JP2014082863A - Charging control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging control device capable of preventing a discharge phenomenon of a battery which can occur at the time of reverse connection of the battery with a simple circuit configuration.SOLUTION: A charging control device which can be applied to a motorcycle 1 having cranking means 71, 72 for cranking an engine 32 without using power of a battery 17 includes an on signal invalidating circuit part 80 for invalidating an on signal at the time of reverse connection in which a minus terminal 61 is connected to a positive electrode terminal 17a of the battery 17 and a plus terminal 64 is connected to a negative electrode terminal 17b. The on signal invalidating circuit part 80 includes a transistor 81 which is turned into an opened state at the time of positive connection of the battery 17 and turned into a closed state at the time of reverse connection of the battery. The transistor 81 is connected to a bypass circuit part 97 which is branched from a charging control signal line 82 and connected to the plus terminal 64.

Description

  The present invention relates to a charge control device, and more particularly, to a charge control device used when charging an in-vehicle battery by a generator driven to rotate by a driving force of an engine.

  2. Description of the Related Art Conventionally, a charging control device that charges an in-vehicle battery with power generated by an AC generator connected to an engine crankshaft is known.

  Patent Document 1 discloses a charge control circuit in which a thyristor is arranged between an AC generator and a battery, and the amount of power supplied from the generator to the battery is adjusted by controlling the gate voltage of the thyristor. It is disclosed. In such a charge control circuit, even if the battery terminals are connected in the reverse direction by mistake, the current does not flow back to the circuit portion where the malfunction occurs due to the backflow of the current.

  Further, in Patent Document 2, when the kick starter is driven in a state where the battery is reversely connected, the CPU determines whether or not the battery is correctly connected. A motor drive control device is disclosed in which a relay provided between the generator and the generator is opened to cut off the connection between the generator and the battery, thereby preventing an electronic device from being damaged due to a reverse current.

Japanese Patent No. 46158211 JP 2001-69796 A

  By the way, in a motorcycle, there is a model in which an engine can be cranked by a kick starter or a push without using a cell motor driven by power supplied from a vehicle-mounted battery. When the charge control device described in Patent Document 1 is applied to such a model, if the engine is cranked by a kick starter or pushing while the battery is reversely connected, the voltage generated by this cranking At the moment when the voltage exceeds the positive voltage of the battery, there is a possibility that the charge control circuit operates normally and the gate voltage of the thyristor is switched on. Then, due to the thyristor's characteristic that once energization is started, energization continues even when the gate voltage is turned off, the energization continues even after the cranking is completed, and the battery is discharged without the user being aware of the reverse connection of the battery. There is a possibility that.

  For this problem, as described in Patent Document 2, it is determined by the CPU whether or not the battery is correctly connected, and if necessary, the CPU interrupts the connection between the battery and the generator. Although it can be dealt with by technology, it is necessary to use a CPU, so that there is a problem that the electric circuit becomes complicated and the production cost increases.

  An object of the present invention is to solve the above-described problems of the prior art and to provide a charge control device that can prevent a battery discharge phenomenon that may occur during reverse battery connection with a simple circuit configuration.

  In order to achieve the above object, the present invention provides a generator (70) that performs AC power generation with the driving force of the engine (32), a battery (17) that is charged by the generated power of the generator (70), The positive terminal (64) connected to the positive terminal (17a) of the battery (17) and the negative terminal (17b) connected to the negative terminal (17b) of the battery (17) when the battery (17) is positively connected. 61) having a connection between the generator (70) and the battery (17) interposed between the generator (70) and the positive terminal (64). A switching circuit section (90) for switching on / off by turning on / off the thyristor (96), and the thyris for controlling a current supplied from the generator (70) to the battery (17). A vehicle having a charge control signal line (82) for outputting an ON signal to (96) and cranking means (71, 72) for cranking the engine (32) without using the electric power of the battery (17). In the charge control device applied to (1), the negative terminal (61) is connected to the positive terminal (17a) of the battery (17), and the positive terminal (64) is connected to the negative terminal (17b). A first feature is that an on-signal invalidation circuit section (80) for invalidating the on-signal at the time of reverse connection is provided.

