The factors affecting the service life of the solar battery
Solar battery if according to normal use, according to the charging once a day, about three years. If necessary use rechargeable balancer, at about five years. Solar battery is a 'battery' in the application of solar photovoltaic power generation, at present there are lead-acid maintenance-free battery, the ordinary lead-acid battery, gel battery and alkaline nickel cadmium battery. Domestic currently widely used solar battery mainly: lead-acid maintenance-free battery and gel battery, the two types of batteries, because of its inherent 'free' maintenance of properties and the characteristics of less pollution to the environment, very suitable for reliable performance of the solar power system, especially the unattended station. Ordinary lead-acid batteries due to large require constant maintenance and environmental pollution, so the main suitable for maintenance ability or low-grade situations. Although alkaline nickel cadmium battery has good low temperature, overcharge, discharge performance, but because of its high price, only suitable for a special occasion. With the widespread use of solar photovoltaic power generation system, as the matched battery is becoming more and more get the attention of people. The working principle of solar battery during the day the sun to the solar module, make the solar battery components to produce a certain range of dc voltage, the light energy into electricity, then transmitted to the intelligent controller, through the intelligent controller of overcharge protection, electricity from solar energy components to storage battery; And storage battery will be necessary, the so-called is chemical energy storage battery, a necessary release energy of an electrochemical device. Form the main ingredients of lead-acid batteries are as follows: the anode plate ( Lead oxide. PbO2) — > Active material of cathode plate ( Spongy lead. Pb) — > Active substances (electrolyte Dilute sulphuric acid) — > Sulfuric acid ( H2SO4) + water ( H2O) Battery shell isolation plate (other Liquid suppository. The lid, etc. ) The use of solar battery and maintenance ( 1) Optimum temperature 15 ~ 20 ℃ ( 2) Solar battery connection method is: will the solar battery positive electrode connected to the positive and negative and the cathode. This solar battery power will be doubled, and voltage with a solar battery voltage. Solar battery polarity column must not short circuit ( Meet) 。 ( 3) For new installations or refurbished after the first solar battery charging, charging for a long time, as the initial charge, 1/10 should be according to the rated capacity of charging current. Before installation must measure whether the battery is enough, please in sunny places such as the shortage of power battery for 8 - 16 hours to charge or the battery is enough, first with the alternating current (ac) should strictly avoid discharge charge. With alternating current (ac) normal charging, had better use graded charging ways, namely, at the beginning of the charging with constant current charge, large current charge to the charging pressure and constant pressure after a certain time to switch to the conventional way of constant pressure and discharge. ( 4) Keep the battery itself clean. Installed solar battery column should be coated with vaseline, prevent corrosion column. ( 5) For solar battery configuration management technology, on-line monitoring for solar battery internal resistance on-line measurement and analysis, timely find the defects of battery, timely maintenance. ( 6) Frosty winter prevent solar battery. Avoid direct sunlight, summer should be put in ventilated gloomy and cold place the solar battery. Solar energy as a new clean energy the toast of environmentalists, but 'month have waxing, rain or shine day windy rain', in the absence of the sun, and what should you do? Solar battery is to this kind of situation. Photovoltaic off-grid power generation system is to use the principle of the photoelectric effect to convert solar energy into electrical energy power generation system, usually by the solar modules, controllers, batteries, dc/ac inverter, etc. Plan, is the role of the solar cell components of solar energy into electricity, supply work load or recharge batteries; The role of the controller is for battery charge and discharge protection; Batteries are used to store electrical energy; Is the role of inverter dc transform for alternating current (ac). At night or rainy day, the solar battery components will not work when the battery power supply to the load. The workings of a battery can be divided into recycling and use two kinds of floating. Often in frequent charging and discharging work state, namely recycling; Is often used in the charging state is floating, to make up for the loss caused by self-discharge of battery capacity. Photovoltaic power generation system in VRLA battery belong to recycled way. Solar battery should have the following features: 1, long life, special process design and colloid electrolyte to ensure long-life battery. 2, good deep circulation ability, has the good charge and discharge capacity. 3, the machine is suitable for various environmental requirements, such as high altitude, high temperature, low temperature under different conditions, such as the battery can be normal use.