公开(公告)号：US3622392A

公开(公告)日：1971-11-23

申请号：US3622392D

申请日：1968-11-01

Applicant: ESB INC

Inventor： LARSEN DUANE M ,  TERLECKE MARK J

IPC: H01M4/60 ,  H01M10/38 ,  H01M43/02

CPC classification number: H01M10/38 ,  H01M4/60

Abstract: A cell having an outward appearance similar to a conventional primary LeClanche cell but having certain internal structural features that render the cell rechargeable, including an organic depolarizer, insulating means about the portion of the carbon rod located in the cell airspace, laminated separator means about substantially the entire inner wall of the negative electrode can, laminated insulating means along the interior bottom of the negative electrode can, and a vent washer located on top of the cell sealant enabling gases formed in the cell interior to escape to the atmosphere. A one-piece plastic closure has also been developed which eliminates the need for the cell sealant and serves as an insulator about the portion of the carbon rod locatd in the airspace as well as incorporating means to vent gases from the cell, thereby eliminating the separate vent washer.

公开(公告)号：US3888700A

公开(公告)日：1975-06-10

申请号：US77277568

申请日：1968-11-01

Applicant: ESB INC

Inventor： LARSEN DUANE M

IPC: H01M2/16 ,  H01M6/22 ,  H01M3/02

CPC classification number: H01M2/1653 ,  H01M6/22 ,  Y10T29/53135 ,  Y10T29/53139

Abstract: An absorbent separator for an electric battery which comprises an elastomeric resin binder material (e.g. vinyl acetate-ethylene copolymer) blended with a gelling agent (e.g. starch, flour) which absorbs the battery electrolyte and immobilizes it in contact with the anode surface. This absorbent separator swells as it absorbs the battery electrolyte which improves the conductivity and helps to avoid selective corrosion of the anode surface. The absorbent separator, which may be self-supporting, has sufficient strength for use with automatic battery manufacturing machinery. When used in conventional Le Clanche primary batteries, these absorbent separators hold the battery discharge product in place and thereby help to prevent battery leakage.

公开(公告)号：US3573106A

公开(公告)日：1971-03-30

申请号：US3573106D

申请日：1968-11-01

Applicant: ESB INC

Inventor： JOHNSON MARTIN H ,  LARSEN DUANE M ,  SAXE CARROL G

IPC: H01M2/14 ,  H01M2/16 ,  H01M10/36 ,  H01M3/02

CPC classification number: H01M2/1686 ,  H01M2/14 ,  H01M2/1653 ,  H01M10/36

Abstract: AN ELECTRIC BATTERY HAVING A LAMINATED SEMIPERMEABLE BARRIER/ABSORBENT SEPARATOR TO PROVIDE IMPROVED CYCLE LIFE AND/OR IMPROVED HIGH TEMPERATURE AND LONG DURATION STORAGE CAPABILITY. THE BATTERY EMPLOYS A CATHODE MATERIAL WHICH IS APPRECIABLY SOLUBLE IN THE ELECTROLYTE, AND THE SEPARATOR IS POSITIONED IN SUCH A MANNER THAT THE SEMIPERMEABLE BARRIER (E.G. CELLOPHANE) IS IN CONTACT WITH THE CATHODE MATERIAL AND THE ABSORBENT MATERIAL IS IN CONTACT WITH THE ANODE. THE ABSORBENT MATERIAL IS SPECIALLY PREPARED FROM A VINYL ACETATE-ETHYLENE COPOLYMER BINDER MATERIAL BLENDED WITH A GELLING AGENT (E.G. STARCH AND FLOUR). THE BARRIER MATERIAL PREVENTS CATHODE ACTIVE MATERIAL FROM MIGRATING TO THE ANODE, AND THE ABSORBENT MATERIAL ABSORBS THE BATTERY ELECTROLYTE AND IMMOBILIZES IT IN CONTACT WITH THE ANODE SURFACE.