JP5625939B2 - Electric car - Google Patents

Description

  The present invention relates to an electric vehicle, and more specifically, includes an electric motor for driving, an electric motor inverter for driving the electric motor, a secondary battery, a battery voltage system in which the secondary battery is connected via a relay, and an electric motor inverter. A step-up converter that is connected to the connected drive voltage system and adjusts the voltage of the drive voltage system within the range of the voltage of the battery voltage system or more and exchanges power between the battery voltage system and the drive voltage system; The present invention relates to an electric vehicle including a capacitor attached to a drive voltage system, an air conditioner that performs air conditioning in a vehicle interior, and an air conditioning inverter that is connected to a battery voltage system and drives a compressor included in the air conditioner.

  Conventionally, this type of electric vehicle is connected in parallel to a motor generator for traveling, a main battery, a converter capable of boosting power from the main battery and supplying it to the motor generator, and the converter viewed from the main battery. An air conditioner (A / C) compressor, a main relay that controls power supply and interruption from the main battery to the motor generator and the A / C compressor, and a capacitor attached to the motor generator side from the converter. When the IG key is turned off, the main relay is turned off and the drive system inverter is stopped, and the converter is controlled so that the remaining charge of the capacitor is supplied to the A / C compressor. What discharges with a C compressor is proposed (for example, patent document 1). Irradiation). In this electric vehicle, the durability of the drive system is improved by such control as compared with that in which the residual charge is discharged from the converter on the motor generator side (drive system).

JP 2003-230269 A

  In the above-described electric vehicle, when the IG key is turned off, the residual charge of the capacitor is discharged by the A / C compressor. However, when the residual charge of the capacitor is to be collected as much as possible, the temperature in the vehicle compartment is close to the set temperature. In some cases, it may be preferable to treat the capacitor by a method other than discharging the residual charge of the capacitor with an A / C compressor.

  The main purpose of the electric vehicle of the present invention is to process the electric charge of the capacitor at the time of ignition off in a more appropriate manner.

  The electric vehicle of the present invention employs the following means in order to achieve the main object described above.

The electric vehicle of the present invention is
An electric motor for driving, an inverter for electric motor that drives the electric motor, a secondary battery, a battery voltage system to which the secondary battery is connected via a relay, and a drive voltage system to which the inverter for electric motor is connected A step-up converter that is connected to adjust the voltage of the drive voltage system within a range equal to or higher than the voltage of the battery voltage system and exchanges power between the battery voltage system and the drive voltage system; and the drive voltage system In an electric vehicle comprising: a capacitor attached to an air conditioner that performs air conditioning in a vehicle interior; and an air conditioning inverter that is connected to the battery voltage system and drives a compressor included in the air conditioner.
One of a plurality of modes including a secondary battery priority mode that prioritizes charging of the secondary battery and an air conditioning priority mode that prioritizes the operation of the air conditioner as processing modes for the charge of the capacitor when the ignition is off. Processing mode setting means for setting one,
When the ignition mode is turned off and the secondary battery priority mode is set as the processing mode by the processing mode setting means, the relay is conditioned on the condition that a charging condition for charging the secondary battery is satisfied. The charge control for controlling the boost converter and the relay is performed so that the charge of the capacitor is charged to the secondary battery via the boost converter in a state where is turned on, and the air conditioner is performed after the charge control is performed The air conditioning inverter and the boost converter so that the compressor is driven using the electric charge of the capacitor via the boost converter in a state where the relay is OFF on condition that an air conditioning condition for operating the air conditioner is established Air conditioning control is performed to control the relay, and the processing mode setting means When the adjustment priority mode is set as the processing mode, the air conditioning control is executed on the condition that the air conditioning condition is satisfied, and the charging condition is satisfied after the air conditioning control is executed. Control means for executing the charging control as
It is a summary to provide.

