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Computer Optical mouse Technical

17 Aug

1. Sensitivity variation
Optical mouse sensitivity variation is common fault , specific performance is move the mouse , the cursor is unresponsive , do not listen to the command . Failure cause and solution is :

1 ) LED , or the aging of photosensitive components : optical mouse integrated within the core of IC has a constant current circuit , the LED operating current constant at about 50mA, high-grade intermittent sampling technique commonly used mouse , send the current is intermittent conduction of ( Sampling frequency of about 5KHz), can be subject to the same dell xps m1330 battery power to improve detection LED power , from toshiba pa3399u-1bas, so high sensitivity . Some optical mouse manufacturers to improve the sensitivity , increased man-made light-emitting diode operating current , increase of transmission function . This will lead to early aging of light-emitting diodes . At the receiving end , if using low quality phototransistor , long working hours , and also the natural aging , resulting in deterioration of sensitivity . At this point, only the replacement of the same type of LED or photodiode .

2) Optical Receiver System Offset, focal length is not aligned . Optical Mouse is the use of two pairs of mutually perpendicular within the photoelectric detector , with photovoltaic panels to work . Issued from the vgp-bps8  light emitting diode , light in the optical panel , the reflected light by the focus once again after reflection by the mirror , adjusting its transmission path , by photodiode receiver to form a pulse signal , pulse signal and phase determines the number of mouse Moving speed and direction . Launch and the lens optical mouse System Components are combined in one , fixed the mouse ‘s casing , while the phototransistor is fixed at the circuit board , the location of the two must be quite accurate , factory calibration of the position, the LED fixed with vch hot melt adhesive The lens components , and if the use of the process, touching or shaking the mouse was cast too large , it is possible to make hot melt off , LED shift . If the light-emitting diodes deviate from the calibrated position , from the photovoltaic panels to the light reflection could not reach the photodiode . At this point , we must patiently adjusting LED position , so as to restore in situ until the horizontal and vertical direction to move the pointer up to the most sensitive , and then glue a small amount of 502 LED fixed position, close the lid can be .

3) The impact of outside light . In order to prevent external light effects , the exposed part of the lens component is the opaque black paper cover , and so light in the black box is passed , if the black paper off , leading to the outside world to the photodiode light shines on , it will cause photosensitive Tube saturation , the data are not the right signal processing circuit , resulting in lower sensitivity .

4 ) lens channel with pollution , so that light can not be successfully reached . Because of poor working environment , with pollution, long time , and dirt attached to the LED , photodiode , lens and mirror surface , blocking the light receiving optical path so that unreasonable . Approach is to use cotton balls dipped ethanol scrub , scrub the parts , including LED , sony vgp-bps9 battery, lens and mirror , photodiode surface , we should pay attention to ethanol must be pure , or else they will become more dirty washing , can also use the water Ethanol washing , the targeting lens and reflective lens Oh deep breath, and then gently wipe clean cotton swab , until smooth as ever been .

5) PV panels wear or malposition . Optical mouse optical black and white board bearing many small lattice , light to dark when the grid was a black absorption phototransistor will not receive the reflected light . On the contrary , if the shine white lattice on the phototransistor will be able to receive the reflected light . Use , be aware of photovoltaic panels clean and good photographic conditions , while the mouse position relative to the photovoltaic panels to be positive and have skewed position of photovoltaic panels or photovoltaic panels wear severe , then make the reflected light pulse distortion or blurred Clear , the circuit can not identify which led to deterioration of the mouse sensitivity .

2 . mouse positioning allowed

Failure showed the mouse position uncertainty or drift often occurs for no reason , failure reasons are:

1) The impact of stray light from outside . Right now the pursuit of some pretty good light transmittance beautiful shell , if the optical shield is not good, plus around the light interference , then it is easy to affect the transmission of optical signals within the vgp-bpl5a mouse , the interference of pulses will be generated Malfunction caused the mouse .

2 ) There are Weld circuit if the circuit will cause interference mixed pulses , the circuit from working properly . At this point, need to carefully check the circuit solder joints , especially in certain vulnerable to power the site. Found that Weld point, electric soldering iron can repair welding .

3 ) poor quality crystal , or IC , affected by temperature , so that frequency drift instability or generated , then , can only use the same model , with the frequency of the integrated circuit or the crystal replaced .

 
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Do best of battery recycling problem

29 Jul

Currently of concern in Jiangsu Province Electric Bicycle countryside finally substantive progress. Recently, the successful bidder for 52 rural areas in Jiangsu electric bike companies signed with the Department of Commerce, paid a deposit, which means consumers will soon be able to receive subsidy.

Electric bicycle to the countryside, industry and consumers look forward to for a long time. Market system of Jiangsu Provincial Department of Commerce Deputy Director Bian Yibin introduced signed after the end of the record needs to improve the sales network, operations training, receiving national electric bicycle to the countryside marked cards, organization of production dell latitude d830 battery , this process can be concluded about the end of this month. By then, consumers will be able to receive subsidies.

