Digital battery

Camera battery digital battery commonly used in lithium-ion batteries, batteries nickel hydrogen, nickel-chromium batteries, alkaline batteries, etc … Most digital cameras use batteries AA Ni-MH Laptop battery to do.

 

1, Ni-MH battery features:

 

Nickel-metal hydride batteries (NIMH) is one of modern electronics, the battery the most widely used, a large green with a unique ability, the discharge characteristics of a smooth, high universality, heat a little and so on. The disadvantage is that large, self-weight important.

 

2, Ni-MH to self:

 

Ni-MH battery nominal voltage of 1.2 V, in the case of sufficient power to 1.35 V, with Class AA regular alkaline battery are similar, essentially universal, Ni-discharge characteristics of MH battery are very good, very smooth discharge curve, consumption of electricity is about to end, the voltage drops abruptly, which is close to the nickel chromium batteries, but not as good as nickel discharge current instantly piles of chromium. In addition, nickel-metal hydride batteries used mercury-free design, which is of great importance to environmental protection.

 

3, Ni-MH battery structure:

 

AA Ni-MH VGP-BPS9 battery with the same form as ordinary AA batteries. With nickel chromium batteries, like nickel-metal hydride batteries used reversible chemical reaction to reach the charge and discharge process. Therefore, in the process of loading and unloading of the battery will produce a large number of gas inside the battery internal pressure is relatively high, therefore, nickel-hydride batteries are used in metal in the design of the exhaust vent to prevent excessive internal pressure caused by an explosion. Currently, we have been in contact with GP series battery, do not see how the tube, because the battery is installed on top of a circular plastic film used to prevent blockages and prevent the positive vent cap Hull with the negative short-circuit.

 

4, the battery memory effect:

 

The effect of so-called memory refers to the battery charging and discharging process, the chemical composition of the internal battery is determined in a region can not continue to produce a chemical reaction phenomenon. With an example: When the battery is fully charged, it can be a continuous stream of 60 minutes. Now we’ll use this section to conduct the VGP-BPS13/S battery of this electric discharge, discharge to 30 minutes to stop, and then this part of the battery to charge a good 30 minutes after powering up continue to perform, are not completely discharged each time, after N repeated operations The batteries have a memory effect, the process used in the future, when the discharge of the battery after 30 minutes, more output current, which is the battery capacity of this section reduced by half. Of course, we now use nickel-metal hydride batteries in general, this phenomenon do not occur, because the chemical composition of nickel-hydride batteries and nickel metal battery chromium different. Ni-Cr memory effect the battery is very serious.

 

5, the battery:

 

Is slightly different and the Ni-Cr, Ni-Cr battery is a constant pulse of current to recharge, while the nickel-hydride batteries in metal using a wavelet, the relatively smooth current to recharge. In emergencies, the two shippers are interoperable. Charge should be to control the charging current appropriate, how to estimate the current load properly done? This depends on the battery capacity to decide. In general, civil standard battery 16 hours to charge, charge current is: VGP-BPS9/B battery capacity / 10, units mA. There are fast charge, fast charge current standard of 2.5 ~ 5 times, there is no uniform standard. Our selection of chargers, they should try using the standard charger, how to determine the load current chargers do? When we buy a magazine, looking for a JS or have a multimeter multimeter, charger plug supply, multimeter affected DC 500mA stall, desktop charger red pen and then the film cathode of the battery, pen blackboard, and negative films, which can be approached by reading multimeter to determine feeder load current, because the internal resistance of the battery is low, so close to the actual load meter reading in progress. You can also use a number of self-feeder, the advantage of such a charger stops automatically loads the son not to worry people. There is also a charger with a trickle charge is a function, which is an electric charge in good condition, the charger automatically uses less than 10 times the current standard of care for small current continues to maintain the battery charge which is to maintain the battery capacity and prolong the life of the battery well. Al-Sahaf GP has recommended that such a combination of pricing Po charger recommended. In addition, we should try to avoid the use of fast-charge, fast charge, the chemical reaction inside of the battery is very severe, the temperature is high, which will accelerate the aging of the battery and shorten battery life. However, when you exit or emergency charger fast, but very useful oh.

