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Lithium ion fast pulse charger

  • US 6,040,684 A
  • Filed: 06/30/1997
  • Issued: 03/21/2000
  • Est. Priority Date: 06/30/1997
  • Status: Expired due to Term
First Claim
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1. A method of charging a battery implemented in a battery technology which has an electrochemically-determined maximum threshold voltage which must not be exceeded, comprising the steps of:

  • (a.) applying intermittent current pulses to said battery, to intermittently produce a voltage at external terminals of said battery which is greater than said threshold voltage; and

    (b.) thereafter operating a pass transistor as a linear regulator element to apply a clamped voltage to said battery which is approximately equal to said threshold voltage, wherein said pass transistor is integrated in a single package with said battery.

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