JPH0117331B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply device for supplying (charging) power to a built-in power source or the like of an electric vehicle.

In recent years, the price of gasoline, which is used as fuel for cars, has soared.
BACKGROUND OF THE INVENTION In a situation where exhaust pollution is becoming a problem, the development and popularization of vehicles that use electricity as a driving source (electric vehicles) is progressing.

The present invention provides a power supply device for supplying (charging) power to the built-in power source of such an electric vehicle, and is suitable for deployment in a parking lot or the like.

According to the present invention, a person (customer) requesting power supply reads a piece of information that he or she owns and supplies power, and power supply is permitted only if the information read from the information piece is worthy of power supply. It is possible to prevent unauthorized use of the device, and when the power supply is finished, the information piece is read again, and the information content actually read matches the information read when the power supply is started, that is, the customer who started the power supply. The information piece is returned when it is confirmed that the operation associated with the end of power supply is complete, so it is possible to prevent unauthorized operation of the power supply device by others, and to prevent power supply from electric vehicles. This provides a power supply device that can effectively prevent forgetting to remove a connector.

The illustrated embodiment will be described in detail below.

In Fig. 1, reference numeral 1 denotes a power supply device, which is installed on the ground G and has a power supply amount indicator 4 and a number of preset keys on the front surface 3' of an upper housing 3 supported by pillars 2 and 2' set up on both sides. 5, a speaker 6, a card reader 7, and a slip issuing port 8 are provided, and a control section 9, which will be described later, is housed inside. Inside the lower housing 10 is housed a reel 12 wound with a power supply cable 11 having a connector 13 attached to its tip.

The connector 13 is normally stored in the recess 14, that is, in the refueling standby position, and when necessary, it is pulled out and connected to a vehicle-side connector (not shown) that connects to the built-in power source of the electric vehicle 15, as shown by a two-dot chain line. do.

16 is a connector detector that detects that the connector 13 is housed in the recess 14 and outputs a connector detection signal K; 17 is a space provided between the upper housing 3 and the lower housing 10.

Next, the electric circuit will be explained according to FIG.

When the information reading circuit 19 of the card reader 7 reads an information piece (hereinafter referred to as a card) 18 on which a customer's unique number, etc., such as a credit card, is written, and outputs a signal a corresponding to the read information, The memory circuit 20 receives and stores the signal a, and also supplies the signal a to the determination circuit 21.

The determination circuit 21 determines the card 18 based on the signal a.
When it is determined that the card is a regular card and can be used, a refueling permission signal b is output. However, when it is determined that the signal is unusable, the signal b is not output and the signal c is instead output.
is output to the notification circuit 22.

The notification circuit 22 drives the speaker 6 by inputting the signal c to notify the customer that the card 18 cannot be used.

Further, when the determination by the determination circuit 21 is completed, the determination circuit 21 outputs a return signal i to the card return mechanism 28, and upon receiving this signal i, the card return mechanism 2
8 pushes the card 18 out of the card reader 7 and returns it to the customer.

The switch circuit 23 receives the input of the signal b and the output signal d of the connection state detector 13' provided in relation to the connector 13 (when the connector 13 is connected to the vehicle side connector, the connection state detection circuit 13' receives the signal d).
Output. ), the signal e is outputted and given to the power supply circuit 24.

In response to input of the signal e, the power supply circuit 24 converts the separately input commercial AC electricity P into the voltage necessary to power the electric vehicle 15 and supplies the power via the power supply measuring device 25 and the connector 13. will start. Here, as the connector 13, a self-locking type power supply connector as shown in Japanese Patent Application No. 56-020455 can be effectively used. This self-locking power supply connector is a type that uses a portion of the electric power flowing through the connector to excite a locking electromagnetic coil to maintain the connection between the electric vehicle side connector and the power supply device side connector in an irremovable manner. The connector cannot be disconnected until the power supply is stopped.

5 is a preset key, and the desired power supply amount is entered here.

The preset circuit 33 holds the keyed-in preset power supply amount and supplies the preset power supply amount to the comparator circuit 26 as a signal f.

The supplied power measuring device 25 counts the amount of supplied power sent from the power supply circuit 24 via the connector 13, and uses the counted value as a signal g to be sent to the display drive circuit 2.
The signal g is outputted to the comparator circuit 26 to be displayed numerically on the display 4 as the amount of power supplied.

