Charging system for vehicle

Abstract

The invention provides a charging system for a vehicle. An input device accepts, from a user of the vehicle, an input operation regarding a scheduled departure time of the vehicle. The setting unit sets a charging target SOC indicating a charging target of the SOC of the power storage device on the basis of the predetermined departure time received by the input device. The charging control unit controls the charging of the power storage device by the power supply equipment so that the SOC of the power storage device reaches the charging target SOC before the predetermined departure time. The storage device associates and stores information pertaining to the actual result of the departure time of the vehicle and information pertaining to the set history of the charging target SOC. The setting unit acquires a reference time, which is a predicted value of the departure time, and a reference SOC, which is a predicted value of the charging target SOC, by performing statistical processing on the information stored in the storage device. The setting unit sets the charging target SOC by changing the reference SOC on the basis of the time difference between the predetermined departure time received by the input device and the reference time.

Description

Technical Field

[0001] The present disclosure relates to a charging system for a vehicle equipped with a power storage device. Background Art

[0002] Japanese Unexamined Patent Application Publication No. 2022-146415 discloses a charging control device that charges a storage battery mounted on a vehicle using electric power supplied from an external power source. The charging control device determines, based on history information indicating the usage status and charging status of the storage battery, a charging cycle pattern that is closest to the user's charging habit from among a plurality of charging cycle patterns. The charging control device causes the charging completion SOC, the charging start SOC, and the allowable lower limit SOC to be displayed on a display unit in the determined charging cycle pattern. When the charging completion SOC is set to be lower according to a user operation, the charging control device controls the storage battery to charge based on the charging completion SOC after the setting change. Summary of the Invention

[0003] In a user's charging behavior, there is timed charging in which a scheduled departure time of a vehicle next time is set and the charging of the storage battery is completed before the scheduled departure time. According to the above charging control device, the charging completion SOC during timed charging is displayed according to the charging cycle pattern determined by the user's timed charging habit.

[0004] However, when a user wants to perform timed charging different from the charging habit, for example, when the scheduled departure time of the vehicle next time is different from the usual departure time, the charging plan for timed charging cannot be changed. In addition, as the scheduled departure time of the vehicle changes, the usage status of the storage battery may also change, but the charging completion SOC cannot be set in a manner that can cope with the change in the usage status of the storage battery.

[0005] For this reason, it is considered that the user sets the charging completion SOC every time the scheduled departure time of the vehicle is set, but this increases the time and labor of the user. In addition, depending on the user, it is sometimes not easy to estimate the usage status of the storage battery to set an appropriate charging completion SOC. As a result, there is a concern that the usability when setting timed charging is reduced.

[0006] The present disclosure has been made to solve the above problems, and an object of the present disclosure is to improve the usability when setting timed charging for a vehicle equipped with a power storage device.

[0007] A charging system for a vehicle according to one aspect of the present disclosure includes: a vehicle equipped with a power storage device; a power supply device configured to be able to charge the power storage device from outside the vehicle; an input device; a setting unit; a charging control unit; and a storage device.

[0008] The input device receives an input operation regarding the scheduled departure time of the vehicle from the user of the vehicle.

[0009] The setting unit sets a charging target SOC indicating the charging target of the SOC of the power storage device based on the scheduled departure time received by the input device.

[0010] The charging control unit controls the charging of the power storage device by the power supply device so that the SOC of the power storage device becomes the charging target SOC before the scheduled departure time.

[0011] The storage device stores the information related to the actual result of the departure time of the vehicle and the information related to the setting history of the charging target SOC in association with each other.

[0012] The setting unit obtains a predicted value of the departure time, that is, a reference time, and a predicted value of the charging target SOC, that is, a reference SOC, by statistically processing the information stored in the storage device.

[0013] The setting unit changes the reference SOC according to the time difference between the scheduled departure time received by the input device and the reference time, and thereby sets the charging target SOC.

[0014] According to the above structure, the charging target SOC during timed charging is automatically set according to the user input related to the scheduled departure time of the next vehicle. Therefore, it is not necessary for the user to input the charging target SOC, which reduces the time and labor of the user. In addition, the reference time and the reference SOC derived from the information related to the actual usage result of the vehicle and the setting history of the charging target SOC are used to set the charging target SOC based on the scheduled departure time. Therefore, the usage status of the power storage device generated by the next driving can be estimated and the charging target SOC can be appropriately set. Therefore, the usability when setting timed charging can be improved.

