JP6320362B2 - AC current controller - Google Patents

Description

  The present invention relates to an alternating current control device and an alternating current control method.

  Recently, in order to be able to use electrical appliances that are used as commercial AC power while riding in a vehicle, an outlet for outputting AC to the vehicle may be provided. On the other hand, a battery or a generator that outputs a direct current is provided in the vehicle. The direct current is supplied to an electric load or used for charging a battery, and a DC / AC inverter (simply an AC inverter) is provided in the vehicle, and the AC inverter converts the direct current into an alternating current. Is output from.

  For example, Patent Document 1 discloses a power supply device for an automobile with the object of preventing the fuse from being blown against the use of an overload at a low cost because it is not necessary to secure a place for installing the battery. This automotive power supply device boosts a DC voltage from a main battery by a DC / DC converter, converts the boosted DC voltage to an AC power source by an AC inverter, and supplies the AC power to an outlet. Further, the automobile power supply device supplies a DC voltage from the main battery to the socket via the output connector via the current detection circuit. Then, when the current detection circuit detects an overcurrent in the current flowing through the DC / DC converter and the output connector, the automobile power supply device stops the operation of the DC / DC converter.

  Patent Document 2 discloses a DC-AC inverter that can handle a wide DC input voltage range without using feedback control in the DC-DC converter. This DC-AC inverter includes an insulated DC-DC converter and a DC-AC converter. The insulation type DC-DC converter has a control circuit that controls the converted voltage by adjusting the switching duty according to the input DC voltage. The DC-AC converter has a control circuit that controls the effective value of the AC voltage that is output by adjusting the switching duty in accordance with the voltage converted by the insulation type DC-DC converter. Since the DC-DC converter receives as input the voltage adjusted by the isolated DC-DC converter, it can handle a wide input voltage range without using feedback control.

Japanese Patent Laid-Open No. 09-074666 JP 2013-219982 A

When the internal combustion engine is started and the generator is operated by operating the generator while the vehicle is stopped and the AC current is supplied to the outlet, the AC current is supplied based on the result of consuming only the fuel. . On the other hand, when the alternating current is supplied to the outlet only by the electric power from the battery without operating the generator while the vehicle is stopped, the alternating current is supplied based on the electric power charged in the battery. The power charged in the battery includes power charged from a generator based on fuel consumption, regenerative power charged from the generator when the vehicle is decelerated, power charged from a commercial AC power source, and the like. For this reason, the electric power supplied from the battery while the vehicle is stopped has a smaller environmental load than the electric power obtained by starting the internal combustion engine and consuming the fuel from the generator. In the idling state where the internal combustion engine is operating and the generator is generating power, the viewpoint of reducing the load on the environment is lacking in the power supply device such as the AC inverter.
Therefore, the present invention provides an alternating current control device and an alternating current control method that reduce the load on the environment.

In order to solve the above problems, an AC inverter that converts a direct current from a power supply circuit included in a vehicle having an internal combustion engine into an alternating current, an internal combustion engine state acquisition unit that acquires an operating state of the internal combustion engine, and a traveling state of the vehicle And a control unit that controls the output of the alternating current from the AC inverter based on the operating state acquired by the internal combustion engine state acquisition unit and the driving state acquired by the driving state acquisition unit, When the operation state of the internal combustion engine acquired by the internal combustion engine state acquisition unit is stopped, or when the traveling state of the vehicle acquired by the traveling state acquisition unit is traveling, the control unit Is normally output, the operation state of the internal combustion engine acquired by the internal combustion engine state acquisition unit is operating, and the vehicle driving state acquired by the driving state acquisition unit is Limiting the output of the alternating current from the AC inverter to be less than the force, alternating current control device is provided.
According to this, in an idling state where the internal combustion engine is operating and the generator is generating power, it is possible to provide an alternating current control device that reduces the load on the environment by limiting the output of alternating current from the AC inverter.

In addition, when the control unit further restricts the output of the alternating current from the AC inverter, after the operation state of the internal combustion engine acquired by the internal combustion engine state acquisition unit is stopped Or, when the traveling state of the vehicle acquired by the traveling state acquisition unit becomes traveling, it is transmitted to the notification unit so as to perform notification indicating that the output of the alternating current from the AC inverter is not restricted. It may be a feature.
According to this, it is possible to notify the user that the state where the output of the alternating current from the AC inverter is restricted is changed to the state where it is not restricted.

