EP 4038398 A1 20220810 - METHOD FOR ESTIMATING THE INSULATION RESISTANCE OF A HIGH-VOLTAGE CIRCUIT IN AN ELECTRIC OR HYBRID MOTOR VEHICLE
Title (en)
METHOD FOR ESTIMATING THE INSULATION RESISTANCE OF A HIGH-VOLTAGE CIRCUIT IN AN ELECTRIC OR HYBRID MOTOR VEHICLE
Title (de)
VERFAHREN ZUR SCHÄTZUNG DES ISOLATIONSWIDERSTANDES EINER HOCHSPANNUNGSSCHALTUNG IN EINEM ELEKTRISCHEN ODER HYBRIDEN KRAFTFAHRZEUG
Title (fr)
PROCÉDÉ D'ESTIMATION DE LA RÉSISTANCE D'ISOLEMENT D'UN CIRCUIT HAUTE TENSION D'UN VÉHICULE AUTOMOBILE ÉLECTRIQUE OU HYBRIDE
Publication
Application
Priority
- FR 1910786 A 20190930
- EP 2020076319 W 20200921
Abstract (en)
[origin: WO2021063725A1] Method for determining an insulation resistance of the high-voltage network in an electric or hybrid vehicle, wherein a controllable continuous voltage source connected to the body and to a single first terminal of a high-voltage battery of the vehicle is provided, a first resistor being connected in series to the source between the single first terminal and the body and a second resistor being connected in series between the first resistor and the source, consecutive voltage setpoint values are applied between the body and the single first terminal, a measurement signal of the voltage at the terminals of the second resistor is acquired for each setpoint value, adaptive filtering of said signal is carried out and an estimate made, in a recursive manner, of a vector of the filter transfer function coefficients, providing an update of the filtering coefficients, the insulation resistance being determined on the basis of the estimate.
IPC 8 full level
G01R 27/02 (2006.01); B60L 3/00 (2019.01); G01R 27/18 (2006.01); G01R 31/52 (2020.01)
CPC (source: CN EP KR US)
B60L 3/0069 (2013.01 - CN EP KR US); G01R 27/025 (2013.01 - CN KR); G01R 27/08 (2013.01 - US); G01R 27/18 (2013.01 - CN EP KR US); G01R 31/52 (2020.01 - CN EP KR US); B60Y 2200/91 (2013.01 - KR); B60Y 2200/92 (2013.01 - KR); G01R 27/025 (2013.01 - EP); Y02T 10/70 (2013.01 - KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3101425 A1 20210402; FR 3101425 B1 20211015; CN 114521238 A 20220520; EP 4038398 A1 20220810; JP 2022549136 A 20221124; KR 20220066978 A 20220524; US 11959951 B2 20240416; US 2022349928 A1 20221103; WO 2021063725 A1 20210408
DOCDB simple family (application)
FR 1910786 A 20190930; CN 202080066858 A 20200921; EP 2020076319 W 20200921; EP 20772311 A 20200921; JP 2022517327 A 20200921; KR 20227014724 A 20200921; US 202017764397 A 20200921