JP6033637B2 - Detachable hybrid system and detachable generator - Google Patents

Description

  The present invention relates to a detachable hybrid system and a detachable generator that are used in an agricultural machine, a lawn mower, a construction machine, and the like that are operated by electric power, and are used when the capacity of a storage battery is exhausted.

  Recently, as shown in Patent Document 1 and the like, an electric vehicle in which a storage battery serving as a power supply unit is mounted on a vehicle and driven only by electric power supplied from a power source using a motor as a driving source is being put into practical use.

  However, in the fields of agricultural machinery, lawn mowers, construction machinery, etc., Patent Document 2 proposes an agricultural machine that is driven by using a storage battery and a motor, but most of the vehicles and hybrid vehicles that use electricity as a power source are put into practical use. Was not.

JP 2009-087671 A JP 2003-009607 A

  However, with the advancement of vehicle electrification in the future, the introduction of electric vehicle systems (hereinafter referred to as EV systems) that operate on electric power is also expected for agricultural machinery and the like. In the EV system, the system itself is fixed, and the EV system cannot be easily changed to a hybrid system. In the EV system, when the capacity of the storage battery runs out, it cannot be operated unless it is charged again. However, since the charging facilities are not everywhere, there is a problem that the vehicle cannot be moved when the capacity of the storage battery is lost in an environment where charging is difficult.

  The present invention has been made paying attention to such problems, and in particular, provides an attachable / detachable hybrid system for charging and operating anytime without relying on a charging facility in an agricultural machine, a mower, a construction machine, or the like. The purpose is to do.

In order to solve this problem, the detachable hybrid system of the present invention is driven by a storage battery, a vehicle-side inverter that converts a DC voltage of the storage battery into an AC voltage, and an AC voltage supplied from the vehicle-side inverter. a motor, an electric vehicle system comprising a first connector connected to the supply line connectors and a direct current voltage of the battery for inputting a DC voltage supplied from outside to the vehicle side inverter, the and a to the electric vehicle system is detachably connected generator, wherein the generator, the engine and a motor generator connected to the rotary shaft of the engine, the three-phase AC output from the motor generator DC voltage converted to a first inverter for supplying the converted output to the first connector, and the output of the first inverter DC Those comprising a controller for controlling the pressure, the.

Here, the generator is a connector for outputting a DC voltage output from the first inverter to the outside, and a second connector detachably connected to the first connector, and the first connector A connector for outputting a DC voltage output from the inverter to the outside, and a third connector different from the second connector may be provided .

The generator includes a second inverter that converts a DC voltage from the first inverter into a desired AC voltage, and a second inverter that outputs the AC voltage output from the second inverter to the outside. You may make it further comprise 4 connectors .

  Here, the detachable hybrid system may further include an authentication system that controls operation by authentication.

In order to solve this problem, a generator according to the present invention includes a storage battery, a vehicle-side inverter that converts a DC voltage of the storage battery into an AC voltage, and a motor that is driven by the AC voltage supplied from the vehicle-side inverter. A connector for inputting a DC voltage supplied from the outside, and detachably connected to an electric vehicle system comprising a first connector connected to a line for supplying the DC voltage of the storage battery to the vehicle-side inverter The generator is an engine, a motor generator connected to a rotating shaft of the engine, a three-phase AC output from the motor generator is converted into a DC voltage, and the converted output is A first inverter supplied to the first connector, a signal input unit for inputting a signal from a control signal line of the electric vehicle system, and an external output The operation unit for inputting the type of voltage and power source to be operated, and the voltage and capacity of the storage battery of the electric vehicle system obtained from the signal input unit or operation unit or the type of voltage or power source obtained from the operation unit A controller for controlling the DC voltage output from the inverter, and a connector for outputting the DC voltage output from the first inverter to the outside, the second connector being detachably connected to the first connector; A connector for outputting a DC voltage output from the first inverter to the outside, a third connector different from the second connector, and a DC voltage from the first inverter as a desired AC which includes a second inverter for converting a voltage, and a fourth connector for outputting an AC voltage outputted from the second inverter to the outside A.

