2009年2月26日星期四

UPS battery selection and maintenance

Engineering staff usually cheaper small-capacity battery to achieve the many groups of parallel UPS require larger battery capacity, if the poor performance of homogeneous groups of batteries in parallel, the performance of poor, low-voltage battery pack would be best battery performance Group collapse, causing the entire UPS battery system failure in advance. At present, primarily on the basis of homogeneity properties of the battery voltage to measure the homogeneity, has a variety of domestic standards, such as the Ministry of Information Industry, YD / T 799 - 1996 standard requirements for: 25 ℃, when the entire group 2V battery cell float voltage difference is not more than ± 50mV, the open circuit voltage difference of not more than ± 20mV; the Ministry of Electric Power DL/T637--1997 standard requirements are: 25 ℃, the battery system such as 2V / Festival batteries, the highest open-circuit voltage with a minimum of a difference was not more than 30mV, 6V / batteries no more than 40mV, 12V / batteries no more than 60mV. General the number of batteries in parallel group should not be more than four groups, in order to prevent the entire battery system failure in advance, the choice of batteries should be uniformity in the performance aspects of the request. When they are confident that after the battery model, in a UPS system manufacturers with the best requirements of the same batches of battery products, to reduce the performance differences. Similarly, different brands or different battery, because there is a big difference in performance, it is recommended not to mix.

Finally, it is necessary to point out in particular that even if the selection of appropriate VRLA, are also required to carry out the necessary day-to-day maintenance and management, to avoid premature battery failure. UPS acer laptop battery Maintenance With the continuous development of science and technology, UPS performance getting better and better MTBF getting longer and longer working hours, increasing the reliability of machine.

UPS acer btp-43d1 do a good job in the maintenance of consumables has become particularly important.

The beginning of a new rechargeable battery The new travelmate 220 battery is installed after the general to carry out a longer period of time rechargeable battery, charging power supply in accordance with the instructions of the provisions of charging, the battery pack to be recharged after a discharge, discharge after charging, the purpose is to extend battery life activity and improve the battery charge-discharge characteristics.

Periodic charge-discharge UPS's internal acer btp-58a1 power long-term idle or do not have batteries in the long-term floating state without discharge, would result in a large number of batteries to the battery lead sulfate adsorption of the cathode surface, forming the so-called battery cathode plate "sulfate" and because of lead sulphate is an insulator, and its formation is bound to have a battery charge and discharge very bad because, on the formation of sulfate cathode board the more the greater the internal resistance of batteries, battery charge-discharge performance can be more poor, resulting in the battery of "aging", "activity" down, so that greatly shorten battery life. Should be once every 3 ~ 4 months, man-made through the interruption of electricity or by the city of software / hardware control methods will be UPS's rectifier / charger placed closed to allow discharge of batteries in UPS. Such as "activate" the battery and the battery discharge operation, it is to control the discharge time in the normal discharge time of 1 / 3 ~ 1 / 4 better.

Depth of discharge is prohibited Sealed maintenance-free battery and battery life is closely related to depth of discharge. Depth of discharge refers to the user in the process of using ace btp-63d1, battery out of an number of hours accounted for its nominal capacity when the percentage of security. Depth of discharge will cause the internal battery electrode surface sulfate, resulting in increased internal resistance of batteries, serious individual cells will appear "anti-pole" phenomenon and permanent damage to the battery.

Battery depth of discharge serious impact on battery life, non-compelling, do not let the battery discharge state in depth. Avoid over-current charge Easy to over-current caused by charging the internal acer batcl50l of positive and negative plate bending, so that the surface of electrode active material shedding, resulting in decreased battery capacity available, the battery can cause serious internal damage to short-circuit plate.

Avoid over-voltage battery charger Over-voltage rechargeable travelmate 290 battery tend to cause electrolyte to be contained in the electrolytic separation of water into hydrogen and oxygen and escape, thus shortening battery life.

Replacement activity, the battery internal resistance is too large (1), with UPS power to extend the use of time, there will always be part of the charge-discharge characteristics of batteries will gradually deteriorate, terminal voltage decreased, the performance of the travelmate 4000 battery can no longer rely on UPS power supply to the internal charging circuit resolved, continue to use will be hidden dangers exist, should be promptly replaced.

