WO2015092886A1

WO2015092886A1 - Internal combustion engine control circuit and internal combustion engine control method

Info

Publication number: WO2015092886A1
Application number: PCT/JP2013/083938
Authority: WO
Inventors: 章広岡本; 達也新井
Original assignee: 新電元工業株式会社
Priority date: 2013-12-18
Filing date: 2013-12-18
Publication date: 2015-06-25
Also published as: JPWO2015092886A1; CN104884784B; JP5933729B2; CN104884784A

Abstract

When a main switch (70) is in an off state, a control unit (50) connects one end of a capacitor (C) to a first switch (10) by means of a second switch (15) and disconnects one end of a battery (B) and the second switch (15) from each other by means of the first switch (10). When a starter motor (46) is to be activated by bringing the main switch (70) into an on state, the one end of the capacitor (C) is connected to the first switch (10) by the second switch (15), and the one end of the battery (B) is connected to the second switch (15) by the first switch (10), thereby connecting the battery (B) to the capacitor (C) in series. Once the internal combustion engine (60) has started up, the one end of the capacitor (C) is connected to the first switch (10) by the second switch (15), and the one end of the battery (B) and the second switch (15) are disconnected from each other by the first switch (10).

Description

Internal combustion engine control circuit and internal combustion engine control method

The present invention relates to an internal combustion engine control circuit for controlling an internal combustion engine such as an engine, and an internal combustion engine control method using the internal combustion engine control circuit.

As a conventional internal combustion engine control circuit, the one shown in FIG. 8 can be cited. As shown in FIG. 8, the internal combustion engine control circuit connected to the battery B includes a load control circuit 130 that controls a load 131, a rectifier circuit 140 that generates a rectified current from the current generated by the generator 141, a cell motor A drive circuit 145 for driving 146, and a control unit 150 connected to and controlling these load control circuit 130, rectifier circuit 140 and drive circuit 145. In the embodiment shown in FIG. 8, a main switch 170 and a fuse 175 are connected between the battery B and the internal combustion engine control circuit. More specifically, battery B and second terminal 175b of fuse 175 are connected, first terminal 175a of fuse 175 and second terminal 170b of main switch 170 are connected, and first terminal 170a of main switch 170 and the internal combustion engine are connected. An engine control circuit is connected.

Japanese Patent Laid-Open No. 2005-188444 discloses that in a starting power supply device, a battery and a power storage unit are electrically connected in series, and the battery, the power storage unit, and a starter are electrically connected via a starter switch. Is disclosed. In Japanese Patent Laid-Open No. 2005-188444, the battery and the power storage unit are electrically connected in series, whereby the capacity of the power storage unit as an auxiliary power source of the battery can be reduced, and the power storage unit can be reduced in size and weight. Costs can be reduced. Further, this Japanese Patent Application Laid-Open No. 2005-188444 also discloses that the battery and the power storage unit are always connected in series, and the connection is not released or switched to the parallel connection, so that reliability is improved and costs are reduced. Has been.

However, as disclosed in Japanese Patent Application Laid-Open No. 2005-188444, if a power storage unit such as a capacitor is always connected, a so-called dark current flows between the battery and the power storage unit and accumulates in the battery. Each of the electric power stored and the electric power stored in the power storage unit is reduced.

In view of such a point, the present invention prevents an electric power stored in a battery and a capacitor from being reduced by a dark current, and makes it possible to make the device configuration compact and an internal combustion engine An object is to provide a control method.

An internal combustion engine control circuit according to the present invention includes:
An internal combustion engine control circuit for controlling an internal combustion engine,
A main switch connected between a cell motor and a generator and a battery and a capacitor; a first switch connected between the main switch and one end of the battery; and a first switch and one end of the capacitor A control unit for controlling each of the second switches connected between the two;
The other end of the capacitor is connected between the first switch and the main switch;
The first switch switches between a state of connecting the battery and the main switch and a state of connecting the one end of the battery and the second switch,
The second switch switches between a state of connecting the one end of the capacitor and the first switch and a state of disconnecting the one end of the capacitor and the first switch,
The control unit is
When the main switch is in an OFF state, the one end of the capacitor and the first switch are connected by the second switch, and the one end of the battery and the second switch are disconnected by the first switch. ,
When the main motor is turned on to start the cell motor, the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery to the first switch. By connecting two switches, the battery and the capacitor are connected in series,
After the internal combustion engine is started, the one end of the capacitor and the first switch are connected by the second switch, and the one end of the battery and the second switch are disconnected by the first switch. .

In the internal combustion engine control circuit according to the present invention,
The other end of the battery is grounded;
The second switch may ground the one end of the capacitor when disconnecting the one end of the capacitor and the first switch.

An internal combustion engine control circuit according to the present invention includes:
A voltage detection circuit for detecting a voltage generated by the generator;
When the main switch is in the ON state and the voltage generated by the generator is equal to or higher than the voltage when the battery is fully charged, the control unit causes the second switch to connect the one end of the capacitor. The battery and the capacitor may be connected in parallel by grounding and connecting the one end of the battery and the main switch by the first switch.

In the internal combustion engine control circuit according to the present invention,
When the main switch is in an ON state and the voltage generated by the generator is equal to or higher than the voltage at the time of full charge of the battery for a predetermined time, the control unit is controlled by the second switch. The battery and the capacitor may be connected in parallel by grounding the one end of the capacitor and connecting the one end of the battery and the main switch by the first switch.

