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:
Feb. 23, 2010
Filed:
Jun. 29, 2006
Brian P Heber, Delaware, OH (US);
Kevin Eschhofen, Lewis Center, OH (US);
Mohammad Nanda Marwali, Lewis Center, OH (US);
Terry D Bush, Westerville, OH (US);
Brian P Heber, Delaware, OH (US);
Kevin Eschhofen, Lewis Center, OH (US);
Mohammad Nanda Marwali, Lewis Center, OH (US);
Terry D Bush, Westerville, OH (US);
Liebert Corporation, Columbus, OH (US);
Abstract
An uninterruptible power supply (UPS) includes a plurality of UPS modules. Each of the UPS modules has a battery that provides power to a protected load in the event of a utility power failure. A plurality of controllers control how much power each of the batteries deliver to the protected load, and a communication bus allows the controllers to exchange information about the battery voltages. One of the controllers calculates the average battery voltage of the plurality of batteries and adjusts the amount of energy provided by an individual battery such that the battery voltage is about equal to the average battery voltage.