US 11,788,903 B2
Optical temperature sensor head, temperature sensor device and electric machine having a temperature sensor head
Helmut Steinberg, Stornstein (DE); and Dietmar Volkl, Plossberg (DE)
Assigned to NEXANS, Courbevoie (FR)
Filed by NEXANS, Courbevoie (FR)
Filed on May 7, 2021, as Appl. No. 17/314,945.
Claims priority of application No. 20305481 (EP), filed on May 12, 2020.
Prior Publication US 2021/0364369 A1, Nov. 25, 2021
Int. Cl. G01K 11/12 (2021.01); G01K 1/16 (2006.01); G01K 11/32 (2021.01); G01K 13/00 (2021.01); G01K 11/3213 (2021.01); G01J 5/0806 (2022.01); G01J 5/0821 (2022.01)
CPC G01K 11/12 (2013.01) [G01J 5/0806 (2013.01); G01J 5/0821 (2013.01); G01K 1/16 (2013.01); G01K 11/32 (2013.01); G01K 11/3213 (2013.01); G01K 13/00 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An electric machine having a rotor and a stator, wherein the stator has a winding made from a winding wire, which is insulated with a lacquer layer, wherein the winding wire is in thermal contact with a temperature sensor head comprising an optical fibre and a sensor material, which is optically connected to a free end of the optical fibre, wherein the free end of the optical fibre has an overmould made of a plastics material, which engages over a free end of the optical fibre, wherein the overmould encloses the contact location or the contact locations between the winding wire and the temperature sensor head and forms a protective body, wherein the protective body is moulded around the winding wire.