energy. Key to the creation of electrochemical energy in batteries is that electrical energy is injected into two chemicals in a solution. Electricity is introduced into a battery via a charger. The charger acts as a conduit of the pushing electrons that are forcing their way into the chemical lithium. This charge process involves intercalation: the joining of a molecule (or molecule group) between two other molecules (or groups). Intercalation is the process of ions being pushed by electrical current into solid lithium compounds. Lithium is one of the chemical components used to create electrical energy in batteries. Lithium compounds have minuscule spaces between the crystallized planes for small ions to insert themselves from a force of current. Ionizing lithium loads the crystal planes to the point where they are forced into a current flow. Intercalation replenishes, in effect, lithium but the net result of ionization is the ultimate depletion of the lithium reactive property. You could say if you use it you will lose it!
But what makes lithium good for batteries is that DSC-P3 is one of the metals in the alkali group (the other metals include Sodium, Potassium, Rubidium, Cesium, and Francium). Lithium is a highly reactive metal. Lithium has only one electron in its outer shell (two electrons in its inner shell), which makes it chemically “ready” to lose that one electron in ionic bonding with other elements. Lithium is used as a battery anode material (due to its high electrochemical potential). Electrochemical potential is the sum of the chemical potential and the electrical potential. The higher the electrochemical potential the better the electrical current yields. In some lithium-based cells the electrochemical potential can be five times greater than an equivalent-sized lead-acid cell and three times greater than alkaline batteries. One other core advantage that lithium has is that it is soft and bendable which allows for tight configurations in small cell designs (PDAs. Laptops, Cameras etc…).
What Type of Lithium Cell is Used in Laptops
Now this brings us to DSC-P5 cells and our original question from the reader. Lithium based battery cells are good but there are a variety of lithium based battery cells. For example the lithium based cell identified as 18650 is one of the most common battery cell on the market for laptops. 18650 is manufactured by many manufacturers including many private branded companies to public companies like LG, Sony, Sanyo, Samsung, Panasonic.
18650 is a 3.6V cylindrical Li-Ion cell. 18650 has no memory effect (distinguish between digital memory effect) and longer storage life than NiMH DSC-P7 cells. 18650 is light weight and has a high energy density. It is in effect perfect for building batteries for laptop and other portable power devices.
The additional technical specifications for the 18650 DSC-P9 cell include:
Nominal Voltage Average 3.7 V – the concept of nominal voltage is that voltage range exists depending on the number of cells in the DSC-P10.
Nominal Capacity - 2200 mAh (above 2200 the stability of lithium based cells is called into question)
Max. Charging Current - 2.4 Amps Max.
Max. Discharging Current - 4.6 Amps max.
Dimensions (DxH) 18.3 mm (Max 18.4) x 64.9 mm (Max 65.1)
Weight 46.5 g (1.64 oz)
Internal Impedance Internal Impedance: less or equal to 90 ohms
Cycle Performance is 80% of initial capacity at 300 cycles
Now as stated above the reader asked how many cells were in the Toshiba Satellite M105-S3041 Laptop Battery? The battery is rated at 10.8 volts and a capacity of 8800 mAh.
As I mentioned above the nominal voltage average is 3.7V. Some manufacturers may use 3.6V and some may use 3.7V. In the case of a laptop hp 367759-001,sony vgp-bps5 ,toshiba pa3383u-1brs,apple a1079 , apple a1078 with 10.8V the nominal voltage rating used is 3.6V. Thus if we divide 10.8V by 3.6V we get 3. Thus 3 cells in a series. We also know that the batteries capacity is 8800 mAh. We know the nominal capacity is 2200 mAh. Therefore if we divide 8800 mAh by 2200 mAh then we get 4 in parallel.
Therefore we have 3 cells in series X 4 cells in parallel equals 12 cells in total.

2009年1月8日星期四

Lithium ion Batteries Explode?

