18650 lithium ion battery 3.7v

　　What are the applications of photovoltaic cells and how are they maintained?

　　Photovoltaic cells can be used in user solar power, transportation, communications/communications, communications/communications and other fields; it should be noted that the surface of the battery components should be kept clean and the battery components should be inspected regularly. The following is a detailed introduction to the "application and maintenance of photovoltaic cells" method".

　　1. Application of photovoltaic cells

　　1. User solar power supply

　　Small power supplies ranging from 10-100W are used for military and civilian life in remote areas without electricity, such as plateaus, islands, pastoral areas, and border posts, such as lighting, TVs, radios, etc.; 3-5KW household rooftop grid-connected power generation systems; photovoltaic water pumps, Solve the problem of deep water well drinking and irrigation in areas without electricity.

　　2. Transportation field

　　Such as navigation beacon lights, traffic/railway signal lights, traffic warning/sign lights, street lights, high-altitude obstacle lights, highway/railway wireless phone booths, unattended road shift power supply, etc.

　　3. Communication/communication field

　　Solar unattended microwave relay station, optical cable maintenance station, broadcast/communication/paging power supply system; rural carrier telephone photovoltaic system, small communication machine, soldier GPS power supply, etc.

　　4. Petroleum, ocean, and meteorological fields

　　Petroleum pipelines and reservoir gate cathodic protection solar power systems, oil drilling platform life and emergency power supplies, ocean detection equipment, meteorological/hydrological observation equipment, etc.

　　5. Home lighting power supply

　　Such as garden lights, street lights, portable lights, camping lights, mountain climbing lights, fishing lights, black light lights, rubber tapping lights, energy-saving lamps, etc.

　　6. Photovoltaic power station

　　10KW-50MW independent photovoltaic power stations, wind and solar (diesel) complementary power stations, various large parking plant charging stations, etc.

　　2. Maintenance methods of photovoltaic cells

　　1. The surface of the battery component should be kept clean. Use dry or damp soft and clean cloth to wipe the battery component. It is strictly forbidden to use corrosive solvents or hard objects to wipe the battery component. Battery components should be cleaned when the irradiance is lower than 200W/m2. It is not advisable to use liquids with a large temperature difference from the components to clean the components.

　　2. The battery components should be checked regularly. If the following problems are found, the battery components should be adjusted or replaced immediately. The battery components have broken glass, scorched back plates, and obvious color changes; there are bubbles in the battery components that form communication channels with the edges of the components or any circuits; the battery component junction boxes are deformed, twisted, cracked, or burned, and the terminals cannot be used properly. touch.

　　3. The live warning mark on the battery component must not be lost.

　　4. For battery components with metal frames, the frame and bracket should be well combined, the contact resistance between the two should not be greater than 40, and the frame must be firmly grounded.

　　5. When working under no shadow conditions, when the solar irradiance is more than 500W/m2 and the wind speed is not more than 2m/s, the temperature difference on the outer surface of the same battery module (the area directly above the battery) should be less than 20°C. . Photovoltaic power stations with an installed capacity greater than 50kWp should be equipped with infrared thermal imaging cameras to detect temperature differences on the outer surfaces of battery components.

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