Bag-like separator, electrode separator assembly, and method of producing electrode separator assembly

Abstract

Four sides of a rectangular bag-like separator 10 are composed of two adjacent separator thermo-bonding sides 10 a and 10 c where thermo-bonding portions are formed and of two adjacent insertion opening sides 10 b and 10 d forming one insertion opening 11 into which an electrode 30 can be inserted. A thermo-bonding section is formed in a portion of at least one of the insertion opening sides 10 b and 10 d.

1 . A rectangular bag-like separator produced in the form of a bag by thermo-bonding of peripheral portions of a resin film, wherein the rectangular bag-like separator defines four separator sides including two adjacent first and second bonding sides each including a bonding section therein, and two adjacent first and second insertion opening sides defining an insertion opening through which an electrode is allowed to be inserted,
 wherein said first insertion opening side has a bonding section therein, and said first insertion opening side is adjacent to said first bonding side, and   wherein said second bonding side has first and second bonding sections spaced from each other therein.   
     
     
         2 . The electrode separator assembly in accordance with  claim 1 , wherein a space between the first and the second bonding sections in the second bonding side is shorter than a longer side of the electrode which is in a rectangle shape. 
     
     
         3 . The electrode separator assembly in accordance with  claim 1 , wherein the first bonding section in the second bonding side defines a first opposing side that opposes the first insertion opening side, and the second bonding section in the second bonding side defines a second opposing side that opposes said first insertion opening side, and
 wherein the first opposing side of the first bonding section and the second opposing side of the second bonding section are formed so that a distance from the first insertion opening side is constant.   
     
     
         4 . The electrode separator assembly in accordance with  claim 1 , wherein the second bonding side has three or more bonding sections. 
     
     
         5 . The electrode separator assembly in accordance with  claim 3 , wherein the bonding section of the first insertion opening side defines a first opposing side that opposes the second bonding side, and a distance between the first opposing side of the bonding section in the first insertion opening side and the opposing side of the first bonding section in the second bonding side is wider than a shorter side of the electrode which is in a rectangle shape. 
     
     
         6 . The electrode separator assembly in accordance with  claim 1 , wherein the bonding section of the first insertion opening side defines a first side that opposes the second insertion opening side, and the bonding section of the first bonding side defines a second side that opposes the second insertion opening side,
 wherein the first side is located farther from the first bonding side than the second side.   
     
     
         7 . The electrode separator assembly in accordance with  claim 1 , wherein a distance from the first side to the second insertion opening side is within 50% to 99% of a whole length of the first insertion opening side.