Patent ID: 6939642

Claim:
A prismatic battery module comprising: a prismatic battery case having a plurality of prismatic cell cases connected to one another through a plurality of separation walls; an electroconductive connector forming at least a central part of the separation wall arranged between the cell cases; an electrode plate group arranged in each of the plurality of cell cases, the electrode plate group including positive electrode plates, negative electrode plates, and separators interposed therebetween, and further forming lead portions by projecting one side portion of the positive electrode plates and one side portion of the negative electrode plates in opposite directions, respectively; and an electrolyte accommodated in each of the cell cases, wherein the positive electrode plates and the negative electrode plates are directly connected to the respective electroconductive connectors arranged on both sides of each cell case, wherein the lead portions of the electrode plates include projections, the projections being joined together to form a raised portion, and the electroconductive connector is integrally formed with a separation wall separating the cell cases from one another, the electroconductive connector having a connection surface that comes into contact with a side of the raised portion of the lead portions, and wherein the raised portion or the lead portions is brought into contact with the electroconductive connector.