Uninterruptible power supply device

1. An uninterruptible power supply device comprising:

a housing having a rectangular parallelepiped shape;

a plurality of units vertically stacked and housed in the housing; and

a fan unit including a plurality of fans aligned on an upper surface of the housing,

wherein

each of the upper surface and a lower surface of the housing is formed with an opening through which a wire is led into the housing, wherein

the plurality of units includes:

a plurality of uninterruptible power supply units; and

a terminal unit for connecting the plurality of uninterruptible power supply units in parallel between an alternating-current (AC) power supply and a load, wherein

when the wire is led through the opening located on the upper surface of the housing, the terminal unit is located above the plurality of uninterruptible power supply units, and

the wire is connected to the terminal unit via the opening.

2. The uninterruptible power supply device according to claim 1 , wherein

each of the plurality of uninterruptible power supply units includes:

a converter that converts a first AC power supplied from the AC power supply into a direct-current (DC) power; and

an inverter that:

converts the DC power generated by the converter into a second AC power and supplies the second AC power to the load in a normal state in which the AC power supply supplies the first AC power, and

converts the DC power stored in an electrical storage device into the second AC power and supplies the second AC power to the load upon an occurrence of a power failure in which supply of the first AC power from the AC power supply is stopped.

3. The uninterruptible power supply device according to claim 1 , wherein

each of the plurality of uninterruptible power supply units has

a front surface and a rear surface that are formed with vents, and

a fan for air intake from the front surface and air discharge from the rear surface.

4. An uninterruptible power supply device comprising:

a housing having a rectangular parallelepiped shape;

a plurality of units vertically stacked and housed in the housing; and

a fan unit including a plurality of fans aligned on an upper surface of the housing, wherein

each of the upper surface and a lower surface of the housing is formed with an opening through which a wire is led into the housing, wherein

the plurality of units includes:

a plurality of uninterruptible power supply units; and

a terminal unit for connecting the plurality of uninterruptible power supply units in parallel between an alternating-current (AC) power supply and a load, wherein

when the wire is led through the opening located on the lower surface of the housing, the terminal unit is located below the plurality of uninterruptible power supply units, and

the wire is connected to the terminal unit via the opening.

5. The uninterruptible power supply device according to claim 4 , wherein each of the plurality of uninterruptible power supply units includes:

a converter that converts a first AC power supplied from the AC power supply into a direct-current (DC) power; and

an inverter that:

converts the DC power generated by the converter into a second AC power and supplies the second AC power to the load in a normal state in which the AC power supply supplies the first AC power, and

converts the DC power stored in an electrical storage device into the second AC power and supplies the second AC power to the load upon an occurrence of a power failure in which supply of the first AC power from the AC power supply is stopped.

6. The uninterruptible power supply device according to claim 4 , wherein

each of the plurality of uninterruptible power supply units has

a front surface and a rear surface that are formed with vents, and

a fan for air intake from the front surface and air discharge from the rear surface.