JP2881910B2 - Vehicle charging control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a charge control device that controls energization of a field winding of a generator that charges a battery mounted on a vehicle.

[Conventional technology]

Conventionally, as shown in FIG. 3, a voltage control means of a vehicle charging control device has a first terminal 83 connected to an output terminal 81 of a vehicle generator 1 and one end connected to the first terminal 83. A second terminal 84 connected to the other end of the field winding 13, a third terminal 85 connected to the ground terminal 82 of the vehicle generator 1, a first terminal 83 and a second terminal 84. A flywheel diode 202 connected between the second terminal 84 and the third terminal 85;
The switch means 201 is connected between the first and second switches, and the ON / OFF control of the switch means 201 is performed, the current supplied to the field winding 13 is adjusted, and the voltage of the battery 4 is controlled.

However, in this configuration, the voltage of the battery 4 is always applied to both ends of the field winding 13 even if the key switch 6 is turned off and the switch means 201 is turned off. If moisture adheres to the wire 13, electrolytic corrosion may occur.

As a countermeasure, the switch means is connected between the first terminal and the second terminal, the field winding is connected between the second terminal and the ground terminal of the vehicle generator, and the flywheel diode is connected to the second terminal.
And the third terminal. In this case, since no voltage is applied to the field winding when the switch is turned off, there is no possibility of electric corrosion of the field winding.

[Problems to be solved by the invention]

However, with this configuration, if the third terminal of the voltage control means is disconnected from the ground terminal of the vehicle generator when the switch means is turned on and power is being generated, a flywheel diode, A current path is formed through the field winding through the earth terminal of the generator. Then
The voltage at the third terminal of the voltage control means is higher than the voltage at the second terminal by the forward voltage of the flywheel diode. Further, when the switch means is ON, the voltage at the second terminal is high, so the potential difference between the first terminal and the third terminal is reduced, and the potential difference between the first terminal and the third terminal is reduced. Switch means to maintain the desired voltage at
The control signal to be continued to be input. However, the potential difference between the first terminal and the third terminal becomes equal to or lower than a voltage enough to turn on the switch means (hereinafter referred to as a threshold level), the switch means turns off, and the voltage of the second terminal decreases. start. As the voltage at the second terminal decreases, the voltage at the third terminal also decreases. When the potential difference between the third terminal and the first terminal becomes equal to or higher than the threshold level, the switch means is turned on again. Then, the voltage of the second terminal rises and the third terminal
And the above operation is repeated.

As described above, since the switch means operates in an unsaturated state at a voltage near the threshold level, a current always flows through the field winding, and the voltage at the first terminal increases while the power is continuously generated. The potential difference between the first terminal and the third terminal does not increase. Therefore, voltage control cannot be performed as described above, and the voltage of the first terminal further increases, causing problems such as overcharging of the battery and breakage of the switch means.

Therefore, an object of the present invention is to prevent the field winding from being connected to the positive electrode potential of the battery when power generation is stopped, and also to prevent a problem that occurs at the time of a conduction failure of a circuit configuration that can achieve such an object. I do.

In particular, it is an object of the present invention to prevent a problem such as disconnection of a terminal of a circuit portion when a conduction failure from the circuit portion to a ground terminal of a vehicle generator occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent electrolytic corrosion and prevent problems such as overcharging of a battery and breakage of switch means even when circuit conduction is poor.

[Means for solving the problem]

In order to achieve the above object, in the charging control device according to the present invention, the first terminal of the voltage control means is connected to the output terminal of the vehicle generator, and the second terminal is connected to one end of the field winding. The third terminal and the other end of the field winding are connected to the ground terminal of the vehicle generator, the voltage detecting means is connected between the first terminal and the third terminal, and the switch means is connected to the first terminal. And a second terminal connected between the third terminal of the vehicle generator and a ground terminal of the vehicle generator. The second terminal has a current path from the third terminal to the second terminal. In the case where conduction failure occurs in the conduction to the ground terminal of the vehicle generator via the third terminal such as disconnection, the power generation stop means for detecting this, turning off the switch means and stopping the power generation is provided. is there.

In detecting the conduction failure, the fact that the voltage of the second terminal with respect to the third terminal is equal to or less than a predetermined value may be used. The fact that the voltage of the first terminal with respect to the first terminal becomes equal to or lower than a predetermined value may be used.

