JP6477547B2 - vehicle - Google Patents

Description

  The present invention relates to a vehicle, and more particularly, to control for timer charging an in-vehicle secondary battery with electric power from a power source outside the vehicle.

  A technique for charging an in-vehicle power storage device such as an electric vehicle or a hybrid vehicle with a power source outside the vehicle (hereinafter also simply referred to as “external power source”) is known. Hereinafter, the charging of the in-vehicle power storage device by the external power source is also simply referred to as “external charging”.

  As an aspect of external charging, so-called timer charging that controls a time schedule of external charging is described in Japanese Patent Laid-Open No. 2013-38933 (Patent Document 1) and the like. Patent Document 1 describes a control for automatically selecting the validity and invalidity of reserved charging, which is set by receiving information on a start time and an end time, according to a place where charging is performed.

JP 2013-038933 A

  Time management is necessary for execution of timer charging, and a charger for external charging needs to be activated in response to the arrival of the charging start time set by the timer. On the other hand, the clock function for recognizing the time is generally configured not to be provided directly on the charger side for external charging.

  Therefore, there is a problem of how to determine whether or not charging can be performed when a time discrepancy occurs between the two due to time correction of the clock by the user.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a timepiece by a user in a vehicle in which a timepiece function is not provided on the charger side for external charging. In response to the time correction, the external charging is appropriately started.

  In one aspect of the present invention, a vehicle includes a power storage device, a charger for charging the power storage device using power from a power source outside the vehicle, an input circuit, and first and second control devices. . The first control device has a time management function for managing the current date and time according to the day of the week and the time. The second control device controls the operation and stop of the charger. The input circuit is provided for the user to input an instruction to change the current date and time by the time management function. During operation, the first control device is configured to periodically transmit a first signal indicating the current date and time to the second control device. Each time the second control device receives the first signal, the second control device updates the current date and time information for specifying the day and time, and the date and time indicated by the current date and time information indicates the day and time according to the current charging schedule. The amount of change in the current date and time between the means for starting the charger when the specified charging start date and time and the first signal received in response to the reception of the first signal is greater than a predetermined amount. And a means for detecting a change input of the current date and time by the user and resetting the charging schedule when the change amount is larger than a predetermined amount.

  According to the vehicle, when the change amount of the current date and time by the user input to the input circuit is larger than a predetermined amount, the charge schedule is reset and the charge start time is newly set, while when the change amount is small, It is possible to control the start timing of external charging while maintaining the current charging start date and time setting. As a result, it is possible to appropriately control the start timing of external charging in accordance with the degree of time change of the clock by the user.

  According to the present invention, in a vehicle having a configuration in which a clock function is not provided on the charger side for external charging, external charging can be appropriately started in response to time correction of the clock by the user.

1 is a configuration example of a vehicle charging system for externally charging a vehicle according to an embodiment of the present invention. FIG. 2 is a block diagram schematically illustrating the configuration of the vehicle illustrated in FIG. 1. FIG. 2 is a block diagram illustrating a control configuration for executing timer charging according to a charging schedule in the vehicle shown in FIG. 1. It is a flowchart which shows the example of the control processing for the arrival determination of the charge start date by charge ECU. It is a conceptual diagram explaining the problem in the timer charge which arises by the user's current date change of the clock. It is the flowchart which arranged the arrival determination processing of the charge start time in the vehicle according to an embodiment of the invention. It is a conceptual diagram explaining the determination result by the control processing shown in FIG. It is a conceptual diagram explaining the counter error determination performed in the modification of this Embodiment. It is a 1st flowchart explaining the arrival determination process of the charge start time according to the modification of embodiment of this invention. It is a 2nd flowchart explaining the arrival determination process of the charge start time according to the modification of embodiment of this invention. It is a conceptual diagram explaining the determination result by the control process shown in FIG.

  FIG. 1 is a configuration example of a vehicle charging system for externally charging a vehicle according to an embodiment of the present invention.

  Referring to FIG. 1, a charging system 1 for externally charging a vehicle 10 includes a vehicle 10, a charging stand 20, a data center 30, and a smartphone 40.