[0015] Preferably, when the time difference between the scheduled departure time and the reference time is equal to or less than a preset threshold value, the setting unit sets the charging target SOC to the reference SOC.

[0016] When the scheduled departure time coincides with the reference time, it is determined that the charging target SOC also coincides with the reference SOC, and thereby the charging target SOC can be automatically set to an appropriate value reflecting the user's usage habit of the vehicle and the execution habit of timed charging.

[0017] Preferably, when the time difference between the scheduled departure time and the reference time is greater than the threshold value, (1) the setting unit sets the charging target SOC to a value higher than the reference SOC when the scheduled departure time is earlier than the reference time.

[0018] Preferably, when the time difference between the scheduled departure time and the reference time is greater than a threshold value, the setting unit sets the charging target SOC to a value lower than the reference SOC when the scheduled departure time is later than the reference time.

[0019] Accordingly, even when the scheduled departure time deviates from the reference time, it is possible to estimate the usage status of the power storage device and set the charging target SOC to an appropriate value.

[0020] Preferably, the setting unit obtains the reference time by statistically processing the relevant information on the actual results of the departure times on the same day of different weeks as the scheduled departure time.

[0021] Accordingly, it is possible to obtain the reference time based on the user's usage habits of the vehicle.

[0022] Preferably, the setting unit obtains the reference SOC by statistically processing the relevant information on the setting history of the charging target SOC on the same day or the same time period of different weeks as the scheduled departure time.

[0023] Accordingly, it is possible to obtain the reference SOC based on the user's execution habits of timed charging.

[0024] Preferably, the charging system of the vehicle further includes a reporting device that reports the charging target SOC set by the setting unit to the user.

[0025] The input device is configured to receive a user input for changing the charging target SOC.

[0026] The setting unit changes the setting of the charging target SOC according to the user input.

[0027] Accordingly, the user can appropriately change the charging target SOC according to the next driving plan of the vehicle.

[0028] According to the present disclosure, it is possible to improve the usability when setting the timed charging of a vehicle equipped with a power storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The features, advantages, technology, and industrial significance of the embodiments of the present invention are described as follows with reference to the accompanying drawings, in which the same reference numerals denote the same elements.

[0030] Figure 1 It is a diagram showing a structural example of a vehicle to which the charging system of the application embodiment is applied.

[0031] Figure 2 It is a diagram showing a schematic configuration of the charging system of the vehicle according to the embodiment.

[0032] Figure 3This is a diagram showing an example of a setting screen for a charging plan of a touch panel display shown on a user terminal.

[0033] Figure 4 This is a flowchart showing an example of a process for setting a charging target SOC during scheduled charging.

[0034] Figure 5 This is a diagram explaining the information stored in the storage device of the server.

[0035] Figure 6 This is a flowchart showing another example of a process for setting a charging target SOC during scheduled charging. Detailed Implementation Modes

[0036] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, the same or corresponding parts in the drawings are denoted by the same reference numerals, and their description will not be repeated.

[0037] Structure of the Vehicle

[0038] Figure 1 This is a diagram showing an example of the structure of a vehicle of a vehicle charging system to which this embodiment is applied. As Figure 1 shown, the vehicle 50 includes a storage battery 130 that stores electric power for traveling, an inlet 110, a charger / discharger 120, monitoring modules 121 and 131, a traveling drive unit 140, an electronic control unit (ECU) 150, a human machine interface (HMI) 160, a navigation system (hereinafter also referred to as "NAVI") 170, and a communication device 180.

[0039] The storage battery 130 is, for example, a secondary battery such as a lithium ion battery or a nickel metal hydride battery, or an electric double layer capacitor. The storage battery 130 corresponds to an embodiment of the "electric power storage device". The vehicle 50 may be a pure electric vehicle that can travel only using the electric power stored in the storage battery 130. The vehicle 50 may also be a plug-in hybrid vehicle that can travel using both the electric power stored in the storage battery 130 and the output of an engine.

