Battery charging method and apparatus,申请号US19940185344-传众专利搜索

Battery charging method and apparatus

申请公布号：US5550453(A)

申请号：US19940185344

申请日期：1994.01.24

申请公布日期：1996.08.27

申请人：

MOTOROLA, INC.

发明人：BOHNE, WILLIAM C.;BERGQUIST, ERIC A.

分类号：H02J7/04;H01M10/44;H02J7/00;(IPC1-7):H01M10/44

主分类号：H02J7/04

摘要：In a method and apparatus for battery charging, a battery charger (20) charges a battery (11), preferably in a battery pack (10), by providing an initial battery charging current (I1) and terminating the initial charging current at a time t2 in response to a measured battery condition (for example, battery temperature rate of change; Delta T/Delta t) exceeding a limit. A battery parameter, preferably battery voltage, is measured at the time t2 and stored as a limit (Vpeak). After t2, battery charging current is provided in accordance with a predetermined criteria and battery charging current is altered (to I3; or to I1) in response to comparing a measured battery parameter, preferably battery voltage, after t2 to a threshold (Vpeak; or Vpeak-Delta V) based on the stored limit (Vpeak). Preferably, rapid battery charging is implemented in response to a comparison of a measured battery parameter, preferably battery voltage, after the time t2 with respect to a threshold (Vpeak-Delta V) determined in accordance with the stored limit (Vpeak).