JP6328573B2 - Electric vehicle charging system - Google Patents

Description

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

  2. Description of the Related Art Conventionally, there is an electric vehicle charging system that charges an electric vehicle using electric power supplied from a power source (for example, see Patent Documents 1 and 2).

  Usually, in such an electric vehicle charging system, after the user is authenticated, the electric vehicle is rapidly charged.

JP 2009-254123 A JP 2010-172068 A

  For example, if a quick charger of an electric vehicle charging system cannot be used due to failure or maintenance, the user must move the electric vehicle to a place where another quick charger is installed for charging. It was.

  In this case, if the remaining amount of electricity stored in the electric vehicle is small, it becomes difficult to drive the electric vehicle to the place where another quick charger is installed.

  Then, an object of this invention is to provide the charging system for electric vehicles which can charge an electric vehicle with a normal charger, when a quick charger is unusable states, such as a failure and a maintenance.

An electric vehicle charging system according to an aspect of the present invention includes:
An electric vehicle charging system for charging an electric vehicle using electric power supplied from one power source,
A quick charge authentication unit that authenticates the usage authority,
Using the power supplied from the power source, a quick charge control unit for controlling the quick charge for the electric vehicle,
A cable for rapid charging that transmits power for rapid charging; and
A quick charging connector connected to the quick charging cable;
While communicating with the quick charge authentication unit, the normal charge authentication unit for authenticating the use authority,
A normal charging control unit for controlling normal charging with a lower charging voltage and lower charging current than the quick charging for the electric vehicle using the power supplied from the power source;
A normal charging cable for transmitting power for normal charging;
A normal charging connector connected to the normal charging cable,
The normal charging authentication unit is
Communicating with the quick charge authentication unit, if it is determined that the quick charge is impossible and quick charge is disabled, after the user authentication, the normal charge control unit is allowed to normally charge the electric vehicle,
The normal charge controller is
The normal charging for the electric vehicle is executed through the normal charging cable and the normal charging connector according to the permission of the normal charging.

In the electric vehicle charging system,
The quick charge authentication unit
In the normal state in which the quick charge for the electric vehicle is possible, after the authorization of use authority, the quick charge control unit is allowed to allow the quick charge for the electric vehicle,
The quick charge control unit includes:
Performing the quick charge on the electric vehicle via the quick charge cable and the quick charge connector;
The normal charging authentication unit is
When it is determined that the normal state is established by communicating with the quick charge authentication unit, the normal charge control unit maintains the prohibition of the normal charge to the electric vehicle.

In the electric vehicle charging system,
The quick charge disabled state is a state in which a structure for quick charge is under maintenance or is in failure.

In the electric vehicle charging system,
In the normal state, the normal charging connector is locked and becomes unusable,
On the other hand, when the normal charge authentication unit authenticates the use authority in the quick charge disabled state, the normal charge connector is unlocked and is in a usable state.

In the electric vehicle charging system,
In the normal state, the door of the storage unit for storing the normal charging connector and the normal charging cable is closed,
On the other hand, in the quick charge disabled state, the door of the storage portion for storing the normal charging connector and the normal charging cable is opened.

In the electric vehicle charging system,
The quick charge authentication unit
When the configuration for quick charging is under maintenance, a maintenance signal indicating that the configuration for quick charging is under maintenance is sent to the normal charging authentication unit,
The normal charging authentication unit is
By receiving the maintenance signal, it is determined that the quick charge is not possible.

In the electric vehicle charging system,
The normal charging authentication unit is
It communicates with the said quick charge authentication part, and when there is no response from the said quick charge authentication part, it judges that it is the said quick charge impossible state.

In the electric vehicle charging system,
The normal charging authentication unit is
When it is determined that the quick charging is not possible, the authentication of the user is waited for.

In the electric vehicle charging system,
The electric vehicle charging system includes:
When the quick charge is disabled, the display device further includes a display unit for displaying that the quick charge is disabled.

In the electric vehicle charging system,
The normal charging authentication unit is
Periodically communicating with the quick charge authentication unit to determine whether the quick charge is disabled or the normal state.

In the electric vehicle charging system,
In the normal state,
The normal charge authentication unit communicates with the quick charge authentication unit to authenticate use authority based on authentication of a user of the quick charge authentication unit.