 

6, the discharge of the battery:

 

Were fed the exercise, and consumption. The VGP-BPS9A/B battery is the same charge of electricity, we must pay. In addition to the normal discharge in outdoor use, why do we still run the battery to discharge it? Please come listen to me 11. When our camera due to run out of batteries needed to recharge the battery when we find that these batteries run out in other electrical devices can continue to use? In addition, for each cell the same as that used in the electrical length of time-varying? This indicates a problem is the capacity of these batteries is inconsistent. Why is there such a situation? The reason is: we use our appliances, most are two or more cells of the battery is to link the battery packs in accordance with Ohm’s law, one can see that throughout the series circuit current is equal, the internal resistance of each cell can not be fully compatible with (even at the same time, the same production line for batteries), then the voltage drop at both ends of each section and the power consumption of battery is not completely the same. This has led to the battery in the same imbalance in the relationship between the circuit, eventually leading to one or more batteries in the long “enough to eat, could not stop,” the State until that it is damaged. The reason we display on the battery discharge, while abhorrent to eliminate memory effect, on the other, so that each section of the battery as much as possible to reach equilibrium, with full, finished with release, work synchronously. So how can we discharge? Please keep in mind this truth: “discharge, we must separate each section of the discharge of the VGP-BPS9A battery!” Otherwise, cons-productive, not as good as letting go. Discharge resistor or small bulbs can be purely resistive components such as resistance controlled discharge at 1.5 to 4 ohms, slow discharge big, too small to heat the battery. In practice, it is recommended to use three 3.8V parallel beads the electric discharge lamp, a resistance of 1.7 ohms at this time, discharge current of 700mA, less than 10 minutes, the lights went on discharge is completed, it is intuitive. You can also use the method of resistance + discharge bulb, Shi measure the resistance controlled at between 1.5 and 4 ohms on it. We can be converted to produce low discharge of the battery charger of the quality we want is to buy charger less (about 5 million euros) for a better selection of housing and support this amendment, then remove the internal battery charger for all electronic components, retaining only the circuit board and watching the battery then welded to both ends of each VGP-BPS8A battery clip with our light bulbs or resistance and so on, so we put on the equipment yourself better.

 

7, battery care:

 

In the process of using the battery, following the release of “full full” principle, do not eat too full, do not be too tired. Beware of the battery shorted on, this is very dangerous. Do not tear the skin in plastic drums, as this may easily lead to a short circuit, this one is very dangerous. Do not disassemble the battery or the battery in fire. A long time does not use the battery must be filled with storage, the reopening of the first discharge, then charge to use. Try to match the use. If we could do the above, we will always keep the battery in good condition, the best services for the majority of DX.

 

8, the battery of purchase:

 

Buy batteries, in addition to a pair of piercing eyes, we must also note the following points: ① Select JS confidence, at least the assurance; ② need to choose according to their abilities, some of the best choices for large capacity; ③ Choose well known brand battery;

With the growing popularity of laptops, notebooks on all aspects of the problems appeared in various media on the largest number of arguments for the proper use of laptop batteries, notebook batteries of certain items that the use of personal experience, while others claim expert advice (which we often do these sales), all sorts of stories, the number argument.

 

The author is also a regular laptop user, but not an expert, but with several years experience in the use of notebooks, the author through a friend recruited dozens of university students using a computer mobile, so they talk about their experiences on the use of cell phones, coupled with her a little more experience, summed up what is available to the

We as a reference, hoping to give everyone a little help.

 

Argument 1: activation of a new VGP-BPS8 battery

 

View 1: Before you buy a new battery inside, there will be more than 3% of electricity, more than the battery inside the power exhausted, to rest, then reuse a load external power. The charging time must exceed 12 hours, three times in order to activate the battery.

 

View 2: No, the battery for 10 hours of rechargeable battery to activate the activity of the normal load, the method of release for activation.

