Title:
UNINTERRUPTIBLE POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2021164335
Kind Code:
A
Abstract:
To provide means for detecting power failures instantaneously and reliably in an uninterruptible power supply device, and to achieve this at a low cost.SOLUTION: Power failure detection means is configured to include a voltage detection unit 11, which detects a potential difference between the two sides of a first rectifying element 7 and a power failure determination unit that determines the state of power failure on the basis of the potential difference detected by the voltage detection unit 11. The power failure determination unit is configured to determine that it is a power failure when a voltage on the secondary battery 1 side of the first rectifier element 11 is higher than a voltage on the load device 21 side.SELECTED DRAWING: Figure 1
Inventors:
KUSAGAYA YUSUKE
Application Number:
JP2020065991A
Publication Date:
October 11, 2021
Filing Date:
April 01, 2020
Export Citation:
Assignee:
FDK CORP
International Classes:
H02J9/06; H01M10/44; H01M10/48; H02J7/34
Attorney, Agent or Firm:
Koji Nagato