According to reports, the 52 companies of 658 sections selected province countryside bike catalog, of which 28 local enterprises. The reporters found that the price of these electric vehicles ranging from 1,200 yuan -3 500 yuan, 2,000 yuan of which the majority model. Home appliances to the countryside than in the past, the electric bicycle models based more extensive benefit more people, in addition to farmers, the state-owned agricultural, forestry workers where to buy in the account can also be awarded a subsidized electric bike. Currently, 13% of the sales price to give financial subsidies, the maximum subsidy 260 yuan, the purchase of two per household dell studio 1535 battery .

Start electric vehicles to rural areas, aimed at stimulating consumption. Cycling Association of Jiangsu Province Lu Jinlong analysis, the countryside will boost the national increase of 500 000 electric bicycle sales, according to the average price of 2,000 yuan each calculated to increase by 10 million sales, “the country’s total output of electric bicycles, Jiangsu 1 / 3 , The national 10 provinces and cities new electric bicycle to the countryside, successful products are the figures of Jiangsu enterprises, 10 billion of Soviet enterprises certainly share the bulk of the cake. ”

Huge market, from another point of view, is also a huge pollution problems. Insiders pointed out that electric bicycles to the countryside, is a must benefit the people, companies have to market a good thing. But the good good, still a lot of things to do, battery recycling is an important part.

At present, the electric bicycle and multi-use lead-acid batteries Lithium batteries vgp-bps8 battery , sony vgp-bps9 battery, which are mostly lead-acid batteries. Interview, echoed the views of two ears: lead acid battery electric bicycle company, said pollution and solid waste disposal in the industry that much pollution. How things in the end? Kai Yan Electronic Co., Ltd. Nanjing Hua-Ming Chen, general manager explained, sealed lead-acid battery is really no pollution, recycling link at the end of life, “Once the dismantling disposed of improperly, it will on the air, soil and water pollution.”

Suzhou Yadi electric car company’s services director, Tian Kai, Minister of introduction, in the city, electric vehicle batteries generally use 1-2 years, while the rural areas, more frequent use of electric bicycles, battery life will be shortened accordingly. One can imagine, with the electric bike the countryside, the used batteries will be more and more.

Waste lead-acid batteries now come back to where? Recycling of waste batteries in Jiang Yin Chunxing Yong-Gang Ma, vice president of the Group survey found that: a large part of being self-employed and acquisitions, distributors TM, a small flow of formal treatment plant. “In rural areas, free disposal of used batteries is even more serious.” Yong-Gang Ma said, the rural market a wide range of large, unlike the city has a relatively good recovery networks and channels, more cases of disorderly disposal. Press survey found that collection of waste electric vehicle batteries, disorderly phenomena – some scrap buyers will lead pick apart the old battery, and high lead acid battery inside was abandoned, becoming a new source of pollution. Some of the old battery recycling, the refurbished listed again, for a lot of money profits from unscrupulous traders.

This has been worrying the rural environment, rural areas with large-scale electric bicycle, the future disposal of waste batteries will be a difficult task. Chen Feng, head of provincial solid waste center, said for now, to electric bicycle battery recycling under regulation, addition to the bill of sale for distributors, manufacturers entrustment agreements, dell xps m1330 battery the relevant business license and permit, shall also submit, and handle distributors and electric bicycles, battery manufacturer’s recycling disposal agreement and full supervision of its performance. This is the province in the electric vehicle has made arrangements for the countryside agreement, ask the enterprises with the dealer and supplier of lead acid batteries battery recycling agreements were signed, lead-acid battery suppliers have their own lead-acid battery recycling need qualifications or have qualified recycling recycling companies signed the agreement. The key is to see whether it is fully implemented.

The gradual dismantling of waste battery recycling standard, is expected to ease long dismantling business, “eat less”, “hungry” problem, but how effective, needs to market test hp pavilion dv3000 battery vostro 1200 battery . Yong-Gang Ma told reporters that at present, promoting the countryside by bike, Jiangsu has five lead-acid battery recycling plant contract with the agreement, which is expected to increase the company’s raw material supply.

 
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The reason that we cannot unplug on vocation

05 Jul

Driving south from Ohio with his wife and two children on Thursday, Steve Daly stopped in the sphere of Tennessee in lieu of what’s advertised to the same degree the world’s top ice cream. In the manner of ordering, he pithily switched banned of vacation mode to check his e-mail on his phone.

His household nags him in the region of his e-mail routine, but in lieu of Daly, it’s the solitary way to boast a satisfactory vacation.

“The anxiety is truthful not knowing — so being able to check the inbox and go to see what’s up for grabs on, if no matter which, is what did you say? Allows me to relax,” says Daly, 39, a self-employed machinery consultant in the sphere of Cincinnati, Ohio.

Daly is not on your own. Many relations can’t leave on vacation with no worrying in the region of their inboxes. And with the initiation of smartphones, it’s all too at ease to keep labor in the sphere of your pouch as soon as you travel.

“You keep sphere on you, so to chat, as soon as you’re wearisome to keep on top of everything to boot in the sphere of your life,” says Brian Uzzi, professor of leadership by the side of Northwestern University’s Kellogg educate of Management.

With labor and individual life integrated into smartphones — and messages from your boss truthful single click away from a plan of your destination — it’s tiring to separate the two, Uzzi says.

Surrounded by computers and handheld policy by the side of labor and by the side of land of your birth, relations are accustomed to having e-mail inside get hold of not quite all era, making it unbreakable to move gears on vacation, says Kate Muller, director of psychology training by the side of Montefiore therapeutic core in the sphere of the Bronx, contemporary York.

