The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2024
Filed:
Mar. 20, 2023
Eaton Intelligent Power Limited, Dublin, IE;
Heyi Xu, Shenzhen, CN;
Kaixin Chen, Shenzhen, CN;
Eaton Intelligent Power Limited, Dublin, IE;
Abstract
An offline uninterruptible power supply (UPS) is provided, including: a transformer, configured to output a utility power voltage to a load; a bidirectional converter, configured to convert alternating current from the transformer into direct current to charge a rechargeable battery, and convert direct current from the rechargeable battery into alternating current to be outputted to the transformer; and a control unit, configured to control operation of the offline UPS, where when the utility power voltage is within a normal range and the rechargeable battery is fully charged, the offline UPS enters a design of energy (DOE) mode, in the DOE mode, the transformer and the bidirectional converter are turned off, and in the DOE mode, the control unit is configured to detect a voltage of the rechargeable battery, and calculate a slope of decrease in the voltage of the rechargeable battery, and when the slope of decrease in the voltage is greater than a preset first threshold, the control unit controls the offline UPS to delete the DOE mode.