An internal combustion engine control circuit according to the present invention includes:
A rotation speed detection circuit for detecting the rotation speed of the internal combustion engine;
When the main switch is in an ON state and the rotational speed of the internal combustion engine is equal to or higher than a threshold rotational speed, the control unit grounds the one end of the capacitor by the second switch, and The battery and the capacitor may be connected in parallel by connecting the one end of the battery and the main switch with a first switch.

In the internal combustion engine control circuit according to the present invention,
When the main switch is in an ON state and the rotational speed of the internal combustion engine becomes equal to or higher than a threshold rotational speed for a predetermined time, the control unit causes the second switch to connect the one end of the capacitor. The battery and the capacitor may be connected in parallel by grounding and connecting the one end of the battery and the main switch by the first switch.

An internal combustion engine control circuit according to the present invention includes:
At least the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery and the second switch to the other end of the battery. A voltage detection circuit for detecting a voltage between the other end of the capacitor;
When the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery and the second switch, the voltage detection circuit As a result of detecting the voltage between the other end of the battery and the other end of the capacitor, when the voltage is less than the startable voltage required to start the internal combustion engine, the second switch The one end and the first switch may be connected, and the one end of the battery and the second switch may be blocked by the first switch.

In the internal combustion engine control circuit according to the present invention,
When the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery and the second switch, the voltage detection circuit As a result of detecting the voltage between the other end of the battery and the other end of the capacitor, if the voltage is less than the startable voltage required to start the internal combustion engine, the control unit You may output the instruction | command which prompts charging with an external power supply to an alerting | reporting part.

In the internal combustion engine control circuit according to the present invention,
An external drive unit is connected to the internal combustion engine, and the internal drive engine can be started by driving the external drive unit.
When the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery and the second switch, the voltage detection circuit As a result of detecting the voltage between the other end of the battery and the other end of the capacitor, when the voltage is less than the startable voltage required to start the internal combustion engine, the control unit is A command that prompts the internal combustion engine to start by driving the unit may be output to the notification unit.

In the internal combustion engine control circuit according to the present invention,
An external drive unit may be connected to the internal combustion engine, and the internal combustion engine may be started by driving the external drive unit.

In the internal combustion engine control circuit according to the present invention,
The external driving unit may be a kick.

An internal combustion engine control method according to the present invention includes:
An internal combustion engine control circuit for controlling an internal combustion engine, a main switch connected between a cell motor and a generator, a battery and a capacitor, a first switch connected between the main switch and one end of the battery, And an internal combustion engine control method using an internal combustion engine control circuit including a control unit that controls each of the second switches connected between the first switch and one end of the capacitor,
The other end of the capacitor is connected between the first switch and the main switch,
The first switch switches between a state of connecting the battery and the main switch and a state of connecting the one end of the battery and the second switch,
The second switch is configured to switch between a state of connecting the one end of the capacitor and the first switch and a state of disconnecting the one end of the capacitor and the first switch,
When the main switch is in an OFF state, the second switch connects the one end of the capacitor and the first switch, and the first switch disconnects the one end of the battery and the second switch. And
When the cell motor is started with the main switch turned on, the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery to the first switch. By connecting a second switch, the battery and the capacitor are connected in series,
After the internal combustion engine is started, the one end of the capacitor and the first switch are connected by the second switch, and the one end of the battery and the second switch are disconnected by the first switch. .

According to the present invention, when the main switch is in the OFF state, the second switch connects the one end of the capacitor and the first switch, and the first switch disconnects the one end of the battery and the second switch. Then, one end of the capacitor and one end of the battery are shut off. This prevents dark current from flowing between the battery and the capacitor when the main switch is in the OFF state, and reduces the power stored in the battery and the power stored in the capacitor. This can be prevented.

According to the present invention, when the cell motor is started with the main switch turned on, the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery to the first switch. The battery and the capacitor are connected in series by connecting the two switches. For this reason, the electric current which flows when starting a cell motor can be reduced.

According to the present invention, after the internal combustion engine is started, one end of the capacitor and the first switch are connected by the second switch, and the one end of the battery and the second switch are disconnected by the first switch. Thus, one end of the capacitor and one end of the battery are shut off. For this reason, it is possible to prevent the capacitor from being charged before the power generated by the generator is stabilized. As a result, the capacitor is not charged even though the power generated by the generator is not stable. As a result, it is possible to prevent the electric power supplied to the internal combustion engine control circuit from being lowered and becoming unstable.

FIG. 1 is a schematic configuration diagram showing an aspect when a main switch is in an OFF state in the internal combustion engine control circuit according to the first embodiment of the present invention. FIG. 2 is a schematic configuration diagram showing an aspect when the main switch is turned on from the state of FIG. FIG. 3 is a schematic configuration diagram showing an aspect when the internal combustion engine is started by starting the cell motor in the internal combustion engine control circuit according to the first embodiment of the present invention. FIG. 4 is a schematic configuration diagram showing an aspect after the internal combustion engine is started in the internal combustion engine control circuit according to the first embodiment of the present invention. FIG. 5 is a schematic configuration diagram showing an aspect different from FIG. 4 after the internal combustion engine is started in the internal combustion engine control circuit according to the first embodiment of the present invention. FIG. 6 is a schematic configuration diagram showing an aspect when the capacitor of the internal combustion engine control circuit according to the first embodiment of the present invention is charged by an external power source. FIG. 7 is a schematic configuration diagram showing an aspect corresponding to FIG. 5 in the internal combustion engine control circuit according to the second embodiment of the present invention. FIG. 8 is a schematic configuration diagram of a conventional internal combustion engine control circuit.