The impulse to check messages habitually relates to a psychological rule called a up-and-down reinforcement schedule, says Uzzi. With the aim of income as soon as animals — or else humans — are content indiscriminately in lieu of a precise behavior, it’s harder to induce them to come to an end the behavior than if they had been content consistently in lieu of the same behavior.

So even though nearly everyone of your e-mail can not ensue urgent or else even attention-grabbing, each at present and therefore near is something you really accomplish hunger to know in the region of while you’re on vacation — perhaps even truthful company gossip. It’s unbreakable to come to an end by hand from inspection in lieu of folks messages for the reason that they fall through on a random basis, Uzzi says.

Ephren Taylor, 27, first in command of City first city Corporation, is besides intimately familiar with the snag of unwinding on vacation. A self-described “bonafide ‘crackberry’ addict,” Taylor found himself with a phone invoice of in the region of $900 in the manner of upcoming back from Barbados with his wife in lieu of their anniversary in the sphere of February. (Taylor is besides the youngest African-American first in command of a publicly traded company — watch an interview)

“It doesn’t affair if you’re fast asleep or else whatever, you’ll wake up and you’ll go to see with the aim of red light, and you’ll look by the side of it,” Taylor says of his BlackBerry. “It doesn’t affair if you’re having a romantic ceremonial dinner on the beach or else whatever it is. It can ensue a vacation-ruiner real quick.”

But anxieties with the aim of relations like Daly and Taylor experience don’t mean with the aim of all exchange of ideas policy ought to ensue gone by the side of land of your birth, or else even with the aim of you shouldn’t increasingly check e-mail on a phone, experts say.
Capture on tape: Texting father: “I was on autopilot”
Quick take part in an election: Accomplish you check your labor e-mail or else voice mail on vacation?
In no way: 40%
From time to time: 28%
Of course: 24%
I rarely take a vacation: 7%
Source: CNN.Com market research of 15,215 readers (not a systematic poll)

Single solution is to permit to a precise time group aside to check e-mail. In lieu of exemplar, a the minority minutes in the manner of have lunch, an hour ahead of ceremonial dinner, and a partly hour ahead of bedtime, Uzzi says.

Taylor — who admits to having snuck banned of bed to check his phone late-night by the side of night — has in point of fact passed on to the same degree far to the same degree to pick vacation destinations someplace cell phone data service might not labor to the same degree well. Single location in the sphere of the Dominican nation, in lieu of exemplar, gave him the narrow coverage he desired.

But Taylor says shutting inedible the BlackBerry altogether or else leaving it by the side of land of your birth still isn’t a finished solution. The leading unplugged vacation era is basically “withdrawal” to the same degree you wonder what’s up for grabs on with the aim of you don’t know in the region of, he says.

It’s of great magnitude to not feel like you boast to ensue “on vacation” the instant you bunch up by the side of the company on the survive era ahead of a slip, says Muller of the Montefiore therapeutic core.

“Ease things down in the sphere of with the aim of survive hour ahead of you leave so with the aim of there’s particular feeling of a transition — we struggle affecting from ‘busy-busy’ alert into this brainstorm of relaxing.”

If you’re snatched somewhere, assign by hand a trifling generation in the manner of you come to an end working ahead of you leave in lieu of the airport, she says. The unwinding generation can help coins your focus and way of behaving.

Muller besides recommends a modus operandi called mindfulness: Being in the sphere of the exhibit instant by the side of all time and not hire the mind wander too far upfront or else back. It helps relations relax and get pleasure from their vacations, she says.

An extra strategy is to try something special, such to the same degree a sport you’ve in no way tried ahead of, to stimulate and focus your mind, she says.

But what did you say? In the region of the stress of habitual land of your birth?

In a slip, distractions help you disregard in the region of labor reservations until the era you return — and induce the thousand messages you missed, Taylor says.

“All of the recreation you got from the vacation goes banned the exit in the sphere of in the region of two hours.”

This panic of the return can ensue lessened by taking trouble-free steps preliminary the night ahead of you leave back to labor, Muller says. Ahead of up for grabs to nap, take particular “worry time” to mark down everything you’re troubled in the region of. Many relations unearth with the aim of this enables them to feel better in the region of folks anxieties, she says.

As soon as you return to labor, try not to schedule no matter which inside the leading hour or else two back — sit down with your favorite morning beverage, position on particular melody, and leave through your e-mail single message by the side of a generation. Don’t discomfort in the region of how many e-mails can ensue waiting in lieu of you.

Taylor already knows with the aim of wherever he goes on vacation with his household in the sphere of grand, his BlackBerry yearn for stay by the side of land of your birth. He and his wife agreed he yearn for remove the SIM tag from his BlackBerry and position it into a regular cell phone so with the aim of he can’t induce e-mail.

