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US 10,833,297 B2Granted
Jelly roll tape for rechargeable battery and rechargeable battery having the same
AssigneeSamsung SDI Co., Ltd.
InventorsJeongchull Ahn, Seongja Noh
Life of this patent
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Abstract
A jelly roll tape for a rechargeable battery and a rechargeable battery having the same are disclosed. In one aspect, the jelly roll tape includes a first adhesive layer configured to develop an adhesive property based at least in part on a reaction with an electrolytic solution and a second adhesive layer formed on at least one surface of the first adhesive layer. The second adhesive layer is formed at least partially of a rubber-based material.
Claims12
A rechargeable battery, comprising:
- a case configured to house an electrode assembly;
- a seal tape fixing the electrode assembly;
- and
- a jelly roll tape for the electrode assembly of a rechargeable battery, the jelly roll tape adhered to the seal tape with the seal tape interposed between the jelly roll tape and the electrode assembly, and the jelly roll tape comprising:
- a first adhesive layer configured to develop an adhesive property based at least in part on a reaction with an electrolytic solution, the first adhesive layer having a tensile strength in the range of about 200 kgf/cm2 to about 600 kgf/cm2;
- an electrolyte insoluble film adhered to and in direct contact with at least one surface of the first adhesive layer;
- and
- a second adhesive layer formed on the electrolyte insoluble film opposite the first adhesive layer, wherein the second adhesive layer is formed at least 70 wt % of a rubber-based material having a thickness of at least 5 μm,
- wherein the electrolyte insoluble film is at least approximately 6 μm thick and the jelly roll tape is between 20 μm and 40 μm thick,
- wherein the electrolyte insoluble film is interposed between the first and second adhesive layers and is formed of polyethyleneterephthalate (PET), and
- wherein the jelly roll tape has an area that is less than an area of the seal tape.
8 more elements
A rechargeable battery, comprising:
- an electrode assembly including a first electrode plate, a second electrode plate having a different polarity than the first electrode plate, and a separator interposed between the first and second electrode plates and wrapped around the electrode assembly to form an outermost surface of the electrode assembly;
- a seal tape fixing the electrode assembly;
- an electrolytic solution;
- a jelly roll tape adhered to the seal tape with the seal tape interposed between the jelly roll tape and the electrode assembly;
- and
- a case housing the electrode assembly and the electrolytic solution,
- wherein the jelly roll tape comprises:
- a first adhesive layer configured to develop an adhesive property based at least in part on a reaction with the electrolytic solution;
- an electrolyte insoluble film adhered to and in direct contact with at least one surface of the first adhesive layer;
- and
- a second adhesive layer formed on the electrolyte insoluble film opposite the first adhesive layer, wherein the second adhesive layer is formed at least 70 wt % of a rubber-based material having a thickness of at least 5 μm,
- wherein the electrolyte insoluble film is at least approximately 6 μm thick and the jelly roll tape is between 20 μm and 40 μm thick, and
- wherein the electrolyte insoluble film is interposed between the first and second adhesive layers and is formed of polyethyleneterephthalate (PET).
10 more elements
A rechargeable battery, comprising:
- an electrode assembly;
- an electrolyte;
- a seal tape fixing the electrode assembly;
- a case housing the electrode assembly and the electrolytic solution;
- and
- a jelly roll tape adhered to the seal tape with the seal tape interposed between the jelly roll tape and the electrode assembly, the jelly roll tape comprising:
- a first adhesive layer configured to become an adhesive upon contacting the electrolyte, the first adhesive layer having a tensile strength in the range of about 200 kgf/cm2 to about 600 kgf/cm2;
- an electrolyte insoluble film adhered to and in direct contact with at least one surface of the first adhesive layer;
- and
- a second adhesive layer formed on the electrolyte insoluble film opposite the first adhesive layer, wherein the second adhesive layer is formed at least 70 wt % of a rubber-based material having a thickness of at least 5 μm,
- wherein the electrolyte insoluble film is at least approximately 6 μm thick and the jelly roll tape is between 20 μm and 40 μm thick,
- wherein the electrolyte insoluble film is interposed between the first and second adhesive layers and is formed of polyethyleneterephthalate (PET).
9 more elements
Dependencies are inferred from the claim text.