DIRECT-CURRENT UNINTERRUPTIBLE POWER SUPPLY UNIT

• Main Authors: OKAMOTO SEIICHI, SHIGEMOTO RIYOUJI, HATABE MASANORI, MATSUMOTO ATSUO
• Format: Patent
• Language: English
• Published: 30.06.2005
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY

PROBLEM TO BE SOLVED: To provide a direct-current uninterruptible power supply unit that supplies direct-current backup power when a power supply trouble occurs in a load device that operates on direct-current power. SOLUTION: Battery packs 2 formed by connecting a plurality of secondary batteries 10 in series so that a voltage required by a load device A can be obtained are detachably placed in an enclosure. The outputs of the individual battery packs 2 are regulated to a predetermined voltage and connected in parallel through a discharge control unit 4, and are connected to the power supply line to the load device A. The battery packs 2 are connected to a power supply management unit 3 through information transmission lines, and thus their charging and discharging are controlled and their lives are determined. As a result, only battery packs 2 whose lives are judged to have ended can be removed and replaced with new ones. COPYRIGHT: (C)2005,JPO&NCIPI