  The vehicle 10 is connected to the charging station 20 through a charging cable (not shown). The charging stand 20 is shown as an example of an apparatus that supplies electric power from a power source outside the vehicle to the vehicle 10. The charging stand 20 is provided at a plurality of charging places, and is also provided outside the home, for example, in places such as service areas and shopping centers. That is, the vehicle 10 can charge the in-vehicle power storage device by the charging stand 20 at a plurality of charging locations.

  The vehicle 10 may receive power by mounting on the vehicle 10 a power receiving coil that receives power in a non-contact manner through an electromagnetic field from a power transmitting coil to which AC power is supplied from the charging station 20. Vehicle 10 is, for example, an electric vehicle such as a hybrid vehicle or an electric vehicle that can travel using electric power stored in a power storage device.

  The vehicle 10 has a configuration for external charging for charging a power storage device mounted on the vehicle with electric power supplied from the charging stand 20. Further, the vehicle 10 has a function of automatically starting external charging in accordance with a charging schedule set on a time basis. Hereinafter, external charging by such a function is also referred to as “timer charging”.

  The smartphone 40 is a communication device that can communicate with various devices. The user can display information regarding external charging of the vehicle 10 and input settings through the smartphone 40. For example, using the smartphone 40 as a tool, manual settings related to external charging (immediate charging start instruction, charging start / end time setting, or target charging level setting) and set charging schedule can be displayed. It is. The manual setting input and display can be executed using a touch panel or the like disposed in the vehicle 10.

  The data center 30 can perform various types of information processing. For example, in the data center 30, it is possible to manage electricity rate information, estimate a user's estimated departure time, and create a charging schedule.

  The vehicle 10 has a wireless communication function. The vehicle 10 can receive the charging schedule created in the data center 30 through the communication network. Alternatively, the charging schedule may be created according to the setting input by the user without passing through the data center 30. In the present embodiment, the charging schedule can be created in any manner.

FIG. 2 is an overall block diagram showing a schematic configuration of the vehicle 10.
Referring to FIG. 2, vehicle 10 includes a charging inlet 110, a charger 120, a power storage device 130, a PCU (Power Control Unit) 140, an ECU (Electronic Control Unit) 150, and a DCM (Data Communication Module). 160 and meter ECU 150. A meter panel 180 and a charging ECU 200 are provided.

  A charging connector (not shown) of a charging cable is connected to the charging inlet 110. Then, electric power from the external power source is supplied to the vehicle 10 through the charging inlet 110.

  The power storage device 130 is a power storage element configured to be chargeable / dischargeable. The power storage device 130 includes, for example, a secondary battery such as a lithium ion battery, a nickel metal hydride battery, or a lead storage battery, and a power storage element such as an electric double layer capacitor.

  The charger 120 converts an alternating current supplied from a power supply outside the vehicle through the charging inlet 110 into a direct current. Then, the charger 120 increases or decreases the voltage to a desired voltage and supplies the voltage to the power storage device 130. The charger 120 includes, for example, a rectifier circuit that converts an alternating current into a direct current and a converter that steps up or steps down the voltage. Charger 120 is not limited to such a configuration, and may be configured to supply DC power supplied from a power source outside the vehicle to power storage device 130, for example.

  PCU 140 includes a power converter (for example, an inverter) connected to a motor generator for driving a vehicle (not shown). When the power converter performs power conversion between the power storage device 130 and a motor generator (not shown), the motor generator generates a driving force or a braking force for the electric vehicle 100.

  The DCM 150 is a communication device that can wirelessly communicate with the outside. The DCM 150 is, for example, a communication module compliant with a communication standard such as W-CDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), or a wireless LAN standard such as IEEE (Institute of Electrical and Electronic Engineers) 802.11. including.

  The ECU 150 includes a CPU (Central Processing Unit) and a memory (not shown), and each device (the charger 120, the PCU 140, the ECU 120) of the vehicle 10 based on information stored in the memory and information from each sensor (not shown). The DCM 150 and the meter panel 180) are controlled.

  The meter panel 180 displays information related to the vehicle 10 and time information in a manner that the user can visually recognize. The meter panel 180 is typically configured to display information by lighting a fluorescent display tube or a light emitting diode. The display content of the meter panel 180 is controlled by the ECU 150. As will be described later, ECU 150 has a time management (clock) function for detecting the current date and time. It is assumed that vehicle 10 according to the present embodiment does not have a calendar function for specifying a date, and the current date and time is indicated by specifying the day of the week and the time.