  The ON signal invalidation circuit unit (80) includes the positive terminal (64) connected to the positive terminal (17a) of the battery (17) and the negative terminal (61) connected to the negative terminal (17b). ) Is connected to the charging control signal line (82). The switching means (81) is open when the battery is connected to the battery and is closed when the battery (17) is reversely connected. There is a second feature in that it is connected to a bypass circuit part (97) that branches off from the terminal and is connected to the plus terminal (64).

  The switching means (81) is closed by the negative potential of the battery (17) when the battery (17) is reversely connected, and opened when the battery (17) is positively connected. There is a third feature in that it is configured to maintain.

  The switching means (81) includes a collector (81C) connected to the charge control signal line (82), an emitter (81E) connected to the plus terminal (64), and a diode (77). The base (81B) is connected to the ground, and the base (81B) and the emitter (81E) are connected via a predetermined resistor (79), and the base (81B) is connected to the base (81B). A fourth feature is that the cathode of the diode (77) is connected.

  The cranking means (71) has a fifth feature in that it is a kick starter including a kick pedal (35) attached to the engine (32).

  Further, the cranking means (72) is a driving force transmission path for transmitting the rotational driving force of the engine (32) to the driving wheels (WR) of the vehicle through at least the transmission (73). There are 6 features.

  According to the first feature, since the negative signal is connected to the positive terminal of the battery and the positive signal is connected to the negative terminal, the on signal invalidation circuit unit that invalidates the on signal at the time of reverse connection is provided. Even if the engine is cranked in a state where the battery is reversely connected, the ON signal of the thyristor is invalidated, so that the thyristor is not switched to the energized state by the electric power generated during the cranking. Accordingly, it is possible to prevent a battery discharge phenomenon that may occur at the time of reverse connection of the battery by simply changing the circuit configuration without using an expensive component such as a CPU.

  According to the second feature, the on signal invalidation circuit unit is opened when the positive terminal is connected to the positive terminal of the battery and the negative terminal is connected to the negative terminal, and when the battery is reversely connected. The switching means includes a switching means that is in a closed state, and the switching means is connected to a bypass circuit portion that branches from the charge control signal line and is connected to the positive terminal. It can be configured to connect the negative electrode of the battery and the charge control signal line when the ON signal is transmitted and reversely connected, so it can occur when the battery is reversely connected with a simple circuit configuration without using a CPU. The characteristic battery discharge phenomenon can be prevented.

  According to the third feature, the switching means is configured to be closed by the negative potential of the battery when the battery is reversely connected, while being kept open when the battery is positively connected. Thus, it is possible to obtain a charge control device that immediately exhibits a discharge prevention function in accordance with the reverse connection.

  According to a fourth feature, the switching means is a transistor having a collector connected to the charge control signal line, an emitter connected to the positive terminal, and a base grounded via a diode, Since the emitter is connected via a predetermined resistor and the cathode of the diode is connected to the base, the ON signal invalidation circuit can be configured with a simple configuration.

  According to the fifth feature, since the cranking means is a kick starter including a kick pedal attached to the engine, an effective charge control device is obtained when attempting to start the engine with the kick starter when the battery is reversely connected. It is done.

  According to the sixth feature, the cranking means is a driving force transmission path for transmitting the rotational driving force of the engine to the driving wheels of the vehicle through at least the transmission. An effective charge control device can be obtained when starting is attempted.

