Sensor device, electrical device having a sensor device, and vehicle having a sensor device

Patent metadata

Field	Value
Publication number	US-12332086-B2
Application number	US-202017785131-A
Country	US
Kind code	B2
Filing date	Oct 27, 2020
Priority date	Dec 19, 2019
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

In an embodiment a sensor device includes a sensor element in a housing, wherein a mechanical fastening element is arranged and fastened to the housing, the mechanical fastening element including a spring element, wherein the housing includes a plastic having a liquid crystal polymer filled with boron nitride, and wherein the housing includes a base part and a cover part connected to each other, and a cavity in which the sensor element is arranged.

First claim

The invention claimed is:

1. A sensor device comprising:
a housing comprising a base part and a cover part connected to each other;
a sensor element arranged in a cavity of the housing; and
a mechanical fastening element arranged and fastened to the housing, the mechanical fastening element comprising a spring element,
wherein the housing comprises a plastic based on a filled liquid crystal polymer, and
wherein the filled liquid crystal polymer is filled with boron nitride.

2. The sensor device according to claim 1 , wherein the sensor element is a temperature sensor element.

3. The sensor device according to claim 1 , wherein the mechanical fastening element comprises a detent element.

4. The sensor device according to claim 1 , wherein the housing comprises at least one mounting guiding comprising one or more inclined insertion surfaces.

5. The sensor device according to claim 1 , wherein the housing is one piece.

6. The sensor device according to claim 1 , wherein the cavity comprises at least partially a potting material.

7. The sensor device according to claim 1 , wherein all materials of the sensor device comprise a temperature stability so that they are usable at temperatures at least in a region of greater than or equal to −40° C. and less than or equal to 200° C.

8. The sensor device according to claim 1 , wherein the sensor device is configured for operation in direct contact with a surface comprising a voltage of up to 2500 V.

9. An electrical device comprising:
the sensor device according to claim 1 ; and
an electrical consumer,
wherein the sensor device is arranged at the electrical consumer and fixed by the mechanical fastening element by a clamping force.

10. The electrical device according to claim 9 , wherein the electrical consumer is an electric motor.

11. The electrical device according to claim 9 , wherein the electrical consumer comprises a mounting element to which the sensor device is arranged and fixed.

12. The electrical device according to claim 11 , wherein the mounting element is part of a busbar of the electrical consumer.

13. The electrical device according to claim 11 , wherein the mounting element is in a form of a metal tongue onto which the sensor device is slid.

14. The electrical device according to claim 11 , wherein the mounting element comprises a detent counter element into which a detent element of the mechanical fastening element is engaged.

15. The electrical device according to claim 11 , wherein the mounting element comprises a one-sided bevel formed as a counterpart to a one-sided bevel on the housing.

16. A vehicle comprising:
the electrical device according to claim 9 .

17. The sensor device according to claim 1 , wherein the housing comprises at least one mounting guiding comprising one or more guiding grooves.

18. The sensor device according to claim 1 , wherein the housing comprises at least one mounting guiding comprising one or more bevels.

19. A sensor device comprising:
a sensor element in a housing; and
a mechanical fastening element arranged and fastened to the housing,
wherein the mechanical fastening element comprises a spring element,
wherein the housing comprises a plastic comprising a liquid crystal polymer filled with boron nitride,
wherein the housing comprises a base part and a cover part connected to each other, and a cavity in which the sensor element is arranged,
wherein the cavity comprises at least partially a potting material, and
wherein the potting material is an epoxy resin.

20. A sensor device comprising:
a sensor element in a housing; and
a mechanical fastening element arranged and fastened to the housing,
wherein the sensor element is connected via wire connections,
wherein the sensor element and the wire connections are encapsulated in an encapsulation,
wherein the mechanical fastening element comprises a spring element,
wherein the housing comprises a plastic comprising a liquid crystal polymer filled with boron nitride,
wherein the housing comprises a base part and a cover part connected to each other, and
wherein the housing forms a cavity, in which the sensor element, the wire connections and the encapsulation are arranged,
wherein the cavity comprises at least partially a potting material, and
wherein the potting material is an epoxy resin.

Assignees

• Tdk Electronics Ag

Inventors

• Foerster Philipp
• Dehoff Carsten

Classifications

• G01D11/245

  Housings for sensors · CPC title

• G01K2205/00

  Application of thermometers in motors, e.g. of a vehicle · CPC title

• G01K1/143

  for measuring surface temperatures · CPC title

• G01K1/14

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

• G01K7/22

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