First Embodiment << Configuration >>
Hereinafter, a first embodiment of an internal combustion engine control circuit according to the present invention will be described with reference to the drawings. Here, FIG. 1 to FIG. 6 are diagrams for explaining an embodiment of the present invention.

The internal combustion engine control circuit 100 of the present embodiment is a circuit for controlling an internal combustion engine 60 such as an engine, for example, and is a circuit for controlling an engine of a motorcycle. As will be described later, the internal combustion engine 60 of the present embodiment can be started by driving an external drive unit 65 such as a kick. Further, when the internal combustion engine 60 is started, the internal combustion engine 60 may be started by, for example, pushing the motorcycle vigorously without using such an external drive unit 65 (using so-called “push”). Can also). As shown in FIG. 1, the internal combustion engine control circuit 100 according to the present embodiment includes a capacitor C that can store electric power, a battery B that can store electric power, a generator 41 that can generate electric power, and an internal combustion engine 60. A cell motor 46 to be started, a load 31 such as a lamp, and a notification unit 80 such as an indicator are connected. The electric power generated by the generator 41 can charge the capacitor C and the battery B. On the other hand, the electric power charged in the capacitor C and the battery B can be supplied to the internal combustion engine control circuit 100, the load 31, the cell motor 46, the notification unit 80, and the like via a main switch 70 and a fuse 75 described later.

The internal combustion engine control circuit 100 detects the voltage generated by the generator 41, the voltage of the battery B, the voltage when the battery B and the capacitor C are connected in parallel, and the voltage when the battery B and the capacitor C are connected in series. Based on the voltage detection circuit 20 and the voltage detected by the voltage detection circuit 20, the supply of the electric power generated by the generator 41 to the capacitor C and the battery B is controlled, and the cell motor 46, from the capacitor C and the battery B, And a control unit 50 such as an ECU that controls supply of electric power to the load 31, the notification unit 80, and the like. A capacitor C and a battery B are connected to the voltage detection circuit 20 and the control unit 50, and power can be supplied from the capacitor C and / or the battery B to the voltage detection circuit 20 and the control unit 50. It has become.

In the present embodiment, a main switch 70 and a fuse 75 are connected between the capacitor C and the internal combustion engine control circuit 100. More specifically, the second terminal Cb of the capacitor C (the other end of the capacitor C) and the second terminal 75b of the fuse 75 are connected, and the first terminal 75a of the fuse 75 and the second terminal 70b of the main switch 70 are connected. The first terminal 70a of the main switch 70 and the internal combustion engine control circuit 100 are connected.

As shown in FIG. 1, the main switch 70 is connected between the cell motor 46 and the generator 41, the battery B, and the capacitor C. More specifically, the first terminal 70 a of the main switch 70 is connected to the internal combustion engine control circuit 100, and the internal combustion engine control circuit 100 is connected to the cell motor 46 and the generator 41. On the other hand, the second terminal 70b of the main switch 70 is connected to the second terminal Cb of the capacitor C via the fuse 75, and the first terminal Ba (the battery B of the battery B) is connected via the first switch 10 described later. One end).

As shown in FIG. 1, the first switch 10 is connected between the second terminal 70 b of the main switch 70 and the first terminal Ba of the battery B, and the first terminal Ca (capacitor C) of the first switch 10 and the capacitor C. The second switch 15 is connected to one end of the second switch 15. Further, as described above, the second terminal Cb of the capacitor C is connected between the first switch 10 and the main switch 70, and more specifically, the first switch 10 and the second terminal 75 b of the fuse 75. Connected between. The second terminal Bb of the battery B (the other end of the battery B) is grounded.

The first switch 10 switches between a state in which the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 are connected and a state in which the first terminal Ba of the battery B and the second switch 15 are connected. The second switch 15 switches between a state in which the first terminal Ca of the capacitor C and the first switch 10 are connected and a state in which the first terminal Ca of the capacitor C and the first switch 10 are disconnected. In the present embodiment, the first terminal Ca of the capacitor C is grounded when the first terminal Ca of the capacitor C and the first switch 10 are thus cut off (see FIG. 5).

As shown in FIG. 1, a load control circuit 30 that controls the load 31 is connected to the load 31. Further, a control unit 50 is connected to the load control circuit 30, and the load control circuit 30 is controlled when the control unit 50 sends an operation command. Further, the load control circuit 30 is connected to the capacitor C and the battery B, and can be driven by the electric power charged in the capacitor C and / or the battery B.

A rectifier circuit 40 that generates a rectified current from the current generated by the generator 41 is connected to the generator 41. The rectifier circuit 40 is connected to the capacitor C and the battery B, and the rectified current generated by the rectifier circuit 40 is supplied to the capacitor C and / or the battery B to charge the capacitor C and / or the battery B.

A driving circuit 45 for driving the cell motor 46 is connected to the cell motor 46. The drive circuit 45 is connected to the capacitor C and the battery B, and can be driven by the electric power charged in the capacitor C and / or the battery B.

A control unit 50 is connected to each of the rectifier circuit 40 and the drive circuit 45, and the control unit 50 controls the rectifier circuit 40 and the drive circuit 45 by sending an operation command. Incidentally, as an example of the capacitor C, a super capacitor can be cited. Supercapacitor is a general term for electric double layer capacitors.

In the present embodiment, the generator 41 and the cell motor 46 are described as separate bodies. However, the present invention is not limited to this, and the generator 41 may also serve as the cell motor 46. The generator 41 of the present embodiment may be a single-phase generator or a multi-phase generator such as a three-phase generator. Further, the cell motor 46 of the present embodiment may be a single-phase motor or a multi-phase motor such as a three-phase motor.