  An electric vehicle charging system according to the present invention is an electric vehicle charging system for charging an electric vehicle using electric power supplied from a single power source. A quick charge control unit that controls rapid charging for the electric vehicle using the supplied power, a quick charging cable that transmits power for quick charging, and a quick charging connector connected to the quick charging cable; The normal charging authenticating unit that communicates with the quick charging authenticating unit and authenticates the right to use, and the normal charging with the charging voltage lower than the quick charging and the charging current smaller than that for the electric vehicle using the power supplied from the power source A normal charging control unit for controlling the normal charging, a normal charging cable for transmitting power for normal charging, and a normal charging connector connected to the normal charging cable. That.

  If the normal charging authentication unit communicates with the quick charging authentication unit and determines that the quick charging cannot be performed and the quick charging is not possible, the normal charging control unit performs normal charging to the electric vehicle after authentication of the use authority. The normal charging control unit executes normal charging for the electric vehicle via the normal charging cable and the normal charging connector.

  As described above, the charging system for an electric vehicle according to the present invention cancels the normal charging security when the quick charger is in an unusable state such as failure or maintenance, and thus Charging can be performed.

  In other words, when the quick charger cannot be used due to failure or maintenance, the user can move the electric vehicle to the place where another quick charger is installed for charging even if the electric vehicle's remaining power is low. There is no need to move it.

  Furthermore, the charging system for an electric vehicle according to the present invention performs quick charging or normal charging for the electric vehicle using electric power supplied from one power source, thereby facilitating the management of electric charges. Therefore, it is not necessary to reinforce the electrical equipment, and the cost and size can be reduced.

  In addition, since the charging cable attached to the electric vehicle is not always provided, charging may not be possible with the outlet type.

  However, in the automobile charging system according to the present invention, the normal charging cable and the normal charging connector are attached, and the normal charging is also performed through the normal charging cable and the normal charging connector.

  Thereby, for example, it is possible to prevent theft of electric power through a general outlet of the charger.

FIG. 1 is a diagram illustrating an example of an external configuration of an electric vehicle charging system 100 according to the embodiment. FIG. 2 is a diagram illustrating an example of the configuration of the electric vehicle charging system 100 illustrated in FIG. 1. FIG. 3 is a diagram for explaining an example of the operation in the normal state of the electric vehicle charging system 100 shown in FIG. 1. FIG. 4 is a diagram for explaining an example of the operation of the electric vehicle charging system 100 shown in FIG. 1 in a state where rapid charging is not possible (the quick charger R is under maintenance). FIG. 5 is a diagram for explaining an example of the operation of the electric vehicle charging system 100 shown in FIG. 1 in a state where rapid charging is not possible (the quick charger R is under maintenance). FIG. 6 is a diagram illustrating an example of a state in which the door Na of the normal charger N is opened in the state where the quick charging cannot be performed in the electric vehicle charging system 100 illustrated in FIG. 1 (the quick charger R is under maintenance). FIG. 7 is a diagram for explaining an example of the operation of the electric vehicle charging system 100 shown in FIG. 1 in a state where rapid charging is not possible (the quick charger R is under maintenance). FIG. 8 shows an example of a state in which the normal charger N is opened and the normal charger N is opened in the electric vehicle charging system 100 quick charge disabled state shown in FIG. 1 (the quick charger R is under maintenance). FIG. FIG. 9 is a diagram for explaining an example of the operation of the electric vehicle charging system 100 shown in FIG. 1 in the quick charge disabled state (when there is no response from the quick charge authentication unit RR). FIG. 10 is a diagram for explaining an example of the operation of the electric vehicle charging system 100 shown in FIG. 1 in a state where rapid charging is not possible (when there is no response from the rapid charging authentication unit RR).

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
The electric vehicle charging system 100 shown in FIGS. 1 and 2 charges an electric vehicle 200 (that is, a battery (not shown) of the electric vehicle 200) using electric power supplied from one power source S (FIG. 2). It is supposed to be.

  The electric vehicle charging system 100 includes a quick charger R for rapidly charging (rapid charging) the electric vehicle 200 and a normal charging of the electric vehicle 200 with a charging voltage lower than that of the quick charging and with a smaller charging current. Normal charger N (FIGS. 1 and 2).

