JP2013187968A - Charge control device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charge control device of a vehicle that can charge in a short time without unnecessary power consumption, when a power line communication system is installed in the vehicle, and the charge communication with an external charging device is available when charging, and in the charging devices, the ones capable of charge communication and the ones incapable of charge communication are intermixed.SOLUTION: A charge control device of a vehicle that has a power line communication system capable of charging and power line communication with a charging device 10 by connecting the vehicle 110 to the charging device 10 outside the vehicle, has: a charge communication control means 50 to send/receive data necessary for charge to/from the charging device 10 by power line communication 30; and an in-vehicle communication network 60 including electronic control units 62 and 63 that are connected with the charge communication control means 50 and supply the data necessary to charge to the charge communication control means 50. The charge communication control means 50 stops the communication of the in-vehicle communication network, when power line communication with the charging device does not work out when charging.

Description

  The present invention relates to a charging control device for a vehicle, and more particularly to a charging control device for a vehicle having a power line communication system capable of charging and power line communication between the charging device by connecting the vehicle to a charging device outside the vehicle.

  Conventionally, when charging a power storage device mounted on a vehicle by external charging, activation of the security system electrical device not related to charging was suppressed, and the security system electrical device was prevented from malfunctioning due to vibration during charging. A vehicle control device is known (see, for example, Patent Document 1).

JP 2009-292333 A

  However, in the configuration described in Patent Document 1, activation of the electric device that reacts to vibration, such as a security system, is suppressed during charging, but other electric devices are always operating during charging. There is a problem in that unnecessary power is consumed and the charging time may be increased.

  Further, in Patent Document 1, although communication using a power line, that is, charging from an external charging device and communication with an external charging device by so-called power line communication is not considered at all, It is conceivable to introduce a power line communication system that performs both charging and communication with a charging device through power line communication when a vehicle is connected to the vehicle.

  However, even when such a power line communication system is introduced, it is conceivable that an external charging device compatible with power line communication and an external charging device not compatible with the power line communication coexist. Under such circumstances, when a vehicle equipped with a power communication system is connected to a charging device that does not support power line communication, an ECU (Electronic Control Unit) related to power line communication on the vehicle side is activated. Then, charging is performed in a state in which an ECU that does not require an operation is activated at the time of charging, and it is predicted that the unnecessary ECU consumes electric power and the charging time becomes longer.

  Therefore, the present invention is a case where a power line communication system is introduced into a vehicle, charging communication with an external charging device is possible at the time of charging, and charging devices that can and cannot perform charging communication are mixed. However, an object of the present invention is to provide a charging control device for a vehicle that can be charged in a short time without unnecessary power consumption.

In order to achieve the above object, a charging control device for a vehicle according to an aspect of the present invention provides a power line communication system capable of charging and power line communication between the charging device by connecting the vehicle to a charging device outside the vehicle. In a vehicle charge control device having
Charging communication control means for transmitting and receiving data necessary for charging by the charging device and the power line communication;
An in-vehicle communication network including an electronic control unit connected to the charging communication control means and supplying data necessary for the charging to the charging communication control means;
The charging communication control means stops communication of the in-vehicle communication network when the power line communication with the charging device is not established at the time of charging.

  According to the present invention, charging can be performed in a short time from a charging device outside the vehicle.

1 is an overall configuration diagram illustrating an example of a vehicle charge control device according to an embodiment of the present invention. It is the figure which showed the processing flow of charge connector connection detection ECU of the charge control apparatus of the vehicle which concerns on the Example of this invention. It is the figure which showed the processing flow of charge communication ECU of the charge control apparatus of the vehicle which concerns on the Example of this invention. It is the figure which showed the processing flow of the additional function of charge communication ECU of the charge control apparatus of the vehicle which concerns on the Example of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is an overall configuration diagram showing an example of a vehicle charging control apparatus according to an embodiment of the present invention. In FIG. 1, a vehicle charging control apparatus according to an embodiment of the present invention includes a connector receiver 20, a charging communication line 30 such as a power line, a charging communication ECU 50, an in-vehicle communication network 60, a charging connector connection detection ECU 70, The connecting line 71, the relay 80, the ignition switch 90, and the detection control ECU 100 are included in the vehicle 110. The in-vehicle communication network 60 includes a communication line 61, a first ECU 62, and a second ECU 63. In FIG. 1, a charging device 10, a charging cable 11, a charging connector 12, and a failure diagnosis tool 120 are shown outside the vehicle 110 as related components of the charging control device according to the present embodiment. .

