Patent · US Expired

System and method for maintenance charging of battery cells

US6194874A · kind A · utility

23Cited by

15References

31Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Sarandis Kalogeropoulos · Mendrisio, CH
Richard Andersson · Danderyd, SE
Johan Mercke · Lund, SE
Charles Forsberg
Magnus Hansson · Lund, SE
Heino Wendelrup · Malmö, SE
Mats Wolf · Södra Sandby, SE
Kristoffer Ptasinski · Lund, SE

Key dates

Filing date	Sep 15, 1999
Grant date	Feb 27, 2001
Priority date	—
Expiry date	Sep 15, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH02J7/0071
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and apparatus for maintenance charging a battery is disclosed. A battery is fully charged using conventional CC-CV techniques and subsequently is maintenance charged by applying a first maintenance voltage to the battery for a first predetermined time period. If desired, a second maintenance voltage may be applied to the battery for a second predetermined time period. An apparatus for maintenance charging a battery utilizes a timer and a charge controller to apply a maintenance voltage to a battery for a predetermined time period.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.