JP2007112291A - POWER OUTPUT DEVICE, VEHICLE MOUNTING THE SAME, AND METHOD FOR CONTROLLING POWER OUTPUT DEVICE - Google Patents

Abstract

An electric power input / output device for inputting / outputting power to / from an output shaft and a drive shaft of an internal combustion engine and an electric motor capable of inputting / outputting power to / from the drive shaft. In this case, a larger driving force in the reverse rotation direction is output to the drive shaft without causing complication of the apparatus.
When the required torque Tr * cannot be output due to the torque up to the rated maximum torque Tm2max of the motor MG2 when traveling in the reverse direction, the torque for motoring the engine within the range subjected to the upper limit guard process is set. The torque command Tm1 * of MG1 is set (steps S160 and S170), the rated maximum torque Tm2max of the motor MG2 is set to the torque command Tm2 * (step S180), and the motors MG1 and MG2 are driven and controlled. As a result, the vehicle can travel backward with a torque larger than the torque that can be output from the motor MG2.
[Selection] Figure 2

Description

  The present invention relates to a power output apparatus, a vehicle on which the power output apparatus is mounted, and a method for controlling the power output apparatus.

Conventionally, this type of power output device includes an engine, a planetary gear having a carrier connected to the crankshaft of the engine and a ring gear connected to a drive shaft connected to a drive wheel, and a sun gear of the planetary gear. A vehicle-mounted one that includes a motor MG1 for outputting, a motor MG2 for inputting / outputting power to / from the drive shaft, and a forward / reverse switching gear unit for switching the rotation direction of the crankshaft of the engine has been proposed (for example, Patent Document 1) reference). In a vehicle equipped with this power output device, when traveling in the reverse direction, the forward / reverse switching gear unit is switched so that the power output from the engine is output to the drive shaft as power for reverse travel.
JP 2000-358303 A

  Since the power output device described above includes a forward / reverse switching gear unit, power from the engine can be output to the drive shaft as power for reverse travel. However, installation of the forward / reverse switching gear unit requires space and the device itself is complicated. Turn into. In the configuration without the forward / reverse switching gear unit, the power from the engine acts in the forward direction during reverse travel, so the engine is usually stopped and traveled only by the driving force from the motor MG2, but the rated maximum drive of the motor MG2 It is not possible to respond to a request for output of driving force exceeding the force.

  The power output apparatus of the present invention, a vehicle equipped with the power output apparatus, and a control method for the power output apparatus are described. Electric power power that inputs / outputs power to / from an output shaft and a drive shaft of an internal combustion engine together with input / output of power and power In an apparatus including an input / output device and an electric motor capable of inputting / outputting power to / from the drive shaft, one of the objects is to output a larger driving force in the reverse rotation direction to the drive shaft without causing complication of the device. . The power output apparatus of the present invention, a vehicle equipped with the power output apparatus, and a control method for the power output apparatus input / output power to / from the output shaft and drive shaft of the internal combustion engine together with input / output of power and power. Output power to the drive shaft in the reverse rotation direction that exceeds the rated value of the motor without complicating the device, including an electric power drive input / output device and an electric motor that can input / output power to the drive shaft. Is one of the purposes.

  The power output apparatus of the present invention, a vehicle equipped with the power output apparatus, and a method of controlling the power output apparatus employ the following means in order to achieve at least a part of the above-described object.

The power output apparatus of the present invention is
A power output device that outputs power to a drive shaft,
An internal combustion engine;
Power power input / output means connected to the output shaft of the internal combustion engine and the drive shaft and capable of inputting and outputting power to the output shaft and the drive shaft with input and output of power and power;
An electric motor capable of inputting and outputting power to the drive shaft;
A power storage means capable of exchanging power with the electric power drive input / output means and the electric motor;
Rotation direction setting means for setting the rotation direction of the drive shaft;
Required driving force setting means for setting required driving force required for the drive shaft;
When the rotation direction of the power acting on the drive shaft via the power power input / output means is set to normal rotation when the internal combustion engine is operating, the rotation direction setting means reverses the normal rotation. When the rotation is set, the internal combustion engine and the electric power are driven so that a driving force based on the set required driving force is output to the drive shaft in the set rotation direction with motoring of the internal combustion engine. Reverse rotation direction drive control means for controlling the input / output means and the electric motor;
It is a summary to provide.