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Fuel cell vehicles boost low-carbon Expo

08 Jun

Perhaps you remember the 2008 Olympics in Beijing as “green Olympics” new energy vehicles, their environment, low carbon emissions for the people left a deep impression. Two years later, in 2010 Shanghai World Expo conference, keywords become low carbon and environmental protection. Shanghai World Expo period, there were 196 fuel cell vehicles to travel outside the Expo site, so people can feel a new energy to us. hp pavilion dv9000 battery  

The use of hydrogen as an energy source, which is the fuel cell cars, “green” source. fuel cell vehicle based on the production of fuel cell power as main energy source, for motor vehicles. Principles of electricity generation fuel cell, Tongji University Dean Professor Yu Zhuoping car, said: “The fuel cell vehicles are in fact pure electric vehicles because it carries the power is given by engine, but the energy (used) is different. Electrochemical reaction of water electrolysis, water by the power of water molecules can be hydrogen and oxygen separate, is the electrolysis of water, this process is actually reversible. In turn, hydrogen and oxygen in a reaction generated the water, but it can also generate electricity, fuel cells, is the use of such a principle to work. ” ibm 02k6620 ibm 02k6651

Fuel cell cars are the development of solving the energy problem, the best response to climate change program, which is the ultimate automotive industry for sustainable development department. Tongji University Dean Professor Yu Zhuoping car, said: “Fuel Cells (car), the biggest benefits of zero emissions, water wells, the cleanest emissions. The second advantage of it, say it is more efficient than current gasoline Yehao, diesel Ye Hao, doubling its efficiency is very high, it is energy saving. Another advantage is that electric vehicles can not compare, (it is), you can quickly add the word energy, three minutes to fill a jar of hydrogen, (then) this car can run 500 km. ”

Speaking of green energy should be promoted this reason, Tongji Hydrogen Technology Research Institute, said Ma Jian, because the source of hydrogen is very broad. Ma Jianxin, said: “(hydrogen), which may come from natural gas, hydrogen production by coal, with a number of solid waste (for example) of methane to hydrogen can also be a byproduct of the chemical hydrogen to hydrogen, but more directly in the future that take hydrogen from water inside, and produces fuel cell that generates water, so that the circular cycle is very clean front and back of the water in the water.” dell tk330 dell w953g

Shanghai Electric Vehicle Powertrain Co., fuel, general manager Zhang Tong said that so far, the technology of fuel cell vehicles has advanced to the fourth generation, both in terms of safety or other performance indicators reached international advanced level. These performance indicators should enable people to conduct tests of the Expo.

Tong Zhang said: “We will make this car to the Expo is not our goal to go to their own assessment, is not scientific research, but to let the people go to assessment in accordance with actual conditions of the examination, evaluation of this car was not (off), no place is technically in place. ” sony vgp-bps9 battery

Well, the fuel cell vehicles to 10 million outside the laboratory to the family how much longer? Hydrogen Energy Technology Research Institute of Tongji University, Ma Jianxin, said that currently, the popularization of fuel cell vehicles many problems to be solved and these problems can be solved not by technology. Hydrogen Energy Technology Research Institute of Tongji University, Ma Jianxin, said: “The biggest problem is the standards, regulations obviously late, because these things (referring to transport of hydrogen storage) are operating at high pressure, it requires high pressure vessels, high pressure filling, high pressure transportation, needs safety containers must work within the process safety requirements, needs a regulatory level and technology. before those of us who are not, they are something new. Establish a set of criteria to all the regulations put in place, take the time and link the different functions. ” sony vaio vgn-fz180e battery vgp-bpl8
 

Motor vehicles are the invention of the West in the past, some of the core technology lies in the hands of a few large Western companies, but the development of new energy vehicles in the automotive industry in China can be a rare opportunity to go beyond the West. Tongji University Dean Professor Yu Zhuoping car, said: “For China, the fuel cell vehicle (development) there may be some way to go, but the hopes of our country, that the auto industry our country will likely use pure electric vehicles and fuel cell vehicles Dafanshenzhang. Why? Now inside the traditional internal combustion engine, must say that most of our technology in internal combustion engine, or the introduction technology. (We hope) a central element of the car is the energy source may be a radical change.

 
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Choosing the right battery for portable computing

30 May

Laptops are known to be tough hosts on their batteries. The host demands a stream of uninterrupted power but offers a poor working environment in return. As a result, the battery cannot provide the promised runtime and the service cuts short, often with little notice. In this paper we address the unhappy marriage between the host and battery(dell Vostro 1310 battery ), and examine what causes a battery to deteriorate faster than in other portable devices.

What’s the best battery for laptops?

Batteries for laptops have a unique challenge – they must be small and lightweight. In fact, the laptop battery should be invisible to the user and deliver enough power to endure a five-hour flight from Toronto to Vancouver. In reality, a typical laptop battery provides only about 90 minutes of service. Many users complain of much shorter runtimes.

Computer manufacturers are hesitant to add a larger battery(sony vgn-fz4000 battery) because of increased size and weight. A recent survey indicated that, given the option of larger size and more weight for longer runtimes, most users would settle for what is being offered today. For better or worse, we have learned to accept the short runtime of a laptop.

The energy density of modern batteries improves by about 10% per year. However, the benefit of better battery(apple a1175) performance is eaten up by higher power requirements of laptops. This results in the same runtime but more powerful laptops.
During the last few years, batteries have improved in terms of energy density. But any benefit in better battery performance is being eaten up by the higher power requirements of the laptops. This trend is continuing and the net effect will be the same runtimes but more powerful laptops.