Furthermore, the control unit further includes a restriction release switch operated by the user, and when the restriction release switch is operated, the operation state of the internal combustion engine acquired by the internal combustion engine state acquisition unit is in operation, and Even when the traveling state of the vehicle acquired by the traveling state acquisition unit is stopped, the output of the alternating current from the AC inverter may not be limited.
According to this, in the idling state, when the user does not intentionally limit the output of the AC current from the AC inverter, an AC current control device that does not limit can be provided.

  As described above, according to the present invention, it is possible to provide an alternating current control device and an alternating current control method that reduce the load on the environment.

The block diagram which shows the alternating current control apparatus of 1st Example which concerns on this invention. The figure which shows the electrical outlet and main switch used for the alternating current control apparatus of 1st Example which concerns on this invention. The flowchart which shows the control method in the alternating current control apparatus of 1st Example which concerns on this invention. The block diagram which shows the alternating current control apparatus of the 2nd Example which concerns on this invention. The figure which shows the restriction release switch and the notification part in the alternating current control apparatus of 2nd Example which concerns on this invention. The state transition diagram in the alternating current control apparatus of 2nd Example which concerns on this invention.

Embodiments according to the present invention will be described below with reference to the drawings.
<First Example>
With reference to FIG. 1, the alternating current control apparatus 100 in a present Example is demonstrated. An alternating current control apparatus 100 according to the present invention is provided in a vehicle 1. The vehicle 1 includes a direct current to an internal combustion engine 2 (engine) that drives the vehicle 1, a generator 6 that generates electric power using the power of the internal combustion engine 2, an ignition switch 3 that starts the vehicle 1 and the internal combustion engine, a load mounted on the vehicle 1, and the like. A battery 5 for supplying power is provided. In addition, as shown in FIG. 2, the vehicle 1 turns on and off an outlet 31 and an AC inverter, which serve as an output port of an AC inverter 10 to be described later, in order to use an electrical appliance used as a commercial AC power supply as an AC outlet 30. The main switch 32 is provided. The main switch 32 is provided in the vicinity of the outlet 31 in the AC outlet 30, and the outlet 31 can be used only when it is turned on, and is provided to the user of the outlet 31. In the present specification, the battery 5 and the generator 6 are collectively referred to as a power feeding circuit 4.

  The AC current control device 100 includes an AC inverter 10 that converts a DC current into an AC current, an internal combustion engine state acquisition unit 22 that acquires an operation state of the internal combustion engine 2, and a travel state acquisition unit 23 that acquires a travel state of the vehicle 1. And a control unit 21 that controls the output of the alternating current from the AC inverter 10 based on the operation state and the traveling state. The AC inverter 10 converts a direct current supplied from the battery 5 or a direct current generated by the generator 6 into an alternating current. The AC inverter 10 may be an AC inverter having a known configuration including a DC / DC converter and a DC / AC converter.

  The internal combustion engine state acquisition unit 22 acquires an operation state indicating whether the internal combustion engine 2 is operating or stopped from an ECU (Electronic Control Unit) that monitors the state of the internal combustion engine 2 or the like. . The traveling state acquisition unit 23 acquires the traveling state of whether the vehicle 1 is stopped / parked or traveling from an ECU or the like that monitors the traveling of the vehicle 1.

  The control unit 21 is an ECU configured by an electronic circuit such as a CPU (Central Processing Unit) and a memory. Based on the operating state acquired by the internal combustion engine state acquisition unit 22 and the traveling state acquired by the traveling state acquisition unit 23, A direct current from the power feeding circuit 4 is converted and output of an alternating current from the AC inverter 10 is controlled. With reference to FIG. 3, the control method of the output of AC power supply by the control part 21 is demonstrated. In the flowchart, S means a step. In S100, the control unit 21 checks the state of the ignition switch 3. If the ignition switch 3 is in the off state, the control unit 21 does not do anything and waits for the ignition switch 3 to be in the on state. In S102, the control unit 21 checks the state of the main switch 32. If the main switch 32 is off, the control unit 21 waits for the main switch 32 to be on.

