JP2010148245A - Charger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a charger having a simple structure and for preventing the possibility of an unexpected electric shock caused by mischief. <P>SOLUTION: The charger for an electric vehicle for connecting an electric vehicle 2 to a charging power supply unit 1 to charge the electric vehicle 2 includes: a password authenticating section 4 having a password input portion 3; a normally open type switch section 6 for connecting and disconnecting a conduction path of a voltage line 5 of the charging power supply unit 1 and controlling conduction; and a power feed control section 7 for using the authentication of the password authenticating section 4 as a sufficient condition of closure of the switch section 6. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a charging device.

  As a charging device for charging an electric vehicle under the condition of authorization for use authority, the one described in Patent Document 1 is known. In this conventional example, a card recognition unit is provided in the charging device, and a connector connection detection unit is provided on the vehicle side.

When the charging device and the vehicle are connected via a charging cable during charging, a power supply request signal is output from the vehicle side and sent to the charging device via the communication unit. When the card is authenticated in the charging device in this state, the switch unit in the charging device is closed and power feeding is started.
JP 2007-228695 A

  However, in the above-described conventional example, there is a problem that communication between the vehicle and the charging device is necessary as a charging start condition. In order to solve this problem, it is possible to start power feeding only by the establishment of authentication in the charging device, but in this case, there are the following problems.

  In other words, since authentication is established simply by recognizing the card to the card recognition unit, as long as the card is held, infants and children can easily complete the authentication operation. The possibility of card recognition in the state where the lead wires are in contact cannot be denied, and there is a risk of electric shock associated therewith.

  The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide a charging device that has a simple structure and does not cause an electric shock accident due to mischief.

According to the present invention, the object is
An electric vehicle charging device for connecting an electric vehicle 2 to a charging power source 1 and charging the electric vehicle 2,
A password authentication unit 4 having a password input unit 3;
A normally open switch unit 6 for controlling energization by connecting / disconnecting the energization path of the voltage line 5 of the charging power source 1;
A power supply control unit 7 that makes the authentication establishment in the personal identification number authentication unit 4 a sufficient condition for closing the switch unit 6;
This is achieved by providing a charging device having

  In the present invention, the energization of the charging power source 1 is controlled by connecting and disconnecting the energization path of the voltage line 5 by the normally open switch section 6. By connecting / disconnecting the energization path of the voltage line 5, there is no electric shock even if the power supply output unit is touched in the path disconnection state, and the energization path is disconnected in the non-operating state. By using the normally open switch, it is possible to prevent an electric shock accident when the charging device is not used.

  In order to prevent electric shock, in the case of single-phase two-wire and three-wire 100-volt wiring, it is only necessary to connect / disconnect only the ungrounded wire. In single-phase three-wire 200-volt wiring, the switch section 6 is connected to two energization paths. Is installed.

  Further, in the present invention that requires the entry of a genuine password as a minimum condition for energization, it is possible to restrict unauthorized use of the charging device by a person who does not have authority to use, and in addition, electric shock caused by mischief of children, infants, etc. Accidents can be prevented. That is, as described above, if authentication with a card or the like is a condition for energization, it is not possible to prevent energization when a card taken out of mischief is used. Since the authentication act by mischief can be completely regulated, the electric shock accident by mischief can be completely prevented.

  The charging device may be one in which the charging cable 8 is connected in advance or may be used by inserting the charging cable 8 prepared by the user. In the latter case, the switch unit 6 The energization path to the voltage line terminal of the outlet 9 is configured to be connected / disconnected.

  In this case, a connection detection unit 10 that detects the connection of the charging cable 8 to the outlet 9 is provided, and the personal identification number authentication unit 4 is activated on the condition that the connection detection unit 10 detects the connection of the charging cable 8. If comprised, the mischief etc. to the PIN code authentication part 4 can also be prevented.

  According to the present invention, since charging can be performed without requiring communication with a vehicle, the structure is simplified, and an electric shock accident due to mischief when not in use can be reliably prevented.

  As shown in FIG. 1, the charging device includes an outlet 9 for connecting a plug 8 a of the charging cable 8, a power supply control unit 7 that operates under the control of the control unit 11, a personal identification number authentication unit 4, and a control unit. 11 includes a connection detection unit 10 connected to the terminal 11. The connection detection unit 10 is formed of, for example, a mechanical switch, and when the connection of the charging cable 8 to the outlet 9 is detected, the connection detection unit 10 notifies the connection state by lowering the potential of the predetermined port of the control unit 11 to the reference potential.

