Battery with a buffer layer adhered to separators
The present application provides a battery and an electronic device thereof. The battery comprises: a electrode assembly having at least one separator protrusion; a package bag for accommodating the electrode assembly; and a buffer layer arranged between the electrode assembly and the package bag; wherein the buffer layer is further arranged on the at least one separator protrusion. The purpose of the present application is to provide a battery and an electronic device thereof which are capable of improving the drop resistance performance of the battery and improving the safety performance of its use.
1. A battery, comprising:
an electrode assembly having at least one separator protrusion;
a package bag for accommodating the electrode assembly; and
a buffer layer arranged between the electrode assembly and the package bag;
an adhesive layer arranged between the buffer layer and the at least one separator protrusion;
wherein the buffer layer is adhered to the at least one separator protrusion by the adhesive layer.
2. The battery according to claim 1 , wherein the at least one separator protrusion includes a first separator protrusion and a second separator protrusion, and the adhesive layer extends between the first separator protrusion and the second separator protrusion.
3. The battery according to claim 1 , further comprising an electrode tab, the buffer layer has a notch, the electrode tab passes through the notch.
4. The battery according to claim 3 , wherein the length of the notch is between 1 mm and 10 mm greater than the width of the electrode tab.
5. The battery according to claim 1 , further comprising an electrode tab, the buffer layer has a through hole, the electrode tab passes through the through hole.
6. The battery according to claim 5 , wherein the length of the through hole is between 1 mm and 10 mm greater than the width of the electrode tab.
7. The battery according to claim 1 , wherein the buffer layer has an elastic modulus between 1 MPa and 1000 MPa.
8. The battery according to claim 1 , wherein the length of the buffer layer is between 0 mm and 10 mm less than the width of the electrode assembly.
9. The battery according to claim 1 , wherein a thickness of the buffer layer is between 0.1 mm and 5 mm.
10. The battery according to claim 1 , wherein the material of the buffer layer includes an elastic substance.
11. The battery according to claim 10 , wherein the elastic substance is a rubber pad, and the material of the rubber pad is at least one selected from a group consisting of polyvinylidene fluoride, polyethylene, polypropylene, styrene butadiene rubber and organic silica gel.
12. An electronic device, comprising: a case and a battery disposed in the case; the battery comprises:
an electrode assembly having at least one separator protrusion;
a package bag for accommodating the electrode assembly; and
a buffer layer arranged between the electrode assembly and the package bag,
an adhesive layer between the buffer and the at least one separator protrusion;
wherein the buffer layer is further adhered to the at least one separator protrusion by the adhesive layer.
13. The electronic device according to claim 12 , wherein the at least one separator protrusion includes a first separator protrusion and a second separator protrusion, and the adhesive layer extends between the first separator protrusion and the second separator protrusion.
14. The electronic device according to claim 12 , further comprising an electrode tab, the buffer layer has a notch, the electrode tab passes through the notch.
15. The electronic device according to claim 14 , wherein the length of the notch is between 1 mm and 10 mm greater than the width of the electrode tab.
16. The electronic device according to claim 12 , further comprising an electrode tab, the buffer layer has a through hole, the electrode tab passes through the notch.
17. The electronic device according to claim 16 , wherein the length of the through hole is between 1 mm and 10 mm greater than the width of the electrode tab.
18. The electronic device according to claim 12 , wherein a thickness of the buffer layer is between 0.1 mm and 5 mm.
19. The electronic device according to claim 12 , wherein the material of the buffer layer includes an elastic substance.
20. The electronic device according to claim 19 , wherein the elastic substance is a rubber pad, and the material of the rubber pad is at least one selected from a group consisting of polyvinylidene fluoride, polyethylene, polypropylene, styrene butadiene rubber and organic silica gel.