When the internal combustion engine 60 is started and driven, the load 31, the notification unit 80, the voltage detection circuit 20, the load control circuit 30, the rectifier circuit 40, the drive circuit 45, and the internal combustion engine control circuit 100 The control unit 50 and the like are driven by electric power generated by the generator 41.

The control unit 50 described above also controls each of the first switch 10 and the second switch 15. As an example of a specific control mode, when the main switch 70 is in an OFF state, the control unit 50 according to the present embodiment connects the first terminal Ca of the capacitor C with the second switch 15 as shown in FIG. The first switch 10 is connected, and the first switch 10 connects the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75, whereby the first switch 10 connects the battery. The B first terminal Ba and the second switch 15 are shut off. As a result, when the main switch 70 is in the OFF state, the first terminal Ca of the capacitor C and the first terminal Ba of the battery B are disconnected.

Further, for example, when the cell motor 46 is started by turning on the main switch 70 as shown in FIG. 2 by, for example, turning the key of the motorcycle, and depressing the starter, the control unit 50 is shown in FIG. As shown, the first terminal Ca of the capacitor C and the first switch 10 are connected by the second switch 15, and the first terminal Ba of the battery B and the second switch 15 are connected by the first switch 10. Thus, the battery B and the capacitor C are connected in series. When the battery B and the capacitor C are connected in series as described above, the voltage of the battery B and the capacitor C (the voltage between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C). ) Is, for example, 24V.

Further, after the internal combustion engine 60 is started, the control unit 50 connects the first terminal Ca of the capacitor C and the first switch 10 by the second switch 15 as shown in FIG. The switch 10 connects the first terminal Ba of the battery B and the second terminal 70 b of the main switch 70 via the fuse 75. As a result, the current generated by the generator 41 is prevented from flowing into the capacitor C.

Further, when the main switch 70 is in the ON state and the voltage generated by the generator 41 becomes equal to or higher than the voltage at the time of full charge of the battery B, the control unit 50, as shown in FIG. The first terminal Ca of the capacitor C is grounded by the two switches 15 and the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 are connected via the fuse 75 by the first switch 10. The battery B and the capacitor C are connected in parallel so that both the battery B and the capacitor C can be charged. In this aspect, the voltage generated by the generator 41 is not set to such a connection form as soon as the voltage generated by the generator 41 becomes equal to or higher than the voltage when the battery B is fully charged. The first terminal Ca of the capacitor C is grounded by the second switch 15 and the first switch 10 of the battery B is only connected to the second switch 15 only when the voltage of the battery B becomes equal to or higher than the fully charged voltage (for example, several seconds). The battery B and the capacitor C may be connected in parallel by connecting the one terminal Ba and the second terminal 70b of the main switch 70 via the fuse 75. Note that the “predetermined time” in the present application is a time excluding the time until the two-wheeled vehicle starts running after the throttle is opened when the internal-combustion engine control circuit 100 controls the two-wheeled vehicle, for example.

As described above, the voltage detection circuit 20 detects the voltage when the battery B and the capacitor C are connected in series as shown in FIG. More specifically, as shown in FIG. 3, the voltage detection circuit 20 connects the first terminal Ca of the capacitor C and the first switch 10 by the second switch 15, and the battery by the first switch 10. When the first terminal Ba of B and the second switch 15 are connected, the voltage between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C is detected. Since the second terminal Bb of the battery B is grounded, the voltage detection circuit 20 detects the voltage at the second terminal Cb of the capacitor C.

When the battery B and the capacitor C are connected in series as described above, the voltage detection circuit 20 detects the voltage between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C. 2 is less than the startable voltage required for starting the cell motor 46 and starting the internal combustion engine 60, the control unit 50 causes the first terminal of the capacitor C to be switched by the second switch 15, as shown in FIG. Ca is connected to the first switch 10, and the first switch 10 connects the first terminal Ba of the battery B and the second terminal 70 b of the main switch 70 via the fuse 75. The first terminal Ba of the battery B and the second switch 15 are disconnected.

Further, as shown in FIG. 3, when the battery B and the capacitor C are connected in series, the voltage detection circuit 20 detects the voltage between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C, If the voltage is less than the startable voltage required to start the cell motor 46 and start the internal combustion engine 60, the control unit 50 issues a command to prompt the capacitor C to be charged by the external power supply 90, such as an indicator. You may output to the alerting | reporting part 80, and you may output the instruction | command which prompts to start the internal combustion engine 60 by driving the external drive parts 65, such as a kick.

Further, as shown in FIG. 3, when the battery B and the capacitor C are connected in series, the voltage detection circuit 20 detects the voltage between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C, When the voltage is less than the startable voltage required to start the cell motor 46 and start the internal combustion engine 60, and the battery B is sufficiently charged, the state shown in FIG. The capacitor C may be charged with the electric power charged in the battery B. Note that whether or not the battery B is sufficiently charged is connected to the first terminal Ca of the capacitor C and the first switch 10 by the second switch 15 as shown in FIG. With the first switch 10 connecting the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75, the voltage detection circuit 20 detects the voltage of the first terminal Ba of the battery B. That's fine.

"Method"
Next, an internal combustion engine control method using the above-described internal combustion engine control circuit 100 will be described.