  For example, as shown in FIGS. 1 and 2, the quick charger R is an electric vehicle using a quick charge authentication unit RR that authenticates a user's authority to use the quick charger R and power supplied from a power source S. 200, a quick charge controller RC that controls the quick charge, a quick charge cable R1 that transmits power for quick charge, a quick charge connector R2 connected to the quick charge cable R1, a switch RSW, Is provided.

  In FIG. 1, the quick charge controller RC of the quick charger R is housed in the housing (housing portion) of the quick charger R. In FIG. 1, the switch RSW is omitted. This switch RSW is turned on when the quick charge is executed, and is turned off when the quick charge is not executed.

  As described above, the quick charge authentication unit RR authenticates the user's authority to use the quick charger R. For example, when the user holds a predetermined card over a reading unit (not shown) of the quick charge authentication unit RR, the quick charge authentication unit RR acquires information stored in the card. Then, the quick charge authentication unit RR determines whether or not the user has the authority to use the quick charger R based on the information stored in the card, thereby authenticating the user's use authority. Run.

  Furthermore, when the quick charge authentication unit RR is in a normal state in which the electric vehicle 200 can be rapidly charged, the quick charge control unit RC permits the quick charge to the electric vehicle 200 after authenticating the use authority of the user. It has become.

  In addition, the quick charge authentication unit RR transmits a signal indicating that it is in a normal state when it is in a normal state where quick charge is possible.

  On the other hand, when the configuration for rapid charging is under maintenance, the quick charge authentication unit RR transmits a maintenance signal indicating that the configuration for rapid charging is under maintenance.

  Further, as described above, the quick charge control unit RC controls the quick charge.

  When the quick charge is permitted by the quick charge authentication unit RR, the quick charge control unit RC performs the quick charge on the electric vehicle 200 via the quick charge cable R1 and the quick charge connector R2. It has become.

  Furthermore, the quick charger R includes a display unit D that displays the state of the quick charger R. For example, the display unit D displays that the quick charge is not possible when the quick charge is not possible, and particularly when the configuration for the quick charge is in a state of maintenance or failure. A message indicating that the vehicle is undergoing maintenance or is in failure is displayed (FIGS. 6 and 8).

  In addition, this quick charge impossible state is a state in which the structure for quick charge of the quick charger R is under maintenance or is out of order.

  Further, for example, as shown in FIGS. 1 and 2, the normal charger N communicates with the quick charge authentication unit RR and authenticates the user's authority to use the normal charger N, and a power source A normal charging control unit NC that controls normal charging using the electric power supplied from S to control normal charging with a charging voltage lower than that of quick charging and a charging current lower than that for the quick charging, and normal charging for transmitting electric power for normal charging. Cable N1, a normal charging connector N2 connected to the normal charging cable N1, and a switch NSW.

  In FIG. 1, the electric vehicle charging system 100 is in a state where the door Na of the ordinary charger N is closed and locked, and the ordinary charging authentication unit NR, the ordinary charging control unit NC, and the ordinary charging cable N1. The normal charging connector N2 is housed in the housing (housing portion) of the ordinary charger N. In FIG. 1, the switch NSW is omitted. The switch NSW is turned on when normal charging is executed, and is turned off when normal charging is not executed.

  As described above, the normal charge authentication unit NR communicates with the quick charge authentication unit RR and authenticates the user's authority to use the normal charger N.

  In the normal state, the normal charge authentication unit NR communicates with the quick charge authentication unit RR and authenticates the right to use the normal charger N based on the authentication of the user of the quick charge authentication unit RR.

  For example, when the quick charge authentication unit RR authenticates that the user has the right to use quick charge, the normal charge authentication unit NR authenticates that the user also has the right to use normal charge. On the other hand, if the quick charge authentication unit RR authenticates that the user does not have the right to use quick charge, the normal charge authentication unit NR authenticates that the user has no right to use normal charge. To do.

  For example, when the user holds a predetermined card over a reading unit (not shown) of the normal charging authentication unit NR, the normal charging authentication unit NR acquires information stored in the card, and the normal charging authentication is performed. The unit NR determines whether or not the user has the right to use the normal charger N based on information stored in the card, thereby performing authentication of the user's use right. Also good.

