METHOD FOR REGULATING THE CHARGING STATE OF AN ENERGY ACCUMULATOR FOR A VEHICLE COMPRISING A HYBRID DRIVE
First Claim
1. A method for regulating a charging state of an energy accumulator for a vehicle with a hybrid drive comprising:
- detecting a driving speed variable value of the vehicle by driving speed detection device and determining a nominal charging state of the energy accumulator as a function of the driving speed variable value by a control unit;
detecting an actual charging state of the energy accumulator by a charging state detection device;
comparing the actual charging state with the nominal charging state by said control unit;
switching on an energy consumer by a charging state regulator, for at least partially discharging the energy accumulator when the actual charging state exceeds the nominal charging state;
tabulating a first nominal charging state value as a function of the driving speed variable value by a characteristic curve, in order to determine the nominal charging state of the energy accumulator; and
adapting the characteristic curve by said control unit when the vehicle is braked, whereby a correction value determined by said control unit is added to the first nominal charging state value of the characteristic curve, said correction value being associated with a real-time driving speed variable value during braking, and the first nominal charging state value which is increased or decreased by adding the correction value is stored as a new nominal charging state value of the characteristic curve for the real-time driving speed variable value.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for regulating a charging state of an energy accumulator for a vehicle with a hybrid drive includes detecting a driving speed variable value of the vehicle and determining a nominal charging state of the energy accumulator as a function of the driving speed variable value by a control unit, detecting an actual charging state of the energy accumulator, comparing the actual charging state with the nominal charging state by the control unit, switching on an energy consumer by a charging state regulator, for at least partially discharging the energy accumulator when the actual charging state exceeds the nominal charging state, tabulating a first nominal charging state value as a function of the driving speed variable value by a characteristic curve, in order to determine the nominal charging state of the energy accumulator, and adapting the characteristic curve by the control unit when the vehicle is braked.
31 Citations
13 Claims
-
1. A method for regulating a charging state of an energy accumulator for a vehicle with a hybrid drive comprising:
-
detecting a driving speed variable value of the vehicle by driving speed detection device and determining a nominal charging state of the energy accumulator as a function of the driving speed variable value by a control unit; detecting an actual charging state of the energy accumulator by a charging state detection device; comparing the actual charging state with the nominal charging state by said control unit; switching on an energy consumer by a charging state regulator, for at least partially discharging the energy accumulator when the actual charging state exceeds the nominal charging state; tabulating a first nominal charging state value as a function of the driving speed variable value by a characteristic curve, in order to determine the nominal charging state of the energy accumulator; and adapting the characteristic curve by said control unit when the vehicle is braked, whereby a correction value determined by said control unit is added to the first nominal charging state value of the characteristic curve, said correction value being associated with a real-time driving speed variable value during braking, and the first nominal charging state value which is increased or decreased by adding the correction value is stored as a new nominal charging state value of the characteristic curve for the real-time driving speed variable value. - View Dependent Claims (2, 3, 4, 5, 6, 12)
-
-
7. A control unit for regulating a charging state of an energy accumulator for a vehicle with a hybrid drive, comprising:
-
the control unit determining a nominal charging state of the energy accumulator as a function of a driving speed variable value of the vehicle that can be detected by a driving speed detection;
device and comparing an actual charging state of the energy accumulator that can be detected by a charging state detection device with the nominal charging state,the control unit having a charging state regulator, the charging state regulator switching on an energy consumer for at least partially discharging the energy accumulator when the actual charging state exceeds the nominal charging state, the control unit comprising an information memory, whereby a characteristic curve is filed in the information memory, which curve tabulates nominal charging state values as a function of driving speed variable values, the control unit determining the nominal charging state of the energy accumulator by determining a first nominal charging state value of the characteristic curve, the control unit adapting the characteristic curve when the vehicle is braked by determining a correction value that is added to the first nominal charging state value of the characteristic curve, said correction value being associated with a real-time driving speed variable value during braking, and the first nominal charging state value that is increased or decreased by adding the correction value is stored as a new nominal charging state value of the characteristic curve for the real-time driving speed variable value. - View Dependent Claims (8)
-
-
9. A vehicle comprising:
-
a hybrid drive; an energy accumulator; a driving speed detection device for detecting a driving speed variable value of the vehicle; a charging state detection device for detecting an actual charging state of energy accumulator; and a control unit determining a nominal charging state of the energy accumulator as a function of the driving speed variable value of the vehicle detected by the driving speed detection device and comparing the actual charging state of the energy accumulator detected by the charging state detection device with the nominal charging state, the control unit having a charging state regulator, the charging state regulator switching on an energy consumer for at least partially discharging the energy accumulator when the actual charging state exceeds the nominal charging state, the control unit comprising an information memory, whereby a characteristic curve is filed in the information memory, which curve tabulates nominal charging state values as a function of driving speed variable values, the control unit determining the nominal charging state of the energy accumulator by determining a first nominal charging state value of the characteristic curve, the control unit adapting the characteristic curve when the vehicle is braked by determining a correction value that is added to the first nominal charging state value of the characteristic curve, said correction value being associated with a real-time driving speed variable value during braking, and the first nominal charging state value which is increased or decreased by adding the correction value is stored as a new nominal charging state value of the characteristic curve for the real-time driving speed variable value. - View Dependent Claims (10, 11, 13)
-
Specification