  In the power output apparatus of the present invention, when the rotation direction of the power acting on the drive shaft via the power power input / output means is set to the normal rotation when the internal combustion engine is operated, the reverse of the normal rotation is performed. When the rotation is set, the internal combustion engine and the power power input / output means so that the driving force based on the required driving force required for the drive shaft accompanying motoring of the internal combustion engine is output in the reverse rotation direction to the drive shaft. And the motor. When the internal combustion engine is motored, a driving force as a reaction force is output to the driving shaft via the power driving input / output means. Since this driving force acts in the direction of reverse rotation, the sum of the driving force as the reaction force and the driving force from the electric motor is output to the driving shaft. As a result, a driving force larger than the driving force in the reverse rotation direction output from the electric motor can be output to the drive shaft without providing a switching gear unit that switches between forward rotation and reverse rotation.

  In such a power output apparatus of the present invention, the reverse rotation direction drive control means does not involve motoring of the internal combustion engine when the set required drive force is less than or equal to the rated maximum drive force in the reverse rotation direction of the electric motor. Control is performed so that the set required drive force is output to the drive shaft in the set rotation direction, and the internal combustion engine is set when the set required drive force is greater than a rated maximum drive force in the reverse rotation direction of the electric motor. It may be a means for controlling so that a driving force based on the set required driving force is output to the driving shaft in the set rotational direction with engine motoring. In this way, even when the required driving force required for the drive shaft is greater than the rated maximum driving force in the reverse rotation direction of the motor, a driving force closer to the required driving force than the rated maximum driving force is output to the driving shaft. Can do.

  In the power output apparatus of the present invention, the power / power input / output means is connected to three shafts of the output shaft, the drive shaft, and the rotating shaft of the internal combustion engine, and enters any two of the three shafts. It is also possible to provide a means comprising: a three-axis power input / output means for inputting / outputting power to the remaining shaft based on the output power; and a generator capable of inputting / outputting power to / from the rotating shaft. . The power drive input / output means includes a first rotor connected to the output shaft of the internal combustion engine and a second rotor connected to the drive shaft, and the first rotor A counter-rotor motor that rotates by relative rotation with the second rotor may also be used.

  The vehicle of the present invention is a power output device of the present invention according to any one of the above-described aspects, that is, basically a power output device that outputs power to a drive shaft, and includes an internal combustion engine and an output of the internal combustion engine. Power power input / output means connected to the shaft and the drive shaft and capable of inputting / outputting power to / from the output shaft and the drive shaft with input / output of power and power, and power input / output to / from the drive shaft An electric motor, the electric power drive input / output means, an electric storage means capable of exchanging electric power with the electric motor, a rotation direction setting means for setting the rotation direction of the drive shaft, and a required driving force required for the drive shaft are set. By means of the rotation direction setting means when the rotation direction of the power acting on the drive shaft via the power power input / output means when the internal combustion engine is operated is set to a positive rotation. Reverse rotation opposite to the normal rotation When set, the internal combustion engine and the power power input / output are set such that a driving force based on the set required driving force is output to the drive shaft in the set rotational direction with motoring of the internal combustion engine. And a reverse rotation direction drive control means for controlling the motor and the electric motor. The power output device is mounted, and the axle is connected to the drive shaft.

  Since the vehicle according to the present invention is equipped with the power output device of the present invention according to any one of the above-described aspects, the vehicle has the switching gear unit that switches between forward rotation and reverse rotation, for example, the effects of the power output device of the present invention. In addition, it is possible to achieve the same effect as the effect that a driving force larger than the driving force in the reverse rotation direction output from the electric motor can be output to the drive shaft.

