JP4687476B2 - Power output device, automobile equipped with the same, hybrid vehicle, and control method for power output device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power output apparatus with which the protection of batteries can be further exhibited, while protecting the batteries. <P>SOLUTION: When an accelerator degree of opening Acc that is at a threshold Aref or higher (S320, S330) and a predetermined time T1 has elapsed after previous overoutput processing, or when a predetermined time T2 is elapsed after previous overoutput processing (S320, S340) during an engine start, an overoutput processing is performed to set a value of a predetermined overoutput Wset plus a rated output of battery at an output limit Wout of battery (S410). Thereby, the performance of battery can be delivered more significantly. Moreover, the battery can be protected more properly, by performing an overoutput processing at intervals, according to the factors of the requirement of the overoutput processing. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to a power output device, a vehicle equipped with the power output device, a hybrid vehicle, and a method for controlling the power output device.

Conventionally, this type of power output apparatus includes an engine and a motor that can output power to the drive shaft, and is based on the engine operation point and motor output set for the required output required for the drive shaft. A battery output request is calculated, and when the calculated output request is larger than the rated output of the battery, an output that exceeds the rated output within a predetermined time range has been proposed (for example, see Patent Document 1). In this device, the performance of the battery can be exhibited by permitting an output exceeding the rated output of the battery for a short time.
JP 2002-58113 A

  As described above, in the power output apparatus, it is considered that one of the important issues is to sufficiently exhibit the performance of the battery while protecting the battery. In particular, in an automobile equipped with such a power output device, the size of the battery can be reduced and the capacity of the motor for traveling can be increased, so that such a problem becomes more important. By the way, in such a power output device, when a relatively large driving force is required for the drive shaft while the engine is stopped and only the power from the motor is output to the drive shaft, the engine is quickly started. It is desirable to respond quickly to driver demands.

  The power output device of the present invention, the automobile on which the power output device is mounted, the hybrid vehicle, and the control method for the power output device are one of the purposes for protecting the power storage device and further exerting the performance of the power storage device. In addition, the power output device of the present invention, a vehicle equipped with the power output device, and a hybrid vehicle have a relatively large driving force on the drive shaft while the power source is stopped and only the power from the motor is output to the drive shaft. When requested, one of the purposes is to quickly cope with the driver's request by quickly starting the power source.

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

The power output apparatus of the present invention is
A power output device that outputs power to a drive shaft,
A plurality of devices required directly or indirectly for the output of power to the drive shaft;
Power storage means capable of supplying power to the plurality of devices;
Normally, power supply to the plurality of devices is permitted within the range of the rated output of the power storage means, and when an excess output request exceeding the rated output of the power storage means is made, an excess permission condition based on the factor of the excess output request Output permission means for permitting the output from the power storage means up to a predetermined excess output exceeding the rated output using
Control means for controlling the plurality of devices within the scope of permission by the output permission means;
It is a summary to provide.

  In the power output device of the present invention, the excess output exceeding the rated output of the power storage means is permitted by allowing the power supply to the previous number of devices within the range of the rated output of the power storage means capable of supplying power to a plurality of devices in normal times. When a request is made, an output from the power storage means up to a predetermined excess output exceeding the rated output is permitted using an excess permission condition based on the factor of the excess output request, and a plurality of devices are controlled within the permitted range. Therefore, when an excess output request is made, the output from the power storage means exceeds the rated output in accordance with the excess permission condition based on the factor of the request, so that the performance of the power storage means can be further exhibited. In addition, since the output from the power storage means is set to a predetermined excess output, damage to the power storage means can be prevented.

  In such a power output apparatus of the present invention, the excess permission condition may be a condition in which a factor time as a time based on a factor of the excess output request has elapsed since the end of the previous excess output permission. By so doing, it is possible to allow the excess output after the factor time has elapsed since the end of the previous allowance for excess output. As a result, it is possible to further prevent the storage means from being damaged as compared with the case where excessive output is continuously permitted. In this case, the factor time may be set so as to increase as the degree of the previous excess output increases. In this way, it is possible to set a factor time according to the previous excess output level.

  The power output apparatus of the present invention further includes state detection means for detecting the state of the power storage means, and the predetermined excess output is an output set based on the detected state of the power storage means. You can also. In this way, the predetermined excess output can be set more appropriately according to the state of the power storage means. In this case, the state detection means is means for detecting the amount of stored electricity that can be discharged from the electricity storage means, and the predetermined excess output is an output that tends to increase as the detected amount of electricity stored increases. It can also be assumed.

  Furthermore, in the power output apparatus of the present invention, the predetermined excess output may be an output set based on a factor of the excess output request. In this way, the predetermined excess output can be set more appropriately according to the cause of the excess output request.

  Alternatively, in the power output apparatus of the present invention, a power source capable of outputting power to the drive shaft is provided, and the plurality of devices are input and output of power to and from the start device used for starting the power source and the drive shaft. The excess output request factor includes a start excess output request for starting the power source and a drive excess output request for increasing the output of the motor, The excess permission condition may be a condition in which the start excess output request has priority over the drive excess output request. If it carries out like this, a power source can be started quickly and a driver | operator's request | requirement can be dealt with rapidly. In this aspect of the power output apparatus of the present invention, the power source is an internal combustion engine, and the starting device is connected to the output shaft and the drive shaft of the internal combustion engine, and includes input and output of electric power and power. Thus, it can be an electric power input / output device capable of inputting / outputting power to / from the output shaft or the drive shaft. In this case, the power drive input / output device is connected to three shafts of the output shaft of the internal combustion engine, the drive shaft, and the rotation shaft, and is based on power input / output to any two of the three shafts. The output shaft of the internal combustion engine may be a device including a three-shaft power input / output device that inputs and outputs power to the remaining shaft and a generator that inputs and outputs power to the rotating shaft. A first rotor connected to the second rotor and a second rotor connected to the drive shaft, the pair of rotors rotating by relative rotation between the first rotor and the second rotor It can also be a child electric motor.

  The automobile of the present invention is a power output device of the present invention according to any one of the above-described aspects, that is, a power output device that basically outputs power to the drive shaft, and outputs power to the drive shaft. A plurality of devices that are directly or indirectly required, a power storage means that can supply power to the plurality of devices, and a power supply to the plurality of devices within the rated output range of the power storage means at normal times When an excess output request exceeding the rated output of the power storage means is made, an output permitting output from the power storage means up to a predetermined excess output exceeding the rated output using an excess permission condition based on a factor of the excess output request The gist of the invention is that a power fishing device including a permission means and a control means for controlling the plurality of devices within a range of permission by the output permission means is mounted, and an axle is connected to the drive shaft.

