The present invention refers to a device and a method for measuring isolation resistance of a battery powered systems. The device comprises: a first reference resistance (R01) connectable in series between a positive high-voltage bus (1) and a low-voltage ground connection (5), a second reference resistance (R02) connectable in series between the negative high-voltage bus (2) and the a low-voltage ground connection (5), a first measurement resistance (Rbottom) connected with the low-voltage ground connection (5), a second measurement resistance (Rtop1) connectable in series between the positive high-voltage bus (1), and the first measurement resistance (Rbottom), and a third measurement resistance (Rtop2) connectable in series between the negative high-voltage bus (2), and the first measurement resistance (Rbottom). Isolation resistances (Riso_pos, Riso_neg) are calculated based on voltage measurements at the first measurement resistance (Rbottom), and the mean value of the four high-voltage battery voltage measurements.
DEVICE AND METHOD FOR MEASURING ISOLATION RESISTANCE OF BATTERY POWERED SYSTEMS
VORRICHTUNG UND VERFAHREN ZUR MESSUNG DES ISOLATIONSWIDERSTANDS EINES BATTERIEBETRIEBENEN SYSTEMS
DISPOSITIF ET PROCÉDÉ DE MESURE DE RÉSISTANCE DE L'ISOLATION DE SYSTÈMES ALIMENTÉS PAR BATTERIE
2022-06-01
Patent
Elektronische Ressource
Englisch
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