  According to the present invention having such a feature, the EV system can be operated even when the capacity of the storage battery of the EV system is lost by connecting the detachable generator to the EV system. For this reason, it can be usefully used as an emergency power generation system.

Further, it is possible to generated electric charges in accordance with the battery capacity and voltage by connecting a worn removal generator to the EV system, it is possible to use as a hybrid system when connected.

Further, by using two inverters, a DC voltage and single-phase and three-phase AC voltages can be supplied from the generator to the outside.

Further, by providing a transponder on the EV system side, the detachable generator can be operated only when the ID codes match, and theft can be prevented.

Moreover, it can be used as a generator alone and can output a necessary DC voltage to the outside based on an input from the operation unit. Moreover, the effect that a desired alternating voltage can be output outside is acquired.

FIG. 1 is a block diagram showing the overall configuration of a detachable hybrid system according to a first embodiment of the present invention. FIG. 2 is a schematic diagram showing the overall configuration of the vehicle used in the present embodiment. FIG. 3 is a schematic view showing a connector portion of this embodiment. FIG. 4 is a block diagram showing the overall configuration of a detachable hybrid system according to the second embodiment of the present invention.

  FIG. 1 is a block diagram showing the overall configuration of a detachable hybrid system 1 in which a detachable generator is connected to an EV system according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing the overall configuration of the vehicle. In FIG. 1, a detachable power generation system 20 is detachably connected to an in-vehicle EV system 10.

First, the in-vehicle EV system 10 will be described. The storage battery 11 is a vehicle power source E
This is a storage battery of the V system 10. An inverter (INV) 13 is connected to the output side of the storage battery 11 via a switch 12, and a drive motor (M) 14 is connected to the inverter 13. The inverter 13 converts the DC voltage of the storage battery 11 into a three-phase AC voltage by switching and supplies it to the drive motor 14. The rotational force of the drive motor 14 is transmitted to the vehicle drive mechanism via a transmission (not shown). The in-vehicle EV system 10 includes a CAN standard communication line 15 that transmits a control signal in a vehicle generally used in an automobile, an agricultural machine, a mower, or the like. The CAN standard communication line 15 is a two-wire system, and the line is connected to the connector 16. In this embodiment, the positive and negative lines at the connection point between the switch 12 and the inverter 13 are also connected to the connector 16. The connector 16 and the corresponding connector 21 on the power generation system 20 side are assumed to be a four-terminal type connector as shown in FIG.

  Now, as shown in FIG. 2, the detachable generator 20 is one in which all the components are incorporated in one housing. An engine 22 is provided inside the generator 20 as shown in FIG. The power of the engine 22 is supplied to a motor generator (MG) 23 to drive the motor generator 23 to rotate. The crankshaft of the engine 22 may be directly connected to the motor generator 23 or may be connected via a connecting jig such as a belt. The motor generator 23 generates a three-phase alternating current, and its output is connected to the inverter 24. The inverter 24 switches and smoothes the three-phase AC output from the motor generator 23 to convert it into a DC voltage. The output from the inverter 24 is connected to a second inverter 25 and a connector 26. The inverter 25 converts a DC voltage into a three-phase and a single-phase AC voltage, and its output ends are connected to connectors 27 and 28, respectively. The connector 26 is a connector for outputting a DC voltage to the outside, and is a connector for outputting a three-phase alternating current or a single-phase alternating current via the connectors 27 and 28. The DC output generated by the inverter 24 can be supplied to the EV system 10 via the above-described detachable connectors 21 and 16. The connector 21 constitutes a signal input means for inputting a vehicle control signal to the generator 20.

  Furthermore, a controller 29 is connected to the generator 20 for receiving a CAN signal from the connector 21 and controlling the inverters 24 and 25 based on the signal. The controller 29 obtains battery capacity information and accelerator output information from the outside through a CAN standard line, and controls the start and stop of the engine 22 based on this information, and controls the voltage value of the DC voltage that is the output of the inverter 24. To do. The controller 29 can easily control the voltage value of the DC voltage by changing the level and phase of the current Iq when the motor current is expressed on the dq axis. An operation unit 30 is connected to the controller 29. The operation unit 30 sets the voltage, the type of power source such as DC / AC, the frequency, and the voltage level required when the generator 20 is used alone. Based on this signal, the controller 29 controls the start and stop of the engine 22 and can control the inverters 24 and 25 to output a desired type of electric power.