[0040] The monitoring module 131 monitors the state of the storage battery 130. The monitoring module 131 includes various sensors that detect the state of the storage battery 130 (for example, voltage, current, and temperature), and outputs the detection results to the ECU 150. The ECU 150 can obtain the state of the storage battery 130 (for example, voltage, current, temperature, state of charge (SOC), and internal resistance) based on the output of the monitoring module 131.

[0041] The electric vehicle supply equipment (EVSE) 40 is a vehicle power supply facility. The EVSE 40 includes a power supply circuit 41. The EVSE 40 is connected to a charging cable 42. The charging cable 42 has a connector 43 at the front end and a power line inside.

[0042] The connection port 110 is configured to be able to connect to the connector 43 of the charging cable 42. By connecting the connector 43 of the charging cable 42 to the connection port 110, the vehicle 50 is electrically connected to the EVSE 40, and power can be supplied from the EVSE 40 to the vehicle 50 through the charging cable 42. Thus, in the vehicle 50, external charging (i.e., charging of the battery 130 with power from outside the vehicle) can be performed.

[0043] The charger / discharger 120 is arranged between the connection port 110 and the battery 130. The charger / discharger 120 includes a relay and a power converter (such as a bi-directional converter) that switches the connection / cut-off of the power path from the connection port 110 to the battery 130. The power converter converts the power received from the connection port 110 into power suitable for charging the battery 130 (i.e., power for external charging), and outputs the power to the battery 130. The relay and the power converter are controlled by the ECU 150.

[0044] The monitoring module 121 monitors the state of the charger / discharger 120. The monitoring module 121 includes various sensors that detect the state of the charger / discharger 120 (such as voltage and current input / output to / from the power converter), and outputs the detection results to the ECU 150.

[0045] The driving unit 140 includes a power control unit (PCU) and an electric generator (MG), and uses the power stored in the battery 130 to drive the vehicle 50. The PCU includes a power converter, a system main relay (SMR), and a control device. The control device controls the power converter and the relay according to instructions from the ECU 150. The MG is, for example, a three-phase AC electric generator, and is driven by the PCU to rotate the drive wheels W. The MG supplies the regenerated power to the battery 130. The SMR switches the connection / cut-off of the power path from the battery 130 to the PCU.

[0046] The ECU 150 includes a processor 151, a random access memory (RAM) 152, a storage device 153, and a timer 154. The processor 151 uses, for example, a central processing unit (CPU). The RAM 152 functions as a working memory for temporarily storing data processed by the processor 151. The timer 154 is configured to notify the processor 151 of the arrival of a set time.

[0047] The storage device 153 includes, for example, a read-only memory (ROM) and a non-volatile memory. In the storage device 153, in addition to programs, information used in the programs is also stored. By the processor 151 executing the programs stored in the storage device 153, various controls of the ECU 150 are performed. These various controls are not limited to being executed by software, and can also be executed by dedicated hardware.

[0048] The information stored in the storage device 153 includes information related to the usage history of the vehicle 50, information related to the execution history of external charging, and information related to the usage plan of the vehicle 50. The usage history of the vehicle 50 includes the driving history of the vehicle 50 (e.g., the departure time, driving route, and driving time of the vehicle 50). The execution history of external charging includes the charging location, the specifications of the power supply equipment installed at the charging location, and the execution history of timed charging. Timed charging means that external charging is performed in such a way that the SOC of the battery 130 becomes the charging target SOC before the scheduled departure time of the vehicle 50. In order to avoid the situation where the SOC of the battery 130 decreases when the vehicle 50 departs, the charging of the battery 130 is controlled by the processor 151 so that the SOC reaches the charging target SOC at the scheduled departure time. The execution history of timed charging includes the setting history of the charging target SOC.

[0049] The usage plan of the vehicle 50 includes the driving plan of the vehicle 50 (e.g., the scheduled departure time and driving route of the vehicle 50) and the charging plan of the battery 130 (e.g., the charging target SOC).

[0050] The HMI 160 includes an input device and a display device. The HMI 160 may also include a touch panel display. The HMI 160 may also include a dashboard and / or a head-up display. The HMI 160 may also include a smart speaker that accepts voice input. The user can use the HMI 160 to register the above usage plan of the vehicle 50 in the storage device 153. The HMI 160 corresponds to an embodiment of the "input device" and the "reporting device".

