Abstract: A motor cooling device includes: an oil passage, provided in a stator formed by laminating a plurality of steel plates, serving as a conduit for a cooling oil. Further, the oil passage is formed by a plurality of oil holes, which are formed in the steel plates and are overlapping with each other in a laminating direction of the steel plates, and the oil passage is formed by an offset collision wall formed by shifting the oil holes in a direction orthogonal to the laminating direction and overlapping the oil holes.

Abstract: A stator for an electric machine is specified in which electrical conductors of a stator winding are arranged, layered only radially in a plurality of layers, in a stator slot. Two stator slots which are arranged next to one another are combined to form blocks (G) of one phase (U, V, W). In the blocks (G), positions occupied by the electrical conductors are described by column numbers S and layer numbers L which are defined by a start position and incremental values. Also specified are an electric machine having such a stator and a vehicle having such an electric machine.

Abstract: The present disclosure relates to a rotor for an electric motor, including: —a rotor shaft mounted so as to rotate about an axis; —a stack of laminations mounted coaxially on the rotor shaft, said stack of laminations including internal cavities housing permanent magnets; —a front flange and a rear flange mounted coaxially on the rotor shaft and arranged axially on either side of the stack of laminations so as to be contiguous with the front and rear side faces, respectively, of the stack of laminations; —flow channels for a cooling fluid, which are formed respectively inside the shaft, the front and rear flanges, and the permanent magnets.

Abstract: Provided are a coil capable of enhancing heat dissipation performance and/or voltage resistance, and a stator and a motor using the coil. A coil includes a helical structure body made of strip-shaped flat conductors that are continuously joined into a helical form. In the helical structure body, a first turn of helix is separated from a second turn, which is continuous to the first turn, at a preset interval.

Abstract: An electric motor may include a rotor assembly including a rotor shaft defining a rotational axis. An electric motor may include a stator assembly including a core, an insulator at least partially covering the core, and a plurality of windings, the insulator defining one of a post that protrudes in an axial direction parallel with the rotational axis or a receptacle in which the post is receivable. An electric motor may include a bus bar assembly including a non-conductive body and a plurality of conductors configured to make an electrical connection between at least two windings of the plurality of windings, the non-conductive body including the other of the post or the receptacle, wherein the receptacle includes at least one of an aperture or a recess, and wherein the post is received within the receptacle to secure the non-conductive body to the insulator.

Abstract: A rotary electrical machine includes a stator and a rotor. The stator includes a plurality of iron cores that are annularly disposed, windings that are wound to each of the plurality of iron cores, connection terminals to which the windings are connected to, and molded members that partially cover the plurality of iron cores and the windings. The rotor rotates around an axis that coincides with a circular center of the plurality of iron cores. The molded members have resin portions that cover the plurality of iron cores and the windings, and a plurality of exposed terminal portions that expose the connection terminals.

Abstract: In accordance with an embodiment, a drive motor includes a carrier comprising a lens installation hole configured to have an optical lens installed therein; a coil located on an outer side of the carrier; and a coil heat dissipation structure located between the carrier and the coil, wherein the coil heat dissipation structure is fastened to the carrier, and the coil is fastened to and is in thermal conduction with the coil heat dissipation structure.

Abstract: In a stator assembly configured to respond to a voltage difference between coils in the same slot in a coil winding part, the coil for each phase includes a first half-coil winding and a second half-coil winding formed by connecting hairpins in series between an outermost layer and an innermost layer in the radial direction of a stator core. A coil end portion disposed in the outermost layer in the radial direction of the stator core in one of the first half-coil winding and the second half-coil winding and a coil end portion disposed in the innermost layer in the radial direction of the stator core in the other one of the first half-coil winding and the second half-coil winding are connected in series by a conductive member.

Abstract: A motor apparatus including a stator having a plurality of teeth formed in a circumference thereof, a rotor rotatably installed in the stator, and having a plurality of magnets disposed in a circumference thereof, and a 3-phase coil part having a plurality of coils wound around the teeth, respectively, in which the coils having a preset phase difference are arranged in parallel.

Abstract: A bus assembly, an electrical motor, an electric power steering system, and a vehicle are provided. The bus assembly has multiple bus bars axially spaced along an electrical motor. Each bus bar has multiple bus segments arranged along the circumferential direction of the electrical motor. The bus segments of one of the bus bars have the same structure.

Abstract: A method for producing a single- or multi-layer coil, includes the steps of: providing a flat wire; deforming the flat wire along a deforming direction in order to produce one or more winding sections which are designed to be offset relative to a starting section of the flat wire, wherein the one or more winding sections are designed to form coil layers which run on winding planes arranged in an offset manner relative to the deforming direction; and winding the one or more winding sections on the respective winding plane in order to form one or more coil layers.