Most laptops are powered by lithium-ion. This chemistry has a high energy density and is lightweight. There is no immediate breakthrough on the horizon of a miracle battery that would provide more power than the current electro-chemical battery.

Fuel cells, when available, will offer a continued stream of power by allowing the exchange of fuel cartridges when empty. Unfortunately, commercial fuel cells for laptops and other portable devices are still several years away. Power handling, size and cost remain the biggest hurdles. The early fuel cells will function more like a portable charger than a battery (vgp-bpl8 ) replacement. The fuel cells currently in use have the difficulty in providing spontaneous high power on demand.

The runtime of a laptop battery is based on the activity of the computer. The basic housekeeping, which the computer needs to stay alive, draws less power than, for example, reading, writing, computations and searching for files. Manufacturers prefer using idle time when specifying runtime.

A battery in a laptop ages more quickly than in other applications because of heat. During use, the inside temperature of a laptop rises to 45°C (113°F). The combination of high temperature and full state-of-charge promotes cell oxidation, a condition that cannot be reversedonce present. The battery’s life expectancy when operating at high temperature is half compared to running at a more moderate 20°C (68°F) or lower. Leaving the laptop in a parked car under the hot sun will also aggravate the situation. All batteries suffer permanent capacity loss as part of elevated temperatures but lithium-ion is affected more than other batteries.

Some Japanese computer manufacturers have introduced a number of sub-notebooks in which the battery(hp pavilion dv9000 battery ) is mounted externally, forming part of the housing. This design improves battery life because the battery is kept at room temperature. Some models carry several different battery sizes to accommodate a range of user demands.

Lithium-ion is well suited for laptop users who continually switch from fixed power to battery use. This user pattern is typical for those in the sales, service and medical field. Here is the reason why:

With nickel-based batteries, the charger applies a full charge each time the portable device is connected to fixed power. The battery is put on charge until a signal is received indicating that the battery is full. This signal is in form of a voltage change or rising temperature. Because of the sluggish response, permanent capacity loss occurs caused by overcharge and elevated temperature. Lithium-ion only receives charge if the voltage is low.

How to calibrate the battery

Most laptop batteries are ’smart’; meaning that they know how much energy is left. Such a feature has definite benefits but the readings are often inaccurate. A laptop may indicate 30 minutes of remaining runtime when suddenly the screen goes dark. Here is the reason why:

With use and time, a tracking error occurs between the chemical battery(sony vgp-bps9 battery) and the digital sensing circuit. The most ideal use of the ’smart’ battery, as far as fuel-gauge accuracy is concerned, is a full charge followed by a full discharge at a constant current. In such a case, the tracking error would be less than 1% per cycle. In real life, however, a battery(Dell Inspiron 6400 Battery) may be discharged for only a few minutes and the load may vary widely. Long storage also contributes to errors because the circuit cannot accurately compensate for self-discharge. Eventually, the true capacity of the battery no longer synchronizes with the fuel gauge and a full charge and deliberate full discharge will be needed to ‘re-learn’ or calibrate the battery(Dell XPS M1210 Battery).

There are no standards to tell what constitutes a fully charged and fully discharged battery. Lithium-ion packs are considered fully charged when the limiting voltage (4.20V/cell) is reached and the saturation current has decreased to 3% of the nominal value (50mA on a 1700mAh cell). Some chargers use 5% and 8% as ‘ready’ criteria.) A full discharge occurs when the cell reaches 3V/cell or lower. At this voltage level, the battery(dell latitude d830 battery) has a remaining capacity of 3 to 10%. Modern batteries adjust to a lower cut-off voltage on high load currents and include temperature compensation.

To calibrate a battery, a full charge and discharge is necessary. One without the other does not constitute a calibration. A problem arises if the battery is recharged after a brief use without providing the opportunity of a full discharge. A forced discharge to “Low Battery” may be needed from time to time.

What happens if no battery(vgn-fz4000 battery) calibration is done? Can such a battery be used in confidence? Most ’smart’ battery chargers obey the dictates of the chemical cells rather than that of the electronic circuit. In this case, the battery will fully charge regardless of the fuel gauge setting and function normally but the digital readout will become increasingly more inaccurate. If not corrected, the fuel gauge simply becomes a nuisance. Cadex Electronics manufactures ’smart’ chargers and battery(Dell Latitude D820 Battery) analyzers that are capable of calibrating a ’smart’ battery.

 
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Prolonging life in multiple cells through cell balancing

19 Apr

Analog front ends that balance cells and eliminate mismatches of cells in series or parallel combination significantly improve battery (Sony vgn-fz battery ) efficiency and increase the overall pack capacity. As the number of cells and load currents increase, the potential for mismatch also increases. There are two kinds of mismatch in the pack: State-of-Charge (SOC) and capacity/energy (C/E) mismatch. Though the SOC mismatch is more common, each problem limits the pack capacity (mAh) to the capacity of the weakest cell.