 

Survey Results: The authors studied 24 students from colleges and laptop users, 18 is the second view, and the manner and does not charge the battery for future use can hurt, of course, exclude damage to the natural elements. The author himself is also the case when the normal use of a new battery for up to two hours and a half, now two years, the state of the battery is still good, still can reach more than two hours, so I fear I have been satisfied?

 

the proposed method: I agree with the second view, based on available information indicates that the activation of cell work should be completed at the factory and a plant cell battery with a capacity of some natural wear to avoid damaging the VGP-BPS8A battery. The activation of the battery must be in no case to protect the circuit can be with its own circuit of lithium-circuit protection, the purpose of this part of the circuit is to prevent the battery charge and excessive discharge usually filled after charging the battery when the indicator light off, the battery can be recharged in electricity, and then you plug the power plug to recharge the battery in the face of what? Available from the battery can be seen on the battery status of any charges, another teaches you offer a simple way to be able to determine whether there during the battery charging, battery charge , where the phenomenon has a fever, when the battery is full after one hour (power plug does not fire), you’ll try the battery to see if the battery is still warm, not hot? The result is undoubtedly the cold, because the battery is not charging and discharging state is certainly not the heat. Manufacturers of portable computers in the factory will offer a new battery for more than 10 hours. This sentence may be generated for some users the wrong point of view first, the author of this opinion, should be taken into account that some notebook manufacturers a new user in the battery again when n is not fully capture the skills, just so they can charge directly for 10 hours, which should be the business opportunity.

 

Secondly, the argument two: whether the AC disconnects the VGP-BPS8B battery?

 

View 1: Use an external power supply when the battery removed.

 

View 2: Use an external power supply is not necessary to remove the battery.

 

Survey Results: Most students in the use of an external power source, the battery removed, only a few use an external power supply when the battery is placed above, the few brands are used by students in several global brands.

 

the proposed method: In fact, if the battery is removed, the conflict has focused on the use of an external power supply when the battery is in charge of question

. We must know that the number of loading and unloading of the battery life is directly related to the lithium-General established the number of loading and unloading are fixed number of charge cycles only 400-600 times, especially products modified, but 800 times, once for each rechargeable batteries a step toward retirement. The first argument is simply because they are afraid to use power, the battery will be conducted on the above charge, not only to increase the number of charge cycles, but also cause an overload. The second view is that the battery is full power on the computer using an external power supply will not recharge. In fact, both views have their right side, but also in the wrong place. Because only the views expressed by individuals is not very full after my investigation, many laptop manufacturers taking into account the vulnerability of the stack, and the proceeds added to technology protection VGP-BPS9 battery, and therefore different laptop batteries corresponding brand protection technology pricing is different, as some large companies are doing very well in this area, such as IBM, Hewlett-Packard, Toshiba, Compaq, etc.. One of the most thoughtful consideration is that IBM, the IBM laptop can detect the location of the discharge of the battery, laptop battery ThinkPad only less than 95% of the time will reload automatically. This can play a very good protective effect on the battery, held today and many other manufacturers followed. So, as drums, you do not have time to use pull down, because only when the capacity is less than 95% of the time, he is responsible. But even so, if you are prolonged use of computers, or will be removed from the battery to compare well, because the long duration of heat generated when the laptop battery will cause some damage. However, some other “little brand” batteries, may not benefit from such treatment because he was not within the protection technology of the battery. I like to use a certain brand of computers phones if the battery is fully charged to the above, when you use an external power supply has been confirmed at the first charge on electricity, because the storage battery, will wear, can not reach 100 %, while not 100% as long as the power supply connected to the load. Each access to an external power supply is equivalent to recharge the battery once, although only a small charge will be yet. It therefore proposes that we use when the machine according to their own situation, look at the manual laptop, choose whether you want to use an external power supply when the VGP-BPS9A battery removed.

 

Thirdly, the argument 3: how to load correctly?

