PURPOSE: To reduce the cost of cells by utilizing positive electrode plate, film separation plate, negative electrode plate, insulation separator in the longitudinal direction, conductive separator and lateral insulation separator and arranging sigle cell batteries vertically and horizontally with the positive and negative directions changed alternately, eliminating a bipolar plate.
CONSTITUTION: Unit cells Ui each of which is consisting of a positive plate A, film seperation plate B and a negative electrode plate C are arranged with the positive and negative electrodes changed alternately in the thickness direction, forming aggregated cells G1, G2,.... The conductive separator F and lateral insulation separator H are alternately provided between the adjacent single cells Ui, Ui+1, the negative electrode of single cell Ui and the positive electrode of single cell Ui+1 are caused to become conductive and the positive electrode of single cell Ui and the negativea electrode of single cell Ui+1 are insulated. The aggregated cells G1, G2,... arranged in the longitudinal direction are insulated each other by the insulating separator E and are stacked in the thickness direction. This structure reduces volume and weight because a bipolar plate is not used and stabilizes battery efficiency.
MATSUBARA HIRONAGA
SHIGEMATSU TOSHIO
KONDOU MAMORU
