Volkswagen Ag

Varta Automotive Systems Gmbh

Matthias Ullrich

Andreas Deyda

Rainer Kröger

Claus Schmitz

Hans-Walter Folge

A device, vehicle, method and computer program for deactivating high-voltage components of a vehicle. The device for deactivating high-voltage components of a vehicle carries out an error analysis of the high-voltage components after detecting a vibration and deactivates the high-voltage components if an error in the high-voltage components results in the error analysis.

Device, vehicle, method and computer program for deactivating high-voltage components of a vehicle

In a method for determining the state of charge of rechargeable batteries by integration of the amounts of current flowing during charging and discharging, a first state of charge value LZ is determined by continuous integration of the rechargeable battery current. A second state of charge value LZ is determined by measurement of the no-load voltage U after receiving or supplying a defined amount of charge Q which is sufficient in order to leave the region of the mixed potential of the electrodes and to reach a no-load voltage of the rechargeable battery, and by comparison of this measured no-load voltage U with empirically determined no-load voltage characteristics for the rechargeable battery. From the state of charge values obtained in this way, that state of charge value is chosen which is more reliable in the preceding operating conditions, with the assessment of LZ taking into account in particular the charge throughput in the assessment of LZ , in particular the amount of charge Q which has flowed. The amount of charge Q should be at least 1 to 40%, preferably 5 to 50%, of the rated capacity of the rechargeable battery.

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Gifhorn, Germany

Matthias Ullrich