Patent ID: 8053100

Claim:
A battery cooling device comprising: a module assembly including a plurality of battery modules, the battery modules being connected in series and arranged such that side surfaces of the battery modules are opposed to each other, the side surfaces being parallel to a longitudinal direction of the battery modules; a battery housing that houses the module assembly; a blower disposed to oppose a wall of the battery housing, the wall being perpendicular to the side surfaces of the battery modules and being other than a top wall and a bottom wall of the battery housing, wherein the blower has a rotation shaft connecting two fans, the rotation shaft being located at a height between an upper end and a lower end of the module assembly with respect to an up and down direction of the module assembly, the blower is configured to blow cooling air toward an upper surface of the module assembly, the cooling air being supplied over a range that is substantially equal to a dimension of the module assembly in a transverse direction, the battery modules are stacked in a direction perpendicular to a flow direction of the cooling air blown from the blower, such that the longitudinal direction of the battery modules coincides with the flow direction of the cooling air and clearances are provided between adjacent side surfaces, the module assembly further includes positive terminals and negative terminals disposed on upper portions of the plurality of battery modules, and electrode portions electrically connecting between opposite terminals of the battery modules, and the blower is disposed to blow the cooling air in a direction along the clearances, so that the cooling air is discharged to an outside of the housing after passing through the clearances.