  Here, when the normal charging authentication unit NR communicates with the quick charging authentication unit RR and determines that the quick charging is not possible and the quick charging is not possible, the normal charging control unit NC sends the electric vehicle to the normal charging control unit NC after user authentication The normal charge to 200 is permitted.

  For example, the normal charge authentication unit NR determines that the quick charge is not possible by receiving the maintenance signal from the quick charge authentication unit RR. Further, the normal charging authentication unit NR communicates with the quick charging authentication unit RR and determines that the quick charging is not possible even when there is no response from the quick charging authentication unit RR.

  Further, in the state where rapid charging is not possible, the door Na of the storage unit that stores the normal charging connector N2 and the normal charging cable N1 is opened. Further, when the normal charging authentication unit NR authenticates the use authority in the quick charge disabled state, the normal charging connector N2 is released from the lock and becomes in a usable state.

  On the other hand, the normal charge authentication unit NR communicates with the quick charge authentication unit RR, receives a signal indicating the normal state, and determines that the normal state is the normal state, the normal charge control unit NC sends the signal to the electric vehicle 200. Maintain the prohibition of normal charging. For example, the normal charging authentication unit NR may determine that the normal charging state is present when there is a response from the quick charging authentication unit RR and the maintenance signal is not received.

  In this normal state, the door Na of the storage unit that stores the normal charging connector N2 and the normal charging cable N1 is closed.

  The normal charge authentication unit NR periodically communicates with the quick charge authentication unit RR to determine whether the state is the quick charge disabled state or the normal state.

  Further, the normal charging control unit NC controls the normal charging as described above.

  When normal charging is permitted by the normal charging authentication unit NR (in response to permission for normal charging), the normal charging control unit NC is connected to the electric vehicle via the normal charging cable N1 and the normal charging connector N2. The normal charging for 200 is executed.

  Here, an example of operation | movement of the charging system 100 for electric vehicles which has the above structures is demonstrated.

  First, an example of the operation in the normal state of the electric vehicle charging system 100 shown in FIG. 1 will be described with reference to FIGS.

  For example, as shown in FIG. 3, since the quick charge authentication unit RR is in a normal state in which the electric vehicle 200 can be quickly charged, after the user's use authority is authenticated, the quick charge control unit RC receives the electric vehicle 200. Allow fast charging against.

  Then, since the quick charge is permitted by the quick charge authentication unit RR, when the quick charge connector R2 is connected to the electric vehicle 200 by the user, the quick charge control unit RC includes the quick charge cable R1 and the quick charge. The electric vehicle 200 is rapidly charged via the connector R2.

  On the other hand, the normal charge authentication unit NR communicates with the quick charge authentication unit RR, receives a signal indicating the normal state, determines that the normal state is present, and sends the normal charge control unit NC to the electric vehicle 200. The normal charging prohibition is maintained (switch NSW is off).

  In this normal state, the door Na of the storage unit that stores the normal charging connector N2 and the normal charging cable N1 is locked and closed (FIG. 1). Thereby, in the normal state, the user cannot perform normal charging by the normal charger N.

  Next, an example of the operation of the electric vehicle charging system 100 shown in FIG. 1 in the quick charge disabled state (the quick charger R is under maintenance) will be described with reference to FIGS.

  For example, as shown in FIG. 4, the quick charge authenticating unit RR sends a maintenance signal indicating that the quick charge configuration is under maintenance because the configuration for quick charge is under maintenance. Send to NR. At this time, the display unit D displays that the configuration for rapid charging is under maintenance.

  When the normal charging authentication unit NR receives the maintenance signal from the quick charging authentication unit RR and determines that the quick charging is not possible, the normal charging connector N2 and the normal charging cable N1 are connected. The door Na of the storage unit to be stored is unlocked and the door Na is opened (FIGS. 5 and 6).

  Further, when the normal charging authentication unit NR authenticates the user's authority to use the normal charger N, the normal charging connector N2 is unlocked and becomes usable. Further, the normal charging authentication unit NR permits the normal charging control unit NC to perform normal charging on the electric vehicle 200 after the user authentication.

