Solar air conditioner system having functions of charging, control and automatic discharging

Abstract

The invention discloses a solar air conditioner system having functions of charging, control and automatic discharging. The solar air conditioner system comprises a solar cell, a solar controller, a storage battery and a variable frequency air conditioner, wherein the solar controller comprises a charging circuit, a control circuit, a lightning protection circuit and a discharging circuit, the variable frequency air conditioner comprises an inversion circuit and a compressor, the charging circuit comprises an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eleventh capacitor, a twelfth capacitor, a thirteenth metal oxide semiconductor (MOS) transistor and a fourteenth MOS transistor, and the discharging circuit comprises a forty-first switch, a forty-first relay, a forty-first resistor, a forty-second resistor, a forty-third resistor, a forty-fourth resistor, a forty-fifth discharge resistor and a forty-third electrolytic capacitor. By the solar air conditioner system, lightning can be effectively prevented, the safety performance of the system is improved, the activity of the storage battery can also be ensured during charging of the storage battery, the service lifetime of the storage battery can be prolonged, the charging efficiency of the storage battery can be improved, the power utilization time of the storage battery is prolonged, the solar air conditioner system has relatively high self-starting capability, an endless loop state is prevented, the discharge time can be greatly shortened, and the energy consumption of the system is saved.

Description

technical field [0001] The invention relates to the field of solar air conditioning, in particular to a solar air conditioning system with charging, control and automatic discharge. Background technique [0002] The solar air conditioning system is composed of solar cells, controllers, storage batteries and inverter air conditioners. The existing solar air-conditioning system has the following defects: the lightning protection measures of the controller are not effective, which affects the safety performance of the system; the capacity and self-discharge of multiple single batteries of the battery are inevitably inconsistent, which affects the life of the battery. [0003] In addition, when there are several consecutive rainy days, the power of the battery is not enough to maintain the work of the powered equipment, which will affect the normal operation of the powered equipment. To solve this problem, the capacity of the battery and solar panels can be increased , but the ...

AI Technical Summary

Problems solved by technology

The existing solar air-conditioning system has the following defects: the lightning protection measures of the controller are not effective, which affects the safety performance of the system; the capacity and self-discharge of multiple single batteries of the battery are inevitably inconsistent, which affects the life of the battery

Since the discharge resistor is directly connected in parallel to the capacitor, when the circuit is powered on and in working state, the discharge resistor is always in the discharge state, which consumes power energy and causes the circuit to heat up, especially in high-voltage systems where the power supply voltage is high and the resistance of the discharge resistor is relatively high. Large, the discharge time can range from a few minutes to more than ten minutes, which may cause safety hazards. For example, it is impossible to determine whether the device is completely discharged during inspection and maintenance. Therefore, in practical applications, the discharge time of the remaining power of the circuit is required to be as short as possible.

Appropriately reducing the resistance value of the discharge resistor can shorten the discharge time of the remaining power when the power is off, but the power consumption will increase

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