  Such a vehicle according to the present invention includes a traveling direction setting unit that sets a traveling direction instead of the rotational direction setting unit, and the electric power driving input / output unit is output from the internal combustion engine with input and output of electric power and power. A means for outputting at least a part of the power to the drive shaft as a driving force for moving the vehicle forward, and the reverse rotation direction drive control means is configured such that when the reverse direction is set as the travel direction by the travel direction setting means, The internal combustion engine, the power power input / output means, and the electric motor so that a driving force based on the set required driving force is output as a driving force acting in the reverse direction on the driving shaft with motoring of the internal combustion engine. It can also be a means for controlling.

The method for controlling the power output apparatus of the present invention includes:
An internal combustion engine; power power input / output means connected to an output shaft and a drive shaft of the internal combustion engine and capable of inputting / outputting power to / from the output shaft and the drive shaft with input / output of power and power; and the drive A power output device control method comprising: an electric motor capable of inputting / outputting power to a shaft; and the electric power input / output means and an electric storage means capable of exchanging electric power with the electric motor,
When the internal combustion engine is in operation, when the rotational direction of power acting on the drive shaft via the power power input / output means is set to normal rotation, the drive is performed in the reverse rotation direction opposite to the normal rotation. When a driving force is output in the reverse direction to the drive shaft in a state where the shaft is rotated, the driving force based on the required driving force required for the drive shaft accompanying motoring of the internal combustion engine is the drive shaft. The internal combustion engine, the power drive input / output means, and the electric motor are controlled so as to be output in the reverse rotation direction.

  In the control method of the power output apparatus of the present invention, when the internal combustion engine is operated, when the rotation direction of the power acting on the drive shaft via the power power input / output means is set to the normal rotation, When reverse reverse rotation is set, the internal combustion engine and electric power are driven so that the driving force based on the required driving force required for the drive shaft accompanying motoring of the internal combustion engine is output to the drive shaft in the reverse rotation direction. The input / output means and the electric motor are controlled. When the internal combustion engine is motored, a driving force as a reaction force is output to the driving shaft via the power driving input / output means. Since this driving force acts in the direction of reverse rotation, the sum of the driving force as the reaction force and the driving force from the electric motor is output to the driving shaft. As a result, a driving force larger than the driving force in the reverse rotation direction output from the electric motor can be output to the drive shaft without providing a switching gear unit that switches between forward rotation and reverse rotation.

  Next, the best mode for carrying out the present invention will be described using examples.

  FIG. 1 is a configuration diagram showing an outline of a configuration of a hybrid vehicle 20 equipped with a power output apparatus according to an embodiment of the present invention. As shown in the figure, the hybrid vehicle 20 of the embodiment includes an engine 22, a three-shaft power distribution / integration mechanism 30 connected to a crankshaft 26 as an output shaft of the engine 22 via a damper 28, and power distribution / integration. A motor MG1 capable of generating electricity connected to the mechanism 30, a reduction gear 35 attached to a ring gear shaft 32a as a drive shaft connected to the power distribution and integration mechanism 30, a motor MG2 connected to the reduction gear 35, And a hybrid electronic control unit 70 for controlling the entire power output apparatus.

  The engine 22 is an internal combustion engine that outputs power using a hydrocarbon-based fuel such as gasoline or light oil, and an engine electronic control unit (hereinafter referred to as an engine ECU) that receives signals from various sensors that detect the operating state of the engine 22. ) 24 is subjected to operation control such as fuel injection control, ignition control, intake air amount adjustment control and the like. The engine ECU 24 is in communication with the hybrid electronic control unit 70, controls the operation of the engine 22 by a control signal from the hybrid electronic control unit 70, and, if necessary, transmits data related to the operating state of the engine 22 to the hybrid electronic control. Output to unit 70.