(2), the battery internal resistance increases, with the normal charge voltage of the rechargeable travelmate 2300 battery have not recharged the battery to restore its properties should be the timely replacement of batteries. Battery internal resistance is normally 10 ~ 30mΩ, such as more than 200mΩ internal resistance of batteries, the UPS will not be enough to maintain the normal operation of the internal resistance of large batteries must be replaced.

To avoid the old and new batteries or mix old and new aspire 1680 battery mixed charge New battery because of the resistance are relatively small, and old batteries have varying degrees of resistance increases, when mixed with old and new batteries recharge when the battery internal resistance because of the old large, pressure will be relatively large, readily phenomenon caused by over-voltage charging; and new batteries, the internal resistance of the small charge voltage currents too small but also easily lead to over-current phenomenon, so in the charge-discharge process should be avoided mix old and new aspire 1410 battery.

Battery use of environmental Battery life with the ambient temperature is closely related to the battery at a low temperature, the battery in the powder of zinc plate easily, loss of storage performance, resulting in permanent damage. Temperature is too high, the battery capacity will decline, would cause serious permanent damage. According to the battery manufacturer's technical specifications, the best use of the battery temperature is 20 ~ 25 ℃, in the temperature range used to extend acer lcbtp03003 ,acer aspire 1300 life.

How to distinguish the authenticity of Samsung E568 battery

First look at the battery label. If the battery since the font tag printing edges, uneven color, font sizes, printing fuzzy, and this is a fake battery.

Secondly, compared to those who pay attention to "production processes" and inferior apple laptop battery ,apple a1012 , apple m8511 depends on its size, and place it inside the cell phone, because the cost of the problem, counterfeit batteries shell mold and the original must have more or less the difference between Add imitation battery battery pack mobile phone will appear back inside the closed difficulties, or the battery in the battery pack inside, some loose.

Finally, it is necessary to look at the metal apple a1079 , apple a1078 contacts. Metal contacts with original equipment batteries using high quality copper, and only look at the positive will have the golden glare, from the other point of view is more bleak. In contrast, those inferior battery metal contacts because of the materials used in general, so how are shiny look.

2009年2月23日星期一

Details: How to determine the remaining capacity of the battery cell phone?

First of all the provisions of the definition of battery capacity: a fully charged battery in accordance with the provisions of the constant current discharge, when the discharge voltage to the provisions of the time spent in current received by the capacity of the battery.

For instance, a lithium sony laptop battery from full charge (4.2V) in order to discharge to 2.75V at 600mA spent 65 minutes, the battery capacity of 600mA * (65/60) h = 650mAh.

A battery discharge when the presario nx9000 battery voltage as the battery drain gradually decline.

This can be a relatively simple and effective relationship is the voltage on the capacity. Received a hp f2299a of normal use (such as 50mA discharge) discharge curve, the time for sub-4 in order to limit the voltage of 4.2V rechargeable lithium battery for example, can be listed in such a relationship

4.20V---- 100%

3.95V---- 75%

3.85V---- 50%

3.73V---- 25%

3.50V---- 5% (cell phone can not be completely used up because the hp f3172a power, are generally lower than 3.50V may automatically shut down when a) 2.75V---- 0%

In many cell phone hidden inside the menu, could be released engineering model to see the hp f2019 voltage, such as Samsung mobile phone series, Bird S1200 and S1000, such as mobile phone, both can see the battery voltage. Of course, because the relationship between the above cell types and different manufacturers vary, but similar can be used to refer to.

With such a correlation between the consumption display on the mobile phone is relatively simple, and single-chip sampling of a hp f2019a voltage value, such as voltage of 3.90V, on the display 3 grid (4 cells for the full grid), and so on.

If you want to show the cell phone hp f2019b,hp f2024a precise capacity, must always conduct discharge current computing points of time, this process is relatively complex, requiring dedicated chip to complete a battery with a chip (costs go up), and notebook power of lithium batteries on the have such a management chip to accurately access the capacity of the battery, SONY smart lithium batteries are Ericsson T28 mobile phone, such as lithium batteries has a similar chip, as far as I know, Texas Instruments BQ26231 can achieve this function, so their user interface on the percentage of battery capacity has shown that more comfortable. Otherwise we can only look rough electricity "grid" the.

