Solar energy and commercial power complementary power supply

Abstract

The invention discloses a solar energy and commercial power complementary power supply which consists of a solar-cell panel (1), a complementary charging controller (2), a UPS (Uninterrupted Power Supply) inverter (3) and a storage battery (4), wherein the complementary charging controller (2) is respectively and electrically connected with the solar-cell panel (1) and commercial power supply (6); the complementary charging controller (2) is also respectively and electrically connected with the UPS inverter (3) and the storage battery (4); the UPS inverter (3) is respectively and electrically connected with the commercial power supply (6) and the complementary charging controller (2); and the UPS inverter (3) is also respectively and electrically connected with an electrical appliance (5) and the storage battery (4). The solar energy and commercial power complementary power supply has the functions of quick charging, energy saving, environmental protection, no noise and capabilities of reverse connection preventing protection, overcharging protection and over-discharge protection, can be charged by adopting solar energy / or commercial power, can ensure that a battery can be really charged fully and cannot be damaged, has the characteristics of less heating, low loss and high efficiency and cannot damage any elements of an electrical appliance after being used for a long time.

Description

technical field [0001] The invention relates to a solar energy and commercial power complementary power supply, specifically a power supply that uses solar energy or / and commercial power to charge the power supply and provides power for electrical appliances when there is no commercial power or power failure. Background technique [0002] There are many chargers in China now, but in terms of technology, most of the chargers used for UPS are not very high. Some UPSs use the well-known constant current charging method. Although this charging method is low in cost, The speed is also fast, but the battery is not really full, it is just a false full, when the charger is removed, the voltage will drop suddenly, which will do great damage to the battery, and some UPS use trickle charging , although this method can fully charge the battery, the charging speed is too slow to keep up with people's requirements for the charging rate; most of the inverters produced and used in China are...

AI Technical Summary

Problems solved by technology

[0002] There are many chargers in China now, but in terms of technology, most of the chargers used for UPS are not very high. Some UPSs use the well-known constant current charging method. Although this charging method is low in cost, The speed is also fast, but the battery is not really full, it is just a false full, when the charger is removed, the voltage will drop suddenly, which will do great damage to the battery, and some UPS use trickle charging , although this method can fully charge the battery, the charging speed is too slow to keep up with people's requirements for the charging rate; most of the inverters produced and used in China are square wave or sine wave inverters, such as XX The technology used by the -300 is the square wave inverter technology. If such an inverter supplies power to household appliances, especially computers and televisions, it will greatly damage the electrical components and cause the electrical appliances to run paralyzed. The output of the inverter is a square wave alternating current of poor quality, and its positive maximum value to negative maximum value are generated almost at the same time, thus causing severe unstable effects on the load and the power inverter itself, and its load capacity is poor , only 40-60% of the rated load, can not carry inductive loads (such as motors, fans, etc.), the third harmonic component contained in the square wave current will increase the capacitive current flowing into the load, and will damage the load in severe cases The power supply filter capacitor

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