A motor includes a stator; and a rotor that rotates around a central axis extending upward and downward and that has a magnet disposed at an inner side in a radial direction of the stator; and a circuit board that is disposed at one of one side and the other side in the axial direction of the stator and that controls rotation of the rotor. The stator includes a ring-shaped core back, a plurality of teeth extending inward in the radial direction from an inner peripheral surface of the core back and disposed in a circumferential direction, and a coil wound around each of the teeth. The circuit board has a board protrusion protruding outward in the radial direction with respect to an outer peripheral surface of the core back. A bus bar that is connected to an extended wire of the coil is disposed on an end portion in the axial direction of the core back, at a side at which the circuit board is disposed. The bus bar has a board connection terminal that is connected to the board protrusion. The board connection terminal is disposed at an outer side in the radial direction with respect to the outer peripheral surface of the core back.

A motor includes a stator; and a rotor that rotates around a vertically extending central axis and has a magnet at an inner side in a radial direction of the stator. The stator includes a ring-shaped core back, teeth extending inward in the radial direction from an inner peripheral surface of the core back and disposed in a circumferential direction, and a coil wound around each tooth. A bus bar electrically connected to the coil is disposed on an end portion at a side in an axial direction of the core back. The bus bar has an extended-wire connection portion connected to an extended wire of the coil, and in plan view, disposed at the inner side in the radial direction with respect to the inner peripheral surface of the core back, between the teeth adjacent in the circumferential direction.

Aspects and embodiments disclosed herein include a highly efficient electric motor which can be embodied in several configurations, including a standard motor, a hub motor, a linear motor, or other motor configuration. In one example, there is provided a motor comprising a rotor including a plurality of magnets and a stator including at least one coil module, the at least one coil module including a plurality of coils of conductive material, the plurality of coils arranged horizontally displaced from one another and retained in a matrix material of the at least one coil module.

A stator assembly for a BLDC motor includes a stator core, at least one magnet wire wound on poles of the stator core, an end insulator mounted on an end surface of the stator core, a non-conductive mount member mounted on the outer circumferential surface of the stator core, and conductive terminals mounted on the non-conductive mount member. Each conductive terminal includes: a main portion mounted on the non-conductive mount, a tang portion extending from a first longitudinal end adjacent the end insulator and folded over the main portion, and a connection tab extending angularly from a second longitudinal end. A contact portion of the magnet wire is wrapped around the tang portion and fused to make an electric connection to the conductive terminal.

An axial field rotary energy device can include a rotor having an axis of rotation and a magnet; a stator coaxial with the rotor, the stator can have a printed circuit board (PCB) having a plurality of PCB layers that are spaced apart in an axial direction, each PCB layer can include a coil having only two terminals for electrical connections, each coil is continuous and uninterrupted between its only two terminals, each coil consists of a single electrical phase, and one of the two terminals of each coil is electrically coupled to another coil with a via to define a coil pair; and each coil pair is electrically coupled to another coil pair with another via.

An axial field rotary energy device can include a rotor comprising an axis of rotation and a magnet. In addition, a stator can be coaxial with the rotor. The stator can include a plurality of stator segments that are coupled together about the axis. Each stator segment can include a printed circuit board (PCB) having a PCB layer comprising a coil. Each stator segment also can include only one electrical phase. The stator itself can include one or more electrical phases.

An axial field rotary energy device can include a housing having coupling structures configured to mechanically couple the housing to a second housing of a second module. In addition, the housing can include electrical elements configured to electrically couple the housing to the second housing. A rotor can be rotatably mounted to the housing. The rotor can include an axis and a magnet. A stator can be mounted to the housing coaxially with the rotor. The stator can include a printed circuit board (PCB) having a PCB layer comprising a coil.

An axial field rotary energy device can include a housing. A rotor can be mounted inside the housing. The rotor can include an axis of rotation and a magnet. A stator also can be mounted inside the housing coaxial with the rotor. The stator can include a printed circuit board (PCB) having a PCB layer with a coil. A sensor can be integrated within the housing. The sensor can be configured to monitor, detect or generate data regarding operation of the axial field rotary energy device.

An axial field rotary energy device can include a rotor having an axis of rotation and magnets. Each magnet can extend in a radial direction relative to the axis. Each magnet can include a magnet radial edge. The device also includes a stator that is coaxial with the rotor. The stator has printed circuit board (PCB) layers each having coils. Each coil has a coil radial edge. When the radial edge portions of the magnets and the coils rotationally align relative to the axis, the magnet radial edges and the coil radial edges are not parallel and are angularly skewed relative to each other.

An axial field rotary energy device can include a housing. A rotor can be mounted inside the housing. The rotor can include an axis of rotation and a magnet. A stator can be mounted inside the housing coaxial with the rotor. The stator can include a printed circuit board (PCB) having a PCB layer with a trace that is electrically conductive. The trace can include radial traces that extend in a radial direction relative to the axis and end turn traces that extend between the radial traces. The trace can include slits that extends through at least some portions of the trace.