US 12,066,336 B2
Isolated temperature sensing for hems contacts
David Bruce Sarraf, Elizabethtown, PA (US); Marjorie Kay Myers, Mount Joy, PA (US); and Mark Wartenberg, Fremont, CA (US)
Assigned to TE Connectivity Solutions GmbH, (CH)
Filed by TE Connectivity Solutions GmbH, Schaffhausen (CH)
Filed on Feb. 13, 2023, as Appl. No. 18/168,098.
Application 18/168,098 is a division of application No. 16/295,414, filed on Mar. 7, 2019, granted, now 11,714,008.
Prior Publication US 2023/0194355 A1, Jun. 22, 2023
Int. Cl. G01K 7/02 (2021.01); B60L 53/16 (2019.01); B60L 53/302 (2019.01); G01K 5/52 (2006.01); G01K 7/16 (2006.01); G01K 7/36 (2006.01); G01K 11/12 (2021.01); B60L 53/62 (2019.01); C09D 11/50 (2014.01); G09F 3/00 (2006.01); H01R 13/66 (2006.01)
CPC G01K 7/023 (2013.01) [B60L 53/16 (2019.02); B60L 53/302 (2019.02); G01K 5/52 (2013.01); G01K 7/16 (2013.01); G01K 11/12 (2013.01); B60L 53/62 (2019.02); C09D 11/50 (2013.01); G01K 7/36 (2013.01); G09F 3/0294 (2013.01); H01R 13/6683 (2013.01); Y02T 10/70 (2013.01); Y02T 10/7072 (2013.01); Y02T 90/12 (2013.01); Y02T 90/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of detecting temperature of an electrical terminal comprising:
applying a material patch to a surface of the electrical terminal, the material patch containing a polymer matrix with a polymeric positive temperature coefficient material which contains a mixture of electrically conductive magnetic particles, whereby the material patch does not appreciably increase the electrical resistance or thermal capacitance of the electrical terminal;
exciting the electrically conductive magnetic particles with an AC magnetic field to cause eddy currents to flow within the electrically conductive magnetic particles;
remotely sensing a change in the material patch with an electrically isolated circuit which is external to the electrical terminal to determine if the electrical terminal is operating at a safe temperature to optimize current flow across the electrical terminal.