Packaging film, battery module, and mobile terminal
A packaging film includes a packaging portion and a pulling portion, and the pulling portion and the packaging portion are demarcated by a tear line. When the pulling portion is pulled, the tear line is disconnected, and the pulling portion is separated from the packaging portion. In a packaging face of the packaging portion, an area packaging a side wall of the battery is a glue-free area, and other areas are provided with a first adhesive. An adhesive face in the packaging portion is provided with a second adhesive. A part of the packaging face in the pulling portion is provided with a third adhesive, and the adhesive face in the pulling portion is a glue-free area.
1. A packaging film, comprising:
a packaging portion comprising:
a packaging face configured to face a battery and comprising:
a first area configured to package a side wall of the battery, wherein the first area comprises a glue-free area; and
a second area comprising a first adhesive having a first adhesive force; and
an adhesive face configured to face a battery compartment, wherein the adhesive face comprises a second adhesive having a second adhesive force, and wherein the first adhesive force is less than the second adhesive force;
a pulling portion, wherein the pulling portion and the packaging portion are demarcated by at least two tear lines, and wherein the pulling portion is configured to pull and separate from the packaging portion by disconnecting the two tear lines;
a protrusion portion that extends beyond a side edge of the packaging film; and
a through hole, wherein each of the two tear lines extends from the protrusion portion to the through hole.
2. The packaging film of claim 1 , wherein the at least two tear lines are arranged in parallel.
3. The packaging film of claim 1 , wherein the at least two tear lines comprise a U-shaped portion, and wherein two ends of the U-shaped portion extend to a same side of the packaging film.
4. The packaging film of claim 1 , wherein an edge position of the protrusion portion comprises a notch coupled to each of the at least two tear lines.
5. The packaging film of claim 1 , wherein a part of the pulling portion that extends to the protrusion portion comprises another glue-free area, and wherein the pulling portion is partially outside the protrusion portion.
6. The packaging film of claim 1 , wherein the at least two tear lines comprise a double-layer tear line.
7. The packaging film of claim 1 , wherein a protective film is attached to the adhesive face.
8. A mobile terminal, comprising:
a housing;
a battery compartment disposed in the housing; and
a battery fastened in the battery compartment, wherein the battery is packaged with a packaging film, and wherein the packaging film comprises:
a packaging portion comprising:
a packaging face facing the battery and comprising:
a first area packaging a side wall of the battery, wherein the first area comprises a glue-free area; and
a second area comprising a first adhesive having a first adhesive force; and
an adhesive face facing the battery compartment, wherein the adhesive face comprises a second adhesive having a second adhesive force, and wherein the first adhesive force is less than the second adhesive force;
a pulling portion, wherein the pulling portion and the packaging portion are demarcated by at least two tear lines, and wherein the pulling portion is configured to pull and separate from the packaging portion by disconnecting the two tear lines;
a protrusion portion that extends beyond a side edge of the packaging film; and
a through hole, wherein each of the two tear lines extends from the protrusion portion to the through hole.
9. The mobile terminal of claim 8 , wherein the at least two tear lines are arranged in parallel.
10. The mobile terminal of claim 8 , wherein the at least two tear lines comprise a U-shaped portion, and wherein two ends of the U-shaped portion extend to a same side of the packaging film.
11. The mobile terminal of claim 8 , wherein an edge position of the protrusion portion comprises a notch connected to each of the at least two tear lines.
12. The mobile terminal of claim 8 , wherein a part of the pulling portion that extends to the protrusion portion comprises another glue-free area, and wherein the pulling portion is partially outside the protrusion portion.
13. The mobile terminal of claim 8 , wherein the at least two tear lines comprise a double-layer tear line.
14. The mobile terminal of claim 8 , wherein a protective film is attached to the adhesive face.
15. The mobile terminal of claim 8 , wherein the packaging film comprises a one-piece structure.
16. The mobile terminal of claim 8 , wherein the first adhesive and the second adhesive comprise different adhesives.
17. The mobile terminal of claim 8 , wherein the first adhesive and the second adhesive comprise the same adhesive.
18. The mobile terminal of claim 8 , wherein the mobile terminal comprises a mobile phone.
19. The mobile terminal of claim 8 , wherein the mobile terminal comprises a tablet computer.
20. The mobile terminal of claim 8 , wherein the mobile terminal comprises a laptop computer.