Back to results
US 4,539,274 AGranted
Electrochemical cell having wound electrode structures
AssigneeGTE Government Systems Corporation
InventorFranz Goebel
Life of this patent
Estimating the term…
Abstract
Electrochemical cell having a battery stack of an electrode assembly wound on a spool. The electrode assembly includes two elongated electrode structures, an anode electrode structure and a cathode current collector structure. The spool has a central post of insulating material and two conductive flanges. The two electrode structures are wound around the post with insulating material between them, the anode electrode structure making contact with one of the flanges and the cathode current collector structure making contact with the other flange.
Claims13
An electrochemical cell comprising
- a housing;
- a battery stack within said housing including
- a first contact member of conductive material having a contact surface;
- a second contact member of conductive material having a contact surface;
- a post extending between said first and second contact members supporting said contact members in fixed relationship with respect to each other with said first and second contact members electrically insulated from each other;
- a first electrode structure;
- a second electrode structure;
- said first and second electrode structures being wound around said post and being electrically insulated from each other;
- said first electrode structure being in physical and electrical contact with said contact surface of the first contact member and being electrically insulated from the second contact member;
- said second electrode structure being in physical and electrical contact with said contact surface of the second contact member and being electrically insulated from the first contact member;
- an electrolyte within said housing in contact with the first and second electrode structures;
- and
- first and second terminal means connected to the first and second contact members, respectively.
10 more elements
An electrochemical cell comprising
- a housing of a hollow, cylindrical metal case having an opening at one end thereof and a cover therefor, said cover having a metal electrical terminal extending therethrough into the housing;
- an electrochemical system within the housing including an electrolytic solution and a battery stack exposed to the electrolytic solution;
- said battery stack including
- a spool having a first flange of conductive material, a second flange of conductive material, and a central post supporting said first and second flanges in fixed relationship with respect to each other with said first and second flanges electrically insulated from each other;
- said first and second flanges having contact surfaces facing each other in spaced apart relationship and parallel to each other;
- an electrode assembly of an elongated first electrode structure, an elongated second electrode structure, and porous insulating material separating said first and second electrode structures;
- said first electrode structure including an elongated conductive substrate having contact elements along the length thereof at one edge;
- said second electrode structure including an elongated conductive substrate having contact elements along the length thereof at one edge;
- said electrode assembly being wound around said post with said first and second electrode structures forming alternate layers separated by porous insulating material;
- said contact elements of said first electrode structure being in contact with said contact surface of the first flange and said second contact elements of said second electrode structure being in contact with said contact surface of the second flange;
- said first flange being electrically connected to said metal electrical terminal and said second flange being electrically connected to said metal case which serves as an external electrical terminal.
8 more elements
Dependencies are inferred from the claim text.