JP2010125956A - System for controlling electric vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for controlling an electric vehicle capable of improving energy efficiency as a vehicle system when electric power is consumed at the start of a power generator. <P>SOLUTION: The system for controlling the electric vehicle includes: a power generator 113; a drive device 114; a power storage device 108; an operation control device 115 for controlling operations of the electrically connected three devices 108, 113, 114. The operation control device 115 drives a power generation motor 102 by consuming electric power from an electric power supply source when a start request of the power generator 113 is generated, and performs power generation mode transition control for shifting to a power generation state. A power generation mode transition means acquires an internal resistance value of the power storage device 108 by estimation or measurement, selects a supply pattern which needs small energy consumption between a drive device supply pattern for setting an electric power supply source necessary for the start of the power generator 113 to the drive device 114 and a power storage device supply pattern for setting an electric power supply source necessary for the start of the power generator 113 to the power storage device 108 based on the acquired internal resistance value of the power storage device 108. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a control system for an electric vehicle applied to an electric vehicle equipped with a power generator such as a series hybrid vehicle.

  2. Description of the Related Art Conventionally, a control system for an electric vehicle equipped with a generator starts the engine by driving the generator as a motor for starting the engine with a battery as appropriate during traveling. Then, after starting the engine, the generator is switched from the operating state as an electric motor to the operating state as an original generator to generate electric power, and the generated electric power is supplied to a battery and a traveling motor ( For example, see Patent Document 1).

Specifically, first, in order to crank the power generation engine with the power generation motor, the power generation motor is controlled by the power generation inverter so that the rotation speed of the power generation engine becomes a predetermined value. Thereafter, when the power generation engine starts combustion and generates torque, the power generation inverter controls to generate regenerative torque from the power generation motor in order to keep the rotation speed of the power generation engine at a predetermined value. As a result, the power generation device enters a power generation state and starts supplying power.
JP-A-8-61193

  However, in a conventional control system for an electric vehicle, a power generation device using a power generation engine as a drive source is a device that once consumes power at the start of operation and then supplies power. The power consumption is supplied from a battery. On the other hand, during regeneration, regenerative power is stored in the battery.

  Therefore, when the power consumption required for the operation of the power generation device is supplied from the power storage device depending on the operating state and operating environment of the power storage device, for example, the internal resistance of the power storage device, the energy efficiency of the vehicle system is reduced. However, there was a problem that the power generator was not necessarily operated efficiently.

  The present invention has been made paying attention to the above-mentioned problem, and when consuming electric power at the start of the power generation device, the vehicle system is selected by selecting, as an electric power supply source, a power storage device and a drive device that consume less energy. An object of the present invention is to provide an electric vehicle control system capable of improving the energy efficiency.

In order to achieve the above object, in the control system for an electric vehicle according to the present invention, a power generation device having a power generation engine as a drive source of the power generation motor and having a power generation inverter, a drive motor for driving and regenerative braking of the vehicle, and a drive having a drive inverter The apparatus includes a device, a power storage device that stores electric power, and an operation control device that controls operations of three electrically connected devices. When the start request for the power generation device is generated, the operation control device consumes power from a power supply source to drive the power generation motor, and after the power generation engine is started, the power generated by the power generation motor is generated. Power generation mode transition control means for transitioning to the power generation state to be supplied is provided.
In the electric vehicle control system, the power generation mode transition control means acquires the internal resistance value of the power storage device by estimation or measurement, and is necessary for starting the power generation device based on the acquired internal resistance value of the power storage device. A supply pattern with low energy consumption is selected from among a drive device supply pattern in which the power supply source is the drive device and a power storage device supply pattern in which the power supply source required for starting the power generation device is the power storage device.

Therefore, in the control system for an electric vehicle according to the present invention, when the power generation device transitions to the power generation state in response to the start request of the power generation device, the internal resistance value of the power storage device is acquired by estimation or measurement in the power generation mode transition control means. Based on the acquired internal resistance value of the power storage device, a drive device supply pattern using the power supply source necessary for starting the power generation device as a drive device, and a power storage using the power supply source required for starting the power generation device as the power storage device A supply pattern with low energy consumption is selected from the apparatus supply patterns.
That is, the difference between the total loss when the drive device is selected as the power supply source necessary for starting the power generation device and the total loss when the power storage device is selected varies depending on the operating state, operating environment, etc. of the power storage device It largely depends on the internal resistance loss. This is because the effect of the conversion loss of the drive device and the power generation device is suppressed by the amount that is offset by the difference in total loss, but the effect of the internal resistance loss of the power storage device that occurs on the selection side of the power storage device supply pattern is This is because the difference remains. On the other hand, since the internal resistance value of the power storage device is acquired as input information, any of the drive device and the power storage device can be used as a power supply source necessary for starting the power generation device depending on the size of the internal resistance value. If you choose, you can know whether the energy consumption will decrease.
As a result, when power is consumed in starting the power generation device, the energy efficiency of the vehicle system can be improved by selecting, as the power supply source, the side of the power storage device and the drive device that consumes less energy.

  Hereinafter, the best mode for realizing an electric vehicle control system of the present invention will be described based on Examples 1 to 4 shown in the drawings.

First, the configuration will be described.
FIG. 1 is an overall system block diagram showing an electric vehicle control system having a series hybrid configuration according to the first embodiment. The system configuration will be described below with reference to FIG.

  As shown in FIG. 1, the control system for an electric vehicle according to the first embodiment includes a power generation engine 101, a power generation motor 102, a power generation inverter 103, a drive inverter 104, a drive motor 105, a differential reduction gear 106, Drive wheel 107, power storage device 108, electric accessory 109, power storage system control unit 110, power generation system control unit 111, drive system control unit 112, power generation device 113, drive device 114, and operation control device 115.

  In this electric vehicle, a drive device 114 including a drive motor 105 and a drive inverter 104 that controls the drive motor 105 takes out the electric power stored in the power storage device 108 such as a battery unit and converts it into motive power. In response, the power is converted by the differential speed reducer 106 and then the drive wheel 107 is driven to drive the electric vehicle. The electric vehicle has a main purpose of extending the cruising distance to the electric vehicle, and includes a power generation motor 102, a power generation inverter 103 that controls the power generation motor 102, and a power generation engine 101 that is a drive source of the power generation motor 102. This is a generator-mounted electric vehicle with the addition of.

