Solar street light battery inspection and maintenance

How to check solar street light battery? 1. Observe whether the surface of the battery is clean and whether there is corrosion or leakage. If there is a lot of dirt on the outer casing, wipe it with a damp cloth dipped in washing powder. 2. Observe whether the appearance of the battery is concave or bulged; 3. Tighten the connecting screws between the battery cells at least once every six months to prevent loosening, resulting in poor contact and other failures. When maintaining or replacing the battery, the tools (such as wrenches, etc.) used must be insulated to prevent short circuits. 4. After the battery is discharged, it should be charged in time. If the battery is insufficiently charged in the case of continuous rainy days for many days, the power supply time of the power station should be stopped or shortened to avoid over-discharge of the battery. The maintenance personnel of the power station should perform balanced charging on the batteries on a regular basis, generally 2 to 3 times per quarter. For batteries that have been out of use for a long time (more than 3 months), they should be recharged and then put into operation. 5. The battery room should be well insulated in winter, and the battery room should be ventilated in summer. The temperature of the battery room should be controlled between 5°C and 25°C as much as possible. 6. Keep the lighting surface of the solar module array clean. In areas with little rain and heavy wind and sand, it should be cleaned once a month. When cleaning, first rinse with water, and then dry the water with a clean soft cloth. Do not rinse with corrosive solvents or wipe with hard objects. . Cleaning should be done in the time without sunlight or in the morning and evening. It should be avoided to wash the modules with cold water when the PV modules are heated by the sun during the day. Very cold water will break the glass cover of the PV modules. 7. Regularly check whether the connection between the photovoltaic modules is firm, whether the connection in the square matrix junction box is firm, and tighten as needed; check whether the photovoltaic modules are damaged or abnormal, such as damage, grid lines disappear, hot spots, etc.; check Whether the bypass diode in the PV module junction box is working properly. When there is a problem with the photovoltaic modules, replace them in time, and record the specific installation and distribution positions of the modules in the photovoltaic array in detail. One of the facilities to ensure the stable operation of solar street light is the battery, so how should we maintain the battery during the use of the battery? In fact, the most important thing is to observe more, find and solve problems in time, so as to ensure the working efficiency of the battery and prolong the service life of the battery to a certain extent. The battery should be maintained 1~2 times a year, mainly to measure and record parameters such as the voltage and internal resistance of the single battery, and compare the actual measurement data with the original data. Once the difference between individual unit cells is found to increase, it should be replaced in time. . In some simple solar street lights, the power consumption should be controlled according to the energy storage condition to avoid damage to the battery due to over-discharge. Any abnormal situation should be checked and repaired immediately. Since the photovoltaic power station uses solar energy to generate electricity, and solar energy is a discontinuous and unstable energy source, it is easy to cause the battery pack to be overcharged, overdischarged and undercharged. The battery pack is the weakest link in the photovoltaic power station, and the battery should be checked and maintained regularly.
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