  Then, when the normal charging connector N2 is connected to the electric vehicle 200 by the user, the normal charging control unit NC is connected to the electric via the normal charging cable N1 and the normal charging connector N2 (switch SWN is on). Normal charging of the automobile 200 is started (FIGS. 7 and 8).

  The examples in FIGS. 4 to 6 show the case where the quick charger R is under maintenance, but there may be a case where there is a response from the quick charge authentication unit RR and the quick charge control unit RC is out of order. The same will be explained.

  As described above, the charging system 100 for an electric vehicle cancels the security of normal charging when the quick charger R is in a state such as failure of the quick charge control unit RC or maintenance of a configuration for quick charging. Thus, normal charging can be performed on the electric vehicle 200.

  Next, with reference to FIGS. 9 to 10, an example of the operation of the electric vehicle charging system 100 shown in FIG.

  As shown in FIG. 9, the normal charge authentication unit NR communicates with the quick charge authentication unit RR and determines that the quick charge is not possible even when there is no response from the quick charge authentication unit RR.

  The normal charge authentication unit NR communicates with the quick charge authentication unit RR, and determines that the quick charge is not possible when there is no response from the quick charge authentication unit RR.

  When the normal charging authentication unit NR determines that the quick charging is not possible, the normal charging authentication unit NR waits for user authentication (FIG. 10). At this time, the normal charging authentication unit NR unlocks the door Na of the storage unit that stores the normal charging connector N2 and the normal charging cable N1, and opens the door Na.

  When the normal charging authentication unit NR authenticates the user's authority to use the normal charger N, the normal charging connector N2 is unlocked and becomes usable. Further, the normal charging authentication unit NR permits the normal charging control unit NC to perform normal charging on the electric vehicle 200 after the user authentication.

  Then, when the normal charging connector N2 is connected to the electric vehicle 200 by the user, the normal charging control unit NC is connected to the electric via the normal charging cable N1 and the normal charging connector N2 (switch SWN is on). Normal charging for the automobile 200 is started.

  As described above, the electric vehicle charging system 100 according to the present invention is an electric vehicle charging system 100 that charges the electric vehicle 200 using electric power supplied from one power source S, and authenticates the use authority. A quick charge authenticating unit RR that uses the electric power supplied from the power source S, a quick charge control unit RC that controls the quick charge for the electric vehicle 200, and a quick charge cable R1 that transmits electric power for quick charge. The quick charging connector R2 connected to the quick charging cable R1, the normal charging authenticating unit NR that communicates with the quick charging authenticating unit RR and authenticates the use authority, and the power supplied from the power source S, A normal charging control unit NC that controls normal charging, which has a lower charging voltage and lower charging current than quick charging, and electric power for normal charging to the electric vehicle 200 That includes the normal charge cable N1, which is connected to the normal charging cable N1 ordinary charging connector N2, the.

  When the normal charging authentication unit NR communicates with the quick charging authentication unit RR and determines that the quick charging is not possible, the normal charging control unit NC sends the electric vehicle 200 to the normal charging control unit NC. The normal charging control unit NC executes normal charging for the electric vehicle 200 via the normal charging cable N1 and the normal charging connector N2.

  As described above, the charging system 100 for an electric vehicle according to the present invention releases the normal charging security when the quick charger is in an unusable state such as a failure or maintenance, for example, to the electric vehicle 200. Can be charged normally.

  That is, when the quick charger cannot be used due to failure, maintenance, or the like, the user can go to the place where another quick charger is installed for charging even if the remaining amount of charge of the electric vehicle 200 is small. There is no need to move 200.

  Furthermore, the electric vehicle charging system 100 according to the present invention uses the electric power supplied from one power source S to perform either quick charging or normal charging for the electric vehicle 200, and therefore manages the electric charge. This can be facilitated, and there is no need to reinforce the electrical equipment, and the cost and size can be reduced.

  Further, since the charging cable attached to the electric vehicle 200 is not always provided, charging may not be possible with the outlet type.

  However, in the vehicle charging system according to the present invention, the normal charging cable N1 and the normal charging connector N2 are attached, and the normal charging is also performed through the normal charging cable N1 and the normal charging connector N2.

  Thereby, for example, it is possible to prevent theft of electric power through a general outlet of the charger.