[0051] The NAVI 170 includes a touch panel display, a global positioning system (GPS) module, a processor, and a storage device. The storage device stores map information. The touch panel display accepts input from the user and displays the map and other information. The NAVI 170 receives signals from GPS satellites and uses the received signals to detect the position of the vehicle 50. The NAVI 170 refers to the map information and performs a route search for finding the best route from the current position of the vehicle 50 to the destination. The NAVI 170 corresponds to an example of the "input device" and the "reporting device".

[0052] The communication device 180 includes various communication I / Fs (interfaces). The ECU 150 communicates with a communication device outside the vehicle 50 via the communication device 180. The communication devices outside the vehicle 50 include the EVSE 40, the server 30 described later, and the user terminal 80. The ECU 150 transmits the information stored in the storage device 153 (information related to the usage history of the vehicle 50, information related to the execution history of external charging, and information related to the usage plan of the vehicle 50) to the server 30 via the communication device 180.

[0053] Structure of the vehicle's charging system

[0054] Figure 2 is a diagram showing a schematic structure of the vehicle's charging system according to the present embodiment. As Figure 2 shown, the vehicle's charging system 1 includes a server 30, an EVSE 40, a vehicle 50, and a user terminal 80.

[0055] The user terminal 80 corresponds to an embodiment of the "terminal device" carried by the user of the vehicle 50. In Figure 2 the example, the user terminal 80 is a smart phone, but any terminal device can be adopted. A predetermined application software (hereinafter, simply referred to as "application") is installed in the user terminal 80. The user terminal 80 can exchange various information with the communication devices 180 mounted on the server 30 and the vehicle 50 via the above application. The user can operate the above application through the touch panel display of the user terminal 80, for example. In addition, the touch panel display of the user terminal 80 can report information to the user.

[0056] The server 30 is configured to be able to communicate with the vehicle 50 and the user terminal 80 respectively. The server 30 includes a control device 31, a storage device 32, and a communication device 33. The control device 31 includes a processor, performs predetermined information processing, and controls the communication device 33.

[0057] The storage device 32 stores programs executed by the control device 31 and various information used in the programs. The various information includes the information received from the ECU 150 of the vehicle 50 (information related to the usage history of the vehicle 50, information related to the execution history of external charging, and information related to the usage plan of the vehicle 50).

[0058] The communication device 33 includes various communication I / Fs. The control device 31 communicates with the user terminal 80 and the communication device 180 of the vehicle 50 via the communication device 33 and receives information. The server 30 updates the information in the storage device 32 based on the received information.

[0059] Timed charging of the storage battery

[0060] Next, the timed charging of the storage battery 130 will be described. In the present embodiment, the user can operate the user terminal 80, the HMI 160, or the NAVI 170 to set a charging plan related to the timed charging of the storage battery 130. Hereinafter, an example in which the user operates the user terminal 80 to set a charging plan will be described.

[0061] Figure 3 FIG. is an example of a setting screen for a charging plan displayed on the touch panel display of the user terminal 80. As Figure 3 shown, the setting screen includes an operation unit 200, a setting bar 210, display bars 212, 214, and buttons 216, 218.

[0062] The operation unit 200 accepts user input related to the next usage reservation of the vehicle 50. The next usage reservation of the vehicle 50 includes the scheduled departure date and the scheduled departure time of the next vehicle 50. By operating the operation unit 200, the user can set the scheduled departure date and the scheduled departure time of the next vehicle 50.

[0063] The display bar 212 is displayed on the setting bar 210 and displays the current SOC of the storage battery 130 in the form of the length of the bar. The display bar 214 is displayed on the setting bar 210 and displays the set value of the charging target SOC in the next timed charging in the form of the length of the bar.

[0064] In the present embodiment, based on the next usage reservation (scheduled departure date and scheduled departure time) of the vehicle 50 accepted by the operation unit 200, the charging target SOC is automatically set, and a display bar 214 indicating the set value of the charging target SOC is displayed on the setting bar 210. Thereby, the time and labor for the user to input the charging target SOC can be saved. The method for setting the charging target SOC will be described in detail later.