  The connector receiver 20 is provided so as to be exposed on the outer surface of the vehicle 110, and the charging communication line 30 and the connection line 71 are connected to the connector receiver 20. Note that the term “exposed” means that the connector receiver 20 may be provided so as to be covered by a cover or the like, but it can be exposed to the outer surface of the vehicle 110 by removing the cover or the like during charging. A charging communication ECU 50 is connected to the charging communication line 30. The charging communication ECU 50 is connected to the in-vehicle communication network 60 via the communication line 61, and the first ECU 62 and the second ECU 63 are similarly connected to the in-vehicle communication network 60 via the communication line 61. ing. Note that an in-vehicle battery may be connected to the charging communication line 30 as necessary.

  In addition, a charging connector connection detection ECU 70 is connected to the connection line 71 connected to the connector receiver 20. A relay 80 is connected between the charging connector connection detection ECU 70 and the charging communication ECU 50. A detection control ECU 100 is connected to the charging connector connection detection ECU 70 and the charging communication ECU 50. The detection control ECU 100 is connected to the ignition switch 90 so that the on / off state of the ignition switch 90 can be detected. Further, a charging device 10 is provided outside the vehicle 110, a charging cable 11 is connected to the charging device 10, and a charging connector 12 is connected to the tip of the charging cable 11. A failure diagnosis tool 120 is connected to the communication line 61 of the in-vehicle communication network 60 from the outside of the vehicle 110.

  The charging device 10 is a charging device that is provided outside the vehicle 110 and is connected to the vehicle 110 to supply power to an in-vehicle battery (not shown) or the like for charging. The charging device 10 is a power supply device or a power feeding device for supplying electric power to an on-vehicle battery for driving a motor when the vehicle 110 is configured as an electric vehicle and travels using a motor as driving means. The charging device 10 may be installed in a public space facing a public road, for example, or may be installed in a residential premises. That is, the charging device 10 may be provided near a public road as a charging station in order to play a role similar to a gasoline station in a gasoline vehicle, or a residential site as a household charger for charging in each household. It may be provided inside. The charging device 10 is configured as a device having a charging function, such as a quick charger.

  The charging devices 10 such as charging stations installed throughout the country include both devices capable of charging communication and devices not capable of charging communication. The charging device 10 capable of charging communication is configured to be able to perform charging communication with the vehicle 110 using the charging cable 11 when the vehicle 110 is connected, and also incorporates modules, components, and the like for performing communication. . On the other hand, in the case of a stand where charging communication is impossible, modules, parts, etc. for performing communication are not mounted. Here, the charging communication means that data and information necessary for charging are transmitted and received between the charging device 10 and the vehicle 110. For example, the required power is what voltage or what voltage is V. It means transmission / reception of data and information related to charging, such as whether to supply or how much power the charging apparatus 10 can supply. Here, how much power the charging device 10 can supply is, for example, when the charging device 10 is connected to another household electrical product and is being charged, the charging capability is reduced. In some cases, charging communication is performed so as to cope with such a case.

  As described above, the charging device 10 may or may not be capable of charging communication, but the control content of the vehicle charging control device according to the present embodiment is not capable of charging communication by the charging device 10. In this embodiment, the case where the charging device 10 does not support charging communication and cannot perform charging communication will be described as an example.

  The charging cable 11 is a power supply cable for transmitting the power supplied from the charging device 10 to the vehicle 110. When the charging device 10 performs charging communication, the charging cable 11 functions as a cable for transmitting information such as various data as well as power, but when the charging device 10 does not perform charging communication. It functions as a cable for transmitting power only.

  The charging connector 12 is a connection member for connecting the charging cable 11 to the vehicle 110. As long as the charging connector 12 can be physically and electrically connected to the vehicle 110, various connection means may be used. For example, as shown in FIG. It may be a means for inserting and connecting to the connector receiver 20 having a plurality of holes on the 110 side.

  The connector receiver 20 is a connecting member that can be connected to the charging connector 12 and is configured to be paired with the charging connector 12. The connection with the charging connector 12 may be performed by various connection methods. For example, the charging device 10 and the vehicle 110 are electrically connected by fitting the charging connector 12 and the connector receiver 20 together. It may be. The connector receiver 20 is provided, for example, at any location on the outer surface of the body of the vehicle 110 and is arranged so as to be easily connected to the charging device 10 provided outside.

