JPH09107605A - Charging system for electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging system of an electric vehicle which can prevent another person from touching the charging system during the charging of the electric vehicle to perform an unfair practice. SOLUTION: When a charging operation is applied to an electric vehicle EV, an unlatching switch 27 of a warning circuit is closed. Even though a water- proof door 22 of a charging box 20 is opened by another person in the course of charging, since a door switch 25 of the warning circuit performs ON- operation, a relay coil 32 is excited. Receiving this excitation, a relay switch 33 is closed for a door chime 14 to be rung. Also, when a power feeding connector 30 is touched in the course of charging, since a touch sensor is operated for a sensor switch 31 to be switched on, the door chime 14 is rung similarly to the foregoing case.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a charging system for charging an electric vehicle.

[0002]

2. Description of the Related Art Various charging systems have been considered in recent years because relatively frequent charging is essential for electric vehicles. For example, as a system for charging electric vehicles owned by ordinary households, a charging box is installed near the garage outdoors, and when charging an electric vehicle parked in the garage, a power cable is connected to the charging box. At the same time, the power supply connector provided at the tip of the power cable is connected to the power receiving connector of the electric vehicle to turn on the power switch of the charging box.

[0003]

By the way, if an electric vehicle is to be charged at home, it is necessary to secure a relatively long charging time due to the current capacity of electric equipment.
For example, there may be a case where the electric vehicle has to be left outdoors in a charged state at night. In such a charging mode, since the charging box and the power supply connector can be easily touched by others, for example, an extension cable can be connected to the power supply connector to charge the electric vehicle without permission, or the charging box can be arbitrarily opened. There is a point to be improved in crime prevention, such as the possibility that the battery may be operated to end charging.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric vehicle charging system capable of preventing another person from touching the charging system and performing an illegal act while charging the electric vehicle. To do.

[0005]

Means for Solving the Problem and Its Action / Effects <Invention of Claim 1> The invention of Claim 1 is a power supply unit connected to a charging power source through a power cable to a power receiving unit provided in an electric vehicle. In order to charge the power battery by setting the alarm, a crime prevention switch that detects the operation of the charging power source and the contact of a person to the power supply unit, and an alarm circuit that outputs an alarm signal based on the operation of the crime prevention switch It has a feature in that and are provided.

According to this structure, when the charging power source is operated or a person touches the power supply unit, this is detected by the crime prevention switch and an alarm signal is output based on the operation thereof, so that the electric vehicle can be seen. Even if you are parked in a place where there is no charge and you are charging, you can immediately warn of the abnormal situation,
The effect of preventing fraud can be obtained.

<Invention of Claim 2> According to the invention of Claim 2, in the invention of Claim 1, an alarm for disabling a locking device and an alarm circuit when the locking device is unlocked by a regular key. It is characterized in that a release circuit is further provided.

According to this structure, the alarm circuit becomes inoperable by unlocking the lock device with the normal key, so that the alarm signal is not output in response to the operation by the normal user. can do.

<Invention of Claim 3> The invention of Claim 3 is characterized in that, in the invention of Claim 2, the key for unlocking the locking device is a key for driving an electric vehicle.

According to this, there is an advantage that it is not necessary to carry two kinds of keys because the alarm circuit can be disabled by using the key necessary for driving the electric vehicle.

<Invention of claim 4> The invention of claim 4 is the invention of any one of claims 1 to 3, wherein the doorbell device of the house is activated by an alarm signal from an alarm circuit. It has characteristics.

According to this, the alarm can be issued by using the doorbell device normally installed in the house.
There is no need to install an alarm device such as a buzzer,
The advantage is that the cost can be reduced.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing an installation form of a general garage. A fence 11 is provided around the house H,
The gate 12 leading to the entrance of the house H is provided with a push button switch 13 of a well-known doorbell device, and when the push button switch 13 is turned on, the door chime 14 rings. A garage 15 is provided adjacent to the house H, and is separated from the road by a fence 11 and a gate 16.

The garage 15 is connected to the doorway 17 of the house H,
A charging box 20 is attached to the outer side of the free hand opening 17. As shown in FIGS. 2 and 3, the charging box 20 has a waterproof door 22 that can be opened and closed on the front surface of a main body case 21, and a handle 2 provided on the waterproof door 22.
It can be opened and closed by 2a. A charging switch 23 and a charging outlet 24 connected to a charging power source (not shown) are provided in the charging box 20, and the waterproof door 2 is provided.
A door switch 25 and a lock device 26, which are equivalent to a crime prevention switch that detects the opening of 2 and is turned on, are provided. The lock device 26 can be locked and unlocked by the operation key K of the electric vehicle V parked in the garage 15. When unlocked, the unlock switch 27 (shown only in FIG. 4) is turned on. To do.

A plug 29 of a power cable 28 can be connected to the charging outlet 24, and a power supply connector 30 connected to a power receiving connector (not shown) of the electric vehicle V is provided at the tip of the power cable 28. Has been.
This charging connector 30 is provided with a charging connector 30 during charging.
A touch sensor for detecting contact of a person is built into the body of the sensor, and when the contact of the person is detected, the sensor switch 31 (illustrated only in FIG. 4) corresponding to the crime prevention switch is turned on.

The electrical construction of the main part of this embodiment is as shown in FIG. A sensor switch 31, an unlock switch 27 and a relay coil 32 are connected in series between the power supply lines L1 and L2, and a door switch 25 is connected in parallel to the sensor switch 31. The relay switch 33 is turned on when the relay coil 32 is excited and outputs an alarm signal, and is connected in parallel with the push button switch 13 of the doorbell device described above. Of these, the switch circuit including the sensor switch 31 and the door switch 25 constitutes an alarm circuit that outputs an alarm signal based on the operation of each of the switches 31 and 25, and the series circuit including the unlocking switch 27 is the above alarm. It functions as an alarm release circuit that disables the circuit.