1 is a right side view of a motorcycle to which a charge control device according to an embodiment of the present invention is applied. 1 is a left side view of a motorcycle. It is a block diagram which shows the structure of a charge control apparatus (at the time of battery positive connection). It is a block diagram which shows the structure of a charge control apparatus (at the time of battery reverse connection). It is the left view which expanded the circumference of a battery. It is a perspective view around a battery. It is a side view of the battery case seen from the vehicle body front side. It is a side view of the battery case seen from the vehicle body rear side.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a right side view of a motorcycle 1 to which a charge control device according to an embodiment of the present invention is applied. FIG. 2 is a left side view of the same. The body frame 2 of the motorcycle 1 includes a main frame 3 extending from the head pipe 13 to the rear of the vehicle body, an engine hanger 33 extending downward from the head pipe 13, and a pair of left and right rear members extending from the curved portion of the main frame 3 to the upper rear of the vehicle body. A frame 21 and a pair of left and right rear stays 37 connected to the main frame 3 and supporting the rear frame 21 from below are provided.

  A top bridge 6 and a bottom bridge 6 a that support a pair of left and right front forks 4 above and below the head pipe 13 are fixed to a steering stem (not shown) that is rotatably supported by the head pipe 13. A front wheel WF is rotatably supported at the lower end portion of the front fork 4, and a front fender 5 is disposed on the upper portion of the front wheel WF. A handle bar 10 having a pair of left and right handle grips 12 is attached to the top of the top bridge 6. A clutch lever 45 for operating a manually operated clutch 46 is attached to the left side of the handlebar 10 in the vehicle width direction.

  A single-cylinder engine 32 is attached between the main frame 3 and the engine hanger 33, and an engine guard 34 that extends in the vehicle width direction is disposed in front of the vehicle body of the engine hanger 33. The engine 32 includes a manually operated clutch 46 that connects and disconnects transmission of driving force from the crankshaft to the transmission 73 (see FIG. 3). The driving force of the engine 32 is transmitted from the drive sprocket 47 fixed to the output shaft of the transmission 73 to the rear wheel WR via the drive chain 48 and the driven sprocket 49 when the clutch 46 is connected. On the right side of the engine 32 in the vehicle width direction, a kick pedal 35 of a kick starter that rotates the crankshaft by a passenger's stepping force to start the engine 32 is attached.

  A swing arm 29 that pivotally supports a rear wheel WR as a drive wheel is swingably supported on a pivot shaft 30 provided in the main frame 3. The rear side of the swing arm 29 is suspended from the rear stay 37 by a pair of left and right rear cushions 27. A chain cover 36 that protects a drive chain (not shown) is attached to the left side of the swing arm 29 in the vehicle width direction.

  The fuel injection device 15 and the air cleaner box 18 are connected to the rear portion of the cylinder head 32a of the engine 32. An exhaust pipe 31 connected to the muffler 28 is connected to the front portion of the cylinder head 32a. A horn 2 a is attached to the engine hanger 33 at a position in front of the cylinder head 32, and an in-vehicle battery 17 is disposed on the rear side of the fuel injection device 15. Further, an ECU 20 as a control device is disposed on the seat rail 21 at a position above the rear cushion 27.

  A fuel tank 14 is disposed above the engine 32 so as to straddle the main frame 3 in the vehicle width direction. A meter device 9, a headlamp 8, and a pair of left and right front blinker devices 7 are disposed in front of the fuel tank 14 and in front of the handlebar 10. A seat 19 is disposed behind the fuel tank 2, and a pair of side covers 16 in the vehicle width direction are attached below the seat 19. A grab bar 23 is attached to the rear of the seat 19, and a seat cowl 22 is attached to the lower part thereof. A rear fender 26 provided with a taillight device 24 and a pair of left and right rear turn signal devices 25 is attached to the rear end portion of the seat cowl 22.

  FIG. 3 is a block diagram illustrating a configuration of the charge control device. The engine 32 is provided with an ACG starter motor 70 as a generator. The ACG starter motor 70 also has a function of a cell motor for starting the engine with electric power, and is connected to the crankshaft 32b of the engine 32. That is, the ACG starter motor 70 functions as a motor when the engine 32 is started and rotates the crankshaft 32b. After the engine 32 is started, the ACG starter motor 70 is used as an electric component such as the headlamp 8, the taillight device 24, the ECU 20, and the like. It is configured to function as a generator that supplies and charges the in-vehicle battery 17.

