Method and apparatus for charging a secondary battery by supplyi

Details Method and apparatus for charging a secondary battery by supplyi Method and apparatus for charging a secondary battery by supplyi

1993-04-20

1997-03-25

Nappi, Robert

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 21, H01M 1044

Patent

active

056148054

ABSTRACT:
In a method for charging a secondary battery having a positive electrode, a negative electrode, and an electrolyte, a pulsed current is supplied to the secondary battery to make the pulsed current flow between the positive electrode and the negative electrode through the electrolyte to thereby charge the secondary battery. The pulsed current comprises positive pulse current which has a positive pulse amplitude corresponding to a first current density of 1 .mu.A/cm.sup.2 to 100 mA/cm.sup.2 in the positive electrode. However, the pulsed current may include a negative pulse current following after each positive pulse and having a negative amplitude corresponding to a second current density not greater than a quarter of the first current density.

REFERENCES:
patent: 3963976 (1976-06-01), Clark
patent: 4645996 (1987-02-01), Toops
patent: 4661759 (1987-04-01), Klein
patent: 4730153 (1988-03-01), Breting et al.
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patent: 4878007 (1989-10-01), Gabor et al.
patent: 4947124 (1990-08-01), Hauser
patent: 5344723 (1994-09-01), Bronoel et al.
patent: 5354617 (1994-10-01), Ikkanzaka et al.

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