Abstract: Provided is a fabricating apparatus for a secondary battery, the fabricating apparatus including: a base material supplier configured to supply a base material; a winder configured to wind the base material through a mandrel; and a controller configured to control a base material supply amount of the base material supplier and a mandrel rotation amount of the winder, wherein the controller is further configured to store a profile of the base material supply amount with respect to the mandrel rotation amount, and to synchronously control the base material supply amount and the mandrel rotation amount based on the profile.

Abstract: A wire winding device which uses a large-sized supply bobbin, which has a large capacity and a large diameter, to highly precisely suppress a variation in tension which variation occurs when a coil is formed by winding a wire material at high speed with the wire material aligned with a winding frame. Rotation (the number of rotation, and timing) of the supply bobbin relative to rotation of the coil is controlled based on the difference between the amount of take-up of the wire material taken up on the winding frame side and the amount of pay-out of the wire material paid out from the supply bobbin, and the control is performed such that the amount of the take-up and the amount of the pay-out agree with each other every moment. This can highly precisely suppress a variation in tension even if there are large differences between inertia of and the diameters of the coil and the supply bobbin.

Abstract: A mandrel for use in a battery assembly may include a positive mandrel portion and a negative mandrel portion. Each of the mandrel portions may include a connector element coupling region and an electrode coupling region. The connector element coupling region may be configured to be coupled to a connector element and the electrode coupling region may be configured to be coupled to an electrode.

Abstract: A coil winding machine for winding a wire at a plurality of slots of a core of a coil rotor by feeding it out from a nozzle provided at a front end of a flyer, which coil winding machine is provided with a former, a fixed guide, and a movable guide for guiding the wire to the slots for winding and a clamper provided inside the fixed guide and clamping one shaft end of the rotor, the movable guide engaging with the other shaft end of the rotor and able to move in the axial direction of the core.

Abstract: A wire/fiber ring having two layers applied in four clock positions. Each layer includes a first material strand having a first diameter and a second material strand having a second diameter different from the first diameter. A second or any subsequent layer is disposed such that there is unambiguous nesting between strands in adjacent layers. After the array is built-up, wire is over-wrapped around the array to hold it in place during subsequent consolidation steps, which take place after the built-up array is sealed in an air-tight container and evacuated. After heating and application of pressure a wire/fiber array having a void content of about 12% and a fiber content of between about 0% to 70% and preferably between about 30% and 45% can be achieved.

Abstract: A method for assembling electrical windings about an axis, the windings being strips and wound in alternating strata with their widths parallel with the axis, includes the steps: (a) Winding a first-wound winding in a winding path about the axis establishing a first stratum. (b) Arranging the first-wound winding to clear the winding path. (c) Winding one or more next windings to establish next-wound windings in the winding path until at least one next stratum is established. (d) Interleaving earlier-wound windings to establish the plurality of strata; the interleaving including the steps of: (1) rearranging a next-to-be-wound winding to realign with the winding path; (2) winding the next-to-be-wound winding in the winding path until a next stratum is established; (3) arranging the next-to-be-wound winding to clear the winding path; and (4) repeating steps (d)(1) through (d)(3) until the assembling is complete.

Abstract: A shield apparatus for use in conjunction with a well tool to selectively attenuate one or more electromagnetic energy field components as the components interact with the shield. The shield composed of a flexible strip or conductive body and comprising at least one sloped slot or sloped conductive element therein. The shield being adapted to surround an antenna mounted on a well tool. A method for rotating the axis of the magnetic dipole of a transmitter or receiver coil. A method for winding and shielding an electric coil such that the resultant coil emits or receives selected electromagnetic energy field components.