  In the automobile according to the present invention, since the power output device of the present invention according to any one of the above-described aspects is mounted, the effect exhibited by the power output device according to the present invention, for example, the effect that the performance of the power storage means can be exhibited more, It is possible to achieve the same effect as the effect of preventing the storage means from being damaged.

The hybrid vehicle of the present invention
A power source capable of outputting driving power;
A starting device capable of starting the power source;
An electric motor capable of outputting driving power;
Power storage means capable of supplying power to the starting device and the electric motor;
Normally, power supply to a plurality of devices including the starting device and the electric motor is permitted within the range of the rated output of the power storage means, and the excess output request exceeding the rated output of the power storage means is made. Output permission means for permitting output from the power storage means to a predetermined excess output exceeding the rated output using an excess permission condition based on an output request factor;
Control means for controlling the plurality of devices within the scope of permission by the output permission means;
It is a summary to provide.

  In the hybrid vehicle of the present invention, the starting device and the electric motor are within the rated output range of the storage means capable of supplying power to the starting device that can start the power source and the electric motor that can output the driving power in the normal state. When an excess output request exceeding the rated output of the power storage means is made, up to a specified excess output exceeding the rated output using the excess permission condition based on the cause of the excess output request The output from the power storage means is permitted, and a plurality of devices are controlled within the permitted range. Therefore, when an excess output request is made, the output from the power storage means exceeds the rated output in accordance with the excess permission condition based on the factor of the request, so that the performance of the power storage means can be further exhibited. In addition, since the output from the power storage means is set to a predetermined excess output, damage to the power storage means can be prevented.

  In such a hybrid vehicle of the present invention, the power source is connected to a first axle so that power can be output, and the electric motor is connected to a second axle different from the first axle so that power can be output. It can also be.

The method for controlling the power output apparatus of the present invention includes:
A control method for a power output device comprising: a plurality of devices that are directly or indirectly required for output of power to a drive shaft; and a power storage means that can supply power to the plurality of devices,
Normally, power supply to the plurality of devices is permitted within the range of the rated output of the power storage means, and when an excess output request exceeding the rated output of the power storage means is made, an excess permission condition based on the factor of the excess output request Permitting the output from the power storage means up to a predetermined excess output exceeding the rated output using
The gist is to control the plurality of devices within the scope of the permission.

  According to the method for controlling a power output apparatus of the present invention, the power supply to the previous number of devices is permitted within the range of the rated output of the power storage means capable of supplying power to a plurality of devices during normal operation, When an excess output request exceeding the output is made, the output from the power storage means up to a predetermined excess output exceeding the rated output is permitted using an excess permission condition based on the cause of the excess output request, and a plurality of outputs within the permitted range are permitted. Control the equipment. Therefore, when an excess output request is made, the output from the power storage means exceeds the rated output in accordance with the excess permission condition based on the factor of the request, so that the performance of the power storage means can be further exhibited. In addition, since the output from the power storage means is set to a predetermined excess output, damage to the power storage means can be prevented.

  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, an inter-terminal voltage Vb from the voltage sensor 51 a installed between the terminals of the battery 50, and a power line 54 connected to the output terminal of the battery 50. The charging / discharging current Ib from the attached current sensor 51b, the battery temperature Tb from the temperature sensor 51c 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.

  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 at the time of drive control based on the output management of the battery 50 will be described. FIG. 2 is a flowchart showing an example of a drive control routine executed by the hybrid electronic control unit 70, and FIG. 3 is executed by the battery ECU 52 in order to manage the output limit Wout of the battery 50 used for such drive control. It is a flowchart which shows an example of an output management routine. Both routines are repeatedly executed every predetermined time (for example, every several milliseconds). Hereinafter, drive control will be described first, and then management of the output limit Wout of the battery 50 used in drive control will be described.

  When the 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 Nm1, of the motors MG1, MG2. A process of inputting data necessary for control, such as Nm2, the output limit Wout of the battery 50, is executed (step S100). Here, the rotational speeds Nm1 and Nm2 of the motors MG1 and MG2 are input from the motor ECU 40 by communication from those calculated based on the rotational positions of the rotors of the motors MG1 and MG2 detected by the rotational position detection sensors 43 and 44. To do. Further, as the input / output limit Wout of the battery 50, the output limit Wout set by the output management routine illustrated in FIG. 3 is input from the battery ECU 52 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. And the required power Pe * required for the engine 22 is set (step S110). In the embodiment, the required torque Tr * is determined in advance by storing the relationship between the accelerator opening Acc, the vehicle speed V, and the required torque Tr * in the ROM 74 as a required torque setting map, and the accelerator opening Acc, the vehicle speed V, , The corresponding required torque Tr * is derived and set from the stored map. FIG. 4 shows an example of the required torque setting map. The required power Pe * can be calculated as the sum of the set required torque Tr * multiplied by the rotational speed Nr of the ring gear shaft 32a and the charge / discharge required power Pb * required by the battery 50 and the loss Loss. The rotation speed Nr of the ring gear shaft 32a can be obtained by multiplying the vehicle speed V by the conversion factor k, or can be obtained by dividing the rotation speed Nm2 of the motor MG2 by the gear ratio Gr of the reduction gear 35. The charge / discharge required power Pb * can be set by the remaining capacity (SOC) of the battery 50, the accelerator opening degree Acc, and the like.

  When the required torque Tr * and the required power Pe * are set, the set required power Pe * is compared with a threshold value Pref (step S120). Here, the threshold value Pref sets the range of the motor operation mode in which the operation of the engine 22 is stopped and the vehicle travels only with the power output from the motor MG2, and is set according to the performance of the motor MG2 and the capacity of the battery 50. can do.

  When the required power Pe * is larger than the threshold value Pref, it is determined whether or not the engine 22 is being operated (step S130). When the engine 22 is in operation, it is determined whether or not the accelerator opening Acc is larger than the threshold value Aref (step S140). When it is determined that the accelerator opening Acc is larger than the threshold value Aref, the rated output from the battery 50 is determined. Is set to an excess output request flag Fout1 (step S150). Here, the threshold value Aref is set to determine whether or not to request an output exceeding the rated output from the battery 50, and is set to 70% or 80%, for example. The output limit Wout of the battery 50 when the value 1 is set in the excess output request flag Fout1 will be described later using the output management routine of FIG. When the accelerator opening Acc is equal to or smaller than the threshold value Aref, it is not necessary to request an output exceeding the rated output from the battery 50. Therefore, the process proceeds to the next process without setting the value 1 to the excess output request flag Fout1.