  The charging communication line 30 is an electric wiring configured to enable power line communication, and is configured to transmit power for charging to an in-vehicle battery or the like and to perform data communication between the charging communication ECU 50 and the charging device 10. . Thus, for example, the charging communication line 30 may be connected to both the in-vehicle battery and the charging communication ECU 50. Power line communication is a technology that uses a charging communication line 30 such as a power line as a communication line, and it is not necessary to provide a communication line for performing charging communication separately from the charging communication line 30.

  The charging connector 12 is connected to the connector receiver 20, and the charging device 10 and the in-vehicle battery are connected as they are without any particular limitation at the stage where the charging cable 11, the charging connector 12, the connector receiver 20, and the charging communication line 30 are connected. Charging of the in-vehicle battery is started.

  A vehicle battery (not shown) is a rechargeable storage battery mounted on the vehicle 110, and is configured as a drive battery for supplying power to a motor (not shown) that is a drive source of the vehicle 110. Therefore, the in-vehicle battery is configured as a high voltage battery of about 200 V, for example, and it takes a certain amount of time for charging. Therefore, it is preferable to shorten the charging time as much as possible. The charging control device for a vehicle according to the present embodiment can shorten the charging time when the charging device 10 does not perform charging communication. Details of this point will be described later.

  The in-vehicle battery may be a battery having various configurations as long as it can function as a motor driving battery. For example, the in-vehicle battery may be configured as a lithium ion battery or a nickel metal hydride battery. May be.

  The charging communication ECU 50 is a charging communication control means for performing power line communication using the charging communication line 30 with the external charging device 10. Specifically, for example, the charging communication ECU 50 transmits data necessary for charging such as information and data of the in-vehicle communication network 60 received from the first ECU 62 and the second ECU 63 to the charging device 10.

  The charging communication ECU 50 performs control to start communication with the in-vehicle communication network 60 or stop communication with the in-vehicle communication network 60. For example, when the charging connector 12 is connected to the connector receiver 20, the charging communication ECU 50 starts communication with the in-vehicle communication network 60. It is to be noted that the charging connector connection detection ECU 70 detects that the charging connector 12 is connected to the connector receiver 20. When the charging connector 12 is detected, the relay 80 is turned on, and the charging communication ECU 50 is turned on based on the ON of the relay 80. Start up.

  Further, when the charging communication ECU 50 transmits a communication start signal to the charging device 10 outside the vehicle 110, the charging communication ECU 50 waits for a response from the charging device 10, but there is no response from the charging device 10 and communication with the charging device 10 is performed. If it is not established, the communication of the in-vehicle communication network 60 is stopped. Thereby, when the vehicle 110 is connected to the charging device 10 that does not perform the charging communication or when the charging device 10 is not connected to the vehicle 110, unnecessary communication of the in-vehicle network 60 can be stopped, and is unnecessary. Power consumption can be avoided. Details of this point will be described later.

  The charging communication ECU 50 includes, for example, a CPU (Central Processing Unit) for performing arithmetic processing related to communication control as described above, and a microcomputer that operates according to a program or a multi-function electronic device for a specific application. It may be configured as an ASIC (Application Specific Integrated Circuit) that is an integrated circuit in which circuits are integrated into one. This also applies to the other ECUs 62, 63, 70, 100.

  The in-vehicle communication network 60 constitutes a network between ECUs in the vehicle 110, and enables communication between the charging communication ECU 50, the first ECU 62, and the second ECU 63. Thereby, each ECU50, 62, 63 can share data and information.

  The in-vehicle communication network 60 may adopt various communication networks as long as the communication network can be configured in the vehicle 110, but may be constructed by CAN (Controller Area Network) communication, for example. In this case, two CAN buses are used for the communication line 61.

  The first ECU 62 and the second ECU 63 are ECUs that process data necessary for charging, and transmit data necessary for charging to the charging communication ECU 50 via the communication line 61. Note that the data necessary for charging is data to be transmitted to the charging device 10 side, such as necessary power and voltage setting at the time of power supply, as described above.

