JP2005248827A - Power supply control system for motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cope with an over discharge condition of a battery in a motorcycle using starter start and kick start together. <P>SOLUTION: AC generator 11 and drive system device group 14 which consists of electrical equipment necessary for engine drive are connected via a main switch SWM. A first switch SW1 is provided between the AC generator 11 and the battery 13. A first relay switch SWR1 of a starter relay 17 is provided in parallel with the first switch SW1. A second switch SW2 is provided between the AC generator 11 and a non-drive system device group 15 which consists of electrical equipment other than the drive system device group 14. The first and the second switch SW1, SW2 are turned on when a main stand is used and the same are turned off when the main stand is not used. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a power supply control system for driving an engine of a motorcycle, and more particularly to a power supply control system for a motorcycle in which start by kick is used.

  Some small motorcycles use both a cell starter start and a kick start. In such a small motorcycle, when the battery voltage is sufficiently high, the engine start using the cell starter can be performed. However, when the battery voltage is not sufficient, it is necessary to start the engine by operating the kick pedal of the operator. is there. However, if the battery is in an overdischarged state and its voltage drops significantly from the voltage required to operate the electrical components for driving the engine including the ECU and ignition control system, the power generated by the AC generator at the time of kick start As a result, the power supply voltage of the drive system electrical components cannot be sufficiently secured. In other words, when the battery is in an overdischarged state, there is a state where the engine cannot be started even by kick start. In such a case, it is necessary to remove the battery.

To solve this problem, when the battery voltage is monitored and the voltage value is lower than the set value, the start by the self-starter dynamo is prohibited, and the signal from the ignition signal pulser is sent while the cell switch is not pressed. There has been proposed an ignition control device that determines that a kick start has been detected when it is detected, sets the relay to the battery to OFF by the control circuit, and supplies the power generated by the self-starter dynamo only to the ignition control circuit (Patent Literature). 1).
JP 2001-82299 A

  However, since the battery voltage changes due to disturbances, operating conditions, and the like, it is difficult to determine whether or not the cell starter cannot be started by monitoring the battery voltage value as in Patent Document 1. In other words, when making a judgment by comparing the battery voltage with the set voltage value, starting with the cell starter is prohibited even if starting with the cell starter is possible, and starting with the cell starter is permitted when starting with the cell starter is not possible Inconvenience such as being caused may occur. Further, in the configuration of Patent Document 1, a lot of control is required until the kick start is recognized, and a complicated control circuit is required, resulting in high cost.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply control system that can cope with an overdischarged state of a battery in a motorcycle that is kick-started with a simple configuration at low cost.

  A motorcycle power supply control system of the present invention is a motorcycle power supply control system in which kick start is performed, and a main power supply circuit that supplies power from a generator to drive system electrical components for driving an engine; And a first switch means for switching on / off of the electrical connection between the main power supply circuit and the battery in a state where the main power supply circuit is electrically connected to the generator and the drive system electrical component. It is said.

  The first switch means is turned off when the main stand is in use, and is turned on when the main stand is not used.

  The power supply control system preferably includes second switch means for switching on / off electrical connection between the generator and non-drive system electrical components other than the drive system electrical components. The means is switched to the on state after the first switch means has been switched to the on state.

  The second switch means is turned off when the main stand is in use, for example, and is turned on when the main stand is not used. Further, for example, the second switch means is turned off when the gear is in the neutral position, and is turned on when the gear is not in the neutral position. Furthermore, when the power supply control system includes voltage monitoring means for monitoring the voltage value of the battery or the power supply voltage, the second switch means is turned on when the monitored voltage value reaches a predetermined value. It is preferable to be in a state.

  The first switch means is turned off, for example, when the gear is in the neutral position, and is turned on when the gear is not in the neutral position.

  The power supply control system includes starter switch means for supplying power from the battery to the cell starter and the drive system electrical components in a state where the electrical connection between the generator and the battery is turned off by the first switch means. It is preferable to provide. At this time, for example, the relay switch means of the starter relay is connected in parallel to the first switch means. Further, for example, a diode is connected in parallel to the first switch means, and the diode is connected in the forward direction from the battery side toward the drive system electrical component.

