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Battery operating system

  • US 6,025,695 A
  • Filed: 05/29/1998
  • Issued: 02/15/2000
  • Est. Priority Date: 07/09/1997
  • Status: Expired due to Fees
First Claim
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1. A battery pack comprising:

  • terminal means for connecting the battery pack to a battery powered device;

    a battery including at least one rechargeable battery cell connected to the terminal means, said battery havingi) a discharging state for supplying electrical power to the battery powered device, andii) a charging state for receiving electrical power from the terminal means;

    sensing means to generate analog signals representing battery parameters;

    an analog-to-digital converter connected to the sensing means for receiving the analog signals therefrom, the analog-to-digital converter havingi) an abled state for converting said analog signals to digital data values representing the battery parameters,ii) a disabled state wherein said conversions are not performed;

    a processor connected to the analog-to-digital converter to receive the digital data values therefrom, the processor having a defined operating cycle during which a series of routines are performed using said digital data values; and

    means to start the operating cycle at a defined frequency;

    the processor includingi) means identifying a given number,ii) means to count the number of times the operating cycle is started,iii) means to compare said count with said given number, andiv) means to switch the analog-to-digital converter from the disabled state to the abled state when said count equals said given number.

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