Energy storage method for hybrid motor vehicle lowering voltage level of the energy storage if allowable temperature to be expected with voltage level is exceeded

摘要

The method involves determining, With the motor vehicle being turned off, the voltage of the capacitor (4) and temperature level of the capacitor . From the temperature level a temperature gradient of the capacitor is measured. The voltage level of the energy storage is lowered, if the allowable temperature to be expected with the given voltage level is exceeded and/or a maximum permissible temperature is reached and/or a temperature delta is exceeded.