  In the electric vehicle of the present invention, when the secondary battery priority mode that prioritizes charging of the secondary battery is set as the charge processing mode of the capacitor at the time of ignition off when the ignition is turned off, the secondary battery is Charge control for controlling the boost converter and the relay is performed so that the charge of the capacitor is charged to the secondary battery via the boost converter while the relay is on, provided that the charging condition for charging is satisfied. Air conditioning inverter and booster so that the compressor is driven using the capacitor charge through the boost converter with the relay turned off, provided that the air conditioning condition for operating the air conditioner after charging control is fulfilled Air conditioning control for controlling the converter and the relay is executed. On the other hand, when the air-conditioning priority mode that prioritizes the operation of the air-conditioning apparatus is set as the processing mode when the ignition is turned off, the air-conditioning control is executed on the condition that the air-conditioning condition is satisfied and the air-conditioning control is executed. The charging control is executed on the condition that the charging condition is satisfied later. Thereby, the electric charge of a capacitor | condenser can be used effectively in the aspect according to the processing mode. That is, the capacitor charge can be processed in a more appropriate manner. Here, the “charging condition” may be a condition in which the storage ratio of the secondary battery is less than a predetermined storage ratio and the voltage of the capacitor is higher than the voltage of the secondary battery. In addition, the “air condition” may be a condition in which an operation request for the air conditioner is made and the air conditioner using the electric charge of the capacitor can be operated.

1 is a configuration diagram showing an outline of a configuration of a hybrid vehicle 20 as an embodiment of the present invention. 1 is a configuration diagram showing an outline of a configuration of an electric system included in a hybrid vehicle 20; 7 is a flowchart showing an example of an ignition-off time processing routine executed by the hybrid electronic control unit 70 when the ignition is turned off.

  Next, the form for implementing this invention is demonstrated using an Example.

  FIG. 1 is a configuration diagram showing an outline of the configuration of a hybrid vehicle 20 as an embodiment of the present invention, and FIG. 2 is a configuration diagram showing an outline of the configuration of an electric system included in the hybrid vehicle 20. As shown in the figure, the hybrid vehicle 20 of the embodiment includes an engine 22 that uses gasoline or light oil as fuel, an engine electronic control unit (hereinafter referred to as engine ECU) 24 that controls the drive of the engine 22, and a crank of the engine 22. A planetary gear 30 in which a carrier is connected to the shaft 26 and a ring gear is connected to the drive shaft 32 connected to the drive wheels 39a and 39b via a differential gear 38, and a rotor is configured as a synchronous generator motor, for example. A motor MG1 connected to the sun gear, a motor MG2 configured as a synchronous generator motor and having a rotor connected to the drive shaft 32, inverters 41 and 42 for driving the motors MG1 and MG2, and inverters 41, 42 is controlled by switching control. A motor electronic control unit (hereinafter referred to as a motor ECU) 40 for driving and controlling the motors MG1 and MG2, a battery 50 configured as, for example, a lithium ion secondary battery, and a battery electronic control unit (hereinafter referred to as a battery control unit) that manages the battery 50 A battery line (hereinafter referred to as a battery ECU) 52, a power line (hereinafter referred to as a high voltage system power line) 54a to which inverters 41 and 42 are connected, and a power line (hereinafter referred to as a battery voltage system) to which a battery 50 is connected via a system main relay 56 And the voltage of the high voltage system power line 54a is adjusted within a range equal to or higher than the voltage of the battery voltage system power line 54b, and between the high voltage system power line 54a and the battery voltage system power line 54b. Boost converter 55 for exchanging electric power between the two and a sky for air conditioning in the passenger compartment Smoothing device connected to the device 60, the air conditioning inverter 62 connected to the battery voltage system power line 54b and driving the air conditioning compressor 61 of the air conditioning device 60, and the positive and negative buses of the high voltage system power line 54a A capacitor 57, a discharge resistor 59 for discharging the charge of the capacitor 57 connected to the positive and negative buses of the high voltage system power line 54a, and the positive and negative buses of the battery voltage system power line 54b. A smoothing capacitor 58 and a hybrid electronic control unit 70 for controlling the entire vehicle are provided.

  As shown in FIG. 2, the boost converter 55 is configured as a boost converter including two transistors T31 and T32, two diodes D31 and D32 connected in parallel to the transistors T31 and T32 in a reverse direction, and a reactor L. . The two transistors T31 and T32 are respectively connected to the positive bus of the high voltage system power line 54a and the negative bus of the high voltage system power line 54a and the battery voltage system power line 54b, and the reactor L is connected to the connection point. Has been. Further, the positive terminal and the negative terminal of the battery 50 are connected to the reactor L and the negative bus of the battery voltage system power line 54b via the system main relay 56, respectively. Therefore, by turning on / off the transistors T31 and T32, the power of the battery voltage system power line 54b is boosted and supplied to the high voltage system power line 54a, or the power of the high voltage system power line 54a is reduced to reduce the battery voltage. Or can be supplied to the system power line 54b. Hereinafter, the transistor T31 may be referred to as an upper arm and the transistor T32 may be referred to as a lower arm.