Cell balancing principle

Battery pack cells are balanced when all the cells in the battery (Sony VGP-BPS9 battery ) pack meet two conditions:

  1. If all cells have the same capacity, then they are balanced when they have the same State of Charge (SOC.) In this case, the Open Circuit Voltage (OCV) is a good measure of the SOC. If, in an out of balance pack, all cells can be differentially charged to full capacity (balanced), then they will subsequently cycle normally without any additional adjustments. This is mostly a one shot fix.
  2. If the cells have different capacities, they are also considered balanced when the SOC is the same. But, since SOC is a relative measure, the absolute amount of capacity for each cell is different. To keep the cells with different capacities at the same SOC, cell balancing must provide differential amounts of current to cells in the series string during both charge and discharge on every cycle ( Sony VGP-BPS8 battery ).
Cell balancing electronics

Cell balancing is defined as the application of differential currents to individual cells (or combinations of cells) in a series string. Normally, of course, cells in a series string receive identical currents. A battery pack requires additional components and circuitry to achieve cell balancing. However, the use of a fully integrated analog front end for cell balancing reduces the required external components to just balancing resistors (Sony VGP-BPS5 battery ).

It is important to recognize that the cell mismatch results more from limitations in process control and inspection than from variations inherent in the Lithium Ion chemistry. The use of a fully integrated analog front end for cell balancing can improve the performance of series connected Li-ion Cells by addressing both SOC and C/E issues.[68] SOC mismatch can be remedied by balancing the cell during an initial conditioning period and subsequently only during the charge phase. C/E mismatch remedies are more difficult to implement and harder to measure and require balancing during both charge and discharge periods (SONY Vaio VGN-FZ battery).

This type of solution eliminates the quantity of external components, as for discrete capacitors, diodes and most other resistors to achieve balance.

Hazards

Explosion

A battery explosion is caused by the misuse or malfunction of a battery (Dell Inspiron 6400 battery), such as attempting to recharge a primary (non-rechargeable) battery,[69] or short circuiting a battery.[70] With car batteries, explosions are most likely to occur when a short circuit generates very large currents. In addition, car batteries liberate hydrogen when they are overcharged (because of electrolysis of the water in the electrolyte). Normally the amount of overcharging is very small, as is the amount of explosive gas developed, and the gas dissipates quickly. However, when “jumping” a car battery, the high current can cause the rapid release of large volumes of hydrogen, which can be ignited by a nearby spark (for example, when removing the jumper cables).

When a battery is recharged at an excessive rate, an explosive gas mixture of hydrogen and oxygen may be produced faster than it can escape from within the walls of the battery ( Inspiron 6400 battery), leading to pressure build-up and the possibility of the battery case bursting. In extreme cases, the battery acid may spray violently from the casing of the battery and cause injury. Overcharging—that is, attempting to charge a battery beyond its electrical capacity—can also lead to a battery explosion, leakage, or irreversible damage to the battery. It may also cause damage to the charger or device in which the overcharged battery is later used. Additionally, disposing of a battery in fire may cause an explosion as steam builds up within the sealed case of the battery

 
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Button battery news

19 Jan

Recently, the reporter interviews sony vgp-bps8 battery in Nanjing Children’s Hospital found that children in summer caused by foreign bodies in nasal congestion, ear congestion, the number of children with respiratory tract blockage of the past week reached a new peak, in the ENT out-patient office every day was found a few distress due to foreign bodies in children to come for medical treatment.

The text of literary talent who lives in rural areas in Anhui last year, two days ago, a small cousin came to Wenwen guest house, two small partners, after that meeting, from whose nostrils as big race to see who can one button battery stuffed nose, Wen Wen pick up the battery just get into the go. Into easy to come out hard, Wen Wen nose figure out how to button batteries not come out, and anxious two children Wa Wade cry sony vgp-bps9 battery, and parents rushed out of the rush to send their children to the local hospital. Doctors advised parents to a larger hospital, then came to the Nanjing Wenwen a Children’s Hospital.

Dong Li An Zhuren ENT hospital said that due to button battery cylindrical shape, relatively smooth surface, attached to the nasal cavity of the difficulties are removed, so more difficult to remove. After some twists and turns, the Dong Zhuren just holding the button with the vascular clamp removed the battery to the WEN parents said that fortunately, when you have time, if there is bleeding, streaming yellow pus nose and other more serious situations dell m1530 battery, but also for further treatment.

Now during the summer holidays, children being left alone most prone to accidents. Dongzhu Ren said that the recent ENT outpatient admissions every day, a few foreign body within the nasal cavity and ear canal of small patients out something more diverse, with feathers, rolls, soybeans, small stones and so on. Need to be reminded that, in patients with nasal foreign bodies not to clamp the clip to take home on their own, especially the sleek foreign body, folders can take improper nasal foreign body into the rear detachment and lead to incorrect inhalation risk of larynx or trachea.

Fujian Nanan 25 megawatt solar cell experiment base project to start with vgp-bps8 battery

August 9, Gross capital formation 2 billion in three refined crystal silicon materials Co., Ltd. 25 MW solar cell experiment base project, officially arrived in Quanzhou, Fujian Province (Nam) Optoelectronic Information Industry Base. During the year of the project outputs of single-crystal products, in 2008 all production will become the most complete industrial chain of 25 megawatts of photovoltaic cells.

A total of seven items on the 9th settled in Quanzhou (Nan An) optoelectronic information industry base, with a total investment amounting to 1.1 billion yuan of which a total investment of 500 million yuan of the high-tech enterprise incubators, Fujian Light Technology Co., Ltd. and Beijing and build a spring R & D center for semiconductor photo projects.