  Next, the operation of the detachable hybrid system according to this embodiment will be described. Normally, the detachable generator 20 may be connected to the vehicle body side shown in FIG. 2, or may be operated as a single unit only by the vehicle body without being connected. When used alone, the switch 12 is closed and the motor 14 is driven from the storage battery 11 of the EV system 10 via the inverter 13 so that the EV system such as an agricultural machine can be used as it is.

When an agricultural machine or the like is used without using a detachable generator as described above, if any failure or storage battery capacity is lost, the detachable generator 20 is mounted on the vehicle body and attached to the connector 21. The connector 16 is connected. In this way, the signal of the CAN standard communication line 15 on the vehicle body side is applied to the controller 29 of the generator 20 via the connectors 16 and 21. Therefore, the controller 29 can obtain information about the voltage of the storage battery 11. At this time, the engine 22 is operated and the motor generator 23 is rotated. Output command information from the accelerator on the EV system 10 side is also applied to the controller 29 through the CAN signal system. Thus, the controller 29 can control the level of the DC voltage output from the inverter 24, and can generate a DC voltage corresponding to the voltage of the storage battery 11 from the inverter 24. This voltage is transmitted to the EV system 10 side via the connectors 21 and 16. At this time, if the switch 12 is turned off, a DC voltage is supplied to the inverter 13 so that the motor 14 of the vehicle can be rotated. If the output on the generator 20 side is not sufficient, the switch 12 is turned on to temporarily supply power to the storage battery 11, and after the storage battery 11 is sufficiently charged, the motor 14 of the vehicle is rotated by the storage battery 11. . When such use is premised, the capacity of the engine 22, the generator motor 23, the inverter 24, and the like of the generator 20 can be reduced, and the whole can be downsized. On the other hand, if the output on the generator 20 side is sufficient, the switch 12 can be turned on to directly rotate the motor 14 to charge the storage battery 11.

  In this way, the detachable generator 20 can be used to move the vehicle drive motor 14 and return to the service station. Therefore, the vehicle can be driven without being aware of the presence or absence of the charging facility. Further, when the motor 14 can be driven only by the amount of power generated by the detachable generator 20, it is not necessary to charge the storage battery 11, and the motor can be driven and driven by the output of the generator as it is. When it is not possible to travel sufficiently with only the amount of power generated by the generator, the storage battery 11 is charged once, and when necessary charging is completed, the motor 14 can be driven by the output from the storage battery to drive the vehicle. Therefore, in this invention, it can respond also when the capacity | capacitance of a storage battery runs out without relying on charging equipment.

  In the embodiment described above, the switch 12 is provided, but the storage battery 11 and the inverter 13 may be directly connected without providing such a switch. If the engine of the generator 20 is automatically activated and charged based on the CAN signal, a function equivalent to that of the hybrid system can be realized for the EV system of the vehicle.

  Next, a second embodiment of the removable hybrid system of the present invention will be described with reference to FIG. In this embodiment, a safety system is improved by adding a recognition system to the generator 20, and the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. In this embodiment, a connector 18 having a transponder 17 in which ID code data is embedded is used instead of the connector 16 as shown in FIG. An antenna 41 is provided around the connector 21 in order to receive the transponder 17 ID code. Further, an amplifying unit 42 for outputting the output from the antenna 41 to the controller 40 is provided. In this way, when the connector 21 is connected to the connector 18, the output of the transponder 17 is applied to the controller 40 via the antenna 41 and the amplifying unit 42. The controller 40 holds an ID code corresponding to the transponder 17 inside. Then, when the connector 21 is connected to the connector 18, the ID code from the transponder 17 is read out, and it is determined whether or not it matches the ID code on the detachable generator 20 side. Only when they match, the engine 22 is started and the same control as in the first embodiment is performed, and when they do not match, the engine 22 is not started. In this way, even if the generator 20 is stolen and used in another vehicle, the ID code does not match, so the EV system of the vehicle cannot be moved, and theft can be prevented beforehand.

