The invention discloses a large-power UPS (uninterrupted power supply) special air-conditioner battery cabinet and a method for adjusting and controlling the 
working temperature of a storage battery, aiming at solving the problems of 
refrigeration when the mains power is abnormal and the storage battery discharges to generate a large amount of heat and 
high energy consumption of the precise air conditioner of the existing storage 
battery room. The large-power UPS special air-conditioner battery cabinet comprises a phase-change air conditioner and a constant-temperature battery box, wherein the phase-change air conditioner comprises a phase-change material box, a 
heat exchanger and a control box, and also comprises a fan, an air duct and an 
evaporator in the constant-temperature battery box; the phase-change material box is filled with a phase-change material and is provided with fin tubes, another 
evaporator and a temperature sensor; the control box is connected with the phase-change material box and is internally provided with a water pump, a condenser, a controller, a compressor and an uninterrupted power supply. The large-power UPS special air-conditioner battery cabinet and the method for adjusting and controlling the 
working temperature of the storage battery disclosed by the invention are applicable to protection of storage batteries in a large-power UPS in a 
machine room and have the advantages that the temperature in the constant-temperature battery box can be still controlled in the optimum 
working temperature of the storage batteries with large refrigerating capacity and long time after the power fails, the reliability of the storage batteries is improved, the service life of the storage batteries is prolonged, the purposes of 
energy conservation and 
environmental protection are achieved and the reliability is high.