  In the electric vehicle, the operation control device 115 includes a power storage system control unit 110, a power generation system control unit 111, and a drive system control unit 112. The power storage system control unit 110 acquires information from the power storage device 108 and outputs control information to the power generation system control unit 111 and the drive system control unit 112. The power generation system control unit 111 acquires information from the power storage system control unit 110 and the drive system control unit 112, and outputs a control command to the power generation apparatus 113. The drive system control unit 112 acquires information from the power storage system control unit 110 and the power generation system control unit 111, acquires a driver input, and outputs a control command to the drive device 114.

  The power storage system control unit 110 acquires parameters of the power storage device 108 such as terminal voltage, energization current, temperature, internal resistance, and stored power amount by measurement or estimation. Then, using the acquired parameters, it is determined whether power generation / non-power generation is necessary, and the request is sent to the power generation system control unit 111. In addition, the allowable power range of the power storage device 108 is calculated and sent to the drive system control unit 112 and the power generation system control unit 111.

  The drive system control unit 112 controls the drive device 114 so that the drive wheel 107 generates a drive force based on the driver's accelerator operation.

  The power generation system control unit 111 controls the power generation device 113 so that the power generation engine 101 and the power generation motor 102 are stopped during non-power generation, so that the power generation engine 101 and the power generation motor 102 operate in an efficient region during power generation. Next, the power generation device 113 is controlled.

  The electric auxiliary machine 109 is a general term for various electric load devices mounted on the vehicle such as an air conditioner and a car navigation system.

  Furthermore, the drive system control unit 112 and the power generation system control unit 111 operate in a coordinated manner so that the input / output power of the power storage device 108 is within the permitted power range determined by the internal state of the power storage device 108.

  FIG. 2 is a flowchart showing the flow of power generation mode transition control processing executed by the operation control device 115 of the first embodiment (power generation mode transition control means). FIG. 3 is a diagram illustrating a relational characteristic of a total loss difference ([total loss during independent charge / discharge] − [total loss during direct distribution]) with respect to the battery internal resistance value in the control system of the first embodiment. Hereinafter, each step of the flowchart of FIG. 2 will be described.

  In step S101, it is determined whether or not there is a power generation request of the power generation device 113 by starting the power generation engine 101. If YES (power generation request is present), the process proceeds to step S102. If NO (power generation request is not present), the determination in step S101 is performed. repeat.

  In step S102, following the determination that there is a power generation request in step S101, the determination in the non-charge state in step S107, or the determination in the charge state in step S110, the charge amount of the power storage device 108 is It is determined whether or not the lower limit value is exceeded. If YES (charge amount> lower limit value), the process proceeds to step S103. If NO (charge amount ≦ lower limit value), the process proceeds to step S111.

  In step S103, following the determination that charge amount> lower limit value in step S102, the storage system control unit 110 obtains the internal resistance value of the power storage device 108 by estimation or measurement, and proceeds to step S104 (internal resistance) Value acquisition unit).

In step S104, following the acquisition of the internal resistance value in step S103, the sum of the internal resistance loss of power storage device 108, the conversion loss of drive device 114, and the conversion loss of power generation device 113 is set as the total loss, and the drive device supply pattern is selected. The internal resistance measurement value that matches the total loss when the power storage device supply pattern is selected is acquired, and the process proceeds to step S105 (internal resistance threshold setting unit).
Here, the internal resistance measurement value at which the total loss when the drive device supply pattern is selected and the total loss when the power supply device supply pattern is selected is the difference between the total internal loss and the battery internal resistance value shown in FIG. The total internal loss of the battery]-[total loss during direct distribution]) is the battery internal resistance value when the total loss difference = 0. Note that the total loss at the time of independent charging / discharging is the total loss at the time of selecting the power storage device supply pattern, and the total loss at the time of direct power distribution is the total loss at the time of selecting the drive device supply pattern.

In step S105, following the acquisition of the internal resistance measurement value in which the total loss when the drive device supply pattern is selected in step S104 and the total loss when the power storage device supply pattern is selected, the acquired internal resistance measurement value is used as the internal resistance threshold value. Set and proceed to step S106 (internal resistance threshold value setting unit).
Here, the “internal resistance threshold value” refers to an internal resistance value that serves as a selection criterion for selecting a drive device supply pattern or a power storage device supply pattern as a power supply source for a power generation request.

  In step S106, following the setting of the internal resistance threshold value in step S105, it is determined whether or not the internal resistance value acquired in step S103 is greater than or equal to the internal resistance threshold value set in step S105, and YES (internal resistance value ≧ In the case of (internal resistance threshold), the process proceeds to step S107, and in the case of NO (internal resistance value <internal resistance threshold), the process proceeds to step S110 (internal resistance value comparison unit).

In step S107, following the determination that the internal resistance value ≧ the internal resistance threshold value in step S106, it is determined whether or not the power storage device 108 is in a charged state. If YES (charged state), the process proceeds to step S108. In the case of NO (non-charged state), the process returns to step S102.
Here, the reason that the “charge state” is not “regenerating operation in the driving device 114” is that the battery is not charged even during the regenerating operation, for example, regenerative power is consumed by the electric auxiliary device 109. This is because there are cases.

  In step S108, following the determination in step S107 that the charging state is due to the regenerative operation of the driving device 114, a driving device supply pattern for starting the power generation device 113 by consuming electric power due to the regenerative operation of the driving device 114 is selected. The process proceeds to step S109 (drive device supply pattern selection unit).

In step S109, following the selection of the drive device supply pattern in step S108 or the selection of the power storage device supply pattern in step S111, power from the power supply source is consumed, and the power generation device 113 is shifted to the power generation state. Go to the end.
Here, the “power generation state” means that when the power generation engine 101 is cranked by the power generation motor 102 and the power generation engine 101 starts combustion and generates torque, the power generation inverter 103 maintains the rotation speed of the power generation engine 101 at a predetermined value. By performing the control, it means a state in which regenerative torque is generated from the power generation motor 102 and the power generated by the power generation motor 102 is supplied from the power generation apparatus 113 to the outside.

  In step S110, following the determination that internal resistance value <internal resistance threshold value in step S106, it is determined whether or not power storage device 108 is in a charged state. If YES (charged state), the process returns to step S102. In the case of NO (non-charged state), the process proceeds to step S111.

  In step S111, following the determination in step S110 that the battery is not charged, or the determination in step S102 that the charge amount ≦ the lower limit value, the stored power of power storage device 108 is consumed and power generation device 113 is The power storage device supply pattern to be started is selected, and the process proceeds to step S109 (power storage device supply pattern selection unit).