  Among the energization paths connecting the outlet 9 and the charging power source 1, a relay (switch unit 6) is interposed in the energization path of the voltage line 5, and the relay 6 is operated to move the charging power source 1 to the outlet 9. Can be started and stopped.

  The personal identification number authentication unit 4 includes a personal identification number input unit 3, a collation unit 4a, and a storage unit 4b that stores a personal identification number preset by a user. The personal identification number authentication unit 4 is activated by receiving a connection signal from the connection detection unit 10 of the control unit 11, and when an appropriate number is input from the personal identification number input unit 3, the personal identification number input by the verification unit 4a and the storage unit The password number in 4b is collated.

  When the collation in the collation unit 4a is successful, an authentication establishment signal is output to the control unit 11, and the control unit 11 that has received the authentication establishment signal sets a switch drive signal in the power supply control unit 7, and the normally open relay 6 Is driven to close the circuit.

  On the other hand, the electric vehicle 2 can charge the battery 13 by receiving power from the power receiving unit 12 to which the charging plug of the charging cable 8 or the vehicle side wiring connector 8b such as a paddle is connected. Between the power receiving unit 12 and the battery 13, an AC / DC conversion or the like is performed, and a charging circuit 14 for adjusting the amount of power supply to prevent overcharging is interposed.

  The control unit 15 that controls the charging circuit 14 is provided with a connection detection unit 16 that detects the connection of the vehicle-side wiring connector 8b to the power reception unit 12. If the connection detection unit 16 does not detect a stable connection state, the control unit 15 maintains the input terminal of the charging circuit 14 in a high impedance state, or disconnects the input circuit, for example, The battery 13 is protected.

  FIG. 2 shows an operation flow of the charging device. First, at the start of operation, initial setting such as a potential set for each port of the control unit 11 is performed (step 100), and the output of the connection detection unit 10 is monitored (step 101).

  When it is confirmed in step 101 that the plug 8a of the charging cable 8 is connected to the outlet 9, the password authenticating unit 4 is activated and transitions to a password input waiting mode from the password input unit 3 (step 1). 102). The password input waiting mode is maintained only when the charging cable 8 is connected to the outlet 9, and when the connection detecting unit 10 detects the disconnection of the charging cable 8 in this mode (step 103), the process returns to the initial routine. To do.

  In step 103, it is confirmed that the PIN number input waiting mode is continued, and when the PIN number is input (step 104), verification in the verification unit is performed (step 105). When authentication is established, the switch unit 6 is closed. Power supply is started (step 106).

  The power supply operation is performed until the connection detection unit 10 detects the disconnection of the charging cable 8. When the connection detection unit 10 detects the disconnection of the charging cable 8 (step 107), the control unit outputs a signal output to the power supply control unit 7. Stop and open the switch unit 6 to end the power supply (step 108).

  In the above, the case where the connection of the charging cable 8 in the connection detection unit 10 is used as the activation switch of the password authentication unit 4 has been described. However, the password authentication unit 4 is always in the activated state and the password authentication is performed. It can also be configured to confirm the connection of the charging cable 8 at the connection detecting unit 10 when the authentication at the unit 4 is established.

It is a functional block diagram which shows this invention. It is a figure which shows the operation | movement flow of a charging device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Charging power supply 2 Electric vehicle 3 Security code input part 4 Security code authentication part 5 Voltage line 6 Switch part 7 Power supply control part 8 Charging cable 9 Outlet 10 Connection detection part

Claims (3)

An electric vehicle charging device for charging an electric vehicle by connecting the electric vehicle to a charging power source,
A password authentication unit having a password input unit;
A normally-open switch that connects and disconnects the energization path of the voltage line of the power supply for charging and controls energization;
A power supply control unit that makes the authentication establishment in the personal identification number authentication unit a sufficient condition for closing of the switch unit;
A charging device. Equipped with an outlet to connect one end of the charging cable connected to the electric vehicle,
The charging device according to claim 1, wherein the switch unit connects and disconnects an energization path to a voltage line terminal of an outlet. It has a connection detector that detects the connection of the charging cable to the outlet.
The charging device according to claim 2, wherein the personal identification number authenticating unit is activated on condition that the connection detecting unit detects the connection of the charging cable.

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