Global Patent Index - EP 1027745 A1

EP 1027745 A1 2000-08-16 - SEALED BATTERY AND METHOD OF OPERATION

Title (en)

SEALED BATTERY AND METHOD OF OPERATION

Title (de)

ABGEDICHTETE BATTERIE UND VERFAHREN ZU IHRER BENUTZUNG

Title (fr)

BATTERIE A BAC HERMETIQUE ET PROCEDE DE FONCTIONNEMENT

Publication

EP 1027745 A1 (EN)

Application

EP 98946048 A

Priority

  • US 9819023 W
  • US 5855797 P

Abstract (en)

[origin: WO9913523A1] A sealed rechargeable battery affords the advantages of both vented batteries and sealed batteries while avoiding the disadvantages of each. Power cells (12) constitute a rechargeable energy source. Regulator cells in the form of metal-hydride cells (18) operate in tandem with the power cells. A hydrophobic barrier separates the power cells from the metal-hydride cells, and prevents migration of water and electrolyte, but allows the migration of gases such as hydrogen and oxygen between the two sets of cells. A voltage stabilizer (14) monitors the metal-hydride cells via a programmed microprocessor (16). By detecting the direction and amount of current flowing through the metal-hydride cells, the voltage stabilizer monitors the operation of the power cells. When current flows in one direction, oxygen is produced by the power cells and absorbed or consumed by the metal-hydride cells. When current flows in the opposite direction, hydrogen is consumed. By applying certain voltages to the metal-hydride cells, the voltage stabilizer controls their operation to enhance the performance of the power cells.

IPC 1-7 (main, further and additional classification)

H01M 10/52; H01M 16/00

IPC 8 full level (invention and additional information)

H01M 10/48 (2006.01); H02J 7/00 (2006.01)

CPC (invention and additional information)

H01M 10/48 (2013.01); H02J 7/0011 (2013.01)

Citation (search report)

See references of WO 9913523A1

Designated contracting state (EPC)

DE ES FR GB IT NL SE

EPO simple patent family

WO 9913523 A1 19990318; AU 9315098 A 19990329; EP 1027745 A1 20000816

INPADOC legal status


2004-11-10 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20031001

2000-08-16 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000311

2000-08-16 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT NL SE