Next, the operation will be described.
The operations in the control system for the electric vehicle according to the first embodiment are “power generation device operation at power generation mode transition”, “power generation mode transition control operation by selection of power supply source”, “power generation state when charge amount is lower than lower limit value” This will be described separately in terms of “transition action”.

[Power generator operation during power generation mode transition]
FIG. 4 is a time chart showing characteristics of the power generation engine torque, the power generation engine speed, and the power generation motor power in the process in which the power generation apparatus of the first embodiment transitions from the non-power generation state to the power generation state. Hereinafter, the operation of the power generation apparatus during the power generation mode transition will be described with reference to FIG.

  First, in the section of T0 ≦ T ≦ T1, the power generation device 113 is in a non-power generation state, and the power generation engine 101 is not combusting and is not rotating. The generator motor 102 is also at rest and no power is being transferred.

  In the section of T1 <T ≦ T2, first, since the power generation device 113 transitions to the power generation state, the torque and the rotation speed of the power generation engine 101 that can operate the power generation device 113 in an efficient region are respectively set to the target torque and the target rotation. Set as a number. Next, as shown in the power generation engine speed characteristic of FIG. 4, the power generation motor 102 is controlled by the power generation inverter 103 so that the power generation engine 101 reaches the target speed. That is, since the generator motor 102 cranks the generator engine 101 and the generator engine 101 does not combust until the target engine speed is reached, as shown in the generator engine torque characteristic of FIG. As the number rises, the friction torque increases. At this time, the generator motor 102 consumes power as shown in the generator motor power characteristic of FIG. 4 in order to overcome the friction torque and increase the rotational speed of the generator engine 101.

  In the section of T2 <T ≦ T3, since the rotation speed of the power generation engine 101 has reached the target rotation speed, combustion is started, and the torque of the power generation engine 101 becomes the target torque as shown in the power generation engine torque characteristics of FIG. It is in a state of rising until it reaches. In order to maintain the predetermined number of revolutions, the generator motor 102 shifts from a state where power is consumed to a state where it generates power as the generator engine torque increases, as shown in the generator motor power characteristic of FIG. Go.

  In the section of T> T3, as shown in the power generation engine torque characteristic and the power generation engine speed characteristic in FIG. 4, the torque and the speed of the power generation engine 101 reach the target torque and the target speed, respectively, as shown in FIG. As shown in the power generation motor power characteristics, the power generation motor 102 generates power according to the output of the power generation engine 101.

  From the above description, it is understood that the power generation device 113 is a device that once consumes power at the start of operation and then supplies power.

[Power generation mode transition control action by selecting power supply source]
Hereinafter, the power generation mode transition control operation according to the selection of the power supply source will be described based on the flowchart shown in FIG.

  When the power generation request is made and the charge amount condition that the charge amount of the power storage device 108 exceeds the lower limit value is satisfied, in the flowchart of FIG. 2, step S101 → step S102 → step S103 → step S104 → step S105 → step Proceed to S106. That is, in step S103, the internal resistance value of power storage device 108 is acquired by estimation or measurement. In the next step S104, an internal resistance measurement value in which the total loss when the drive device supply pattern is selected and the total loss when the power storage device supply pattern is selected is obtained. In the next step S105, the acquired internal resistance measurement value is set as the internal resistance threshold value. In the next step S106, it is determined whether or not the internal resistance value acquired in step S103 is greater than or equal to the internal resistance threshold set in step S105.

  If it is determined in step S106 that the internal resistance value ≧ the internal resistance threshold value, the process proceeds to step S107. In step S107, it is determined whether or not the power storage device 108 is in a charged state. Until the power storage device 108 is charged, the flow of step S102 → step S103 → step S104 → step S105 → step S106 → step S107 is repeated.

  Then, when it is determined in step S107 that power storage device 108 is in a charged state or in a charged state, the process proceeds from step S107 to step S108, where the power generated by the regenerative operation of drive device 114 is consumed and power generation device 113 is The drive device supply pattern to be started is selected, and in the next step S109, the drive device 114 is set as the power supply source, the power from the power supply source is consumed, and the power generation device 113 is shifted to the power generation state.

  On the other hand, if it is determined in step S106 that the internal resistance value is smaller than the internal resistance threshold value, the process proceeds to step S110. In step S110, it is determined whether or not the power storage device 108 is in a charged state. Until the power storage device 108 is in a non-charged state, the flow of step S102 → step S103 → step S104 → step S105 → step S106 → step S110 is repeated.

  Then, if it is determined in step S110 that power storage device 108 is in a non-charged state or a non-charged state, the process proceeds from step S110 to step S111, and the power storage device 108 is consumed by consuming stored power in power storage device 108. The power storage device supply pattern to be started is selected, and in the next step S109, the power storage device 108 is set as the power supply source, the power from the power supply source is consumed, and the power generation device 113 is shifted to the power generation state.

  In the comparative example presented above (Japanese Patent Laid-Open No. 8-61193), since the power consumption required for the operation of the power generation device is always supplied from the power storage device, the power generation device cannot always be started efficiently. It was. In addition, the power supply source consumed by the power generation apparatus is not particularly focused on.

  On the other hand, in the first embodiment, in the power generator of the series hybrid vehicle, the power source required for starting the operation of the power generator 113 is not necessarily limited to the power storage device 108, and the drive device 114 is in a regenerative state. In such a case, attention was paid to the point that the signal may be supplied directly from the driving device 114.

  In addition, the power consumption required for the operation of the power generation device 113 is supplied from the power storage device 108 because it depends on the operating state and operating environment of the power storage device 108 and the driving device 114, for example, the internal resistance of the power storage device 108, etc. It has been recognized that there is a difference in energy efficiency between the vehicle system and the case where the regenerative power is supplied during regeneration of the drive device 114.

  Then, the power supply source consumed by the power generation device 113 is the drive device 114 if the drive device 114 is in the regenerative state in the period during which power is consumed, that is, in the T1 <T ≦ T2 section shown in FIG. Otherwise, by adopting the power storage device 108, a configuration is adopted in which the power generation device 113 is started in a state of high energy efficiency.

