Battery module including module housing
Disclosed is a battery module that reduces damage of internal components during an assembling process and enhances the manufacturing efficiency. The battery module includes a plurality of cylindrical battery cells arranged in a horizontal direction and each standing upright in a vertical direction; and a module housing including outer sidewalls configured to form an inner space, a plurality of hollow tubes having inner sidewalls located in the inner space and extending in the vertical direction to accommodate the plurality of cylindrical battery cells therein, and a cavity formed by opening at least a part of vertical central portions of the inner sidewalls of the plurality of hollow tubes to form an empty space therein.
1. A battery module, comprising:
a plurality of cylindrical battery cells arranged in a horizontal direction and each standing upright in a vertical direction;
a module housing including outer sidewalls configured to form an inner space, a plurality of hollow tubes having inner sidewalls located in the inner space and extending in the vertical direction to accommodate the plurality of cylindrical battery cells therein, and a cavity formed by opening at least a part of vertical central portions of the inner sidewalls of the plurality of hollow tubes to form an empty space therein; and
a cooling member in the space of the cavity,
wherein the module housing includes at least one fixing tube extending in the vertical direction,
wherein the battery module further comprises a bushing inserted into the fixing tube, and
wherein the cooling member is connected to the bushing and extends in the horizontal direction from an outer surface of the bushing to contact an outer surface of the plurality of cylindrical battery cells.
2. The battery module according to claim 1 , wherein the module housing includes:
an upper case having a plurality of upper hollow tubes configured to accommodate an upper portion of the plurality of cylindrical battery cells; and
a lower case having a plurality of lower hollow tubes configured to accommodate a lower portion of the plurality of cylindrical battery cells,
wherein the cavity includes a first recessed structure with at least a part of a lower surface of the upper hollow tube recessed upward and a second recessed structure with a part of an upper surface of the lower hollow tube recessed downward.
3. The battery module according to claim 2 , wherein the module housing includes a guide unit in the cavity to guide the plurality of cylindrical battery cells to be inserted into the plurality of hollow tubes.
4. The battery module according to claim 3 , wherein the guide unit includes:
a first cylinder at the upper case and having a cylindrical form protrusively extending toward the lower case; and
a second cylinder at the lower case and having a cylindrical form protrusively extending toward the upper case.
5. The battery module according to claim 4 , wherein the cylindrical form of each of the first and second cylinders has a cylinder diameter gradually decreasing toward a terminal portion at which the cylindrical form protrusively extends.
6. The battery module according to claim 4 , wherein a terminal portion of the cylindrical form of each of the first and second cylinders at which the cylindrical form protrusively extends is rounded or chamfered at an edge thereof.
7. The battery module according to claim 1 , wherein the cooling member includes a guide protrusion protrusively extending inward and having a cylindrical form to guide the cylindrical battery cells to be inserted into the hollow tubes.
8. A battery pack, comprising the battery module of claim 1 .
9. A vehicle, comprising the battery pack of claim 8 .