  The power distribution and integration mechanism 30 includes an external gear sun gear 31, an internal gear ring gear 32 arranged concentrically with the sun gear 31, a plurality of pinion gears 33 that mesh with the sun gear 31 and mesh with the ring gear 32, A planetary gear mechanism is provided that includes a carrier 34 that holds a plurality of pinion gears 33 so as to rotate and revolve, and that performs differential action using the sun gear 31, the ring gear 32, and the carrier 34 as rotational elements. In the power distribution and integration mechanism 30, the crankshaft 26 of the engine 22 is connected to the carrier 34, the motor MG1 is connected to the sun gear 31, and the reduction gear 35 is connected to the ring gear 32 via the ring gear shaft 32a. When functioning as a generator, power from the engine 22 input from the carrier 34 is distributed according to the gear ratio between the sun gear 31 side and the ring gear 32 side, and when the motor MG1 functions as an electric motor, the engine input from the carrier 34 The power from 22 and the power from the motor MG1 input from the sun gear 31 are integrated and output to the ring gear 32 side. The power output to the ring gear 32 is finally output from the ring gear shaft 32a to the drive wheels 63a and 63b of the vehicle via the gear mechanism 60 and the differential gear 62.

  The motor MG1 and the motor MG2 are both configured as well-known synchronous generator motors that can be driven as generators and can be driven as motors, and exchange power with the battery 50 via inverters 41 and 42. The power line 54 connecting the inverters 41 and 42 and the battery 50 is configured as a positive electrode bus and a negative electrode bus shared by the inverters 41 and 42, and the electric power generated by one of the motors MG1 and MG2 It can be consumed by a motor. Therefore, battery 50 is charged / discharged by electric power generated from one of motors MG1 and MG2 or insufficient electric power. If the balance of electric power is balanced by the motors MG1 and MG2, the battery 50 is not charged / discharged. The motors MG1 and MG2 are both driven and controlled by a motor electronic control unit (hereinafter referred to as a motor ECU) 40. The motor ECU 40 detects signals necessary for driving and controlling the motors MG1 and MG2, such as signals from rotational position detection sensors 43 and 44 that detect the rotational positions of the rotors of the motors MG1 and MG2, and current sensors (not shown). The phase current applied to the motors MG1 and MG2 to be applied is input, and a switching control signal to the inverters 41 and 42 is output from the motor ECU 40. The motor ECU 40 is in communication with the hybrid electronic control unit 70, controls the driving of the motors MG1 and MG2 by a control signal from the hybrid electronic control unit 70, and, if necessary, data on the operating state of the motors MG1 and MG2. Output to the hybrid electronic control unit 70.

  The battery 50 is managed by a battery electronic control unit (hereinafter referred to as a battery ECU) 52. The battery ECU 52 receives signals necessary for managing the battery 50, for example, a voltage between terminals from a voltage sensor (not shown) installed between terminals of the battery 50, and a power line 54 connected to the output terminal of the battery 50. The charging / discharging current from the attached current sensor (not shown), the battery temperature Tb from the temperature sensor 51 attached to the battery 50, and the like are input. Output to the control unit 70. The battery ECU 52 also calculates the remaining capacity (SOC) based on the integrated value of the charge / discharge current detected by the current sensor in order to manage the battery 50.

  The hybrid electronic control unit 70 is configured as a microprocessor centered on the CPU 72, and in addition to the CPU 72, a ROM 74 for storing processing programs, a RAM 76 for temporarily storing data, an input / output port and communication not shown. And a port. The hybrid electronic control unit 70 includes an ignition signal from an ignition switch 80, a shift position SP from a shift position sensor 82 that detects the operation position of the shift lever 81, and an accelerator pedal position sensor 84 that detects the amount of depression of the accelerator pedal 83. The accelerator pedal opening Acc from the vehicle, the brake pedal position BP from the brake pedal position sensor 86 for detecting the depression amount of the brake pedal 85, the vehicle speed V from the vehicle speed sensor 88, and the like are input via the input port. As described above, the hybrid electronic control unit 70 is connected to the engine ECU 24, the motor ECU 40, and the battery ECU 52 via the communication port, and exchanges various control signals and data with the engine ECU 24, the motor ECU 40, and the battery ECU 52. ing. In the embodiment, the shift position SP includes a parking position (P position), a traveling position (D position) as a normal position for traveling in the forward direction, and traveling in the forward direction with a large braking force when the accelerator is off. Brake position (B position), neutral position (N position) in which traveling is not performed, and reverse position (R position) in which the vehicle travels in the reverse direction is prepared.

