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Factors of battery life

by:Power Kingdom     2021-07-12

  1. Overcharge: In the initial stage of battery charging, the voltage at the end of the battery is low. At this time, hydrogen-free oxygen is released, and then the voltage at the end of the battery gradually increases. When the voltage at the end of the battery rises to a certain value, the battery will release a large amount of gas. When the battery terminal voltage rises to 2.30-2.35V/pc (this voltage is called the gas point voltage), the gas in the battery will increase significantly. With the increase of the charge, the PbO 2 on the electrode surface becomes more and more, while the PbSO 4 becomes less and less, and the oxygen evolution rate of the positive electrode is also increasing. At the same time, the negative electrode of the battery also began to evolve hydrogen. Overcharging will cause the battery to produce a large amount of gas, cause the battery to lose water, and cause premature impact and early loss of capacity.

  

  2. Overdischarge: In order to periodically check the charging capacity of the battery during operation, it is called nuclear discharge. The final discharge voltage of the battery at a constant current of 0.1C is 1.80V, and the continuous discharge at the end of the discharge is called overdischarge. Once it enters the over-discharge state, the voltage at the end of the battery will drop rapidly, which can easily cause the interruption of power. This will also cause excessive consumption of the active material, reduce the pores of the active material and the reaction area of u200bu200bthe next charge, cause difficulties in battery charging and maintenance, and ultimately lead to the failure of the battery to fill, and the battery capacity will be greatly reduced.

  

  3. Temperature: The operating condition of the battery also has an important influence on the life of the battery. If used for a long time under high temperature, the battery life will be halved every 10 degrees.

  

  4. Sulfation of the negative plate: the battery can work normally. Lead sulfate is used as small particles when charging, but some battery discharge products are insoluble large particles of lead sulfate, which are easily reduced to piled lead during charging, but some battery discharge products are insoluble large particles. Granular lead sulfate. The charge cannot be reduced to velvet lead, and this negative plate is called sulfate. The causes of sulphate alkalization of the anode plate include: long battery charging time, long-term high-temperature discharge, long-term discharge and shelving, high-type electrode plate electrolyte concentration stratification, battery moisture loss, etc. The negative electrode sulfate will directly cause the battery capacity to decrease. An effective way to prevent the loss of sulfate from the negative plate is to keep the battery fully charged.

  

   5. Long-term non-discharge under floating charge state: Long-term non-discharge will lead to the deposition of active materials in the battery. If the active materials are in a long-term precipitation state, it is difficult to participate in the battery The internal chemical reaction causes the loss of battery capacity.

  

  6. After the new battery is installed, an acceptance discharge should be carried out to test the capacity of the battery; after three years, a nuclear discharge should be carried out once a year, which has two effects: first, 30%/50% discharge is used to prevent long-term battery The deposition of active material; second, 80%/100% battery discharge. It is used to check the charging capacity of the battery. The third is to check the discharge of the battery and find out the bad battery so that it can be replaced in time, because the bad battery in the battery pack is very harmful. Contact: 18038382979

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