  The first ECU 62 and the second ECU 63 may process data other than the data related to charging, or may perform other controls as necessary. The first ECU 62 and the second ECU 63 are examples of ECUs that process data related to charging, and such ECUs may exist in addition to the first ECU 62 and the second ECU 63, and vice versa. In addition, only one of the first ECU 62 and the second ECU 63 may exist.

  The charging connector connection detection ECU 70 is charging connector connection detection means for detecting the connection of the charging connector 12 to the connector receiver 20. For example, the charging connector connection detection ECU 70 receives a charging connector connection detection signal (insertion detection signal) via the connection line 71 when the charging connector 12 is inserted into the connector receiver 20, and the charging connector 12 and the connector receiver 20 fits are detected. Further, for example, when the charging connector 12 is removed from the connector receptacle 20, the insertion (fitting) signal from the connection line 71 disappears and the disconnection of the charging connector 12 is detected, or the connection line 71 Receiving the extraction signal, the disconnection of the charging connector 12 is detected.

  Further, the charging connector connection detection ECU 70 has a function of turning on the relay 80 when detecting the insertion connection between the charging connector 12 and the connector receiver 20. As described above, the relay 80 is connected and provided between the charging connector connection detection ECU 70 and the charging communication ECU 50. Therefore, when the relay 80 is turned on, the charging communication ECU 50 is connected via the relay 80. The fitting connection between the charging connector 12 and the connector receiver 20 can be detected.

  The charging connector connection detection ECU 70 also has a function of detecting that the ignition switch 90 is turned on. In FIG. 1, the ignition switch 90 is connected to a charging connector connection detection ECU 70 via a detection control ECU 100. Therefore, the charging connector connection detection ECU 70 can detect the on / off state of the ignition switch 90 via the detection control ECU 100.

  Here, the detection control ECU 100 is an ECU for detecting the on / off state of the ignition switch 90 and transmitting the on / off state to the charging connector connection detection ECU 70 and the charging communication ECU 50. The detection control ECU 100 may be provided as necessary. For example, the ignition switch 90 is linearly connected to the charging connector connection detection ECU 70 and the charging communication ECU 50, and the linear connection 50 is directly connected to the charging connector connection detection ECU 70 and the charging communication ECU 50. It may be configured to detect the on / off state of the switch 90.

  The ignition switch 90 is a switch for energizing the engine ignition system. When the failure diagnosis tool 120 is connected to the vehicle 110 and a failure diagnosis of the ECU in the vehicle 110 is performed, the failure diagnosis is performed by turning on the ignition switch 90.

  When the charging connector connection detection ECU 70 detects that the ignition switch 90 is on, the charging connector connection detection ECU 70 performs control to turn on the relay 80. That is, the charging connector connection detection ECU 70 performs control to turn on the relay 80 when the charging connector 12 is connected to the connector receiver 20 and when the ignition switch 90 is turned on.

  On the other hand, the charging communication ECU 50 starts communication with the in-vehicle communication network 60 when detecting that the relay 80 is turned on. That is, the charging communication ECU 50 communicates with the in-vehicle communication network 60 not only when the charging connector 12 is inserted into the connector receiver 20 and the charging device 10 is connected to the vehicle 10 but also when the ignition switch 90 is on. Start communication.

  Here, even when the ignition switch 90 is on, communication with the in-vehicle communication network 60 is started when the failure diagnosis tool 120 is connected to the vehicle 110 and the ECU 110 in the vehicle 110 performs a failure diagnosis. If communication of the communication network 60 is in a stopped state, the failure diagnosis is performed in a state where the communication functions of the first ECU 62 and the second ECU 63 included in the in-vehicle network 60 are not operating, and thus the first ECU 62 This is because the second ECU 63 may be erroneously diagnosed as having a failure. Details of this point will be described later.

  The failure diagnosis tool 120 is connected to the in-vehicle communication network 60 such as the in-vehicle communication network 60 from the outside of the vehicle 110, and is connected to the in-vehicle communication network from the situation of the in-vehicle communication network with the ignition switch 90 turned on. It is a device used to monitor the ECU that is being used and to troubleshoot based on the connection status of the ECU.

  Based on the relay 80 being turned on, the charging communication ECU 50 performs control to start communication with the in-vehicle communication network 60 when the charging connector 12 is connected to the connector receiver 20 and when the ignition switch 90 is turned on. After that, a communication start signal is transmitted to the charging device 10 and a response is waited. However, when there is no response and charging communication is not established, communication of the in-vehicle communication network 60 including the first ECU 62 and the second ECU 63 is performed. Control to stop. Thereby, when the charging device 10 does not perform the charging communication, the communication of the in-vehicle communication network 60 including the first ECU 62 and the second ECU 63 related to the charging communication is stopped, and the first ECU 62 and the second ECU 62 It is possible to prevent the ECU 63 from wastefully consuming electric power and extending the charging time.