Toshiba recalls another 1400 or a Sony battery overheating NB VGP-BPS9 battery

U.S. Consumer Product Safety Commission (CPSC) today jointly announced a joint Toshiba recall 1400 potential fire risk of Toshiba laptop batteries.

It is reported that these lithium-ion batteries by Sony Energy Devices (Sony Energy Devices) production, mainly used for dell inspiron 6400 battery, dell inspiron e1505 battery

These defective battery is -4 in January 2006 the month of sales to the U.S. market, as the Canadian market is affected, is still unclear.

To date, Toshiba has received three up from outside the United States market, the report of batteries overheating, but no injuries were reported.

In this regard, Toshiba, warned users in receipt of free replacement toshiba pa3465u-1brs battery as possible before the use of AC power. Last month, Toshiba has just announced in Japan and overseas recall 10000 laptop batteries manufactured by Sony.

 
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replacement sony vgp-bps9 laptop battery

25 Dec

Sony VGP-BPS9 battery is a high quality rechargeable replacement laptop battery which can 100% compatible with the OEM battery which Only the highest quality cells are used in our laptop batteries , we will offer the Fastest Delivery, 30 Days Money Back,one Year Extended Warranty for you,you can Email Us if you have some question about our products.

* Capacity: 5200mAh

* Voltage : 11.1V

* Cells: 6 Cell

* Color: Silver

* Battery Type: Lithium ion

* Full 1 year warranty

* Compatible Part Numbers:SONY VGP-BPS9, VGP-BPL9, VGP-BPS9A/B, VGP-BPS9/B, VGP-BPS9/S

Sony battery VGP-BPS9 Tips

Does “limited charge cycles” have you worrying about replacing batteries often? Lithium Ion batteries have anywhere from 300-600 charge cycles which is 2-4 years of use for the average user.

To get maximum use out of your lithium ion vgp-bps9 battery there are a few things to keep in mind.

* Make sure the power saving features are enabled when using the laptop on battery power. These features may be disabled manually for many laptops if you absolutely need the maximum speed setting for a task, don’t forget to turn power saving back on.

* If you are not going to use the Sony VGP-BPS9 battery pack for a long period of time then try to store it in a cool dry place at about a 40% charge level. Do not freeze!

* When using the battery, try to charge it as often as possible as soon as you can.

* Don’t forget your battery in your vehicle on a hot summer day.

You should consider buying a spare pack only if you find yourself running out of battery power often, don’t buy one to have “just in case”. Lithium Ion packs start to age as soon as they’re produced and can irreversibly lose around 20% capacity per year even when unused. (note storage tip above to minimize this)

Caution:

Don’t charge and discharge the Sony VGP-BPS9 battery removing from the computer。

Attention:

1. Recharge the Sony VGP-BPS9 battery as the circle more than once per month to make the management of capacity reach its best status,and prolong Sony VGP-BPS9 battery useful life。

2. Remove the Sony VGP-BPS9 battery when don’t use if for long time,or the currency will be lost and the cell will be damaged。

3. If the capacity is low in current,CPU will be in electricity-saving model and Sony VGP-BPS9 battery can not be charged.In this case,take off the Sony VGP-BPS9 battery and fit on to rouse the CPU.The battery can be charged then。

 
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Repair battery step one : calibrate your cell

25 Nov

First of all, the test voltage to zero, the machine can not start naturally, can not use power when charging (the battery light does not shine).

Disassemble the sony vgp-bps8 battery, more or less talk about the situation inside the battery.

Battery in a total of 9 can be placed 18 millimeters in diameter, length 65 mm core CGH18650 models the location of lithium vgp-bps8 batteries, Panasonic’s 22 batteries in parallel, three groups of series (OK, then my new vgp-bps8 battery, the same), there is a very fine control with a single chip – the protection of the circuit, the circuit to the computer a total of five output contacts, respectively, are negative, the clock and data.

First of all, check the sticky in the battery temperature detection probe (temperature resistance), and temperature protection insurance, are also normal. Test-retest the battery voltage of each group, in which two sets of battery voltage of 3.8V, normal; a battery voltage of 0V, appear to have lapsed. The total battery voltage of 7.6V, then the failure of the battery pack has not yet open, then measuring the internal resistance was very small, almost in a state short-circuit.

First of all, failure to deal with sony vgp-bps8 batteries, battery repair based on previous experience, the failure of the battery may not be completely damaged, can be activated through a number of methods, in particular the performance of state for the short-circuit the battery. The voltage of the battery to 0 with one end connected to the circuit board off line to avoid damage to circuit boards in operation. Open-circuit battery voltage after the re-survey, is still 0V, ruled out the possibility of short-circuit boards.

