Patent ID: 8663829

Claim:
A battery module, comprising: a first battery cell; a first cooling fin having a first panel portion and first and second rail portions disposed on a first side of the first panel portion, the first battery cell being disposed adjacent to a first side of the first panel portion between the first and second rail portions, the first and second rail portions each having a thickness greater than the first panel portion; the first rail portion having at least first and second folded portions that are folded on top of one another, the first folded portion being disposed on the first side of the first panel portion, the second folded portion being disposed on the first folded portion; the second rail portion having a plurality of folded portions that are folded on top of one another, the first cooling fin conducting heat energy from the first battery cell into the first cooling fin to cool the first battery cell; and first and second conduits extending through the first and second rail portions, respectively, of the first cooling fin that receive a fluid that flows through the first and second conduits to conduct heat energy from the first cooling fin into the fluid, the first conduit extending through both the first rail portion and the first panel portion.