 

View 1: The battery should always be all exhausted, so that consumption of portable computers to automatically stop and reload every time must be filled.

 

View 2: When the battery is very deliberately not pay attention and use it when I wanted to pay extra.

 

Survey Results: The majority of students said that, needless to the view first, as used in automatic standby mode, then load, but also as the second point of view, it is free. Are generally used when the battery must be recharged when the computer has prompted further charge, of course, calls per hour may be set, the default is 3%.

 

the proposed method: In this paper, the proposed method with the majority of students is the same. In fact, regardless of nickel batteries using a laptop-metal hydride, lithium batteries are such a memory effect, and nickel-hydride batteries with metal memory effect is very obvious, but it will effect memory lithium, but his memory effect smaller than nickel-metal hydride Bale. There is no memory effect on lithium-that only exaggerated and irresponsible to do business in advertising, is totally misleading. Well, since the VGP-BPS9A/B battery has a memory effect, it should be noted at the load point, as far as possible, then run out of charge, but you do not need to say deliberately use the computer to s ’stop automatically, so that although there is no harm in using them (because the laptop battery has a charge-discharge secure a laptop automatically shut down has not yet reached the standard battery protection discharge), but you do not feel tired? In fact, less than 3% of the burden in this way is very good, memories will certainly effect compared to natural wear, there should be nothing. The second count on the charge to view the author is totally disagree and we have already said, if the laptop battery nickel metal hydride, lithium, which has a memory effect, if in this way, then the battery life will be shortened.

Introduction 1 battery is a UPS system is an important component of its direct impact on the bottom of the reliability of the whole UPS system. No matter how UPS designed for advanced features complete how, once the Laptop battery failure, even the best UPS is also unable to provide an uninterrupted power supply. Do not use inferior quality and cheap due to covet lead acid batteries, it will affect the reliability of the entire UPS system, and will therefore result in greater losses. Batteries entire UPS system mean time between failure (MTBF) over the game. If the use and proper maintenance, will be able to extend its life, instead of his life will be shortened. Therefore, we must understand the basic principles and considerations of the use of the battery.

   

Two general types of lead-acid batteries can be divided into lead acid batteries, maintenance free lead-acid batteries and nickel-cadmium batteries, taking into account the load conditions, the use of environment, life and cost and other factors, typically chosen UPS VRLA maintenance free batteries. Its main feature is the load generated when the cathode side oxygen by chemical reaction in the negative to reduce water use life float specified without adding water to maintain, so called maintenance free lead-acid batteries. Maintenance free battery is only when compared to the normal process eliminates the need to add water or distilled water, adjust the surface of the electrolyte of the work is not relieved all maintenance work. Instead, to achieve the UPS uninterruptible power supply, we must be more careful in safeguarding and maintaining good lead-acid maintenance-free batteries.

   

Three main factors affect the life and warn us about the following important factors affecting the life of the hp Pavilion DV1000 battery and use the process should pay attention to the questions:

   

⑴ temperature greater impact on the battery. The ambient temperature is too high, the battery will overload produces gas, the temperature is too low, the battery will be pretty cool, it will affect battery life. Therefore, the general provisions of the ambient temperature around 25 ℃, UPS is also float temperature setting voltage. Practical applications, the battery is generally 5 ℃ ~ 35 ℃ in the office, below or above 5 ℃ to 35 ℃ will greatly reduce battery capacity and shorten battery life.

   

⑵ deep discharge of battery life also has a great influence. More depth of battery discharge, less the number of recycling activities, and should therefore avoid the use of depth of discharge. Although the UPS has a battery low protection potential, the general single-cell, when discharged to 10.5 V or more, UPS will automatically be closed. However, if the UPS is lightly loaded or discharge any discharge load may cause the depth of battery discharge.

