Battery and device using the same
An impact-proofed battery includes a packaging film, an electrode assembly received in the packaging film, tabs extending from an end portion of the electrode assembly, and insulating layers. Each tab includes a connecting region, a packaging region, and an exposed region connected in the order written. The connecting region is electrically connected to the electrode assembly, and the exposed region is exposed from the packaging film. Each insulating layer includes a packaging portion and a protective portion connecting to the packaging portion. The packaging portion covers the packaging region and is between the packaging film and the packaging region. The protective portion is between the connecting region and the packaging film, and an area of the protective portion is greater than an area of the connecting region. The disclosure also provides a device using the battery.
1. A battery comprising:
a packaging film;
an electrode assembly received in the packaging film;
tabs extending from an end portion of the electrode assembly; and
insulating layers;
wherein each of the tabs comprises a connecting region, a packaging region and an exposed region connected in the order written along a longitudinal direction of the tab; the connecting region is electrically connected to the electrode assembly, and the exposed region is exposed from the packaging film; each of the insulating layers comprises a packaging portion and a protective portion connecting to the packaging portion along the longitudinal direction of the tab; the packaging portion covers the packaging region and is located between the packaging film and the packaging region; and the protective portion covers the connecting region and is located between the connecting region and the packaging film, and a surface area of the protective portion is greater than a surface area of the connecting region, wherein the surface area of the protective portion is an area of a surface of the protective portion in contact with the connecting region and the surface area of the connecting region is an area of a surface of the connecting region in contact with the protective portion.
2. The battery of claim 1 , wherein the protective portion is located on an outer surface of the connecting region.
3. The battery of claim 2 , wherein the connecting region comprises a plurality of sub-tabs, each of the insulating layers comprises a plurality of the protective portions, each of the plurality of sub-tabs is covered by one of the plurality of the protective portions, and the plurality of the protective portions are independent of each other or integrally connected to each other.
4. The battery of claim 1 , wherein the tabs are at least one positive tab and at least one negative tab; the packaging region of each of the at least one positive tab and the packaging region of each of the at least one negative tab are respectively covered by the packaging portion; the packaging portion covering each of the at least one positive tab and the packaging portion covering each of the at least one negative tab are independent of each other or integrally connected to each other; the protective portion corresponding to each of the at least one positive tab and the protective portion corresponding to each of the at least one negative tab are independent of each other or integrally connected to each other.
5. The battery of claim 1 , wherein each of the insulating layers further comprises an adhesive portion, the adhesive portion bonds the connecting region with the protective portion.
6. The battery of claim 1 , wherein an end of the protective portion facing away from the packaging portion is located on an outer surface of the electrode assembly.
7. The battery of claim 6 , wherein each of the insulating layers further comprises an adhesive portion, the adhesive portion bonds the protective portion to the electrode assembly.
8. The battery of claim 6 , wherein each of the insulating layers further comprises an adhesive portion, the adhesive portion bonds the protective portion with the packaging film.
9. The battery of claim 1 , wherein the protective portion is located on an outer surface of the connecting region.
10. The battery of claim 1 , wherein a thickness of the packaging portion is 5 μm to 200 μm, and a thickness of the protective portion is 5 μm to 200 μm.
11. A device comprising:
a battery comprising:
a packaging film;
an electrode assembly received in the packaging film;
tabs extending from an end portion of the electrode assembly; and
insulating layers;
wherein each of the tabs comprises a connecting region, a packaging region and an exposed region connected in the order written along a longitudinal direction of the tab; the connecting region is electrically connected to the electrode assembly, and the exposed region is exposed from the packaging film; each of the insulating layers comprises a packaging portion and a protective portion connecting to the packaging portion along the longitudinal direction of the tab; the packaging portion covers the packaging region and is located between the packaging film and the packaging region; and the protective portion covers the connecting region and is located between the connecting region and the packaging film, and a surface area of the protective portion is greater than a surface area of the connecting region, wherein the surface area of the protective portion is an area of a surface of the protective portion in contact with the connecting region and the surface area of the connecting region is an area of a surface of the connecting region in contact with the protective portion.
12. The device of claim 11 , wherein the protective portion is located on an outer surface of the connecting region.
13. The device of claim 12 , wherein the connecting region comprises a plurality of sub-tabs, each of the insulating layers comprises a plurality of the protective portions, each of the plurality of sub-tabs is covered by one of the plurality of the protective portions, and the plurality of the protective portions are independent of each other or integrally connected to each other.
14. The device of claim 11 , wherein the tabs are at least one positive tab and at least one negative tab; the packaging region of each of the at least one positive tab and the packaging region of each of the at least one negative tab are respectively covered by the packaging portion; the packaging portion covering each of the at least one positive tab and the packaging portion covering each of the at least one negative tab are independent of each other or integrally connected to each other; the protective portion corresponding to each of the at least one positive tab and the protective portion corresponding to each of the at least one negative tab are independent of each other or integrally connected to each other.
15. The device of claim 11 , wherein each of the insulating layers further comprises an adhesive portion, the adhesive portion bonds the connecting region with the protective portion.
16. The device of claim 11 , wherein an end of the protective portion facing away from the packaging portion is located on an outer surface of the electrode assembly.
17. The device of claim 16 , wherein each of the insulating layers further comprises an adhesive portion, the adhesive portion bonds the protective portion to the electrode assembly.
18. The device of claim 16 , wherein each of the insulating layers further comprises an adhesive portion, the adhesive portion bonds the protective portion with the packaging film.
19. The device of claim 11 , wherein the protective portion is located on an outer surface of the connecting region.
20. The device of claim 10 , wherein a thickness of the packaging portion is 5 μm to 200 μm, and a thickness of the protective portion is 5 μm to about 200 μm.