In a method for manufacturing a motor bobbin around which a coil is wound, an insulating sheet and a core material are disposed within the cavity of an injection mold, and the motor bobbin is formed by the injection mold into which a resin is injected. The motor bobbin consists of the insulating sheet and a resin molded body.

The present invention relates to a stator and a motor equipped with the stator, the stator including an inner core including an inner core body and a plurality of teeth radially formed at a periphery of the inner core body; a coil wound on each tooth; an outer core multiply divided to be coupled between the plurality of teeth; and a press-fitting unit formed at the inner core and the outer core to allow the outer core to be press-fitted between the teeth, whereby it is easy to assemble the stator and to wind the coil, thereby reducing a manufacturing cost and enhancing concentricity level between an external diameter and an inner diameter of a stator core.

A stator for an electrical motor or generator and method for manufacturing such stator includes providing a plurality of teeth and joining the teeth with a yoke. An electrically conductive winding is applied around each of the teeth. The teeth and/or yoke may be made from a stack of low-loss magnetic material sheets. The teeth and/or yoke may be made by folding a stack of magnetic material sheets.

Disclosed are various embodiments for assembling a new and improved electrical motor/generator, specifically a method of producing a coil assembly is disclosed comprising: pressing a plurality of individual teeth having interlocking side features, applying a conductor around one of the interlocking side features, coupling a tooth of the coil assembly with an adjacent tooth, applying a second conductor around one of the interlocking side features of the adjacent tooth, repeating the coupling and applying steps until an entire ring has been assembled.

A motor stator includes a stator core and a number of stator windings. The stator core includes a stator yoke and a plurality of stator tooth wrapped by a bobbin formed with an over-molding process, and further correspondingly wound around by stator windings. The stator teeth are connected to an inner surface of the stator yoke. A motor including the above motor stator and a rotor is also provided. The rotor includes a rotor core and a rotary shaft fixed relative to the rotor core. The rotor core is received in the bobbin and in magnetic coupling with the stator teeth.

For cooling an electric machine having stator windings, a housing including a series of interleading compartments is provided, the compartments being adapted for sealingly and removably enclosing one or more of the stator windings, so that during operation of the machine, a fluent coolant passing through the compartments and immersing the windings removes heat from the windings by thermal conduction. The disclosure has application to electric machines such as electric motors and generators, providing a modularised cooling system for the individual stator windings, allowing each one to be removed if necessary without requiring removal of the whole stator winding assembly.

The invention relates to a method for producing an electromagnetic component. In particular, the electromagnetic component to be produced can be a laminated core, for example a stator core or a rotor core, and can be provided for use with an electric machine such as an electric motor.

The method has the following steps: A) providing a metal sheet as a starting material; B) punching out a number of lamellae from the metal sheet; C) heat-treating the lamellae; D) joining the heat-treated lamellae to form the component or a portion of the component.

The invention also relates to an electric machine.

The present disclosure relates to a method for assembling a large-diameter electric motor, the method includes: a preparing step: providing two or more stator segments for forming a stator and two or more rotor support segments for forming a rotor support; a splicing step: splicing the two or more stator segments and the two or more rotor support segments in a predetermined manner to form the stator and the rotor support that are coaxially assembled, respectively, and maintaining a predetermined gap between the stator and the rotor support in a radial direction; and an assembling step: inserting a plurality of magnetic pole modules into the predetermined gap, and assembling the plurality of magnetic pole modules to a mounting surface of the rotor support. The method can avoid the influence of a magnetic pulling force at an air gap between the stator and a rotor on an assembling process, and can improve the convenience of assembling the large-diameter electric motor on site.

A stator is a stator disposed outside a rotor of a motor disposed in a compressor used with a refrigerant containing a substance having a property of causing disproportionation. The stator includes a yoke part and N tooth parts. Each of the N tooth parts includes a tooth end surface to face a rotor. The stator satisfies 0.75≤(θ1×N)/360≤0.97, where θ1 (degrees) is an angle famed by two lines passing through both ends of the tooth end surface and a rotation center of the rotor in a plane perpendicular to an axial direction of the rotor.

A motor armature includes a laminated body including a stack of magnetic bodies each having an annular and plate shape, an extended body that opposes an opposing peripheral surface that is at least one of an inner peripheral surface and an outer peripheral surface of the laminated body and extends along a stacking direction of the magnetic bodies, and a holder stacked on the laminated body in the stacking direction to hold the laminated body. The holder includes a plate portion that extends along the laminated body and has higher rigidity than the magnetic bodies, and a sleeve portion that extends in contact with the extended body.