In the first embodiment, when the power generation device 113 is shifted to the power generation state in response to the start request of the power generation device 113, the power supply source necessary for starting the power generation device 113 is determined as the drive device 114 based on the acquired internal resistance value of the power storage device 108. The power generation mode transition control is performed to select a supply pattern with low energy consumption among the drive device supply pattern to be performed and the power storage device supply pattern in which the power supply source necessary for starting the power generation device 113 is the power storage device 108.
That is, the difference between the total loss when the drive device 114 is selected as the power supply source necessary for starting the power generation device 113 and the total loss when the power storage device 108 is selected depends on the operating state, operating environment, and the like of the power storage device 108. This largely depends on the internal resistance loss of the power storage device 108 that fluctuates. Because the influence of the conversion loss of the drive device 114 and the power generation device 113 is suppressed by the amount offset by the difference in total loss, the influence of the internal resistance loss of the power storage device 108 that occurs on the selection side of the power storage device supply pattern is This is because the difference in total loss remains. On the other hand, since the internal resistance value of the power storage device 108 is acquired as input information, depending on the size of the internal resistance value, as the power supply source necessary for starting the power generation device 113, the drive device 114 and the power storage device 108 It is possible to know which device is selected to reduce energy consumption.
Therefore, when consuming electric power at the start of the power generation device 113, based on the internal resistance value of the power storage device 108, the power consumption source 108 and the driving device 114 are selected as the power supply source by selecting the side that consumes less energy. The energy efficiency of the system is improved.

In the first embodiment, an internal resistance value serving as a selection criterion for selecting a drive device supply pattern or a power storage device supply pattern is set as an internal resistance threshold, and the internal resistance value and the internal resistance of the power storage device 108 are set. When the internal resistance value of the power storage device 108 is equal to or greater than the internal resistance threshold value, the drive device supply pattern is selected. When the internal resistance value of the power storage device 108 is less than the internal resistance threshold value, the power storage device supply pattern is selected. Power generation mode transition control is performed.
In this way, the internal resistance value of the power storage device 108 is selected from the drive device supply pattern and the power storage device supply pattern by comparing the internal resistance threshold values.
Therefore, it is possible to calculate the total loss when the driving device 114 is selected and the total loss when the power storage device 108 is selected, respectively, and it is not necessary to perform a cumbersome calculation process or the like to determine the side with less energy consumption. The device side that consumes less energy is selected by a simple comparison process using the internal resistance threshold value.

In the first embodiment, the sum of the internal resistance loss of the power storage device 108, the conversion loss of the drive device 114, and the conversion loss of the power generation device 113 is defined as the total loss, and the total loss when the drive device supply pattern is selected, and the power storage device supply pattern The internal resistance measurement value that matches the total loss when selecting is set as the internal resistance threshold value.
Therefore, if the total loss is measured in advance by experiment, the internal resistance measurement value is obtained as the measurement result, and this measurement value is stored in the memory, the internal resistance threshold value can be determined by a simple process of reading from the memory. Is set.

In the first embodiment, when the power storage device 108 is not in the charged state, the drive device supply pattern is selected after waiting for the power storage device 108 to be in the charged state by the regenerative operation of the drive device 114.
Therefore, when it is determined that selection of the drive device supply pattern is preferable, when the drive device 114 is forcibly regenerated and the drive device supply pattern is selected, the drive device 114 performing the drive operation is regenerated. Since it is necessary to forcibly switch to, energy consumption is required. On the other hand, when the drive system control unit 112 waits for the regeneration operation to start and selects the drive device supply pattern using the transition to the regeneration operation, the energy consumption is reduced, and the vehicle system Efficiency is improved.

In Example 1, when the power storage device 108 is in a charged state, the power storage device supply pattern is selected after waiting for the power storage device 108 to be in a non-charged state.
Therefore, when it is determined that selection of the power storage device supply pattern is preferable, if the regenerative operation by the drive device 114 is in a charged state, the regenerative operation in the drive device 114 is stopped during the operation, and the power storage device supply Switching to a pattern requires energy consumption because it involves a forced stop operation and a start operation. On the other hand, when the power storage device supply pattern is selected after completion of the regenerative operation in the driving device 114, the energy consumption is reduced, and the efficiency of the vehicle system is improved.

[Transition to the power generation state when the charge level is below the lower limit]
Hereinafter, the transition action to the power generation state when the charge amount of the power storage device 108 is equal to or lower than the lower limit value will be described using the flowchart of FIG.
When there is a power generation request, the flow of steps S102 → step S103 → step S104 → step S105 → step S106 → step S107 is repeated until the power storage device 108 is determined to be charged in step S107. And In the middle of this waiting time, when the charge amount condition is not satisfied, that is, when the charge amount of the power storage device 108 becomes lower than the lower limit value, the process proceeds to step S101 → step S102 → step S111 → step S109 in the flowchart of FIG. . Therefore, when the charge amount condition is not established, the power supply source selection pattern is selected in which the power supply source consumed by the power generation device 113 is set as the power storage device 108 in step S111.

  That is, the control system for the electric vehicle according to the first embodiment determines whether or not the energy efficiency of the vehicle system is good with respect to the generation of the start request of the power generation device 113 and makes the power generation device 113 transition to the power generation state. Is to decide. The same applies to Examples 2 to 4. Therefore, as a result of waiting for a state where the power generation device 113 can be efficiently started even though a start request (power generation request) for the power generation device 113 is generated, the stored power amount of the power storage device 108 is bottomed out. There is a fear.

  On the other hand, in the first embodiment, after the generation request is generated, it is determined whether the power storage device 108 needs to be charged immediately. When the power storage device 108 needs to be charged immediately (charge amount ≦ lower limit value), the power storage device is supplied promptly. A procedure of selecting a pattern and causing the power generation device 113 to transition to a power generation state is added. Therefore, it is avoided that the power storage device 108 continues to be discharged even though the stored power amount of the power storage device 108 has bottomed out.

Next, the effect will be described.
In the control system for an electric vehicle according to the first embodiment, the following effects can be obtained.

  (1) A power generator 113 having a power generation engine 101 as a drive source of the power generation motor 102 and having a power generation inverter 103, a drive motor 105 for driving and regenerative braking of the vehicle, and a drive device 114 having a drive inverter 104, and storing electric power The power storage device 108 and an operation control device 115 that controls the operation of the three devices 108, 113, and 114 that are electrically connected are provided. When the start request for the power generation device 113 is generated, the operation control device 115 receives power from the power supply source. Control of an electric vehicle having power generation mode transition control means for transitioning to a power generation state in which electric power is consumed to drive the power generation motor 102 and the power generation engine 101 is started to supply power generated by the power generation motor 102 In the system, the power generation mode transition control means (FIG. 2) acquires the internal resistance value of the power storage device 108 by estimation or measurement, and acquires the acquired internal resistance of the power storage device 108. Based on the value, the power supply source necessary for starting the power generation device 113 is the drive device 114 and the power storage device 108 is the power supply source required for starting the power generation device 113. A supply pattern with low energy consumption is selected from among the supply patterns. For this reason, when power is consumed in starting the power generation device, the energy efficiency of the vehicle system can be improved by selecting, as the power supply source, the side of the power storage device 108 and the drive device 114 that consumes less energy. .

