METHOD, CONTROLLER AND SYSTEM FOR HANDLING ISOLATION FAULTS IN BATTERY OPERATED SYSTEM

METHOD, CONTROLLER AND SYSTEM FOR HANDLING ISOLATION FAULTS IN BATTERY OPERATED SYSTEM

The present application relates to a method of handling isolation faults in a battery operated high voltage electric system for propelling a vehicle, the system comprising a plurality of propulsion battery packs (12) and at least one electric machine (16) connected to said plurality of propulsion ba...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BJÖRKMAN, Mathias, KANAYATHIL RAJU, Sanju, BÖKELUND, Björn, PETTERSSON, Niklas
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES
ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL
MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PERFORMING OPERATIONS
PHYSICS
TESTING
TRANSPORTING
VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:The present application relates to a method of handling isolation faults in a battery operated high voltage electric system for propelling a vehicle, the system comprising a plurality of propulsion battery packs (12) and at least one electric machine (16) connected to said plurality of propulsion battery packs, the method comprising the steps of performing isolation measurement of the system when in operation, if an isolation fault is detected in the system, then disconnecting all propulsion battery packs; measuring isolation resistance between a plus side of each battery pack and ground and measuring isolation resistance between a minus side of each battery pack and ground; if the measured resistance in a battery pack is above a predetermined value, re-connecting that battery pack, and if the measured resistance is below a pre-determ ined value in a battery pack, maintaining that battery pack disconnected. The application also relates to a controller and a high voltage electric system for a vehicle.