51 results about "Jelly roll" patented technology

The present invention relates to a strip-shaped electrode used for a cylindrical jelly roll in which a strip-shaped electrode assembly is wound in a cylindrical shape such that a hollow space is formed at a core part thereof, and a lithium secondary battery comprising the same, the strip-shaped electrode comprising: a strip-shaped electrode current collector; a first electrode active material layer formed on at least one surface of the strip-shaped electrode current collector; and a second electrode active material layer formed on the first electrode active material layer, wherein the second electrode active material layer is formed to be shorter than the first electrode active material layer such that the first electrode active material layer has one lengthwise side surface, a part of which is exposed to the outside.

The present invention relates to a method for manufacturing a jellyroll-type electrode assembly, and provides a method for manufacturing an electrode assembly comprising: a notching step for forming a plurality of electrode units by notching each unidirectionally long cathode and anode into a predetermined size and shape, and notching the electrode units so as to be electrically connected to one another by a connecting unit on both ends of the electrode units; a stacking step for forming a unit cell by stacking the cathodes and anodes on one another with a separation film being a boundary; and a winding step for winding the unit cell, by bending the connecting unit so that the electrode units having the cathodes and anodes lie on top of one another. Furthermore, the present invention provides a method for manufacturing a secondary battery using the obtained electrode assembly. In manufacturing the jellyroll-type electrode assembly and polymer secondary battery, the simplification of the production process of which is easy according to the present invention, it is possible to manufacture a jellyroll-type electrode assembly and polymer secondary battery having excellent design flexibility. Furthermore, the purpose of the present invention is to provide an efficient method for processing a separation film used for manufacturing an electrode assembly so as to conform to the shape of the electrode assembly.

The present invention relates to a cylindrical secondary battery configured to have a structure including an adhesive portion containing an adhesive material, a conductive material, and a gas generating material, in order to couple a positive electrode tab of a jelly-roll-type electrode assembly and a cap assembly severing as a positive electrode terminal in a cylindrical secondary battery.

A method for manufacturing a cylindrical battery according to an embodiment of the present invention comprises the steps of: manufacturing an electrode assembly having a jelly-roll structure by preparing a positive electrode plate, a negative electrode plate, and a separator, interposing the separator between the positive electrode plate and the negative electrode plate, and then winding the positive electrode plate, the negative electrode plate, and the separator interposed therebetween; and drying the electrode assembly after the manufacture of the electrode assembly, wherein the step of drying the electrode assembly includes a hot-air circulation drying step.

A battery (30) is disclosed which comprises: a housing (32) containing an electrolyte solution; a plurality of jelly roll electrode assemblies (10) arranged substantially in parallel with each other in contact with the electrolyte solution within the housing (32) thereby forming a single electrochemical system of the battery (30), each jelly roll electrode assembly (10) having a first end (10A) and an opposing second end (10B); and a current collector plate (20); wherein the current collector plate (20) is arranged to be shared among and in direct physical and electrical contact with the first ends (10A) of the plurality of jelly roll electrode assemblies (10).

A battery includes a can, a jelly roll contained in the can, a top insulator contained in the can adjacent to and above the jelly roll, and a battery cap. The battery cap is welded to an inner surface of the can adjacent to and above the top insulator and includes an outer conductive ring, an insulator ring, and a conductive top plate, wherein the outer conductive ring, the insulator ring, and the conductive top plate are crimped together. The battery cap further includes a conductive rupture plate electrically connected to the conductive top plate and a cathode electrically connected to the conductive rupture plate and extending into the jelly roll. The battery may further include an opening in a central portion of the conductive top plate and a central portion of the conductive rupture plate cover welded upon the opening in the central portion of the conductive top plate.

The present invention relates to a cap assembly to be mounted on the open upper end of a cylindrical container in a battery structure in which an electrode assembly (gel roll) of an anode / separator / cathode structure is covered Built in a cylindrical container. The cap assembly includes: a scored safety vent secured so that the safety vent can be ruptured by high pressure gas from the battery; a protruding upper end cap attached along the outer surface of the safety vent; mounted on the upper end cap a liner on an outer surface of the battery; and a fire extinguishing member comprising a fire extinguishing component for preventing fire of the battery, at least a portion of which is mounted at an interface between the upper end cap and the liner.

In one embodiment of the disclosure an electronic device comprising: a display; a first plate having opposing first and second faces, wherein the display is disposed on the first face; a second plate coupled to the second face of the first plate, at least one adhesive layer including a first adhesive layer adhering to the second face of the first plate, a jelly-roll, a roll fixing tape disposed on one region of the jelly-roll, a pouch containing the jelly-roll and the roll fixing tape, wherein the at least one adhesive layer including the first adhesive layer is disposed between and attached to one face of the pouch, and wherein one end of the first adhesive layer and one end of the roll fixing tape face are in the same direction while the first adhesive layer and the roll fixing tape vertically surround the one face of the pouch.

Embodiments of the disclosure provide an electrode assembly including: a jelly roll electrode having a plurality of electrode sheets, the plurality of electrode sheets including an anode sheet, a cathode sheet, and a separator separating the anode sheet from the cathode sheet, an electrolyte disposed between the anode sheet and the cathode sheet of the jelly roll electrode, and a tab projecting from an axial end of the plurality of electrode sheets, the tab including a subsection of the plurality of electrode sheets contacting each other at an axial end of the jelly roll electrode; and a first conductive tab coupled to the tab of the electrode assembly, wherein the first conductive tab is configured to electrically couple the electrode assembly to a battery terminal.