Abstract:
PROBLEM TO BE SOLVED: To appropriately protect each of a plurality of power storage devices connected in parallel so as not to damage operability of an electric vehicle.SOLUTION: An electric vehicle 100 includes: power storage devices B1 and B2 connected in parallel; and a motor MG for the vehicle drive composed to input and output power between the power storage devices B1, B2. A control device 30 sets output permission power of each power storage device at least based on each remaining capacity of the power storage devices B1 and B2. When the limitation of the output permission power is strengthened in either one of the power storage devices B1 and B2, the control device 30 switches the power output from the entire power storage device from the value that totals the output permission power of each power storage device to the value obtained by doubling the minimum value of a plurality of pieces of output permission power set corresponding to the power storage devices B1 and B2 respectively.
Abstract:
PROBLEM TO BE SOLVED: To provide a vehicle configured so that "an electrical driving range displayed when starting operation immediately after completion of external charging" does not largely decrease when an energy storage device is normal.SOLUTION: In a hybrid vehicle 10 capable of performing electric traveling using only output of a second motor generator MG2, a display control part calculates an electrical driving range for display that increases proportional to "an electrical driving range determined on the basis of an electrically travelable remaining capacity and an electric cost corresponding value" and decreases with the increase of "a capacity when fully charged" on the basis of a battery remaining capacity suppliable from an energy storage device to the second motor generator MG2 for electric traveling, the electric cost corresponding value that is a value corresponding to a driving range of the vehicle per unit amount of the battery remaining capacity, and the capacity of the battery when fully charged. The display control part displays the electrical driving range for display on a driving range display.
Abstract:
PROBLEM TO BE SOLVED: To satisfy both of power performance and energy-saving, in an engine start during travel of HEV.SOLUTION: A hybrid vehicle can travel by either of electric travel using only output of a second power generating electric motor MG2 and hybrid travel using output of the second power generating electric motor MG2 and an internal combustion engine 20. After a battery 64 is externally charged by use of a charger 102, the vehicle performs electric travel in an EV mode. At that time, if vehicle required power becomes an engine start power threshold or more and if vehicle speed becomes an engine start vehicle speed threshold or more, the vehicle is shifted to a hybrid travel state. If the battery 64 is externally charged and thereafter the electric travel in the EV mode continues, the engine start vehicle speed threshold is set to a high side threshold. After the internal combustion engine 20 is started at least once during electric travel in the EV mode after external charging, the engine start vehicle speed threshold is set to a low side threshold lower than a high side threshold.
Abstract:
PROBLEM TO BE SOLVED: To provide a residual power display device of a power storage device, while preventing a user from feeling discomfort when the mode changed from EV mode to HV mode.SOLUTION: In a hybrid vehicle 10 having EV mode and HV mode that uses both an electric motor and an internal combustion engine for traveling, residual power of a power storage device for supplying electric power to the electric motor is estimated as control residual power. When the control residual power decreases to a mode switching threshold valve, the mode is changed from the EV mode to the HV mode. A display device acquires display residual power by filtering the control residual power and removing a high frequency component. The display device controls a display screen 73 on the basis of the display residual power when the control residual power is sufficiently large. On the other hand, when the control residual power decreases close to the mode switching threshold value, the display screen is controlled on the basis of display control residual power which comes close to the control residual power, as the control residual power comes close to "a display correction completion threshold value larger than the mode switching threshold value".
Abstract:
PROBLEM TO BE SOLVED: To maintain an SOC of an electric storage means at a time of manually switching a traveling mode of a hybrid vehicle from an EV mode to an HV mode, in traveling in the HV mode thereafter.SOLUTION: An SOC control center value in an HV mode traveling after manually switching a traveling mode from an EV mode to the HV mode is set to a value larger than an SOC of an electric storage means in the traveling in the EV mode immediately before switching the traveling mode from the EV mode to the HV mode.
