To provide a compact storage battery monitoring system which can accurately and inexpensively determine degradation of a storage battery.
The storage battery monitoring system includes; an uninterruptible power supply device which is connected with a commercial power source and a storage battery group consisting of a plurality of storage batteries, and applies an electric power to a load facility; and a storage battery monitoring device for monitoring a state of the storage battery group, wherein a control section of the uninterruptible power supply device is connected with a control section of the storage battery monitoring device so as to be able to communicate with each other. When the degradation of a battery is determined, respective control sections of the devices cooperate such that discharge current flows from the storage battery group to the uninterruptible power supply device, and at least one of a voltage and current of the battery is measured, and the degradation state of the battery is determined, thereby providing the compact and inexpensive storage battery monitoring system which can determine the degradation of the battery accurately.
COPYRIGHT: (C)2010,JPO&INPIT
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Hideaki Kunisada
Hiroaki Miyata
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