  Next, a target rotational speed Ne * and a target torque Te * of the engine 22 are set based on the required power Pe * (step S160). In this setting, the target rotational speed Ne * and the target torque Te * are set based on the operation line for efficiently operating the engine 22 and the required power Pe *. FIG. 5 shows an example of the operation line of the engine 22 and how the target rotational speed Ne * and the target torque Te * are set. As shown in the figure, the target rotational speed Ne * and the target torque Te * can be obtained from the intersection of the operation line and a curve with a constant required power Pe * (Ne * × Te *).

  Subsequently, using the set target rotational speed Ne *, the rotational speed Nr (Nm2 / Gr) of the ring gear shaft 32a, and the gear ratio ρ of the power distribution and integration mechanism 30, the target rotational speed Nm1 of the motor MG1 is given by the following equation (1). * Is calculated and a torque command Tm1 * of the motor MG1 is calculated by equation (2) based on the calculated target rotational speed Nm1 * and the current rotational speed Nm1 (step S170). Here, Expression (1) is a dynamic relational expression for the rotating element of the power distribution and integration mechanism 30. 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. As shown in FIG. 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. Expression (1) can be easily derived by using this alignment chart. The two thick arrows on the R axis indicate that torque Te * output from the engine 22 when the engine 22 is normally operated at the operation point of the target rotational speed Ne * and the target torque Te * is transmitted to the ring gear shaft 32a. Torque (hereinafter referred to as direct torque) and torque that torque Tm2 * output from the motor MG2 acts on the ring gear shaft 32a via the reduction gear 35. Expression (2) is a relational expression in feedback control for rotating the motor MG1 at the target rotational speed Nm1 *. In Expression (2), “k1” in the second term on the right side is a gain of a proportional term. “K2” in the third term on the right side is the gain of the integral term.

Nm1 * = Ne * ・ (1 + ρ) / ρ-Nm2 / (Gr ・ ρ) (1)
Tm1 * = previous Tm1 * + k1 (Nm1 * -Nm1) + k2∫ (Nm1 * -Nm1) dt (2)

  When the target rotational speed Nm1 * and the torque command Tm1 * of the motor MG1 are thus calculated, a motor obtained by multiplying the output limit Wout of the battery 50 and the calculated torque command Tm1 * of the motor MG1 by the current rotational speed Nm1 of the motor MG1. A torque limit Tmax as an upper limit of the torque that may be output from the motor MG2 by dividing the deviation from the power consumption (generated power) of MG1 by the rotation speed Nm2 of the motor MG2 is calculated by the following equation (3) (step) S180), using the required torque Tr *, the torque command Tm1 *, and the gear ratio ρ of the power distribution and integration mechanism 30, a temporary motor torque Tm2tmp as a torque to be output from the motor MG2 is calculated by the equation (4) (step S190). As a value obtained by limiting the temporary motor torque Tm2tmp with the calculated torque limit Tmax, To set the torque command Tm2 * of the motor MG2 (step S200). By setting the torque command Tm2 * of the motor MG2 in this way, the required torque Tr * output to the ring gear shaft 32a as the drive shaft is set as a torque limited within the range of the input / output limits Win and Wout of the battery 50. can do. Equation (4) can be easily derived from the collinear diagram of FIG. 6 described above.

Tmax = (Wout-Tm1 * ・ Nm1) / Nm2 (3)
Tm2tmp = (Tr * + Tm1 * / ρ) / Gr (4)

  Thus, when the target engine speed Ne *, the target torque Te *, and the torque commands Tm1 *, Tm2 * of the motors MG1, MG2 are set, the target engine speed Ne * and the target torque Te * of the engine 22 are set in the engine ECU 24. The torque commands Tm1 * and Tm2 * for the motors MG1 and MG2 are transmitted to the motor ECU 40 (step S210), and the drive control routine is terminated. The engine ECU 24 that has received the target rotational speed Ne * and the target torque Te * performs fuel injection control in the engine 22 such that the engine 22 is operated at an operating point indicated by the target rotational speed Ne * and the target torque Te *. Controls such as ignition control. The motor ECU 40 that has received the torque commands Tm1 * and Tm2 * 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 *. To do.

  When the required power Pe * is less than or equal to the threshold value Pref at step 120, it is determined that the vehicle should run in the motor operation mode. When the engine 22 is operating, the engine 22 is stopped (step S220), and a torque command for the motor MG1 is issued. A value 0 is set in Tm1 * (step S230), and the processes of steps S180 to S210 are executed.

  When it is determined in step S130 that the engine 22 is not operating, a value 1 is set in the excess output request flag Fout2 in order to make an excess output request (step S240), and the torque command Tm1 * of the motor MG1 is set in the torque command Tm1 *. A motoring torque Tcr is set (step S250). Then, it is determined whether or not the rotational speed Ne of the engine 22 is larger than the threshold value Nref (step S260). When the rotational speed Ne of the engine 22 is less than or equal to the threshold value Nref, the processing of steps S180 to S210 is executed. When the number Ne is larger than the threshold value Nref, the fuel injection control and ignition control of the engine 22 are started (step S270), and the processes of steps S180 to S210 are executed. Here, the threshold value Nref is the rotational speed Ne of the engine 22 at which the fuel injection control and the ignition control are started, and is set to, for example, 800 rpm or 1000 rpm. Consider a case where the driver has stepped on the accelerator pedal 83 at the time of departure. When the accelerator pedal 83 is largely depressed, the required power Pe * is set based on the accelerator opening Acc corresponding to the accelerator pedal 83, and the required power Pe * becomes larger than the threshold value Pref, and the engine 22 is started. At this time, the value 1 is set to the excess output request flag Fout2. Then, after the engine 22 is started, if the accelerator opening Acc is equal to or greater than the threshold value Aref, a value 1 is set to the excess output request flag Fout1. Therefore, the excess output request when starting the engine 22 has priority over the excess output request when the accelerator opening Acc is larger than the threshold value Aref.

  The drive control routine has been described above. As described above, in the drive control routine, when the accelerator opening degree Acc is larger than the threshold value Aref, a value 1 is set for the excess output request flag Fout1, and when the engine 22 is started, a value 1 is set for the excess output request flag Fout2. (Steps S150 and S240). In the drive control routine, the output limit Wout of the battery 50 is used when setting the torque command Tm2 * of the motor MG2 (step S180). Next, management of the output limit Wout of the battery 50 used in such a drive control routine will be described.