[0065] The button 216 is a button for enabling the user to change the setting of the charging target SOC displayed on the setting bar 210. After the user operates the button 216, by touching the right end of the display bar 214 and sliding it in the left - right direction, the user can change the charging target SOC.

[0066] The button 218 is a button for completing the usage reservation of the vehicle 50 and the setting of the charging target SOC. The user can confirm each setting by touching the button 218.

[0067] Setting of the charging target SOC

[0068] Figure 4 FIG. is a flowchart showing an example of a process for setting the charging target SOC in timed charging. When the user sets a charging plan using the user terminal 80, it is executed by the user terminal 80 and the server 30Figure 4 A series of processes shown in the flowchart. Server 30 corresponds to an embodiment of the "setting unit".

[0069] In the figure, the processes executed by the user terminal 80 are shown on the left side, and the processes executed by the server 30 are shown on the right side. Each step is implemented by software processing based on the processor in the user terminal 80 and the control device 31 of the server 30, but can also be implemented by electronic circuits (hardware) configured in the user terminal 80 and the server 30.

[0070] In step (hereinafter abbreviated as "S") 01, based on the situation that the user terminal 80 has received a setting request for a charging plan from the user, the touch panel display shows a charging plan setting screen ( Figure 3 ) In some aspects, based on the situation that the user terminal 80 has launched a pre-installed application, the charging plan setting screen is displayed ( Figure 3 ).

[0071] In S02, the user terminal 80 determines whether it has received user input related to the next usage reservation (scheduled departure date and scheduled departure time) of the vehicle 50. When user input related to the next usage reservation of the vehicle 50 is received (when the determination in S02 is "yes"), in S03, the user terminal 80 sends information related to the next usage reservation of the vehicle 50 (scheduled departure date and scheduled departure time) to the server 30.

[0072] In S11, the server 30 determines whether it has received information related to the next usage reservation of the vehicle 50 (scheduled departure date and scheduled departure time) from the user terminal 80. When information related to the next usage reservation of the vehicle 50 (scheduled departure date and scheduled departure time) is received (when the determination in S11 is "yes"), in S12, based on the information stored in the storage device 32, the server 30 obtains a reference time and a reference SOC. The reference time refers to the predicted value of the departure time of the vehicle 50. The reference SOC is the predicted value of the charging target SOC during timed charging.

[0073] Figure 5 It is a diagram for explaining the information stored in the storage device 32 of the server 30. The information stored in the storage device 32 includes information related to the driving history of the vehicle 50 and the execution history of timed charging received from the ECU 150 of the vehicle 50. As Figure 5 shown, the storage device 32 stores the information related to the actual result of the departure time of the vehicle 50 and the information related to the setting history of the charging target SOC in correspondence.

[0074] Figure 5shows a time period including the actual result of the departure date of the vehicle 50 and the actual result of the departure time. The length of each time period can be set arbitrarily. In Figure 5 it also shows the set value of the charging target SOC in the timed charging before each departure date. The period during which the driving history of the vehicle 50 and the execution history of the timed charging are stored in the storage device 32 can be set to an arbitrary length. In one aspect, the length of this period can be set in consideration of the fact that the usage pattern of the vehicle 50 also changes according to changes in the user's living environment (residence, climate, workplace, etc.).

[0075] The server 30 obtains a reference time by performing statistical processing on the Figure 5 information shown. For example, the server 30 obtains a reference time by performing statistical processing on the actual results of the departure times on the same day as the next scheduled departure date of the vehicle 50 in different weeks. The reference time can be set, for example, as a time period including the average value or the mode value of the actual results of the departure times on the same day as the scheduled departure date in different weeks.

[0076] In addition, the server 30 obtains a reference SOC by performing statistical processing on the Figure 5 information shown. In one aspect, the server 30 performs statistical processing on the setting history of the charging target SOC on the same day as the next scheduled departure date of the vehicle 50 in different weeks, thereby obtaining a reference SOC. The reference SOC can be set, for example, as the average value or the mode value of the set values of the charging target SOC on the same day in different weeks.

[0077] In another aspect, the server 30 obtains a reference SOC by performing statistical processing on the setting history of the charging target SOC in the time period same as the next scheduled departure time of the vehicle 50. The reference SOC can be set, for example, as the average value or the mode value of the set values of the charging target SOC in the same time period.

