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Data center battery enhancement method and system

  • US 9,252,631 B2
  • Filed: 06/08/2012
  • Issued: 02/02/2016
  • Est. Priority Date: 06/08/2011
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • providing a plurality of battery groups each having a nominal voltage rating, the power output of each battery group wired for electrical connection to an uninterruptible power supply (UPS) through a microprocessor-controlled power switch, and the voltage level of the power output of each battery group being monitored by the microprocessor through a voltage sensing circuit;

    electrically connecting the power output of a first battery group and a second battery group to the UPS by use of microprocessor control;

    monitoring, by the microprocessor, the output voltage of the first battery group and the second battery group; and

    when the monitored output voltage of the first battery group falls below a predetermined level,electrically disconnecting from the UPS by microprocessor control the first battery group and electrically connecting to the UPS by microprocessor control the power output of another of the plurality of battery groups in view of the monitored output voltage of the first battery group approaching a value corresponding to Peukert'"'"'s Number n, wherein C=InT is Peukert'"'"'s Equation, wherein C is the theoretical capacity of a battery expressed in amp-hours, I is the current, and T is time, andreconnecting the first battery group to the UPS by microprocessor control after a time period equal to or greater than necessary to permit the output voltage of the first battery group to recover to about its nominal voltage rating in view of the monitored output voltage of the first battery group approaching a value corresponding to Peukert'"'"'s Number n.

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