  When charging communication is not established, the charging device 10 is not connected to the vehicle 110, and the charging device 10 is connected to the vehicle 110, but the charging device 10 does not perform charging communication. Is included. When the vehicle 110 is traveling, the external charging device 10 is naturally not connected to the vehicle 110, and charging communication is not established. In this case, the communication of the in-vehicle communication network 60 stops, but the first ECU 62 and the second ECU 63 included in the in-vehicle communication network 60 are ECUs that have data regarding charging and need only operate during charging communication. Therefore, even if it is stopped during traveling, it does not affect the traveling. In addition, since it is meaningless to transmit data related to charging to the charging device 10 that does not perform charging communication, there is no problem even if communication of the in-vehicle communication network 60 is stopped in this case.

  In addition, an ignition switch 90 is connected to the charging communication ECU 50 via a detection control ECU 100 so that the on / off state of the ignition switch 90 can be detected without going through the relay 80. Even when the communication with the charging device 10 is not established, when the ignition switch 90 is on, the charging communication ECU 50 performs control so as not to stop the communication of the in-vehicle communication network. Even when the charging device 10 is connected to the vehicle 110 and the communication between the charging communication 10 and the vehicle 110 is not established, if the ignition switch 90 is on, the above-described failure diagnosis tool 120 uses the in-vehicle communication network 60. May be fault diagnosed. As described above, when the failure diagnosis is performed while the communication of the in-vehicle communication network 60 is stopped, the first ECU 62 and the second ECU 63 that are stopped in communication may be misdiagnosed as having a failure. Therefore, in order to avoid such a misdiagnosis, the charging communication ECU 50 can detect the on / off state of the ignition switch 90. The charging communication ECU 50 communicates with the charging device 10 when the ignition switch 90 is on. Even if is not established, control is performed so that the communication of the in-vehicle communication network 60 is not stopped and is operated.

  Note that the on / off state of the ignition switch 90 is independently detected by the charging communication ECU 50 without going through the relay 80, and when the ignition switch 90 is on, the charging communication ECU 50 does not communicate with the charging device 10. The configuration in which the charging communication ECU 50 does not stop the communication of the in-vehicle communication network 60 even if it is established is not essential and may be provided as necessary. When the user uses the failure diagnosis tool 120, he / she knows that charging is not performed, and if the user observes it, the vehicle charging control apparatus according to the present embodiment can be appropriately used without such a function. This is because it can operate.

  Next, the operation of the vehicle charging control apparatus according to this embodiment will be described with reference to FIGS. In addition, the same referential mark is attached | subjected to the component similar to the component demonstrated until now, and the description shall be abbreviate | omitted.

  FIG. 2 is a diagram showing a processing flow of the charging connector connection detection ECU of the vehicle charging control apparatus according to the embodiment of the present invention.

  In step S100, the connector connection detection ECU 70 determines whether the charging connector 12 is connected to the connector receptacle 20 or whether the ignition switch 90 is on. Whether or not the charging connector 12 is connected to the connector receiver 20 is detected by, for example, the connector connection detection ECU 70 receiving a connector connection signal via the connection line 71. Whether or not the ignition switch is ON is determined by, for example, the connector connection detection ECU 50 receiving an ignition ON signal from the detection control ECU 100 or by detecting ON directly from the ignition switch 90.

  In step S100, when the connector connection detection ECU 70 detects that the charging connector 12 is connected to the connector receiver 20 or the ignition switch 90 is on, the process proceeds to step S110. Exit.

  In step S110, the connector connection detection ECU 70 turns on the relay 80 and ends the processing flow.

  Thus, the connector connection detection ECU 70 detects whether the charging connector 12 is connected to the connector receiver 20 or whether the ignition switch 90 is on.

  FIG. 3 is a diagram showing a processing flow of the charging communication ECU of the vehicle charging control apparatus according to the embodiment of the present invention.