[0078] Next, the server 30 compares the reference time obtained in S12 with the next scheduled departure time of the vehicle 50, and determines whether the scheduled departure time coincides with the reference time. For example, the server 30 calculates the time difference between the reference time and the scheduled departure time, and determines that the scheduled departure time coincides with the reference time when the magnitude of this time difference is equal to or less than a preset threshold value. When the above time difference is larger than the threshold value, the server 30 also determines whether the scheduled departure time is earlier or later than the reference time.

[0079] When the scheduled departure time is earlier than the reference time (when the determination in S13 is "Yes"), the server 30 sets the charging target SOC in the next scheduled charging to a value higher than the reference SOC through S14. In S14, the server 30 assumes that the vehicle 50 has traveled for a time equivalent to the time difference between the reference time and the scheduled departure time, and calculates the amount of electric power required for this travel. For example, the amount of electric power can be calculated by calculating the distance that the vehicle 50 can travel during the above time and based on the calculated travelable distance and the power consumption rate of the vehicle 50. The distance that the vehicle 50 can travel can be calculated based on the travel history of the vehicle 50 stored in the storage device 32 or the driving mode (vehicle speed) of the vehicle 50. The server 30 sets the charging target SOC by adding the calculated amount of electric power to the reference SOC.

[0080] On the other hand, when the scheduled departure time is later than the reference time (when the determination in S15 is "Yes"), the server 30 sets the charging target SOC in the next scheduled charging to a value lower than the reference SOC through S16. In S16, in contrast to S14, the server 30 assumes that the vehicle 50 has not traveled for a time equivalent to the time difference between the reference time and the scheduled departure time, and calculates the amount of electric power required for this travel. Then, the server 30 sets the charging target SOC by subtracting the calculated amount of electric power from the reference SOC.

[0081] When the scheduled departure time coincides with the reference time (when the determination in S15 is "No"), the server 30 sets the charging target SOC in the next scheduled charging to the reference SOC through S17.

[0082] When setting the charging target SOC through any one of S14, S16, and S17, the server 30 sends the set charging target SOC to the user terminal 80 through S18. Moreover, the server 30, through S19, sends the set value of the charging target SOC to the ECU 150 of the vehicle 50 in correspondence with the next scheduled departure date and scheduled departure time of the vehicle 50. Thereby, the ECU 150 of the vehicle 50 controls the charging of the battery 130 so that the SOC of the battery 130 becomes the charging target SOC before the scheduled departure time on the next scheduled departure date. The ECU 150 corresponds to an embodiment of the "charging control unit".

[0083] After the user terminal 80 sends information (scheduled departure date and scheduled departure time) related to the next scheduled use of the vehicle 50 to the server 30 in S03, in S04, it determines whether it has received the set value of the charging target SOC from the server 30. When receiving the set value of the charging target SOC (when the determination in S04 is "Yes"), the user terminal 80, in S05, on the charging plan setting screen ( Figure 3On the setting bar 210 of ( ), a display bar 214 indicating the set value of the charging target SOC is displayed.

[0084] As described above, according to the charging system of the vehicle according to the present embodiment, based on the user input related to the next scheduled use of the vehicle (departure date and scheduled departure time), the charging target SOC in the next timed charging is automatically set. Thus, there is no need for the user to input the charging target SOC, thereby reducing the user's time and labor. In addition, using the reference time and reference SOC derived from the information related to the driving history of the vehicle and the execution history of the timed charging, the charging target SOC is set based on the scheduled departure time. Therefore, it is possible to reflect the user's usage habits of the vehicle and the execution habits of the timed charging, and estimate the usage status of the battery 130 for the next driving, and appropriately set the charging target SOC. Therefore, the usability when setting the timed charging can be improved.

[0085] Other embodiments

[0086] (1) In the above-described embodiment, a structure has been described in which the charging target SOC in the timed charging is automatically set based on the next scheduled use of the vehicle 50 (scheduled departure date and scheduled departure time) and displayed on the charging plan setting screen of the user terminal 80 ( Figure 3 ). However, the user can appropriately change the set charging target SOC by performing a touch operation on the button 216 on the charging plan setting screen.

