# US 2008/0185913 A1 · Power feeding system

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- Number: US 2008/0185913 A1
- Document ID: US20080185913A1
- Status: Published application
- Kind: A1
- Application number: 12/017,188
- Filed: 2008-01-21
- Published: 2008-08-07
- Earliest claimed: 2007-02-06
- Assignees: Disco Corporation
- Inventors: Kazuma Sekiya
- Web page: https://patentgrep.com/patent/US20080185913A1

## CPC

- H02J 9/061: {for DC powered loads}
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

## Abstract

A power feeding system which includes an apparatus including a plurality of movable sections supplied with direct current power for operation; and a commercial power source and an auxiliary power source device for supplying electric power to the apparatus. The auxiliary power source device includes an AC/DC converter for converting alternating current power of the commercial power source into direct current power; a storage section for storing the direct current power outputted from the AC/DC converter; a power storage control section for discharging the direct current power stored in the storage means; and a power-feeding control section for supplying, to the movable sections, the direct current power outputted from the AC/DC converter or discharged from the storage section.

## Claims

### Claim 1

A power feeding system comprising:
an apparatus including a plurality of movable sections supplied with direct current power for operation; and
a commercial power source and an auxiliary power source device for supplying electric power to the apparatus;
wherein the auxiliary power source device includes
an AC/DC converter for converting alternating current power of the commercial power source into direct current power,
storage means for storing the direct current power outputted from the AC/DC converter,
power storage control means for discharging the direct current power stored in the storage means, and
power-feeding control means for supplying, to the movable sections, the direct current power outputted from the AC/DC converter or discharged from the storage means.

### Claim 2 (depends on 1)

The power feeding system according to claim 1, wherein the storage means dividedly outputs direct current power associated with each of the plurality of movable sections having respective operating power sources different from each other.

### Claim 3 (depends on 1)

The power feeding system according to claim 1, wherein the storage control means has a function that detects a shortage of electric power needed for operation of the movable sections and causes the storage means to discharge electric power to compensate for the shortage with the electric power discharged.