As shown in FIG. 1, when the main switch 70 is in the OFF state, the second switch 15 connects the first terminal Ca of the capacitor C and the first switch 10, and the first switch 10 is connected to the first switch of the battery B. By connecting the one terminal Ba and the second terminal 70b of the main switch 70 via the fuse 75, the first switch Ba blocks the first terminal Ba and the second switch 15 of the battery B, and as a result, the capacitor The first terminal Ca of C and the first terminal Ba of the battery B are cut off.

For example, the driver of the motorcycle turns the key to turn on the main switch 70 as shown in FIG. 2 and then starts the cell motor 46 by pressing the starter, etc. When starting, prior to starting the cell motor 46, as shown in FIG. 3, the second switch 15 connects the first terminal Ca of the capacitor C and the first switch 10, and the first switch 10 By connecting the first terminal Ba of the battery B and the second switch 15, the battery B and the capacitor C are connected in series. Then, the cell motor 46 is started by the electric power of both the battery B and the capacitor C, and as a result, the internal combustion engine 60 is started.

When the battery B and the capacitor C are connected in series as described above, the voltage detection circuit 20 detects the voltage between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C, More specifically, the voltage of the second terminal Cb of the capacitor C is detected (since the second terminal Bb of the battery B is grounded). If the measured voltage is less than the startable voltage required to start the cell motor 46 and start the internal combustion engine 60, the second switch 15 is connected to the first terminal of the capacitor C as shown in FIG. Ca and the first switch 10 are connected, and the first switch 10 connects the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75, whereby the generator 41 is connected. Is prevented from flowing into the capacitor C.

When the voltage measured in this way is less than the startable voltage necessary for starting the cell motor 46 and starting the internal combustion engine 60, an instruction or the like for prompting the capacitor C to be charged by the external power source 90 is displayed. May be output to the notification unit 80, or a command for starting the internal combustion engine 60 by driving the external drive unit 65 such as a kick may be output to the notification unit 80.

As described above, when a command to urge the capacitor C to be charged by the external power source 90 is output to the notification unit 80 such as an indicator, for example, a predetermined indicator installed in a meter portion of the motorcycle is lit, flashing, etc. The driver of the motorcycle can recognize that the capacitor C needs to be charged. As a result, for example, as shown in FIG. 6, a motorcycle driver or the like connects the capacitor C to the external power supply 90, whereby the capacitor C is charged. When charging the capacitor C in this manner, the second switch 15 connects the first terminal Ca of the capacitor C and the first switch 10 as shown in FIG. Connects the first terminal Ba of the battery B and the second terminal 70 b of the main switch 70 via the fuse 75.

Further, as described above, when a command to start the internal combustion engine 60 by driving the external drive unit 65 such as a kick is output to the notification unit 80 such as an indicator, it is installed, for example, in a meter portion of a motorcycle. The predetermined indicator is lit, flashing, etc., and it is possible to recognize that it is necessary to start the internal combustion engine 60 by driving the external drive unit 65 such as a kick to a motorcycle driver or the like. As a result, the driver of the motorcycle drives the external drive unit 65 such as a kick, and the internal combustion engine 60 such as an engine is started.

After the internal combustion engine 60 is started as described above, the second switch 15 connects the first terminal Ca of the capacitor C and the first switch 10 as shown in FIG. Connects the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75, thereby preventing the current generated by the generator 41 from flowing into the capacitor C. At this time, the load 31, the notification unit 80, the voltage detection circuit 20 of the internal combustion engine control circuit 100, the load control circuit 30, the rectifier circuit 40, the drive circuit 45, the control unit 50, etc. Although driven by the generated power, the voltage generated by the generator 41 is less than the voltage when the battery B is fully charged.

When the main switch 70 is in the ON state and the voltage generated by the generator 41 is equal to or higher than the voltage when the battery B is fully charged, the second switch 15 is connected to the capacitor C as shown in FIG. The first terminal Ca is grounded, and the first switch 10 connects the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75, so that the battery B and the capacitor C are connected in parallel. Connect to. At this time, when the voltage generated by the generator 41 becomes equal to or higher than the voltage at the time of full charge of the battery B, the connection mode is not immediately set, but the generator 41 generates power for a predetermined time (for example, several seconds). Such a connection mode may be adopted when the voltage to be performed becomes equal to or higher than the voltage when the battery B is fully charged.

"effect"
Next, effects achieved by the present embodiment having the above-described configuration, which have not yet been described, or particularly important effects will be described.

According to the present embodiment, as shown in FIG. 1, when the main switch 70 is in the OFF state, the second switch 15 connects the first terminal Ca of the capacitor C and the first switch 10, and the first switch The first switch 10 connects the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75 so that the first switch Ba and the second switch 15 As a result, the first terminal Ca of the capacitor C and the first terminal Ba of the battery B are shut off. For this reason, when the main switch 70 is in the OFF state, the dark current is prevented from flowing between the battery B and the capacitor C, and the electric power accumulated in the battery B and the capacitor C are accumulated. It is possible to prevent the power that is present from decreasing.

Further, according to the present embodiment, the cell motor 46 is started by, for example, turning on a main switch 70 as shown in FIG. 3, the second switch 15 connects the first terminal Ca of the capacitor C and the first switch 10, and the first switch 10 is connected to the first terminal Ba of the battery B and the second as shown in FIG. 3. By connecting the switch 15, the battery B and the capacitor C are connected in series. For this reason, the electric current which flows when starting the cell motor 46 and starting the internal combustion engine 60 can be reduced. As a result, the apparatus configuration of the internal combustion engine control circuit 100 can be reduced in size.

