Patent ID: 9692094
Date: 2017-06-27
CPC Classifications: F28D,F28F,H01M,Y02E

Claim:
1. A heat sink comprising: a bottom wall and a top wall spaced from the bottom wall in a vertical direction; a first side wall extending between the top wall and the bottom wall, the bottom wall having a larger surface area than the first side wall; two or more separated channels through which a refrigerant passes to cool a secondary battery by an indirect cooling method, the secondary battery comprising a cell assembly in which at least two unit cells are stacked, each unit cell comprising a positive electrode plate, a separator, and a negative electrode plate, and a plurality of positive and negative electrode tabs protruding from the positive and negative electrode plates of each unit cell is electrically connected to positive and negative leads, respectively, an inlet in the first side wall for supplying coolant to the two or more separated channels; an outlet in the first side wall for removing coolant from the two or more separated channels; and a plurality of branches wherein each branch extends between the inlet and one of the two or more separated channels, wherein the branches are arranged in the vertical direction relative to one another.