Rechargeable battery having a current collector integrally formed and contacting a current collector plate to form a flat plane

摘要

In a rechargeable battery in which an electrode plate group obtained by superimposing a positive electrode plate, in which positive electrode material is attached to a positive electrode current collector, and a negative electrode plate, in which negative electrode material is attached to a negative electrode current collector, with a separator therebetween is accommodated in a battery container together with electrolyte, the current collectors of the electrode plates are respectively projected at opposite ends of the electrode plate group, forming by themselves flat planes by being pressed, and current collecting plates are joined to these flat planes.