  Charging ECU 200 controls charger 120. Therefore, the charging ECU 200 controls the operation and stop of the charger 120 according to the time schedule, whereby timer charging can be realized. On the other hand, the charging ECU 200 does not have a time management function (clock). For this reason, in order to start and start external charging according to the charging schedule, the charging ECU 200 needs to control the starting timing of the charger 120 with the exchange of information with the ECU 150 having a time management function. .

  FIG. 3 is a block diagram illustrating a control configuration for executing timer charging according to the charging schedule in vehicle 10.

  Referring to FIG. 3, ECU 150 has a clock 175 for detecting the current date and time (day of the week and time). That is, the time management function is realized by the clock 175. For ECU 150, an input circuit 178 for accepting a change input to clock 175 is provided.

  For example, the input circuit 178 may be externally attached as a push switch that can rotate with respect to the meter panel 180, and is provided in the form of a soft switch on an input screen (liquid crystal panel) separate from the meter panel 180. Also good. The input circuit 178 can be provided in any manner as long as a user instruction for changing the time can be input. In response to a user input to the input circuit 178, the current date and time recognized by the clock 175 is changed.

  Charging ECU 200 does not have a time management function, but includes a counter 210 for measuring elapsed time according to an internal clock having a predetermined cycle. The charging ECU 200 can detect the elapsed time length from a specific time point based on the count value CNT by the counter 210.

  The ECU 150 and the charging ECU 200 are connected by a communication path 190 formed in a wired or wireless manner. That is, information can be transmitted and received between ECU 150 and charging ECU 200.

  A charging setting input by the user is input to charging ECU 200. For example, the charging ECU 200 inputs a charging start date and / or a charging end date and time for an input screen (not shown) provided in the passenger compartment. When only the charging end time is input, the charging start date and time can be set by back calculation from the input charging end date and time with estimation of the required charging time for charging the required charge amount.

  Alternatively, the charging start date and time may be set by inputting a charging schedule created in the data center 30 (FIG. 1) to the ECU 150 in response to an input to the smartphone 40 (FIG. 1). In this case, the charging start date and time according to the charging schedule is transmitted from ECU 150 to charging ECU 200.

  ECU 150 is operated and turned on when vehicle 10 is in operation, for example, when an ignition switch is turned on (hereinafter also simply referred to as “IG on”). The ECU 150 outputs a current date / time signal Stz indicating the current date / time recognized by the clock 175 to the charging ECU 200 at a predetermined cycle during operation (on period). The charging ECU 200 updates the current date and time recognition value Tz in response to receiving the current date and time signal Stz. Thereby, when the ECU 150 is operated, the charging ECU 200 can indirectly detect the current date and time based on the current date and time recognition value Tz. The input circuit 178 is also configured so that user input is valid during the operation period of the ECU 150.

  On the other hand, when vehicle 10 is not in operation, for example, when the ignition switch is turned off (hereinafter, also simply referred to as “IG off”), ECU 150 is stopped (turned off) and put into a standby state. In the standby state, while only the minimum functions including the time management function by the clock 175 continue to operate, the complicated arithmetic processing and communication with the outside are stopped, thereby suppressing power consumption.

  During the off period of the ECU 150, the charging ECU 200 cannot receive the current date / time signal Stz, and therefore cannot update the current date / time recognition value Tz. On the other hand, the elapsed time from when the ECU 150 is turned off can be detected by the counter 210. Therefore, every time the current date / time signal Stz is received, if the time length until the charging start date / time is calculated, even if the ECU 150 is turned off, the increment of the count value CNT from that time corresponds to the time length. When the determination value to be reached is reached, arrival at the charging start date and time can be detected.

  Therefore, the charging ECU 200 can be in a standby state in the same manner as the ECU 150 in the standby period until the charging start date and time is reached. In the standby state of the charging ECU 200, it is necessary to continue the operation of the counter 210 by generating the internal clock.

  FIG. 4 shows a flowchart for explaining an example of a control process for determining the arrival of the charging start date and time by the charging ECU 200.

