JP5778526B2 - Charging system - Google Patents

Description

  The present invention relates to a charging system, and more particularly, to a charging system that can appropriately deal with vehicles having different charging voltages and that can charge the vehicle with each voltage.

  In recent years, electric vehicles have become widespread, and charging systems for electric vehicles have been developed. In such a charging system, the vehicle is charged when the electric vehicle is parked in a parking lot.

  As a system for charging the battery of the vehicle, conventionally, for example, when the timer activation signal is input after the charging is completed, the temperature and voltage of the battery are measured and the measurement result is determined. A technique for setting a time to start supplemental charging and starting supplemental charging at that time is disclosed (for example, see Patent Document 1). Thus, by charging again immediately before the start of vehicle travel, the temperature of the battery can be increased, and the amount of electric power that can be extracted from the battery can be increased.

  The other charging system includes, for example, a charging unit that charges a driving battery mounted in each of a plurality of vehicles, and a control unit that controls the charging unit according to the battery state of each battery. The control means is configured to calculate each charge time according to each battery state, and based on a predetermined charge completion time of each battery and each charge time calculated by the first calculation means. A technique is disclosed that includes a second computing unit that calculates a charging start time of the battery, and a starting unit that starts charging by the charging unit at the charging start time calculated by the second computing unit. (For example, refer to Patent Document 2).

JP-A-8-098304 JP-A-8-116626

  However, in the techniques described in Patent Document 1 and Patent Document 2, predetermined charging completion time and auxiliary charging time are set, charging is performed according to the set time, and charging is terminated when the charging time is completed. To do. For this reason, when charging is terminated in a state where the charging current value is high, there is a problem that a switch for turning ON / OFF charging is damaged.

  Here, depending on the vehicle to be charged, when charging at a predetermined current value, there is one that sets a charging suspension period for holding the current value at a low value. Therefore, if the charging is terminated during this charging suspension time, the switch can be prevented from being damaged, but this charging suspension time varies depending on the vehicle to be charged, and the cycle of the charging suspension time is not necessarily limited. It is not constant.

  In addition, charging to the vehicle includes rapid charging by three-phase 200V and normal charging by AC 100V or double speed charging by AC 200V. When performing rapid charging by three-phase 200V, a control signal line to the vehicle side is used. Since it exists, it is possible to instruct the end of charging on the side of the charging control device, and it is possible to control the end of charging. However, in the case of normal charging with AC100V or double speed charging with AC200V, the control signal line cannot be secured, so the charging control unit cannot detect the charging stop time, and the charging ends during the charging stop time. There is a problem that control cannot be performed.

  The present invention has been made in view of the above points, and even when AC100V normal charging is performed, charging termination control can be performed according to the charging suspension time, and damage to the charging switch can be prevented. It is an object of the present invention to provide a charging system that can be surely prevented.

In order to achieve the above object, the present invention provides a charging system according to a first aspect of the present invention, a vehicle room installed in a parking lot where an electric vehicle can be parked,
A current detector for detecting a current value charged in the electric vehicle;
A charging control device that performs charging control on a vehicle that is installed in at least one and parked in the vehicle compartment,
The charging control device sets a monitoring period in response to the charging end timing, controls the charging when it is detected that the rest period by Ri charging current to the current detector is generated in said monitoring period to OFF It is characterized by that.

  According to a second aspect of the present invention, in the first aspect, the monitoring period by the charge control device is set before and after the charging end timing.

  According to a third aspect of the present invention, in the first or second aspect, the charge control device performs charge control based on a charge time set by a user, and the charge end timing is the charge time. It is set at the end of.

The invention according to claim 4 further includes a power switch for turning ON / OFF the energization of the vehicle according to any one of claims 1 to 3,
The charge control device, and controls the power switch when it detects that the rest period of the I Ri charging current to the current detector in said monitoring period has occurred to OFF.

According to the invention of claim 1, the charging control unit sets the monitoring period in response to the charging end timing, detects that the rest period of the current I Ri charging current detector in said monitoring period has occurred Since the charging is controlled to be OFF when the charging is performed, the charging end control can be performed during the downtime, and the power switch damage caused when the charging is turned OFF while a large charging current flows. Can be reliably prevented.

According to the invention of claim 2, since the to set over the front and rear of the charging end timing monitoring period by the charge control device, the monitoring period before and after the charging end timing, if the rest period of the charging current is generated In addition, the charging can be appropriately controlled to be OFF, and the power switch can be reliably prevented from being damaged.

  According to the third aspect of the invention, the charging control device performs charging control based on the charging time set by the user and sets the charging end timing at the end of the charging time. The charging end timing can be set based on the charged time.

According to the invention of claim 4, the charge control device, so as to control the OFF power switch when the rest period by Ri charging current to the current detector within the monitoring period is detected to be caused Therefore, the end control of charging can be performed by the OFF control of the power switch.

1 is a schematic configuration diagram illustrating an embodiment of a charging system according to the present invention. It is explanatory drawing which shows the change of the charging current in embodiment of the charging system which concerns on this invention. It is a flowchart which shows the charging operation in embodiment of the charging system which concerns on this invention. It is a flowchart which shows the electric power feeding operation | movement in embodiment of the charging system which concerns on this invention. It is explanatory drawing which shows the change of the charging current in embodiment of the conventional charging system.

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

  FIG. 1 is a schematic view showing an embodiment of a charging system according to the present invention. As shown in FIG. 1, the charging system according to the present embodiment is installed in a parking lot 2 in order to park a vehicle 1 that runs on battery power such as an electric vehicle. A plurality of vehicle compartments 3 are provided.

  Further, the charging system includes a distribution board 4 to which power of AC100V for normal charging or AC200V for double speed charging is supplied from an external power source (not shown). is set up. The charging system also includes a charging control device 6 installed in each vehicle compartment 3 of the parking lot 2, and the charging control device 6 is provided with a charging control unit 7 that performs various controls. Each charging control device 6 is provided with an outlet 9 into which a power plug 8 of the vehicle 1 parked in the passenger compartment is inserted. In the present embodiment, the outlet 9 is provided with a cover member 10 that covers the outlet 9, and the outlet 9 is closed by the control signal from the charging control unit 7. Is provided with a lock mechanism 11 for holding. The lock mechanism 11 holds the cover member 10 in a closed state in a state where the power plug 8 is inserted into the outlet 9. When the cover member 10 is not provided, the lock mechanism 11 may be configured by a mechanism that holds the power plug 8 inserted into the outlet 9 so as not to come off.

  Further, the charging control device 6 is provided with a power switch 12 electrically connected to the outlet 9, and the power switch 12 is a switch for opening and closing the connection with the power supply main line 13, and the distribution board 4 is connected via a leakage breaker 14. Further, the charging control device 6 is provided with a current sensor 15 as a current detector that detects a current value sent to the outlet 9 and sends it to the charging control unit 7. A voltage detection unit 16 that detects a voltage value to be supplied is provided.

  Furthermore, the charge control device 6 is provided with a key input unit 17 for making a charge reservation such as setting of a charge time, for example. The charge control unit 7 is connected to the charge time input by the key input unit 17. Based on this, the power switch 12 is configured to be turned on and off. When the power switch 12 is turned on, the power supply trunk line 13 and the outlet 9 are connected to supply power to the outlet 9. Furthermore, the charging control device 6 is provided with a display unit 18 that performs a predetermined guidance display such as charge acceptance, for example, and this display unit 18 is used for guidance such as confirmation operation or cancellation operation of guidance display, for example. Therefore, it is configured so that an operation can be performed. Further, the charge control device 6 is provided with a memory 19 and a timer 20.

  Moreover, in this embodiment, the vehicle 1 is provided with the vehicle control part 22 for performing charge control of the battery 21 mounted in the vehicle 1, and this vehicle control part 22 is shown in FIG. When power is supplied to the battery 21, a relatively small standby current flows during charging for a certain period of time immediately after the power supply, and then a relatively large charging current flows. It is configured to perform charging by controlling so as to provide a charging suspension period with a relatively small charging current.

  In the present embodiment, as shown in FIG. 2, the charging control unit 7 sets a monitoring period for monitoring the charging suspension period according to the charging end timing based on the charging time set by the key input unit 17. It is configured as follows. This monitoring period is set, for example, before and after the charging end timing, and the setting information of the monitoring period is stored in the memory 19. Specifically, the monitoring period is set to a monitoring period of ± 10 minutes with respect to the charging end timing. This monitoring period can be arbitrarily set, and the monitoring period may be set only before the end of charging with respect to the charging end timing, or the monitoring period may be set only after the end of charging. You may make it set. Then, the charging control unit 7 detects the value of the current flowing through the outlet 9 by the current sensor when charging, and controls the power switch 12 to be OFF when the charging suspension period is detected during the charging monitoring period. It is configured as follows.

  Next, the charging operation of this embodiment will be described with reference to the flowchart shown in FIG.

  In the present embodiment, first, the voltage detection unit 16 detects the power supply voltage (ST1), and if the voltage is not detected, the display unit 18 displays that charging is not possible (ST2). When a charge reservation is made by the key input unit 17 while the voltage is detected (ST3), the cover member 10 of the charge control device 6 is opened, and the charge plug of the vehicle 1 is inserted into the outlet 9. After that (ST4), confirmation of charging is selected according to the guidance display on the display unit 18 (ST5). Thereafter, the lock controller 11 is operated by the charge control unit 7 to lock the cover member 10 (ST6). When the lock is completed (ST7: YES), the power switch 12 is turned on to start power supply (ST8). . On the other hand, when the lock is not completed (ST7: NO), an abnormality indicating that the lock cannot be performed is notified (ST9).

  Next, the power feeding operation of the present embodiment will be described with reference to the flowchart shown in FIG.

  First, the power switch 12 is turned on for charging (ST20), and during charging, the current sensor 15 measures the feeding current value (ST21). When the monitoring period before the end of the charging end timing is reached by the timer 20 (ST22: YES), when the charging suspension period is detected (ST23: YES), the power switch 12 is controlled to be OFF ( ST24).

  As shown in FIG. 3, when charging is completed (ST10), the feeding current value is measured (ST11). When the current value becomes 0, the lock mechanism 11 of the cover member 10 is then released (ST12). When the user removes the power plug 8 (ST13), all charging operations are completed. Further, when the feeding current is 0 or more, an abnormality is notified that it cannot be turned off (ST14). If cancel is selected after the outlet 9 is connected (ST15), the power plug 8 is removed from the outlet 9, and charging is terminated (ST13).

  As described above, in the present embodiment, the power switch 12 is controlled to be turned off when the suspension period is detected in the monitoring period during charging. Therefore, normal charging with AC 100 V for normal charging is performed. Alternatively, even when performing double speed charging with AC 200V, it is possible to perform charging termination control during the charging suspension time, and the power switch 12 can be operated in a state where a large charging current flows as in the conventional case shown in FIG. As in the case where the power switch is turned off, the power switch 12 can be reliably prevented from being damaged.

  In addition, in the said embodiment, although the charging control apparatus 6 was installed in each compartment 3 of the parking lot 2, it controls overall the charging control apparatus for vehicle interiors installed in each compartment 3. A general charge control device may be installed, and the power switch 12 may be turned on and off by this general charge control device.

  The present invention is not limited to the above-described embodiment, and various modifications can be made based on the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Parking lot 3 Car compartment 4 Distribution board 6 Charge control apparatus 7 Charge control part 8 Power plug 9 Outlet 10 Cover member 11 Lock mechanism 12 Power switch 13 Power supply trunk 14 Earth leakage breaker 15 Current sensor 16 Voltage detection part 17 Key input unit 18 Display unit 19 Memory 20 Timer 21 Battery 22 Vehicle control unit

Claims (4)

A vehicle room installed in a parking lot where electric vehicles can be parked;
A current detector for detecting a current value charged in the electric vehicle;
A charging control device that performs charging control on a vehicle that is installed in at least one and parked in the vehicle compartment,
The charging control device sets a monitoring period in response to the charging end timing, controls the charging when it is detected that the rest period by Ri charging current to the current detector is generated in said monitoring period to OFF A charging system characterized by that.   The charging system according to claim 1, wherein the monitoring period by the charging control device is set before and after the charging end timing.   The charge control device performs charge control based on a charge time set by a user, and the charge end timing is set at the end of the charge time. 2. The charging system according to 2. A power switch for turning on and off the vehicle,
The charge control device claim 1, wherein the controller controls the power switch to OFF when the rest period of the current I Ri charging current detector in said monitoring period is detected to be caused The charging system according to claim 3.

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