According to a fourth aspect of the present invention, there is provided a charge control device, comprising: a ground terminal (85) connected to a ground terminal (82) of a vehicle generator (1); A field terminal (84) connected to the field winding (13) of the
Switch means (201) connected to the field winding via the field terminal, provided between the positive electrode side of the vehicle-mounted battery and the field winding, for intermittently energizing the field winding; When,
An energizing circuit (202) for allowing an energization from a signal line connected to the ground terminal to a signal line connected to the field terminal, and causing a predetermined voltage drop by energization in the direction;
(214) detecting a voltage drop occurring in the energizing circuit, detecting a conduction failure from the signal line connected to the ground terminal to the ground terminal of the vehicle generator, and performing a countermeasure operation. And a technical means called a vehicle charge control device, comprising: a detecting means (3).

5. The vehicle charging control device according to claim 4, wherein the conduction failure detecting means is connected to a signal line connected to the field terminal, and is connected to a signal line connected to the ground terminal. Detecting means (301, 302, 303) (315, 302) for detecting a voltage drop corresponding to energization of the signal line connected to the terminal through the energizing circuit, and countermeasures in response to the output of the detecting means Abnormality processing means for performing the operation (304, 305, 306, 307, 308, 309, 310, 311, 312, 31
3, 314).

In the vehicle charging control apparatus according to claim 4 or 5, a control means (213) for generating a command signal for commanding conduction and cutoff of the switch means, and responding to the command signal output from the control means. A driving circuit (203, 204, 205, 206, 207, 208, 20)
9, 210, 211, 212).

In the vehicle charging control device according to any one of claims 4 to 6, the conduction failure detecting means (3) prohibits a countermeasure operation when a command signal from the control means indicates that the switch means is shut off. Prohibited means (306, 307, 30
8, 309).

Further, in the vehicle charging control device according to the seventh aspect, the conduction failure detection circuit (3) may include a return unit (313, 314) for instructing a return from the countermeasure operation.

The charging control device for a vehicle according to any one of claims 4 to 8, wherein the continuity failure detection circuit (3) is configured to shut off the switch means as a countermeasure operation.
1, 312).

The reference numerals in parentheses indicate the correspondence with the embodiments described later.

[Action and effect of the invention]

According to the configuration of the first aspect, the switch means is OFF.
When (interruption), the other end of the field winding whose one end is connected to the ground terminal of the vehicle generator is opened, so that the battery voltage is not applied to both ends of the field winding, This prevents the positive potential of the battery from being constantly applied to the winding. Therefore, it is possible to prevent electrolytic corrosion of the field winding due to the potential difference.

Further, when a conduction failure such as the third terminal of the voltage control means coming off the ground terminal of the vehicle generator is detected, the switch means is forcibly shut off to stop the power generation. For this reason, it is possible to prevent problems such as overcharging of the battery and breakage of the switch means.

According to the fourth aspect of the present invention, since the switch means is provided between the positive electrode side of the vehicle-mounted battery and the field winding, the switch means is shut off when power generation is stopped such as when the engine is stopped. No positive electrode potential of the battery is applied to the line. Therefore, for example, electric corrosion of the field winding due to the potential difference can be prevented. Also, in the circuit part,
An energizing circuit is provided, which allows current to flow from the signal line connected to the ground terminal to the signal line connected to the field terminal, and generates a predetermined voltage drop by energizing in the direction. , A conduction failure from the signal line connected to the ground terminal to the ground terminal of the vehicle generator is detected, and a countermeasure operation is performed. For this reason, even if a conduction failure occurs from the signal line in the circuit section connected to the ground terminal of the circuit section to the ground terminal of the vehicle generator, the occurrence of the failure can be prevented by the countermeasure operation.

〔Example〕

 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a vehicle alternator (hereinafter referred to as a generator 1), and the generator 1 is rotationally driven by a Y-connected three-phase armature winding 11 and an engine (not shown). It comprises a field winding 13 and a rectifier 12 for full-wave rectifying the AC output output to the armature winding 11. The generator 1
As is well known, it is driven by an engine via a belt and a pulley. 81 is an output terminal of the generator 1 and 82 is a ground terminal of the generator 1.

Reference numeral 4 denotes a battery, which is connected to the full-wave rectifier 12. Reference numeral 6 denotes a key switch, and 7 denotes a changeover switch for connecting the electric load 5 to the battery 4.