  A motorcycle according to the present invention is characterized by using the power supply control system described above.

  As described above, according to the present invention, in a motorcycle in which kick start is performed, a power supply control system that can cope with an overdischarged state of a battery can be provided at a low cost with a simple configuration.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an electrical configuration of a power supply control system for a motorcycle according to a first embodiment of the present invention.

  The power supply control system of the first embodiment controls power supply among an AC generator (generator) 11, a cell starter 12, a battery 13, a drive system device group 14, and a non-drive system device group 15 mounted on a motorcycle. It is a system for. The AC generator 11 is connected to the main switch SWM via the regulator rectifier 16, and the main switch SWM is connected to each electrical component of the drive system unit group 14. The main switch SWM is further connected to each electrical component of the non-driving system group 15 via the second switch SW2.

  The drive system group 14 includes electrical components directly required for driving the engine, such as an ECU, a fuel pump, an injector, an ignition coil, and an idle speed controller (ISC). The non-drive system group 14 includes For example, electrical components that are not directly involved in engine driving, such as stop lamps, direction indicators, buzzers, taillights, and headlights, are included.

  The positive side of the battery 13 is connected to the AC generator 11 side of the main switch SWM via the first switch SW1, and the negative side of the battery 13 is grounded. The AC generator 11 side of the main switch SWM is connected to the positive side of the battery 13 via a relay switch (first relay switch) SWR1 of the starter relay 17. That is, the relay switch SWR1 is connected in parallel with the first switch SW1. In FIG. 1, the connection of the relay switch SWR1 to the main switch SWM and the battery 13 is represented by end points A and B.

  That is, the main switch SWM is a switch for turning on / off the connection between the power supply system (AC generator and battery) and the drive system device group 14 and the non-drive system device group 15, and the second switch SW2 This is a switch for controlling on / off only the connection of the non-driving system group 15 to the power system even when the main switch SWM is in the on state and the driving system group 14 is connected to the power system. The first switch SW1 and the relay switch SWR1 are used for on / off control of the connection between the battery 13 and the drive system group 14 and the non-drive system group 15 when the main switch SWM is in the on state. Switch. The AC generator 11 is always connected to the drive system group 14 when the main switch SWM is turned on.

  One terminal of the cell starter 12 is connected to the positive side of the battery 13, and the other terminal is grounded via a relay switch (second relay switch) SWR2 of the starter relay 17. The starter relay 17 is connected to the positive side of the battery 13 via the starter switch SWS.

  That is, when the starter switch SWS is turned on after the main switch SWM is turned on, the relay switch SWR1 is turned on, and the battery 13 is driven regardless of the on / off state of the first switch SW1. Connected to the device group 14. At this time, the relay switch SWR2 is also turned on, so that the cell starter 12 is also turned on. Therefore, if the voltage of the battery 13 is sufficient for driving the cell starter 13 and the drive system group 14, the cell starter 13 and the drive system group 14 are driven by the battery 13 and the engine by turning on the starter switch SWS. Is started.

  On the other hand, when the starter switch SWS is in the off state, the relay switch SWR1 is also in the off state, so that the battery 13 is not connected to the AC generator 11 or the drive system group 14 unless the first switch SW1 is in the on state.

  The power supply control system of the first embodiment includes a main switch SWM, a first switch SW1, a second switch SW2, a starter relay (relay switches SWR1, SWR2) 17, and a starter switch SWS. The second switch SW2 is turned on / off in response to, for example, a use state of a main stand (not shown) or a neutral position of a gear (not shown). For example, in the first embodiment, the first and second switches SW1 and SW2 are both turned on when the main stand is used, and are turned off when the main stand is not used.

  Hereinafter, the operation of the power supply control system according to the first embodiment when the battery 13 is kick-started in an overdischarged state will be described with reference to FIG. FIG. 2 shows time-series changes in the power supply voltage and the battery voltage applied to the drive system group 14 at this time, with the horizontal axis representing time and the vertical axis representing voltage.