"A cellphone exploded in his living room last year, causing up to $100,000 in damages. Ortega and his family had to live in a trailer for a few months while their house in California was fixed" as reported in the Chicago Tribune back in 2006.? Without question the impact that the fire had on this family is devastating but what is alarming about that fire is that through the fire and insurance investigation the cause was found to be due to a cell phone's lithium-ion battery failure and subsequent spontaneous combustion. What? How is that possible?
If you have a PDA, MP3, MP4, Laptop, Cell Phone, Smartphone, DVD player, or other electronic device then more likely then not the battery within your device is a high capacity smart battery pack (the chemical base being lithium ion). What is a high capacity smart battery pack? A high capacity smart laptop battery pack is a complex battery system designed to power high tech consumer electronic products.
What differentiates smart dell c1295 from standard batteries is the specialized hardware that provides calculated on demand current as well as predicted information.
This specialized hardware includes:
the connector
the fuse
the charge and discharge FETs
the cell pack
the sense resistor (RSENSE)
the primary and secondary protection ICs
the fuel-gauge IC
the thermistor
the pc board
the EEPROM
Each of these components working in concert allows electrical current to be created, controlled, and transferred to your individual electronic device on demand. Your battery in effect was purposely designed to be an energy dense power pack, which used within its properly designed purpose you can feel comfortable that your inspiron 6000 battery will not explode.
How can I say that you will “feel comfortable” because statistically your hp laptop battery will not explode or even become defective! The report about the fire at the Ortega’s family house is one of 339 battery-related overheating incidents tracked by the Consumer Product Safety Commission since 2003. 339 overheating cases sounds like a lot but when compared to the well over 100,000,000 battery related devices that have been bought by consumer since 2003 it represents a very small percentage (.000003) of all battery related devices on the market.
However when smart batteries do explode, bubble, or warp the cause is due to an internal cell short that may cause the dell 310-6321 to overheat and explode, posing a potential hazard to consumers.
To isolate the ultimate cause of the short circuit a study of every aspect of the smart inspiron 9300 battery development and customer use must be considered including:
the specialized each of the hardware components
the cell design
the manufacturing processes
battery operation in extreme conditions
intentional battery abuse
unintentional abuse through the use of the battery in any device, product, and or in any conceivable manner other than what the dell 6y270 was specifically designed to be used for and in
So yes it is possible to have high capacity smart dell u4873 ,dell gd761 ,dell d5318,dell 75uyf,inspiron e1505,inspiron 6000,dell 367759-001 pack explode and cause unexpected damage but as we have seen it is very unlikely considering the sheer quantity of lithium ion based batteries on the market.

2009年1月7日星期三

The development of China's battery industry and challenge status

According to the report of the notebook battery industry statistics show that 2006 profit margins battery manufacturers are suffering from a huge impact on the expansion of loss-making enterprises, some enterprises have closed down and converting, China's battery industry is facing severe challenges. Industry-wide economic decline caused by the main reasons include:First, the laptop battery materials prices continue to rise China's battery industry is currently faced with the serious problem of "internal and external problems" troubled. Because of all countries in the world to enhance environmental protection requirements, some developed countries have stopped the lead, cadmium, nickel and other non-ferrous heavy metals in their production, in order to pass its own environmental pollution; This resulted in soaring prices of electrolytic lead, from 2003 4,500 yuan per tonne early this year rose to 13,000 yuan per tonne; nickel prices from the end of last year to about 150,000 yuan per ton, and now risen to close to 450,000 yuan per ton. In addition, raw materials, cobalt, cadmium, natural manganese powder, zinc prices have soared to varying degrees. Because the prices of export products is that, with the contract and had been fixed long ago, raw material prices, the price can not be synchronized to follow, resulting in the "export more, the greater the loss" situation. In addition, domestic battery production fierce competition among enterprises, leading to lower their rate of accumulation in recent years, the weaker its ability to resist risks; these factors are a direct result of mutual tangled enterprises struggling domestic battery and had to have reduced the scale of production and marketing in order to reduce losses . Second, the export tax rebate policy adjustment on the impact of the camcorder battery industry September 14, 2006, the State Ministry of Finance and other ministries jointly issued five "on the reorientation of the export tax rebate rate of some commodities and the addition of the processing trade ban catalog notice." According to "notice" provisions, lead-acid batteries, dell c1295 the cancellation of export tax rebate policy; and as early as 2004, the batteries began to export tax rebate rate cut year after year, and progressively the full cancellation of tax rebates. The current lead-acid batteries, Ni-Cd battery and has been included in the processing trade ban catalog, for inclusion in this directory of imports of goods are subject to import tariffs and import-related taxes. According to relevant statistics, the export tax rebate rate for every 1 percentage point reduction on the equivalent of the cost of exports in general trade increased by about 1 percentage point; So the introduction of the export tax rebate policy, the export market will reduce the competitiveness of the battery, which will speed up the battery industry to re-wash licensing, a number of serious lack of competitiveness of SMEs will lose money, or even face closure. Third, foreign green barriers on the impact of China's battery industry According to EU's "Official Gazette" The recent promulgation of digital camera batteries and battery directive batteries for lead, cadmium, mercury content in a more stringent target, and involves the recovery of the exorbitant costs. RoSH based REACH regulations and directives to improve the battery registration fees and testing fees, substantial increase in battery production costs and the cost of export sales. EU and other developed countries frequently set up a "green barrier", which have resulted in a substantial increase in exports of batteries cost, some SMEs had to because of economic reasons and technical reasons to give up overseas markets. Fourth, foreign anti-dumping and technical barriers on the impact of China's Dell battery industry China's battery industry after another 337 hit the United States to investigate the case of alkaline manganese batteries, the United States to investigate the case of 337 lead-acid batteries, the United States Ni-MH battery charge royalties Chinese companies, the United States and Japan lithium-ion battery patent case of intellectual property rights and so on, in order to respond, consumption China's enterprises involved in the case spent a great deal of manpower, material and financial resources, sales networks have been seriously affected. Recently, China's apple battery industry has also suffered Korea alkaline manganese battery of anti-dumping sunset review, India sunset review of anti-dumping batteries. Has gone through the lead-acid batteries and other products for more than a dozen anti-dumping, battery by a greater impact on export trade. Some 337 anti-dumping cases and investigations in connection with the case enterprises do not respond, which led the industry as a whole out of the prosecution of local regional market. In the current mechanism for responding to lack of funds, the enterprises under immense pressure. Fifth, the appreciation of the renminbi against the impact of the apple a1078 industry RMB exchange rate in 2005 from 1:8.3, adjusting for the current around 1:7.5. China's battery production by about 80% for exports, the appreciation of the renminbi, and the batteries it difficult to raise the export price is obviously the cost of exports to improve the battery so that the economic efficiency of enterprises decreased. Sixth, transport costs to improve With the energy crisis, the apple a1079 to raise transportation costs. Traffic in many parts of goalkeeper lead-acid batteries and nickel-cadmium batteries regarded as dangerous goods transport, and forced recruitment costs and increase the burden on enterprises, the impact of economic benefits. 7, the battery industry grim situation of occupational hazards, environmental protection investment to improve governance Lead-acid batteries and nickel-cadmium batteries and other basic raw materials are mainly positive and negative lead, cadmium, nickel and other non-ferrous heavy metal compounds, especially metals cadmium and its ion has a strong toxicity and poisoning effect, the manufacturing process of the dust raised, arising from waste water and waste pollution through a variety of ways by the body after intake will continue to deposition, which play a role, eventually leading to osteoporosis bone poisoned, hematopoietic function and kidney damage. Battery contaminated soil or water, and once again through the growth of plants, vegetables, after the depth of invasion against the human body. To sum up, China's enterprises are facing difficulties dell 6y270 , for which China Battery Industry Association will actively guide enterprises to adjust product mix, to diversify the direction of development; while enterprises should strengthen the technical, technological and equipment innovations, improve the utilization of raw materials and improve the utilization of resources, as much as possible to lower prices of raw materials due to the adverse impact; actively improve the production process, eliminate backward production capacity to speed up the pace of the transition as soon as possible to the production of high efficiency, environmental protection, energy saving battery direction to promote sustainable development of the battery industry.