What are the factors that affect the actual service life of Panasonic battery?
Panasonic battery has a very important application in our life. Do you know what factors affect the actual service life of Panasonic battery? Here is a detailed introduction:
Overcharge: at the initial stage of charging, the battery terminal voltage of Panasonic battery is low, at this time, there is no hydrogen and oxygen gas precipitation, then the voltage of Panasonic battery terminal rises gradually, when the battery terminal voltage rises to a certain value, the battery will emit a lot of gas. When the battery terminal voltage rises to 2.30-2.35v/cell (this voltage is called the gas generation point voltage), the gas in the battery increases significantly. With the charging process, there are more and more PbO2 on the surface of the electrode, but less and less PbSO4. The oxygen evolution rate of the positive electrode will be higher and higher. At the same time, the hydrogen evolution will begin at the negative electrode of the battery. Therefore, overcharge will make the battery produce a lot of gas, which will make the battery lose water and lead to premature effectiveness and capacity reduction. A kind of
Overdischarge: the discharge that is carried out in order to regularly check the charge capacity of the battery during operation, which is called check discharge. The ending voltage of 0.1C constant current discharge of VRLA battery is 1.80v, and the continuous discharge at the end of discharge is called over discharge. Once it enters the state of over discharge, the voltage at the battery end will accelerate to drop, which is very easy to cause power supply interruption, also cause the consumption of active substance transition, reduce the pore of active substance and the reserved reaction area for the next charge, and cause the subsequent charge, use and maintenance of the battery As a result, Panasonic battery could not be fully charged and its capacity was greatly reduced. A kind of
Temperature: the operating conditions also have an important impact on the life of Panasonic battery. If it is used for a long time under high temperature, the battery life will be reduced by half for every 10 ℃ increase in temperature. A kind of
Sulfation of negative plate: for VRLA batteries that can perform normal work, lead sulfate, the product of negative plate discharge, is small particles, which is easy to recover to fluffy lead when charging. However, some battery discharge products are insoluble large particles of lead sulfate, which cannot be reduced to fluffy lead when charging. This negative plate is called sulfation. The reasons for sulfation of the negative plate are: insufficient battery charge for a long time, long-term discharge under high temperature, long-term discharge for use, electrolyte concentration stratification of high-type plate and battery water loss, etc. The sulfation of the negative plate will directly cause the capacity of the battery to shrink. The effective way to prevent the sulfation of the negative plate is to keep the capacity of the battery full all the time.