  The electric power generated by the ACG starter motor 70 is supplied to the illumination power control unit 75, the trapezoidal wave generation unit 74, and the battery 17, respectively. The battery 17 is provided with a positive terminal 17a and a negative terminal 17b. By connecting the positive terminal 61 of the harness 60 to the positive terminal 17a and connecting the negative terminal 62 of the harness 62 to the negative terminal 17b, the battery 17 is correctly connected to the electric circuit. Become.

  A reference voltage generator 83 is connected to the battery 17, and a trapezoidal wave generator 74 is connected to the ACG starter motor 70. The output of the trapezoidal wave generation unit 74 and the output of the reference voltage generation unit 83 are input to the comparator 76, respectively. A thyristor 96 is provided between the ACG starter motor 70 and the battery 17. When the thyristor 96 is turned on, power supply for charging the battery 17 is started. The thyristor 96 is switched from off to on when a predetermined gate voltage is applied to the gate voltage line 99.

  That is, the reference voltage of the battery 17 generated by the reference voltage generation unit 83 and the trapezoidal wave generated by the trapezoidal wave generation unit 74 are compared with each other by the comparator 76, and the battery 17 needs to be charged. When detected, the transistor 93 is turned on by outputting a predetermined on signal from the charge control signal line 82. When the gate current line 99 flows along with this, the thyristor 96 is turned on and the battery 17 is turned on. Power supply to is started.

  The switching circuit unit 90 including the thyristor 96 includes a diode 91, a transistor 93, a resistor 92 interposed between the diode 91 and the collector of the transistor 93, a diode established between the emitter of the transistor 93 and the gate current line 99. 94, a gate voltage line 99, a resistor 96 and a capacitor 95 that connect the emitter of the transistor 93 and the downstream side of the thyristor 96.

  The on signal invalidation circuit unit 80 having the charge control signal line 82 includes a charge control signal line 82, a transistor 81, a diode 77, and resistors 78 and 79. The transistor 81 has a collector 81C connected to the charge control signal line 82, an emitter 81E connected to the battery 17, and a base 81B connected to the emitter 81E via a resistor 79. The diode 77 has a function of stopping the current when the battery 17 is positively connected, and the base 81B is grounded via a resistor 78 and a diode 77. The resistor 79 has a function of making the base voltage of the transistor 81 higher than the emitter voltage.

  More specifically, the transistor 81 as a switching means has a collector 81C connected to the charge control signal line 82, an emitter 81E connected to the positive terminal 64, and a base 81B connected to the ground via a diode 77. Is. The on signal invalidation circuit unit 80 is configured such that a base 81B and an emitter 81E are connected via a predetermined resistor 79, and a cathode of a diode 77 is connected to the base 81B. The emitter 81E of the transistor 81 is connected to a bypass circuit unit 97 branched from the charge control signal line 82 and connected to the plus terminal 64, and the transistor 81 is configured to be open when the battery 17 is positively connected. Has been.

  In the motorcycle 1 according to the present embodiment, when the engine 32 is started, the crankshaft 32b is rotated (cranked) by the ACG starter motor 70, and the first cranking means 71 that is a kick starter including the kick pedal 35, or The cranking can also be performed by the second cranking means 72 which is a driving force transmission means including the transmission 73 and the rear wheel WR.

  In the first cranking means 71, when the kick pedal 35 is depressed with the main switch (not shown) turned on, the crankshaft 35 is cranked. On the other hand, the second cranking means 72 cranks the crankshaft 35 by rotating the rear wheel WR with the main switch turned on. This starting operation using the second cranking means 72 is so-called “pushing”. More specifically, the clutch 73 is disengaged by operating the clutch lever 45 with the transmission 73 in the neutral state. When the vehicle body is pushed and momentum is applied, the transmission is brought into an in-gear state to rotate the rear wheels WR to perform cranking. In this case, the clutch 46 needs to be a manually operated clutch, not a centrifugal clutch.

