The subject of the disclosure is a method for stacking sheet metal parts (4) composed of an electrical steel strip (3) or sheet in order to form lamination stacks (2), each with a stack height (hp) within a tolerance range (Δh) from a predetermined desired stack height (hs).

The present invention relates to a transformer iron core. The present invention comprises: an upper yoke (50); a lower yoke (51) extending in parallel with the upper yoke (50); and an end leg (60) which is installed between the upper yoke (50) and the lower yoke (51), which extends perpendicularly to the longitudinal direction of the upper yoke (50) and the lower yoke (51), and which is coupled to the upper yoke (50) and to the lower yoke (51). The upper yoke (50) and the lower yoke (51) are made by laminating multiple yoke steel plates (50′). The end leg (60) is also made by laminating multiple leg steel plates (60′). The upper yoke (50) and the lower yoke (51) have leg coupling portions (52) on both ends thereof. The end leg (60) has yoke coupling portions (62) coupled to the leg coupling portions (52).

Provided is a coil component that includes a coil part having a planar coil that includes a winding section and an insulating section covering the winding section, and a magnetic resin layer including a magnetic filler and configured to cover the coil part. The magnetic resin layer has a first magnetic resin layer that is in contact with the coil part and a second magnetic resin layer that is laminated on the first magnetic resin layer. The second magnetic resin layer constitutes a principal surface of the magnetic resin layer, and a maximum particle size of the magnetic filler contained in the second magnetic resin layer is larger than that of the magnetic filler contained in the first magnetic resin layer.

An electronic module comprising electrical components on a circuit board and a molding body disposed on the circuit board to encapsulate the electrical components, wherein a recess is formed in the molding body for exposing an electrode of the electronic module for connecting with an external component.

An inductor that is configured to store energy in a magnetic field includes a wire and a core. The wire is configured to deliver electrical current to the inductor to generate the magnetic field. The core is disposed radially about the wire. The core comprises magnetic particles that are suspended in a non-magnetic matrix. The magnetic particles are arranged such that a magnetic permeability of the core increases in a direction that extends radially outward from the wire along a cross-sectional area of the magnetic core from a first region that is adjacent to the wire to a second region that is adjacent to an outer periphery of the magnetic core.

Provided is a method of manufacturing a laminated core by punching electrical steel strips including an insulation coating to obtain core single sheets and laminating the core single sheets, the method including: pressurizing two or more electrical steel strips using a guide roller to temporarily bond the electrical steel strips immediately before the punching; and obtaining the core single sheets by performing the punching after inserting the two or more electrical steel strips after the temporary bonding into a punching die.

In a method for manufacturing lamination stacks of controlled height in a tool, starting material is provided as continuous strip delivered from a coil or as an individual sheet. Laminations are punched from the starting material in several punching steps to a required contour of the laminations. A heat-curing adhesive is applied onto the laminations prior to performing a last punching step. The laminations are combined to a lamination stack. The laminations of the lamination stack are partially or completely heated in a lamination storage. The adhesive is liquefied by heating the lamination stack to build up adhesion and then solidified. Curing the adhesive at the liquefying temperature or solidifying the adhesive in the tool by cooling and subsequently heating the adhesive to a temperature below the liquefying temperature is possible so that the adhesive does not melt but undergoes further curing resulting in higher temperature stability.

A coil component includes a body having a first surface and a second surface facing each other, and having a plurality of wall surfaces connecting the first surface to the second surface; an insulating substrate; a coil portion comprising a first lead-out pattern and a second lead-out pattern each covered with the body and disposed on the insulating substrate; a first external electrode and a second external electrode disposed on the first surface of the body and spaced apart from each other; a first connection electrode and a second connection electrode respectively extending from the first and second lead-out patterns to the first and second external electrodes; and a first support portion and a second support portion respectively extending from the coil portion to be exposed to one of the plurality of wall surfaces, and respectively disposed to be spaced apart from the first and second lead-out patterns.

A coil electronic component includes a magnetic body having an internal coil part embedded therein, in which the internal coil part includes an insulating substrate, a first insulator, a coil conductor, and a second insulator. The first insulator is disposed on at least one of first and second main surfaces of the insulating substrate and has a groove formed therein. The coil conductor is formed inside the groove. The second insulator encloses the insulating substrate, the first insulator, and the coil conductor. The first insulator may be formed to a thickness larger than (and no more than 40 μm thicker than) a thickness of the coil conductor on the insulating substrate. The first insulator may be formed to a width of 3 μm to 50 μm. Further, the second insulator may extend to a thickness 1 μm to 20 μm larger than that of the first insulator on the insulating substrate.

The invention relates to a method for producing a lamination stack, e.g. a stator package or a rotor package. The method comprises the following steps: A) providing a metal sheet (1) with an adhesive coating; B) transporting the metal sheet in an in-line system comprising a cutting means (4), a separating means (6) and an activation means (5, 5a 5b); C) cutting a molded part (2) with the cutting means (4); D) activating the adhesive coating; E) separating the molded part (2); F) placing the molded part (2); G) repeating steps C) to F), wherein the adhesive coating of some molded parts (8) is provided with a treatment fluid by means of a treatment device (9) in order to allow for target breaking points for separating a molded part stack (3, 3′). In some cases a subsequent compaction can be carried out by a compaction station (7). The invention also relates to a lamination stack and an electric machine.