In FIG. 2, V _S is the minimum operating voltage necessary for the operation of the drive system group 14, and V _B0 is the voltage of the battery 13 in the overdischarged state (V _S > V _B0 ). The driver turns on the main switch SWM (time t0) while the main stand is used (the first and second switches SW1 and SW2 are off), and depresses the kick pedal (time t1) to drive the AC generator 11. (Period Tk). As a result, the electric power generated by the AC generator 11 is applied as the power supply voltage Vp to the drive system group 14 via the main switch SWM.

At this time, since the first switch SW1 and the relay switch SWR1 are in the OFF state, the battery 13 is electrically disconnected from the AC generator 11 and the drive system group 14, and the power generated by the AC generator 11 is overdischarged. It is not absorbed by a certain battery 13. That is, the power supply voltage Vp rises quickly and exceeds the minimum operating voltage V _S of the drive system group 14, and the drive system group 14 is activated. As a result, the engine reaches a complete explosion state (time t2), and the power supply from the AC generator 11 is further increased to reach a certain value.

Thereafter, when the main stand is raised (when not used), the first switch SW1 and the second switch SW2 are turned on (time point T3), and the power from the AC generator 11 is supplied to the battery 13 and the non-drive system. Since it is also supplied to the device group 15, the power supply voltage Vp starts to decrease. On the other hand, since battery 13 is charged by the electric power of AC generator 11, battery voltage V _B increases. When the decreasing power supply voltage Vp reaches a certain value (> V _S ) and becomes equal to the increasing battery voltage V _B (time t4), the decrease of the power supply voltage Vp stops and starts to increase while maintaining Vp = V _B.

  As described above, according to the power supply control system of the first embodiment, even if the battery is in an overdischarged state, the power generated by the AC generator is not absorbed by the battery. Can be reliably operated, and the engine can be reliably started with a simple configuration. In the first embodiment, the non-drive system device group is also electrically disconnected from the power supply system when the engine is started, so that the power supply voltage for the drive system device group can be more reliably ensured. Furthermore, since electric power is supplied to the battery after the engine drive is stabilized, the overcharged battery can be recharged without causing an engine stall.

  In the first embodiment, when the starter relay is provided with two relay switches and one of them is used for connection between the AC generator and the battery, the battery voltage is sufficiently simple with a very simple configuration. The engine can be started using a cell starter.

  In this embodiment, the non-driving system device group is electrically disconnected from the power supply system when the engine is started using the second switch SW2. However, when the power consumption of the non-driving system device group is sufficiently small, It is also possible to omit the second switch SW2. In this embodiment, two relay switches are used for the starter relay 17 and one is used for connection between the AC generator and the battery. For example, one relay switch is provided between the battery and the cell starter, and the cell starter side The same effect can be obtained by short-circuiting to the AC generator side. In this case, the number of starter relay switches can be one.

  Next, a modification of the first embodiment will be described with reference to FIG. FIG. 3 shows a time-series change in the power supply voltage applied to the drive system group 14 and the battery voltage when the battery is kick-started in an overdischarged state in the power supply control system according to the modification of the first embodiment. It is a thing.

  The power control system of the modification is different from the first embodiment only in that the second switch SW2 is turned on / off corresponding to the neutral position of the gear. The second switch SW2 of the modified example is turned on when the gear is in the neutral position, and is turned off in other cases.

That is, in FIG. 3, the power supply voltage Vp and the battery voltage V _B change in the same manner as in the first embodiment until the time point t3. When the main stand is raised (time t3), only the first switch SW1 is turned on, and the second switch SW2 is kept off. Therefore, the power generated by the AC generator 11 is supplied only to the drive system group 14 and the battery 13 and is not supplied to the non-drive system group 15, so that the battery voltage V _B recovers faster than in the first embodiment. In addition, the rate of decrease of the power supply voltage Vp can be small (time t4 ′). Thereafter, when the operator shifts the gear position from the neutral position, for example, to the first speed, the second switch SW2 is turned on (time point t5).

  As described above, also in the modified example, substantially the same effect as in the first embodiment can be obtained. Further, in the modified example, even when the main stand is not in use, power supply to the non-driving system device group is not performed while the gear is in the neutral state, so that a decrease in power supply voltage can be suppressed. That is, since the power supply to the non-driving system group can be stopped until the battery voltage is sufficiently recovered, the engine can be started more reliably by the kick. The effect is particularly great when the power consumption of the non-driving system device group is large.