  The engine ECU 24 not only controls the drive of the engine 22, but also calculates the rotational speed of the crankshaft 26, that is, the rotational speed Ne of the engine 22 based on the crank position from the crank position sensor. Further, the motor ECU 40 not only performs switching control of the switching elements of the inverters 41 and 42 but also calculates the rotational speeds Nm1 and Nm2 of the motors MG1 and MG2 based on a signal from the rotational position detection sensor. The battery ECU 52 receives signals necessary for managing the battery 50, such as a voltage Vb between terminals from the voltage sensor 51a installed between the terminals of the battery 50, and a current sensor 51b attached to the output terminal of the battery 50. The charge / discharge current Ib, the battery temperature Tb from the temperature sensor 51c attached to the battery 50, and the like are input. The battery ECU 52 is a power storage that is a ratio of the amount of power stored in the battery 50 based on the integrated value of the charge / discharge current Ib detected by the current sensor 51b in order to manage the battery 50 to the total capacity (power storage capacity). The ratio SOC is calculated, and the input / output limits Win and Wout, which are the maximum allowable power that may charge / discharge the battery 50, are calculated based on the calculated storage ratio SOC and the battery temperature Tb.

  The hybrid electronic control unit 70 is configured as a microprocessor centered on a CPU (not shown), and includes a ROM, a RAM, an input / output port, and a communication port in addition to the CPU. In the hybrid electronic control unit 70, the voltage of the capacitor 57 (the voltage of the high voltage system power line 54 a) VH from the voltage sensor 57 a attached between the terminals of the capacitor 57 and the voltage sensor attached between the terminals of the capacitor 58. The voltage of the capacitor 58 from 58a (the voltage of the battery voltage system power line 54b) VL, the ignition signal from the ignition switch 80, the shift position SP from the shift position sensor 82 that detects the operation position of the shift lever, and the depression amount of the accelerator pedal Accelerator opening degree Acc from the accelerator pedal position sensor 84 that detects the amount of depression, brake pedal position BP from the brake pedal position sensor 86 that detects the amount of depression of the brake pedal, vehicle speed V from the vehicle speed sensor 88, ignition ignition A switch signal from the instruction switch 89 for instructing the processing mode of the charge on capacitor 57 when is input via the input port. In the embodiment, the processing mode includes a rapid discharge mode for quickly discharging, a battery priority mode that prioritizes charging of the battery 50, and an air conditioning priority mode that prioritizes the operation of the air conditioner 60 (air conditioning in the passenger compartment). When the instruction switch 89 is not operated, the battery priority mode is set as a default, and when the instruction switch 89 is operated, a mode corresponding to the operation is set. The hybrid electronic control unit 70 is provided with a switching control signal to the transistors T31 and T32 of the boost converter 55, a switching control signal to the air conditioning inverter 62, an on / off signal to the system main relay 56, and a voice in the passenger compartment. A signal to the output speaker 90 is output via an output port. The hybrid electronic control unit 70 is connected to the engine ECU 24, the motor ECU 40, and the battery ECU 52 via a communication port, and exchanges various control signals and data with the engine ECU 24, the motor ECU 40, and the battery ECU 52.

  Next, the operation of the hybrid vehicle 20 of the embodiment configured as described above, particularly the operation when the ignition is turned off will be described. FIG. 3 is a flowchart showing an example of an ignition-off time processing routine executed by the hybrid electronic control unit 70 when the ignition is turned off. In the embodiment, when the ignition is turned off and the execution of this routine is started, the system main relay 56 is not turned off, but the inverters 41 and 42, the air conditioning inverter 62, and the boost converter 55 are stopped. did.

  When the ignition-off process routine is executed, the hybrid electronic control unit 70 first selects a process mode (rapid discharge mode, battery priority mode, air conditioning priority mode) set in accordance with the operating state of the instruction switch 89. Check (step S100). When the rapid discharge mode is set as the processing mode, the system main relay 56 is turned off (step S110), and this routine is terminated. As a result, the electric charge of the capacitor 57 when the ignition is turned off is quickly discharged by the discharge resistor 59.

