Battery and method of manufacturing battery

Abstract

The present invention maintains a power generating element in a flat shape as far as possible to thereby improve workability in a manufacturing process. In a battery including a power generating element formed into a flat shape and housed in a container, the power generating element formed by winding a foil-shaped positive electrode plate 24 a and a foil-shaped negative electrode plate 24 b , with separator 25 sandwiched therebetween, about a winding core 21 having flexibility, a thin-plate-shaped member TP having higher rigidity than the winding core is attached to at least one of opposite end portions in a direction of a winding axis of the

1 - 11 . (canceled) 
     
     
         12 . A battery comprising:
 a power generating element having a flattend shape and housed in a container, the power generating element comprising a positive electrode plate and a negative electrode plate, which are wound with a separator sandwiched therebetween, and a winding core having a flattened shape;   a metal plate-shaped member attached to at least one of opposite end portions in a direction of a winding axis of the winding core; and   a current collector disposed outside the power generating element, the current collector comprising a connection plate being attached to the power generating element,   wherein the power generating element comprises a non-coating portion not applied with an active material being formed at one of end portions in a width direction of at least one of the positive electrode plate and the negative electrode plate,   the non-coating portion is in the state of protruding in the direction of the winding axis from the separator, and   the current collector, the non-coating portion, and the metal plate-shaped member are fixed while the non-coating portion is sandwiched between the connection plate of the current collector and the metal plate-shaped member.   
     
     
         13 . The battery according to  claim 12 , wherein
 the current collector comprises a first plate and a second plate, a cross-section of the first and second plates, taken along a winding axis of the winding core, being an L-shape, and   the second plate of the current collector comprises the connection plate.   
     
     
         14 . The battery according to  claim 13 , wherein
 the non-coating portion is fixed to the metal plate-shaped member while pinching the metal plate-shaped member from opposite sides of the metal plate-shaped member, and   the current collector is attached to only one side of the non-coating portion pinching the metal plate-shaped member from the opposites sides.   
     
     
         15 . The battery according to  claim 12 , wherein
 the metal plate-shaped member comprises a first plate-shaped member attached to one end portion in a direction of a winding axis of the winding core and a second plate-shaped member attached to other end portion in a direction of a winding axis of the winding core, the non-coating portion comprises a first non-coating portion formed at one end in the width direction of the positive electrode plate and a second non-coating portion formed at one end in the width direction of the negative electrode plate,   the first non-coating portion and the second non-coating portion are in the state of protruding from opposite sides in the direction of the winding axis from the separator,   the current collector comprises a positive current collector attached to the positive electrode and a negative current collector attached to the negative electrode,   the positive current collector, the first non-coating portion, and the first metal plate-shaped member are fixed while the first non-coating portion is sandwiched between the connection plate of the positive current collector and the first metal plate-shaped member, and   the negative current collector, the second non-coating portion, and the second metal plate-shaped member are fixed while the second non-coating portion is sandwiched between the connection plate of the negative current collector and the second metal plate-shaped member.   
     
     
         16 . The battery according to  claim 12 , wherein
 the metal plate-shaped member is attached without protruding in a direction of a normal to an outer peripheral face of the winding core from the outer peripheral face.   
     
     
         17 . The battery according to  claim 12 , wherein
 an end portion of the metal plate-shaped member in the direction of the winding axis of the winding core is inserted into the end portion of the winding core.   
     
     
         18 . The battery according to  claim 12 , wherein
 the metal plate-shaped member is attached to an entire circumference of an axial end portion of the winding core.