  In step S200, charging communication ECU 50 determines whether or not relay 80 is on. The charging communication ECU 50 simply detects whether or not the relay 80 is on. In step S200, the charging communication ECU 50 proceeds to step S210 when it detects that the relay 80 is turned on, and ends the processing flow when it detects that the relay 80 is turned off.

  In step S <b> 210, charging communication ECU 50 starts communication with in-vehicle communication network 60 based on turning on of relay 80. The in-vehicle communication network 60 including the first ECU 62 and the second ECU 63 includes communication between the first ECU 62 and the second ECU 63, and data necessary for charging communication from the first ECU 62 and the second ECU 63. The communication to be supplied to is started using the communication line 61. Further, the charging communication ECU 50 transmits a communication start signal to the external charging communication device 10.

  In step S220, charging communication ECU 50 determines whether charging communication with charging device 10 is not established. Whether charging communication is not established or not established may be determined, for example, based on whether or not there is a response from the charging device 10 to the communication start signal transmitted to the external charging communication device 10. That is, if there is a response, it is determined that communication is established, and if there is no response, it is determined that communication is not established. As described above, when the charging device 10 is not connected to the charging communication ECU 50 and when the charging device 10 does not perform power line communication even if the charging device 10 is connected to the charging communication ECU 50, There is no response signal from the charging device 10, and power line communication is not established. In addition, you may perform determination of whether communication with the charging device 10 is not materialized by another method.

  In step S220, when the charging communication with the charging apparatus 10 is established, the processing flow is terminated, and when the charging communication with the charging apparatus 10 is not established, the process proceeds to step S230.

  In step S230, the charging communication ECU 50 stops the communication of the in-vehicle communication network 60 and ends the processing flow. Thereby, when the charging device 10 is not connected to the vehicle 110, or when the charging device 10 does not support charging communication even though it is connected, the first ECU 62 and the second ECU related to the charging communication. Communication of the in-vehicle communication network 60 including the ECU 63 can be stopped, and power consumption due to operations of the first ECU 62 and the second ECU 63 can be prevented.

  As described above with reference to FIGS. 2 and 3, in the charging control device for a vehicle according to the present embodiment, when the ignition switch 90 is on and the failure diagnosis is performed, and the charging device 10 that performs charging communication. When connected to, since communication with the in-vehicle communication network 60 is required, control for starting communication with the in-vehicle communication network 60 is performed. And when it turns out that the charging apparatus 10 is not connected to the vehicle 110 or is not connected even if connected, it is meaningless to operate the communication function of the in-vehicle communication network 60. There is only wasteful power consumption, and processing for stopping this is performed. Thereby, it is possible to prevent wasteful power consumption during charging and to perform charging in a short time.

  FIG. 4 is a diagram illustrating a processing flow of an additional function of the charging communication ECU of the vehicle charging control apparatus according to the embodiment of the present invention. As described with reference to FIG. 1, even when charging communication is not established, failure diagnosis by the failure diagnosis tool 120 is being performed, and the ignition switch 90 may be turned on. . In such a case, when the communication of the in-vehicle communication network 60 is stopped, the first ECU 62 and the second ECU 63 included in the in-vehicle communication network 60 are not in failure, but are in communication. May be misdiagnosed. Accordingly, in order to cope with such a case, the charging communication ECU 50 detects a state in which the ignition switch 90 is turned on without passing through the relay 80, and describes a processing flow for performing processing corresponding to such a situation. To do. Note that the processing flow by the charging connector connection detection ECU 70 described with reference to FIG. 2 is performed before the processing flow of FIG. 4 is performed.

  In FIG. 4, in step S300, charging communication ECU 50 determines whether relay 80 is on. If the relay 80 is on, the process proceeds to step S310, and if the relay 80 is off, the processing flow is terminated. Note that the processing in step S300 is the same as that in step S200 in FIG.

  In step S <b> 310, charging communication ECU 50 starts communication with in-vehicle communication network 60 based on turning on of relay 80. Since this step is the same as step S210 in FIG. 3, the description thereof is omitted.

  In step S320, charging communication ECU 50 determines whether charging communication is not established. Since the process of this step is the same as that of step S220 of FIG. 3, the description thereof is omitted. If charging communication is established in step S320, the processing flow is terminated, and if charging communication is not established, the process proceeds to step S330.