  Without providing a transponder in the connector 18, it may be possible to operate by providing a transponder in another key in the same manner as in the vehicle antitheft device.

Further, the second inverter 25 is used to supply three-phase AC power or single-phase AC power to the outside when the detachable generator is used as a generator alone without being attached to an agricultural machine or the like. is there. Therefore, when used only as a detachable hybrid system, the inverter 25 may be omitted. Even when the detachable generator is used as a single unit, the inverter 25 can be omitted if only a DC voltage is required.

  In this embodiment, the output of the CAN communication line 15 is output to the generator via the connector. However, a signal may be transmitted to the generator using a wireless interface. In this case as well, the DC line needs to be connected via a connector.

  In this embodiment, a CAN standard communication line on the vehicle side is connected via a connector or an interface, and a control signal is transmitted to the generator side. Needless to say, it may be transmitted to the machine side.

  Since the EV system can be operated even when the capacity of the storage battery is lost in the EV system or the like, it can be suitably used as an emergency power source for the EV system.

DESCRIPTION OF SYMBOLS 10 EV system 11 Storage battery 13, 24, 25 Inverter 14 Motor 15 CAN communication line 16, 18, 21, 26, 27, 28 Connector 17 Transponder 20 Generator 22 Engine 23 Motor generator 29, 40 Controller 41 Antenna 42 Amplifier part

Claims (5)

A storage battery, a vehicle-side inverter that converts a DC voltage of the storage battery into an AC voltage, a motor driven by an AC voltage supplied from the vehicle-side inverter, and a connector for inputting a DC voltage supplied from the outside An electric vehicle system comprising: a first connector connected to a line for supplying a DC voltage of the storage battery to the vehicle-side inverter;
A generator detachably connected to the electric vehicle system;
The generator is
Engine,
A motor generator connected to the rotating shaft of the engine;
A first inverter that converts a three-phase AC output from the motor generator into a DC voltage and supplies the converted output to the first connector;
A detachable hybrid system comprising: a controller that controls a DC voltage output from the first inverter. The generator is
A second connector connected to the first connector so as to be detachable, which is a connector for outputting a DC voltage output from the first inverter to the outside;
The detachable hybrid system according to claim 1 , further comprising: a third connector that is a connector for outputting a DC voltage output from the first inverter to the outside, and is different from the second connector.   The generator includes a second inverter that converts a DC voltage from the first inverter into a desired AC voltage, and a fourth connector that outputs the AC voltage output from the second inverter to the outside. The detachable hybrid system according to claim 1, further comprising:   The detachable hybrid system according to any one of claims 1 to 3, further comprising an authentication system that controls operation by authentication. A storage battery, a vehicle-side inverter that converts a DC voltage of the storage battery into an AC voltage, a motor driven by an AC voltage supplied from the vehicle-side inverter, and a connector for inputting a DC voltage supplied from the outside A generator connected detachably to an electric vehicle system comprising a first connector connected to a line for supplying a DC voltage of the storage battery to the vehicle-side inverter;
The generator is
Engine,
A motor generator connected to the rotating shaft of the engine;
A first inverter that converts a three-phase AC output from the motor generator into a DC voltage and supplies the converted output to the first connector;
A signal input unit for inputting a signal from a control signal line of the electric vehicle system;
An operation unit that inputs the type of voltage and power to be output to the outside,
A controller for controlling the DC voltage output from the first inverter based on the voltage and capacity of the storage battery of the electric vehicle system obtained from the signal input unit or the operation unit or the type of voltage or power source obtained from the operation unit;
A second connector connected to the first connector so as to be detachable, which is a connector for outputting a DC voltage output from the first inverter to the outside;
A third connector for outputting a DC voltage output from the first inverter to the outside, wherein the third connector is different from the second connector;
A second inverter that converts a DC voltage from the first inverter into a desired AC voltage;
And a fourth connector for outputting an AC voltage output from the second inverter to the outside .

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