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US 8,940,435 B2Granted
Tape
AssigneeLG Chem, Ltd.
InventorsSung Jong Kim, Byungkyu Jung, Cha-Hun Ku
Life of this patent
Estimating the term…
Abstract
A tape for fixing an electrode assembly and a method of manufacturing a battery are provided. The tape for fixing an electrode assembly can effectively fix an electrode assembly in a can by realizing a 3D shape by means of an electrolyte. Thus, the tape can be useful in preventing the electrode assembly from moving and rotating inside a can by external vibration or impact and also preventing damage of welded regions of a tab or disconnection of inner circuits.
Claims16
A tape for fixing an electrode assembly comprising:
- a substrate layer configured to deform in a longitudinal direction when coming in contact with an electrolyte, wherein the substrate layer is a cast layer prepared from a composition including an active energy ray-polymerizable acrylate compound and a radical-polymerizable diluents, and wherein the active energy ray-polymerizable acrylate compound is urethane acrylate, epoxy acrylate, polyester acrylate or polyether acrylate;
- and
- a pressure-sensitive adhesive layer formed on one surface of the substrate layer in a direction parallel to the longitudinal direction of the substrate layer,
- wherein the pressure-sensitive adhesive layer has a peel strength at room temperature of 100 gf/25 mm to 2000 gf/25 mm, as measured at a peel angle of 180° and a peel rate of 5 mm/sec with respect to an electrode assembly or glass plate, and
- wherein the tape forms a three-dimensional (3D) structure when coming in contact with the electrolyte, the 3D structure having a portion of the tape detached from a surface of the electrode assembly and protruding in a direction vertical to the longitudinal direction.
2 more elements
A tape for fixing an electrode assembly comprising:
- a substrate layer configured to deform in a longitudinal direction when coming in contact with an electrolyte;
- and
- a pressure-sensitive adhesive layer formed on one surface of the substrate layer in a direction parallel to the longitudinal direction of the substrate layer,
- wherein the pressure-sensitive adhesive layer has a peel strength at room temperature of 100 gf/25 mm to 2000 gf/25 mm, as measured at a peel angle of 180° and a peel rate of 5 mm/sec with respect to an electrode assembly or glass plate, and
- wherein the tape forms a three-dimensional (3D) structure when coming in contact with the electrolyte, the 3D structure having a portion of the tape detached from a surface of the electrode assembly and protruding in a direction vertical to the longitudinal direction.
2 more elements
Dependencies are inferred from the claim text.