  When the output management routine illustrated in FIG. 3 is executed, the battery ECU 52 firstly includes the voltage Vb from the voltage sensor 51a, the current Ib from the current sensor 51b, the battery temperature Tb from the temperature sensor 51c, and the remaining capacity (SOC). , Processing for inputting data necessary for output management of the battery 50 such as excess output request flags Fout1 and Fout2 is executed (step S300). Here, as for the remaining capacity (SOC), a value obtained by integrating the current Ib detected by the current sensor 51b is inputted from a predetermined address of a RAM (not shown) of the battery ECU 52, and an excess output request flag Fout1, Fout2 is input from the hybrid electronic control unit 70 by communication.

  When the data is thus input, the output limit Wout of the battery 50 is set based on the input battery temperature Tb and the remaining capacity (SOC) (step S310). Here, the output limit Wout to be set is predetermined as the rated output of the battery 50, and can be set according to the temperature characteristics of the battery 50 and the characteristics with respect to the remaining capacity (SOC). Then, the values of the excess output request flags Fout1 and Fout2 are checked (step S320). As described above, the excess output request flag Fout1 is set to 1 when the accelerator opening Acc is larger than the threshold value Aref in the drive control, and the excess output request flag Fout2 is set to start when the engine 22 is started by the drive control. Value 1 is set. When the excess output request flags Fout1 and Fout2 are both 0, the output management routine is terminated as it is. Therefore, the rated output is set as the output limit Wout.

  When the excess output request flag Fout1 is the value 1 and the excess output request flag Fout2 is the value 0, that is, when the accelerator opening Acc is equal to or greater than the threshold value Aref, the previous excess output processing (output larger than the rated output is output to the output limit Wout). It is determined whether or not a predetermined time T1 has elapsed since the execution of steps S350 to S420 from the setting to the cancellation (step S330), and the excess output request flag Fout1 has a value 0 and excess output. When the request flag Fout2 is a value 1, that is, when the engine 22 is started, it is determined whether or not a predetermined time T2 has elapsed since the end of the previous excess output process (step S340). Here, the predetermined times T1 and T2 are set as intervals for executing the excess output process. For example, the predetermined time T1 is set to a time such as 10 seconds or 12 seconds, and the predetermined time T2 is set to 3 seconds or 4 seconds. Set to a time such as seconds. That is, in the processes in step S330 and step S340, it is determined whether or not the time corresponding to the cause of the excess output request has elapsed since the end of the previous excess output process. When the excess output request flag Fout1 has a value of 1 and the excess output request flag Fout2 has a value of 0, when the predetermined time T1 has not elapsed since the execution of the previous excess output process has ended, or the excess output request flag Fout1 When the value 0 and the excess output request flag Fout2 is the value 1, when the predetermined time T2 has not elapsed since the end of the previous excess output process, it is determined that the excess output process should not be executed, The output management routine ends. Also in this case, the rated output is set as the output limit Wout. Thus, when the accelerator opening Acc is equal to or greater than the threshold value Aref, the execution of the previous excess output is terminated when the engine 22 is started until the predetermined time T1 has elapsed after the execution of the previous excess output process is terminated. Since the excess output process is not executed until the predetermined time T2 elapses, the battery 50 can be prevented from generating heat and the battery 50 can be further prevented from being damaged as compared with the case where the excess output process is continuously executed. can do. In addition, since the interval for executing the excess output process is set according to the factor of the excess output request, the battery 50 can be protected more appropriately compared to the case where the interval is constant regardless of the factor of the excess output request. Can do.

  When the excess output request flag Fout1 is the value 1 and the excess output request flag Fout2 is the value 0, when the predetermined time T1 has elapsed since the execution of the previous excess output process has ended, or the excess output request flag Fout1 has the value 0. When the excess output request flag Fout2 is 1 and the predetermined time T2 has elapsed since the end of the previous excess output process, the output of the battery 50 is obtained by the product of the product of the voltage Vb and the current Ib. Wb is calculated (step S350), and the excess output ΔW is calculated by subtracting the output limit Wout set as the rated output from the calculated output Wb of the battery 50 (step S360). When the calculated excess output ΔW is a positive value (step S370), the output energy Eb is obtained by integrating the excess output ΔW multiplied by the start interval time Δt (several msec in the embodiment) of the output management routine. Calculate (step S380), compare the calculated output energy Eb with the threshold value Eref (step S390), and determine whether or not a predetermined time T3 has elapsed since the start of the excess output process (step S400). . That is, in the processes of steps S350 to S390, the integral value obtained by time integration of the excess output ΔW exceeding the rated output of the battery 50 after the execution of the excess output process is started is compared with the threshold value Eref as the output energy Eb. . Here, the threshold value Eref is used to determine the end of the excess output process, and is set as energy within a range where the output exceeding the rated output from the battery 50 can be executed, and is determined by the performance of the battery 50. . The predetermined time T3 is set as a time limit for continuously executing the excess output process, and is determined by the performance of the battery 50, the magnitude of the output that is allowed to exceed. When it is determined that the output energy Eb is less than the threshold value Eref and the predetermined time T3 has not elapsed since the start of the excess output process, it is determined that the excess output may be continued, and the rated output is set. A value obtained by adding a predetermined excess output Wset to the output limit Wout that is allowed to exceed is newly set as the output limit Wout (step S410), and the output management routine is terminated. Here, the predetermined excess output Wset is for setting an upper limit output that may be output from the battery 50 beyond the rated output, and can be determined by the performance of the battery 50 or the like. If the output limit Wout is set by adding the predetermined excess output Wset to the rated output in this way, when the drive control routine is subsequently executed, the torque command Tm2 * of the motor MG2 is set within the rated output limit range. Can be increased within a limited range obtained by adding a predetermined excess output Wset. Consider a case where the driver has stepped on the accelerator pedal 83 while the engine 22 is stopped. At this time, as described above, the excess output request when starting the engine 22 is prioritized over the excess output request when the accelerator opening Acc is equal to or greater than the threshold value Aref. Therefore, if a predetermined time T2 (for example, 3 seconds) has elapsed since the execution of the previous excessive output processing has been completed, the excessive output processing is performed even if the predetermined time T1 (for example, 10 seconds) has not elapsed. Therefore, the output Wb from the battery 50 by the motoring by the motor MG1 and the output from the motor MG2 can be controlled within the range of the output limit Wout (rated output + predetermined excess output Wset) exceeding the rated output. The engine 22 can be started quickly. As a result, the driver's request can be quickly dealt with by the direct torque from the engine 22 and the torque from the motor MG2. On the other hand, in response to an excess output request when the accelerator opening degree Acc is greater than or equal to Aref, the excess output process is not executed until a predetermined time T1 has elapsed after the previous excess output process has been executed. A voltage drop or heat generation of the battery 50 can be suppressed as compared with the case where the excess output process is executed when the predetermined time T2 has elapsed after the execution of the output process is completed. By the way, although the allowance of the excess output by the predetermined excess output Wset is delayed by the start interval of the output management routine, in the embodiment, the interval is several milliseconds, so this time delay is felt to the driver. There is nothing.

