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US 12,184,157 B2Granted
Systems for electric motor cooling
AssigneeDana Automotive Systems Group, LLC
InventorsSteven Vanhee, Joachim Druant, Thibault Devreese
Life of this patent
Estimating the term…
Abstract
Systems are provided for an electronic drive unit. In one example, the electronic drive unit comprises a cooling passage integrally arranged therein, wherein the cooling passage is sealed via laminations of the stator. The laminations are further shaped to jet oil from the cooling passage onto end-windings.
Claims15
A system, comprising:
- an electric drive unit comprising a housing;
- a stator arranged within the housing including first end-windings and second end-windings;
- one or more cooling passages integrally arranged within the stator;
- and
- sealing laminations of a stator lamination stack configured to seal the cooling passage and shape a collection channel thereof, the sealing laminations comprising only a single opening per end-winding, wherein for each of the end-windings, the single opening is positioned radially between the end-winding and an outer circumference of the housing and is configured to jet coolant from the cooling passage to the first and second end-windings, the sealing laminations are at ends of the stator lamination stack, one end of the sealing laminations sandwiched between a first end-winding of the first end-windings and a side surface of the stator, and another end of the sealing laminations is in face-sharing contact with the housing at a same end of the stator lamination stack, the sealing laminations comprising an extreme end lamination of the stator lamination stack;
- wherein the single opening is configured as a partial punch-out in the sealing laminations, wherein the partial punch-out is attached at one extreme end to the sealing laminations, and wherein the partial punch-out is configured as a coolant guidance feature to guide coolant from the single opening to the end-windings.
3 more elements
An electronic drive unit, comprising:
- a housing;
- a stator arranged in the housing and comprising a plurality of cooling passages;
- sealing laminations sandwiched between a first end-winding and a second end-winding and side surfaces arranged at opposite axial ends of the stator, wherein the sealing laminations are further physically coupled to the housing;
- wherein
- the sealing laminations seal the cooling passage and comprises a collection channel at each of the opposite axial ends of the stator, the collection channel extending away from a side surface of the stator toward the housing, wherein cooling fluid collects in the collection channel and is jetted through an opening of the sealing laminations toward the first end-winding and the second end-winding, and wherein the collection channel is shaped via portions of the sealing lamination, the sealing lamination in face-sharing contact with the housing and sandwiched between an end-winding and the stator,
- the sealing laminations comprise only a single opening per end-winding, and, for each of the end-windings, the single opening is positioned radially between the end-winding and an outer circumference of the housing and is configured to jet coolant from the cooling passage to the first and second end-windings, and
- the collection channel is configured to hold the cooling fluid in a space between and directly contacting the stator and the housing.
4 more elements
An electronic drive unit, comprising:
- a housing;
- a stator arranged in the housing and comprising a cooling passage;
- a plurality of laminations sandwiched between a first end-winding and a second end-winding and side surfaces arranged at opposite axial ends of the stator, wherein the plurality of laminations is further physically coupled to the housing;
- wherein
- a lamination of the plurality of laminations seals the cooling passage forming a collection channel directly between the housing and the stator, the collecting channel including an opening configured to jet oil from the collection channel of the cooling passage onto the first end-winding, wherein a portion of the lamination shaping the collection channel extends in a direction normal to a side surface of the stator, and wherein the collection channel is arranged at extreme ends of the cooling passage adjacent to the first end-winding and the second end-winding and shaped via the portion of the lamination, the lamination in face-sharing contact with the housing and sandwiched between an end-winding and the stator, and
- the plurality of laminations comprises only a single opening per end-winding, wherein for each of the end-windings, the single opening is positioned radially between the end-winding and an outer circumference of the housing and is configured to jet coolant from the cooling passage to the first and second end-windings.
3 more elements
Dependencies are inferred from the claim text.