  Referring to FIG. 4, charging ECU 200 determines whether or not current date / time signal Stz has been updated in step S200. When the current date / time signal Stz is updated, the charging ECU 200 sets the determination value Cth based on the latest current date / time signal Stz in step S210. The determination value Cth is set in proportion to the time length from the current date / time recognized by the charging ECU 200 according to the latest current date / time signal Stz (hereinafter also referred to as the current date / time recognition value Tz) to the charge start date / time Tst according to the current charging schedule. Is done. In step S210, the count value CNT is also cleared (CNT = 0).

  Further, in step S220, charging ECU 200 counts up by incrementing count value CNT of counter 210 in accordance with an internal clock having a predetermined period, and in step S230, count value CNT is compared with determination value (S210). .

  When count value CNT reaches determination value Cth (when YES is determined in S230), charging ECU 200 advances the process to step S300a to determine arrival at charging start date and time Tst. In response to this, the charging ECU 200 operates the charger 120 to start external charging.

  Until the count value CNT reaches the determination value Cth (NO determination in S230), the charging ECU 200 repeats the processes of steps S210 to S230. As a result, during the period in which the current date / time signal Stz is input (the ON period of the ECU 150), the determination value Cth is updated every time the current date / time signal Stz is received. That is, the arrival determination at the charging start date and time Tst is executed by counting up at the counter 210 starting from the time when the current date and time signal Stz was last received before the charging start date and time Tst. In the present embodiment, the cycle in which the count value CNT is incremented is shorter than the cycle in which the current date / time signal Stz is input from the ECU 150.

  On the other hand, the determination value Cth is not updated during a period in which the current date / time signal Stz is not input (an OFF period of the ECU 150). However, the starting point can be executed when the current date / time signal Stz is received last.

  However, in the arrival determination of the charging start date and time as described above, it may be difficult to determine when the current date and time of the clock 175 is changed using the input circuit 178. Such a case will be described with reference to FIG.

  Referring to FIG. 5, a case is considered where the current date and time is changed from T0 to T1 by the user performing an operation to change the current date and time of the clock on input circuit 178. At this time, the current date and time T0 before the change is earlier than the charge start date and time Tst according to the current charge schedule, while the current date and time T1 after the change is later than the charge start date and time Tst.

  Therefore, while it is determined that the charging start date / time is not reached at T0, there is a problem how to execute the determination at T1. According to the control process of FIG. 4, the current date and time signal Stz indicating T <b> 1 is output from the ECU 150 to the charging ECU 200, so that the time change by the user is reflected in the determination in the charging ECU 200.

  However, the arrival of the charging start date and time Tst cannot be determined by counting up the counter 210 starting from this point. On the other hand, when T1 after the time change has passed the current charging start date and time Tst, there is a concern that the charging start date and time Tst is made valid and the external charging is started. For example, when a time change is input beyond the day of the week, it cannot be said that it is appropriate to start external charging immediately with the time change as a trigger, and there is a possibility that the response may be against the user's intention. is there.

  Therefore, in the vehicle according to the present embodiment, the charge start date / time arrival determination process is executed by the control process shown in FIG. The control process shown in FIG. 6 is repeatedly executed at a period equivalent to the input period of the current date / time signal Stz. Also, the control process shown in FIG. 4 is executed in parallel with the control process of FIG.

  Referring to FIG. 6, charging ECU 200 determines in step S100 whether current date / time signal Stz is input or not. Therefore, every time current date signal Stz is input from ECU 150, step S100 is determined as YES.

  When the charging ECU 200 receives the current date / time signal Stz (YES in S100), the charging ECU 200 updates the current date / time recognition value Tz based on the input current date / time signal Stz in step S110, and in step S120, recognizes the current date / time recognition. A change amount ΔTz of the value Tz is calculated.

  In step S130, charging ECU 200 compares the magnitude (absolute value) of ΔTz calculated in step S120 with determination value Tth1. The determination value Tth1 is appropriately designed to be a value for detecting a significant time change input by the user.

  When | ΔTz | ≦ Tth1 (when NO is determined in S130), charging ECU 200 does not detect a time change input by the user, proceeds to step S140, and current date / time recognition value Tz follows the current charging schedule. It is determined whether or not the charging start date and time Tst has passed. When the current date and time recognition value Tz has passed the charging start date and time Tst, the process proceeds to step S300b, and the arrival at the charging start date and time Tst is detected as in step S300a of FIG. Thereby, when the charging ECU 200 operates the charger 120, external charging is started.

