US 12,283,864 B2
Systems and method for an electric motor with molded coolant jacket and spray ring
Darren J. Ziskovsky, Bowling Green, OH (US)
Assigned to DANA HEAVY VEHICLE SYSTEMS GROUP, LLC, Maumee, OH (US)
Filed by Dana Heavy Vehicle Systems Group, LLC, Maumee, OH (US)
Filed on Aug. 17, 2023, as Appl. No. 18/451,597.
Application 18/451,597 is a continuation of application No. 17/138,692, filed on Dec. 30, 2020, granted, now 11,770,041.
Prior Publication US 2023/0396120 A1, Dec. 7, 2023
Int. Cl. H02K 5/20 (2006.01); B60K 1/00 (2006.01); H02K 7/00 (2006.01); H02K 9/19 (2006.01)
CPC H02K 5/203 (2021.01) [B60K 1/00 (2013.01); H02K 7/006 (2013.01); H02K 9/19 (2013.01); B60K 2001/006 (2013.01); H02K 2205/09 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
flowing a coolant to an annular coolant passage formed between a stator and a coolant jacket molded directly to the stator;
spraying the coolant toward the stator from nozzles formed in a first spray ring of two spray rings, wherein the two spray rings are molded integrally with the coolant jacket, and wherein the two spray rings and the coolant jacket are formed as a single continuous unit from a same material;
flowing the coolant sprayed toward the stator from the nozzles through a plurality of outlet channels that are formed in a second spray ring of the two spray rings,
wherein the plurality of outlet channels each extend radially through the second spray ring of the two integrated spray rings relative to a central axis of the two integrated spray rings,
wherein the annular coolant passage is positioned between the first spray ring and the second spray ring in an axial direction, and wherein the annular coolant passage is a gap formed between an interior surface of the coolant jacket and an outer circumferential surface of the stator, the annular coolant passage fluidly coupled with a plurality of feed channels.