Invention Grant
- Patent Title: Electric motor waste heat mode to heat battery
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Application No.: US15827506Application Date: 2017-11-30
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Publication No.: US10587162B2Publication Date: 2020-03-10
- Inventor: Bozhi Yang , Tomas Vianna Martins , Scott Michael Graves , Ethan Swint , Eric Bellemare , Lev Fedoseyev , Benjamin Dellal , Leif E. Olsen , Alexander Hain
- Applicant: Tesla, Inc.
- Applicant Address: US CA Palo Alto
- Assignee: Tesla, Inc.
- Current Assignee: Tesla, Inc.
- Current Assignee Address: US CA Palo Alto
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Main IPC: H02K9/19
- IPC: H02K9/19 ; H02K1/32 ; H02K5/173 ; H02K7/08 ; H02K11/40 ; H02K9/193 ; H02K9/197 ; H02K1/16 ; H02K1/27 ; H02K3/12 ; H02K5/16 ; H02K11/00

Abstract:
An electric motor includes a case, a stator that includes end-windings, a rotor coupled to the case via at least one rotor bearing, at least one drive motor fluid pump, and drive motor electronics. The rotor includes a hollow cylindrical body, a first shaft portion, and a second shaft portion, a fluid feed tube having a fluid receive end and a fluid feed end, the fluid feed end extending into the hollow cylindrical body, and a plurality of fluid exit ports. The drive motor electronics power the stator with or without causing rotation of the rotor. The drive motor fluid pump pumps fluid into the hollow cylindrical body via the fluid feed tube, pumps the fluid out of the plurality of fluid ports, and onto the stator end-windings to collect heat from the rotor and the stator. The heated fluid may be used for heating a battery.
Public/Granted literature
- US20180083509A1 ELECTRIC MOTOR WASTE HEAT MODE TO HEAT BATTERY Public/Granted day:2018-03-22
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