Patent ID: 8551631
Filing Date: 2013-10-08
Classification: H01M,Y02E

Abstract:
1. An assembled battery comprising a plurality of unit cells that are arranged in an arrangement direction, wherein each of the unit cells includes an electrode body that includes a positive electrode and a negative electrode, and a container that houses the electrode body; two side walls of each unit cell container that are juxtaposed in the arrangement direction are a channel-side side wall that directly faces a channel through which a cooling medium passes, and a non-channel-side side wall that does not directly face the channel; and in the unit cell container in every unit cell, one or more gap-filling members that fill in a gap between the electrode body and the two side walls are inserted, and the one or more gap-filling members are disposed so that a distance between the channel-side side wall and the electrode body is shorter than a distance between the non-channel-side side wall and the electrode body; wherein: a plurality of gap-filling members whose thicknesses are equal to each other are inserted as the one or more gap-filling members in the unit cell container in every unit cell; at least one gap-filling member of the plurality of gap-filling members is disposed between the channel-side side wall and the electrode body, and other one or more gap-filling members are disposed between the non-channel-side side wall and the electrode body; and a total thickness of the at least one gap-filling member disposed between the channel-side side wall and the electrode body is less than a total thickness of the gap-filling members disposed between the non-channel-side side wall and the electrode body.