Abstract: A stacked plate stator device including a stator body with a plurality of stator teeth, a plurality of winding assemblies, each including a plurality of conductive plate assemblies interleafed and stacked one upon the other with each adjacent plate assembly, including first and second sub-plates and having a single continuous path of conductivity through the stator winding. Also disclosed is a stacked electrical device with a device housing, a stacked plate stator device, and an electrical rotor.

Abstract: A rotary electric machine comprises a rotor and a stator, wherein one of the rotor and the stator includes: a groove portion that is formed on a circumferential surface facing the other of the rotor and the stator and extends in a direction that intersects with a circumferential direction, and a covering portion made of resin that covers the groove portion. The groove portion includes a retention portion that is formed such that a groove width at a second position is wider than a groove width at a first position, wherein the second position is separated in a radial direction from an opening farther than the first position. The retention portion is configured so as to prevent removal of the covering portion by engaging with resin material that is filled in the groove portion.

Abstract: Disclosed herein is a bus bar assembly. The bus bar assembly according the present embodiment includes a plurality of arc-shape body portions provided with different lengths and disposed to be layered in a radial direction, coil connection portions formed integrally with the body portions and provided at predetermined intervals on outer peripheral surfaces of the body portions, and connected to a stator coil, and terminals formed integrally with the body portions and protruding from one end side of each of the body portions in an axial direction, and disposed to be layered in a horizontal direction, wherein one or more groove portions are provided in at least one of the terminals so that wire resistance values between the body portions are equalized.

Abstract: An electric machine may include an stator and a rotatable rotor. At least one of the stator or the rotor may include a plurality of multi-part trapezoidal teeth with an electromagnetic coil disposed around each tooth.

Abstract: An arrangement of a contact element on free coil conductor ends of an electric machine is provided. At least one coil conductor end is inserted into an insertion opening of an assigned contact sleeve on the contact element and is welded to the contact sleeve. The contact element is configured to connect at least two coil conductor ends and/or electrically connect the at least one coil conductor end to at least one phase conductor, and the at least one coil conductor end lies against a wall which delimits the insertion opening of the contact sleeve on the inside over the entire circumference of the coil conductor end at least in a longitudinal region in the insertion direction of the coil conductor end into the contact sleeve.

Abstract: A DC brushless motor is provided, which includes a housing, a motor assembly, a control board and a dividing plate. Wherein, the motor assembly is arranged in the housing, and a connecting terminal is arranged on it. The control board is arranged in the housing and electrically connected with the connecting terminal. The dividing plate is arranged in the housing and is used to divide the motor assembly from the control board. The disclosure is used to solve a problem of complicated internal wiring of a motor caused by a division of the motor and a controller of the conventional DC brushless motor.

Abstract: A power tool having a motor is provided, wherein the motor includes a rotor and a stator, and wherein the stator includes a first winding and a second winding, wherein the windings are designed in such a way that the windings allow operation of the motor of the power tool at substantially full speed, but at substantially half the power compared with the comparison motor. In the comparison motor, the stator coils are substantially completely wrapped with a continuous wire layer. method for operating such a power tool and a method for carrying out charge equalization between two accumulators in a power tool is also provided. The double-wound stator can be used in conjunction with a bridge circuit made up of motor inverters and stator coils to allow charge equalization between two accumulators in a power tool.

Abstract: A stator for a rotating electric machine includes: a stator core provided with slots arranged in a circumferential direction such that the slots are formed in two or more layers in a radial direction; and coils each having an inserted portion positioned inside the slots, and terminal end portions protruding from one end side and another end side of the stator core in an axial direction; wherein the coils include first coils formed to have a straight-line shape at their terminal end portions, second coils inclined in the circumferential direction at a predetermined angle with respect to an end face of the stator core at the one end side or the other end side of the terminal end portions, and third coils inclined in the circumferential direction at a predetermined angle with respect to the end face of the stator core at the one end side and the other end side of the terminal end portions, and the first coils, the second coils, and the third coils are connected to each other at their respective end portions to f

Abstract: A high-voltage bus bar for electrically contacting an electrical, optionally insulated, line with two mutually adjacent, distal end portions of a ring conductor. The high-voltage bus bar includes, in the region of its first distal end, a terminal for connection to the electrical line, and its second distal end bifurcates into at least two prongs in such way that each of the at least two fork prongs forms a separate contact face which is provided to be integrally bonded to one of the distal end portions of the ring conductor.