The voltage control circuit 2 includes a first terminal (hereinafter, referred to as a B terminal) 83 connected to the full-wave rectifier 12, and a switch P
A second terminal (F terminal) 84 connected between the channel power MOS FET 201 and the field winding 13 and a third terminal (E terminal) 85 connected to the ground terminal of the generator 1 Have.

The source of the P-channel power MOS type FET 201 as the switching means is connected to the B terminal 83, the drain is connected to the F terminal 84, and the gate is connected to the B terminal 83 via the resistor 203.
The flywheel diode 202 is connected between the F terminal 84 and the E terminal 85. The collector of the transistor 204 is connected between the resistor 203 and the gate of the P-channel power MOSFET 201, the base is connected to the collector of the transistor 207 via the resistor 205, and the emitter is connected to the E terminal 85.

The collectors of transistors 207, 209 and 212 are connected to key switch 6 via resistors 206, 208 and 211, respectively.
Each emitter is connected to the E terminal 85.
Further, the base of the transistor 207 is connected to the collector of the transistor 209, the base of the transistor 209 is connected to the collector of the transistor 212 via the resistor 210, and the base of the transistor 212 is connected to the E terminal 85 via the resistor 215.

The voltage detection circuit 213 detects a voltage between the B terminal 83 and the E terminal 85, and includes a resistor 21 connected in series.
31, Zener diode 2132 and resistor 2133 are B terminal
It is connected between 83 and E terminal 85. Further, a resistor 2134 and a capacitor 2135 are connected in parallel to smooth a voltage between the zener diode 2132 and the resistor 2133 connected in series.

The power generation stop circuit 3 is operated by the voltage of the F terminal 84 with respect to the E terminal 85.

Diode 301, resistor 302 and resistor 30 connected in series
3 is connected between the F terminal 84 and the E terminal 85.

The collectors of the transistors 305, 306 and 314 are connected to each other, and the key switch 6 is connected via a resistor 304.
The emitter is connected to the E terminal 85, the base of the transistor 305 is connected between the resistor 302 and the resistor 303, and the base of the transistor 306 is connected to the key switch 6 via the resistor 307.
In addition, the bases of the transistors 314 are connected to the outputs of the pulse generation circuit 313, respectively.

The collector of the transistor 308 is connected to the base of the transistor 306, the emitter is connected to the E terminal 85, and the base is connected between the resistor 210 and the collector of the transistor 212 via the resistor 309. The capacitor 310 is connected between the collector and the emitter of the transistors 305, 306 and 314. The collector of transistor 312 is resistor 205
And the collector of the transistor 207, the base is a resistor 311
Are connected to the collectors of the transistors 305, 306, and 314, respectively.

 Next, the operation of the above configuration will be described.

 First, the operation of the voltage control circuit 2 will be described.

When the generator 1 is driven by the engine, the voltage of the cathode of the Zener diode 214 (hereinafter, referred to as a voltage dividing point voltage) Vc is [Zener voltage Vz + transistor 212].
When the voltage at the B terminal 83 is equal to or lower than the fourth predetermined value Vref determined by the base-emitter voltage Vbe], that is, when the voltage at the B terminal 83 is equal to or lower than the desired voltage, the transistor 212 is turned off. Then, since the transistor 209 is turned on, the transistor 207 is turned off, and the transistor 204 is turned on, the P-channel power MOS FET 201 is turned on, and current is supplied to the field winding 13 via the P-channel power MOS FET 201. Is done. Therefore, the output of the generator 1 increases, the voltage of the B terminal 83 increases, and the battery 4 is charged.

When the voltage at the B terminal 83 rises and the divided point voltage Vc becomes equal to or higher than the fourth predetermined value Vref, the transistor 212 is turned on.
Then, since the transistor 209 is turned off, the transistor 207 is turned on, and the transistor 204 is turned off, the P-channel power MOS FET 201 is turned off, and the current flowing through the field winding is returned to the flywheel diode 202 and attenuated. .
Accordingly, the output of the generator 1 decreases, and the voltage at the B terminal 83 drops.

As described above, the voltage control circuit 2 has a P-channel power MO
The conduction and cutoff of the S-type FET 201 are repeated, and the voltage at the B terminal 83 is controlled to a desired voltage by controlling the voltage dividing point voltage Vc to a fourth predetermined value Vref. For example, it is controlled to 14 [V].