  In S104, the control unit 21 checks whether or not the operation state of the internal combustion engine 2 acquired by the internal combustion engine state acquisition unit 22 is operating. That is, since the ignition switch 3 is on, the control unit 21 is in a state where the internal combustion engine 2 is operating and the vehicle 1 can be driven depending on the shift position, or the internal combustion engine 2 is not operating. It is inspected whether the vehicle 1 is clearly stationary. When the internal combustion engine 2 is not operating and is stopped, the control unit 21 normally outputs an alternating current from the AC inverter 10 in S110.

  When the internal combustion engine 2 is operating, the control unit 21 checks in S106 whether or not the traveling state of the vehicle 1 acquired by the traveling state acquisition unit 23 is stopped. That is, since the control unit 21 is in a state in which the internal combustion engine 2 is operating, it is in a state where the internal combustion engine 2 is operating and the vehicle 1 is actually driven to travel, or the internal combustion engine 2 is operating. It checks whether the vehicle 1 is not driven and is in an idling state. Whether the vehicle 1 is stopped is inspected based on the vehicle speed of the vehicle 1, the position of the shift position (parking), and the position of the parking brake.

  When the operation state of the internal combustion engine 2 acquired by the internal combustion engine state acquisition unit 22 is stopped, or when the traveling state of the vehicle 1 acquired by the traveling state acquisition unit 23 is traveling, the control unit 21 performs S110. 1 normally outputs an alternating current from the AC inverter 10.

  When the vehicle 1 is stopped and in the idling state, the control unit 21 limits the output of the alternating current from the AC inverter 10 so that the output is less than the normal output in S108. That is, the control unit 21 is operating when the operation state of the internal combustion engine 2 acquired by the internal combustion engine state acquisition unit 22 is operating and the traveling state of the vehicle 1 acquired by the traveling state acquisition unit 23 is stopped. The output of the alternating current from the AC inverter 10 is limited. Here, limiting the output from the AC inverter 10 means that if the AC inverter 10 normally outputs 1500 watts of power, the AC inverter 10 whose output is limited is less than 1500 watts (for example, 100 watts) or no output (zero watts). When the vehicle 1 is in an idling state, even if the internal combustion engine 2 is operating and the generator 6 is generating electric power, the output of the alternating current from the AC inverter 10 is limited, resulting in the electric power from the generator 6. Can be suppressed, and the load on the environment can be reduced.

<Second Example>
With reference to FIGS. 4-6, the alternating current control apparatus 100A in a present Example is demonstrated. The same components as those in the above embodiment are denoted by the same reference numerals, and different points from the above embodiment will be mainly described in order to avoid repeated description.

  The AC current control device 100A includes an AC inverter 10, an internal combustion engine state acquisition unit 22, a traveling state acquisition unit 23, and a control unit 21A that controls the output of alternating current from the AC inverter 10 based on the operation state and the traveling state. A notification unit 50A that notifies the user, and a restriction release switch 40A that is operated by the user.

  As illustrated in FIG. 5, the restriction release switch 40 </ b> A is provided on the dashboard 7, for example, and when the user performs an ON operation, the control unit 21 </ b> A performs the following control. That is, when the restriction release switch 40A is operated, the control unit 21A does not restrict the output of the alternating current from the AC inverter 10 even in the idling state. Therefore, the control unit 21A is a case where the operation state of the internal combustion engine 2 acquired by the internal combustion engine state acquisition unit 22 is operating and the travel state of the vehicle 1 acquired by the travel state acquisition unit 23 is stopped. Does not limit the output even if it exists. Even if the control unit 21A once restricts the output of the alternating current from the AC inverter 10, the control unit 21A restricts the output of the alternating current from the AC inverter 10 when the user turns on the restriction release switch 40A. Stop doing, that is, remove the restriction. By doing so, when the user does not limit the output of the alternating current from the AC inverter 10 in the idling state, the output can be prevented from being limited according to the intention.

  As shown in FIG. 5, the notification unit 50A is a lamp that is provided in the vicinity of the restriction release switch 40A of the dashboard 7, for example, and is turned on / off by the following control of the control unit 21A. When the control unit 21A is not in the idling state after limiting the output of the alternating current from the AC inverter 10, the control unit 21A notifies the user that the output of the alternating current from the AC inverter 10 is no longer limited. That is, the control unit 21A restricts the output of the alternating current from the AC inverter 10, and then the operation state of the internal combustion engine 2 acquired by the internal combustion engine state acquisition unit 22 is stopped, or the traveling state acquisition unit When the traveling state of the vehicle 1 acquired by the vehicle 23 is traveling, the notification is sent to the notification unit 50A so as to notify that the restriction is not performed. According to this, when the user enters a state where the output of the alternating current from the AC inverter 10 is not restricted without turning on the restriction release switch 40A, the user is notified of this. Can do.

