Battery pack including cell frames coupled to each other

1. A battery pack, comprising:

a plurality of battery cells, each battery cell of the plurality of battery cells including a top surface from which a pair of electrode tabs are drawn, a bottom surface facing the top surface, a pair of long side surfaces, and a pair of short side surfaces among surfaces connecting the top surface and the bottom surface, each long side surface of the pair of long side surfaces having a larger area than each short side surface of the pair of short side surfaces; and

a plurality of cell frames, each cell frame of the plurality of cell frames individually accommodating a respective one of the plurality of battery cells and exposing at least portions of the pair of long side surfaces of the respective one of the battery cells,

wherein:

the plurality of cell frames are coupled to each other in a line such that the plurality of battery cells respectively accommodated in the plurality of cell frames are aligned such that one of the pair of long side surfaces of each battery cell of the plurality battery cells faces one of the pair of long side surfaces of an adjacent one of the plurality of battery cells,

each cell frame of the plurality of cell frames has edges,

the edges of each cell frame of the plurality of cell frames include one or more fixing parts extending parallel with the pair of long side surfaces of the battery cells and covering portions of the pair of long side surfaces,

one surface of each cell frame of the plurality of cell frames includes:

a first end of the one surface and a second end of the one surface;

a first coupling groove of the one surface, the first coupling groove being in a form of a cut from the first end of the one surface,

a coupling protrusion of the one surface, the coupling protrusion protruding from the second end of the one surface, the coupling protrusion being positioned at a same height as the first coupling groove, and

a second coupling groove of the one surface, the second coupling groove being in a form of a cut from the second end of the one surface, the second coupling groove being positioned under the coupling protrusion, and

another surface facing the one surface of each cell frame of the plurality of cell frames includes a first end of the another surface and a second end of the another surface, the another surface including:

a first coupling groove of the another surface, the first coupling groove being in a form of a cut from the second end of the another surface,

a coupling protrusion of the another surface, the coupling protrusion protruding from the second end of the another surface, the coupling protrusion of the another surface being positioned under the first coupling groove of the another surface, and

a second coupling groove of the another surface, the second coupling groove being in a form of a cut from the first end of the another surface, and the second coupling groove being positioned at a same height as the coupling protrusion.

2. The battery pack as claimed in claim 1 , wherein the one or more fixing parts extend from portions of the edges of each cell frame of the plurality of cell frames.

3. The battery pack as claimed in claim 1 , wherein the one or more fixing parts extend along an entirety of the edges of each cell frame of the plurality of cell frames.

4. The battery pack as claimed in claim 1 , wherein:

cell frames of the plurality of cell frames have first sides and second sides, long side surfaces of the pair of long side surfaces of the plurality of battery cells that face first sides of the plurality of cell frames are wholly exposed by the plurality of cell frames, and

long side surfaces of the pair of long side surfaces of the plurality of battery cells that face second sides of the cell frames are partially exposed and are partially covered by the fixing parts.

5. The battery pack as claimed in claim 1 , wherein the fixing parts are located between each of the plurality of battery cells, the fixing parts separating the battery cells from each other.

6. The battery pack as claimed in claim 1 , wherein a width of each of surfaces of each cell frame of the plurality of cell frames is greater than a width of each of the short side surfaces of the pair of short side surfaces of each battery cell.

7. The battery pack as claimed in claim 1 , wherein each cell frame of the plurality of cell frames further includes one or more air holes in a form of a partial cut in an edge of the cell frame of the plurality of cell frames, the air holes exposing a portion of a respective one of the plurality of battery cells.

8. The battery pack as claimed in claim 1 , wherein each cell frame of the plurality of cell frames includes one or more coupling grooves and one or more coupling protrusions corresponding to the coupling grooves, the one or more coupling grooves and the one or more coupling protrusions engaging the plurality of cell frames with each other.

9. The battery pack as claimed in claim 1 , wherein:

the first coupling groove of the one surface and the coupling protrusion of the one surface of each cell frame of the plurality of cell frames are positioned at a same height as the first coupling groove of the another surface of each cell frame of the plurality of cell frames, and

the second coupling groove of the one surface of each cell frame of the plurality of cell frames is positioned at the same height as the second coupling groove on the another surface of each cell frame of the plurality of cell frames and the coupling protrusion of the another surface of each cell frame.