  (2) The drive device supply pattern is a pattern that consumes power generated by the regenerative operation of the drive device 114 to start the power generation device 113, and the power storage device supply pattern consumes stored power of the power storage device 108. The power generation mode transition control means (FIG. 2) sets the internal resistance value of the power storage device 108 when the power generation device start request is generated (YES in step S101). An internal resistance value acquisition unit (step S103) acquired by estimation or measurement, and an internal resistance value serving as a selection criterion for selecting the drive device supply pattern or the power storage device supply pattern are set as an internal resistance threshold value. An internal resistance threshold value setting unit (step S104, step S105) to be set, and an internal resistance value comparison unit (step S10) for comparing the internal resistance value of the power storage device 108 with the internal resistance threshold value. 6), a driving device supply pattern selection unit (step S108) for selecting the driving device supply pattern when the internal resistance value of the power storage device 108 is equal to or greater than an internal resistance threshold, and the internal resistance value of the power storage device 108 is internal A power storage device supply pattern selection unit (step S111) that selects the power storage device supply pattern when the resistance is less than the threshold value; For this reason, the device side with low energy consumption can be selected by a simple comparison process using the internal resistance value of the power storage device 108 and the internal resistance threshold value serving as a selection criterion.

  (3) The internal resistance threshold value setting unit selects the drive device supply pattern by setting the sum of the internal resistance loss of the power storage device 108, the conversion loss of the drive device 114, and the conversion loss of the power generation device 113 as a total loss. Internal resistance measurement value that matches the total loss when the power storage device supply pattern is selected is acquired (step S104), and the acquired internal resistance measurement value is set as the internal resistance threshold value (step S105). ). For this reason, it becomes a selection criterion for selecting a pattern having a smaller total loss among the drive device supply pattern and the power storage device supply pattern by a simple process of reading out the internal resistance threshold value obtained from the experimental data performed in advance from the memory. An internal resistance threshold can be set.

  (4) The drive device supply pattern selection unit waits for the power storage device 108 to be charged by the regenerative operation of the drive device 114 when the power storage device 108 is not charged (step S107), and then the drive A device supply pattern is selected (step S108). For this reason, it is possible to improve the efficiency of the vehicle system by selecting the drive device supply pattern using the fact that the drive system control unit 112 has shifted to the regenerative operation and suppressing energy loss due to useless switching operation. .

  (5) The power generation mode transition control means (FIG. 2) includes a charge amount determination unit (step S102) for determining whether or not the charge amount to the power storage device 108 exceeds a lower limit value. If it is equal to or lower than the lower limit value, a power storage device supply pattern in which the power supply source consumed by the power generation device 113 is the power storage device 108 is selected in preference to the power supply source selection process (step S111). For this reason, it is possible to prevent the power storage device 108 from continuing the discharge state even though the stored power amount of the power storage device 108 has bottomed out.

  (6) When the power storage device 108 is in a charged state, the power storage device supply pattern selection unit waits for the power storage device 108 to be in a non-charged state (step S110), and then selects the power storage device supply pattern. (Step S111). Therefore, the efficiency of the vehicle system can be improved by waiting for the end of the regenerative operation in the drive device 114, selecting the power storage device supply pattern, and suppressing energy loss due to useless switching operation.

  The second embodiment is an example in which the open circuit voltage (= no load voltage) of the power storage device is used as the influence element information of the conversion loss, and the internal resistance threshold is set according to the open circuit voltage.

First, the configuration will be described.
FIG. 5 is a flowchart showing the flow of power generation mode transition control processing executed by the operation control device 115 of the second embodiment (power generation mode transition control means). FIG. 6 is a diagram illustrating an internal resistance threshold setting map with respect to the open circuit voltage of the power storage device in the control system of the second embodiment. Hereinafter, each step of the flowchart of FIG. 5 will be described. Steps S201 to S211 correspond to steps S101 to S111 shown in FIG. 2 except for steps S204 and S205.

  In step S204, following the acquisition of the internal resistance value in step S203, the open circuit voltage of power storage device 108 is acquired, and the process proceeds to step S205 (internal resistance threshold setting unit).

In step S205, following the acquisition of the open circuit voltage information of power storage device 108 in step S204, based on the acquired open voltage of power storage device 108 and the internal resistance threshold setting map shown in FIG. The threshold value is set, and the process proceeds to step S206 (internal resistance threshold value setting unit).
Here, as shown in FIG. 6, the internal resistance threshold value corresponding to the open circuit voltage is set to the maximum value in the case of the optimum voltage Va at which the conversion loss between the power generation device 113 and the drive device 114 is minimized, and the open circuit voltage is optimum. The value becomes smaller as the voltage Va becomes higher, or the value becomes smaller as the voltage Va becomes lower than the optimum voltage Va.
The system configuration of the second embodiment is the same as that of the first embodiment shown in FIG.

Next, the operation will be described.
The reason why the characteristic line shown in FIG. 6 is drawn in the internal resistance threshold setting map for the open circuit voltage will be described.

First, each of the power generation device 113 and the drive device 114 has an optimum voltage (related to the terminal voltage) that minimizes the conversion loss. In the power generation device 113, if the power storage device 108 is discharged, the terminal voltage falls below the open circuit voltage, and if the terminal voltage approaches the optimum voltage, the conversion loss of the power generation device 113 decreases. However, if the open circuit voltage is lower than the optimum voltage and the terminal voltage becomes lower than the open circuit voltage due to the discharge and moves away from the optimum voltage, the conversion loss of the power generator 113 increases.
Similarly, in the case of one driving device 114, if the open circuit voltage is higher than the optimum voltage and the terminal voltage becomes higher than the open circuit voltage due to charging, the conversion loss of the driving device 114 increases if the terminal voltage departs from the optimum voltage.

  From the above, the characteristic line of the internal resistance threshold setting map with respect to the open circuit voltage of the power storage device 108 has the tendency shown in FIG. 6, that is, the maximum value in the case of the optimum voltage Va at which the conversion loss between the power generation device 113 and the drive device 114 is minimum. The open circuit voltage is set to a value that decreases as it becomes higher than the optimum voltage Va, or is set to a value that becomes smaller as it becomes lower than the optimum voltage Va. More specifically, the internal resistance threshold is set to zero in a region where the open voltage is equal to or lower than the first open voltage V1 and in a region where the open voltage is equal to or higher than the second open voltage V2.

