公开(公告)号：CA2663334A1

公开(公告)日：2009-10-18

申请号：CA2663334

申请日：2009-04-20

Applicant: RAILPOWER TECHNOLOGIES CORP

Inventor： ST-JACQUES ALAIN

IPC: H02J7/00

Abstract: A system and method of dynamically equalizing battery voltages with low inherent power losses in a string of series connected electrochemical batteries is disclosed. The method includes steps of charging/discharging a group of batteries using magnetic storage in a transformer with bipolar magnetic excursion, individually isolated circuits and pulsed energy transfer. A method of exchanging current between batteries using direct current transfer between them and limiting inductance is also disclosed. Using this method, battery voltage may be measured from a n isolated circuit, thus enabling information transfer to a central monitoring system. The method also has the benefit of providing an estimation of battery intern al resistance from isolated circuits in the series of batteries.

公开(公告)号：CA2663334C

公开(公告)日：2015-11-24

申请号：CA2663334

申请日：2009-04-20

Applicant: RAILPOWER TECHNOLOGIES CORP

Inventor： ST-JACQUES ALAIN

IPC: H02J7/00

Abstract: A system and method of dynamically equalizing battery voltages with low inherent power losses in a string of series connected electrochemical batteries is disclosed. The method includes steps of charging/discharging a group of batteries using magnetic storage in a transformer with bipolar magnetic excursion, individually isolated circuits and pulsed energy transfer. A method of exchanging current between batteries using direct current transfer between them and limiting inductance is also disclosed. Using this method, battery voltage may be measured from an isolated circuit, thus enabling information transfer to a central monitoring system. The method also has the benefit of providing an estimation of battery internal resistance from isolated circuits in the series of batteries.