  FIG. 4 is a block diagram showing an electrical configuration of a power supply control system for a motorcycle according to the second embodiment of the present invention. A power supply control system according to the second embodiment will be described with reference to FIG. Note that the power control system of the second embodiment substantially corresponds to the power control system of the first embodiment in which the relay switch SWR1 is replaced with a diode, and other configurations are substantially the same as those of the first embodiment. The description is omitted and the same reference numerals are used for the same components.

  In the second embodiment, instead of the relay switch SWR1, a diode D is connected in parallel with the first switch SW1, and the AC generator 11 side of the main switch SWM and the plus side of the battery 13 are connected. That is, the power supply control system of the second embodiment includes a main switch SWM, a first switch SW1, a second switch SW2, a starter relay (relay switch SWR2) 17, a starter switch SWS, and a diode D. The diode D is attached so that the direction from the battery 13 side to the main switch SWM side is the forward direction. Accordingly, the starter relay 17 is provided with only the relay switch SWR2. In FIG. 4, one terminal of the starter switch SWS is connected to the drive system group 14 side of the main switch SWM, but it may be directly connected to the plus side of the battery 13 as in the first embodiment. .

  As apparent from FIG. 4, the diode D does not flow electricity from the AC generator 11 side to the battery 13 side. It is not absorbed. On the other hand, when the battery voltage is sufficient, even if the first switch SW1 is in the off state, if the main switch SWM is in the on state, power is supplied to the drive system group 14 via the diode D and driven. Since the system unit group 14 can be operated, the starter switch SWM can be turned on thereafter to start the engine.

  The main switch SWM and the second switch SW2 are turned on / off in conjunction with the use state of the main stand and the neutral position of the gear, as in the first embodiment or its modification.

  As described above, according to the second embodiment, substantially the same effect as that of the first embodiment can be obtained with a simpler configuration than that of the first embodiment.

  Next, a modification of the second embodiment will be described with reference to FIG. FIG. 5 is a block diagram showing an electrical configuration of a modification of the second embodiment. The power control system of the modification of the second embodiment substantially corresponds to the power control system of the second embodiment in which the second switch SW2 is replaced with a relay switch, and the other configurations are substantially the same as those of the second embodiment. Therefore, the description thereof is omitted, and the same reference numerals are used for the same components.

As described above, in the modification of the second embodiment, the second switch SW2 of the second embodiment is replaced with the relay switch SWR3, and the on / off control of the relay switch SWR3 is performed by the ECU. That is, in this modification, for example, a power supply voltage Vp or the battery voltage V _B is monitored by ECU, whose value in the ON state relay switch SWR3 from sufficiently elevated to reach a predetermined value.

  Thereby, also in 2nd Embodiment, the effect similar to the modification of 2nd Embodiment or 1st Embodiment can be acquired. In this modification, the connection timing of the non-driving system device group 15 can be determined by directly monitoring the power supply voltage or the battery voltage, so the non-driving system device group 15 is connected to the power supply system at a more appropriate timing. can do.

  Next, a third embodiment to which the present invention is applied will be described with reference to FIG. In the power supply control system of the third embodiment, a cell starter dynamo (SSD) 20 is used instead of the AC generator 11 and the cell starter 12. In addition, about the structure similar to 1st, 2 embodiment, the same referential mark is used and the description is abbreviate | omitted.

  The cell starter dynamo 20 is connected to a main switch SWM constituting a main power supply via an SSD driver 21, and the main switch SWM is connected to each electrical component of the drive system group 14 and the non-drive system via the second switch SW2. It is connected to each electrical component of the device group 15. The first and second switches SW1 and SW2 are arranged in the same manner as in the first and second embodiments and function in the same manner. That is, the first and second switches SW1, SW2 are turned on when the main stand is in use or the gear is in the neutral position, and are turned off at other times.

  In the third embodiment, the relay switch SWR2 is connected in parallel to the first switch SW1. That is, when the first switch and the relay switch SWR2 are in the OFF state, the battery 13 is disconnected from the main power supply circuit that connects the cell starter dynamo 20 and the drive system device group 14. On the other hand, when either the first switch SW1 or the relay switch SWR2 is turned on, the battery 13 is connected to a main power supply circuit that connects the cell starter dynamo 20 and the drive system group 14.