  Accordingly, when the open-circuit voltage of the power storage device 108 is the optimum voltage Va, for example, when the internal resistance threshold used in the first embodiment is used, the open-circuit voltage of the power storage device 108 is lower or higher than the optimal voltage Va. As the distance increases, the internal resistance threshold is corrected to be smaller. That is, the internal resistance threshold value is corrected so as to select the energy saving side with high accuracy corresponding to the influence of the conversion loss due to the open circuit voltage of the power storage device 108. For example, when the open circuit voltage is in a region below the first open circuit voltage V1 or in a region above the second open circuit voltage V2, energy consumption is reduced by setting the internal resistance threshold to zero and always selecting the drive device selection pattern.

As a result, by using the open circuit voltage of the power storage device 108 as an influencing element of the conversion loss, when the open circuit voltage deviates from the optimum voltage at which the respective conversion losses of the power generation device 113 and the drive device 114 are minimized, the vehicle system Improve energy efficiency.
Since other operations are the same as those of the first embodiment, description thereof is omitted.

Next, the effect will be described.
In the control system for the electric vehicle according to the second embodiment, in addition to the effects (1), (2), (4), (5), (6) of the first embodiment, the following effects can be obtained. .

  (7) The internal resistance threshold value setting unit acquires the open circuit voltage of the power storage device 108 as the influence element information of the conversion loss (step S204), and the open circuit voltage is the conversion loss between the power generation device 113 and the drive device 114. Is set to a maximum value when the optimum voltage Va is the minimum, and the internal resistance threshold is reduced as the open circuit voltage becomes higher than the optimum voltage Va or lower than the optimum voltage Va. Setting is made (step S205). For this reason, when power is consumed in starting the power generation device, the open circuit voltage of the power storage device 108 is increased or decreased from the optimum voltage at which the conversion loss between the power generation device 113 and the drive device 114 is minimized. When leaving, the energy efficiency of the vehicle system can be improved.

  The third embodiment is an example in which the rotational speed of the drive motor is used as the influence element information of the conversion loss, and the internal resistance threshold is set according to the rotational speed of the drive motor.

First, the configuration will be described.
FIG. 7 is a flowchart showing the flow of power generation mode transition control processing executed by the operation control device 115 of the third embodiment (power generation mode transition control means). FIG. 8 is a diagram illustrating an internal resistance threshold setting map with respect to the rotational speed of the drive motor in the control system of the third embodiment. Hereinafter, each step of the flowchart of FIG. 7 will be described. Steps S301 to S311 correspond to steps S101 to S111 shown in FIG. 2 except for steps S304 and S305.

  In step S304, following the acquisition of the internal resistance value in step S303, the rotational speed of the drive motor 105 is acquired, and the process proceeds to step S305 (internal resistance threshold setting unit).

In step S305, following the acquisition of the rotation speed information of the drive motor 105 in step S304, the rotation speed of the drive motor 105 is set based on the acquired rotation speed of the drive motor 105 and the internal resistance threshold value setting map shown in FIG. The corresponding internal resistance threshold value is set, and the process proceeds to step S306 (internal resistance threshold value setting unit).
Here, as shown in FIG. 8, the internal resistance threshold value corresponding to the rotational speed of the drive motor 105 is zero until the rotational speed of the drive motor 105 reaches the first rotational speed Nm1, and the first rotational speed Nm1 is set to zero. In the region that exceeds, the internal resistance threshold is set to a larger value as the rotational speed is higher.
The system configuration of the third embodiment is the same as that of the first embodiment shown in FIG.

Next, the operation will be described.
The reason why the characteristic line shown in FIG. 8 is drawn in the internal resistance threshold setting map with respect to the rotation speed of the drive motor 105 will be described.

First, there exists an optimum voltage (with respect to the terminal voltage) that minimizes the conversion loss in each of the power generation device 113 and the drive device 114. In the power generation device 113, if the power storage device 108 is discharged, the terminal voltage falls below the open circuit voltage, and if the terminal voltage approaches the optimum voltage, the conversion loss of the power generation device 113 decreases. However, if the open circuit voltage is lower than the optimum voltage and the terminal voltage becomes lower than the open circuit voltage due to the discharge and moves away from the optimum voltage, the conversion loss of the power generator 113 increases.
Similarly, in the case of one driving device 114, if the open circuit voltage is higher than the optimum voltage and the terminal voltage becomes higher than the open circuit voltage due to charging, the conversion loss of the driving device 114 increases if the terminal voltage departs from the optimum voltage.
Since the optimum voltage of the driving device 114 is higher as the rotational speed of the drive motor 105 is higher, the optimum voltage is lower than the open circuit voltage when the rotational speed of the drive motor 105 is low. In this case, as a result of the terminal voltage becoming higher than the open circuit voltage due to charging, the terminal is separated from the optimum voltage, and the conversion loss of the driving device increases.

  From the above, the characteristic line of the internal resistance threshold value setting map with respect to the rotation speed of the drive motor 105 has the tendency shown in FIG. 8, that is, the internal resistance threshold value is zero until the rotation speed of the drive motor 105 reaches the first rotation speed Nm1. In the region exceeding 1 rotation speed Nm1, the internal resistance threshold is set to a larger value as the rotation speed is higher.

  Therefore, if the internal resistance threshold value used in the first embodiment is used as the maximum value when the rotational speed of the drive motor 105 is in the maximum range, for example, as the rotational speed of the drive motor 105 moves away from the maximum rotational range toward the lower side. The internal resistance threshold is corrected to a small value. That is, the internal resistance threshold value is corrected so as to select the energy saving side with high accuracy corresponding to the influence on the conversion loss due to the rotation speed of the drive motor 105. For example, when the rotational speed of the drive motor 105 is equal to or less than the first rotational speed Nm1 and is in a region away from the optimum voltage, the internal resistance threshold value is set to zero and the energy consumption is reduced by always selecting the drive device selection pattern.

As a result, by using the rotation speed of the drive motor 105 as an influence factor of the conversion loss, when the rotation speed of the drive motor 105 changes to the low rotation side so as to be away from the maximum rotation speed range that is the optimum voltage, the vehicle The energy efficiency of the system is improved.
Since other operations are the same as those of the first embodiment, description thereof is omitted.