  On the other hand, when the output energy Eb is equal to or greater than the threshold value Eref, or even when the output energy Eb is less than the threshold value Eref, when the predetermined time T3 has elapsed since the start of the current excess output process, the excess output process is terminated. Therefore, the value 0 is set for the output energy Eb and the value 0 is set for both the excess output request flags Fout1 and Fout2 (step S420), and the output management routine is terminated. In the embodiment, the setting of the value 0 to the excess output request flags Fout1 and Fout2 is performed by outputting a control signal from the battery ECU 52 to the hybrid electronic control unit 70 by communication.

  According to the hybrid vehicle 20 of the embodiment described above, the excess output process in which the output limit Wout obtained by adding the predetermined excess output Wset to the rated output of the battery 50 is set as the output limit Wout, and the previous time when the accelerator opening Acc is greater than or equal to the threshold value Aref. This is executed when a predetermined time T1 has elapsed since the completion of the excessive output processing, and when the engine 22 is started, a predetermined time T2 shorter than the predetermined time T1 has elapsed since the previous excessive output processing was completed. This is executed when the motor MG1, the motor MG2, etc. are driven and controlled within the range of the output limit Wout in which the rated output of the battery 50 or a value obtained by adding the predetermined excess output Wset is set. The output exceeding the rated output can be made from the battery 50 at intervals according to the battery, and the protection of the battery 50 is more appropriate. Performance of the battery 50 makes it possible to achieve can be more exhibited.

  According to the hybrid vehicle 20 of the embodiment, since the excess output request when starting the engine 22 is prioritized over the excess output request when the accelerator opening Acc is equal to or greater than the threshold value Aref, the engine 22 is started more quickly. The driver's request can be dealt with quickly.

  In the hybrid vehicle 20 of the embodiment, the excess output request when starting the engine 22 is given priority over the excess output request when the accelerator opening Acc is equal to or greater than the threshold value Aref, but may not be given priority. .

  In the hybrid vehicle 20 of the embodiment, in the output management routine of FIG. 3, it is determined whether or not to end the excess output process based on the output energy Eb and the time from the start of the execution of the excess output process. It may be determined whether or not to end the excess output process based on only one of the output energy Eb and the time from the start of the excess output process.

  In the hybrid vehicle 20 of the embodiment, in the output management routine of FIG. 3, when the accelerator opening Acc is equal to or greater than the threshold value Aref, the excess output process is performed when a predetermined time T1 has elapsed since the execution of the previous excess output process was terminated. When starting the engine 22 and starting the engine 22, the execution of the excess output process is started when a predetermined time T2 has elapsed since the end of the previous excess output process, but this predetermined time T1, T2 May be set based on the output energy Eb or the like in the previous excess output processing. An example of the output management routine in this case is shown in FIG. The output management routine of FIG. 7 is the same as the output management routine of FIG. 3 except that the processes of steps S325, S335, and S415 are added to the output management routine of FIG. In the output management routine of FIG. 7, when the excess output request flag Fout1 is 1 and the excess output request flag Fout2 is 0, that is, when the accelerator opening Acc is equal to or greater than the threshold value Aref (step S320), the previous excess output is output. The factor time t1 is set based on the stored value Eset stored in step S415, which will be described later, as the output energy Eb when the execution of the process is terminated (step S325), and the factor after the previous execution of the excess output process is terminated. It is determined whether time t1 has elapsed (step S330). On the other hand, when the excess output request flag Fout1 is 0 and the excess output request flag Fout2 is 1, that is, when the engine 22 is started, the factor time t2 is set based on the stored value Eset (step S335). It is determined whether or not the factor time t2 has elapsed since the execution of the excess output processing of (No. S340). Here, in the modified example, the factor times t1 and t2 are stored in advance by storing the relationship between the stored value Eset and the factor times t1 and t2, and when the stored value Eset is given, the factor times t1 and t2 are calculated. t2 was derived and set. FIG. 8 shows an example of the factor time setting map. As illustrated, the factor times t1 and t2 are set so as to increase as the stored value Eset increases. In the modified example, when the stored value Eset is the threshold value Eref, each of the predetermined times T1 (for example, 10 seconds) of the embodiment is set. ), T2 (for example, 3 seconds) is set. By setting the factor times T1 and T2 in this way, it is possible to permit the execution of the excess output process with a time interval corresponding to the output energy Eb in the previous excess output process. When the excess output request flag Fout1 has a value of 1 and the excess output request flag Fout2 has a value of 0, when it is determined that the factor time t1 has elapsed since the end of the previous excess output process, the excess output When the request flag Fout1 is 0 and the excess output request flag Fout2 is 1, the output energy Eb is determined when it is determined that the factor time t2 has elapsed since the end of the previous excess output process. When the output energy Eb is equal to or less than the threshold value Ebref and the predetermined time T3 has not elapsed since the start of the excess output process, the excess output Wset is set to the output limit Wout as the rated output. The added value is newly set as the output limit Wout (steps S390 to S410), and the output energy Eb is set to the threshold value Ebr. When it is larger than f or when a predetermined time T3 has elapsed since the start of the excess output process, the output energy Eb at that time is stored as a stored value Eset at a predetermined address in a RAM (not shown) (step S415). A value 0 is set in Eb and a value 0 is set in excess output request flags Fout1 and Fout2 (step S420), and the output management routine is terminated. Thus, based on the stored value Eset stored in step S415, the next time the value 1 is set in the excess output request Fout1, the factor time t1 is set in the process of step S325, and the value 1 is set in the excess output request flag Fout2 next time. Is set, the factor time t2 is set in the process of step S335.

