Patent ID: 7320846

Claim:
A bipolar battery comprising: a bipolar electrode provided with: a current collector; a positive electrode layer formed on one surface of the current collector; and a negative electrode layer formed on the other surface of the current collector; an electrolyte layer permitting the bipolar electrode to be sequentially laminated through the electrolyte layer so as to be connected in series to form a stack structure; a resin portion with which the positive electrode layer, the negative electrode layer and the electrolyte layer are potted substantially entirely in a stacking direction; a first outermost current collector outside the positive electrode layer that is disposed outermost in the series; and a second outermost current collector outside the negative electrode layer that is oppositely disposed outermost in the series, wherein each of the first outermost current collector and the second outermost current collector is 2 to 50 times greater in thickness than the current collector, wherein at least a part of the current collector to be associated with the positive electrode layer, the negative electrode layer and the electrolyte layer is potted with the resin portion and a residual portion of the current collector is exposed from the resin portion to form an exposed portion, and wherein the exposed portion of the current collector serves as a voltage detection tab and an output tab.