Terminal connector assembly in overmolded single unit with coil end windings, temperature sensors, and cooling channel

Patent metadata

Field	Value
Publication number	US-10749404-B2
Application number	US-201815869729-A
Country	US
Kind code	B2
Filing date	Jan 12, 2018
Priority date	Jan 12, 2018
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A vehicle electric machine assembly including a stator core and a terminal block is provided. The stator core includes one or more three-phase terminals connected to end windings. The terminal block includes a connector for each of the three-phase terminals. A portion of the end windings extending from the stator core, the three-phase terminals, and the terminal block are overmolded as a single unit such that a portion of each of the connectors is exposed for connection to an inverter. The terminal block may further include one or more threaded apertures, each sized to receive a threaded stud to facilitate an electrical connection between one of the one or more three-phase terminals and the inverter. Each of the one or more three-phase terminals may extend axially along an axis substantially parallel to a central axis of a rotor disposed within a cavity defined by the stator core.

First claim

What is claimed is:

1. A vehicle electric machine assembly comprising:
a stator core including one or more three-phase terminals connected to end windings and extending radially away from the end windings along an axis substantially perpendicular to a central rotating axis of a rotor disposed within a cavity defined by the stator core;
a terminal block including a connector for each of the one or more three-phase terminals, wherein a portion of the end windings extending from the stator core, the one or more three-phase terminals, and the terminal block are overmolded as a single unit such that a portion of each of the connectors is exposed for connection to an inverter, wherein the overmolded single unit completely defines a coolant channel radially spaced away from the end windings such that the overmolded single unit is directly between and separates the end windings and the coolant channel to prevent coolant in the coolant channel from contacting the end windings, and heat from the end windings conducts through the overmolded single unit to the coolant; a controller; and one or more temperature sensors disposed within the overmolded single unit to measure thermal conditions of the end windings and having sensor connectors extending out of the overmolded single unit connected to the controller, wherein the one or more temperature sensors is positioned axially above the coolant channel and below the one or more three-phase terminals, and wherein the controller is programmed to adjust a flow of the coolant responsive to a temperature detection by the one or more temperature sensors of an end winding temperature outside of a predetermined threshold.

Assignees

• Ford Global Tech Llc

Inventors

• Degner Michael W
• Hanumalagutti Prasad Dev
• Leonardi Franco

Classifications

• H02K9/197

  in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator · CPC title

• H01R4/30 Primary

  utilising a screw or nut clamping member (H01R4/50 takes precedence; utilising a clamping member acted on by screw or nut H01R4/38; {for coaxial cables H01R9/0521}) · CPC title

• H02K5/20

  with channels or ducts for flow of cooling medium · CPC title

• H02K5/203

  specially adapted for liquids, e.g. cooling jackets · CPC title

• H02K9/00

  Arrangements for cooling or ventilating (channels or ducts in parts of the magnetic circuit H02K1/20, H02K1/32; channels or ducts in or between conductors H02K3/22, H02K3/24) · CPC title