  In the hybrid vehicle 20 of the embodiment, when the accelerator opening Acc is equal to or greater than the threshold value Aref, when the predetermined time T1 has elapsed since the execution of the previous excessive output process was terminated or when the engine 22 was started, the previous excessive output The excess output process is executed when a predetermined time T2 has elapsed after the execution of the process is completed, but the excess output process is also exceeded when the accelerator opening Acc is greater than or equal to the threshold value Aref or when the engine 22 is not started. A factor time may be set according to the factor of the output request, and the excess output process may be executed when the factor time has elapsed since the end of the previous excess output process. Further, in the hybrid vehicle 20 of the embodiment, the interval for executing the excess output process is set based on the cause of the excess output request. However, for example, a time limit for continuously executing the excess output process is also available. May be set based on the factor of the excess output request.

  In the hybrid vehicle 20 of the embodiment, when the accelerator opening Acc is larger than the threshold value Aref or when the engine 22 is started, the predetermined excess output Wset is used as an output for allowing the excess. May be set and used based on the remaining capacity (SOC) or the factor of the excess output request. This configuration will be described below as a second embodiment.

  The hybrid vehicle 20B of the second embodiment has the same hardware configuration as the hybrid vehicle 20 of the first embodiment illustrated in FIG. Therefore, in order to avoid redundant description, the hardware configuration of the hybrid vehicle 20B of the second embodiment is denoted by the same reference numeral as the hardware configuration of the hybrid vehicle 20 of the first embodiment, and the detailed description thereof is omitted. .

  In the hybrid vehicle 20B of the second embodiment, the drive control routine of FIG. 2 is executed by the hybrid electronic control unit 70 as in the hybrid vehicle 20 of the first embodiment, and the output management routine of FIG. Instead, the output management routine of FIG. 9 is executed. The output management routine of FIG. 9 sets a threshold Eref for determining the end of excess output processing based on the remaining capacity (SOC) and the cause of the excess output request, and a predetermined excess output Wset as an output for which excess is permitted. 3 is the same as the output management routine of FIG. Therefore, the routine of FIG. 9 will be described focusing on processing different from the routine of FIG. In addition, the same step number is attached | subjected about the process same as the routine of FIG. 3 among the routines of FIG.

  When the output management routine of FIG. 9 is executed, the battery ECU 52 stores data necessary for output management of the battery 50 such as the voltage Vb, current Ib, battery temperature Tb, remaining capacity (SOC), excess output request flags Fout1 and Fout2. (Step S300), an output limit Wout predetermined as the rated output of the battery 50 is set based on the input battery temperature Tb and the remaining capacity (SOC) (step S310), and excess output request flags Fout1, Fout2 Is checked (step S320). As described above, also in the second embodiment, the excess output request flag Fout1 is set to 1 when the accelerator opening Acc is larger than the threshold value Aref by drive control, and the excess output request flag Fout2 is set to the engine 22 by drive control. The value 1 is set when is started. When the excess output request flags Fout1 and Fout2 are both 0, the output management routine is terminated as it is. Therefore, the rated output is set as the output limit Wout.

  When the excess output request flag Fout1 is the value 1 and the excess output request flag Fout2 is the value 0, that is, when the accelerator opening Acc is equal to or greater than the threshold value Aref, the predetermined time T1 has elapsed since the execution of the previous excess output process was terminated. When the excess output request flag Fout1 is 0 and the excess output request flag Fout2 is 1, that is, when the engine 22 is started, the execution of the previous excess output process is terminated. Then, it is determined whether or not a predetermined time T2 has elapsed (step S340). Here, the predetermined times T1 and T2 have been described above. When the excess output request flag Fout1 has a value of 1 and the excess output request flag Fout2 has a value of 0, when the predetermined time T1 has not elapsed since the execution of the previous excess output process has ended, or the excess output request flag Fout1 When the value 0 and the excess output request flag Fout2 is the value 1, when the predetermined time T2 has not elapsed since the end of the previous excess output process, it is determined that the excess output process should not be executed, The output management routine ends. Also in this case, the rated output is set as the output limit Wout.

  When the excess output request flag Fout1 is the value 1 and the excess output request flag Fout2 is the value 0, when the predetermined time T1 has elapsed since the execution of the previous excess output process has ended, or the excess output request flag Fout1 has the value 0. When the excess output request flag Fout2 is 1 and the predetermined time T2 has elapsed since the end of the previous excess output process, the output of the battery 50 is obtained by the product of the product of the voltage Vb and the current Ib. Wb is calculated (step S350), and the excess output ΔW is calculated by subtracting the output limit Wout set as the rated output from the calculated output Wb of the battery 50 (step S360), and the calculated excess output ΔW is positive. When it is a value (step S370), the excess output ΔW is added to the output management routine start interval time Δt (in the embodiment, several ms). By integrating the multiplied by c) calculating the output energy Eb (step S380).

  Subsequently, a threshold value Eref is set based on the remaining capacity (SOC) and the excess output request flags Fout1 and Fout2 (step S382), and also predetermined based on the remaining capacity (SOC) and the excess output request flags Fout1 and Fout2. An excess output Wset is set (step S384). The processing in steps 382 and S384 is processing for setting the threshold value Eref and the predetermined excess output Wset in consideration of the state of the battery 50 and the cause of the excess output request. FIG. 10 shows an example of the relationship between the remaining capacity (SOC), the excess output request flags Fout1, Fout2, and the threshold value Eref, and an example of the relationship between the remaining capacity (SOC), the excess output request flags Fout1, Fout2, and the predetermined excess output Wset. Is shown in FIG. In the second embodiment, the threshold value Eref and the predetermined excess output Wset are set so as to increase as the remaining capacity (SOC) increases. This is because when the remaining capacity (SOC) is relatively large, the voltage drop when the battery 50 is discharged is smaller than when the remaining capacity (SOC) is relatively small, and the allowable range of the output energy Eb is increased. This is based on the fact that it is possible to increase the output range that permits the excess. Further, the threshold value Eref and the predetermined excess output Wset are such that when the excess output request flag Fout1 is 0 and the excess output request flag Fout2 is 1, that is, when the engine 22 is started, the excess output request flag Fout1 is 1. The excessive output request flag Fout2 is set to be larger than when the value is 0, that is, when the accelerator opening degree Acc is equal to or greater than the threshold value Aref. This is for starting the engine 22 more quickly or for suppressing a voltage drop or heat generation of the battery 50 when the accelerator opening degree Acc is equal to or greater than the threshold value Aref.