[0087] Figure 6 It is a flowchart showing another example of the process of setting the charging target SOC in the timed charging. Figure 6 The flowchart shown is in Figure 4 The flowchart shown is a flowchart in which the processes of S06, S07, S20, and S21 are added to the flowchart shown. In addition, S1 to S17 in the process executed by the server 30 are the same as Figure 4 and are thus omitted from the description.

[0088] When the charging target SOC is displayed on the charging plan setting screen ( Figure 3 ) by the user terminal 80 in S05, it is determined in S06 whether a user operation for changing the charging target SOC has been accepted. When a user operation for changing the charging target SOC has been accepted (when the determination in S06 is "Yes"), the user terminal 80 sends the changed charging target SOC to the server 30 through S07.

[0089] After the server 30 sends the charging target SOC to the user terminal 80 through S18, it determines through S20 whether it has received the set value of the charging target SOC from the user terminal 80. When the set value of the charging target SOC is received from the user terminal 80 (when the determination in S20 is "Yes"), the server 30 changes the charging target SOC to the received charging target SOC through any one of S14, S16, and S17 by S21. Then, the server 30 sends the set value of the charging target SOC to the ECU 150 of the vehicle 50 in association with the next scheduled departure date and scheduled departure time of the vehicle 50 through S19.

[0090] In addition, when the charging target SOC is changed according to a user operation, the information stored in the storage device 32 of the server 30 (refer to Figure 5 ) is updated. Thereby, the change in the charging target SOC this time can be reflected in the setting of the charging target SOC in the timed charging after the next time.

[0091] (2) In the above-described embodiment, the structure in which the server 30 sets the charging target SOC according to the user operation on the user terminal 80 has been described, but it may also be configured such that the ECU 150 of the vehicle 50 or the user terminal 80 sets the charging target SOC. In this case, the ECU 150 or the user terminal 80 functions as a "setting unit".

[0092] It should be considered that the embodiments disclosed herein are illustrative in all respects and not restrictive. The scope of the present disclosure is represented not by the description of the above embodiments but by the claims, and is intended to include the meaning equivalent to the claims and all modifications within the scope.

Claims

1. A charging system for a vehicle, comprising: A vehicle equipped with an energy storage device; A power supply device configured to be able to charge the energy storage device from outside the vehicle; An input device that receives an input operation regarding a scheduled departure time of the vehicle from a user of the vehicle; A setting unit that sets a charging target SOC representing a charging target of the SOC of the energy storage device based on the scheduled departure time received by the input device; A charging control unit that controls the charging of the energy storage device by the power supply device so that the SOC of the energy storage device becomes the charging target SOC before the scheduled departure time; And A storage device that stores information related to the actual result of the departure time of the vehicle and information related to the setting history of the charging target SOC in association with each other, The setting unit obtains a predicted value of the departure time, i.e., a reference time, and a predicted value of the charging target SOC, i.e., a reference SOC, by statistically processing the information stored in the storage device, and changes the reference SOC according to the time difference between the scheduled departure time received by the input device and the reference time, thereby setting the charging target SOC.

2. The charging system for a vehicle according to claim 1, wherein When the time difference between the scheduled departure time and the reference time is equal to or less than a preset threshold, the setting unit sets the charging target SOC to the reference SOC.

3. The charging system for a vehicle according to claim 2, wherein When the time difference between the scheduled departure time and the reference time is greater than the threshold, the setting unit sets the charging target SOC to a value higher than the reference SOC when the scheduled departure time is earlier than the reference time, and sets the charging target SOC to a value lower than the reference SOC when the scheduled departure time is later than the reference time.

4. The charging system for a vehicle according to any one of claims 1 to 3, wherein The setting unit obtains the reference time by statistically processing information related to the actual result of the departure time on the same day of the scheduled departure time in different weeks.

5. The charging system for a vehicle according to any one of claims 1 to 3, wherein The setting unit obtains the reference SOC by statistically processing information related to the setting history of the charging target SOC on the same day or the same time period as the scheduled departure time in different weeks.

6. The charging system for a vehicle according to any one of claims 1 to 3, wherein The charging system for the vehicle further includes a reporting device that reports the charging target SOC set by the setting unit to the user, The input device is configured to receive a user input for changing the charging target SOC, The setting unit changes the setting of the charging target SOC according to the user input.

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