 Next, the operation of the power generation stop circuit 3 will be described.

The E terminal 85 of the voltage control circuit 2 is connected to the ground terminal 82 of the generator 1.
Is connected to the fourth predetermined value Vc
When the voltage is equal to or lower than Vref, when the transistor 212 is turned off by the operation of the voltage control circuit 2, the transistor 308 is turned on and the transistor 306 is turned off.

However, when the transistor 312 is turned on by the cutoff of the transistor 306, the transistor 204 is turned off, and the P-channel power MOS FET 201 is turned off. It stops. In order to prevent this, a capacitor 310 is provided between the base and the emitter of the transistor 312 to delay the conduction of the transistor 312.

On the other hand, since the P-channel power MOS type FET 201 conducts, the voltage of the F terminal 84 rises substantially to the voltage of the B terminal 83, and the diode 301 conducts. Then, the transistor 305 is turned on without the transistor 312 being turned on, and the transistor 312 is turned on.
Is maintained in a disconnected state. That is, the voltage control circuit 2 operates as usual, the output of the generator 1 increases, and the voltage of the B terminal 83 increases.

When the voltage at the B terminal 83 rises and the divided point voltage Vc becomes equal to or higher than the fourth predetermined value Vref, the transistor 212 is turned on by the operation of the voltage control circuit 2 and the transistor 308 is turned off, so that the transistor 306 is turned on. On the other hand, the P channel power M
Since the OS type FET 201 is cut off and a current flows through the flywheel diode 202, the voltage at the F terminal 84 becomes lower than the voltage at the E terminal 85 by the forward voltage Vf of the flywheel diode 202. This shuts off diode 301,
Transistor 305 is turned off.

In this case, the transistor 306 is turned on and the transistor 312 is kept off. That is, the voltage control circuit 2 operates as usual, and the output of the
The voltage of 83 drops.

As described above, the E terminal 85 of the voltage control circuit 2 is connected to the generator 1
When the power supply stop circuit 3 is connected to the ground terminal 82, the power generation stop circuit 3 does not operate, and normal voltage control is performed.

Next, a case where the E terminal 85 of the voltage control circuit 2 is separated from the ground terminal 82 of the generator 1 will be described.

The E terminal 85 of the voltage control circuit 2 is connected to the ground terminal 82 of the generator 1.
If not, the E terminal is a flywheel diode
202, it is connected to the earth terminal 82 of the generator 1 via the field winding 13. The division point voltage Vc is equal to a fourth predetermined value Vref
Hereinafter, when the transistor 212 is turned off by the operation of the voltage control circuit 2 and the P-channel power MOS type FET 201 is conducting, the field winding 13 via the flywheel diode 202 is turned on.
Therefore, the voltage at the F terminal 84 becomes lower than the voltage at the E terminal 85 by the forward voltage Vf of the flywheel diode 202. Then, the diode 301 is turned off and the transistor 305 is turned off.

On the other hand, when the P-channel power MOSFET 201 is conducting, as shown in the operation of the voltage control circuit 2, the transistor
306 is also shut off, which causes transistor 312 to conduct. Since the transistor 204 is turned off by the conduction of the transistor 312, the P-channel power MOS type FET 201 is turned off.
No current is supplied to the field winding 13, and power generation is maintained in a stopped state.

That is, the power generation stop circuit 3 is a P-channel power MOS type F
When ET201 is conducting, F terminal 84 with respect to E terminal 85
Is lower than the second predetermined value, it is detected that the E terminal 85 of the voltage control means 2 is disengaged from the ground terminal 82 of the generator 1, and the P-channel power MOS FET 201 is cut off to generate power. Is to stop.

If the E terminal of the voltage control means 2 is defective,
When the power generation is stopped by the power generation stop circuit 3 after disconnecting from the ground terminal 82 and then reconnected, it is necessary to return to the normal power generation, and the pulse generation circuit 313 operates to return to the normal power generation. In the pulse generation circuit 313, a trigger pulse (for example, ON time is several hundred μs, cycle is several tens ms) is generated, and the transistor 314 is driven.

