A stator for a wind turbine generator is provided, the stator including a first end plate and a second end plate spaced apart from each other in an axial direction of the wind turbine generator, and a reinforcement structure shaped as a plate and arranged between, and fixed to the first end plate and the second end plate, wherein the reinforcement structure is configured for coupling the first end plate and the second end plate, such that a force is transmissible between the first end plate and the second end plate.

A stator for a wind turbine generator is provided, the stator including a first end plate and a second end plate spaced apart from each other in an axial direction of the wind turbine generator, and a reinforcement structure shaped as a plate and arranged between, and fixed to the first end plate and the second end plate, wherein the reinforcement structure is configured for coupling the first end plate and the second end plate, such that a force is transmissible between the first end plate and the second end plate.

A stator structure is provided and includes a plurality of first lamination layers, a plurality of second lamination layers, two third lamination layers and two oil spraying rings. The second lamination layers are sandwiched in between the first lamination layers. The second lamination layer located in the middle of the stator structure is sandwiched in between the two third lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. Another stator structure is provided and includes a plurality of first lamination layers, a second lamination layer and two oil spraying rings. The second lamination layer is sandwiched in between two first lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. By means of the arrangement of the aforesaid stator structure, the invention can effectively improve heat dissipating effect for oil cooling.

A stator structure is provided and includes a plurality of first lamination layers, a plurality of second lamination layers, two third lamination layers and two oil spraying rings. The second lamination layers are sandwiched in between the first lamination layers. The second lamination layer located in the middle of the stator structure is sandwiched in between the two third lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. Another stator structure is provided and includes a plurality of first lamination layers, a second lamination layer and two oil spraying rings. The second lamination layer is sandwiched in between two first lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. By means of the arrangement of the aforesaid stator structure, the invention can effectively improve heat dissipating effect for oil cooling.

This application provides a motor, including a stator core and a motor housing provided with a distribution groove, a liquid inlet channel, and a liquid outlet channel. The distribution groove is provided on an inner wall of the motor housing, the liquid inlet channel is in communication with the distribution groove and an outer space of the motor housing, and the liquid outlet channel is in communication with an inner cavity and the outer space of the motor housing. An outer wall of the stator core is provided with a stator groove. The stator groove is in communication with both the distribution groove and the liquid outlet channel. The liquid inlet channel, the distribution groove, the stator groove, and the liquid outlet channel are in communication to form a coolant channel.

An electrical machine may include a comprise a rotor, a stator, a coolant distributor chamber and a coolant collector chamber. The rotor may be rotated about an axis of rotation that defines an axial direction of the electrical machine. The stator may comprise a plurality of stator windings. The coolant collector chamber may be axially arranged at a distance from the coolant distributor chamber. The coolant distributor chamber may communicate fluidically with the coolant collector chamber by way of least one cooling channel through which a coolant can flow. The at least one cooling channel and the at least one stator winding may be embedded in a plastic mass consisting of an electrically insulating plastic for thermal coupling to the coolant.

A heat sink (30) for cooling an electric machine (10), includes: a first part of the heat sink (32) in the form of a hollow cylinder, wherein an inner lateral surface includes a groove (34) extending helically with respect to a central axis of the hollow cylinder; a second part of the heat sink (36) in the form of a hollow cylinder, which includes a radially internal fin (38); and a third part of the heat sink (40) in the form of a hollow cylinder, which includes a connecting section (52), in order to accommodate an output shaft (12) of the machine in a rotationally fixed manner. The second part of the heat sink is accommodated, at least partially, in the first part of the heat sink, so that a radially external surface of the second part of the heat sink rests against the groove.

A heat sink (30) for cooling an electric machine (10), includes: a first part of the heat sink (32) in the form of a hollow cylinder, wherein an inner lateral surface includes a groove (34) extending helically with respect to a central axis of the hollow cylinder; a second part of the heat sink (36) in the form of a hollow cylinder, which includes a radially internal fin (38); and a third part of the heat sink (40) in the form of a hollow cylinder, which includes a connecting section (52), in order to accommodate an output shaft (12) of the machine in a rotationally fixed manner. The second part of the heat sink is accommodated, at least partially, in the first part of the heat sink, so that a radially external surface of the second part of the heat sink rests against the groove.

This application provides a motor cooling system of an electric vehicle. In the cooling system, a coil cooling oil passage includes a first oil outlet that is at an end portion of a stator core. A core cooling oil passage and the coil cooling oil passage are sequentially connected. In this case, cooling oil first enters the core cooling oil passage, and then enters the coil cooling oil passage. The core cooling oil passage extends in a circumferential direction of the stator core. The coil cooling oil passage extends in an axial direction of the stator core. A power apparatus drives the cooling oil to enter the core cooling oil passage from an oil inlet, flow through the core cooling oil passage, and enters the coil cooling oil passage from an oil through port. The cooling oil flows back to an oil return groove from the first oil outlet.

This application provides a motor cooling system of an electric vehicle. In the cooling system, a coil cooling oil passage includes a first oil outlet that is at an end portion of a stator core. A core cooling oil passage and the coil cooling oil passage are sequentially connected. In this case, cooling oil first enters the core cooling oil passage, and then enters the coil cooling oil passage. The core cooling oil passage extends in a circumferential direction of the stator core. The coil cooling oil passage extends in an axial direction of the stator core. A power apparatus drives the cooling oil to enter the core cooling oil passage from an oil inlet, flow through the core cooling oil passage, and enters the coil cooling oil passage from an oil through port. The cooling oil flows back to an oil return groove from the first oil outlet.