Next, the effect will be described.
In the control system for the electric vehicle according to the third embodiment, in addition to the effects (1), (2), (4), (5), (6) of the first embodiment, the following effects can be obtained. .

  (8) The internal resistance threshold setting unit acquires the rotation speed of the drive motor 105 as the conversion loss affecting element information (step S304), and the internal resistance increases as the rotation speed of the drive motor 105 increases. The threshold value is set to a large value (step S305). For this reason, when power is consumed in starting the power generator, the rotational speed of the drive motor 105 is on the low rotation side so as to be away from the optimum voltage at which the respective conversion losses of the power generator 113 and the drive device 114 are minimized. When changing to, energy efficiency as a vehicle system can be improved.

  The fourth embodiment is an example in which the starting power of the power generation engine is used as the influence element information of the conversion loss, and the internal resistance threshold is set according to the starting power of the power generation engine.

First, the configuration will be described.
FIG. 9 is a flowchart showing the flow of power generation mode transition control processing executed by the operation control apparatus 115 of the fourth embodiment (power generation mode transition control means). FIG. 10 is a diagram showing an internal resistance threshold setting map for the starting power of the power generation engine in the control system of the fourth embodiment. Hereinafter, each step of the flowchart of FIG. 9 will be described. Steps S401 to S411 correspond to steps S101 to S111 shown in FIG. 2 except for steps S404 and S405.

  In step S404, following the acquisition of the internal resistance value in step S403, the starting power of the power generation engine 101 is acquired, and the process proceeds to step S405 (internal resistance threshold setting unit).

In step S405, following acquisition of the starting power information of the power generation engine 101 in step S404, the starting power of the power generation engine 101 is calculated based on the acquired starting power of the power generation engine 101 and the internal resistance threshold setting map shown in FIG. The corresponding internal resistance threshold value is set, and the process proceeds to step S406 (internal resistance threshold value setting unit).
Here, as shown in FIG. 10, the internal resistance threshold corresponding to the starting power of the power generation engine 101 is set to a larger value on the side where the starting power of the power generation engine 101 is smaller, and the internal resistance threshold increases as the starting power increases. The threshold value is set so as to gradually become a small value, and the internal resistance threshold value is set to a value of zero in a region exceeding the first power A1.
Since the system configuration of the fourth embodiment is the same as that of the first embodiment shown in FIG.

Next, the operation will be described.
The reason why the characteristic line shown in FIG. 10 is drawn in the internal resistance threshold setting map for the starting power of the power generation engine 101 will be described.

First, there exists an optimum voltage (with respect to the terminal voltage) that minimizes the conversion loss in each of the power generation device 113 and the drive device 114. In the power generation device 113, if the power storage device 108 is discharged, the terminal voltage falls below the open circuit voltage, and if the terminal voltage approaches the optimum voltage, the conversion loss of the power generation device 113 decreases. However, if the open circuit voltage is lower than the optimum voltage and the terminal voltage becomes lower than the open circuit voltage due to the discharge and moves away from the optimum voltage, the conversion loss of the power generator 113 increases.
Similarly, in the case of one driving device 114, if the open circuit voltage is higher than the optimum voltage and the terminal voltage becomes higher than the open circuit voltage due to charging, the conversion loss of the driving device 114 increases if the terminal voltage departs from the optimum voltage.
When the starting power of the power generation engine 101 is large, the difference between the open circuit voltage and the terminal voltage opens even if the internal resistance is smaller than when the starting power is small. And, as the difference opens more widely, the terminal voltage approaches the optimum voltage, so that the threshold value of the internal resistance becomes smaller when the starting power is larger.

  From the above, the characteristic line of the internal resistance threshold setting map with respect to the starting power of the power generation engine 101 has the tendency shown in FIG. 10, that is, the higher the starting power of the power generation engine 101 is, the smaller the internal resistance threshold is set. Yes.

  Therefore, if the internal resistance threshold value used in the first embodiment is used as the maximum value when the starting power of the power generation engine 101 is in the minimum range, for example, as the starting power of the power generation engine 101 moves away from the minimum power range to the higher side. The internal resistance threshold is corrected to a small value. That is, the internal resistance threshold value is corrected so as to select the energy saving side with high accuracy in accordance with the influence of the starting power of the power generation engine 101 on the conversion loss. For example, when the starting power of the power generation engine 101 is equal to or higher than the first power A1 and is in a region away from the optimum voltage, the internal resistance threshold is set to zero and the energy consumption is reduced by always selecting the drive device selection pattern.

As a result, by using the starting power of the power generation engine 101 as an influence factor of the conversion loss, when the starting power of the power generation engine 101 changes to the high power side away from the minimum power range where the optimum voltage is obtained, the vehicle system As a result, energy efficiency is improved.
Since other operations are the same as those of the first embodiment, description thereof is omitted.

Next, the effect will be described.
In the control system for an electric vehicle according to the fourth embodiment, in addition to the effects (1), (2), (4), (5), (6) of the first embodiment, the following effects can be obtained. .

  (9) The internal resistance threshold value setting unit acquires the starting power of the power generation engine 101 as the influence factor information of the conversion loss, and the internal resistance threshold value is decreased as the starting power of the power generation engine 101 is higher. Set. For this reason, when power is consumed in starting the power generation device, the starting power of the power generation engine 101 is separated from the optimum voltage at which the respective conversion losses of the power generation device 113 and the drive device 114 are minimized. When changing to, energy efficiency as a vehicle system can be improved.

  As mentioned above, although the control system of the electric vehicle of this invention has been demonstrated based on Example 1- Example 4, it is not restricted to these Examples about a concrete structure, Each claim of a claim Design changes and additions are permitted without departing from the spirit of the invention according to the paragraph.

  In the first embodiment, an example in which the internal resistance threshold is given by a fixed value based on experimental data is shown. In the second embodiment, the example in which the internal resistance threshold value is given by a variable value corresponding to the open circuit voltage of the power storage device is shown. In the third embodiment, the example in which the internal resistance threshold value is given by a variable value corresponding to the rotational speed of the drive motor is shown. In the fourth embodiment, the example in which the internal resistance threshold value is given by a variable value corresponding to the starting power of the power generation engine is shown. However, all the internal resistance threshold values of Examples 1 to 4 are obtained, and among the internal resistance threshold values obtained in Examples 1 to 4, the largest internal resistance threshold value or the smallest internal resistance threshold value is selected. You can also Moreover, when using several Example simultaneously among the said Examples 1-4, it can also be used properly according to a driving | running condition. Furthermore, an example in which the coefficient of the internal resistance threshold is obtained in Examples 2 to 4 and the internal resistance threshold is determined by multiplying the coefficient of the internal resistance threshold in Example 1 by the coefficient. Further, the internal resistance threshold values obtained in each of Examples 1 to 4 can be used with priorities.

