JPH04236102A - Charging system for automatically guided vehicle - Google Patents

Abstract

PURPOSE:To prevent electric shock by mounting a core and a coil, to be coupled electromagnetically with an electromagnet which is excited by an AC power supply previously installed on the track of an automatically guided vehicle, on the automatically guided vehicle and rectifying an AC voltage induced in the coil thereby charging a battery. CONSTITUTION:An electromagnet M1 comprising a primary coil 4 to be excited by a previously installed AC power supply 6 and a primary core 2 is installed on the track 10 of an automatically guided vehicle 1. The automatically guided vehicle 1 is mounted with a secondary core 3 and a secondary coil 5 which are electromagnetically coupled with the flux of the electromagnet M1, where the secondary core 3 is lifted or lowered by sans of a secondary core moving mechanism 9. When the vehicle 1 arrives at a charging station, the secondary core 3 is lowered and abutted against the primary core 2 thus being interlinked efficiently with the flux of the primary core 2. AC voltage induced in the secondary coil 5 is then rectified, through a charging circuit 7 for charging a battery 8. According to the constitution, danger of electric shock or production of dust due to sliding can be prevented.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging system for automatic guided vehicles and magnetic levitation transport devices.

0002

2. Description of the Related Art A conventional charging method for an automatic guided vehicle will be explained as an example. FIG. 2 shows the configuration of a conventional automatic guided vehicle.

[0003] In FIG. 2, a conventional automatic guided vehicle 1 has a current collecting terminal 10 for receiving power supply from the outside, and an electrode installed on a track to make electrical connection by contacting the current collecting terminal 10. 11, a spring 12 that presses the current collecting terminal 10 against the electrode 11, and a storage battery 8 that is a driving power source for the automatic guided vehicle 1.
It is composed of a power source 13 that supplies power to the storage battery 8 through the electrode 11 and the current collecting terminal 10, and a charging circuit 7 that charges the storage battery 8 with the power from the power source 13.

[0004] When charging the automatic guided vehicle, the current collecting terminal 10
The automatic guided vehicle 1 is stopped at a place where the electrode 11 comes into contact with the electrode 11,
A storage battery 8 was charged from a power source 13 via a charging circuit 7.

[0005]

[Problems to be Solved by the Invention] The charging method in the conventional automatic guided vehicles and magnetic levitation transport devices described above charges the storage battery by contacting the electrodes with the current collecting terminals. Since the terminal slides against the electrode,
There was a drawback that dust was generated.

Furthermore, since the electrodes are exposed, there is a risk of electric shock or a short circuit between the electrodes due to conductive objects.

[0007]

[Means for Solving the Problems] A first invention provides a charging system for an unmanned transportation device, which includes a primary coil through which an alternating current is passed from an alternating current power supply prepared in advance on the orbit of the unmanned transportation device; The unmanned conveyance device includes a primary iron core that generates an alternating magnetic field from an alternating current flowing through a coil, and the unmanned conveyance device includes a secondary iron core that is supplied with the alternating magnetic field from the primary iron core, and generates an alternating current by the alternating magnetic field flowing through the secondary iron core. A charging circuit rectifies the alternating current generated in the secondary coil and converts it into direct current, and a storage battery receives the direct current from the charging circuit and stores electricity. .

[0008]

Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.

As shown in FIG. 1, the charging method for the automatic guided vehicle 1 of this embodiment is to stop the automatic guided vehicle 1 at the location of the primary iron core 2 provided on the track of the automatic guided vehicle 1, and then remove the secondary iron core from the automatic guided vehicle 1. The moving mechanism 9 brings the secondary core 3 into contact with the primary core 2. In this case, a method may be adopted in which a slight gap is provided. Next, when an alternating current is supplied from the alternating current power supply 6 to the primary coil 4 side, the primary coil 4 generates an alternating current on the secondary coil 5 side by an alternating magnetic field via the primary iron core 2 and the secondary iron core 3. The generated alternating current is rectified in the charging circuit 7 and converted into direct current to charge the storage battery 8.

It goes without saying that the principles of the present invention can be similarly applied to magnetic levitation conveyance devices.

0012

[Effects of the Invention] As explained above, the charging method of the automatic guided vehicle of the present invention uses an AC magnetic field from the AC power source of the external primary core provided on the track through the secondary core of the automatic guided vehicle. By charging the car's storage battery, the iron cores can be either in contact with each other or fixed with a slight gap between them, so there is no dust generated by sliding.
Furthermore, since no current flows through the primary core provided on the track, there is no risk of electric shock or short circuit between electrodes due to conductive objects, which improves safety.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a charging method for an automatic guided vehicle according to the present invention.

FIG. 2 is a block configuration diagram showing an example of a charging method in a conventional automatic guided vehicle.

[Explanation of symbols]

1 Automatic guided vehicle 2 Primary iron core 3 Secondary iron core 4 Primary coil 5 Secondary coil 6 AC power supply 7 Charging circuit 8 Storage battery 9 Secondary core movement mechanism 10 Current collector terminal 11 Electrode 12 Spring 13 Power supply

Claims (1)

[Claims] 1. In a charging method for an unmanned conveyance device, an alternating current magnetic field is generated from the alternating current flowing through the primary coil and the alternating current flowing through the primary coil. The unmanned conveyance device includes a secondary iron core to which the alternating current magnetic field is supplied from the primary iron core, a secondary coil that generates an alternating current by the alternating current magnetic field flowing through the secondary iron core, and the secondary coil. A charging method for an unmanned transportation device, comprising: a charging circuit that rectifies the alternating current generated in the charging circuit and converts it into a direct current; and a storage battery that is supplied with the direct current from the charging circuit and stores electricity.