   

⑶ batteries in the storage, transportation, installation, following the loss of part of the self-discharge capacity. Therefore, after installation before commissioning should be based on the open circuit voltage of the toshiba PA3191U-3BRS battery to determine the remaining capacity of the battery, then a different approach to supplement charging batteries. Set aside extra batteries every 3 months should be an additional charge. Perhaps by measuring the voltage of the battery open circuit to determine if the battery is good or bad. For 12 V batteries, for example, if the open circuit voltage is above 12.5 V, the energy storage battery, said there are more than 80%, if the open circuit voltage less than 12.5 V You should immediately supplement charge. If the open circuit voltage less than 12V, the battery stores electrical energy, said less than 20%, the battery useless.

   

⑷ battery charge and discharge generally expressed C, C is the actual value associated with the battery capacity. For example, batteries 100AH, C = 100A. Matsushita Lead-acid maintenance-free battery charging current is 0.1C best on the market, the charging current can not exceed 0.3c. Charging current is too large or too small will affect apple M8403 battery life. The current requirements for general discharge of 0.05C between ~ 3C, UPS, normal use can satisfy this requirement, but must also prevent the occurrence of unexpected situations, such as the battery short-circuit and so on.

   

⑸ Load Voltage in the work of backup UPS battery, electricity is in the state of charge under normal circumstances, only the power outage is discharged. To extend the battery, UPS shippers typically use constant pressure to limit the control over the way, the battery is fully charged state to float after each section on the current float is set at 13.6 . If the charging voltage is too high causes the battery before charging, the battery is charging less than the contrary. The charging voltage abnormality may be caused by configuration errors caused by the battery or charger malfunction due. Therefore, when installing the battery, the battery must pay attention to the accuracy of the specifications and quantities of different specifications, different batches of cells do not mix. Do not use inferior charger, plus a charger, but also to consider when installing problem of heat dissipation. Currently, to further improve the life of the battery, UPS has developed and adopted a kind of ABM (Advanced Battery Management) three-stage program of intelligent BATCL50L battery management, ie load is divided over initialization, floating charge and rest three stages: the first step is constant load balance flows, recharge the battery capacity to 90%; second stage is floating Chong Chongdian load capacity battery at 100% and then stops charging, third step is a natural discharge at this stage, the battery using its own leakage current discharge, as the minimum voltage required, and then repeat these three steps. In this way, the nature of changes that were previously fully charged, even after the battery during the day to 24 hours of floating state, thereby extending battery life.

   

⑹ Following the interview without system battery electrolyte absorption in normal use will not produce any gas, but if the user is misused, causing the battery before recharging it will produce a gas, this time pressure increases the battery, battery pressure valve on top of open, burst out a serious cause of the battery.

   

⑺ UPS running the process, be careful to control the terminal value of battery voltage, current float value, each battery voltage, battery and the DC bus to ground resistance and the insulating state.

   

⑻ not individually increase or decrease the number of single charge of battery cells, resulting in the ability of imbalance single sony VGP-BPS2A battery charge and an uneven, reducing battery life.

   

⑼ the battery must be installed as far as possible in a clean, fresh, airy, dry, and avoid sunlight, radiators or other heat sources of radiation effects. Batteries should be placed on positive legislation, non-tilt. Each battery must be securely connected between the terminals.

 

⑽ regularly maintained. The battery in use after a certain time should be inspected regularly, as well as observations of their appearance is abnormal, measurement of the battery voltage is average and so on. If you are not a long term power outage, the battery is always in a state of charge, this would allow the activity of the deterioration of the battery. Thus, although power outages, UPS is also needed on a regular basis to test the discharge of the battery to make it active. Discharge test can usually be done in three months, the practice is UPS with a package - preferably 50% or more, then turn off the electricity, so that UPS is able to discharge the battery, the duration discharge by the battery capacity is usually in terms of a few milliseconds to tens of ms, the discharge to resume electricity supply, continue to charge the battery.

 

4 Conclusion and clearly understand the impact of lead-life battery acid, the main factors and the use of the procedure should pay attention to issues of our UPS system, use and maintenance of appropriate lead acid batteries are a great help. Hopefully, in their daily work, the proper use and maintenance of a good lead-acid batteries so as to obtain a more rational use.