An electrode assembly and a secondary battery are provided. In an exemplary embodiment, an electrode assembly includes: a first electrode plate having a first electrode tab attached thereto; a second electrode plate having at least one second electrode tab attached thereto; and a separator between the first electrode plate and the second electrode plate, the electrode assembly wound in a state in which the first electrode plate, the separator, and the second electrode plate are stacked, and the first electrode plate includes coating portions formed by coating an active material on first and second surfaces thereof, and a half-coating portion formed by coating the active material on only one of the first and second surfaces at a region corresponding to a leading edge, on the basis of a winding direction, where an active material of the second electrode plate begins.

A method of manufacturing a cylindrical includes manufacturing an electrode assembly having a jelly roll structure by preparing a positive electrode plate, a negative electrode plate, and a separator, and by interposing the separator between the positive electrode plate and the negative electrode plate, and then spiral-winding the positive electrode plate, the negative electrode plate, and the separator; and drying the electrode assembly after manufacturing the electrode assembly. The drying of the electrode assembly may include a hot air circulating drying step. A drying apparatus is also provided.

An electrode assembly and a secondary battery are provided. In an exemplary embodiment, an electrode assembly includes: a first electrode plate having a first electrode tab attached thereto; a second electrode plate having at least one second electrode tab attached thereto; and a separator between the first electrode plate and the second electrode plate, the electrode assembly wound in a state in which the first electrode plate, the separator, and the second electrode plate are stacked, and the first electrode plate includes coating portions formed by coating an active material on first and second surfaces thereof, and a half-coating portion formed by coating the active material on only one of the first and second surfaces at a region corresponding to a leading edge, on the basis of a winding direction, where an active material of the second electrode plate begins.

The present application relates to a method and an apparatus for manufacturing an electrode assembly of a secondary battery. Embodiments of the present application propose a method for manufacturing an electrode assembly of a secondary battery, the method comprising joining a positive electrode plate and a first separator to form a positive electrode composite plate body; joining a negative electrode plate and a second separator to form a negative electrode composite plate body; winding the positive electrode composite plate body and the negative electrode composite plate body together to form an electrode assembly, wherein the positive electrode plate and the negative electrode plate are disposed to isolate from each other by the first separator and the second separator.

A pressurized electrochemical battery and process for manufacturing the same, which comprises several connectors to at least one electrochemical cell with several electrical energy collectors that are connected to the connectors, with the electrochemical cell comprising several electrode sheets and several solid electrolyte sheets inserted between the electrode sheets, and at least one deformable chamber arranged in contact with the electrochemical cell, with the deformable chamber supplied with a fluid that deforms the chamber to apply pressure to the electrochemical cell.

This disclosure achieves the object by providing a manufacturing method for an electrode body, the manufacturing method including: a preparing step of preparing an electrode sheet including one separator, a plurality of first electrodes placed on a first surface of the separator, and a plurality of second electrodes placed on a second surface opposite from the first surface of the separator; and a laminating step of laminating the first electrodes and the second electrodes in the electrode sheet alternately via the separator. The electrode sheet satisfies predetermined conditions (i) to (iii) in a plan view in the thickness direction of the electrode sheet. In the laminating step, the first electrodes and the second electrodes are laminated alternately via the separator while the separator placed on a side surface of each of the first electrodes is brought into contact with a wall portion inclined from the vertical direction.

A system for manufacturing an electrode for a secondary battery includes, a mixing unit forming a fibrillated mixture by fibrillating a powder mixture of active material powder, binder powder, and conductive material powder, a forming unit forming a mixture film by the fibrillated mixture, a pressurizing unit uniformizing a thickness of the mixture film by pressurizing rollers to form an electrode component film, first and second winding rolls each supplied and wound with the electrode component film from the pressurizing unit, a base material film roll located between first and second winding rolls and wound with a base material film, and a lamination unit configured to heat and cool to form a junction of the first electrode component film, the base material film, and the second electrode component film that are consecutively stacked.

Computer program product, controller, winding machine and method for winding a winding material from a supply device onto a winding body of a winding machine, wherein the winding material is provided from a supply roller and wound onto the winding body via at least one deflection roller, where an actual winding tension of the winding material is set to a setpoint winding tension depending on a position-dependent compensation signal, stored in a storage unit, to compensate for a changeable free length, resulting from a non-circular cross section of the winding material, of the winding material between the deflection roller and the winding body, whereby due to the fact that the actual winding tension is set to the setpoint winding tension via the position-dependent compensation signal, which is already stored in the storage unit prior to the winding, the computational load for the setting can be reduced.

According to the embodiments, a winding device is a device for manufacturing a winding body obtained by winding a plurality of band bodies including a first band body and a second band body. The winding device includes a core and an adjuster. The core winds a plurality of band bodies thereonto by rotating. The adjuster varies the size of an area of a region between a first position and a second position on an outer circumferential surface of the core, in which the first position is a position at which the first band body starts contacting a member on an inner side thereof, and the second position is a position at which the second band body starts contacting the first band body.

Methods, systems, and compositions for the liquid-phase deposition (LPD) of thin films. The thin films can be coated onto the surface of porous components of electrochemical devices, such as battery electrodes. Embodiments of the present disclosure achieve a faster, safer, and more cost-effective means for forming uniform, conformal layers on non-planar microstructures than known methods. In one aspect, the methods and systems involve exposing the component to be coated to different liquid reagents in sequential processing steps, with optional intervening rinsing and drying steps. Processing may occur in a single reaction chamber or multiple reaction chambers.