Electric machine with an end winding cooling assembly
AssigneeDana Automotive Systems Group, LLC
InventorsSteven Vanhee, Jaywant S. Pawar
Life of this patent
Estimating the term…
Abstract
Systems and methods for electric machine cooling. The electric machine, in one example, includes a cooling assembly with a coolant inlet that flows coolant into a first sealed chamber that is formed around end windings on a first axial side of the electric machine. The cooling assembly further includes a coolant outlet that receives coolant from a second sealed chamber that is formed around end windings on a second axial side of the electric machine and a coolant channel extending through a stator core and in fluidic communication with the coolant inlet and the coolant outlet.
Claims16
An electric machine, comprising:
- a cooling assembly including:
- a coolant inlet that flows coolant into a first sealed chamber that is formed around end windings on a first axial side of the electric machine;
- a coolant outlet that receives coolant from a second sealed chamber that is formed around end windings on a second axial side of the electric machine;
- a coolant channel extending through a stator core and in fluidic communication with the coolant inlet and the coolant outlet;
- an inlet side baffle plate;
- and
- an outlet side baffle plate;
- wherein each of the inlet side baffle plate and the outlet side baffle plate are coupled to the stator core and at least partially surround end windings on the first axial side and the second axial side, respectively;
- and
- wherein the cooling assembly further comprises a deflector positioned within the outlet side baffle plate.
A method for operation of an electric machine, comprising:
- circulating coolant through a coolant inlet and a coolant outlet in a cooling assembly of the electric machine;
- wherein the cooling assembly includes:
- the coolant inlet that flows coolant into a first sealed chamber that is formed around end windings on a first axial side of the electric machine;
- the coolant outlet that receives coolant into a second sealed chamber that is formed around end windings on a second axial side of the electric machine;
- a coolant channel extending through a stator core and in fluidic communication with the coolant inlet and the coolant outlet;
- a first baffle plate that forms at least a portion of the first sealed chamber;
- a second baffle plate that forms at least a portion of the second sealed chamber;
- and
- a deflector positioned within the second sealed chamber and profiled to direct coolant through the end windings on the second axial side of the electric machine.
An electric motor, comprising:
- an immersion cooling assembly including:
- a coolant inlet that flows coolant into a crown-side sealed chamber around end windings on a crown side of the electric motor;
- a coolant outlet that receives coolant into a weld-side sealed chamber around end windings on a weld side of the electric motor;
- a coolant channel extending through a stator core and in fluidic communication with the coolant inlet and the coolant outlet;
- a crown-side baffle plate that forms an enclosure around the crown-side end windings;
- a weld-side baffle plate that forms an enclosure around the weld-side end windings;
- and
- a weld-side deflector positioned within the enclosure of the weld-side end windings and profiled to direct coolant through the weld-side end windings.
Dependencies are inferred from the claim text.