Ordinary free maintenance battery using temperature
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.