Temperature Sensor System and Method for Producing a Temperature Sensor System

Patent metadata

Field	Value
Publication number	US-2016290872-A1
Application number	US-201314442357-A
Country	US
Kind code	A1
Filing date	Sep 27, 2013
Priority date	Nov 12, 2012
Publication date	Oct 6, 2016
Grant date	—

Abstract

The invention relates to a temperature sensor system comprising a first ceramic housing part comprising a sleeve-shaped lower part with a first lower end having a first opening, and a second upper end having a second opening, and an upper part connected to the second upper end. The temperature sensor system further comprises a temperature probe element which is at least partially arranged in the lower part and which has a ceramic sensor element housing, a sensor element arranged in the sensor element housing, and electrical supply lines. The sensor element housing is at least partially arranged in the first opening. The ceramic sensor element housing has a higher thermal conductivity than the first ceramic housing part. Also disclosed is a method for producing a temperature sensor system.

First claim

1 - 15 . (canceled)

16 . A temperature sensor system, comprising:
a first ceramic housing part comprising a sleeve-shaped lower part with a first lower end having a first opening and a second upper end having a second opening, and an upper part connected to the second upper end; and a temperature probe element arranged at least in part in the lower part and comprising a ceramic sensor element housing, a sensor element arranged in the sensor element housing, and electrical feed lines; wherein the sensor element housing is arranged at least in part in the first opening, and wherein the ceramic sensor element housing has a higher thermal conductivity than the first ceramic housing part.

17 . The temperature sensor system according to claim 16 , wherein the upper part comprises recesses in which the electrical feed lines of the temperature probe element are arranged and guided at least in part, and wherein the lower part and the upper part are formed in one piece.

18 . The temperature sensor system according to claim 16 , wherein the first ceramic housing part is an injection-molded part.

19 . The temperature sensor system according to claim 16 , wherein the first ceramic housing part comprises mullite, steatite or zirconium oxide.

20 . The temperature sensor system according to claim 16 , wherein the ceramic sensor element housing comprises aluminum oxide, aluminum nitride or silicon carbide.

21 . The temperature sensor system according to claim 16 , wherein the ceramic sensor element housing comprises a peripheral protrusion, and wherein the protrusion is connected to the second opening in a form-fitting manner by means of an adhesive bond.

22 . The temperature sensor system according to claim 16 , comprising a second ceramic housing part which is connected to the upper part of the first ceramic housing part, wherein the upper part comprises an extension with recesses in which the electrical feed lines are arranged and guided at least in part.

23 . The temperature sensor system according to claim 16 , wherein the temperature probe element is fixed in the first ceramic housing part by means of a potting material.

24 . The temperature sensor system according to claim 16 , wherein the sensor element is an NTC sensor element.

25 . The temperature sensor system according to claim 16 , wherein the sensor element has one of the following structures: a perovskite structure comprising elements Y, Ca, Cr, Al, and O, or a spinel structure comprising elements Ni, Co, Mn, and O.

26 . The temperature sensor system according to claim 25 , wherein the sensor element has a perovskite structure with a formula (Y 1-x Ca x )(Cr 1-y Al y )O 3 , where x=0.03 to 0.05 and y=0.85.

27 . The temperature sensor system according to claim 25 , wherein the sensor element has a spinel structure with a formula Co 3-(x+y) Ni x Mn y O 4 , with x=1.32 and y=1.32.

28 . A method for producing a temperature sensor system, comprising:
providing and a first ceramic housing part, wherein the first ceramic housing part comprises a sleeve-shaped lower part with a first lower end having a first opening and a second upper end having a second opening, and an upper part comprising recesses connected to the second upper end; providing a temperature probe element comprising a ceramic sensor housing, a sensor element arranged in the sensor element housing, and electrical feed lines; arranging the temperature probe element at least in part in a sleeve-shaped lower part of the first ceramic housing part in such a manner that the sensor element housing is arranged at least in part in the first opening; introducing potting material into the first ceramic housing part in such a manner that the temperature probe element is encased at least in part in the potting material; arranging part of the electrical feed lines within the recesses of the upper part of the first ceramic housing part; and connecting the upper part of the first ceramic housing part to a second ceramic housing part using a connecting substance.

29 . The method according to claim 28 , wherein the potting material and the connecting substance comprise the same material.

30 . The method according to claim 28 , wherein the electrical feed lines are connected using hard soldering, crimping or welding to connection lines, wherein the connection lines are arranged partly in the recesses of the upper part prior to the connection of the upper part to the second ceramic housing part, and wherein the connection lines are sealed by a polymer or glass in an exit region from the first ceramic housing part, the second ceramic housing part, or both.

31 . A method for producing a temperature sensor system, comprising:
providing a first ceramic housing part comprising a sleeve-shaped lower part with a first lower end having a first opening and a second upper end having a second opening, and an upper part connected to the second upper end; and providing a temperature probe element arranged at least in part in the lower part and comprising a ceramic sensor element housing, a sensor element arranged in the ceramic sensor element housing, and electrical feed lines; wherein the ceramic sensor element housing is arranged at least in part in the first opening, and wherein the ceramic sensor element housing has a higher thermal conductivity than the first ceramic housing part.

32 . The method according to claim 31 , wherein the lower part and the upper part are formed in one piece.

33 . The method according to claim 32 , wherein the upper part comprises recesses in which the electrical feed lines of the temperature probe element are arranged.

34 . The method according to claim 33 , wherein the sensor element is an NTC sensor element.

Assignees

• Epcos Ag

Inventors

• Ihle Jan
• Bard Oliver
• Kloiber Gerald

Classifications

• G01K7/22

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

• G01K1/08 Primary

  Protective devices, e.g. casings · CPC title