For short-circuit the battery failure, the method is more effective high-voltage electric current moment method, using the old SONY power supply (my back-up power), 16V maximum 3A output string on the multimeter (a tributary of the current file 20A), first negative power supply Even with the bps8 battery anode, and cathode power multimeter then red table pen, table pen with black multimeter battery cathode touch, speed, faster as far as possible, the former two degrees to see the multimeter has reached close to the 2A (moment) and the third on only 0.4 A about an immediate stop, measure the battery voltage has been restored to about 3V, the internal battery short-circuit that point has been an instant high-current boil (If you do not damage the battery to stop immediately, even if so, battery life and capacity have been the impact, if conditional, or recommend replacement, but if the replacement, then try to replace the entire battery pack are). However, the batteries need to be a separate charge (if the battery charge of the whole group, this will result in the other two groups had mesenchymal cells), plug in the charger to start charging ammeter to monitor during the charge current to 500mA or so, current for the 3.6AH battery pack is small, but the charger is the charge current is limited and a small current to the dell xps m1530 battery charge is good for the resumption. After about six hours, the charger showed the battery is already full, continue to re-charge for about two hours, remove the battery, measure voltage has reached 4.2V, with bright halogen bulb in the flashlight (3V, 500mA) to discharge its , bulb sharp discharge current of 700mA, the sony vgp-bps8 battery pack that has been basically restored, continue to discharge until the battery voltage down to 3.8V, the purpose of the two groups with the same battery voltage, charging time together so as not to overcharge the Back to the whole battery pack battery circuit welding.

Since the dell xps m1730 battery voltage while the circuit board there is no output, then, surely have damaged circuit boards, after observation, negative input circuit board (take battery) output (then output contact) is directly connected, and the positive input and output of by a high-power thyristor control, the thyristor remains cut-off state, that is, the control circuit has not been output control signals to the SCR control terminal, or simply the SCR has been destroyed. (Measured after the control signals that I did not) because I do not have the ability to repair single-chip microcomputer. IBM to take into account the protection of the BB more perfect, is about to run out of battery power will automatically shut down when, this battery is intended to be used for entertainment, therefore, need not be too concerned about, so I decided to shake the hp battery protection circuit, directly depend on BB’s protection circuit. SCR is in the input and output pin (that is, cathode circuit board input and output pin) between the solder on a small 2A fuse, fuse 2A select the reason is based on current usage, the largest in the computer power consumption , the current does not exceed 1.9A, 2A capacity sufficient unusual circumstances (for example, short-circuit accident) but also to ensure that the fuse of the time, but also play a role in protection.

In fact, directly to the SCR control terminal so that it can also be a high turn-on, but taking into account the current the battery must be a reason to burn, and the reasons for the identification of protective measures taken before or better in order to avoid greater loss.

Well, the battery power has been the first non-stick, and on the machine to try it! Normal boot, plug in the power immediately after the charge on the flashing lights are up, the way when charging the battery with a random look at battery information management software, was also displayed, the sony vgp-bps9 battery circuit board This shows that the single chip is still working.

Batteries is a Panasonic, the time the factory in June 2000, the first time in October 2000, the design capacity of 38.88Wh, the current capacity 38.88Wh, is charging cycle: 0 times.

Oh, do not know how to engage in, the inspiron 1300 battery may be burned when burning confused, even cycles to the zero, Now it maybe a new battery.ing will be all right.

 
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General Electric R & D and procurement to enhance co-operation with the Guangdong

23 Nov

November 19 news: the world’s largest diversified company General Electric, Sony VGP-BPS8 battery ,Sony VGP-BPS9 battery announced here on the 18th a series of new initiatives to expand operations in Guangdong, including the co-operation with local research institutions to develop new energy technologies, to establish its first regional level in China, procurement center and set up headquarters in southern China. Stoyanov, executive vice governor of Guangdong Province, General Electric Company Vice Chairman John Rice, attended the launching ceremony of cooperation projects.

At the ceremony, the General Electric R & D center in China with Guangzhou Institute of Energy signed a memorandum of understanding and cooperation, the two sides will jointly promote a new generation of thin-film solar cell technology research and application, and strive to promote innovation in solar cell technology, SONY VGP-BPS9A/B , SONY VGP-BPL8 , BPS10  industrial upgrading in Guangdong Province.

At the same time, General Electric, Guangdong-based Center for Asia-Pacific region was also officially inaugurated appliance purchases. The establishment of this center marks the company will further expand the scale of procurement in Guangdong, and the assistance of the local government to strengthen and supplier of the Pearl River Delta cooperation, give full play to its advantages of market channels, while local enterprises to upgrade technological capabilities,  VGP-BPS9 battery , VGP-BPS8 battery improve production quality and safety to ensure the working environment in line with health and environmental standards.

To tie in with the neighboring provinces of Guangdong, as well as growing the business, General Electric, today also announced the establishment of regional headquarters in southern China, with a view to more effectively integrate its business groups in the region’s development.

General Electric Company Vice Chairman John Rice said he hopes the formation of complementary advantages with the Guangdong’s economy and win-win situation, and actively participate in Guangdong Province, to the science, technology, services,  Sony VGP-BPS9/B battery and environment-friendly industrial model of the transformation, and further expand cooperation with local governments and enterprises in the energy, water processing, medical, lighting and other industries co-operation and development.

It is reported that the General Electric of the affiliated Chinese Academy of Sciences Guangzhou Institute of Energy will focus on cooperation between the thin-film solar cell technology development and applications. This technology will provide the solar energy industry in the current popular with polysilicon panels based battery technology, to provide a lower cost, more efficient next generation of battery solutions.

According to the data show that GE procurement contracts in Guangdong last year, amounting to 770 million U.S. dollars, accounting for the company’s one-fifth of China’s total purchases, which were the company’s home appliance sector procurement volume has accounted for more than half .

 
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