Control apparatus of hybrid vehicle
First Claim
1. A control apparatus of a hybrid vehicle, comprising:
- a first drive unit that includes a first electric motor and a power distribution device that outputs driving force to a driving wheel via a differential device using an engine and the first electric motor and without using a stepped transmission;
a second drive unit that includes a second electric motor and a stepped transmission disposed between the second electric motor and the driving wheel;
a battery capable of both supplying electric power to the first electric motor and the second electric motor and storing electric power regenerated by the first electric motor and the second electric motor;
shift determination means for determining whether there is a need for shifting carried out by the stepped transmission;
battery state detection means for detecting a state of the battery;
shifting-time drive control means for controlling driving force output from the second drive unit so that driving force output from the first drive unit and the second drive unit to the driving wheel substantially reaches a driver request torque; and
battery balance control means for calculating an amount of increase/decrease in a charge amount of the battery in accordance with the state of the battery detected by the battery state detection means and changing an operation point of the engine based on the amount of increase/decrease in the charge amount, prior to the shifting of the stepped transmission, if the shift determination means determines that there is a need for the shifting of the stepped transmission, wherein;
the battery balance control means calculates an electric power consumption that is needed for controlling the driving force from the second drive unit during the shifting at a time of determining that there is the need for the shifting, calculates the amount of increase/decrease in the charge amount of the battery in accordance with the state of the battery and the calculated electric power consumption of the second drive unit, and changes the operation point of the engine based on the amount of increase/decrease in the charge amount prior to the shifting if it is determined that it is impossible to output the amount of electric power from the battery.
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Accused Products
Abstract
A control apparatus of a hybrid vehicle having a first drive unit, a second drive unit, a HV battery, a shift control element, a battery state detection element, and a shifting-time drive control element. Furthermore, in the control apparatus, a battery balance control element is formed by an engine control element, a first motor control element, a second motor control element and the shifting-time drive control element. If the shift control element determines there is a need for shifting carried out by a stepped transmission, the battery balance control element calculates the amount of increase/decrease in the amount of charge of the HV battery in accordance with the state of the HV battery, and changes the engine operation point on the basis of the calculated amount of increase/decrease in the battery charge, prior to the shifting.
77 Citations
27 Claims
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1. A control apparatus of a hybrid vehicle, comprising:
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a first drive unit that includes a first electric motor and a power distribution device that outputs driving force to a driving wheel via a differential device using an engine and the first electric motor and without using a stepped transmission; a second drive unit that includes a second electric motor and a stepped transmission disposed between the second electric motor and the driving wheel; a battery capable of both supplying electric power to the first electric motor and the second electric motor and storing electric power regenerated by the first electric motor and the second electric motor; shift determination means for determining whether there is a need for shifting carried out by the stepped transmission; battery state detection means for detecting a state of the battery; shifting-time drive control means for controlling driving force output from the second drive unit so that driving force output from the first drive unit and the second drive unit to the driving wheel substantially reaches a driver request torque; and battery balance control means for calculating an amount of increase/decrease in a charge amount of the battery in accordance with the state of the battery detected by the battery state detection means and changing an operation point of the engine based on the amount of increase/decrease in the charge amount, prior to the shifting of the stepped transmission, if the shift determination means determines that there is a need for the shifting of the stepped transmission, wherein; the battery balance control means calculates an electric power consumption that is needed for controlling the driving force from the second drive unit during the shifting at a time of determining that there is the need for the shifting, calculates the amount of increase/decrease in the charge amount of the battery in accordance with the state of the battery and the calculated electric power consumption of the second drive unit, and changes the operation point of the engine based on the amount of increase/decrease in the charge amount prior to the shifting if it is determined that it is impossible to output the amount of electric power from the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A control method for a hybrid vehicle, having a first drive unit that includes a first electric motor and a power distribution device that outputs driving force to a driving wheel via a differential device using an engine and the first electric motor and without using a stepped transmission;
- a second drive unit that includes a second electric motor and a stepped transmission disposed between the second electric motor and the driving wheel;
a battery capable of both supplying electric power to the first electric motor and the second electric motor and storing electric power regenerated by the first electric motor and the second electric motor; and
a controller, the method comprising;determining a driver request torque; determining whether there is a need for shifting to be carried out by the stepped transmission; detecting a state of the battery; controlling driving force output from the second drive unit so that driving force output from the first drive unit and the second drive unit to the driving wheel substantially reaches the driver request torque; calculating an amount of increase/decrease in a charge amount of the battery in accordance with the state of the battery detected by the battery state detection means; changing an operation point of the engine based on the amount of increase/decrease in the charge amount, prior to the shifting of the stepped transmission, if the shift determination means determines that there is a need for the shifting of the stepped transmission; calculating an electric power consumption that is needed for controlling the driving force from the second drive unit during the shifting at a time of determining that there is the need for the shifting; calculating the amount of increase/decrease in the charge amount of the battery in accordance with the state of the battery and the calculated electric power consumption of the second drive unit; and changing the operation point of the engine based on the amount of increase/decrease in the charge amount prior to the shifting if it is determined that it is impossible to output the amount of electric power from the battery. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
- a second drive unit that includes a second electric motor and a stepped transmission disposed between the second electric motor and the driving wheel;
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25. A control apparatus of a hybrid vehicle, comprising:
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a first drive unit that includes a first electric motor and a power distribution device that outputs driving force to a driving wheel via a differential device using an engine and the first electric motor and without using a stepped transmission; a second drive unit that includes a second electric motor and a stepped transmission disposed between the second electric motor and the driving wheel; a battery capable of both supplying electric power to the first electric motor and the second electric motor and storing electric power regenerated by the first electric motor and the second electric motor; a shift determination element that determines whether there is a need for shifting carried out by the stepped transmission; a battery state detection element that detects a state of the battery; a shifting-time drive control element that controls driving force output from the second drive unit so that driving force output from the first drive unit and the second drive unit to the driving wheel substantially reaches a driver request torque; and a battery balance control element that calculates an amount of increase/decrease in a charge amount of the battery in accordance with the state of the battery detected by the battery state detection element and changes an operation point of the engine based on the amount of increase/decrease in the charge amount, prior to the shifting of the stepped transmission, if the shift determination element determines that there is a need for the shifting of the stepped transmission, wherein; the battery balance control element calculates an electric power consumption that is needed for controlling the driving force from the second drive unit during the shifting at a time of determining that there is the need for the shifting, calculates the amount of increase/decrease in the charge amount of the battery in accordance with the state of the batten and the calculated electric power consumption of the second drive unit, and changes the operation point of the engine based on the amount of increase/decrease in the charge amount prior to the shifting if it is determined that it is impossible to output the amount of electric power from the battery. - View Dependent Claims (26, 27)
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Specification