Waveguide certain models (such as 936, S1200, 8288, including the previous old fighter 818,838) show the capacity of another somewhat unconventional, S1200 as an example in his capacity lattice defined as follows: 4.20V ~ 3.76V---- 4 Grid 3.76V ~ 3.72V---- 3 Grid 3.72V ~ 3.70V---- 2 Grid 3.70V ~ 3.60V---- 1 Grid 3.60V below ------ 0 grid, omnibook 6000 battery,hp f2024b alarm About 3.40V to shutdown Contrast the normal capacity of relations, it shows that when the remaining 3 cell is 3.76V, the actual hp f1739a,omnibook xe battery only about 30% of electricity consumption, and this may explain why the S1200 mobile phone (cell phone mentioned above is true )

The first cell can be used for a long time, and the next 3 grid instead of the end of one day.

Teach you how to identify genuine mobile phone battery

Genuine mobile phone batteries generally have the following exterior features:

1, battery labels using the second printing technology, in a certain light, from the slope, the bar code part of the color more than other parts of the black, and feels with his hands, feeling than the other parts of slightly convex, Motorola original hp laptop battery have this kinds of characteristics.

2, hp f4098a labels the surface of white Department is zoned light with metal, have similar across the pencil marks.

3, the battery casing using a special material, very strong, not easily damaged, the general should not open the hp f4809a cell means.

4, hp 367759-001 tidy appearance, no extra burr, the outer surface has a certain degree of roughness and feel comfortable, feel the inner surface smooth, light to see fine longitudinal scratches.

5, the hp VGP-BPS5 cell phone battery electrode and the width of the same chip, battery electrode below the corresponding position marked "+""-" marking film battery electrode materials and the isolation between the same shell material, but not integrated.

6, the hp f4812a into the mobile phone should be hand comfort, ease.

7, compaq 319411-001 lock-bit compression part of the appropriate card, firmly.

8, battery labels clear handwriting, and presario 2100 battery type has the corresponding pieces of its battery.

9, presario 2500 battery manufacturers should outline clear brightness and anti-counterfeit mark, and has appeared three-dimensional sense.

10, battery labels the edge of the fonts have "sawtooth" burr, and are particularly suited to identify Ericsson Series presario nx9010 battery.

2009年2月21日星期六

Battery longevity has unique

To remind consumers, in order to extend the service life of electric vehicles, in the use of electric vehicles battery in the former must be carefully read product instructions, and when in the use of attention to the following matters:
1, first of all excess traffic should not overloaded (for example, wear a cycle or carrying heavy objects, etc.), a moving display of electricity meters found insufficient, use of human cycling, because the depth of discharge of the fujitsu laptop battery life of the great loss.

2, paying attention to charging method. New battery in the first charge, the time must be long, it is necessary to ensure adequate electricity. For lead-acid batteries, whether near or far distance, use immediately after charging, with the release with the charge, not to completely run out of power before trying to charge, such as long-term non-use of cars, but also to guarantee a monthly supplement electricity. It will not only protect the fujitsu fpcbp80 , fujitsu fpcbp77, while extending its life.

3, try to avoid braking and frequent braking affect brake sensitivity, fujitsu fpcbp68 , fujitsu fpcbp63 capacity cost; speed not too fast, the faster the speed, the greater the wear and tear on the battery.

4, not in a static state of the direct use of the motor to start the car, it is best to use foot power to start simultaneously.

On the bridge, uphill, against the wind when traveling be sure to use pedal power in order to avoid fujitsu fpcbp95,Toshiba laptop battery damage caused by impact, the impact of cell line mileage and life continued.

Laptop battery tips: out repeatedly charge and discharge depth of the misunderstanding

The laptop is equipped with the original battery, after a period of time after use, there will inevitably be the case of standby time. Some users think: "depth with repeated charge-discharge method, be able to resume the performance of the battery, thereby extending the battery life", I believe that this relatively one-sided.

We must correctly understand the issue, may start using the laptop sony laptop battery types talking about. As we all know, in 1995, previously produced in the laptop, basically to use nickel-cadmium batteries to power. This battery, when used, if the charge-discharge mode is not correct, the battery will have a "memory effect", thereby reducing the battery's actual capacity, the elimination of this "memory effect" is the best way to repeatedly charge and discharge depth manner.