  In step S330, the charging communication ECU 50 determines whether or not the ignition switch 90 is on based on a signal from the detection control ECU 100 or the ignition switch 90. Since the relay 80 is turned on when the ignition switch 90 is turned on and when the charging connector 12 is connected to the vehicle 110, whether the ignition switch 90 is turned on after the relay 80 is turned on. Alternatively, it cannot be determined whether the charging connector 12 is connected to the vehicle 110. Therefore, in order to distinguish the two, the charging communication ECU 50 detects the on / off state of the ignition switch 90 via a route that does not pass through the relay 80.

  In step S330, when the ignition switch 90 is on, the processing flow is terminated while the communication function of the in-vehicle communication network 60 is operated. On the other hand, if the ignition switch 90 is off, the process proceeds to step S340.

  In step S340, the charging communication ECU 50 stops the communication of the in-vehicle communication network 60. When the ignition switch 90 is off, failure diagnosis by the failure diagnosis tool 120 is not performed and charging is performed. Therefore, even if communication of the in-vehicle communication network 60 is stopped, erroneous diagnosis is performed. There is no risk of causing this. Therefore, the communication of the in-vehicle communication network 60 is stopped, the power consumption by the first ECU 62 and the second ECU 63 is prevented, and the in-vehicle battery is charged in a short time.

  As described above, since the charging communication ECU 50 has an additional function, it is possible to perform charging control of the vehicle including the case where the failure diagnosis tool 120 is connected, and it is possible to appropriately reduce power consumption during charging.

  In the embodiment described so far, the example of stopping the communication of the in-vehicle communication network 60 has been described. However, the operation of the in-vehicle communication network 60 including the first ECU 62 and the second ECU 63 can be stopped. For example, such communication is naturally stopped, and the in-vehicle network 60 can be completely stopped including consumption other than power related to communication. Therefore, in the above-described embodiment, when the communication of the in-vehicle communication network 60 is stopped, the operation of the in-vehicle communication network 60 may be stopped.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  The present invention can be used for a vehicle such as an electric vehicle that charges an in-vehicle battery or the like using an external charging device.

DESCRIPTION OF SYMBOLS 10 Charging device 11 Charging cable 12 Charging connector 20 Connector receptacle 30 Charging communication line 50 Charging communication ECU
60 In-vehicle communication network 61 Communication line 62, 63 ECU
70 Charging connector connection detection ECU
80 Relay 90 Ignition switch 100 Detection control ECU
110 Vehicle 120 Failure diagnosis tool

Claims (8)

In a charging control device for a vehicle having a power line communication system capable of charging and power line communication with the charging device by connecting the vehicle to a charging device outside the vehicle,
Charging communication control means for transmitting and receiving data necessary for charging by the charging device and the power line communication;
An in-vehicle communication network including an electronic control unit connected to the charging communication control means and supplying data necessary for the charging to the charging communication control means;
The charging control device for a vehicle, wherein the charging communication control means stops communication of the in-vehicle communication network when the power line communication with the charging device is not established at the time of charging.   2. The charging communication control unit does not stop communication of the in-vehicle communication network even when the power communication with the charging device is not established when an ignition switch of the vehicle is on. The vehicle charge control device according to claim 1. Connection of the charging device to the vehicle is performed by fitting a charging connector connected to the charging device via a charging cable into a connector receiver provided in the vehicle,
The charging control device for a vehicle according to claim 2, further comprising charging connector connection detecting means for detecting the connection of the charging device to the vehicle by fitting the charging connector to the connector receptacle. A relay is connected between the charging connector connection detecting means and the charging communication control means,
The charging connector connection detecting means turns on the relay when detecting the connection of the charging device to the vehicle,
The charging of the vehicle according to claim 3, wherein the charging communication control means starts communication with the in-vehicle network based on turning on of the relay, and then performs the power line communication with the charging device. Control device.   5. The vehicle charging control apparatus according to claim 4, wherein the charging connector connection detecting means turns on the relay when the ignition switch is on.   The charging communication control means receives information on the on / off state of the ignition switch without passing through the relay, and when the ignition switch is on in the input information, communicates with the in-vehicle communication network. The vehicle charge control device according to claim 5, wherein the vehicle charge control device is started.   2. The in-vehicle communication network includes a plurality of the electronic control units, and the electronic control units can communicate with each other when a communication function of the in-vehicle communication network is operating. The charging control device for a vehicle according to any one of claims 1 to 6.   The vehicle charging control device according to claim 1, wherein the charging device charges an in-vehicle battery.

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