  With reference to FIG. 6, the state transition in 100 A of alternating current control apparatuses is demonstrated. The state at the large level is due to the state of the ignition switch 3 and the main switch 32 of the vehicle 1. When both are in the off state, the AC inverter 10 is in the stopped state, and when both are in the on state, the AC inverter 10 Is the operating state. The AC inverter 10 being in an operating state means that a direct current from the power feeding circuit 4 can be output as an alternating current.

  When the AC inverter 10 is in an operating state, there are two states: a state without output restriction and a state with output restriction. The transition from the state without output restriction to the state with output restriction occurs when the internal combustion engine 2 is operating and the vehicle 1 is stopped. On the other hand, the state where the output is restricted is changed to the state where the output is not restricted when the restriction release switch 40A is turned on, when the vehicle 1 is stopped, or when the internal combustion engine 2 is stopped.

  When the user gets on and the ignition switch 3 of the vehicle 1 is turned on and the internal combustion engine 2 is operated, the engine is first in an idling state, so that the output is restricted unless the restriction release switch 40A is turned on. Further, when the vehicle is stopped by a signal or the like and is in an idling state, the output is restricted as long as the restriction release switch 40A is not turned on. Thus, by limiting the output of the alternating current from the AC inverter 10 when in the idling state, the use of the power from the generator 6 can be suppressed, and the load on the environment can be reduced. The present invention also contributes to the provisions (Articles 52 to 54) of the “Ordinance on the Environment for Ensuring the Health and Safety of the Citizens” established by the Tokyo Metropolitan Government.

  In addition, this invention is not limited to the illustrated Example, The implementation by the structure of the range which does not deviate from the content described in each item of a claim is possible. That is, although the present invention has been particularly illustrated and described with respect to particular embodiments, it should be understood that the present invention has been described in terms of quantity, quantity, and amount without departing from the scope and spirit of the present invention. In other detailed configurations, various modifications can be made by those skilled in the art.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Internal combustion engine 3 Ignition switch 4 Power feeding circuit 5 Battery 6 Generator 7 Dashboard 100 AC current control device 10 AC inverter 20 Electronic control device (ECU)
DESCRIPTION OF SYMBOLS 21 Control part 22 Internal combustion engine state acquisition part 23 Running state acquisition part 30 AC outlet 31 Outlet 32 Main switch 40 Limit release switch 50 Notification part

Claims (3)

An AC inverter that converts a direct current from a power supply circuit included in a vehicle having an internal combustion engine into an alternating current;
An internal combustion engine state acquisition unit for acquiring an operation state of the internal combustion engine;
A traveling state acquisition unit that acquires a traveling state of the vehicle;
A control unit for controlling the output of alternating current from the AC inverter based on the operating state acquired by the internal combustion engine state acquiring unit and the traveling state acquired by the traveling state acquiring unit;
With
The controller is
When the operation state of the internal combustion engine acquired by the internal combustion engine state acquisition unit is stopped, or when the traveling state of the vehicle acquired by the traveling state acquisition unit is traveling, the alternating current from the AC inverter Normal output current,
When the operation state of the internal combustion engine acquired by the internal combustion engine state acquisition unit is in operation, and the traveling state of the vehicle acquired by the traveling state acquisition unit is stopped, the output is less than the normal output. To limit the output of alternating current from the AC inverter,
AC current control device. A notification unit for notifying a user;
The control unit restricts the output of alternating current from the AC inverter, and then the operation state of the internal combustion engine acquired by the internal combustion engine state acquisition unit is stopped, or the traveling state acquisition unit When the acquired traveling state of the vehicle is traveling, the notification is transmitted to the notification unit so as to perform notification indicating that the output of the alternating current from the AC inverter is not restricted. 2. The alternating current control device according to 1. A restriction release switch that is operated by the user is further provided.
When the restriction release switch is operated, the control unit is operating in the operation state of the internal combustion engine acquired by the internal combustion engine state acquisition unit, and the vehicle acquired by the travel state acquisition unit 3. The alternating current control device according to claim 1, wherein the alternating current output from the AC inverter is not limited even when the traveling state of the vehicle is stopped. 4.

Images