Temperature sensor, power distribution component having the same, and motor having power distribution component

Patent metadata

Field	Value
Publication number	US-11768114-B2
Application number	US-202017077075-A
Country	US
Kind code	B2
Filing date	Oct 22, 2020
Priority date	Oct 25, 2019
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

A temperature sensor detects temperatures of at least two distribution lines and includes a temperature detection unit and a protection member that covers the temperature detection unit. The protection member is provided with a first abutting surface that has a concave shape corresponding to an outer shape of a first distribution line and is in contact with the first distribution line and a second abutting surface that has a concave shape corresponding to an outer shape of a second distribution line and is in contact with the second distribution line.

First claim

What is claimed is:

1. A temperature sensor that detects temperatures of at least two distribution lines, the temperature sensor comprising:
a temperature detection unit; and
a protection member that covers the temperature detection unit,
wherein the protection member is provided with a first abutting surface that has a concave shape corresponding to an outer shape of a first distribution line and is in contact with the first distribution line and a second abutting surface that has a concave shape corresponding to an outer shape of a second distribution line and is in contact with the second distribution line,
wherein the first abutting surface is provided on a first surface of the protection member,
wherein the second abutting surface is provided on a second surface of the protection member on a side opposite to the first surface, and
wherein, when a virtual line that divides the first abutting surface and the second abutting surface into two halves in a width direction in a transverse section of the protection member is defined as a reference line, the temperature detection unit is arranged at a position offset from the reference line by a predetermined distance in the width direction of the protection member.

2. The temperature sensor according to claim 1 ,
wherein the protection member is made up of a first protection member in which the temperature detection unit is embedded and a second protection member that covers the first protection member.

3. The temperature sensor according to claim 1 , further comprising a lead wire for taking out signals from the temperature detection unit, a part of the lead wire being covered with the protection member and another part thereof being led out to an outside of the protection member,
wherein a lead-out direction of the lead wire with respect to the protection member is the same as a longitudinal direction of the first abutting surface and the second abutting surface.

4. The temperature sensor according to claim 1 , further comprising a lead wire for taking out signals from the temperature detection unit, a part of the lead wire being covered with the protection member and another part thereof being led out to an outside of the protection member,
wherein a lead-out direction of the lead wire with respect to the protection member is different from a longitudinal direction of the first abutting surface and the second abutting surface.

5. A temperature sensor that detects temperatures of at least two distribution lines, the temperature sensor comprising:
a temperature detection unit;
a protection member that covers the temperature detection unit; and
a lead wire for taking out signals from the temperature detection unit, a part of the lead wire being covered with the protection member and another part thereof being led out to an outside of the protection member,
wherein the protection member is provided with a first abutting surface that has a concave shape corresponding to an outer shape of a first distribution line and is in contact with the first distribution line and a second abutting surface that has a concave shape corresponding to an outer shape of a second distribution line and is in contact with the second distribution line, and
wherein a lead-out direction of the lead wire with respect to the protection member is the same as a longitudinal direction of the first abutting surface and the second abutting surface.

6. The temperature sensor according to claim 5 ,
wherein the protection member is made up of a first protection member in which the temperature detection unit is embedded and a second protection member that covers the first protection member.

7. A temperature sensor that detects temperatures of at least two distribution lines, the temperature sensor comprising:
a temperature detection unit;
a protection member that covers the temperature detection unit; and
a lead wire for taking out signals from the temperature detection unit, a part of the lead wire being covered with the protection member and another part thereof being led out to an outside of the protection member,
wherein the protection member is provided with a first abutting surface that has a concave shape corresponding to an outer shape of a first distribution line and is in contact with the first distribution line and a second abutting surface that has a concave shape corresponding to an outer shape of a second distribution line and is in contact with the second distribution line, and
wherein a lead-out direction of the lead wire with respect to the protection member is different from a longitudinal direction of the first abutting surface and the second abutting surface.

8. The temperature sensor according to claim 7 ,
wherein the protection member is made up of a first protection member in which the temperature detection unit is embedded and a second protection member that covers the first protection member.

9. A power distribution component having two or more distribution lines and a temperature sensor that detects temperatures of the distribution lines, the temperature sensor comprising:
a temperature detection unit; and
a protection member that covers the temperature detection unit,
wherein the protection member is provided with a first abutting surface that has a concave shape corresponding to an outer shape of a first distribution line and is in contact with the first distribution line and a second abutting surface that has a concave shape corresponding to an outer shape of a second distribution line and is in contact with the second distribution line.

10. A motor provided with the power distribution component according to claim 9 .

11. The power distribution component according to claim 9 ,
wherein the distribution lines connect windings of a motor and a terminal unit and supply power to the windings.

12. The power distribution component according to claim 11 ,
wherein the two or more distribution lines include two distribution lines constituting a first line pair connected to a U-phase winding of a three-phase motor, other two distribution lines constituting a second line pair connected to a V-phase winding of the three-phase motor, and other two distribution lines constituting a third line pair connected to a W-phase winding of the three-phase motor.

Assignees

• Proterial Ltd
• Hitachi Astemo Electric Motor Systems Ltd

Inventors

• Fukuchi Keisuke
• Sagawa Masanori
• Yokoi Masashi

Classifications

• G01K1/08 Primary

  Protective devices, e.g. casings · CPC title

• G01K1/14

  Supports; Fastening devices; Arrangements for mounting thermometers in particular locations · CPC title

• H02K5/225

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

• H02K11/25 Primary

  Devices for sensing temperature, or actuated thereby · CPC title

• G01K7/22

  the element being a non-linear resistance, e.g. thermistor (G01K7/26 takes precedence) · CPC title