  Therefore, when the first switch SW1 is in the off state and the main switch SWM is in the on state and the kick start is performed, the cell starter dynamo 20 functions as a generator, and the generated power is driven without being absorbed by the battery 13. Supplied to the system unit group 14. When the starter switch SWS is turned on, power is supplied to the cell starter dynamo 20 via the relay switch SWR2, and the cell starter dynamo 20 functions as a cell starter.

  As described above, the same effects as those of the first and second embodiments can be obtained in the configuration of the power supply control system of the third embodiment.

  In the present embodiment, the on / off state of the first switch SW1 is switched according to the use state of the main stand, but it may be switched according to the neutral position of the gear. Further, the on / off of the first and second switches SW1 and SW2 may be interlocked with those other than the main stand and the gear position. For example, a manual type dedicated switch can be used. Further, in the present embodiment, the description has been given by taking an example of a motorcycle in which cell starter start and kick start are used together. However, the configuration of the first and second switches of the present invention is also applied to a motorcycle dedicated to kick start. Can be applied.

1 is a block diagram showing an electrical configuration of a power supply control system for a motorcycle according to a first embodiment of the present invention. In the power supply control system of 1st Embodiment, the time-sequential change of the power supply voltage and battery voltage which are applied to the drive type | system | group apparatus group when a kick start is performed in the overdischarge state of a battery is shown. In the power supply control system of the modification of 1st Embodiment, the time series change of the power supply voltage and battery voltage which are applied to the drive type | system | group apparatus group when a battery kick-starts in an overdischarged state is shown. It is a block diagram which shows the electric constitution of the power supply control system of the motorcycle which is 2nd Embodiment of this invention. It is a block diagram which shows the electrical structure of the modification of 2nd Embodiment. It is a block diagram which shows the electric constitution of the power supply control system of the motorcycle which is 3rd Embodiment of this invention.

Explanation of symbols

11 AC generator (generator)
12 Cell Starter 13 Battery 14 Drive System Group 15 Non-Drive System Group 17 Starter Relay 20 Cell Starter Dynamo SW1 First Switch SW2 Second Switch SWM Main Switch SWR1 First Relay Switch SWR3 Third Relay Switch SWS Starter switch

Claims (11)

A power control system for a motorcycle in which kick start is performed,
A main power supply circuit for supplying power from a generator to drive system electrical components for driving an engine;
A first switch means for switching on / off the electrical connection between the main power supply circuit and the battery in a state where the main power supply circuit is electrically connected to the generator and the drive system electrical component; A power supply control system for a motorcycle, comprising:   2. The power control according to claim 1, wherein the first switch means is turned off when the main stand is in use, and turned on when the main stand is not used. system.   Second switch means for switching on / off electrical connection between the generator and a non-drive system electrical component other than the drive system electrical component is provided, and the second switch means is the first switch. 2. The power supply control system according to claim 1, wherein the power supply control system is switched to an on state after the device is switched to an on state.   4. The power control according to claim 3, wherein the second switch means is turned off when the main stand is in use, and turned on when the main stand is not used. system.   4. The power supply control system according to claim 3, wherein the second switch means is turned off when the gear is in the neutral position, and is turned on when the gear is not in the neutral position.   Voltage monitoring means for monitoring the voltage value of the battery or the power supply voltage is provided, and the second switch means is turned on when the monitored voltage value reaches a predetermined value. The power supply control system according to claim 3.   2. The power supply control system according to claim 1, wherein the first switch means is turned off when the gear is in a neutral position, and is turned on when the gear is not in a neutral position.   Starter switch means for supplying power from the battery to the cell starter and the drive system electrical components in a state where the electrical connection between the generator and the battery is turned off by the first switch means. The power supply control system according to claim 1, further comprising:   9. The power supply control system according to claim 8, wherein a relay switch means of a starter relay is connected in parallel to the first switch means.   9. The power supply control system according to claim 8, wherein a diode is connected in parallel to the first switch means, and the diode is in a forward direction from the battery side toward the drive system electrical component.   A motorcycle using the power supply control system according to any one of claims 1 to 10.

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