Further, according to the present embodiment, after the internal combustion engine 60 is started, as shown in FIG. 4, the second switch 15 connects the first terminal Ca of the capacitor C and the first switch 10, and When the first switch 10 connects the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75, the first switch Ba and the second switch of the battery B are connected by the first switch 10. As a result, the current generated by the generator 41 is prevented from flowing into the capacitor C. For this reason, it is possible to prevent the capacitor C from being charged before the electric power generated by the generator 41 is stabilized by driving the internal combustion engine 60. As a result, the power supplied to the internal combustion engine control circuit 100 is drastically reduced due to charging of the capacitor C even though the power generated by the generator 41 is not stable. Can be prevented in advance.

Further, according to the present embodiment, when the main switch 70 is in the ON state and the voltage generated by the generator 41 is equal to or higher than the voltage when the battery B is fully charged, as shown in FIG. The second switch 15 grounds the first terminal Ca of the capacitor C, and the first switch 10 connects the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75. Thus, the battery B and the capacitor C are connected in parallel. For this reason, the capacitor C can be charged after the electric power generated by the generator 41 is stabilized by driving the internal combustion engine 60. As a result, the power supplied to the internal combustion engine control circuit 100 is drastically reduced due to charging of the capacitor C even though the power generated by the generator 41 is not stable. Can be prevented in advance. In addition, when the voltage generated by the generator 41 becomes equal to or higher than the voltage at the time of full charge of the battery B, the connection mode is not used immediately, but the generator 41 generates power for a predetermined time (for example, several seconds). Such a connection mode may be taken only when the voltage is equal to or higher than the voltage when the battery B is fully charged. In this case, the capacitor C can be charged after the power generated by the generator 41 is reliably stabilized. As a result, the power supplied to the internal combustion engine control circuit 100 is suddenly reduced by charging the capacitor C even more reliably, even though the power generated by the generator 41 is not stable. An unstable state can be prevented in advance.

In the present embodiment, as shown in FIG. 3, when the battery B and the capacitor C are connected in series, the voltage detection circuit 20 is connected between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C. More specifically, the voltage of the second terminal Cb of the capacitor C is detected. When the voltage measured by the voltage detection circuit 20 is less than the startable voltage required to start the cell motor 46 and start the internal combustion engine 60, the second switch 15 is connected to the capacitor as shown in FIG. The first terminal Ca of C and the first switch 10 are connected, and the first switch 10 connects the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75. Thus, the current generated by the generator 41 is prevented from flowing into the capacitor C. As a result, for example, when the external drive unit 65 such as a kick is driven to start the internal combustion engine 60 or to push the two-wheeled vehicle, for example, it is possible to reduce the labor on the two-wheeled vehicle driver or the like. .

This point will be explained. As shown in FIG. 3, when the current generated by the generator 41 is in a state where the current flows into the capacitor C, the external drive unit 65 or the internal combustion engine 60 can be started by pushing, for example, an external such as a kick The current generated by the generator 41 by driving the drive unit 65 or the current generated by the generator 41 by pushing the two-wheeled vehicle, for example, is absorbed by the capacitor C, and the internal combustion engine 60 may not be started. . In this regard, in the present embodiment, the voltage detection circuit 20 is connected between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C with the battery B and the capacitor C connected in series as shown in FIG. When the voltage measured by the voltage detection circuit 20 is less than the startable voltage required to start the cell motor 46 and start the internal combustion engine 60, as shown in FIG. It is possible to prevent the current generated in step (1) from being supplied to the capacitor C. For this reason, when driving the external drive part 65, such as a kick, and starting the internal combustion engine 60 or pushing the two-wheeled vehicle, it is possible to reduce, for example, the labor required for the driver of the two-wheeled vehicle.

As described above, in the present embodiment, when the cell motor 46 is started by turning on the main switch 70 and the battery B and the capacitor C are connected in series as shown in FIG. As a result of detecting a voltage between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C, the voltage is less than the startable voltage necessary for starting the cell motor 46 and starting the internal combustion engine 60. In such a case, it is possible to adopt a mode in which a command for urging the capacitor C to be charged by the external power supply 90 is output to the notification unit 80 such as an indicator. In this case, for example, the driver of the motorcycle can recognize that the capacitor C needs to be charged by the external power source 90.

Further, as described above, in the present embodiment, when the main motor 70 is turned on and the cell motor 46 is started, as shown in FIG. 3, the voltage when the battery B and the capacitor C are connected in series is shown. As a result of the detection circuit 20 detecting the voltage between the second terminal Bb of the battery B and the second terminal Cb of the capacitor C, the voltage can be started to start the cell motor 46 and start the internal combustion engine 60. When the voltage is lower than the voltage, it is also possible to adopt a mode in which a command for urging the engine to start the internal combustion engine 60 by driving the external drive unit 65 such as a kick is output to the notification unit 80 such as an indicator. In this case, for example, the driver of the motorcycle can recognize that it is necessary to start the internal combustion engine 60 by driving the external drive unit 65 such as a kick.

Incidentally, when the notification unit 80 notifies that the capacitor C is charged by the external power supply 90 or the notification unit 80 notifies the start of the internal combustion engine 60 by driving the external drive unit 65, Instead of charging the capacitor C with the power supply 90 or starting the internal combustion engine 60 with the external drive unit 65, the internal combustion engine 60 may be started by pushing.