  On the other hand, when the current date and time recognition value Tz has not reached the charging start date and time Tst, the charging ECU 200 advances the process to step S150 and determines that the charging start date and time Tst has not been reached. Thereby, external charging is waited. That is, the start of external charging in response to reception of the current current date / time signal Stz is postponed.

  In addition, the arrival at the charging start date and time Tst in step S300b is not detected except for the reception timing of the current date and time signal Stz (when NO is determined in S100). As described above, the control process shown in FIG. 4 is also executed together with the control process of FIG. 6, so that the charging start date and time Tst is reached by step S300a of FIG. Once detected, external charging may be initiated. That is, in the ON period of ECU 150 in which the current date / time signal Stz is continuously maintained at a constant cycle, it is possible to reliably detect the arrival of the charging start date / time Tst by using steps S300a and S300b in an interpolating manner.

  Further, even when the current date / time signal Stz is not continuously input due to the ECU 150 being turned off, the arrival of the charging start date / time Tst can be detected by the control process of FIG.

  When | ΔTz |> Tth1 (when YES is determined in S130), charging ECU 200 inputs a time change by the user in step S160 and proceeds to step S170 to reset the charging schedule. Thus, the next external charging timing is formulated based on the current date and time (T1 in FIG. 5) changed by the user. Thereby, the charging start date and time Tst is newly set. Thereafter, the arrival determination at the newly set charging start date and time is executed according to FIG. 4 and FIG.

FIG. 7 shows a conceptual diagram in which the determination results obtained by the control process shown in FIG. 6 are arranged.
The horizontal axis in FIG. 7 represents the current date and time recognition value Tz updated in step S110 in FIG. Since Tp on the horizontal axis is the current date / time recognition value corresponding to the previous current date / time signal Stz, it is hereinafter referred to as the previous recognition value Tp. Ta represents the date and time that is Tth1 earlier than the previous recognition value Tp, and Tb represents the date and time that has passed Tth1 from the previous recognition value Tp.

  When Tz is before Ta or after Tz is after Tb, S130 in FIG. 6 is determined to be YES, so that the time change input by the user is detected and the charging schedule is reset. The That is, the charging start date and time Tst is newly set.

  On the other hand, when Tz is within the period of Ta to Tb, arrival determination that maintains the current charging start date and time Tst is performed without changing the charging schedule by the time change input by the user. As a result, when Tz is after Tst, the arrival of the charging start date / time is detected, while when Tp is before Tst, it is determined that the charging start date / time has not been reached.

  As described above, in the vehicle according to the present embodiment, when the change amount of the current date and time by the user's change input is larger than the predetermined amount (Tth1), the charging schedule is reset and the charging start date and time is newly set. When the amount of change is small, the setting of the current charging start date and time can be maintained and the start timing of external charging can be controlled. As a result, it is possible to start external charging at an appropriate timing in accordance with the time change amount of the clock by the user.

(Modified example of arrival date / time determination)
Next, as a modified example of the embodiment of the present invention, a charging start date / time arrival determination process for dealing with the internal clock error of the charging ECU 200 will be described.

  In the modification of the embodiment of the present invention, the counter error determination described in FIG. 8 is further executed in the determination of the arrival of the charging start date and time during the off period of the ECU 150 such as the IG off period.

  Referring to FIG. 8, since current date / time signal Stz is not continuously input in the off period (standby state) of ECU 150, charging ECU 200 reaches charging start date / time Tst based on count value CNT by counter 210. Determine. In FIG. 8, the count value CNT reaches the determination value Cth at Ty.

  At this time, whether or not Ty matches the charging start date and time Tst depends on the accuracy of the increment cycle of the count value CNT, that is, the accuracy of the internal clock. In other words, depending on the error of the internal clock, an error Ter (hereinafter also referred to as counter error Ter) may occur between Ty and the charging start date and time Tst.

  Therefore, in the modification of the embodiment of the present invention, the counter error determination is started by requesting the ECU 150 for the current date / time signal Stz at the timing (Ty) when the count value CNT reaches the determination value Cth.