With the emergence of nickel-hydrogen batteries, battery capacity has been significantly improved, but the "memory effect" did not completely eliminate the disadvantage. In recent years, lithium-ion sony pcga-bp1n in the laptop has been rapidly increasing, largely because of lithium-ion batteries have been eliminated after the "memory effect" problem, it is used repeatedly to restore the depth of the battery charge and discharge performance of the method is not applied.

But why lithium-ion battery capacity or the will to reduce the problem? Generate the root causes of this situation, are used in laptop and the original lithium-ion battery in the built-in battery management systems. Battery Management: At present in the laptop, almost all adopted the "sony pcga-bp2nx management" and "charge-discharge control" of two chip-level management systems. The "battery management chip" placed in the internal laptop, the chip registers in memory of the computer used in lithium-ion battery capacity, temperature, ID serial number, charge-discharge state, the cumulative number of charge-discharge and other important information. Information in the use of these data, the need to constantly refresh the actual situation.

The battery built-in "charge-discharge control chip" the most important function, that is, surveillance, control of battery charge and discharge the entire process and be documented. Charge: Lithium-ion sony pcga-bp2r throughout the charging process is divided into "fast charge constant-current" and "Constant current charge decreasing" in two stages. The so-called "constant current fast charge" means just started charging, the charge current and charge voltage to follow a fixed battery terminal voltage gradually increased until they reach their nominal voltage of the charging method. When the battery terminal voltage has reached the standard value, the control chip will be automatically transferred to the "constant current charging regressive" stage, when the charging voltage will no longer continue to rise, while the charge current to follow the battery capacity is rising gradually diminishing, and eventually reach zero, so they completed the full battery charging process.

At the same time, in the charge generated by the process of charging voltage, current and time data curves will be recorded in the sony pcga-bp2s 's "charge-discharge control chip" of memory. "Battery management chip" is through access to these data, and calculated by sampling data such as battery capacity, it is our Battery Information in numerical Wh read.

Fixed: After repeated charging and discharging the sony pcga-bp2t,sony pcga-bp2v,sony vgp-bps8 after use, its built-chip charge-discharge data will of course be changed. If at this time "battery management chip" has not the opportunity to read newer, more complete data, it calculated the battery capacity of course will not be accurate to the user the feeling seems to be reducing the capacity of the battery, and the fact that on the actual battery capacity has not really reduced.

Some brands of laptop charging management software comes with the working principle, is in charge during refresh "charge-discharge control chip" memory of the data, thus ensuring the "battery management chips," the correctness of calculations. If you have a close look of the laptop using the instructions will be found to have "a month in the use of computer time, should make a full battery charge and discharge operation" note. Its main purpose is to use the depth of charge and discharge the way to amend the charge and discharge control chip register data in the curve, so that the battery charge control and sony pcga-bp71 ,sony vgp-bps3,sony vgp-bps5 nominal capacity and the actual situation, as a result the correct value of the battery capacity.

2009年2月11日星期三

Wuhan built scrap battery recycling network

January 14 Wuhan Xinhua recently in Wuhan City by more than 200 schools as a result of near 400,000 recycling of used batteries obtained 40,000 yuan reward.

This reporter has learned that the "make environmental protection, offer love," Activity of the donation is to explore the establishment of Wuhan City, the collection focus on the disposal of used batteries an attempt to reward the government of each section of the laptop battery 9 cents, 1 cents a recycling business for cash . According to introduction, for the realization of used batteries harmless treatment, the creation of separation and recovery mode, in Wuhan City to work as a convenient recycling service works to promote, UMPAP sector to the service by the management changes, to take the lead for the recovery enterprise to provide services in the city Guangjian recycling network.

Donations from last year since September, Wuhan has been in the supermarket, community, schools and units in the installation of recycling bins near 4000, basic coverage of Center City, the direct participation of government officials, members of the public and students more than 500 million passengers, recycling used batteries near 320 tons.dell 310-6321, dell 310-6322.

2009年2月10日星期二

Wuhan waste away from the hazardous waste recovery rate increased by five lead-acid batteries

Yesterday, in Wuchang, a vehicle for democracy line, more than 10 workers are to be scrapped lead-acid batteries onto trucks for delivery to designated locations deal with environmental protection departments.