When the transistor 314 is turned on by this trigger pulse, the transistor 312 is turned off and the P-channel power MOS
FET 201 conducts again. At this time, E of the voltage control means 2
If the terminal 85 is separated from the ground terminal 82 of the generator 1,
Since a current flows from the terminal 85 to the F terminal 84, the voltage at the F terminal 84 is smaller than the voltage at the E terminal 85 by the forward voltage Vf of the flywheel diode 202, and the transistor 3
05 remains shut off. Therefore, when the trigger pulse disappears, the P-channel power MOSFET 201 is shut off again,
Power generation stops.

On the other hand, when the E terminal 85 of the voltage control means 2 is again connected to the ground terminal 82 of the generator 1, when the transistor 314 is turned on by the trigger pulse, the transistor 312 is turned off, and the P-channel power MOS FET 201 is turned on again. Conduct. Then, when the voltage at the F terminal 84 rises to approximately the voltage at the B terminal 83 and the diode 301 conducts, the transistor 305 conducts. Therefore, the transistor 312 is kept off. Thereafter, normal voltage control is performed.

 Hereinafter, a second embodiment will be described with reference to the drawings.

In the power generation stop circuit 3 of the first embodiment, when the voltage of the F terminal 84 with respect to the E terminal 85 drops below a second predetermined value while the P-channel power MOS FET 201 is conducting, the voltage control means 2 E terminal 85 is the ground terminal of generator 1
The power generation is detected as being out of the range and stopped.

On the other hand, when the P-channel power MOS type FET 201 is conducting, the power generation stop circuit 3 of the second embodiment has an E terminal 85.
The voltage at the B terminal 83 falls below a third predetermined value set to be smaller than the first predetermined value, the E terminal 85 of the voltage control means 2 is disconnected from the ground terminal 82 of the generator 1. And stops power generation.

In FIG. 2, reference numerals correspond to those in the first embodiment.

To detect that the voltage at the B terminal 83 with respect to the E terminal 85 has dropped below a third predetermined value, the (+)
The side input is connected between the resistor 2131 and the Zener diode 2132. The (−) side input is a fifth predetermined value. The output is connected to the base of the transistor 305 via the resistor 302.

The comparator 315 inputs the voltage dividing point voltage Vc, and when the voltage dividing point voltage Vc with respect to the voltage at the E terminal 85 falls below a fifth predetermined value, that is, when the voltage at the B terminal 83 with respect to the E terminal 85 becomes the fifth voltage. 3
Is operated to shut off the transistor 305 when the voltage falls below a predetermined value.

The flywheel diode 14 is provided on the generator 1 side, and has a current path between the F terminal 84 and the E terminal 85 by the resistor 214.

When the E terminal 85 is connected to the ground terminal 82 of the generator 1, the voltage of the B terminal 83 with respect to the E terminal 85 is controlled to a desired voltage by the operation of the voltage control circuit 2. The transistor 305 is turned on so that the transistor 305 is always turned on. Therefore, the transistor 312 is kept off, and the power generation stop circuit 3 does not operate.

When the E terminal 85 comes off the ground terminal 82 of the generator 1,
The E terminal 85 is connected to the ground terminal 82 of the generator 1 via the resistor 214 and the field winding 13. When the P-channel power MOS type FET 201 conducts and the output of the generator 1 is to be increased, a current flows from the resistor 214 to the field winding 13. Resistance 21
It increases by the voltage drop of 4. Further, since the voltage of the F terminal 84 is substantially equal to the voltage of the B terminal 83, the voltage of the E terminal 85 rises greatly.

Since the ground voltage of the comparator 315 is equal to the voltage of the E terminal 85, the input voltage on the (+) side is [divided point voltage Vc−the voltage on the E terminal 85], and the input voltage on the other (−) side. The predetermined value of 5 is always set as a voltage having a constant potential difference with respect to the potential of the E terminal 85.

The voltage at the E terminal 85 rises, and the input voltage on the (+) side of the comparator 315 drops below the fifth predetermined value on the (−) side. 3, the comparator 315 shuts off, and the transistor 305 is turned off.
Turn off. As a result, the transistor 312 is turned on and the transistor 204 is turned off.
T201 shuts off and power generation stops.

