Abstract: The present invention relates to a battery can, in particular for a rechargeable lithium-ion battery, configured to receive an electrode assembly formed by winding an anode and a cathode that are isolated by a separator, wherein the battery can is configured to be closed by cap assembly. The battery can comprises a cylindrical can body for containing the electrode assembly and has a first end forming a base and a peripheral side wall extending from the base in a longitudinal direction to a second end of the can body comprising an opening, wherein the side wall of the can body ends in an end edge at the second end, and wherein the side wall of the can body is adapted to be crimped inwardly at the second end of the second end to attach a cap assembly that is inserted into the can body opening to the can body. According to the invention, the end edge of the peripheral side wall is formed in an inwardly extending loop into an annular shoulder surrounding the opening.

Abstract: The present invention relates to a battery can, in particular for a rechargeable lithium-ion battery, configured to receive an electrode assembly formed by winding an anode and a cathode that are isolated by a separator, wherein the battery can is configured to be closed by cap assembly. The battery can comprises a cylindrical can body for containing the electrode assembly and has a first end forming a base and a peripheral side wall extending from the base in a longitudinal direction to a second end of the can body comprising an opening, wherein the side wall of the can body ends in an end edge at the second end, and wherein the side wall of the can body is adapted to be crimped inwardly at the second end of the second end to attach a cap assembly that is inserted into the can body opening to the can body. According to the invention, the end edge of the peripheral side wall is formed in an inwardly extending loop into an annular shoulder surrounding the opening.

Abstract: The invention relates to a method for separating off an annular edge portion (2) from a cylindrical, thin-walled hollow article (1), in particular a deep-drawn, cup-shaped hollow article (1), the cylindrical hollow article (1) being turned about its cylinder axis (4) and a laser beam being directed onto the cutting point during the multiple turns until the edge portion (2) is detached from the rest of the hollow article.

Abstract: An improved housing for a galvanic element as a device battery, features an outer cup made of metal or plastic, which outer cup is coated, in particular galvanically, on the inside and outside with nickel or tin or cobalt or with an alloy containing nickel/cobalt, wherein the outer coating is arranged only in the two end areas of the cup, and the outer intermediate area between the two end areas does not have a coating. A method of making the device battery includes the steps of first, forming a substrate into a cylindrical cup shape, then coating all of the cup interior, but only exterior end regions of the cup with a coating of tin, nickel, or cobalt or a nickel- or cobalt-containing alloy, and finally applying an insulating layer along the entire axial exterior length of the cup, leaving the cup bottom free for use as a contact area. Leaving an exterior intermediate region uncoated conserves coating or plating material.

Abstract: Battery cans are produced in a continuous in-line operation from a group of drawing press tools. The streams of parts from each tool are merged into an ordered stream of parts without losing their identity as to the tool that produced them. The parts are automatically inspected and if parts from a particular tool are defective, the other parts from that tool are ejected from the line without ceasing operation of the stream of parts from the remaining tools. The operation continues through packing the parts in containers identified with the tool source of the respective parts.

Abstract: Apparatus for surface treatment of battery cans, including cleaning and electroplating of the interior and exterior surfaces of battery cans as they are transported along a continuously moving production line. The battery cans are automatically loaded from a conveyor onto workpiece holders on a series of circular carriers. Surface processing enclosures operated by cam followers are arranged to enclose the battery cans so that a processing fluid may be automatically injected. The processing fluid may simply be a surface cleansing or drying agent or in the case of electroplating, the processing fluid is a liquid electrolyte so that a plating voltage can be applied to plate either the external or internal surfaces of the battery cans.

Abstract: Process for using coating guns to apply a conductive layer to the inside of battery cans moving on a conveyor with intermittent move and dwell times. Pats are automatically inspected. If a layer is defective due to a disabled coating gun, the process includes firing another coating gun at twice its normal firing rate and/or shifting its position so that it does the job of two coating guns.

Abstract: Battery cans are produced by a group of drawing press tools and merged into a single line of sequential intermediate operations, including a washer/dryer operation and a coating operation. The merge and washer/dryer speeds are established by the fastest drawing press speed. A variable capacity buffer between the washer/dryer and coating line adjusts for temporary overproduction or underproduction of the washer/dryer and sets the speed of the coating line downstream.

Abstract: Process for using coating guns to apply a conductive layer to the inside of battery cans moving on a conveyor with intermittent move and dwell times. Pats are automatically inspected. If a layer is defective due to a disabled coating gun, the process includes firing another coating gun at twice its normal firing rate and/or shifting its position so that it does the job of two coating guns.

Abstract: Battery cans are produced in a continuous in-line operation from a group of drawing press tools. The streams of parts from each tool are merged into an ordered stream of parts without losing their identity as to the tool that produced them. The parts are automatically inspected and if parts from a particular tool are defective, the other parts from that tool are ejected from the line without ceasing operation of the stream of parts from the remaining tools. The operation continues through packing the parts in containers identified with the tool source of the respective parts.

Abstract: A galvanic battery having band-shaped positive and negative electrodes, and an intermediate band-shaped separator, which are helically wound to develop an electrode structure for mounting within a cylindrical housing having a cell pole sealed and insulated against the housing, includes a connecting element which electrically bridges the gap between the cell pole and the edge of the corresponding electrode band and which is comprised of a contact plate having a branched contact clamp concentrically welded to it, an insulation plate positioned over the contact plate and having a centrally disposed aperture for receiving the branched contact clamp, and a pressure spring placed over the insulation plate so that the contact plate presses on the exposed edge of the corresponding electrode band under the influence of the pressure spring, and so that the cell pole is received within the branched contact clamp.