Various embodiments relate to a motor in which a structure of an insulator is improved. The motor includes an insulator module coupled to a top face of a stator core. The insulator module includes: each power terminal unit connected to each of 3-phases power lead wires; a neutral terminal unit connected to a neutral point of a coil; and an insulator body for achieving insulations between the power and neutral terminal units and the stator core, and between the power and neutral terminal units, wherein the power terminal unit and the neutral terminal unit are positioned at different vertical levels.

A rotating electric machine wiring member is configured to connect coil ends of a stator and associated electrodes of a terminal block in a rotating electric machine. The rotating electric machine wiring member includes a plurality of electrical conducting wires, and a holding portion configured to hold the plurality of electrical conducting wires together. The holding portion includes a holder, which is provided to cover all respective peripheries of the plurality of electrical conducting wires in respective one parts in a longitudinal direction of the plurality of electrical conducting wires together, and a molded resin section made of a molded resin to cover one part of the holder. Exposed parts of the holder uncovered with the molded resin section are arranged to surround a peripheral edge of the molded resin section.

A rotating electric machine wiring member is configured to connect coil ends of a stator and associated electrodes of a terminal block in a rotating electric machine. The rotating electric machine wiring member includes a plurality of electrical conducting wires, and a holding portion configured to hold the plurality of electrical conducting wires together. The holding portion includes a holder, which is provided to cover all respective peripheries of the plurality of electrical conducting wires in respective one parts in a longitudinal direction of the plurality of electrical conducting wires together, and a molded resin section made of a molded resin to cover one part of the holder. Exposed parts of the holder uncovered with the molded resin section are arranged to surround a peripheral edge of the molded resin section.

Methods and systems for cooling an electric motor are provided. An electric motor cooling system, in one example, includes a stator with a first end winding on a first axial side, potting material at least partially enclosing the first end winding, and a plurality of coolant passages adjacent to the stator, where at least a portion of the plurality of coolant passages are adjacent to the potting material. The electric motor cooling system also includes a coolant passage housing including a plurality of fins defining a portion of the boundaries of the plurality of coolant passages and in face sharing contact with an outer surface of the stator.

Stator for an electrical machine, comprising a stator core with stator slots which are formed along an axial direction with respect to a center axis of the stator and are arranged in a manner distributed in a circumferential direction with respect to the center axis, a hairpin winding with a large number of hairpin element arrangements which are arranged in the stator slots and each emerge from the end side of the stator core, and at least one insulation apparatus with a body in which a large number of passage openings which are arranged in a manner distributed in the circumferential direction are formed; wherein a respective hairpin element arrangement passes through one of the passage openings and the insulation apparatus specifies a distance of the hairpin element arrangement from an edge of the stator slot which receives the hairpin element arrangement.

Presented are oleophilic surface treatments for electric machines, methods for making/using such electric machines, and vehicles employing traction motors having stator windings with oleophilic treatments on select surfaces. An electric machine includes an outer housing with a direct-cooling thermal management system fluidly connected to the housing to circulate thereto a coolant fluid. A stator assembly, which is attached to the housing, includes a stator core with one or more electromagnetic windings mounted to the stator core. A rotor assembly is movably mounted to the hosing adjacent the stator assembly. The rotor assembly includes a rotor core with one or more magnets mounted to the rotor core spaced, e.g., across an air gap, from the winding(s). Select components of the stator assembly have a target surface with an oleophilic surface treatment that enlarges the target surface's wetted area and increases a coolant mass of the coolant fluid contacting the target surface.

A power tool is provided including a gear case having a spindle, a motor case connected to a rear end of the gear case along a longitudinal axis; a handle portion extending from a rear end of the motor case along the longitudinal axis; a motor housed inside the motor case; a fan in rotational connection with the motor; at least one air intake arranged at least one of the motor case or the handle portion near the rear end of the motor case; and a power module including power switches for driving the motor and a heat sink. The power module is housed in at least one of the motor case or the handle portion near the rear end of the motor case such that rotation of the fan causes air flow to enter through the air intake and flow near the heat sink and through the motor.

A motor includes a rotor, a stator that surrounds the radial outer side of the rotor, a housing that contains the rotor and the stator, a holder axially above the stator, a substrate fixed to the axial upper side of the holder, and a connector radially outward of the housing and electrically connected to the substrate. The holder includes a holder body, and a holder protrusion that connects to the holder body and extends radially outward from the housing. The connector contacts the underside of the holder protrusion.

A motor includes a rotor, a stator that surrounds the radial outer side of the rotor, a housing that contains the rotor and the stator, a holder axially above the stator, a substrate fixed to the axial upper side of the holder, and a connector radially outward of the housing and electrically connected to the substrate. The holder includes a holder body, and a holder protrusion that connects to the holder body and extends radially outward from the housing. The connector contacts the underside of the holder protrusion.

A vehicle electric machine assembly including a stator core and a terminal block is provided. The stator core includes one or more three-phase terminals connected to end windings. The terminal block includes a connector for each of the three-phase terminals. A portion of the end windings extending from the stator core, the three-phase terminals, and the terminal block are overmolded as a single unit such that a portion of each of the connectors is exposed for connection to an inverter. The terminal block may further include one or more threaded apertures, each sized to receive a threaded stud to facilitate an electrical connection between one of the one or more three-phase terminals and the inverter. Each of the one or more three-phase terminals may extend axially along an axis substantially parallel to a central axis of a rotor disposed within a cavity defined by the stator core.