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US 10,097,036 B2Granted
Uninterruptible power source device
AssigneeFdk Corporation
InventorsTakuya Harada, Takashi Kabasawa, Jinichi Sakamoto
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AssigneeFdk Corporation
InventorsTakuya Harada, Takashi Kabasawa, Jinichi Sakamoto
Estimating the term…
An uninterruptible power source device 10 in the present invention includes: an input-output terminal 11 that is connected in parallel with a power source line 21 through which electric power is supplied from an external power source 20 to a loading device 30; a battery unit 12 whose rated voltage is lower than a voltage V1 of the external power source 20; a DC/DC converter 13 that converts a voltage V2 of the battery unit 12 into a voltage V3 equivalent to a difference between the voltage V1 of the external power source 20 and the voltage V2 of the battery unit 12; a charging circuit 14 that charges the battery unit 12 through the input-output terminal 11 with the electric power of the external power source 20; and a discharging circuit 15 that performs discharge to the loading device 30 through the input-output terminal 11 at a voltage resulting from adding an output voltage V3 of the DC/DC converter 13 to the voltage V2 of the battery unit 12, at the time of electric power interruption of the external power source 20.
An uninterruptible power source device comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
With automatic change-over , e.g. UPS systems: for DC powered loads
Circuit arrangements for charging or discharging batteries or for supplying loads from batteries: battery or charger load switching, e.g.…
Details of circuit arrangements for charging or discharging batteries or supplying loads from batteries: charging or discharging characterised by…
Power supply and charging
About 8 years 7 months of term left · ends 21 May 2035 (estimated)
The present invention relates to an uninterruptible power source device.
An uninterruptible power source device is a power source device that supplies electric power from a previously charged secondary battery to a loading device for continuing the operation of the loading device, in a state in which electric power is not supplied from an external power source to the loading device due to electric power interruption or the like. The secondary battery of the uninterruptible power source device is generally charged with the electric power of the external power source, at normal times. As an example of the secondary battery that is used in the uninterruptible power source device, an alkaline secondary battery such as a nickel-hydrogen secondary battery is publicly known, for example.
The alkaline secondary battery, from its nature, needs to be charged at a voltage that is higher than the rated voltage. However, generally, in the uninterruptible power source device, the rated voltage of the alkaline secondary battery is the same as the voltage of the external power source. Therefore, at that voltage, the alkaline secondary battery cannot be charged to a full-charge state, with the electric power of the external power source.
FIG. 1 is a circuit diagram illustrating the configuration of an uninterruptible power source device.
FIG. 2 is a circuit diagram illustrating a main part of the uninterruptible power source device at normal times.
FIG. 3 is a circuit diagram illustrating the main part of the uninterruptible power source device at the time of electric power interruption.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Needless to say, the present invention is not particularly limited to the embodiments described below, and various modifications can be made within the range of the invention described in CLAIMS.
<Configuration of Uninterruptible Power Source Device 10>