  FIG. 4 is a block diagram illustrating a state in which the battery 17 is reversely connected in the charge control device illustrated in FIG. 3. The operation of the charge control circuit described with reference to FIG. 3 is based on the assumption that the battery 17 is positively connected. On the other hand, when the user accidentally reversely connects the battery 17, that is, when the negative terminal 62 of the harness 62 is connected to the positive terminal 17a and the positive terminal 61 of the harness 60 is connected to the negative terminal 17b, Such a problem may occur.

  In a state where the battery 17 is reversely connected, the ACG starter motor does not rotate even when the start switch is pressed, so the user may attempt kick start or push start. At this time, 0V is applied to the positive terminal side and 12V is applied to the negative terminal side (GND side). However, if the voltage generated by cranking exceeds the GND voltage of 12V even for a short time, the potential difference between the positive terminal and the negative terminal. Is in a state equivalent to that at the time of positive connection, the trapezoidal wave generation unit 74, the reference voltage generation unit 83, and the comparator 76 are normally driven in the short time, and the ON signal is sent from the charge control signal line 82 to the thyristor 96. Will be output. Then, the thyristor 96 is turned on, and the battery 17 starts to be discharged. Once the energization is started, the energization is continued even when the gate voltage is turned off. However, the battery 17 may be discharged without noticing the reverse connection of the battery.

  On the other hand, in the charge control device according to the present embodiment, the on signal invalidation circuit unit 80 is provided, so that the thyristor 96 is switched on even when cranking is performed in the reverse battery connection state and the on signal is output. To prevent that.

  When the battery 17 is reversely connected, the collector 81C and the emitter 81E of the transistor 81 are electrically connected to each other by the negative potential of the battery 17 (closed state), so that the ON signal output from the comparator 76 passes through the bypass circuit unit 97. Thus, it is absorbed on the 0 (zero) V side of the battery 17 and is effectively invalidated. Thereby, since the base voltage of the transistor 93 becomes 0V, the base voltage of the transistor 93 does not exceed the emitter voltage, the collector-emitter of the transistor 93 does not conduct, and the gate voltage of the thyristor 96 is 0V. Will remain.

  As described above, according to the charge control device according to the present embodiment, even if the engine is cranked in a state where the battery is reversely connected, the on signal of the thyristor is invalidated, so that power is generated during cranking. The thyristor is not switched to the energized state by the generated power. Accordingly, it is possible to prevent a battery discharge phenomenon that may occur at the time of reverse connection of the battery by simply changing the circuit configuration without using an expensive component such as a CPU.

  The on-signal invalidation circuit unit 80 includes a transistor 81 that is open when the battery 17 is positively connected and is closed when the battery 17 is reversely connected. The transistor 81 branches off from the charge control signal line 82. Since the battery 17 is connected to the bypass circuit unit 97 connected to the positive terminal 64, an ON signal is transmitted to the switching circuit unit 90 when the battery 17 is positively connected. The negative electrode and the charge control signal line 82 can be connected to each other, and a battery discharge phenomenon that may occur at the time of reverse battery connection can be prevented with a simple circuit configuration without using a CPU.

  FIG. 5 is an enlarged left side view around the battery. FIG. 6 is a perspective view around the battery. 5 and 6 show a state where the side cover 16 (see FIG. 1) is removed. The battery 17 is fixed in a state of being housed in a battery case 50 made of resin or the like, on the left side in the vehicle width direction of the main frame 3 behind the cylinder head 32a of the engine 32. The battery case 50 is formed in a box shape having different vertical, horizontal and height dimensions according to the shape of the battery, and an opening 50a is provided on the left side in the vehicle width direction. It is configured to be removable on the left side in the vehicle width direction.