  When the battery priority mode is set as the processing mode, the storage ratio SOC of the battery 50 is compared with the threshold value Sref (step S120), and the voltage VH of the capacitor 57 is compared with the inter-terminal voltage Vb of the battery 50 (step S130). Thus, it is determined whether or not a charging condition for charging the battery 50 is satisfied. Here, the threshold value Sref is determined as the upper limit of the range of the storage ratio SOC that may be charged to the battery 50 after the ignition is turned off, and for example, 70% or 80% can be used. The process of step S120 is a process of determining whether or not the battery 50 may be charged, and the process of step S130 is a process of determining whether or not the charge of the capacitor 57 can be charged to the battery 50.

  When the storage ratio SOC of the battery 50 is less than the threshold value Sref and the voltage VH of the capacitor 57 is higher than the voltage Vb between the terminals of the battery 50, it is determined that the charging condition is satisfied, and the charge of the capacitor 57 is passed through the boost converter 55. Boost converter 55 is controlled so that battery 50 is charged (step S140), and the process returns to step S120. Specifically, boost converter 55 is controlled by switching control of transistors T31 and T32 so that the charge of capacitor 57 is stepped down by boost converter 55 and supplied to battery 50. In this manner, the battery 50 is charged with the electric charge of the capacitor 57 until the storage ratio SOC of the battery 50 becomes equal to or higher than the threshold value Sref or the voltage VH of the capacitor 57 becomes equal to or lower than the voltage Vb between the terminals of the battery 50. Thereby, the electric charge of the capacitor 57 can be effectively used.

  When the storage ratio SOC of the battery 50 is greater than or equal to the threshold value Sref in step S120, or when the voltage VH of the capacitor 57 is less than or equal to the voltage Vb between the terminals of the battery 50 in step S130, it is determined that the charging condition is not satisfied, and It is determined whether or not an operation request 60 is made (step S150). In this embodiment, this determination is made when the driver requests air conditioning in the vehicle interior and the temperature in the vehicle interior is different from the set temperature as the target temperature in the vehicle interior due to the operation of the air conditioner 60. It is determined that an operation request has been made, and it is determined that an operation request for the air conditioner 60 has not been made when the driver does not request air conditioning in the passenger compartment or when the temperature in the passenger compartment is equal to the set temperature. It was. When the operation request of the air conditioner 60 is not made, the system main relay 56 is turned off (step S110), this routine is ended, and the electric charge of the capacitor 57 is discharged by the discharge resistor 59.

  When an operation request for the air conditioner 60 is made, air conditioning start information (for example, “Ignition is turned off. Post air conditioning is started.”) Is displayed from the speaker 90 as information indicating the start of the operation of the air conditioner 60. A sound is output (step S160), the system main relay 56 is turned off (step S170), and it is determined whether or not the air conditioner 60 using the electric charge of the capacitor 57 can be operated (step S180). It is determined whether or not the operation request 60 continues (the temperature in the passenger compartment is different from the set temperature) (step S190), thereby determining whether or not an air conditioning condition for operating the air conditioner 60 is satisfied. judge. When the operation of the air conditioner 60 using the electric charge of the capacitor 57 is possible and the operation request of the air conditioner 60 is continued, it is determined that the air condition is satisfied, and the electric charge of the capacitor 57 is passed through the boost converter 55. The air conditioning inverter 62 and the boost converter 55 are controlled so that the compressor 61 is driven by being supplied to the compressor 61 of the air conditioner 60 (step S200), and the process returns to step S180. Here, the reason why the air conditioning start information is output as audio from the speaker 90 in step S160 is to prevent the passenger from feeling uncomfortable when operating the air conditioner 60 after the ignition is turned off. Instead of or in addition to audio output from the speaker 90, display output on a display (not shown) may be performed. Further, whether or not the operation of the air conditioner 60 using the electric charge of the capacitor 57 in step S180 is possible is determined by examining whether or not the compressor 61 is actually driven, It can be determined whether or not the voltage VH is equal to or higher than the driving voltage required for driving the compressor 61. Needless to say, the driving voltage of the compressor 61 is a voltage lower than the terminal voltage Vb of the battery 50. Further, the boost converter 55 is controlled in the same manner as when the battery 57 is charged with the electric charge of the capacitor 57. In this manner, the air conditioner 60 is operated until the operation of the air conditioner 60 using the electric charge of the capacitor 57 becomes impossible or the operation request of the air conditioner 60 is canceled. Thereby, the electric charge of the capacitor 57 can be effectively used.