  The hybrid vehicle 20 of the embodiment thus configured calculates the required torque to be output to the ring gear shaft 32a as the drive shaft based on the accelerator opening Acc and the vehicle speed V corresponding to the depression amount of the accelerator pedal 83 by the driver. Then, the operation of the engine 22, the motor MG1, and the motor MG2 is controlled so that the required power corresponding to the required torque is output to the ring gear shaft 32a. As operation control of the engine 22, the motor MG1, and the motor MG2, the operation of the engine 22 is controlled so that power corresponding to the required power is output from the engine 22, and all of the power output from the engine 22 is the power distribution and integration mechanism 30. Torque conversion operation mode for driving and controlling the motor MG1 and the motor MG2 so that the torque is converted by the motor MG1 and the motor MG2 and output to the ring gear shaft 32a, and the required power and the power required for charging and discharging the battery 50. The engine 22 is operated and controlled so that suitable power is output from the engine 22, and all or part of the power output from the engine 22 with charging / discharging of the battery 50 is the power distribution and integration mechanism 30, the motor MG1, and the motor. The required power is converted to the ring gear shaft 32 with torque conversion by MG2. Charge / discharge operation mode in which the motor MG1 and the motor MG2 are driven and controlled to be output to each other, and a motor operation mode in which the operation of the engine 22 is stopped and the power corresponding to the required power from the motor MG2 is output to the ring gear shaft 32a. and so on.

  Next, the operation of the hybrid vehicle 20 of the embodiment configured as described above, particularly the operation when the shift lever 81 is operated to the reverse position (R position) and travels backward will be described. FIG. 2 is a flowchart showing an example of a reverse drive control routine executed by the hybrid electronic control unit 70. This routine is repeatedly executed every predetermined time (for example, every several msec). In the hybrid vehicle 20 of the embodiment, when the vehicle is traveling backward, the operation of the engine 22 is stopped when the remaining capacity (SOC) of the battery 50 is not extremely small. Therefore, the reverse drive control routine is executed with the operation stop of the engine 22.

  When the reverse drive control routine is executed, first, the CPU 72 of the hybrid electronic control unit 70 first determines the accelerator opening Acc from the accelerator pedal position sensor 84, the vehicle speed V from the vehicle speed sensor 88, the rotational speed Nm2 of the motor MG2, and the like. Processing for inputting data necessary for control during reverse travel is executed (step S100). Here, the rotation speed Nm2 of the motor MG12 is calculated based on the rotation position of the rotor of the motor MG2 detected by the rotation position detection sensor 44, and is input from the motor ECU 40 by communication.

  When the data is thus input, the required torque Tr * to be output to the ring gear shaft 32a as the drive shaft connected to the drive wheels 63a and 63b as the torque required for the vehicle based on the input accelerator opening Acc and the vehicle speed V. (Step S110), the rated maximum torque Tm2max that can be output in the reverse direction from the motor MG2 is input based on the input rotational speed Nm2 of the motor MG2 (step S120), and the set required torque Tr * is input. A value obtained by multiplying the rated maximum torque Tm2max by the gear ratio Gr of the reduction gear 35 is compared (step S130). Here, in the embodiment, the required torque Tr * is stored in the ROM 74 as a required torque setting map by predetermining the relationship among the accelerator opening Acc, the vehicle speed V, and the required torque Tr *. When the vehicle speed V is given, the corresponding required torque Tr * is derived and set from the stored map. FIG. 3 shows an example of the required torque setting map. For the rated maximum torque Tm2max of the motor MG2, the relationship between the rotational speed Nm2 of the motor MG2 and the rated maximum torque Tm2max is stored in advance in the ROM 74 as a map, and when the rotational speed Nm2 of the motor MG2 is given, The torque Tm2max is input by deriving. FIG. 4 shows an example of the rated maximum torque of the motor MG2. Note that the magnitude comparison in step S130 is an absolute value comparison in the embodiment.