Note that the notification unit 80 outputs a command that prompts the capacitor C to be charged by the external power supply 90 and a command that prompts the internal combustion engine 60 to start by driving the external drive unit 65 such as a kick. It is also possible to combine with the mode of outputting to In this case, the content to be output may be changed in accordance with the remaining amount of power charged in the capacitor C. For example, when the capacitor C is charged only with power less than a certain threshold, the capacitor C A command to urge the external power supply 90 to charge is output to the notification unit 80, and the electric power charged in the capacitor C is equal to or higher than the threshold value, but the electric power charged in the capacitor C starts the cell motor 46. When the internal combustion engine 60 cannot be started, it is also possible to employ a mode in which a command for urging the internal combustion engine 60 to start by driving the external drive unit 65 is output to the notification unit 80.

Second Embodiment Next, a second embodiment of the present invention will be described. FIG. 7 is a schematic configuration diagram showing an internal combustion engine control circuit 100 according to the second embodiment of the present invention, and shows an aspect corresponding to FIG.

In the first embodiment, when the main switch 70 is in the ON state and the voltage generated by the generator 41 is equal to or higher than the voltage when the battery B is fully charged, as shown in FIG. The first terminal Ca of the capacitor C is grounded by the two switches 15 and the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 are connected via the fuse 75 by the first switch 10. The battery B and the capacitor C are connected in parallel, and both the battery B and the capacitor C are charged. In this regard, in the second embodiment, a rotational speed detection circuit 95 that detects the rotational speed of the internal combustion engine 60 is provided. When the main switch 70 is in the ON state and the rotational speed of the internal combustion engine 60 is equal to or higher than the threshold rotational speed, the controller 50 causes the second switch 15 to switch the capacitor C, as shown in FIG. The battery B and the capacitor C are connected in parallel by grounding the first terminal Ca and connecting the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75 by the first switch 10. The battery B and the capacitor C are both charged. In the present embodiment as well, as in the first embodiment, when the rotational speed of the internal combustion engine 60 becomes equal to or higher than the threshold rotational speed, such a connection mode is not used immediately, but for a predetermined time (for example, several seconds). In the meantime, the second switch 15 grounds the first terminal Ca of the capacitor C and the first switch 10 is the first terminal Ba of the battery B only when the rotational speed of the internal combustion engine 60 becomes equal to or higher than the threshold rotational speed. The battery B and the capacitor C may be connected in parallel by connecting the second terminal 70 b of the main switch 70 via the fuse 75. By the way, the above-described “threshold rotational speed” is, for example, about 1.5 to 2.0 times the rotational speed of the internal combustion engine 60 during idling.

By the way, also in the second embodiment, as in the first embodiment, the voltage generated by the generator 41 may be detected by the voltage detection circuit 20, and the rotational speed of the internal combustion engine 60 becomes equal to or higher than the threshold rotational speed. When the voltage generated by the generator 41 becomes equal to or higher than the voltage when the battery B is fully charged, the second switch 15 grounds the first terminal Ca of the capacitor C, and the first switch 10 The first terminal Ba of B and the second terminal 70b of the main switch 70 are connected via the fuse 75, so that the battery B and the capacitor C are connected in parallel, and both the battery B and the capacitor C are charged. It may be.

In the second embodiment, the other configurations are substantially the same as those in the first embodiment. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

Also in this embodiment, the same effects as in the first embodiment can be obtained. Since it has been described in detail in the first embodiment, the description of the effects in this embodiment will be limited to those specific to this embodiment.

According to the present embodiment, when the main switch 70 is in the ON state and the rotational speed of the internal combustion engine 60 such as the engine becomes equal to or higher than the threshold rotational speed, as shown in FIG. Grounds the first terminal Ca of the capacitor C, and the first switch 10 connects the first terminal Ba of the battery B and the second terminal 70b of the main switch 70 via the fuse 75, so that the battery B and Capacitor C is connected in parallel. For this reason, it is possible to prevent the capacitor C from being charged before the electric power generated by the generator 41 is stabilized by driving the internal combustion engine 60. As a result, the power supplied to the internal combustion engine control circuit 100 is drastically reduced due to charging of the capacitor C even though the power generated by the generator 41 is not stable. Can be prevented in advance.

As in the first embodiment, when the rotational speed of the internal combustion engine 60 such as the engine becomes equal to or higher than the threshold rotational speed, the connection mode is not immediately set, but for a predetermined time (for example, several seconds). The second switch 15 grounds the first terminal Ca of the capacitor C and the first switch 10 is connected to the battery B only when the voltage generated by the generator 41 becomes equal to or higher than the voltage when the battery B is fully charged. The battery B and the capacitor C may be connected in parallel by connecting the first terminal Ba and the second terminal 70b of the main switch 70 via the fuse 75. In this case, the capacitor C can be charged after the power generated by the generator 41 is reliably stabilized. As a result, the power supplied to the internal combustion engine control circuit 100 is suddenly reduced by charging the capacitor C even more reliably, even though the power generated by the generator 41 is not stable. An unstable state can be prevented in advance.

Lastly, the description of each embodiment and the disclosure of the drawings described above are merely examples for explaining the invention described in the scope of claims, and the description of the embodiment or the disclosure of the drawings described above. The invention described in the scope of claims is not limited.

