Device and method for determination of the drive-power distribution in a hybrid driveline of a vehicle
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Accused Products
Abstract
A device and method for determination of the drive-power distribution in a hybrid driveline of a vehicle, a land or water vehicle or an aircraft. The device is characterized by a device for determining a nominal state of charge (soc_ksport) of an energy accumulator as a function of the driver'"'"'s current, dynamic or economical manner of driving and for determining the current mode of operation (operating mode) of the driveline as a function of the nominal state of charge (soc_ksport), by way of a device (23) for determining the electrically possible nominal drive-power (em_soll_p1) for one electric machine as a function of the nominal state of charge (soc_ksport) and the current mode of operation (operating mode) of the driveline, and by a device for determining the nominal drive-power (vm_soll_p, em_soll_p) for the combustion engine and the at least one electric machine as a function of the electrically possible nominal drive-power (em_soll_p1).
59 Citations
70 Claims
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1-35. -35. (canceled)
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36. A device for determination of the drive-power distribution in a hybrid driveline (1, 2) of a vehicle, for example a land or water vehicle or aircraft, with a combustion engine (VM), at least one electric drive machine (EM1, EM2) and a transmission (7), with means to detect a drive-power (fahr_soll_p) desired by a driver, means to detect operating parameters of the combustion engine and at least one electric drive machine (VM, EM1, EM2), means to detect a state of charge of an electrical energy accumulator (28) and means for dividing the drive-power (fahr_soll_p) desired by the driver into nominal power specifications for the combustion engine and at least one electric drive machine (VM, EM1, EM2), a device (22) for determining a nominal state of charge (soc_ksport) of the energy accumulator (28) as a function of the driver'"'"'s current dynamic or economical manner of driving, and
for determining a current mode of operation (operating mode) of the driveline as a function of the nominal state of charge (soc_ksport), a device (23) for determining a electrically possible nominal drive-power (em_soll_p1) for the at least one electric machine (EM1, EM2) as a function of the nominal state of charge (soc_ksport) and the current mode of operation (operating mode) of the driveline, and a device (24) for determining a nominal drive-power (vm_soll_p, em_soll_p) for the combustion engine (VM) and the at least one electric machine (EM1, EM2) as a function of the electrically possible nominal drive-power (em_soll_p1).
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59. A method for determination of a drive-power distribution in a hybrid driveline (1, 2) of a motor vehicle, with a combustion engine (VM), at least one electric drive machine (EM1, EM2) and a transmission (7), the method further comprising the steps of:
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detecting a value of the currently desired drive-power (fahr_soll_p) desired by a driver, determining a minimum and maximum power (vm_min_p, vm_max_p) of the combustion engine at a current engine speed, determining an actual state of charge (soc_ist) and minimum and maximum states of charge (SOC_MIN, SOC_MAX) of an energy accumulator (28), detecting a sportiness characteristic factor (k_sport) associated with the driver, determining a minimum and maximum charging power (charge_p, discharge_p) of the energy accumulator, and determining a the minimum and maximum drive-power (em_min_p, em_max_p) of the at least one electric drive machine, a nominal state of charge (soc_ksport) is calculated from the value of the currently desired drive-power (fahr_soll_p) and the sportiness characteristic factor (k_sport), the vehicle'"'"'s current operating situation is determined as a function of the sportiness characteristic factor (k_sport), the minimum and maximum power (vm_min_p, vm_max_p) of the combustion engine, and the actual state of charge (soc_ist) of the energy accumulator (28), with help of the values for the sportiness characteristic factor (k_sport), the current operating situation, the actual state of charge (soc_ist) and the minimum and maximum states of charge (SOC_MIN, SOC_MAX) of the energy accumulator, a charge power limitation value (charge power limit) and a discharge power limitation value (discharge power limit) and the minimum and maximum power (vm_min_p, vm_max_p) of the combustion engine at its current speed, an electrically possible nominal drive-power value (em_soll_p1) for the at least one electric machine (EM1, EM2) is determined, and with help of the electrically possible nominal drive-power value (em_soll_p1) and the minimum and maximum charge power (charge_p, discharge_p) of the energy accumulator and with the current minimum and maximum drive-power (em_min_p, em_max_p) of the at least one electric machine, nominal drive-power values (em_soll_p, vm_soll_p) are produced for the at least one electric machine (EM1, EM2) and the combustion engine (VM). - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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Specification