Next, the operation of the above configuration will be described.
To charge the electric vehicle V parked in the garage 15, the waterproof door 22 of the charging box 20 is opened and the power cable 28 is used.
Plug 29 into the charging outlet 24, and the power feeding connector 30 is fitted and connected to the power receiving connector of the electric vehicle V. Then, with the driving key K of the electric vehicle V, the lock device 2
Lock 6 and turn on the charging switch 23 to turn on the waterproof door 2
Close 2. With this, the electric vehicle V is charged. In this state, the locking device 26 is locked and the unlock switch 27 is closed, but both the sensor switch 31 and the door switch 25 are off, so the relay coil 32 is cut off and the relay coil 32 is disconnected. The switch 33 is opened and the door chime 14 does not ring.

After the charging is completed, the lock device 26 is unlocked by the driving key K of the electric vehicle V, the waterproof door 22 is opened, the charging switch 23 is turned off, and the plug 29 of the power cable 28 is charged. The power supply connector 30 may be removed from the outlet 24 and the power supply connector 30 may be disconnected from the power reception connector of the electric vehicle V.

Now, assume that while the electric vehicle V is being charged, another person should enter the garage 15 and open the waterproof door 22 of the charging box 20. Then, since the door switch 25 is turned on based on this, the relay coil 32 is excited and the relay switch 33 is closed, and the door chime 14 rings. As a result, it is notified that another person has operated the charging system of the electric vehicle without permission, and thus illegal activities can be prevented.

If a person who has entered the garage 15 touches the power supply connector 30 in order to remove it, the touch sensor operates and the sensor switch 31 turns on.
After all, the relay coil 32 is excited and the door chime 14
Sounds and this is notified to prevent illegal activities.

As described above, according to this embodiment, the waterproof door 22 of the charging box 20 is opened and the power supply connector 30 is provided.
When a person touches, the door switch 25 or the sensor switch 31 is actuated based on this, and an alarm signal is output based on the actuation. Therefore, the electric vehicle V is parked and charged in a place where the eyes of the householder cannot reach. Even so, it is possible to immediately warn of the abnormal situation and to prevent fraudulent activity. Further, particularly in the present embodiment, the lock device 2
When 6 is unlocked, the unlock switch 27 is turned off and the relay switch 33 is always turned off. Therefore, when the end operation is performed at the time when charging is completed, it is sure that the door chime 14 will ring unexpectedly. It can be prevented and is convenient. Moreover, the lock device 26 can be unlocked by the driving key K of the electric vehicle V, and by unlocking the lock device 26, it is possible to prevent the alarm release circuit from activating and ringing a useless alarm, which improves usability. This is more convenient because it is not necessary to hold two types of keys, that is, the driving key K of the electric vehicle V and the charging operation key. Furthermore, particularly in this embodiment, when the relay switch 33 is turned on and an alarm signal is output,
Door chime of doorbell device originally installed in the house 14
Since the alarm sounds, no special alarm device is required and the cost can be reduced.

<Other Embodiments> The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the following, various changes can be made without departing from the scope of the invention.

(1) In the above embodiment, the charging box 2
Although the lock device 26 that can be locked and unlocked by the driving key of the electric vehicle V is provided in 0, the present invention is not limited to this, a key dedicated to the charging system may be used, and a keyboard is provided in the charging box. A so-called electronic lock device may be provided for determining whether or not the number or character input to is matched with the combination stored in advance.

(2) A cord reel may be installed in the charging box 20, and a power cable for charging may be pulled out from the cord reel for use.

(3) Also, the charging is not limited to connecting the power feeding connector 30 provided at the tip of the power cable 28 to the power receiving connector of an electric vehicle, and for example, a primary induction coil is provided at the tip of the power cable. It is also possible to set this in a secondary induction coil for power reception of an electric vehicle and supply electric power to the electric vehicle side by an electromagnetic induction method.

(4) Further, the charging box 20 may be configured to lock the door with a locking device.

[Brief description of the drawings]

FIG. 1 is a plan view showing an installation form of a garage.

FIG. 2 is a perspective view of a charging box showing an embodiment of the present invention.

FIG. 3 is a perspective view of the charging box with the waterproof door also opened.

FIG. 4 is a circuit diagram showing the electrical configuration of the alarm circuit.

[Explanation of symbols]

 14 ... Door chime 20 ... Charging box 22 ... Waterproof door 23 ... Charging switch 25 ... Door switch 26 ... Lock switch 27 ... Unlock switch 30 ... Power supply connector 31 ... Sensor switch 32 ... Relay coil 33 ... Relay switch

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location H02J 7/00 301 H02J 7/00 301B 301Z

Claims (4)

[Claims] 1. A charging system for charging a power battery of an electric vehicle by setting a power supply section connected to a charging power source via a power cable in a power receiving section provided in the electric vehicle, wherein: A charging system for an electric vehicle, comprising: a crime prevention switch that detects an operation or a contact of a person with the power supply unit, and an alarm circuit that outputs an alarm signal based on the operation of the crime prevention switch. 2. The electric vehicle according to claim 1, further comprising a lock device and an alarm release circuit for disabling the alarm circuit when the lock device is unlocked by a regular key. Charging system. 3. The charging system for an electric vehicle according to claim 2, wherein the key for unlocking the lock device is a driving key for the electric vehicle. 4. The charging system for an electric vehicle according to claim 1, wherein a doorbell device of a house is activated by an alarm signal from the alarm circuit.