  The battery case 50 is fixed to the rear frame 21 by an upper stay 53 formed at the upper portion thereof, and is fixed to the main frame 3 by a lower stay 57 formed at the lower portion thereof. The pair of left and right rear frames 21 are welded to the curved portion of the main frame 3 above the battery case 50, and the two rear frames 21 are connected by gussets 39 immediately after the welded portion. Between the battery case 50 and the cylinder head 32a, a fuel cock 38 for turning on and off the supply of fuel to the fuel tank 14 is disposed. A main harness 42 is routed above the battery case 50 by a plurality of clamps 43 provided on the side surfaces of the main frame 3 and the rear frame 21.

  The positive electrode terminal 17a and the negative electrode terminal 17b of the battery 17 are spaced apart from each other in the front-rear direction of the vehicle body at a position above the left end surface in the vehicle width direction. A positive terminal 64 provided on the red harness 62 is fixed to the positive terminal 17a by a fastening member (not shown) such as a bolt, and a negative terminal 61 provided on the black harness 60 is connected to the negative terminal 17b. Is fixed by a fastening member (not shown) such as a bolt. The plus terminal 64 and the minus terminal 61 are each made of a metal plate or the like. A protective cover 63 made of red rubber or the like is attached to the plus terminal 64.

  A main fuse case 56 is disposed on the side surface of the battery case 50 on the vehicle body front side. The air cleaner box 18 on the vehicle body rear side of the battery case 50 has a structure in which a lid member 41 is attached to the box portion 40, and a main harness 42 is arranged on the upper portion of the lid member 41 so as to be directed in the vehicle longitudinal direction. Yes.

  The battery 17 inserted from the opening 50a of the battery case 50 and pushed in to the back is held by the battery case 50 by a fixing band 65 made of a metal plate or the like. The fixing band 65 is integrally formed with a holding plate 66 that holds down the upper portion of the battery 17. The fixing band 65 engages the hook portion 68 on the lower side of the vehicle body with the engaging portion 59 of the battery case 50, and the fastening portion 67 on the upper side of the vehicle body using a fastening member (not shown) such as a bolt. The battery 17 is held at a predetermined position by being fixed to the upper flange 52.

  The opening 50a of the battery case 50 is provided with notches 54 and 55 that partially extend at positions corresponding to the positive terminal 17a and the negative terminal 17b. The notch 55 has a function of exposing the plus terminal 64 of the harness 62 to the outside of the battery case 50, and the notch 54 has a function of exposing the minus terminal 61 of the harness 60 to the outside of the battery case 50.

  With this structure, the gap between the battery 17 and the battery case 50 is minimized. This makes it difficult to attach the positive terminal 64 and the negative terminal 61 to the terminals 17a and 17b later when the battery 17 is stored by mistake with the terminals 17a and 17b facing away. At this time, the user can be informed of an error in the attachment method and the reverse connection of the battery 17 can be prevented. Further, when the harness is reversely connected with the battery 17 removed from the battery case 50, it is difficult to store the battery 17 in the battery case 50, so that an error in the attachment method is notified to the user at this point. be able to. Furthermore, after the battery 17 is inserted into the battery case 50 in the normal direction, the length of the harness is limited, making it difficult to reversely connect.

  FIG. 7 is a side view of the battery case 50 as viewed from the front side of the vehicle body. FIG. 8 is a side view of the battery case 50 viewed from the rear side of the vehicle body. Battery connection harnesses 60 and 62 branched from the main harness 43 are routed upward along the side surface (the front-rear direction surface) of the battery 17 after being routed below the battery 17 once. Accordingly, the plus terminal 64 and the minus terminal 61 can be attached to and detached from the positive terminal 17a and the negative terminal 17b and the battery 17 can be taken in and out without almost bending the harnesses 60 and 62.

