Motor device

Patent metadata

Field	Value
Publication number	US-11757325-B2
Application number	US-202016996560-A
Country	US
Kind code	B2
Filing date	Aug 18, 2020
Priority date	Aug 27, 2019
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A motor device includes a motor case, an inverter case, a motor, an inverter, and a terminal block. The inverter case is attached to the motor case. The motor is disposed in the motor case. The inverter is disposed in the inverter case. The terminal block is disposed in the inverter case and has a terminal block channel. The terminal block is coupled to an energizing member that extends from the motor. The terminal block channel is configured to guide a coolant.

First claim

The invention claimed is:

1. A motor device comprising:
a motor case;
an inverter case attached to the motor case;
a motor disposed in the motor case;
an inverter disposed in the inverter case, and joined to a cooling plate provided with a first water jacket configured to guide a coolant in the cooling plate to cool the inverter; and
a terminal block disposed in the inverter case, and configured to fix a busbar that extends from the motor and that electrically connects the motor with the inverter to supply an electric power from the inverter to the motor, wherein
the terminal block has a path through which water circulates inside the terminal block, and the path is provided with a second water jacket other than the first water jacket, the second water jacket configured to guide the coolant in the terminal block to cool the terminal block.

2. The motor device according to claim 1 , wherein
the inverter has an inverter channel configured to guide the coolant,
a heat dissipator is coupled upstream of the inverter channel, and
a terminal block channel is coupled downstream of the inverter channel.

3. The motor device according to claim 2 , wherein
the inverter includes a switching device, and
the inverter channel is positioned between the switching device and the motor.

4. The motor device according to claim 3 , wherein the busbar is a metal plate.

5. The motor device according to claim 2 , wherein the busbar is a metal plate.

6. The motor device according to claim 1 , wherein the busbar is a metal plate.

7. A case for a motor device, the case comprising:
a motor case configured to dispose the motor in the motor case;
an inverter case configured to dispose an inverter in the inverter case, and including a cooling plate configured to be joined with the inverter and provided with a first water jacket configured to guide a coolant into the cooling plate to cool the inverter; and
a terminal block disposed in the inverter case, and configured to fix a busbar that extends from the motor and that electrically connects the motor with the inverter to supply an electric power from the inverter to the motor, wherein
the terminal block has a path through which water circulates inside the terminal block, and the path is provided with a second water jacket other than the first water jacket, the second water jacket configured to guide the coolant into the terminal block to cool the terminal block.

Assignees

• Subaru Corp

Inventors

• Morika Hiroki
• Iino Yutaka
• Tanaka Yasufumi
• Mimatsu Hayata

Classifications

• H02K9/19 Primary

  for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil · CPC title

• H02K11/33 Primary

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• H02K5/20 Primary

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

• H05K7/20927

  Liquid coolant without phase change · CPC title

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title