  In addition, after the maintenance of the configuration for quick charging of the quick charger R is completed, or after repair of the failure is completed and the quick charge is disabled, for example, the maintenance person can connect the normal charging connector N2 In addition, the normal charging cable N1 is stored in the storage unit to lock the door Na, and the normal charging security is made effective. Further, the maintenance person sets the quick charger to a mode that can be normally used.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

100 Electric Vehicle Charging System 200 Electric Vehicle R Rapid Charger N Normal Charger RR Rapid Charge Authentication Unit RC Rapid Charge Control Unit R1 Rapid Charge Cable R2 Rapid Charge Connector D Display Unit NR Normal Charge Authentication Unit NC Normal Charge Control Unit N1 Normal charging cable N2 Normal charging connector Na Door S Power supply

Claims (11)

An electric vehicle charging system for charging an electric vehicle using electric power supplied from one power source,
A quick charge authentication unit that authenticates the usage authority,
Using the power supplied from the power source, a quick charge control unit for controlling the quick charge for the electric vehicle,
A cable for rapid charging that transmits power for rapid charging; and
A quick charging connector connected to the quick charging cable;
While communicating with the quick charge authentication unit, the normal charge authentication unit for authenticating the use authority,
A normal charging control unit for controlling normal charging with a lower charging voltage and lower charging current than the quick charging for the electric vehicle using the power supplied from the power source;
A normal charging cable for transmitting power for normal charging;
A normal charging connector connected to the normal charging cable,
The normal charging authentication unit is
Communicating with the quick charge authentication unit, if it is determined that the quick charge is impossible and quick charge is disabled, after the user authentication, the normal charge control unit is allowed to normally charge the electric vehicle,
The normal charge controller is
The charging system for an electric vehicle, wherein the normal charging for the electric vehicle is executed via the normal charging cable and the normal charging connector in accordance with the permission of the normal charging. The quick charge authentication unit
In the normal state in which the quick charge for the electric vehicle is possible, after the authorization of use authority, the quick charge control unit is allowed to allow the quick charge for the electric vehicle,
The quick charge control unit includes:
Performing the quick charge on the electric vehicle via the quick charge cable and the quick charge connector;
The normal charging authentication unit is
2. The electric vehicle according to claim 1, wherein when the normal charging state is determined by communicating with the quick charge authentication unit, the normal charging control unit maintains the prohibition of the normal charging to the electric vehicle. Charging system. 2. The electric vehicle charging system according to claim 1, wherein the quick charging disabled state is a state in which a configuration for quick charging is under maintenance or has failed. In the normal state, the normal charging connector is locked and becomes unusable,
On the other hand, when the normal charging authentication unit authenticates the use authority in the quick charge disabled state, the normal charging connector is unlocked and is in a usable state. The charging system for electric vehicles as described. In the normal state, the door of the storage unit for storing the normal charging connector and the normal charging cable is closed,
5. The electric vehicle charging system according to claim 4, wherein, in the quick charging disabled state, a door of the storage unit that stores the normal charging connector and the normal charging cable is opened. The quick charge authentication unit
When the configuration for quick charging is under maintenance, a maintenance signal indicating that the configuration for quick charging is under maintenance is sent to the normal charging authentication unit,
The normal charging authentication unit is
The electric vehicle charging system according to claim 3, wherein it is determined that the quick charging is not possible by receiving the maintenance signal. The normal charging authentication unit is
2. The electric vehicle charging system according to claim 1, wherein communication with the quick charge authentication unit determines that the quick charge is not possible when there is no response from the quick charge authentication unit. The normal charging authentication unit is
The charging system for an electric vehicle according to claim 7, wherein when it is determined that the quick charging is not possible, user authentication is awaited. The electric vehicle charging system includes:
The charging system for an electric vehicle according to claim 1, further comprising a display unit that displays that the quick charging is not possible when the quick charging is not possible. The normal charging authentication unit is
The charging system for an electric vehicle according to claim 2, wherein communication with the quick charge authentication unit is periodically performed to determine whether the quick charge is disabled or the normal state. . In the normal state,
The said normal charge authentication part communicates with the said quick charge authentication part, and authenticates use authority based on the authentication of the user of the said quick charge authentication part. Charging system.

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