PULSE SAMPLING BATTERY FUEL GAUGING AND RESISTANCE METERING METHOD AND MEANS

  • US 3,676,770 A
  • Filed: 05/15/1970
  • Issued: 07/11/1972
  • Est. Priority Date: 05/15/1970
  • Status: Expired due to Term
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First Claim
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1. A low dissipation system for detecting the internal resistance of a battery comprising:

  • a. means for switching through said battery a pulse of electrical energy with a regulated Ohm'"'"''"'"'s law related first parameter, said pulse of electrical energy defining a pulse state between adjacent ambient states;

    b. means for sensing a second Ohm'"'"''"'"'s law related parameter which is characteristic of the Ohm'"'"''"'"'s law response of said internal resistance of said battery to the first parameter of said pulse of electrical energy passing through said battery, said second parameter being representative of said battery'"'"''"'"'s internal resistance; and

    , c. sample and hold means for sampling and then holding during the ambient state between pulse states a signal representative of the second parameter response of said battery as sensed by said sensing means during a preceding pulse state.

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