  FIGS. 9 and 10 are flowcharts for explaining the arrival determination process for the charging start date and time according to the modification of the present embodiment. The control process of FIG. 9 is executed during an off period of the ECU 150 in which the input of the current date / time signal Stz is continuously stopped. On the other hand, the control process of FIG. 10 is executed during the ON period of the ECU 150 in which the current date and time signal Stz is continuously input. That is, in the modification of the present embodiment, instead of the control process of FIGS. 4 and 6, the control process of FIGS. 9 and 10 is executed, whereby the arrival determination of the charging start date and time is executed.

  Referring to FIG. 9, charging ECU 200 determines in step S200 # whether or not the current date / time signal Stz is not continuously input. For example, when a new current date / time signal Stz is not input beyond a predetermined period, step S200 # is determined as YES, and the processes after step S210 # are started.

  In step S210 #, charging ECU 200 sets determination value Cth based on the last received current date / time signal Stz. The determination value Cth is set in proportion to the length of time from the date / time according to the current date / time signal Stz to the charge start date / time Tst according to the current charging schedule, as in step S210 (FIG. 4). Further, the charging ECU 200 determines the arrival of the charging start date and time Tst using the count value CNT of the counter 210 according to the internal clock of a predetermined cycle in steps S220 to S230 similar to FIG.

  When count value CNT reaches determination value Cth (when YES is determined in S230), charging ECU 200 activates counter error determination in step S240 #. As a result, the charging ECU 200 requests the ECU 150 (standby state) to transmit the current date and time signal Stz. In response to this, ECU 150 operates temporarily and outputs current date / time signal Stz indicating the current date / time recognized by the time management function continuously operating even in the standby state to charging ECU 200.

  In step S250, charging ECU 200 receives current date / time signal Stz output from ECU 150 in response to step S240 #, and updates current date / time recognition value Tz. Further, in step S260, charging ECU 200 calculates counter error ΔTer corresponding to the time difference between updated current date / time recognition value Tz and charging start date / time Tst. In step S270, the calculated counter error magnitude | ΔTer | is compared with the determination value Tth2.

  When | ΔTer | <Tth2 (when YES is determined in S270), that is, when the counter error is small, the charging ECU 200 advances the process to step S280 to determine whether or not the current date / time recognition value Tz has passed the charging start date / time Tst. Determine whether. When the current date and time recognition value Tz has passed the charging start date and time Tst (when YES is determined in S280), the process proceeds to step S300a similar to FIG. 4, and arrival at the charging start date and time Tst is detected. Thereby, when the charging ECU 200 operates the charger 120, external charging is started.

  On the other hand, when the current date and time recognition value Tz has not reached the charging start date and time Tst (when NO is determined in S280), the charging ECU 200 corrects the count value CNT based on the counter error ΔTer in step S330. . As a result, the count value CNT is corrected to a value obtained by subtracting from the determination value Cth according to the counter error ΔTer. Then, charging ECU 200 returns the process to step S220, and operates counter 210 until count value CNT reaches determination value Cth (S220, S230). When the corrected count value CNT reaches the counted determination value Cth (YES in S230), the current date / time signal Stz is received again from the ECU 150 in steps S240 # to S280, and the counter error | ΔTer | Are compared with the determination value Tth2 (S270) and the current date / time recognition value Tz is compared with the charging start date / time Tst (S280). That is, when the counter error is small (when YES is determined in S270), the arrival of the charging start date and time Tst is detected based on the current date and time signal Stz received in response to the count value CNT reaching the determination value Cth. (S280, S300a).

  On the other hand, when | ΔTer | ≧ Tth2 is detected (NO determination in S270), charging ECU 200 proceeds to step S320 to detect that there is a counter error, that is, an internal clock error. And about this charge schedule, giving priority to avoiding charge shortage, external charging is started. That is, in step S320, charging ECU 200 immediately operates charger 120. Thereby, in addition to the effect of reducing power consumption by setting the ECU 150 and the charging ECU 200 in the standby state, external charging is not performed even when a time recognition shift between the ECUs due to an internal clock error occurs. Can be prevented.

  Furthermore, the current counter error ΔTer can be learned and reflected in the calculation of the determination value Cth in the next step S210 #. For example, if step S230 # is determined to be YES before reaching the charging start date and time Tst (that is, ΔTer <0 and | ΔTer | ≧ Tth2), learning is performed so as to increase the determination value Cth. Can do.

