Global Patent Index - EP 1243038 A1

EP 1243038 A1 2002-09-25 - MULTI-LAYER ELECTROCHEMICAL CELL DEVICES

Title (en)

MULTI-LAYER ELECTROCHEMICAL CELL DEVICES

Title (de)

VIELSCHICHTIGE ELEKTROCHEMISCHE ZELLE

Title (fr)

DISPOSITIFS DE PILE ELECTROCHIMIQUE MULTICOUCHE

Publication

EP 1243038 A1 (EN)

Application

EP 00963568 A

Priority

  • US 0025511 W
  • US 44763999 A

Abstract (en)

[origin: WO0139296A1] A laminated multi-layer electrochemical cell device structure comprising positive and negative electrode layer members of polymeric matrix composition having a microporous polyolefin membrane separator member interposed therebetween wherein the separator membrane includes a polymer coating layer. The separator is further treated to provide a deposited coating of a primary plasticizer for the polymer coating layer. The device electrode and separator members are then assembled and laminated at a compressive force and temperature at which the plasticizer film softens the polymer coating of the separator member sufficiently to establish a strong interfacial bond with the matrix polymers of the electrode members and thereby form a laminated unitary cell structure. In another embodiment, the primary plasticizer comprises a component of the electrode polymeric matrix compositions. In either embodiment, the plasticizer subsequently volatilizes from the structure to further strengthen the interfacial bond, yet its temporary presence in the interfacial region of the multi-layer cell structure enables lamination of the cell members at a temperature below the pore-collapse temperature of the separator membrane, thereby preserving the thermal shut-down protection feature of the microporous separator.

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

H01M 2/16

IPC 8 full level (invention and additional information)

H01G 9/058 (2006.01); H01G 9/02 (2006.01); H01G 9/155 (2006.01); H01M 2/16 (2006.01); H01M 10/052 (2010.01); H01M 10/0585 (2010.01); H01M 10/36 (2010.01); H01M 4/62 (2006.01); H01M 4/74 (2006.01); H01M 6/40 (2006.01); H01M 10/0525 (2010.01)

CPC (invention and additional information)

H01M 10/052 (2013.01); H01M 2/164 (2013.01); H01M 2/1686 (2013.01); H01M 4/623 (2013.01); H01M 4/745 (2013.01); H01M 10/0585 (2013.01); H01M 6/40 (2013.01); H01M 10/0525 (2013.01)

Citation (search report)

See references of WO 0139296A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0139296 A1 20010531; AU 7496200 A 20010604; CA 2391167 A1 20010531; CN 1399801 A 20030226; EP 1243038 A1 20020925; JP 2003515891 A 20030507; TW 475289 B 20020201

INPADOC legal status


2009-04-24 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1049919

2006-11-08 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20060401

2002-09-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020517

2002-09-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE