Maintenance Method of German Sunlight Battery

German sunlight battery is an indispensable spare part of the power supply system. German sunlight battery is widely used in the computer room because it does not need water, does not overflow acid, and has very little acid fog. Batteries have a certain service life. If we do not understand the electrical characteristics of batteries and do not pay attention to maintenance at ordinary times, it will cause capacity loss and premature failure. Once the capacity of sunlight batteries decreases and does not reach the predetermined discharge time, it will not guarantee the normal use of electrical equipment, or even cause major liability accidents. Therefore, we must understand the performance of batteries and be able to correct them. Use and maintain correctly.

In order to maintain the capacity and prolong the service life of German sunlight battery, we summarize the following maintenance methods according to practical experience:

(1) Maintain appropriate spacing. Oxygen recrystallization process produces more heat in the battery, but less exhaust gas reduces the loss of heat. The internal temperature of the battery is usually very high. Therefore, the battery should be placed in a well ventilated position, arranged not too closely, and the distance between single batteries should be kept at least 10 mm.

(2) Keep the appropriate temperature. Excessive temperature, accelerated chemical reaction, and enhanced interaction between lead and acid make it easy to sulfate and reduce service life; low temperature, viscous sulfuric acid, slow electron dissociation speed, poor electrode activity and reduced battery capacity.  10-30 is a suitable temperature, according to the actual situation, various means can be used to adjust the temperature.

(3) Keep clean and hygienic. Clean the battery and rack regularly every week to keep the battery clean. The accumulation of too much dust will lead to bad contact between the connection points of the battery pack and change the voltage value of the battery during charging and discharging, which will easily lead to faults. When wiping batteries, remember to use dry cloth or brush, preferably vacuum cleaner.

(4) Inspection once a day. Every day, we should check the battery regularly. First, we should smell whether there is a slight acid odor in the air. If there is a slight acid odor, it is the acid fog discharged from the battery, we should timely carry out ventilation treatment. Second, we should see whether the shape of the battery is deformed, whether the terminal of the battery and the safety valve have leakage, whether the safety valve can be opened normally, and if necessary, we should replace the battery.

(5) a week of testing voltage value. Germany sunshine battery float voltage single value is 2.25V, not less than 2.16V. Voltage is too low, the individual battery will fail, because of the long-term lack of floating charge passivation voltage is too high, the gas overflow amount, gas recombination efficiency is low. Battery charge voltage value of 2.35V should not exceed 2.40V, high charging voltage will cause the charging current is too large, the heat generated will make the electrolyte temperature, temperature will lead to the internal resistance of the battery internal resistance decreased, decreased and increase the charging current, so the battery will deformation and cracking. Note: in the test battery voltage value, must be measured in the battery at both ends, if in other tests, will cause a voltage drop and the test result is not very accurate.

(6) the voltage measured monthly monomer battery value Germany sunshine. A higher number of battery series are voltage imbalance, voltage unbalance is easy to produce long-term lag behind the battery charging battery, if not completely discharge, in the future will further increase the depth of discharge, after charging more backward. In this way, the more the number of charge and discharge, unbalanced is more prominent, resulting in backward battery failure. Therefore, the voltage value of each single battery should be measured monthly. Batteries under 2.2V should be charged equally so that they can be fully charged to avoid the failure of individual backward batteries.

(7) Charging and discharging once every six months has two advantages: 1) the capacity of solar cells can be tested and the capacity of storage batteries can be evaluated; 2) the sulfation can be eliminated. There are two discharge modes, one is direct discharge by load (when the load is large), i.e. cutting off the external power supply and releasing 70% of the total capacity directly from the battery power supply; the other is discharge by false load (when the load is small), which uses variable resistors parallel to the two ends of the battery group, cutting off the external power supply from the battery, using small current at the beginning of discharge, one by one. After the completion of the discharge current increase, do not immediately remove the false load, waiting for the full battery after unloading, so as to avoid the risk of arc in high current battery charging time.

(8) voltage discharge termination voltage value not less than. Germany sunshine battery discharge to the termination voltage, the voltage will drop sharply, if we continue to discharge, have little power, little significance, but will reduce the service life of the battery, so the discharge voltage should be reduced to stop discharging termination voltage value. Different discharge rates, termination voltage values are different, the discharge rate, lead sulfate less generated, even if the discharge voltage is very low, the plate will not be damaged, the cell can be discharged to 1.75V; rate of discharge of small lead sulfate increased significantly, and the activity of material expansion will produce stress caused by plate bending or falling of the active material, affect the battery Life, so the termination voltage value high, usually in 1.80~1.85V.

(9) not excessive discharge. Germany sunshine recycling battery, its life mainly depends on the depth of discharge. The discharge of the deep, the interaction between the PbO2 particles more relaxation, easy to fall off, it will shorten the life cycle. In the depth of discharge reaches 50%, to access power generators, the battery capacity recovery after power supply.

(10) Old and new batteries should not be mixed as far as possible, because the voltage of new batteries rises rapidly in the charging process, which easily causes the old batteries to be undercharged and always in undervoltage working state, thus affecting the service life of the batteries.

(11) The idle German sunlight batteries are charged quarterly, because the long-term idle negative poles of the batteries will form a kind of coarse and difficult to accept charging PBSO4 crystallization, which is called irreversible sulfation and will lead to premature failure of the batteries. The service life of batteries is generally about 8 years. Because we insist on the above maintenance methods, the battery purchased by our company in 1994 has been tested by capacity, and it is still within the design capacity range, and can be continued to use.