DESCRIPTION OF SYMBOLS 10 1st switch 15 2nd switch 20 Voltage detection circuit 30 Load control circuit 31 Load 40 Rectifier circuit 41 Generator 45 Drive circuit 46 Cell motor 50 Control part 60 Internal combustion engine 65 External drive part 70 Main switch 80 Notification part 95 Rotation speed detection circuit 100 Internal combustion engine control circuit B Battery Ba First terminal of battery (one end of battery)
Bb Second terminal of battery (the other end of the battery)
C Capacitor Ca First terminal of the capacitor (one end of the capacitor)
Cb capacitor second terminal (the other end of the capacitor)

Claims

An internal combustion engine control circuit for controlling an internal combustion engine,
A main switch connected between a cell motor and a generator and a battery and a capacitor; a first switch connected between the main switch and one end of the battery; and a first switch and one end of the capacitor A control unit for controlling each of the second switches connected between the two;
The other end of the capacitor is connected between the first switch and the main switch,
The first switch switches between a state of connecting the battery and the main switch and a state of connecting the one end of the battery and the second switch,
The second switch switches between a state of connecting the one end of the capacitor and the first switch and a state of disconnecting the one end of the capacitor and the first switch,
The controller is
When the main switch is in an OFF state, the one end of the capacitor and the first switch are connected by the second switch, and the one end of the battery and the second switch are disconnected by the first switch. ,
When the main motor is turned on to start the cell motor, the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery to the first switch. By connecting two switches, the battery and the capacitor are connected in series,
After the internal combustion engine is started, the one end of the capacitor and the first switch are connected by the second switch, and the one end of the battery and the second switch are disconnected by the first switch. An internal combustion engine control circuit.
The other end of the battery is grounded;
2. The internal combustion engine control circuit according to claim 1, wherein the second switch grounds the one end of the capacitor when the one end of the capacitor and the first switch are disconnected. 3.
A voltage detection circuit for detecting a voltage generated by the generator;
When the main switch is in the ON state and the voltage generated by the generator is equal to or higher than the voltage when the battery is fully charged, the control unit causes the second switch to connect the one end of the capacitor. The internal combustion engine control according to claim 2, wherein the battery and the capacitor are connected in parallel by grounding and connecting the one end of the battery and the main switch by the first switch. circuit.
When the main switch is in an ON state and the voltage generated by the generator is equal to or higher than the voltage at the time of full charge of the battery for a predetermined time, the control unit is controlled by the second switch. 4. The battery and the capacitor are connected in parallel by grounding the one end of the capacitor and connecting the one end of the battery and the main switch by the first switch. An internal combustion engine control circuit according to claim 1.
A rotation speed detection circuit for detecting the rotation speed of the internal combustion engine;
When the main switch is in an ON state and the rotational speed of the internal combustion engine is equal to or higher than a threshold rotational speed, the control unit grounds the one end of the capacitor by the second switch, and The internal combustion engine control circuit according to claim 2, wherein the battery and the capacitor are connected in parallel by connecting the one end of the battery and the main switch by a first switch.
When the main switch is in an ON state and the rotational speed of the internal combustion engine becomes equal to or higher than a threshold rotational speed for a predetermined time, the control unit causes the second switch to connect the one end of the capacitor. 6. The internal combustion engine control according to claim 5, wherein the battery and the capacitor are connected in parallel by grounding and connecting the one end of the battery and the main switch by the first switch. circuit.
At least the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery and the second switch to the other end of the battery. A voltage detection circuit for detecting a voltage between the other end of the capacitor;
When the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery and the second switch, the voltage detection circuit As a result of detecting the voltage between the other end of the battery and the other end of the capacitor, when the voltage is less than the startable voltage required to start the internal combustion engine, the second switch The one end and the first switch are connected, and the one end of the battery and the second switch are shut off by the first switch. Internal combustion engine control circuit.
When the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery and the second switch, the voltage detection circuit As a result of detecting the voltage between the other end of the battery and the other end of the capacitor, if the voltage is less than the startable voltage required to start the internal combustion engine, the control unit The internal combustion engine control circuit according to claim 7, wherein a command for prompting charging with an external power source is output to the notification unit.
An external drive unit is connected to the internal combustion engine, and the internal drive engine can be started by driving the external drive unit.
When the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery and the second switch, the voltage detection circuit As a result of detecting the voltage between the other end of the battery and the other end of the capacitor, when the voltage is less than the startable voltage required to start the internal combustion engine, the control unit is 9. The internal combustion engine control circuit according to claim 7, wherein a command to drive the internal combustion engine to drive the internal combustion engine is output to the notification unit.
The internal combustion engine according to any one of claims 1 to 9, wherein an external drive unit is connected to the internal combustion engine, and the internal drive engine can be started by driving the external drive unit. Control circuit.
11. The internal combustion engine control circuit according to claim 9, wherein the external drive unit is a kick.
An internal combustion engine control circuit for controlling an internal combustion engine, a main switch connected between a cell motor and a generator, a battery and a capacitor, a first switch connected between the main switch and one end of the battery, And an internal combustion engine control method using an internal combustion engine control circuit including a control unit that controls each of the second switches connected between the first switch and one end of the capacitor,
The other end of the capacitor is connected between the first switch and the main switch,
The first switch switches between a state of connecting the battery and the main switch and a state of connecting the one end of the battery and the second switch,
The second switch is configured to switch between a state of connecting the one end of the capacitor and the first switch and a state of disconnecting the one end of the capacitor and the first switch,
When the main switch is in an OFF state, the second switch connects the one end of the capacitor and the first switch, and the first switch disconnects the one end of the battery and the second switch. And
When the cell motor is started with the main switch turned on, the second switch connects the one end of the capacitor and the first switch, and the first switch connects the one end of the battery to the first switch. By connecting a second switch, the battery and the capacitor are connected in series,
After the internal combustion engine is started, the one end of the capacitor and the first switch are connected by the second switch, and the one end of the battery and the second switch are disconnected by the first switch. ,
An internal combustion engine control method.