US 11,747,217 B2
Electrical or electronic control device
Justus Speichermann, Stuttgart (DE)
Assigned to Dr. Ing. h.c. F. Porsche Aktiengesellschaft
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Oct. 4, 2021, as Appl. No. 17/492,770.
Claims priority of application No. 10 2020 125 942.5 (DE), filed on Oct. 5, 2020.
Prior Publication US 2022/0107226 A1, Apr. 7, 2022
Int. Cl. G01K 7/34 (2006.01); B60R 16/023 (2006.01); H02H 1/00 (2006.01); H02H 9/00 (2006.01)
CPC G01K 7/34 (2013.01) [B60R 16/023 (2013.01); H02H 1/0007 (2013.01); H02H 9/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electrical or electronic control device for a vehicle, said electrical or electronic control device comprising:
an electrical or electronic assembly, which comprises a printed circuit board composed of an electrically insulating carrier material, electrically conductive conductor tracks formed on the printed circuit board and electrical or electronic modules connected to the printed circuit board via the conductor tracks;
a coating applied to a side of the printed circuit board and at least in sections to the electrical or electronic assembly, wherein the coating comprises at least the following layers: a first electrical conductor layer, a second electrical conductor layer, a dielectric layer arranged between the first conductor layer and the second conductor layer, and an insulator layer applied to the second conductor layer in such a way that the second conductor layer is arranged between the dielectric layer and the insulator layer; and
an evaluation unit connected to the first and second electrical conductor layers and that is configured to detect a change in capacitance of the coating caused by a change in temperature of the electrical or electronic assembly based on measurement variables measured at the conductor layers of the coating.