 The operation of the pulse generation circuit is the same as in the first embodiment.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram showing a first embodiment of the device of the present invention, FIG. 2 is an electric circuit diagram showing a second embodiment of the device of the present invention, and FIG.
FIG. 1 is an electric circuit diagram showing an example of a conventional charge control device. 1 ... generator, 13 ... field winding, 2 ... voltage control circuit, 202
…… Flywheel diode, 213 …… Voltage detection circuit, 3
…… Generation stop circuit, 4… Battery, 5 …… Electrical load, 81…
... generator output terminal, 82 ... generator ground terminal, 83 ... first
Terminal (B terminal), 84 ... second terminal (F terminal), 85 ...
Third terminal (E terminal).

Claims (9)

(57) [Claims] An armature winding having an output terminal and a ground terminal, the armature winding being connected between the output terminal and the ground terminal;
And a field generator having one end connected to the ground terminal, charging a battery connected to the output terminal, and a vehicle generator driven by an engine; and an output terminal of the vehicle generator. A first terminal connected to
A second terminal connected to the other end of the field winding, a third terminal connected to a ground terminal of the vehicle generator, and a potential difference between the first terminal and the third terminal. A voltage detecting means for detecting, and a switching means connected between the first terminal and the second terminal, and a current path from the third terminal to the second terminal; O
N, OFF control, adjust the current flowing through the field winding,
A voltage control unit that controls the voltage of the battery to a first predetermined value by controlling a voltage detected by the voltage detection unit to a desired voltage; and a voltage control unit that controls a voltage of the vehicle through a third terminal of the voltage control unit. A vehicle charging control device comprising: a power generation stopping unit configured to detect a conduction failure to a ground terminal of the generator and to stop the power generation by turning off the switch unit. 2. The power generation stopping means, wherein the switch means is
In the ON state, and when the voltage of the second terminal with respect to the third terminal of the voltage control means is equal to or less than a second predetermined value,
2. The vehicle charging control apparatus according to claim 1, wherein the controller detects a conduction failure to the ground terminal of the vehicle generator via the third terminal, and turns off the switch to stop power generation. 3. The power generation stopping means, wherein the switch means is
In the ON state, and when the voltage of the first terminal with respect to the third terminal of the voltage control means is equal to or less than a third predetermined value set to be smaller than the first predetermined value, the third 2. The vehicle charging control device according to claim 1, wherein the control unit detects a conduction failure to a ground terminal of the vehicle generator via a terminal and turns off the switch means to stop power generation. 4. A ground terminal (85) connected to a ground terminal (82) of a vehicle generator (1), and a field terminal (84) connected to a field winding (13) of the vehicle generator. Switch means connected to the field winding via the field terminal, and provided between the positive electrode side of the vehicle-mounted battery and the field winding to interrupt current supply to the field winding. (201) an energizing circuit (202) which permits energization from the signal line connected to the ground terminal to the signal line connected to the field terminal, and causes a predetermined voltage drop by energizing in the direction.
(214) detecting a voltage drop occurring in the energizing circuit, detecting a conduction failure from the signal line connected to the ground terminal to the ground terminal of the vehicle generator, and performing a countermeasure operation. A charging control device for a vehicle, comprising: a detection unit (3). 5. The continuity failure detecting means (3) is connected to a signal line connected to the field terminal, from a signal line connected to the ground terminal to a signal line connected to the field terminal. Detecting means (301, 302, 303) for detecting a voltage drop corresponding to energization through said energizing circuit
(315, 302) and abnormality processing means (304, 305, 306, 307, 308, 309, 310, 311, 31) for performing a countermeasure operation in response to the output of the detection means.
The vehicle charging control device according to claim 4, further comprising: (2, 313, 314). 6. A control means (213) for generating a command signal for commanding conduction and cutoff of said switch means, and a drive circuit (203) for driving said switch means in response to a command signal output from said control means. , 204, 205, 206, 207, 20
The charging control device for a vehicle according to claim 4 or 5, further comprising: (8, 209, 210, 211, 212). 7. The continuity failure detecting means (3), wherein prohibiting means (306, 307,
The vehicle charge control device according to any one of claims 4 to 6, further comprising: (308, 309). 8. The charging control apparatus for a vehicle according to claim 7, wherein said conduction failure detecting circuit includes a return means for instructing return from the countermeasure operation. 9. The continuity failure detecting circuit (3) includes shutoff means (311 and 312) for shutting off the switch means as a countermeasure operation.
The charging control device for a vehicle according to any one of the above.