US 11,722,037 B2
Interior permanent magnet motor having controllable coolant distribution
SeungHwan Keum, Northville, MI (US); Insu Chang, Troy, MI (US); Jun-mo Kang, Ann Arbor, MI (US); and Young J. Kim, Troy, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on May 10, 2021, as Appl. No. 17/315,730.
Prior Publication US 2022/0360144 A1, Nov. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02K 9/19 (2006.01); H02K 3/28 (2006.01); H02K 5/20 (2006.01)
CPC H02K 9/19 (2013.01) [H02K 3/28 (2013.01); H02K 5/203 (2021.01)] 20 Claims
OG exemplary drawing
 
1. An interior permanent magnet motor having controllable coolant distribution, the motor comprising:
a motor housing;
a rotary shaft connected to a rotor, the rotor being rotatably disposed in the housing;
a stator unit disposed in the housing and comprising conductive windings arranged about the rotor, the windings having a straight portion radially extending to an end-turn portion;
an oil sump disposed on the housing above the stator unit, the oil sump comprising a reservoir having an inner side for containment of coolant oil and an outer side arranged above the end-turn portion, the reservoir having at least one aperture formed therethrough over the end-turn portion extending from the straight portion;
a movable nozzle having a first open end extending to a second open end, the first open end connected to the at least one aperture such that the movable nozzle and the reservoir are in fluid communication, the second open end extending from the at least one aperture and positioned adjacently above the end turn portion for coolant distribution;
a connector being movably disposed in the housing proximate to the movable nozzle;
a cam having a first portion extending to a second portion, the first portion being connected to the connector and the second portion being in contact with the nozzle,
wherein, upon movement of the connector, the cam is arranged with the connector to move the second open end of the nozzle over the end turn portion for distribution of coolant oil from the oil sump to the end turn portion.