  In Examples 1-4, the example of the control system applied with respect to the series hybrid vehicle was shown, but in short, it can be applied to any electric vehicle equipped with a generator.

1 is an overall system block diagram illustrating a control system for an electric vehicle having a series hybrid configuration according to a first embodiment. 6 is a flowchart showing a flow of power generation mode transition control processing executed by the operation control apparatus 115 of the first embodiment. It is a figure which shows the relationship characteristic of the total loss difference ([Total loss at the time of independent charge / discharge]-[Total loss at the time of direct distribution]) with respect to battery internal resistance value in the control system of Example 1. FIG. It is a time chart which shows each characteristic of power generation engine torque, power generation engine rotation speed, and power generation motor power in the process in which the power generator of Example 1 changes from a non-power generation state to a power generation state. 10 is a flowchart showing a flow of power generation mode transition control processing executed by the operation control device 115 of the second embodiment. It is a figure which shows the internal resistance threshold value setting map with respect to the open circuit voltage of an electrical storage apparatus with the control system of Example 2. FIG. 12 is a flowchart showing a flow of power generation mode transition control processing executed by the operation control apparatus 115 of the third embodiment. It is a figure which shows the internal resistance threshold value setting map with respect to the rotation speed of a drive motor in the control system of Example 3. 12 is a flowchart showing a flow of power generation mode transition control processing executed by the operation control apparatus 115 of Example 4. It is a figure which shows the internal resistance threshold value setting map with respect to the starting electric power of a power generation engine with the control system of Example 4. FIG.

Explanation of symbols

101 power generation engine
102 Generator motor
103 Power generation inverter
104 drive inverter
105 Drive motor
106 differential reducer
107 Drive wheel
108 Power storage device
109 Electric auxiliary machine
110 Power storage system controller
111 Power generation system controller
112 Drive system controller
113 Power generator
114 Drive unit
115 Motion control device

Claims (9)

A power generation device having a power generation engine as a drive source of a power generation motor and having a power generation inverter, a drive motor and a drive device having a drive inverter for driving and regenerative braking, and a power storage device for storing electric power are electrically connected. An operation control device for controlling the operation of the three devices;
When the start request for the power generation device is generated, the operation control device consumes power from a power supply source to drive the power generation motor, and after the power generation engine is started, the power generated by the power generation motor is generated. In a control system for an electric vehicle having power generation mode transition control means for transition to a power generation state to be supplied,
The power generation mode transition control means acquires the internal resistance value of the power storage device by estimation or measurement, and determines the power supply source necessary for starting the power generation device based on the acquired internal resistance value of the power storage device. And a power supply device supply pattern having a power supply source necessary for starting the power generation device as the power storage device, and selecting a supply pattern with low energy consumption. system. In the control system of the electric vehicle according to claim 1,
The drive device supply pattern is a pattern that consumes electric power generated by the regenerative operation of the drive device and starts the power generation device,
The power storage device supply pattern is a pattern for starting the power generation device by consuming the stored power of the power storage device,
The power generation mode transition control means includes:
When the start request of the power generation device occurs, an internal resistance value acquisition unit that acquires the internal resistance value of the power storage device by estimation or measurement,
An internal resistance threshold value setting unit for setting an internal resistance value as a selection criterion for selecting whether to select the driving device supply pattern or the power storage device supply pattern;
An internal resistance value comparison unit that compares the internal resistance value of the power storage device with an internal resistance threshold value;
A driving device supply pattern selection unit that selects the driving device supply pattern when an internal resistance value of the power storage device is equal to or greater than an internal resistance threshold;
When the internal resistance value of the power storage device is less than an internal resistance threshold, a power storage device supply pattern selection unit that selects the power storage device supply pattern;
An electric vehicle control system comprising: In the control system of the electric vehicle according to claim 2,
The internal resistance threshold setting unit is defined as a total loss of the internal resistance loss of the power storage device, the conversion loss of the drive device, and the conversion loss of the power generation device, and the total loss when the drive device supply pattern is selected, A control system for an electric vehicle, wherein an internal resistance measurement value that matches the total loss when a power storage device supply pattern is selected is acquired, and the acquired internal resistance measurement value is set as an internal resistance threshold value. In the control system of the electric vehicle according to claim 2,
The internal resistance threshold value setting unit acquires the open circuit voltage of the power storage device as the influence element information of the conversion loss, and the open circuit voltage is an internal voltage when the conversion loss between the power generation device and the drive device is the optimum voltage. The resistance threshold is set to a maximum value, and the internal resistance threshold is set to a value that decreases as the open voltage becomes higher than the optimum voltage, or the internal resistance threshold is set to a value that decreases as the open voltage becomes lower than the optimum voltage. An electric vehicle control system. In the control system of the electric vehicle according to claim 2,
The internal resistance threshold value setting unit acquires the rotation speed of the drive motor as the influence factor information of the conversion loss, and sets the internal resistance threshold value to a larger value as the rotation speed of the drive motor is higher. A control system for an electric vehicle. In the control system of the electric vehicle according to claim 2,
The internal resistance threshold value setting unit acquires the starting power of the power generation engine as influence factor information of the conversion loss, and sets the internal resistance threshold value to a smaller value as the starting power of the power generation engine is higher. An electric vehicle control system. In the control system of the electric vehicle according to any one of claims 2 to 6,
The drive device supply pattern selection unit selects the drive device supply pattern after waiting for the power storage device to be in a charged state by a regenerative operation of the drive device when the power storage device is not in a charged state. Electric vehicle control system. In the control system of the electric vehicle according to claim 7,
The power generation mode transition control unit includes a charge amount determination unit that determines whether or not a charge amount to the power storage device exceeds a lower limit value, and when the charge amount is equal to or lower than the lower limit value, The control system for an electric vehicle is characterized by selecting a power storage device supply pattern in which the power supply source consumed by the power generation device is the power storage device in preference to the selection process. In the control system of the electric vehicle according to any one of claims 2 to 8,
The power storage device supply pattern selection unit selects the power storage device supply pattern after waiting for the power storage device to be in a non-charged state when the power storage device is in a charged state. system.

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