  When it is determined that the required torque Tr * is equal to or less than the value obtained by multiplying the rated maximum torque Tm2max by the gear ratio Gr of the reduction gear 35, the value 0 is set to the torque command Tm1 * of the motor MG1 (step S140), and the required torque Tr A value obtained by dividing * by the gear ratio Gr is set in the torque command Tm2 * of the motor MG2 (step S150), and the set torque commands Tm1 * and Tm2 * are transmitted to the motor ECU 40 (step S190), and the reverse drive control is performed. End the routine. Receiving the torque commands Tm1 * and Tm2 *, the motor ECU 40 controls the switching elements of the inverters 41 and 42 so that the motor MG1 is driven by the torque command Tm1 * and the motor MG2 is driven by the torque command Tm2 *. . Note that, since the value 0 is set in the torque command Tm1 *, the switching of the switching element of the inverter 41 is controlled so that no torque is output from the motor MG1. FIG. 5 is a collinear diagram showing the dynamic relationship between the rotational speed and torque in the rotating elements of the power distribution and integration mechanism 30 in this state. In the figure, the left S-axis indicates the rotation speed of the sun gear 31 that is the rotation speed Nm1 of the motor MG1, the C-axis indicates the rotation speed of the carrier 34 that is the rotation speed Ne of the engine 22, and the R-axis indicates the rotation speed of the motor MG2. The rotational speed Nr of the ring gear 32 obtained by dividing the number Nm2 by the gear ratio Gr of the reduction gear 35 is shown. A thick arrow on the R axis indicates torque Tm2 * output from the motor MG2 to the ring gear 32 via the reduction gear 35.

  When it is determined in step S130 that the required torque Tr * is greater than the value obtained by multiplying the rated maximum torque Tm2max by the gear ratio Gr of the reduction gear 35, the gear ratio Gr of the reduction gear 35 is set from the required torque Tr * to the rated maximum torque Tm2max. A ring gear is obtained by motoring the engine 22 with a smaller one of the value obtained by subtracting the multiplied value and the maximum torque Temax converted to the ring gear shaft 32a that may be output to the engine 22 when the engine 22 is motored. The motor ring output torque Tg to be output to the shaft 32a is set (step S160), and the torque command Tm1 * of the motor MG1 is set by the following equation (1) so that the motor ring output torque Tg is output to the ring gear shaft 32a. (Step S170), rated maximum torque Tm2ma Was set to the torque command Tm2 * of the motor MG2 (step S180), the torque command Tm1 * set, by sending Tm2 * to the motor ECU 40 (step S190), and ends the reverse drive control routine. The process of step S160 is a guard process that prevents the engine 22 from rotating too much. As described above, when the torque command Tm1 * of the motor MG1 is set and the motor MG1 is driven and controlled, the engine 22 is motored by the motor MG1, and by motoring the engine 22, the ring gear shaft 32a is moved in the reverse direction. Torque is output. FIG. 6 is a collinear diagram showing the dynamic relationship between the rotational speed and torque in the rotating elements of the power distribution and integration mechanism 30 in this state. As shown in the figure, by driving and controlling the motor MG1, a torque corresponding to the gear ratio ρ of the power distribution and integration mechanism 30 is added to the torque output from the motor MG2 and output. Equation (1) can be easily derived from the alignment chart of FIG.

  Tm1 * = ρ ・ Tg (1)

  According to the hybrid vehicle 20 of the embodiment described above, when traveling in the reverse direction, motoring of the engine 22 by the motor MG1 is accompanied by motoring of the engine 22 in addition to the torque output from the motor MG2. In addition, the vehicle can travel backward using the torque output to the ring gear shaft 32a. As a result, the vehicle can travel backward with a larger torque and a torque larger than the rated maximum torque Tm2max of the motor MG2. In addition, since the motor 22 is motored by the motor MG1 only when the required torque Tr * cannot be output by the torque up to the rated maximum torque Tm2max of the motor MG2, it is possible to suppress wasteful consumption of the power of the battery 50. can do. Further, since the torque command Tm1 * of the motor MG1 is set by the guard process when the engine 22 is motored, damage due to the excessive increase in the rotational speed of the engine 22 can be suppressed. Of course, since the forward / reverse switching gear unit is not provided, the apparatus can be reduced in size and the complexity of the apparatus can be suppressed.