  Then, the calculated output energy Eb is compared with the threshold value Eref (step S390), and it is determined whether or not a predetermined time T3 has elapsed since the start of the excess output process (step S400). The predetermined time T3 has been described above. When it is determined that the output energy Eb is less than the threshold value Eref and the predetermined time T3 has not elapsed since the start of the excess output process, it is determined that the excess output may be continued, and the rated output is set. A value obtained by adding a predetermined excess output Wset to the output limit Wout that is allowed to exceed is newly set as the output limit Wout (step S410), and the output management routine is terminated. As described above, the predetermined excess output Wset is set to increase as the remaining capacity (SOC) increases, and is larger than when the accelerator opening Acc is greater than or equal to the threshold value Aref when the engine 22 is started. Therefore, the output limit Wout obtained by adding the predetermined excess output Wset to the rated output is also set to increase as the remaining capacity (SOC) increases, and the accelerator opening Acc is set to the threshold value Aref when the engine 22 is started. It is set to be larger than the above. In this way, it is determined whether or not the excess output processing is ended using the threshold value Eref based on the remaining capacity (SOC) and the excess output request flags Fout1 and Fout2, or the remaining capacity (SOC) and the excess output request flag Fout1. , Fout2 is added to the rated output and the output limit Wout is set by adding the predetermined excess output Wset to the rated output, so that the excess output processing can be performed more appropriately according to the state of the battery 50 and the cause of the excess output request. The performance of the battery 50 can be exhibited more. Of course, as in the first embodiment, the excess output process is not executed until the predetermined time corresponding to the cause of the excess output request has elapsed after the execution of the excess output process has been completed. The output exceeding the rated output can be generated from the battery 50 at intervals.

  On the other hand, when the output energy Eb is equal to or greater than the threshold value Eref, or even when the output energy Eb is less than the threshold value Eref, when the predetermined time T3 has elapsed since the start of the current excess output process, the excess output process is terminated. Therefore, the value 0 is set to the output energy Eb and the value 0 is set to the excess output request flags Fout1 and Fout2 (step S420), and the output management routine is terminated.

  According to the hybrid vehicle 20B of the second embodiment described above, when the accelerator opening Acc is greater than or equal to the threshold value Aref or when the engine 22 is started, the remaining capacity (SOC) and the factor of the excess output request (the accelerator opening Acc is A predetermined excess output Wset that is set based on whether or not the threshold Aref is exceeded or when the engine 22 is started) is added to the rated output to set the output limit Wout, and the motor is within the range of the set output limit Wout. Since drive control of MG1, motor MG2, etc. is carried out, the performance of the battery 50 can be exhibited more based on a remaining capacity (SOC) and the factor of an excess output request | requirement. Of course, as in the first embodiment, the excess output process for setting the output limit Wout by adding the predetermined excess output Wset to the rated output, and the execution of the previous excess output process is terminated when the accelerator opening Acc is equal to or greater than the threshold value Aref. Is executed when a predetermined time T1 has elapsed, and when the engine 22 is started, it is executed when a predetermined time T2 shorter than the predetermined time T1 has elapsed since the end of the previous excess output processing. The motor MG1, the motor MG2, etc. are driven and controlled within the range of the output limit Wout in which the rated output or the predetermined excess output Wset is set, so that the battery 50 can be controlled at intervals according to the cause of the excess output request. Output exceeding the rated output can be achieved, the battery 50 can be protected more appropriately, and the performance of the battery 50 It is possible to further demonstrate.

  In the hybrid vehicle 20B of the second embodiment, the threshold value Eref and the predetermined excess output Wset are set based on the remaining capacity (SOC) and the factors of excess output requests (excess output request flags Fout1, Fout2). The threshold value Eref and the predetermined excess output Wset may be set based only on the remaining capacity (SOC) regardless of the cause of the output request. Further, the output limit Wout in which the rated output is set may be considered instead of or in addition to the cause of the excess output request. An example of the relationship between the remaining capacity (SOC), the output limit Wout, and the threshold Wref when the threshold value Wref and the predetermined excess output Wset are set based on the remaining capacity (SOC) and the output limit Wout for which the rated output is set FIG. 13 shows an example of the relationship between the remaining capacity (SOC), the output limit Wout, and the predetermined excess output Wset. Since the output limit Wout at which the rated output is set is based on the battery temperature Tb and the remaining capacity (SOC), in this case, both the threshold Eref and the predetermined excess output Wset are set to the battery temperature Tb and the remaining capacity (SOC). Will be set based on. Then, since the predetermined excess output Wset is based on the battery temperature Tb and the remaining capacity (SOC), the output limit Wout obtained by adding the predetermined excess output Wset to the rated output is also based on the battery temperature Tb and the remaining capacity (SOC). Become.

  In the hybrid vehicle 20B of the second embodiment, the threshold value Eref and the predetermined excess output Wset are set based on the remaining capacity (SOC) and the factor of the excess output request, but a fixed value may be used for the threshold value Eref. Good. Further, the output energy Eb may not be calculated and the threshold value Eref may not be used. In this case, the excess output process may be terminated when a predetermined time T3 has elapsed since the start of the excess output process.

  In the hybrid vehicles 20 and 20B of the first embodiment and the second embodiment, the drive control routine is executed by the hybrid electronic control unit 70 and the output management routine is executed by the battery ECU 52. It may be executed by the electronic control unit 70.

  In the hybrid vehicle 20.20B of the first and second embodiments, the power of the motor MG2 is shifted by the reduction gear 35 and output to the ring gear shaft 32a. However, the hybrid vehicle 120 of the modified example of FIG. As illustrated, the power of the motor MG2 is output to an axle (an axle connected to the wheels 64a and 64b in FIG. 14) different from the axle to which the ring gear shaft 32a is connected (the axle to which the drive wheels 63a and 63b are connected). It is good also as what to do.

  In the hybrid vehicles 20 and 20B of the first and second embodiments, 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. However, as illustrated in the hybrid vehicle 220 of the modification of FIG. 15, the inner rotor 232 connected to the crankshaft 26 of the engine 22 and the outer shaft connected to the drive shaft that outputs power to the drive wheels 63a and 63b. The rotor 234 may be provided, and a counter-rotor motor 230 that transmits a part of the power of the engine 22 to the drive shaft and converts the remaining power into electric power may be provided.

  In the embodiment, the hybrid vehicle 20 including the power output device including the engine 22, the motors MG1 and MG2, and the battery 50 has been described. However, it is assumed that the power output device is mounted on a vehicle other than the vehicle, a ship, an aircraft, and the like. Alternatively, a form of the power output apparatus or a control method of the power output apparatus may be used. The power output apparatus is not limited to this configuration, and may include a power source other than the engine 22 or may not include a power source such as the engine 22.