  When the operation of the air conditioner 60 using the electric charge of the capacitor 57 is not possible in step S180, or when the operation request of the air conditioner 60 is not continued in step S190 (the temperature in the passenger compartment is equal to the set temperature), the air conditioning is performed. Air conditioning end information indicating the end of the operation of the device 60 (for example, “post air conditioning is ended”) is output from the speaker 90 (step S210), and this routine is ended. In this case, since the system main relay 56 is turned off in step S170, the electric charge of the capacitor 57 is discharged by the discharge resistor 59.

  When the air conditioning priority mode is set as the processing mode in step S100, it is determined whether or not an operation request for the air conditioner 60 has been made (step S220). Information is output from the speaker 90 as a sound (step S230), the system main relay 56 is turned off (step S240), and the operation of the air conditioner 60 using the electric charge of the capacitor 57 is performed in the same manner as the processing of steps S180 and S190 described above. It is determined whether it is possible (step S250), and it is determined whether the operation request | requirement of the air conditioner 60 is continuing (step S260), By this, it is determined whether the air conditioning conditions are satisfied. When the air conditioning condition is satisfied, the electric charge of the capacitor 57 is air-conditioned via the boost converter 55. Is supplied to the compressor 61 of the location 60 by controlling the air conditioning inverter 62 so that the compressor 61 is driven and the boost converter 55 (step S270), the flow returns to step S250. Thereby, the electric charge of the capacitor 57 can be effectively used.

  On the other hand, when the air conditioning conditions are not satisfied in steps 250 and S260, the air conditioning end information is output as audio from the speaker 90 (step S280), and the system main relay 56 is turned on (step S290).

  When the system main relay 56 is turned on in step S290, or when the operation request for the air conditioner 60 is not made in step S220, the storage rate SOC of the battery 50 is set to the threshold value Sref as in the processes in steps S120 and S130 described above. (Step S300) and the voltage VH of the capacitor 57 is compared with the inter-terminal voltage Vb of the battery 50 (step S310), thereby determining whether or not the charging condition is satisfied, and the charging condition is satisfied. If so, the boost converter 55 is controlled so that the electric charge of the capacitor 57 is charged to the battery 50 via the boost converter 55 (step S320), and the process returns to step S300. Thereby, the electric charge of the capacitor 57 can be effectively used.

  On the other hand, when the charging condition is not satisfied in steps S300 and S310, the system main relay 56 is turned off (step S330), this routine is terminated, and the charge of the capacitor 57 is discharged by the discharge resistor 59.

  According to the hybrid vehicle 20 of the embodiment described above, when the ignition priority is off, the battery priority mode that prioritizes charging of the battery 50 is set as the charge processing mode of the capacitor 57 at the time of ignition off. Step-up converter 55 and system main relay 56 are charged so that the charge of capacitor 57 is charged to battery 50 through step-up converter 55 while system main relay 56 is on under the condition that the charging condition for charging 50 is satisfied. The charge of the capacitor 57 is used via the boost converter 55 when the system main relay 56 is off under the condition that the air-conditioning condition for operating the air-conditioning device 60 is satisfied after the charge control is performed to control The compressor 6 of the air conditioner 60 When the air conditioning control for controlling the air conditioning inverter 62, the boost converter 55, and the system main relay 56 is executed so that the air conditioner is driven and the air conditioning priority mode that prioritizes the operation of the air conditioning device 60 is set as the processing mode, the air conditioning Since the air conditioning control is executed on the condition that the condition is satisfied and the charging control is executed on the condition that the charging condition is satisfied after that, the charge of the capacitor 57 is effectively used in a manner corresponding to the processing mode. can do. That is, the charge of the capacitor 57 can be processed in a more appropriate manner.