  In the hybrid vehicle 20 of the embodiment, the motor 22 is motored by the motor MG1 only when the required torque Tr * cannot be output by the torque up to the rated maximum torque Tm2max of the motor MG2. Sometimes, the motor 22 is always motored by the motor MG1.

  In the hybrid vehicle 20 of the embodiment, when the engine 22 is motored, the torque command Tm1 * of the motor MG1 is set by guard processing. However, variable guard processing is performed depending on the rotation speed of the engine 22 and the rotation speed of the motor MG1. The torque command Tm1 * of the motor MG1 may be set.

  In the hybrid vehicle 20 of the embodiment, the power of the motor MG2 is shifted by the reduction gear 35 and output to the ring gear shaft 32a. However, as illustrated in the hybrid vehicle 120 of the modified example of FIG. May be connected to an axle (an axle connected to the wheels 64a and 64b in FIG. 7) different from an axle to which the ring gear shaft 32a is connected (an axle to which the drive wheels 63a and 63b are connected).

  In the hybrid vehicle 20 of the embodiment, the power of the engine 22 is output to the ring gear shaft 32a as the drive shaft connected to the drive wheels 63a and 63b via the power distribution and integration mechanism 30, but the modified example of FIG. The hybrid vehicle 220 includes an inner rotor 232 connected to the crankshaft 26 of the engine 22 and an outer rotor 234 connected to a drive shaft that outputs power to the drive wheels 63a and 63b. A counter-rotor motor 230 that transmits a part of the power to the drive shaft and converts the remaining power into electric power may be provided.

  Although the hybrid vehicle 20 of the embodiment has been described as the hybrid vehicle 20 equipped with the power output device, it may be in the form of a power output device including the engine 22, the power distribution and integration mechanism 30, and the motors MG1 and MG2, or such power output. It does not matter as a form of the control method of the apparatus. In the form of a power output device, a device that sets the switching of the rotation direction of the drive shaft may be provided instead of the shift lever 81. In the case of a power output device, the power output device may be mounted on a moving body such as a vehicle other than an automobile, a ship, or an aircraft, or may be incorporated in equipment other than a moving body such as construction equipment. Good.

  The embodiments of the present invention have been described using the embodiments. However, the present invention is not limited to these embodiments, and can be implemented in various forms without departing from the gist of the present invention. Of course you get.

  The present invention can be used in the power output apparatus and the vehicle manufacturing industry.

1 is a configuration diagram showing an outline of a configuration of a hybrid vehicle 20 according to an embodiment of the present invention. It is a flowchart which shows an example of the reverse drive control routine performed by the hybrid electronic control unit of the embodiment. It is explanatory drawing which shows an example of the map for request | requirement torque setting. It is explanatory drawing which shows an example of rated maximum torque Tm2max of motor MG2. It is explanatory drawing which shows an example of the alignment chart for demonstrating dynamically the rotational element of the power distribution integrated mechanism 30 at the time of reverse drive only by the torque from motor MG2. It is explanatory drawing which shows an example of the collinear diagram for demonstrating dynamically the rotational element of the power distribution integrated mechanism 30 at the time of reverse drive with the motoring of the engine 22 by the motor MG1. FIG. 11 is a configuration diagram showing an outline of a configuration of a hybrid vehicle 120 according to a modification. FIG. 11 is a configuration diagram showing an outline of a configuration of a hybrid vehicle 220 of a modified example.

Explanation of symbols

20, 120, 220 Hybrid vehicle, 22 engine, 24 engine electronic control unit (engine ECU), 26 crankshaft, 28 damper, 30 power distribution integration mechanism, 31 sun gear, 32 ring gear, 32a ring gear shaft, 33 pinion gear, 34 carrier , 35, reduction gear, 40 motor electronic control unit (motor ECU), 41, 42 inverter, 43, 44 rotational position detection sensor, 50 battery, 51 temperature sensor, 52 battery electronic control unit (battery ECU), 54 electric power Line, 60 gear mechanism, 62 differential gear, 63a, 63b drive wheel, 64a, 64b wheel, 70 electronic control unit for hybrid, 72 CPU, 74 ROM, 76 RAM, 80 ignition switch, 81 shift lever -, 82 Shift position sensor, 83 accelerator pedal, 84 accelerator pedal position sensor, 85 brake pedal, 86 brake pedal position sensor, 88 vehicle speed sensor, 230 rotor motor, 232 inner rotor 234 outer rotor, MG1, MG2 motor.