The comparison circuit 26 compares the signal f and the signal g,
When both signals match, that is, when the amount of power currently being supplied matches the preset amount of power being supplied, signal h is output and the switch circuit 23
As a result, the signal e outputted from the switch circuit 23 disappears.

Since the power supply circuit 24 is configured to supply power only while the signal e is present, when the signal e disappears, the supply of power to the built-in power supply of the electric vehicle 15 via the connector 13 is stopped. However, only the excitation power (at a lower voltage than when power is supplied) necessary to excite the locking electromagnetic coil shown in Japanese Patent Application No. 56-020455 is supplied to the connector 30.

After the power supply ends, the customer causes the information reading circuit 19 of the card reader 7 to read the card 18 in his/her possession again. The information reading circuit 19 outputs a signal a' corresponding to the information actually read and supplies it to the storage circuit 20. The memory circuit 20 compares the previously stored signal a and the currently input signal a', and stores both signals a,
When a' matches, a signal j is output and given to the power supply circuit 24, thereby stopping the supply of power to the locking electromagnetic coil output from the power supply circuit 24, and connecting the connector 13 and the electric vehicle. It is possible to disconnect from the side connector. However, when signals a and a' do not match, signal j is not output.

Next, when the connector 13 is disconnected from the electric vehicle 15 and stored in the recess 14, the connector detector 16
detects that the connector 13 is stored, outputs a signal k, and operates the card return mechanism 28. That is, the card 18 is returned to the customer. or,
At the same time, the signal k energizes the recording device drive circuit 29 to take in the information (customer number, etc.) stored in the storage circuit 20 and the measured value (power supply information) of the power supply measuring device 25, and generate the power supply information signal m. output,
The printer 30 prints the information, and the slip is issued from the slip issuing port 8. On the other hand, the power supply information signal n is also output simultaneously with the power supply information signal m, and the above-mentioned power supply information is recorded on a magnetic tape (not shown) by the magnetic tape writer 32 and stored. Note that the signal k is also input to a delay circuit 31, which outputs a reset signal l after a sufficient time has elapsed since the input of the signal k to complete printing and recording in the printer 30 and magnetic tape writer 32. With this signal l, the preset circuit 33, the memory circuit 20, and the supplied power measuring device 25
to prepare for the next power supply.

Billing to the customer is accomplished by calculating the magnetic tape records.

Furthermore, even if the power supply is to be stopped before the preset amount of power has been supplied, the same method as described above can be used.

That is, by causing the card 18 to be read again by the information reading circuit 19 of the card reader 7 even during power supply, the read information, that is, the signal a', can be confirmed to be the signal a stored in the storage circuit 20. If they match, a signal j is output from the memory circuit 20, and all power supply to the connector 13 by the power supply circuit 24 (including the excitation power to the locking electromagnetic coil) is stopped. Note that 34 indicates a signal backflow prevention circuit.

With the configuration described in detail above, it is possible to prevent unauthorized power supply using an unauthorized card, that is, an invalid card, etc., and there is no fear that the power supply will be stopped without permission by someone other than the customer who started the power supply. Since the card is not returned until the end operation is completed, it is possible to completely prevent an accident in which a car receives power while the connector is connected and the cord is torn off.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the external shape of the power supply device, and FIG. 2 is a block diagram showing an electric circuit including a control section. DESCRIPTION OF SYMBOLS 1...Power supply device, 4...Display device, 5...Preset key, 6...Speaker, 7...Card reader, 9...Control unit, 12...Reel, 13...
Connector, 20... Memory circuit, 24... Power supply circuit, 25... Supply power measuring device, 26... Comparison circuit, 28... Card return mechanism.

Claims (1)

[Claims] 1. A means for reading the information written on the information piece owned by the customer, a means for storing the read information, and a determination as to whether or not this information is worthy of permission for power supply, and permission for refueling when it is determined to be worthy. a determination means for outputting a signal and a return signal; a return means for operating to return the information piece upon input of the return signal; a power supply connector; and a power supply means that starts supplying power to the connector on the condition that the refueling permission signal is generated,
The information piece is once returned at the start of power supply, and when the information piece is read next time, the information piece is returned on the condition that the current read information and the previous read information match and the connector detection signal is generated. A power supply device characterized by: