JP6110071B2 - Vehicle charging system - Google Patents

Description

  The present invention relates to a vehicle charging system, and more particularly to a vehicle charging system capable of detecting charging abnormality and stopping charging when the charging abnormality occurs, thereby improving safety. It is about the system.

  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.

  And when charging with respect to the battery of a vehicle, the completion | finish control of charging is performed. Conventionally, as a technique for performing such charge termination control, for example, charging means for charging driving batteries respectively mounted on a plurality of vehicles, and control for controlling the charging means in accordance with the battery state of each battery. Means for calculating each charging time according to each battery state, a predetermined charging completion time of each battery, and each charging calculated by the first calculating means. And a second calculating means for calculating the charging start time of each battery based on the time and a starting means for starting charging by the charging means at the charging start time calculated by the second calculating means, respectively. A technique is disclosed (for example, see Patent Document 1).

JP-A-8-116626

  However, in the technique described in Patent Document 1, it is possible to perform charging control based on the charging time. For example, a plug for charging may be disconnected from the outlet during charging, For example, when the current stops flowing to the battery of the vehicle, there is a problem that even if the charging is continued without being noticed, the charging cannot be performed properly. In addition, for example, if a current is flowing while the charging plug is disconnected, there is a risk that an electric shock may occur if a user accidentally touches an outlet or the like, which is dangerous. Yes.

  The present invention has been made in view of the above points, and can detect a charging abnormality and can stop charging when a charging abnormality occurs, thereby improving safety. The object is to provide a charging system.

In order to achieve the above object, the present invention provides a charging system for a vehicle according to a first aspect of the present invention, wherein a charging control unit is provided in a parking lot and performs charging control for a parked vehicle, and a power supply side to which power is supplied. A connection detector for detecting a connection between the connector and the power receiving side connector of the vehicle, a current sensor for measuring a current value flowing through the power feeding side connector, and a voltage value supplied to the power feeding side connector A charge sensor, and the charge controller is configured to make a charge reservation after the vehicle detected by the vehicle sensor is locked by a lock device provided in a passenger compartment. After the reservation is made, when checking the lock completion by the lock mechanism that holds the power receiving side connector connected to the power supply side connector, charging is performed when it is determined that there is an abnormality by the lock mechanism. Na It is characterized in.
According to a second aspect of the present invention, in the first aspect, the charge control unit is configured to determine a connection state of the power supply side connector in the connection detector, a current value in the current sensor, and a voltage value in the voltage sensor. Charging is not performed when it is determined that an abnormality has occurred based on any of the detection results.
According to a third aspect of the present invention, in the first or second aspect, the charge control unit is provided corresponding to the plurality of vehicle compartments, and performs charge control for vehicles parked in the plurality of vehicle compartments. Each vehicle compartment side control unit that includes a plurality of vehicle compartment side control units and a charge control unit connected to the plurality of vehicle compartment side control units, and that constitutes the plurality of vehicle compartment side control units, The connection detector, the current sensor, and the voltage sensor respectively provided corresponding to the transmission sensor are respectively transmitted to the charge control unit, and the charge control unit receives from the plurality of compartment side control units. When it is determined that an abnormality has occurred based on the signal, the vehicle parked in the corresponding passenger compartment is not charged.
According to a fourth aspect of the present invention, in the third aspect of the present invention, a plurality of charging abnormalities are displayed when it is determined that an abnormality has occurred by the charging control unit. The charging display unit is further provided.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the charging control unit does not start charging when an abnormality occurs at the start of charging.

A sixth aspect of the present invention is characterized in that, in any one of the first to fifth aspects, the charging control unit stops charging when an abnormality occurs during charging.
The invention according to claim 7 is the charge control unit according to any one of claims 1 to 6, wherein the charge control unit determines whether there is an abnormality in the connection state of the power supply side connector in the connection detector, When it is determined that there is no abnormality, the current value at the current sensor and the voltage value at the voltage sensor are determined to be abnormal. When it is determined that there is no abnormality, charging is started or continued. It is characterized by doing.

The invention according to claim 8 is the charge control unit according to any one of claims 1 to 7 , wherein the current value detected by the current sensor at the start of charging or during charging is out of a certain range. In this case, it is judged that it is abnormal .

The invention according to claim 9 is the charge control unit according to any one of claims 1 to 8 , wherein the voltage control unit detects that the voltage value detected by the voltage sensor at the start of charging or during charging is out of a certain range. In this case, it is judged that it is abnormal.

The invention according to claim 10, in any one of claims 1 to 9, the pre-Symbol charging control unit, and wherein the locking mechanism if it can not lock properly, it is determined to be abnormal To do.

The invention according to claim 11, in claim 10, further comprising a closable cover member that can cover the front Symbol feeding side connector, the locking mechanism is to hold the cover member in the closed state It is characterized by that.

According to the first aspect of the invention, the charging state is monitored by the charging control unit , and control is performed so that charging is not performed when an abnormality occurs during charging control. It can be surely prevented, and safety can be significantly increased.

According to the invention according to claim 5 , since charging is not started when an abnormality occurs at the start of charging by the charging control unit , charging when an abnormality occurs before starting charging is prevented, Safety can be significantly increased.

According to the invention of claim 6 , since the charging control unit is configured to stop charging when an abnormality occurs during charging, the charging when an abnormality occurs during charging is prevented, Safety can be significantly increased.

According to the eighth aspect of the present invention, when the current value detected by the current sensor at the start of charging by the charging control unit is equal to or less than a predetermined value, it is determined that there is an abnormality. Safety can be significantly improved.

According to the ninth aspect of the present invention, when the voltage value detected by the voltage sensor by the charge control unit is equal to or less than a predetermined value, it is determined that there is an abnormality. Can be significantly increased.

According to the invention according to claim 10, in a state of connecting the power-receiving-side connector to supply electric side connector, a locking mechanism for holding such power receiving connector does not come off provided, normally the locking mechanism by the charging control unit Since it is determined that there is an abnormality when it cannot be locked, it is possible to significantly improve safety by determining the locking abnormality caused by the power supply side connector.

According to the invention of claim 11, a cover member for covering the supply electric side connector openably Since so as to hold the cover member in the closed state by the locking mechanism, the locking mechanism by the charging control unit When the cover member cannot be normally locked, it is determined that the cover member is abnormal. Therefore, it is possible to determine the lock abnormality caused by the power supply side connector and to significantly increase the safety.

It is a schematic structure figure showing an embodiment of a charge system for vehicles concerning the present invention. It is a front view which shows the account machine in embodiment of the charging system for vehicles which concerns on this invention. It is a schematic block diagram which shows the control structure in embodiment of the charging system for vehicles which concerns on this invention. It is a flowchart which shows the operation | movement in embodiment of the charging system for vehicles which concerns on this invention.

  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 vehicle charging system according to the present invention. As shown in FIG. 1, the charging system for vehicles of this embodiment is installed in the parking lot 2 for parking the vehicle 1 which drive | works with the electric power of batteries, such as an electric vehicle, for example, This parking lot In 2, a settlement machine 3 is installed. In addition, the parking lot 2 includes a plurality of vehicle compartments 4, and each vehicle compartment 4 is provided with a charging pole 5 for charging the vehicle 1. The parking lot 2 includes, for example, A lock device 6 for locking the parked vehicle 1 is installed in each vehicle compartment 4 of the parking lot 2.

  In the present embodiment, the settlement machine 3 and each charging pole 5 are serially connected via a charge control line 7, and the settlement machine 3 and each lock device 6 are serially connected via a lock control line 8. It is connected to the. Furthermore, the vehicle charging system according to the present invention includes a distribution board 9 to which power from an external power source (not shown) is supplied, and supplies power to the settlement machine 3 and the charging pole 5 from the distribution board 9. Is configured to do. The distribution board 9 and each charging pole 5 are serially connected via a power line 10.

  In addition, as shown in FIG. 2, a key input unit 11 for performing a predetermined operation and a display unit 12 for performing a predetermined display are provided on the front of the settlement machine 3. A coin insertion slot 13, a bill insertion slot 14, and a return slot 15 for returning changes, receipts, and the like are provided.

  Next, the control configuration of the present invention will be described with reference to FIG.

  In the present embodiment, a control board 17 on which a control unit 16 for performing various controls is mounted is housed in the checkout machine 3. A memory 18 for storing information and the like, and a timer 19 for measuring parking time, charging time and the like are provided.

  Further, the settlement machine 3 is provided with a key input unit 11 for a user of the parking lot 2 to perform operations such as accepting a charge reservation, and the settlement machine 3 has a display unit 12 for performing a predetermined display. Is provided. Further, the settlement machine 3 is provided with a printer unit 20 for performing predetermined printing such as a receipt. The settlement machine 3 is provided with a card processing machine 21 for supplying a predetermined card to the printer unit 20. Is provided.

  Further, the settlement machine 3 is equipped with a charge control unit 22, and when the user operates the key input unit 11 to make a charge reservation, the charge control unit 22 is based on a control signal from the control unit 16. 22, the charging control of each charging pole 5 is performed.

  In the present embodiment, the control unit 16 operates when the user of the parking lot 2 operates the key input unit 11 to input the vehicle compartment number to make a charge reservation. And the charging acceptance information is stored in the memory 18 as a charging list. Then, the control unit 16 is configured to read the vehicle compartment number to be charged from the charge list stored in the memory 18 and to output a charge control signal of the vehicle compartment number information to the charge control unit 22. Has been.

  Each vehicle compartment 4 is provided with a vehicle sensor (not shown), and the control unit 16 is configured to receive a detection signal of the vehicle 1 by the vehicle sensor. The control unit 16 is configured to raise the lock device 6 to lock the vehicle 1 when a detection signal of the vehicle 1 from the vehicle sensor is input.

  Each charging pole 5 is provided with a passenger compartment control unit 23 for performing various charging controls. Further, the charging pole 5 is provided with a vehicle compartment side communication unit 24 for performing communication with the charge control unit 22. The vehicle compartment side communication unit 24 and the charge control unit 22 are connected to the charge control line 7. Connected through.

  Each charging pole 5 is provided with an outlet 26 as a power feeding side connector into which a power plug 25 as a power receiving side connector of the vehicle 1 parked in the passenger compartment 4 is inserted. In the present embodiment, a cover member 27 that covers the outlet 26 portion is provided at the outlet portion 26, and the cover member 27 is closed at the outlet portion 26 by a charge control signal from the charge control unit 22. A lock mechanism 28 is provided for maintaining the state. The lock mechanism 28 holds the cover member 27 in a closed state when the power plug 25 is inserted into the outlet 26. When the cover member 27 is not provided, the lock mechanism 28 may be configured by a mechanism that holds the power plug 25 inserted into the outlet 26 so as not to come off.

  Further, each charging pole 5 is provided with a connection detector 34 for detecting that the power plug 25 is inserted into the outlet 26. As the connection detector 34, for example, the power plug 25 is connected to the outlet 26. There are mechanical switches that are turned on when inserted.

  In addition, the charging pole 5 includes a charging display unit including an LED or the like for indicating a charging state by the charging pole 5, for example, “charging”, “charging reservation”, “charging end”, “charging abnormality”, etc. 29 is provided, and the charge pole 5 is provided with a current sensor 30 and a voltage sensor 31, respectively.

  Further, the charging pole 5 is provided with a power switch 32 electrically connected to the outlet 26. The power switch 32 is a switch that opens and closes the connection with the power supply line 10, and the power supply line 10 from the distribution board 9 is connected via a leakage breaker 33. Further, the passenger compartment control unit 23 is configured to turn on the power switch 32 based on a charge ON signal sent from the charge control unit 22 via the passenger compartment communication unit 24. When the power switch 32 is turned ON, the power line 10 and the outlet 26 are connected to supply power to the outlet 26.

  The voltage sensor 31 and the current sensor 30 are configured to detect the voltage value and the current value sent to the outlet 26 and send them to the passenger compartment control unit 23. When the set charging time has elapsed or when the current value of the current sensor 30 has become equal to or less than a predetermined value, the power switch 32 is configured to be turned off as being charged. As a result, the power line 10 and the outlet 26 are disconnected, and power is not supplied completely. When the charging is completed, the passenger compartment control unit 23 transmits a message to that effect to the charging control unit 22, and the charging control unit 22 notifies the control unit 16 of the completion of charging. Based on the charging list, the control unit 16 sends a control signal to the charging control unit 22 so that the other vehicle compartment 4 having another charging request can be charged, and charging performed by the charging control unit 22 is performed. The pole 5 is controlled to be switched sequentially.

  Further, in this embodiment, when the voltage value by the voltage sensor 31 and the current value by the current sensor 30 of the charging pole 5 are sent to the passenger compartment control unit 23, the voltage value and the current value are out of the fixed value range. In this case, the charging is determined to be abnormal. As described above, when the voltage value and the current value are out of the fixed value range, it is determined that the charging is abnormal. For example, when the voltage value is higher than the fixed value range, there is a failure of the power supply or wiring abnormality. This is because, when the voltage value is lower than a certain value range, occurrence of a short circuit, power supply failure, wiring abnormality, poor contact, etc. are considered. Also, if the current value is higher than the fixed value range, there may be a short circuit or a failure of the charging part on the vehicle side. If the current value is lower than the fixed value range, This is because there is a possibility that the cable is not connected, wiring abnormality, poor contact, or the like.

  Further, the passenger compartment side control unit 23 is configured to determine whether or not the power plug 25 is normally inserted into the outlet 26 based on the detection signal of the connection detector 34. When 25 is not inserted normally, it is configured to determine that it is abnormal. Further, the passenger compartment side control unit 23 is configured to determine whether or not the cover member 27 of the lock mechanism 28 is normally locked. The passenger compartment side control unit 23 is configured to determine whether or not the cover member 27 of the lock mechanism 28 is locked. Is configured to determine that it is abnormal when it cannot be locked normally.

  When the vehicle compartment side control unit 23 determines that the vehicle side control unit 23 is abnormal due to the abnormality in the voltage value and current value, the connection failure of the outlet 26, and the lock abnormality of the cover member 27, A charging abnormality signal is transmitted to the checkout machine 3. The charging control unit 22 controls not to start charging when an abnormal signal is sent before starting charging, and controls to stop charging when an abnormal signal is sent during charging. . In this case, the passenger compartment control unit 23 of the charging pole 5 is configured to display “charging abnormality” on the charging display unit 29.

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

  In the present embodiment, first, when it is detected by the vehicle sensor that the vehicle 1 is parked in the predetermined compartment 4 (ST1), the control device 16 raises the lock device 6 to lock the vehicle 1 (ST2). ). On the other hand, when the user of the parking lot 2 wishes to charge the vehicle 1 (ST3: YES), the user opens the cover member 27 of the charging pole 5 and inserts the charging plug of the vehicle 1 into the outlet 26. Thereafter, the cover member 27 is closed.

  Thereafter, in the checkout machine 3, the key input unit 11 is operated to input the number of the passenger compartment 4 in which the vehicle 1 to be charged is parked and the number of the charging pole 5, and to charge the passenger compartment number. A reservation is input (ST4). When this charge reservation is made, the vehicle compartment side control unit 23 determines whether or not the power plug 25 is normally inserted into the outlet 26 based on the detection signal of the connection detector 34 (ST5). If the power plug 25 is not properly inserted (ST5: NO), it is determined that the power plug 25 is abnormal, and “charging abnormality” is displayed on the charging display portion 29 of the charging pole 5 (ST15), and charging control is performed. Charging is not started by the unit 22 (ST16). On the other hand, when the power plug 25 is normally inserted, the lock mechanism 28 is operated by the passenger compartment side control unit 23 to lock the cover member 27 (ST6).

  When the lock of the lock mechanism 28 is completed (ST7: YES), a charge ON signal is sent from the charge control unit 22 to the passenger compartment side control unit 23, and the passenger compartment side control unit 23 turns on the power switch 32. Operate and supply power to outlet 26. Here, when the lock of the cover member 27 is not completed (ST7: NO), it is determined that there is an abnormality, and “charging abnormality” is displayed on the charging display portion 29 of the charging pole 5 (ST15), and charging is performed. Control is performed so as not to start charging by the control unit 22 (ST16).

  Further, in the present embodiment, when power is supplied, the voltage sensor 31 detects the power supply voltage, and when the voltage value is outside the range of a certain value (ST8: YES), it is determined to be abnormal. Then, “charging abnormality” is displayed on the charging display section 29 of the charging pole 5 (ST15), and the charging control unit 22 controls not to start charging (ST16). In addition, when the feeding current is detected by the current sensor 30 and the current value is outside the range of the constant value (ST9: YES), it is determined that there is an abnormality, and the charging display unit 29 of the charging pole 5 displays “charging abnormality” "Is displayed (ST15), and the charging control unit 22 performs control so as not to start charging (ST16).

  If it is determined that there is no abnormality, charging is started (ST10), and “charging” is displayed on the charging display section 29 of the charging pole 5 (ST11).

  Although not shown in the flowchart, it is determined that the vehicle compartment side control unit 23 is abnormal during charging due to abnormal voltage and current values, abnormal connection of the outlet 26, and abnormal locking of the cover member 27. In such a case, the passenger compartment side control unit 23 transmits a charging abnormality signal to the checkout machine 3, and the charging control unit 22 controls to stop charging.

  When the user intends to enter the parking lot 2, when the user operates the key input unit 11 of the checkout machine 3 and inputs the vehicle compartment number (ST12), the parking fee corresponding to the parking time by the timer 19 is obtained. The payment is made and displayed on the display unit 12. When the user charges the parking fee and completes the payment of the parking fee (ST13), the controller 16 lowers the lock device 6 to release the lock of the vehicle 1 and release the lock mechanism 28 of the cover member 27. (ST14). The user can leave the vehicle 1 by removing the power plug 25 and closing the cover member 27.

  As described above, in the present embodiment, the charging state is monitored by the passenger compartment side control unit 23, and charging is performed when an abnormality occurs in the current value or voltage value during charging or the locking of the cover member 27 occurs. Therefore, it is possible to surely prevent a user's electric shock or the like and to significantly improve safety.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible based on the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Parking lot 3 Settlement machine 4 Car interior 5 Charge pole 6 Locking device 7 Charge control line 8 Lock control line 9 Distribution board 10 Power supply line 11 Key input part 12 Display part 13 Coin insertion slot 14 Bill insertion slot 15 Return opening DESCRIPTION OF SYMBOLS 16 Control part 17 Control board 18 Memory 19 Timer 20 Printer unit 21 Card processor 22 Charge control unit 23 Vehicle compartment side control part 24 Vehicle compartment side communication part 25 Power plug 26 Outlet 27 Cover member 28 Lock mechanism 29 Charge display part 30 Current Sensor 31 Voltage sensor 32 Power switch 33 Earth leakage breaker 34 Connection detector

Claims (11)

A charge control unit that is provided in a parking lot and performs charge control on a parked vehicle;
A connection detector for detecting a connection between a power feeding side connector to which power is supplied and a power receiving side connector of the vehicle;
A current sensor for measuring a current value flowing through the power supply side connector;
A voltage sensor for measuring a voltage value supplied to the power supply side connector;
With
The charging control unit is configured such that after the vehicle detected to be parked by detection by a vehicle sensor is locked by a lock device provided in a passenger compartment, a charge reservation is made, a charge reservation is made, and then the power supply The vehicle is characterized in that charging is not performed when an abnormality is determined by the lock mechanism when checking the lock completion by the lock mechanism that holds the power receiving side connector connected to the side connector. Charging system.   The charging control unit determines that an abnormality has occurred based on any one of a connection state of the power supply side connector in the connection detector, a current value in the current sensor, and a detection result of a voltage value in the voltage sensor. The vehicle charging system according to claim 1, wherein charging is not performed when the charging is performed. The charge control units are provided corresponding to a plurality of vehicle compartments, and charge control is performed on vehicles parked in the vehicle compartments, respectively, and the vehicle compartment side control units A charging control unit connected to
Each vehicle compartment side control unit constituting the plurality of vehicle compartment side control units is configured to perform charge control on detection results of the connection detector, the current sensor, and the voltage sensor respectively provided corresponding to each vehicle compartment. Send each to the unit,
The charging control unit does not charge a vehicle parked in a corresponding passenger compartment when it is determined that an abnormality has occurred based on signals from the plurality of passenger compartment side control units. The vehicle charging system according to claim 1 or 2.   4. The apparatus according to claim 3, further comprising a plurality of charge display units that are provided corresponding to the plurality of vehicle compartment side control units and that display a charging abnormality when it is determined that an abnormality has occurred by the charging control unit. Vehicle charging system.   The vehicle charging system according to any one of claims 1 to 4, wherein the charging control unit does not start charging when an abnormality occurs at the start of charging.   The vehicle charging system according to any one of claims 1 to 5, wherein the charging control unit stops charging when an abnormality occurs during charging.   The charging control unit determines whether or not there is an abnormality in the connection state of the power supply side connector in the connection detector, and when determining that no abnormality has occurred, the current value in the current sensor and the voltage sensor 7. The vehicle according to claim 1, wherein charging is started or continued when it is determined whether or not there is an abnormality in the voltage value of the battery and it is determined that no abnormality has occurred. Charging system.   8. The charging control unit according to claim 1, wherein when the current value detected by the current sensor is outside a predetermined value range at the start of charging or during charging, the charging control unit determines that there is an abnormality. The vehicle charging system according to any one of the above.   The charge controller determines that it is abnormal when a voltage value detected by the voltage sensor is outside a certain range when charging is started or during charging. The vehicle charging system according to any one of the above.   The vehicle charging system according to any one of claims 1 to 9, wherein the charging control unit determines that an abnormality occurs when the locking mechanism cannot be normally locked. Further comprising an openable / closable cover member capable of covering the power supply side connector,
The vehicle charging system according to claim 10, wherein the lock mechanism holds the cover member in a closed state.

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