  It is noted that charging ECU 200 performs the control processing of FIG. 10 without executing the processing after step S210 # during the ON period of ECU 150 (when NO is determined in step S200 #) where current date / time signal Stz is continuously input. Execute.

  Referring to FIG. 10, charging ECU 200 determines in step S100 # whether or not the current date / time signal Stz is continuously input. That is, step S100 # is determined as YES during the ON period of ECU 150, and shows the determination result opposite to step S200 # in FIG. When NO is determined in step S100 #, the control process described above with reference to FIG. 9 is executed.

  The charging ECU 200 uses the current date / time recognition value Tz sequentially updated by the received current date / time signal Stz in steps S110 to S170 similar to FIG. 6 during the ON period of the ECU 150 (when YES is determined in S100 #), The arrival determination at the charging start date and time Tst is executed. As described with reference to FIG. 6, the charging schedule can be reset when the change amount of the current date and time by the user's change input is larger than the predetermined amount (Tth1) in steps S130, S160, and S170.

FIG. 11 is a conceptual diagram in which the determination results obtained by the control process shown in FIG. 9 are organized.
The horizontal axis in FIG. 11 indicates the current date and time recognition value Tz updated in step S250 in FIG. Tc on the horizontal axis indicates a date and time that is back by Tth2 from the charging start date and time Tst, and Td indicates a date and time that has passed Tth2 from the charging start date and time Tst.

  When Tz is within the period of Tc to Td and the counter error | ΔTer | is smaller than the determination value Tht2, the arrival of the charging start date and time is detected if Tz is after Tst. On the other hand, if Tz is earlier than Tst, it is determined that the charge start date / time has not been reached, and after correcting the count value CNT (S330 in FIG. 9), the counter 210 again performs the charge start date / time. The arrival at Tst is determined.

  On the other hand, when Tz is earlier than Tc, or when Tz is later than Td, S270 in FIG. 9 is determined as NO, so that there is a counter error, that is, an internal clock error. Detect what to do. Then, giving priority to avoiding a shortage of charge, external charging is started immediately.

  As described above, according to the arrival determination of the charging start date and time shown in FIGS. 9 and 10, in addition to the response to the change input of the current date and time by the user, the counter error (that is, the internal clock error) of the charging ECU 200 is added. In response to this, external charging can be appropriately started.

  In the present embodiment and its modifications, as shown in FIGS. 2 and 3, the ECU 150 that controls the entire vehicle 10 has been described as having a time management function. However, the present invention is applied in this way. However, the present invention is not limited to such a configuration example. For example, even when the ECU dedicated to controlling the meter panel 180 and disposed separately from the ECU 150 has a time management function, transmission and reception of the current date and time signal Stz between the charging ECU 200 and the ECU, The arrival determination on the same charging start date and time can be executed. That is, the present invention can be commonly applied to timer charging in a configuration in which an ECU that controls a charger for external charging and an ECU that executes time management are separately arranged.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Charging system, 10 Vehicle, 20 Charging stand, 30 Data center, 40 Smartphone, 110 Charging inlet, 120 Charger, 130 Power storage device, 150 ECU, 175 Clock, 178 Input circuit, 180 Meter panel, 190 Communication path, 200 Charging ECU, 210 counter, CNT count value, Cth, Tth1, Tth2 judgment value, ECU main, Stz current date signal, Ter counter error, Tst charge start date, Tz current date recognition value.

Claims (1)

A power storage device;
A charger for charging the power storage device using electric power from a power source external to the vehicle;
A first control device having a time management function for managing the current date and time according to the day of the week and the time;
An input circuit for a user to input an instruction to change the current date and time by the time management function;
A second control device for controlling the operation and stop of the charger,
The first control device is configured to periodically transmit a first signal indicating the current date and time to the second control device during operation.
The second control device includes:
Means for updating current date and time information for specifying the day of the week and the time each time the first signal is received;
Means for activating the charger when the date and time indicated by the current date and time information reaches a charging start date and time that specifies the day of the week and the time according to a current charging schedule;
In response to reception of the first signal, it is determined whether or not the amount of change in the current date and time with the first signal received last time is greater than a predetermined amount, and the amount of change is And a means for detecting a change input of the current date and time by a user and resetting the charging schedule when larger than a fixed amount.

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