Abstract:
PROBLEM TO BE SOLVED: To provide a vehicle display device capable of showing to a driver whether or not a control mode can be switched.SOLUTION: A switch operated by the driver is arranged on a vehicle in order to switch a CS mode (HV mode) for driving both of an engine and a motor generator, and a CD mode (EV mode) for limiting an opportunity for an operation of the engine in comparison with the CS mode (HV mode). When the CS mode (HV mode) is selected and switching from the CS mode (HV mode) to the CD mode (EV mode) is impossible, remaining capacity of a battery is displayed on a monitor. When the CS mode (HV mode) is selected and switching from the CS mode (HV mode) to the CD mode (EV mode) is possible, a travelable distance by driving the motor generator while the engine is stopped is displayed on the monitor, in addition to the remaining capacity of the battery.
Abstract:
PROBLEM TO BE SOLVED: To stably recover regenerative energy while suppressing giving a sense of incompatibility to a driver.SOLUTION: A gradient θof a road surface on which the vehicle is currently running and a predicted gradient θprd of a road suface scheduled to be run by the vehicle are acquired (S300), a threshold S1 is set based on an average gradient θave of the acquired gradient θ and a threshold S2 is set based on the acquired predicted gradient θprd (S310 to S330), and a smaller one between the thresholds S1, S2 is set as the cooperation-stop threshold Sref (S340). Until a state of charge (SOC) of a battery reaches the cooperation-stop threshold Sref, a motor and a brake system are so controlled that a braking force corresponding to a brake pedal force is output through cooperation between the motor and the brake system, and after the SOC reaches the cooperation-stop threshold Sref, the brake system is so controlled that a braking force corresponding to a brake pedal force is output from the brake system.
Abstract:
PROBLEM TO BE SOLVED: To provide a control device of a vehicle that can quickly warm-up the catalyst and quickly complete warming-up the catalyst, while outputting desired driving force from the engine.SOLUTION: There is provided the drive device of the vehicle. The drive device controls the engine to execute the catalyst warming-up operation when the driving force demanded by a user is equal to or less than the total of a driving force of the engine under the catalyst warming-up operation and the maximum permissible output of the capacitor, interrupts the operation for catalyst warming-up and switches to operation for traveling, when the driving force demanded by a user is larger than the total of a driving force of the engine under the catalyst warming-up operation and the maximum permissible output of the capacitor, and raises the instructed driving force of the engine at a prescribed rate, when the user demanded driving force is satisfied by the total of the engine output under traveling operation and the maximum allowance output of the capacitor, and operation emphasized on power performance by user under the traveling operation of the engine.
Abstract:
PROBLEM TO BE SOLVED: To ensure a power performance by taking full advantage of the capability of a plurality of power storage devices and adequately protect each component from overcurrent in a load driving device containing the plurality of power storage devices connected in parallel.SOLUTION: A Wout calculation part 104 adds limit values Wout1 and Wout2 of each power storage device and calculates an output power limit value Wout of a power storage part. An excess current FB control part 108 executes excess current FB control when at least one of current IB1,IB2, and IBT exceeds a predetermined threshold value. A Woutf correction processing part 112 corrects the output power limit value Woutf given to a motor power calculation part 110 to a motor power command value Pm at the timing when at least one of the current IB1,IB2, and IBT reaches the threshold value.
Abstract:
PROBLEM TO BE SOLVED: To provide an in-vehicle internal combustion engine control device which is able to alleviate driver's uncomfortable feeling caused by an engine start while the vehicle is driven.SOLUTION: A vehicle 1 includes an internal combustion engine 3 and a second motor generator MG2 as power sources for rotating drive wheels 7. When the engine is to be started while the vehicle is driven, if a required vehicle driving force TRQ is smaller than or equal to a predetermined value TRQth, an electronic control unit 20 estimates that the degree of deformation of a mount 11 is smaller than or equal to a predetermined degree and sets a second-cycle fuel injection amount Q2 to be larger than a first-cycle fuel injection, amount Ql at the time of the engine start (Q2>Q1). On the other hand, if the required vehicle driving force TRQ is larger than the predetermined value TRQth, the electronic control unit 20 estimates that the degree of deformation of the mount 11 is larger than the predetermined degree and sets the first-cycle fuel injection amount Ql to be larger than the second-cycle fuel injection amount Q2 at the time of the engine start.