  In the embodiment, the hybrid vehicle 20 that travels using the power from the engine 22 and the power from the motor MG2 has been described. However, the present invention is applied to a simple electric vehicle that does not include an engine and travels using only the power from the motor. It is good also as what to do.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the embodiment, the motor MG2 corresponds to a “motor”, the inverter 42 corresponds to a “motor inverter”, the battery 50 corresponds to a “secondary battery”, the boost converter 55 corresponds to a “boost converter”, The system main relay 56 corresponds to “relay”, the capacitor 57 corresponds to “capacitor”, the air conditioner 60 corresponds to “air conditioner”, the air conditioner inverter 62 corresponds to “air conditioner inverter”, and the instruction switch A battery priority mode that prioritizes charging of the battery 50 is set as a processing mode when the 89 is not operated, and a rapid discharge mode that discharges quickly when the instruction switch 89 is operated, or a battery priority that prioritizes charging of the battery 50 Mode and air conditioning priority mode that prioritizes the operation of the air conditioner 60 (air conditioning in the passenger compartment). The hybrid electronic control unit 70 that sets the processing mode as the processing mode corresponds to “processing mode setting means”, and when the ignition is turned off, the charge of the battery 50 is given priority as the processing mode of the charge of the capacitor 57 when the ignition is turned off. When the battery priority mode is set, the charge of the capacitor 57 is charged to the battery 50 via the boost converter 55 while the system main relay 56 is on under the condition that the charging condition for charging the battery 50 is satisfied. The charge control for controlling the boost converter 55 and the system main relay 56 is executed and the air conditioner for operating the air conditioner 60 is subsequently satisfied. 57 charge boost converter Air conditioning control is performed to control the air conditioning inverter 62, the boost converter 55, and the system main relay 56 so that the compressor 61 of the air conditioning device 60 is driven using the control unit 5, and priority is given to the operation of the air conditioning device 60 as a processing mode. When the air conditioning priority mode to be set is set, the hybrid electronic control that executes the air conditioning control on the condition that the air conditioning condition is satisfied and then executes the charging control on the condition that the charging condition is satisfied The unit 70 corresponds to “control means”.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. Therefore, the elements of the invention described in the column of means for solving the problems are not limited. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

  As mentioned above, although the form for implementing this invention was demonstrated using the Example, this invention is not limited at all to such an Example, In the range which does not deviate from the summary of this invention, it is with various forms. Of course, it can be implemented.

  The present invention can be used in the manufacturing industry of electric vehicles.

  20 hybrid vehicle, 22 engine, 24 engine electronic control unit (engine ECU), 26 crankshaft, 30 planetary gear, 32 drive shaft, 38 differential gear, 39a, 39b drive wheel, 40 motor electronic control unit (motor ECU), 41, 42 Inverter, 50 Battery, 51a Voltage sensor, 51b Current sensor, 51c Temperature sensor, 52 Battery electronic control unit (battery ECU), 54 Power line, 54a High voltage system power line, 54b Battery voltage system power line, 55 Boost converter, 56 System main relay, 57, 58 Capacitor, 57a, 58a Voltage sensor, 59 Discharge resistance, 60 Air conditioner, 61 Compressor, 62 Air conditioner inverter, 70 Hybrid electronics Control unit, 80 Cooling water temperature Tw, Ignition switch, 82 Shift position sensor, 84 Accelerator pedal position sensor, 86 Brake pedal position sensor, 88 Vehicle speed sensor, 89 Indicator switch, 90 Speaker, D31, D32 Diode, L reactor, MG1, MG2 Motor, T31, T32 transistor.

Claims (1)

An electric motor for driving, an inverter for electric motor that drives the electric motor, a secondary battery, a battery voltage system to which the secondary battery is connected via a relay, and a drive voltage system to which the inverter for electric motor is connected A step-up converter that is connected to adjust the voltage of the drive voltage system within a range equal to or higher than the voltage of the battery voltage system and exchanges power between the battery voltage system and the drive voltage system; and the drive voltage system In an electric vehicle comprising: a capacitor attached to an air conditioner that performs air conditioning in a vehicle interior; and an air conditioning inverter that is connected to the battery voltage system and drives a compressor included in the air conditioner.
In accordance with a driver's instruction, the charge processing mode of the capacitor at the time of ignition off includes a secondary battery priority mode that prioritizes charging of the secondary battery and an air conditioning priority mode that prioritizes the operation of the air conditioner Processing mode setting means for setting one of a plurality of modes;
When the ignition mode is turned off and the secondary battery priority mode is set as the processing mode by the processing mode setting means, the relay is conditioned on the condition that a charging condition for charging the secondary battery is satisfied. The charge control for controlling the boost converter and the relay is performed so that the charge of the capacitor is charged to the secondary battery via the boost converter in a state where is turned on, and the air conditioner is performed after the charge control is performed The air conditioning inverter and the boost converter so that the compressor is driven using the electric charge of the capacitor via the boost converter in a state where the relay is OFF on condition that an air conditioning condition for operating the air conditioner is established Air conditioning control is performed to control the relay, and the processing mode setting means When the adjustment priority mode is set as the processing mode, the air conditioning control is executed on the condition that the air conditioning condition is satisfied, and the charging condition is satisfied after the air conditioning control is executed. Control means for executing the charging control as
Electric car with

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