An electric machine includes a stator having a plurality of stator teeth. Each stator tooth of the plurality of stator teeth includes a winding disposed there around. Each stator tooth of the plurality of stator teeth is shaped to receive a plurality of microchannels. The microchannels contain a circulating heat-transfer fluid; Each stator tooth of the plurality of stator teeth is thermally exposed to the heat-transfer fluid via the plurality of microchannels so as to effectuate heat removal from each stator tooth of the plurality of stator teeth.

The present invention relates to a module for cooling a heating element and a motor including the same. The module for cooling the heating element, according to the present invention, can comprise: a flat plate-shaped heat pipe containing working fluid therein, coming into close contact with the heating element, and including a condensation region which does not come into contact with the heating element; and a cooling channel connected to the condensation region, and cooling the heat pipe by a refrigerant.

An electric machine includes a stator and a rotor configured to be driven in rotation in relation to one another. The rotor includes a plurality of permanent magnets, and the stator further includes a magnetic circuit including poles extending toward the rotor. The machine includes windings of conducting elements around each pole and at least one heat sink arranged inside a conducting element and/or between the conducting elements. The heat sink includes a phase change material.

A linear motor device includes a track member with multiple magnets with alternating N poles and S poles arranged along the moving direction, and a moving body with a configuration which includes an armature which is movably mounted on the track member; and the device generates a driving force in the moving direction between the magnetic flux created armature and the magnets of track member. The armature also includes a heat conduction member arranged in cooling passages formed in cores of the armature. By this, coils on the moving body side are cooled efficiently, and a large driving force can be achieved by passing a large current as well as maintaining a large space for winding the coils in order to increase the winding count.

A stator assembly includes a stator core including teeth, which are formed along an inner circumferential surface of the stator core, extend from one surface of the stator core to an opposite surface of the stator core, and have through holes formed through one surfaces of the teeth, respectively, a plurality of hairpins, each hairpin coupled to and connected with a slot formed between the teeth facing each other and forming form a coil winding, and a heat radiating device including a first heat radiating member provided at one side of the one surface of the stator core to discharge heat of the hairpin to an outside, such that the hairpin is cooled.

A wet cavity electric machine includes a stator core having stator poles formed by a post and a wire wound about the post to form a stator winding, with the stator winding having end turns, a rotor having two rotor poles and configured to rotate relative to the stator and a channel for liquid coolant to flow through the rotor to at least one nozzle, and liquid coolant sprays from the at least one nozzle at least a portion of the stator windings.

A vehicle wheel assembly comprises a wheel for mounting a tire thereon and having an inner space; and an in-wheel motor mounted in the inner space of the wheel and comprising: a rotor connected to the wheel and configured to rotatable relative to a stator, the stator configured to drive the rotor, an electronic device comprising a circuit board and electronics mounted on the circuit board and configured to control the in-wheel motor, two-phase dielectric material, and covers coupled with the stator to form a hermetic enclosure. The electronic device and the two-phase dielectric material are contained in the hermetic enclosure formed by the wall of the stator and the covers coupled with stator, and the two-phase dielectric material is in contact with the wall of the stator and the electronic device to cool the stator and the electronic device by transitioning between a liquid phase and a gaseous phase, conduction, and convection.

A heat dissipation device applied to a heat source includes a heat conduction unit and a power generation unit. A fluid chamber and a rotor chamber are configured inside the heat conduction unit. The fluid chamber and the rotor chamber are communicated with each other. A working fluid is configured in the fluid chamber. The power generation unit has a rotor and a power generation module. The rotor is connected to the power generation module and is configured in the rotor chamber. The rotor is driven by the working fluid so as to enable the power generation unit to output electrical energy. An electronic system with the heat dissipation device is also disclosed.

An electric motor cooling structure includes: a shaft; a rotor arranged on an outer circumference of the shaft; a stator arranged on an outer circumference of the rotor; a magnet received by the rotor; a coolant passage formed on an inner side of the magnet in a radial direction of the shaft; and a heat pipe arranged between the coolant passage and the magnet. The heat pipe includes: a first tubular portion extending in the radial direction of the shaft from a side of the coolant passage to a side of the magnet; and a second tubular portion communicating with an end of the first tubular portion on the side of the magnet and extending in an axial direction of the shaft.

An electric motor arrangement for a pump includes power electronics for control of the electric motor driving the pump. For cooling of the electric motor and/or the power electronics, media from a pump chamber of the pump casing flows through a suction-side connection, a coolant channel associated with the power electronics and/or of the electric motor, to a pressure-side connection of the pump. The flow in the coolant channel may be controlled by a thermostat valve.