One hawker For high recovery of these batteries, car dealers Road boss shook his head: "You Mo harm me, the Environmental Protection Agency found that the need to punish me." One years ago, the Wuhan City scrapped lead-acid acer laptop battery recovery rate of less than 20%, Today, that proportion has more than 70%, at the national level of a leading large and medium-sized cities.

Spent lead-acid acer lcbtp03003 are generated mainly from a variety of cars, electric bicycles and communication electronics equipment, has been included in National List of Hazardous Wastes. The past, due to the lack of a dedicated recycling, treatment sector, Wuhan City produces every year about 8000 tons of waste lead-acid batteries were mostly businessmen from other provinces to buy, some unscrupulous vendors will be among them after the acid directly into the sewer, and then have a recovery value of lead removed.

These acid contains high levels of lead, the human body after excessive exposure to the circulatory system, reproductive system, easy to damage, lead poisoning in children who will be induced toxic encephalopathy or liver disease, severe cases will be life-threatening. In July last year, Wuhan City, the start of scrap lead-acid acer aspire 1300 for centralized treatment, but only deal with qualified renewable resources Yunfeng company only about 15% recovery rate.

Year in October, the city Environmental Protection Bureau issued a circular requiring all scrap lead-acid batteries generate hazardous wastes such as lead unit, be sure to have a qualified waste treatment units, and offenders will be punished by a fine of a maximum of 20 million. After that one-year period, EPA will be the city of Wuhan City 186 production, management and use of lead-acid battery Canon bp-511 under the regulatory unit, the city scrapped the management of lead-acid battery become increasingly standardized.

Wuhan City Environmental Protection Bureau Environmental Monitoring detachment have yan, deputy commander told reporters that in our country, lead-acid batteries are the biggest users of lead, accounting for 85% of the total volume of the above, only the proper treatment of spent lead-acid batteries in order to allow the city to stay away from lead pollution .Canon nb-2l, Canon nb-2lh , Canon nb-4l.

2009年2月6日星期五

Hazards of waste batteries

With the development of science and technology, people's living standards improve, battery life in our production in the amount of growing equipment, tape recorders, repeat machines, radios, cameras, calculators, MP3 machine, telephone, doorbell battery flooded in ... ... every corner of our lives, to serve all levels of society. According to incomplete statistics, 70-80 percent of the students have a tape recorder, radio, repetition machine learning tools, more than 70% of its power use disposable batteries, the average spent per person per week to two batteries. Such a large number of batteries can power-down in consumption, their whereabouts are? Whether people have realized that the batteries readily lost to the environment pollution, hazards in the future? What are the types of batteries? 1. Battery types: the main battery has a one-time batteries, secondary batteries and car batteries. Disposable batteries, including button batteries, ordinary batteries and alkaline manganese batteries, disposable batteries and more mercury. Secondary battery mainly referring to rechargeable batteries, which contain cadmium. Automotive batteries contain lead acid and heavy metals. Second, the hazards of waste batteries: batteries discarded in nature of mercury will slowly overflow from the battery into the soil or water, and then enter the body through the crop, damage people's kidneys. In the role of micro-organisms, the inorganic mercury can be transformed into methylmercury, gathered in the fish's body, the human consumption of such fish, the methylmercury will enter a person's brain cells, the nervous system is seriously damaged, re - would be crazy to death. Well-known Japanese Minamata Disease is caused by methylmercury. Cadmium exudation of land and water pollution, and ultimately enter the body is the liver and kidney damage, can also lead to soft bones, causing severe skeletal deformities. Automotive batteries contain acid and heavy metals released into the nature of lead can cause soil and water pollution, and ultimately cause harm to people. inspiron 2600 battery.Third, knowledge cards: Do you know "ache disease" it? "ache disease" and "Minamata Disease" in Japan's industrial pollution disease. This is due to cadmium or mercury-containing industrial wastewater pollution in the soil and water, entered the human food chain. "Minamata Disease" is mercury poisoning, patients with a large number of savings as a result of methyl mercury in vivo and the occurrence of brain and peripheral nerve damage the central nervous system, light from hand, foot numbness, heavy death. "ache disease" is cadmium poisoning, patients with hand, foot pain, body is very prone to fracture. People who have this disease have been shouted , Until the dead, he was called "ache disease." As a result of years of ordinary dry-cell batteries contain these two toxic elements, so that the battery from production to disposal, the potential for contamination at all times. Battery recycling is imperative! Fourth, recycling of waste batteries: the battery can provide a life for our convenience, but its mission is complete, if not handled properly will also to some extent a threat to our health and living environment, but also a waste. National annual consumption for battery 3000000000, since there is no recovery and lost 740 tons of copper, zinc 16,000 tons, 97,000 tons of manganese powder. The survival of mankind in order to protect the environment, people began to show concern for the recilyingproblems in the hope that reduces the hazards of waste batteries, but batteries yield only 2%. And some countries in the world of waste battery recycling program of some very worthy of our study. inspiron 2650 battery.However, in our country has just begun recovery activities. In China it is difficult to see a deal with waste batteries can be bulk business, we believe that the main reasons: There is no sound recovery mechanisms, recycling capacity is too small to handle the technical needs to be improved. Germany's battery can achieve 70 percent recovery rate because they live in each district are placed recycling batteryme, the Government has legislation on the treatment of waste batteries to carry out the unified management. If each sales counter battery used batteries are equipped with recycling bins, if the relevant departments can be proactive in looking for the development and utilization of used batteries the way, if everyone is "not a small instead of" from my start create a treasure to their homes, protecting the environment atmosphere, but also worry about our days is not blue, water clear, not red flower, leaf not green? ! Also worry about selling out each year three billion batteries be brought back "home"!dell 1g222 , dell bat3151l8,inspiron 2000 battery ,latitude x300 battery.