  The best mode for carrying out the present invention has been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention. Of course, it can be implemented in the form.

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 drive control routine performed by the electronic control unit for hybrids 70 of an Example. It is a flowchart which shows an example of the output management routine performed by battery ECU52 of an Example. It is explanatory drawing which shows an example of the map for request | requirement torque setting. It is explanatory drawing which shows a mode that an example of the operating line of the engine 22, and target rotational speed Ne * and target torque Te * are set. FIG. 4 is an explanatory diagram showing an example of a collinear diagram for dynamically explaining rotational elements of a power distribution and integration mechanism 30. It is a flowchart which shows an example of the output management routine performed by battery ECU52 of a modification. It is explanatory drawing which shows an example of the map for factor time setting. It is a flowchart which shows an example of the output management routine performed by battery ECU52 of 2nd Example. It is explanatory drawing which shows an example of the relationship between remaining capacity (SOC), excess output request | requirement flag Fout1, Fout2, and threshold value Eref. It is explanatory drawing which shows an example of the relationship between remaining capacity (SOC), excess output request flag Fout1, Fout2, and predetermined excess output Wset. It is explanatory drawing which shows an example of the relationship between remaining capacity (SOC), output restrictions Wout, and threshold value Eref. It is explanatory drawing which shows an example of the relationship between remaining capacity (SOC), output limitation Wout, and predetermined excess output Wset. 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, 20B, 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, 51a voltage sensor, 51b current sensor, 51c temperature sensor, 52 for battery Electronic control unit (battery ECU), 54 power line, 60 gear mechanism, 62 differential gear, 63a, 63b, 64a, 64b drive wheel, 70 hybrid electronic control unit, 72 CPU, 74 RO M, 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 Counter rotor motor, 232 Inner rotor 234 Outer rotor, MG1, MG2 motor.

Claims (12)

A power output device that outputs power to a drive shaft,
A power source capable of outputting power to the drive shaft;
A plurality of devices having a starting device used for starting the power source and an electric motor capable of inputting and outputting power to the drive shaft ;
Power storage means capable of supplying power to the plurality of devices;
During normal permit power supply to the plurality of devices within the rated output of the accumulator unit, when the excess output request that exceeds the rated output of the accumulator unit is made, factors ultra excessive output request of the electric motor When it is an excess output request for driving for increasing the output, the first time is set as a factor time as a time based on the factor of the excess output request, and the factor of the excess output request is for starting the power source. When it is a start excess output request, a second time shorter than the first time is set as the factor time, and the set factor time is used as an excess permission condition that has passed since the end of the previous excess output permission. Output permitting means for permitting output from the power storage means until a predetermined excess output exceeding the rated output,
Control means for controlling the plurality of devices within the scope of permission by the output permission means;
A power output device comprising: The factor time is set tends to be longer the larger the degree of excess output of the preceding claims 1 power output apparatus in accordance. The power output device according to claim 1 or 2 ,
Comprising a state detecting means for detecting the state of the power storage means,
The predetermined excess output is an output set based on the detected state of the power storage means. The power output device according to claim 3 ,
The state detection means is means for detecting an amount of electricity stored so as to be discharged from the electricity storage means,
The predetermined excess output is an output that is set to increase as the detected amount of stored electricity increases. The power output device according to any one of claims 1 to 4 , wherein the predetermined excess output is an output set based on a factor of the excess output request. The power output device according to any one of claims 1 to 5 ,
The power source is an internal combustion engine;
The starting device is connected to the output shaft of the internal combustion engine and the drive shaft, and is a power power input / output device capable of inputting / outputting power to / from the output shaft or the drive shaft with input / output of power and power. Is a power output device. The power motive power input / output device is connected to the three shafts of the output shaft, the drive shaft, and the rotating shaft of the internal combustion engine, and the remaining shaft based on the power input / output to / from any two of the three shafts. The power output device according to claim 6 , wherein the power output device is a device comprising: a three-axis power input / output device that inputs and outputs power to and a generator that inputs and outputs power to the rotary shaft. The power drive input / output device includes a first rotor connected to an output shaft of the internal combustion engine and a second rotor connected to the drive shaft, and the first rotor and the second rotor. The power output apparatus according to claim 6 , wherein the power output apparatus is a counter-rotor electric motor that rotates by rotating relative to the rotor. An automobile comprising the power output device according to any one of claims 1 to 8 and an axle connected to the drive shaft. A power source capable of outputting driving power;
A starting device capable of starting the power source;
An electric motor capable of outputting driving power;
Power storage means capable of supplying power to the starting device and the electric motor;
Normally, power supply to a plurality of devices including the starting device and the electric motor is permitted within the rated output range of the power storage means , and when an excess output request exceeding the rated output of the power storage means is made , When the factor of the excess output request is a drive excess output request for increasing the output of the motor, the first time is set as a factor time as a time based on the factor of the excess output request and the factor of the excess output request Is a start excess output request for starting the power source, a second time shorter than the first time is set as the factor time, and the set factor time is used to permit the previous excess output. An output permission means for permitting an output from the power storage means to a predetermined excess output exceeding the rated output using an excess permission condition that has passed since the end ;
Control means for controlling the plurality of devices within the scope of permission by the output permission means;
A hybrid car with The hybrid vehicle according to claim 10 ,
The power source is connected to the first axle so that power can be output,
The electric motor is a hybrid vehicle connected to a second axle different from the first axle so that power can be output. A plurality of devices having a power source capable of outputting power to the drive shaft; a starting device used for starting the power source; and an electric motor capable of inputting / outputting power to the drive shaft; and power to the plurality of devices A power output device comprising a power storage means capable of supplying
During normal permit power supply to the plurality of devices within the rated output of the accumulator unit, when the excess output request that exceeds the rated output of the accumulator unit is made, factors ultra excessive output request of the electric motor When it is an excess output request for driving for increasing the output, the first time is set as a factor time as a time based on the factor of the excess output request, and the factor of the excess output request is for starting the power source. When it is a start excess output request, a second time shorter than the first time is set as the factor time, and the set factor time is used as an excess permission condition that has passed since the end of the previous excess output permission. Permitting the output from the power storage means up to a predetermined excess output exceeding the rated output
A method for controlling a power output apparatus, wherein the plurality of devices are controlled within the permitted range.

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