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Method and apparatus for charging a battery

  • US 4,396,880 A
  • Filed: 06/05/1981
  • Issued: 08/02/1983
  • Est. Priority Date: 06/05/1981
  • Status: Expired due to Term
First Claim
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1. A method of charging a battery comprising the steps of (a) testing said battery by supplying energy thereto and measuring the voltage thereacross, and deriving therefrom the dynamic voltage-current characteristic of said battery as a function of the charge condition thereof;

  • (b) charging said battery by supplying a gradually varying voltage thereto, substantially without controlling the current supplied to said battery, for a predetermined time, the rate at which said supplied voltage varies being related to said dynamic voltage-current characteristic obtained in step (a); and

    (c) repeating steps (a) and (b) alternately until the dynamic voltage-current characteristic last obtained is substantially identical to the preceding dynamic voltage-current characteristic, whereupon the charging of said battery is terminated.

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