2009年2月4日星期三

Industrial grade high reliability LED streetlight evaluation indicator system

Global energy crisis had led to environmental change earth day, I seek to understand the urgency of the per capita green with energy-saving technology is important, coincides with the rise of LED lighting industry, a large number of technology companies into this emerging industry, as a result of LED lighting could not rely on real-time performance standards set properly In order to regulate, resulting in a large number of products can not be serious light through the test ended in failure, it is a result of non-design theory study of the pillars for the view, resulting in the use of the owners concerns, delayed the timing of industrial development. With a number of high-performance LED street lamp lighting system components to the important technical specifications of the data on indicators for advanced reference. laptop battery.1.) LED chip & package key technology components of light-emitting efficiency indicators: First and foremost the LED chip & package key technology component of the United States and Japan have been in volume production manufacturers breakthrough in light-emitting efficiency of 100 ~ 120 lm / W and above, go beyond the traditional maximum efficiency of the HID light source (light-emitting efficiency of 90 ~ 110 lm / W), to resolve At present, all less than illumination lamps ≧ 45lm / W issues, meet the road lighting and long life light decline in line with international standards of low average intensity of up to 25 ~ 40Lux specifications and energy-saving 30 ~ 50% of demand. 2.) LED streetlight system Chuan-cooling hot ambient temperature key technical indicators: Lighting system, therefore a temperature not higher than 85-10 = 75 ℃, ITRI LED road lighting lamps normative provisions of the Model Test the durability of the ambient temperature is 60 ℃ cooling system thus lamps must be less than the temperature rise ΔT ≦ 15 ℃, with the Company 150WLED streetlights Chuan hot cooling system as an example to test as low as the temperature rise ΔT ≦ 12 ~ 15 ℃, the thermal resistance calculation of Tr = 0.08 ~ 0.1 ℃ / W, while the general design systems to test the temperature rise ΔT ≒ 30 ~ 40 ℃, calculate the thermal resistance value Tr = 0.2 ~ 0.26 ℃ / W, life will be shortened to 2 times and the bad light by more than 15%. In addition to testing their 350W LED lamp cooling system able to reach a temperature rise ΔT = 15 ℃, thermal resistance value Tr = 0.04 ℃ / W products. inspiron 6000 battery.3.) LED luminous efficiency VS temperature rise specifications and key technologies life indicator: Secondly CREE or Osram LED View Data Dissemination its chip PN junction temperature Tj <85 t =" 6" href="http://www.goodbattery.co.uk/laptop-battery/dell-inspiron-9300.html">inspiron 9300 battery , inspiron 9400 battery , dell 310-6321.