Patent ID: 6235421
Filing Date: 2001-05-22
Classification: H01M,Y02E,Y02P

Abstract:
An enclosed lead storage battery comprising:an enclosed container,a group of electrode plates comprising positive electrode plates and negative electrode plates, andseparators,said group of electrode plates and said separators being housed in said container, said positive electrode plates, said negative electrode plates, and said separators being layered side by side, each of said positive electrode plates and said negative electrode plates comprising a top side, a bottom side, and opposite lateral sides,wherein at least one of said positive electrode plates and at least one of said negative electrode plates provides a grid having no frames at opposite lateral sides of said grid,wherein a porous mat of a single uniform maximum thickness fills a space between said opposite lateral sides of said grid and said container,wherein said porous mat has a height approximately equal to that of said positive electrode plates and said negative electrode plates, andwherein said separators extend beyond the opposite lateral sides of the electrode plates.