Packaging box

1. A packaging box comprising:

an external box having a receiving space therein, the external box comprising a receiving part and an external cover removably coupleable to the receiving part;

an internal box removably receivable in the receiving space of the external box, the internal box having a receiving space therein and comprising a body having an opening defined in a lower surface of the body; and

a slide pad slidably coupleable to a lower portion of the internal box, the slide pad being slidable relative to the opening,

wherein a plurality of battery cells is receivable in the receiving space of the internal box.

2. The packaging box as claimed in claim 1 , further comprising a guide arranged in the internal box and comprising a plurality of partitions, wherein the plurality of battery cells is received into the guide.

3. The packaging box as claimed in claim 1 , wherein the internal box further comprises an internal cover covering an open upper side of the body, the body and the internal cover being integrally formed.

4. The packaging box as claimed in claim 3 , wherein the internal cover comprises:

a first surface connected to a rear surface of the body and covering the open upper side of the body; and

a second surface connected to the first surface and covering a front surface of the body opposite the rear surface.

5. The packaging box as claimed in claim 3 , wherein the opening is defined in the lower surface of the body opposite the open upper side.

6. The packaging box as claimed in claim 3 ,

wherein the internal cover comprises a wing part coupleable to a side surface of the body, and

wherein a wing gap is defined in the body, the wing part being insertable in the wing gap.

7. The packaging box as claimed in claim 3 , wherein a pad gap is defined in the body, the slide pad being removably insertable in the pad gap.

8. The packaging box as claimed in claim 1 , wherein the slide pad comprises:

a first surface slidably coupleable to the lower portion of the internal box; and

a second surface coupled to a front surface of the internal box,

wherein a handle hole is defined in the second surface.

9. A packaging box comprising:

an external box having a receiving space therein, the external box comprising a receiving part and a cover removably coupleable to the receiving part;

an internal box receivable in the receiving space of the external box, the internal box having a receiving space therein; and

at least one perforated line on a front surface and a bottom surface of the internal box, the at least one perforated line continuously extending from an upper edge of the front surface to a lower edge of the front surface and to the bottom surface,

wherein a plurality of battery cells is receivable in the receiving space of the internal box.

10. The packaging box as claimed in claim 9 , further comprising a guide arranged in the internal box and comprising a plurality of partitions, wherein the plurality of battery cells is received into the guide.

11. The packaging box as claimed in claim 9 , wherein the internal box comprises a body and an internal cover covering an open upper side of the body, the body and the internal cover being integrally formed.

12. The packaging box as claimed in claim 11 , wherein the internal cover comprises:

a first surface connected to a rear surface of the body and covering the open upper side of the body; and

a second surface connected to the first surface and covering a front surface of the body opposite the rear surface.

13. The packaging box as claimed in claim 11 ,

wherein the internal cover comprises a wing part coupleable to a side surface of the body, and

wherein a wing gap is defined in the body, the wing part being insertable in the wing gap.