  The notch 54 corresponding to the negative terminal 61 extends to the back side of the fuse case 56 when viewed from the front of the vehicle body. Further, when viewed from the rear of the vehicle body, the cutout portion 55 corresponding to the plus terminal 64 is formed to extend further below the vehicle body than the cutout portion 54 on the negative side because the protective cover 63 needs to be attached. As described above, the shapes of the notches 54 and 55 on the plus side and the minus side are different, so that the possibility of erroneous reverse connection is further reduced.

  The configuration of the on signal invalidation circuit unit and the switching circuit unit, the number and type of electronic components used in each part of the electric circuit, the structure of the cranking means, the shape and structure of the battery case, etc. are not limited to the above embodiment. Various modifications are possible. The charging control device according to the present invention is not limited to a motorcycle, and can be applied to various vehicles such as a saddle riding type three / four-wheeled vehicle.

  DESCRIPTION OF SYMBOLS 1 ... Motorcycle (vehicle), 17 ... Battery, 17a ... Positive electrode terminal, 17b ... Negative electrode terminal, 32 ... Engine, 35 ... Kick pedal, 50 ... Battery case, 50a ... Opening, 54, 55 ... Notch, 61 ... Negative terminal, 64 ... Positive terminal, 70 ... ACG starter motor (generator), 71 ... First cranking means (cranking means), 72 ... Second cranking means (cranking means), 73 ... Transmission, 77 DESCRIPTION OF SYMBOLS ... 80 ... ON signal invalidation circuit, 81 ... Transistor (switching means), 81B ... Base, 81C ... Collector, 81E ... Emitter, 82 ... Charge control signal line, 90 ... Switching circuit part, 96 ... Thyristor, 97 ... Bypass circuit, WR ... Rear wheel

Claims (6)

When the generator (70) that performs AC power generation with the driving force of the engine (32), the battery (17) that is charged by the generated power of the generator (70), and the battery (17) are connected positively The present invention is applied to a vehicle (1) having a positive terminal (64) connected to a positive terminal (17a) of a battery (17) and a negative terminal (61) connected to a negative terminal (17b) of the battery (17). ,
A switching circuit unit that is interposed between the generator (70) and the plus terminal (64) and switches connection / disconnection between the generator (70) and the battery (17) by turning on / off the thyristor (96). (90), a charge control signal line (82) for outputting an ON signal to the thyristor (96) to control the current supplied from the generator (70) to the battery (17), and the battery ( In the charging control device applied to the vehicle (1) having cranking means (71, 72) for cranking the engine (32) without using the electric power of 17),
When the negative terminal (61) is connected to the positive terminal (17a) of the battery (17) and the positive terminal (64) is connected to the negative terminal (17b), the ON signal is invalidated. A charge control device comprising an ON signal invalidation circuit section (80) to be used. The ON signal invalidation circuit unit (80) has the positive terminal (64) connected to the positive terminal (17a) of the battery (17) and the negative terminal (61) connected to the negative terminal (17b). Switching means (81) that is open when connected positively and closed when reversely connected to the battery (17),
The switching means (81) is connected to a bypass circuit section (97) branched from the charge control signal line (82) and connected to the plus terminal (64). The charging control device described.   The switching means (81) is closed by the negative potential of the battery (17) when the battery (17) is reversely connected, and is kept open when the battery (17) is positively connected. The charge control device according to claim 2, wherein the charge control device is configured as follows. The switching means (81) includes a collector (81C) connected to the charge control signal line (82), an emitter (81E) connected to the plus terminal (64), and a ground via a diode (77). A transistor having a base (81B) to be connected;
The base (81B) and the emitter (81E) are connected through a predetermined resistor (79), and the cathode of the diode (77) is connected to the base (81B). The charge control device according to claim 3.   The charge control device according to any one of claims 1 to 4, wherein the cranking means (71) is a kick starter including a kick pedal (35) attached to the engine (32).   The cranking means (72) is a driving force transmission path for transmitting the rotational driving force of the engine (32) to the driving wheels (WR) of the vehicle through at least the transmission (73). The charge control apparatus according to any one of claims 1 to 4.