The invention relates to a method and a device for producing laminated cores (2) from laminations (1), in which an adhesive medium is applied as at least one adhesive point (22) to the top of the surface of a sheet metal insulation (21) of a sheet metal strip (5), which is guided horizontally with respect to the direction of gravity, by means of an application unit (35) via an application head (32). Advantages for the structure and function result from the fact that the adhesive medium is transferred as at least one adhesive point (22) to the surface of the sheet metal insulation (21) of the sheet metal strip (5) or a lamination (1) cut from this strip without movable components in the application head (32), the application head (32) being moved perpendicularly relative to the surface of the sheet metal strip (5) in order to transfer the adhesive medium in the form of the at least one adhesive point (22).

A method for manufacturing a motor core includes forming multiple blocks and forming the motor core. When a first separator plate is stacked on iron core pieces, a tab of the first separator plate is aligned with tabs of the iron core pieces. When a second separator plate is stacked on the first separator plate, a tab of the second separator plate is aligned with a through-hole of the first separator plate. When the iron core pieces are stacked on the second separator plate, the tabs are aligned with the tab of the second separator plate. The forming the motor core includes: stacking the blocks such that the tab of the first separator plate of one of any two blocks adjacent to each other and the tab of the second separator plate of the other block overlap with each other; and in this state, joining the blocks together.

A method for manufacturing a motor core includes forming multiple blocks and forming the motor core. When a first separator plate is stacked on iron core pieces, a tab of the first separator plate is aligned with tabs of the iron core pieces. When a second separator plate is stacked on the first separator plate, a tab of the second separator plate is aligned with a through-hole of the first separator plate. When the iron core pieces are stacked on the second separator plate, the tabs are aligned with the tab of the second separator plate. The forming the motor core includes: stacking the blocks such that the tab of the first separator plate of one of any two blocks adjacent to each other and the tab of the second separator plate of the other block overlap with each other; and in this state, joining the blocks together.

Systems and methods are provided for a coated lamination layer for an electric motor. The coated lamination layer includes a lamination layer base of annular shape defined by an inner edge and an outer edge with a plurality of radially arranged slot openings and a plurality of radially arranged channel openings, and a sealing layer protruding from a surface of the lamination layer base, wherein the sealing layer is a screen-printed coating. The coated laminations layers are stacked into a stator with the sealing layers sealing regions between the lamination layer bases.

Systems and methods are provided for a coated lamination layer for an electric motor. The coated lamination layer includes a lamination layer base of annular shape defined by an inner edge and an outer edge with a plurality of radially arranged slot openings and a plurality of radially arranged channel openings, and a sealing layer protruding from a surface of the lamination layer base, wherein the sealing layer is a screen-printed coating. The coated laminations layers are stacked into a stator with the sealing layers sealing regions between the lamination layer bases.

A laminated core, more particularly for a stator of an electric machine, and method for producing said laminated core. The laminated core has several layers stacked one atop another, wherein the layers are each made up of either an individual sheet metal part or several sheet metal parts positioned next to one another and each sheet metal part has a protrusion and with the aid of these protrusions, the layers engage with one another. It is proposed, in the case of a single sheet metal part making up a layer, for the protrusion to be embodied as completely surrounding the longitudinal axis of the laminated core or, in the case of several sheet metal parts positioned next to one another making up a layer, for the protrusions of these sheet metal parts to be embodied as combining to completely surround the longitudinal axis of the laminated core.

A laminated core, more particularly for a stator of an electric machine, and method for producing said laminated core. The laminated core has several layers stacked one atop another, wherein the layers are each made up of either an individual sheet metal part or several sheet metal parts positioned next to one another and each sheet metal part has a protrusion and with the aid of these protrusions, the layers engage with one another. It is proposed, in the case of a single sheet metal part making up a layer, for the protrusion to be embodied as completely surrounding the longitudinal axis of the laminated core or, in the case of several sheet metal parts positioned next to one another making up a layer, for the protrusions of these sheet metal parts to be embodied as combining to completely surround the longitudinal axis of the laminated core.

An axial flux stator core (50) and a manufacturing thereof is proposed. The axial flux stator core (50) has a spirally layered structure (24), wherein the axial flux stator core (50) comprises a metal strip (14) having a longitudinal first side (16) and a longitudinal second side (18) and that is wound to form the spirally layered structure (24). The first side (16) of the metal strip (14) has a plurality of slots (20) having a slot width that vary along the metal strip (14), the first side (16) forms a plurality of stator teeth (26), the slots (20) define a tooth separation between each pair of neighboring stator teeth (26), and the second side (18) forms an annular stator yoke (28) connecting the stator teeth (26).

An axial flux stator core (50) and a manufacturing thereof is proposed. The axial flux stator core (50) has a spirally layered structure (24), wherein the axial flux stator core (50) comprises a metal strip (14) having a longitudinal first side (16) and a longitudinal second side (18) and that is wound to form the spirally layered structure (24). The first side (16) of the metal strip (14) has a plurality of slots (20) having a slot width that vary along the metal strip (14), the first side (16) forms a plurality of stator teeth (26), the slots (20) define a tooth separation between each pair of neighboring stator teeth (26), and the second side (18) forms an annular stator yoke (28) connecting the stator teeth (26).

The invention relates to a stator (ST) for an electric machine (EM) of an at least partially electrically driven motor vehicle (KFZ), comprising

an annular yoke (JO) with an inner side (IS) oriented inward in the radial direction, and a stator tooth (SZ), which is positively connected to the yoke (JO) and has a tooth shank (ZS) and a tooth head (ZK) adjoining the tooth shank (ZS), characterized in that a connecting projection (VV) oriented inward in the radial direction is formed on the inner side (IS) of the yoke (JO), and a connecting recess (VA) is formed on an end face (SS) of the tooth shank (ZS) that is formed on a side facing away from the tooth head (ZK), and, to obtain the positive connection, the connecting projection (VV) engages at least partially and/or in some portion or portions in the connecting recess (VA).