Claims (7)

A power output device that outputs power to a drive shaft,
An internal combustion engine;
Power power input / output means connected to the output shaft of the internal combustion engine and the drive shaft and capable of inputting and outputting power to the output shaft and the drive shaft with input and output of power and power;
An electric motor capable of inputting and outputting power to the drive shaft;
A power storage means capable of exchanging power with the electric power drive input / output means and the electric motor;
Rotation direction setting means for setting the rotation direction of the drive shaft;
Required driving force setting means for setting required driving force required for the drive shaft;
When the rotation direction of the power acting on the drive shaft via the power power input / output means is set to normal rotation when the internal combustion engine is operating, the rotation direction setting means reverses the normal rotation. When the rotation is set, the internal combustion engine and the electric power are driven so that a driving force based on the set required driving force is output to the drive shaft in the set rotation direction with motoring of the internal combustion engine. Reverse rotation direction drive control means for controlling the input / output means and the electric motor;
A power output device comprising:   The reverse rotation direction drive control means is configured so that the set required drive force is not accompanied by motoring of the internal combustion engine when the set required drive force is equal to or less than a rated maximum drive force in the reverse rotation direction of the electric motor. The driving shaft is controlled to output in the set rotational direction, and when the set required driving force is larger than the rated maximum driving force in the reverse rotation direction of the electric motor, the setting is performed with motoring of the internal combustion engine. The power output apparatus according to claim 1, wherein the power output device is a means for controlling the driving force based on the requested driving force to be output to the driving shaft in the set rotation direction.   The power power input / output means is connected to three shafts of the output shaft of the internal combustion engine, the drive shaft, and the rotating shaft, and the remaining shaft based on the power input / output to / from any two of the three shafts The power output apparatus according to claim 1 or 2, comprising: a three-axis power input / output means for inputting / outputting power to / from the power generator; and a generator capable of inputting / outputting power to / from the rotating shaft.   The power drive input / output means has a first rotor connected to the output shaft of the internal combustion engine and a second rotor connected to the drive shaft, and the first rotor and the first rotor 3. The power output apparatus according to claim 1, wherein the power output apparatus is a counter-rotor electric motor that rotates by relative rotation with the two rotors.   A vehicle comprising the power output device according to any one of claims 1 to 4 and an axle connected to the drive shaft. The vehicle according to claim 5,
Instead of the rotation direction setting means, comprising a travel direction setting means for setting the travel direction,
The electric power drive input / output means is a means for outputting to the drive shaft at least part of the power output from the internal combustion engine accompanied by input / output of electric power and power as a drive force for moving the vehicle forward,
When the reverse direction is set as the travel direction by the travel direction setting means, the reverse rotation direction drive control means is configured such that the drive force based on the set required drive force accompanying motoring of the internal combustion engine is the drive shaft. A vehicle for controlling the internal combustion engine, the power power input / output unit, and the electric motor so as to be output as a driving force acting in the reverse direction. An internal combustion engine; power power input / output means connected to an output shaft and a drive shaft of the internal combustion engine and capable of inputting / outputting power to / from the output shaft and the drive shaft with input / output of power and power; and the drive A power output device control method comprising: an electric motor capable of inputting / outputting power to a shaft; and the electric power input / output means and an electric storage means capable of exchanging electric power with the electric motor,
When the internal combustion engine is in operation, when the rotational direction of power acting on the drive shaft via the power power input / output means is set to normal rotation, the drive is performed in the reverse rotation direction opposite to the normal rotation. When a driving force is output in the reverse direction to the drive shaft in a state where the shaft is rotated, the driving force based on the required driving force required for the drive shaft accompanying motoring of the internal combustion engine is the drive shaft. The internal combustion engine, the power power input / output means, and the electric motor are controlled so as to be output in the reverse rotation direction.
Control method of power output device.

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