Battery module

1. A battery module comprising:

a plurality of battery cells stacked on each other;

a housing accommodating the plurality of battery cells and including a support member configured to support the plurality of battery cells; and

a heat sink configured to contact the support member,

wherein the support member has a plurality of through-holes formed therein, and the plurality of through-holes are filled with a thermal interface material,

wherein a region in which the plurality of battery cells are disposed is divided into a plurality of temperature regions based on a temperature distribution of the plurality of battery cells,

wherein a distance between each of the plurality of through-holes formed in the support member is set differently in different ones of the plurality of temperature regions,

wherein: the plurality of temperature regions comprise a high temperature region, a low temperature region, and a middle region between the high temperature region and the low temperature region, and

a distance between the plurality of through-holes in a portion of the support member corresponding to the middle region gradually increases along a direction from the high temperature region towards the low temperature region.

2. The battery module according to claim 1 , wherein a thermal interface material is interposed between the plurality of battery cells and the support member so as to be connected to the thermal interface material in the plurality of through-holes of the support member.

3. The battery module according to claim 1 , further comprising a heat dissipation pad disposed between the plurality of battery cells and the support member,

wherein the heat dissipation pad has a plurality of through-holes formed therein, and the plurality of through-holes of the heat dissipation pad are filled with the thermal interface material.

4. The battery module according to claim 3 , wherein:

the plurality of through-holes of the heat dissipation pad are formed at positions corresponding to the plurality of through-holes of the support member, and

the thermal interface material in the plurality of through-holes of the heat dissipation pad and the thermal interface material in the plurality of through-holes of the support member are connected to each other.

5. The battery module according to claim 3 , wherein: the plurality of temperature regions comprise a high temperature region, a low temperature region, and a middle region between the high temperature region and the low temperature region, and a distance between the plurality of through-holes in a portion of the heat dissipation pad corresponding to the middle region gradually increases along a direction from the high temperature region towards the low temperature region.

6. The battery module according to claim 3 , wherein a thermal interface material is interposed between the plurality of battery cells and the heat dissipation pad so as to be connected to the thermal interface material in the plurality of through-holes of the heat dissipation pad.

7. A battery pack comprising the battery module according to claim 1 .

8. The battery module according to claim 1 , wherein the heat sink includes a cooling channel defined therein for allowing a coolant to flow therethrough.

9. The battery module according to claim 2 , wherein portions between the plurality of battery cells and the support member are filled with the thermal interface material, the thermal interface material being in close contact with the plurality of battery cells.

10. The battery module according to claim 6 , wherein portions between the plurality of battery cells and the heat dissipation pad are filled with the thermal interface material, the thermal interface material being in close contact with the plurality of battery cells.