	US 12,332,317 B2
	Sensor for a vehicle electrical system
Jan Marien, Herborn (DE); Benjamin Seel, Dillenburg-Eibach (DE); Andreas Lepper, Hohenahr (DE); Felix Lebeau, Herborn (DE); Alexander Wassmann, Siegen (DE); Mario Lehr, Gruenberg (DE); Daniel Woelfel, Lahnau (DE); Eckhard Broeckmann, Giessen (DE); Carsten Weiss, Giessen (DE); and Matthias Gruen, Laubach (DE)
Assigned to Isabellenhuette Heusler GMBH & Co. KG, Dillenburg (DE); and Bender GMBH & Co. KG, Gruenberg (DE)
Appl. No. 18/019,044
Filed by Isabellenhuette Heusler GMBH & Co. KG, Dillenburg (DE); and Bender GmbH & Co. KG, Gruenberg (DE)
PCT Filed Jun. 30, 2021, PCT No. PCT/EP2021/067959 § 371(c)(1), (2) Date Jan. 31, 2023, PCT Pub. No. WO2022/028779, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 102020120433.7 (DE), filed on Aug. 3, 2020.
Prior Publication US 2023/0288485 A1, Sep. 14, 2023
Int. Cl. G01R 31/3842 (2019.01); G01R 31/28 (2006.01)

CPC G01R 31/3842 (2019.01) [G01R 31/2841 (2013.01)]

19 Claims

1. A sensor for an electrical network, comprising:

a) a measuring device for at least one of current measurement and voltage measurement in the electrical network, and

b) an integrated insulation monitoring device for monitoring electrical insulation of at least one of a high-side and a low-side of the electrical network,

c) wherein the integrated insulation monitoring device operates actively and impresses measurement pulses into the electrical network for insulation monitoring,

the high-side is connectable to a positive terminal of a battery,

the low-side is connectable to a negative pole of the battery,

a chassis ground is provided,

the integrated insulation monitoring device determines a leakage capacitance between at least one of the low-side and the high-side of the electrical network on the one band and the chassis ground of the electrical network on the other hand, and

the integrated insulation monitoring device adapts the frequency of the measurement pulses as a function of the leakage capacitance determined.