Global Patent Index - EP 1018179 A1

EP 1018179 A1 2000-07-12 - PRESSURE SYSTEM AND METHOD FOR RECHARGEABLE THIN-FILM ELECTROCHEMICAL CELLS

Title (en)

PRESSURE SYSTEM AND METHOD FOR RECHARGEABLE THIN-FILM ELECTROCHEMICAL CELLS

Title (de)

DRUCKSYSTEM UND VERFAHREN ZUM ZUSAMMENDRÜCKEN AUFLADBARER ELEKTROCHEMISCHER ZELLEN

Title (fr)

DISPOSITIF ET PROCEDE DE PRESSION POUR PILES ELECTROCHIMIQUES RECHARGEABLES A COUCHE MINCE

Publication

EP 1018179 A1 (EN)

Application

EP 98937042 A

Priority

  • US 9815296 W
  • US 90042997 A

Abstract (en)

[origin: WO9905743A1] An apparatus and method for improving the performance of rechargeable thin-film electrochemical cells is disclosed. The pressure apparatus maintains an electrochemical cell or a grouping of electrochemical cells in a state of compression during charge and discharge cycling of the cells. The pressure apparatus may be implemented external to a cell or grouping of cells, or internally within one or more cells. An elastomeric or metallic spring element may be incorporated into the structure of an electrochemical cell to place the cell in a state of compression. An external pressure apparatus may include one or more bands and a pair of thrust plates which cooperate to maintain a grouping of cells in compression during cell cycling. One or both of the thrust plates may include a number of individual springs, such as coil, wave, or Belleville springs. The band may incorporate an integral spring, such as a wave or sine-shaped spring, that produces a tensile force in the band which pulls the thrusts plates and cells together. Elastomeric or metallic flat springs may be inserted between all or selected cells to generate compressive forces within a grouping of cells. An enclosure containing the grouping of cells may be gas-pressurized to place the cells in compression.

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

H01M 10/04; H01M 2/10

IPC 8 full level (invention and additional information)

H01M 2/10 (2006.01); H01M 10/04 (2006.01); H01M 10/40 (2006.01); H01M 2/20 (2006.01); H01M 4/70 (2006.01); H01M 6/18 (2006.01); H01M 6/42 (2006.01); H01M 10/34 (2006.01); H01M 10/50 (2006.01)

CPC (invention and additional information)

H01M 10/0468 (2013.01); H01M 2/1061 (2013.01); H01M 10/0413 (2013.01); H01M 10/0436 (2013.01); H01M 10/647 (2015.04); H01M 10/6553 (2013.01); H01M 2/20 (2013.01); H01M 4/70 (2013.01); H01M 6/181 (2013.01); H01M 6/42 (2013.01); H01M 10/345 (2013.01); H01M 10/653 (2015.04)

Citation (search report)

See references of WO 9905743A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 9905743 A1 19990204; AU 8584098 A 19990216; CA 2306482 A1 19990204; EP 1018179 A1 20000712; JP 2001511592 A 20010814

INPADOC legal status


2002-03-06 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20010810

2001-05-16 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010330

2000-12-06 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION

- Owner name: HYDRO QUEBEC

2000-07-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000225

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT