JP2011250641A - Charge control device and vehicle with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charge control device the charging method of which can be suited to a traveling environment, even if a traveling environment changes until the next departure, and to provide a vehicle with the charge control device.SOLUTION: In a charge control unit ECU 10, a departure time recognition unit 12 recognizes a next departure time on the basis of running history information stored in a running history information database 11. An outsider information acquisition unit 20 and an insider information acquisition unit 30 acquire environment information about outside environment of the vehicle. When a charge controller 14 can forecast a change in a driving environment at the next departure time on the basis of the acquired environmental information, the charge controller 14 makes a charging plan corresponding to the change in the driving environment, to charge a battery 2 from an external power supply.

Description

  The present invention relates to a charge control device that controls a power storage state of power storage means that is mounted on a vehicle and that can be charged by power supplied from an external power source, and a vehicle on which the charge control device is mounted.

  Conventionally, in a vehicle equipped with power storage means, in a charge control device that externally charges the power storage means, the required charge amount Q is obtained from a plurality of types of power sources (midnight power, daytime power, power generated by a solar power generator). Among them, the battery is charged using the period from the charging start time to the scheduled departure time so that the power can be charged the most with the cheap power (see paragraphs [0036] and [0042] in Patent Document 1 below). .

JP 2009-148121 A

  However, in the conventional charge control device, the required charge amount Q is preferentially charged with electric power with a low power unit price (for example, late-night electric power), and the charging method is performed when a change occurs in the traveling environment by the scheduled departure time. There is a problem that cannot be made to correspond to this.

  In view of the above circumstances, the present invention provides a charging control device and a vehicle equipped with the charging control device capable of making the charging method compatible with a change in the traveling environment before the next departure. The purpose is to do.

A charge control device according to a first aspect of the present invention is a charge control device that is mounted on a vehicle and controls a storage state of a storage unit that can be charged by power supplied from an external power source,
Departure time recognition means for recognizing the next departure time of the vehicle;
When the environmental information related to the external environment of the vehicle is acquired, and the change of the driving environment of the vehicle at the next departure time recognized by the departure time recognition means is predicted based on the acquired environmental information, the driving environment And charging control means for making a charge plan according to the change and executing charging from the external power source to the power storage means.

  According to the charging control device of the first aspect of the present invention, when a change in the travel environment at the next departure time is predicted based on the acquired environment information, a charge plan according to the change in the travel environment is established and stored from the external power source. Charge the means. Accordingly, it is possible to prevent the charging method from becoming inappropriate due to a change in the traveling environment before the next departure time, and to make the charging method compatible with the predicted traveling environment.

The charge control device of the second invention is the first invention,
When the change of the driving environment of the vehicle at the next departure time is predicted based on the environment information, the charging control unit corrects the next departure time according to the change of the driving environment, and is corrected. A charging plan is made so that the charging of the power storage means is completed by the next departure time, and the power storage means is charged from the external power source.

  According to the charge control device of the second aspect of the invention, the next departure time may be changed as the driving environment changes. Therefore, the next departure time is corrected according to the predicted change in the driving environment, and the charging plan is made so that the charging is completed by the corrected next departure time, and charging from the external power source to the power storage means is executed. Thus, it is possible to avoid an inappropriate charging method due to a change in the traveling environment by the next departure time.

The charge control device of the third invention is the second invention,
The charging control unit corrects the next departure time so that the next departure time is advanced when a road surface freeze or snowfall is predicted at the next departure time recognized by the departure time recognition unit.

  According to the charging control device of the third aspect of the invention, for example, when the road surface freezes or snow is predicted in the next morning, which is the next departure time, as a change in the traveling environment, the actual next departure time is often advanced. Therefore, when the road is frozen or snowfall is predicted at the next departure time, the next departure time is corrected so as to avoid inconveniences such as incomplete charging due to earlier departure time. can do.

A charge control device of a fourth invention is any one of the first to third inventions,
The charging control unit changes a target charging amount of the power storage unit according to a change in the traveling environment when a change in the traveling environment of the vehicle at the next departure time is predicted based on the environment information. It is characterized by.

  According to the charge control device of the fourth aspect of the invention, the power consumption at the next use of the vehicle may change as the driving environment changes. Therefore, by changing the target charge amount of the power storage means according to the predicted change in the driving environment, the change in the driving environment by the next departure time can not cope with the change in power consumption at the next use, etc. Inconvenience can be avoided.

A charging control device of a fifth invention is the fourth invention,
The charge control means increases the target charge amount of the power storage means when a road surface freeze or snowfall is predicted at the next departure time recognized by the departure time recognition means.

  According to the charge control device of the fifth aspect of the invention, for example, when the road surface is frozen or snow is predicted in the next morning, which is the next departure time, as a change in the driving environment, the power consumption when the vehicle is used next time is generally Increase. Therefore, when road freezing or snow accumulation is predicted at the next departure time, it is possible to avoid the occurrence of inconveniences such as not being able to cope with an increase in power consumption by increasing the target charge amount of the power storage means.

A charge control device according to a sixth aspect of the present invention, according to any one of the first to fifth aspects,
The charging control unit acquires weather information from an external information source as the environment information.

  According to the charging control apparatus of the sixth aspect of the invention, by obtaining weather information from an external information source as environment information, it is possible to accurately predict changes in the travel environment at the next departure time, and the travel environment by the next departure time. Therefore, it is possible to prevent the charging method from becoming inappropriate due to the change in the charging method, and to make the charging method compatible with the predicted driving environment.

The charge control means of the seventh invention is any one of the first to sixth inventions,
The charging control unit acquires output values of various sensors mounted on the vehicle as the environment information.

  According to the charge control device of the seventh aspect of the invention, by acquiring weather information from various sensors (such as an outside air temperature sensor and a raindrop sensor) as environmental information, a device mounted on the vehicle that changes the driving environment at the next departure time is obtained. It can be easily predicted by using it and avoids the charging method becoming inappropriate due to changes in the driving environment by the next departure time, and the charging method corresponds to the predicted driving environment It can be.

The charge control device according to an eighth aspect of the present invention provides the charge control device according to any of the first to seventh aspects of the invention,
The departure time recognition means includes
The vehicle includes travel history information storage means storing travel history information including at least past departure times in the vehicle, and the predicted departure time of the vehicle predicted from the travel history information stored in the travel history information storage means, It is characterized by recognizing it as the next departure time.

  According to the charging control device of the eighth aspect of the present invention, the next predicted departure time is predicted from the travel history information, and this is set as the next departure time, thereby making it unnecessary to input the departure time by the user and the like until the next departure time. Therefore, it is possible to prevent the charging method from becoming inappropriate due to a change in the traveling environment, and to make the charging method compatible with the predicted traveling environment.

A charge control device of a ninth invention is any one of the first to eighth inventions,
The charging control unit makes a charging plan from the external power source to the power storage unit so as to minimize an electricity charge from a plurality of power sources having different power unit prices, and performs charging.

  According to the charging control device of the ninth aspect of the present invention, when making a charging plan, by making the electricity bill from the plurality of power sources having different power unit prices minimum, it is possible to take into account changes in the driving environment. The charging method is adapted to the predicted driving environment by preventing the charging method from becoming inappropriate due to changes in the driving environment by the next departure time, while suppressing the increase in electricity charges It can be.

A vehicle according to a tenth aspect of the invention is a vehicle equipped with the charge control device according to any one of claims 1 to 9,
A first driving wheel that is one of the front wheel and the rear wheel and driven by one or both of the engine and the first motor, and a wheel other than the first driving wheel, and if necessary, by a second motor A second drive wheel to be driven,
Electric power is supplied from the power storage means to the first motor and the second motor.

  According to the vehicle of the tenth aspect of the present invention, it is preferable that the charging control device is mounted on a so-called electric 4WD in which the second driving wheel is driven by a motor as necessary. That is, in the electric 4WD, the power consumption increases when the second drive wheel is driven by the second motor in accordance with the change in the travel environment, but the change in the travel environment at the next departure time is predicted based on the acquired environment information. In this case, by making a charging plan according to a change in the traveling environment and executing charging from the external power source to the power storage means, the charging method can be adapted to an increase in power consumption.

The whole block diagram of the vehicle by which the charge control apparatus of this embodiment is mounted. The flowchart which shows the processing content by charge control ECU of FIG. The flowchart which shows the content of the automatic mode process of FIG. The flowchart which shows the content of the memory | storage process of driving history information. Explanatory drawing which shows the example of a driving | running | working pattern.

  As shown in FIG. 1, the charge control device of the present embodiment is mounted on, for example, a hybrid vehicle (corresponding to the vehicle of the present invention).

  The hybrid vehicle is a four-wheel drive vehicle, and is a first motor 3 and a second motor 4 that are rotated by electric power supplied from an engine 1 that is an internal combustion engine and a battery 2 (corresponding to power storage means of the present invention). Also corresponds to the electric motor of the present invention) and a main ECU 5 (Electric Control Unit) that centrally manages and controls the engine 1, the first motor 3, the second motor 4, and the like. The main ECU 5 is a microcomputer (not shown) including a RAM (Random Access Memory), a ROM (Read Only Memory), a CPU (Central Processing Unit), an input / output interface, a timer, and the like, and performs processing according to programs and data recorded in the ROM. Do.

  The hybrid vehicle is driven by a PDU (PowerDrive Unit) 6 that controls electric power of the first motor 3 and the second motor 4, front wheels 7 driven by the engine 1 and the first motor 3, and the second motor 4. A rear wheel 8.

  The engine 1 and the first motor 3 are connected to a common drive shaft, and drive the front wheels 7 via a gear mechanism, a differential gear, and the like (both not shown). Similarly, the second motor 4 drives the rear wheel 8 via a gear mechanism, a differential gear, and the like (both not shown).

  The first motor 3 and the second motor 4 also function as a generator under the control of the PDU 6. That is, the first motor 3 can receive power from the engine 1 or the front wheel 7 to generate power or regenerate and charge the battery 2, and the second motor 4 can receive power from the rear wheel 8 to regenerate. To charge the battery 2.

  In the present embodiment, the battery 2 is, for example, a lithium ion battery, and the output voltage varies in a range of about 300V to 500V. Further, the battery 2 is connected to an outlet X of an external power source via the connector 9. An AC-DC converter 2A is provided between the battery 2 and the connector 9. The AC-DC converter 2A converts a commercial AC power source into a DC rated voltage and has a contactor function.

  Next, the configuration of the charge control device mounted in such a hybrid vehicle will be described.

  The charge control device includes a charge control ECU 10, an external information acquisition unit 20, and an internal information acquisition unit 30.

  The charge control ECU 10 includes a travel history information database 11 (corresponding to a travel history information storage unit of the present invention), a departure time recognition unit 12 (corresponding to a departure time recognition unit of the present invention), an SOC detection unit 13, A charge control unit 14 (corresponding to the charge control means of the present invention).

  The travel history information database 11 is means for storing travel history information of the hybrid vehicle, and specifically includes a memory, a ROM, a RAM, and the like. Further, as the travel history information, at least the departure time is included, and information regarding the transition of the travel time and the vehicle speed is stored in the travel history database 11.

  The departure time recognition unit 12 extracts a travel pattern from the travel history information stored in the travel history information database 11, predicts a predicted departure time when the vehicle will be used next from the extracted travel pattern, and The estimated departure time is recognized as the next departure time.

  The departure time recognizing unit 12 may recognize the next departure time input by the user via the navigation device or the like, and use this instead of the next departure time predicted based on the travel history information. .

  The SOC detection unit 13 estimates the open circuit voltage of the battery 2 from the output voltage and output current of the battery 2, and a map or data table that defines the relationship between the estimated open circuit voltage and the state of charge (SOC) that is the amount of charge. (Hereinafter referred to as a map or the like), the SOC of the battery 2 is estimated. Furthermore, the SOC detection unit 13 calculates the charging time of the battery 2 by referring to a map or the like that defines the relationship between the SOC and the charging time from the SOC of the battery 2.

  Based on the environmental information regarding the external environment of the vehicle acquired by the external information acquisition unit 20 and the internal information acquisition unit 30, the charging control unit 14 makes a charging plan and performs charging of the battery 2 from the external power source.

  Although details of the processing by the charging control unit 14 will be described later, the charging control unit 14 has a configuration and functions necessary for making a charging plan (for example, a clock for managing the date and time, and a plurality of power sources having different power unit prices). Calculation function to calculate electricity charges from within.

  Furthermore, the charge control unit 14 controls the charging of the battery 2 with the target voltage / current through the AC-DC converter 2A and the ON / OFF of the charging of the battery 2 by the contactor function as the execution of charging. To do. In addition, the charging control unit 14 is configured to supply power sources (system commercial power, photovoltaic power, generated power by a cogeneration device, etc.) via a power line switching device Y (switch circuit) provided on the external power supply side. Switch. The control of the power line switching device Y by the charging control unit 14 is configured, for example, by providing a PLC modem or the like between the connector 9 and the outlet X so that the charging control ECU and the power line switching device Y can perform PLC communication. It is realized by doing.

  Next, the external information acquisition unit 20 acquires weather information and traveling information of other vehicles from a predetermined information source as environmental information related to the external environment of the vehicle. Specifically, the external information acquisition unit 20 is configured to be connectable to a network via a communication device (not shown), and is a weather in which meteorological information such as a weather forecast (weather / expected temperature) is stored as a predetermined information source. Environmental information is acquired from an information server such as an information server, an information server in which travel information provided from other vehicles is stored, and a beacon.

  Next, the internal information acquisition part 30 acquires the output value of the various sensors mounted in the vehicle as environmental information regarding the external environment of the vehicle. Specifically, the internal information acquisition unit 30 acquires output values of an outside air temperature sensor, a raindrop sensor, and the like as environmental information, for example.

  Next, the processing content by the charge control ECU 10 will be described with reference to the flowchart shown in FIG.

  First, the charging control ECU 10 determines whether or not the vehicle is in a stopped state and is IG-OFF (FIG. 2 / STEP 11). If the vehicle is stopped and is in an IG-OFF state (FIG. 2 / YES in STEP 11), it is determined whether or not the connector 9 is connected to the outlet X of the external power supply (FIG. 2 / STEP 12).

  When the vehicle is stopped and not IG-OFF (NO in FIG. 2 / STEP 11) or when the connector 9 is not connected (NO in FIG. 2 / STEP 12), the process returns to STEP 11 to stop the vehicle. Etc. are determined again.

On the other hand, when connector 9 is ready to supply power from external power source X connected to outlet X (YES in FIG. 2 / STEP 12), SOC detection unit 13 of charge control ECU 10 detects the SOC of battery 2. (FIG. 2 / STEP 13), the time (charge time) t required until the SOC of the battery 2 is fully charged is estimated from the SOC of the charging battery 2 (FIG. 2 / STEP 14). Further, the charging control ECU 10 acquires the current time ta (FIG. 2 / STEP 15).
Next, the charging control ECU 10 determines whether or not the “automatic mode” relating to charging is selected via a predetermined input means (not shown) (FIG. 2 / STEP 16).

  The “automatic mode”, which will be described in detail later, is a charging mode in which the next departure time is predicted from the past traveling history, and charging is completed while responding to changes in the traveling environment by the predicted next departure time.

  Then, when the “auto mode” is selected by the user (YES in FIG. 2 / STEP 16), the charge control unit 14 of the charge control ECU 10 executes an auto mode process to be described later and sets the charging plan for the battery 2. The charging is performed and charging is executed according to the generated charging plan (FIG. 2 / STEP 17, 18, 19).

  On the other hand, the charging control unit 14 of the charging control ECU 10 determines the charging plan when the “automatic mode” is not selected by the user, that is, when the “normal mode” is selected (NO in FIG. 2 / STEP 16). The battery is immediately charged without creating (FIG. 2 / STEP 18, 19).

  Specifically, when “normal mode” is selected, the charging control unit 14 of the charging control ECU 10 sets the current time ta acquired in STEP 15 as the charging start time, and the charging time t estimated in STEP 14 at this time. Is added to the scheduled charging end time, and charging is performed with normal grid commercial power (FIG. 2 / STEP 18, 19). In addition, the charging control ECU 10 selects the power supply source in this case not only the grid commercial power but also the one that minimizes the charging cost (the grid commercial power, the photovoltaic power, the power generated by the cogeneration device), You may make it perform charge.

  The above is the outline of the processing by the charge control EUC 10.

    Next, with reference to FIG. 3, the details of the “automatic mode processing” in STEP 17 which will be described later will be described.

  First, the charge control ECU 10 reads the vehicle travel history information stored in the travel history information database 11 (FIG. 3 / STEP 21), and searches the travel history travel pattern stored at the time of the final IG-OFF (FIG. 3). / STEP22).

  Next, the departure time recognition unit 12 of the charging control ECU 10 predicts the next departure time tb from this travel pattern (FIG. 3 / STEP 23).

  The details of the search for the travel pattern in STEP 22 and the prediction of the departure time in STEP 23 will be described later.

  Next, the charge control ECU 10 determines whether or not the chargeable time (tb-ta) from the current time ta to the next departure time tb is longer than the charge time t estimated in STEP 14 (STEP 24 in FIG. 3).

  And charge control ECU10 complete | finishes this process, when chargeable time (tb-ta) is shorter than the charge time t required for charge (FIG. 3 / STEP24 NO). In this case, the charge control ECU 10 cannot fully charge the battery 2 during the chargeable time (tb-ta) from the current time ta to the next departure time tb, and therefore returns to STEP 18 and starts charging immediately ( FIG. 2 / STEP 18). This is because the SOC of the battery 2 is increased as much as possible by starting charging immediately.

  On the other hand, when the chargeable time (tb−ta) is longer than the charge time t necessary for charging (YES in FIG. 3 / STEP 24), the charging control ECU 10 sets the external information acquisition unit 20 and the internal information acquisition unit 30. To obtain environmental information related to the external environment of the vehicle (FIG. 3 / STEP 25).

  Then, the charging control unit 14 of the charging control ECU 10 determines whether or not a change in the traveling environment of the vehicle at the next departure time tb is predicted from the acquired environment information (FIG. 3 / STEP 26).

  Here, the driving environment changes from the driving environment different from the driving environment of normal vehicles (driving on dry asphalt road surface), and from the last IG-OFF to the next departure time Includes cases where the environment changes.

  Specifically, the charging control unit 14 of the charging control ECU 10 changes from the acquired environment information to a traveling environment such as road surface freezing and snowfall at the next departure time tb based on the weather information acquired from the external information acquiring unit 20. Whether or not is predicted. In particular, the change in the driving environment is intended for freezing of the road surface and snow accumulation. When there is a change in the driving environment, (1) the user considers traffic congestion and the like earlier than usual. This is because it is necessary to charge the battery 2 in consideration of the fact that it is expected to leave, and (2) the travel time becomes longer due to traffic jams and the power consumption becomes higher than usual.

  In addition to the weather information acquired from the external information acquisition unit 20, the charging control unit 14 of the charging control ECU 10 provides road surface information provided from other vehicles around the vehicle (for example, within a radius of 5 km). Based on (for example, slip information), a change in travel environment may be predicted.

  Further, the charging control unit 14 of the charging control ECU 10 adds or replaces the environmental information acquired by the external information acquisition unit 20 with the outside temperature sensor 31 and the raindrop sensor 32 of the host vehicle acquired by the internal information acquisition unit 30. A change in the driving environment may be predicted based on the output value. For example, when precipitation is observed by the raindrop sensor 32 and the output value of the outside air temperature sensor 31 is below freezing point, freezing of the road surface is predicted at the next departure time in the next morning. Expected to be different.

  In this way, in addition to weather information, environmental information around the host vehicle can be taken into account, and the prediction accuracy of changes in the travel environment can be improved.

  Then, when a change in the travel environment of the vehicle at the next departure time tb is predicted (YES in FIG. 3 / STEP 26), the charge control unit 14 of the charge control ECU 10 corrects the next departure time predicted in STEP 23 ( FIG. 3 / STEP 27).

  Specifically, the charging control unit 14 of the charging control ECU 10 sets the next departure time for a certain time (when a change is predicted in the traveling environment such as freezing of the road surface or snow accumulation at the next departure time tb as a change in the traveling environment. For example, correction is made earlier by 1 hour.

  On the other hand, the charging control unit 14 of the charging control ECU 10 does not correct the next departure time predicted in STEP 23 when a change in the traveling environment of the vehicle at the next departure time tb is not predicted (NO in STEP 26 in FIG. 3). The charge cost calculation process in STEP 28 will be performed.

  Specifically, in the charging cost calculation process, the next departure time (or the next departure time after correction when the next departure time is corrected in STEP 27) is set as the charging end time, and the charging start time calculated backward from the charging time t. The electricity charge when charging is started is calculated for a plurality of power sources having different power unit prices. Power sources with different power unit prices are grid commercial power, solar power generation power, and power generated by cogeneration equipment. For grid commercial power, daytime power (10: 0 to 17:00), morning and evening power ( 7:00 to 10:00, 17:00 to 23:00), and late-night power (23:00 to 7:00), the unit price of power is different. Therefore, charging costs are calculated using these as different power sources.

  Next, the charging control unit 14 of the charging control ECU 10 creates a charging plan according to the combination of the power sources that minimizes the charging cost calculated in STEP 28 (FIG. 3 / STEP 29).

  Specifically, the charging control unit 14 creates a charging plan including at least a charging start time, a charging end time, and a power supply source therebetween.

  The above is the details of “auto mode processing”.

   Next, with reference to FIG. 4, a supplementary description will be given of the search for the travel pattern in STEP 22 and the prediction of the departure time in STEP 23, which have been described later.

  FIG. 4 is a flowchart of a process for storing vehicle travel history information in the travel history information database 11.

  In this process, the charging control ECU 10 firstly, at the timing of IG-OFF (FIG. 4 / STEP 31), as the travel history, (1) time and speed, (2) home IG-ON time and home IG-OFF time, (3) The daily IG-OFF count is stored in the travel history information database 11 (FIG. 4 / STEPs 32-34).

  Specifically, the charging control ECU 10 stores the travel history shown in FIG. 5 in the travel history information database 11.

  FIG. 5A shows a travel history on weekdays (Monday to Friday). In particular, when the vehicle is used for commuting, a traveling history as shown in the upper part is stored, and when not used for commuting, a traveling history as shown in the lower part is stored.

  FIG. 5B shows a travel history on holidays (Saturday and Sunday). In particular, when going out using the vehicle such as leisure, the travel history as shown in the upper part is stored, and when using for shopping to the neighborhood instead of going out, the travel history as shown in the lower part is stored. Is done.

  FIG.5 (c) is an example of a change of the commuting mode of FIG.5 (a), and when the said vehicle is used for night work, such a driving | running | working log | history is memorize | stored.

  Next, the charging control ECU 10 sorts the traveling history to be recorded this time into one of the traveling modes in light of the traveling modes in which past traveling histories are classified (FIG. 4 / STEP 35).

  When the travel history to be recorded this time belongs to the weekday mode (FIG. 4 / STEP 35-1), the charging control ECU 10 further commute (FIG. 4 / STEP 35-1A) or shopping (FIG. 4 / STEP 35). -1B) and discriminates it in the travel history information database 11 (FIG. 4 / STEP 36).

  Similarly, when the travel history to be recorded this time belongs to the holiday mode (FIG. 4 / STEP 35-2), the charging control ECU 10 further determines whether it is leisure (FIG. 4 / STEP 35-2A) or shopping (FIG. 4 / (STEP 35-2B) is distinguished and stored in the travel history information database 11 (FIG. 4 / STEP 36).

  Further, when the travel history to be recorded this time belongs to the special life mode (FIG. 4 / STEP 35-3), the charging control ECU 10 distinguishes them and stores them in the travel history information database 11 (FIG. 4 / STEP 36).

  The above is the details of the process of storing the vehicle travel history information in the travel history information database 11. In the search for the travel pattern in STEP 22, the travel history stored at the time of the last IG-OFF is stored in the travel history information database 11. It is searched which travel pattern (FIGS. 5A to 5C, STEP35-1A to STEP35-3) corresponds. And in the prediction of the departure time of STEP23, the next departure time is predicted according to a corresponding traveling pattern.

  Specifically, as shown in FIG. 5A, the travel history stored at the time of the last IG-OFF is IG-OFF (19:00) when returning home in the weekday mode on Wednesday, and is classified as commuting. In the case of traveling, in the light of the past travel pattern, the next morning IG-ON time as commuting in the weekday mode is predicted as the next departure time (6:50).

  The above is the details of the charging control device of the present embodiment. According to this, when the change of the driving environment at the next departure time is predicted based on the acquired environment information, the charging according to the change of the driving environment is performed. It is possible to charge the battery 2 from an external power source by making a plan, avoiding an inappropriate charging method due to changes in the driving environment by the next departure time, It can correspond to the predicted driving environment.

    In the present embodiment, a vehicle (electric 4WD) including the first motor 3 and the second motor 4 has been described as an example of the vehicle. However, the vehicle on which the power supply system is mounted is not limited to this. As long as the vehicle is propelled by the electric power supplied from the battery 2, it may be a fuel cell vehicle or an electric vehicle provided with power storage means, in addition to a series hybrid vehicle or a parallel hybrid vehicle.

  Further, in the present embodiment, the case where there is freezing of the road surface or snow accumulation as a change in the driving environment has been described. However, the present invention is not limited to this, and the case where the road surface is wet due to rain is also dependent on the change in the driving environment. The battery 2 may be charged.

  Furthermore, in the present embodiment, when there is freezing of the road surface or snow accumulation as a change in the driving environment, correction is made to advance the next departure time by a certain time (1 hour) (FIG. 3 / STEP 27), but this is limited to this. Instead of this, the time to be corrected may be varied according to changes in the driving environment. For example, when the road surface is frozen or snowed for 1 hour, but the road surface is wet due to rain, the next departure time may be corrected 30 minutes earlier.

  Further, in the present embodiment, the creation of the above-described charging plan (selection of charging start / end time and power supply source) has been described as a charging method corresponding to a change in the traveling environment, but the present invention is not limited to this. In addition to or instead of this, the target charge amount of the battery 2 may be temporarily increased. If the next morning, which is the next departure time, is expected to freeze or accumulate snow on the road, the power consumption during the next use of the vehicle is generally increased due to the 4WD running with the second motor 2 driven. However, by increasing the target charge amount of the power storage means, it is possible to avoid the occurrence of inconveniences such as inability to cope with an increase in power consumption.

  DESCRIPTION OF SYMBOLS 2 ... Battery (electric storage means), 3 ... 1st motor (electric motor), 4 ... 2nd motor (electric motor), 9 ... Connector, 10 ... Charge control ECU, 11 ... Traveling history information database, 12 ... Departure time recognition part ( Departure time recognition means), 13... SOC detection section, 14... Charge control section (charge control means), 20... External information acquisition section, 30... Internal information acquisition section, Y.

Claims (10)

A charge control device that controls a storage state of a storage unit that is mounted on a vehicle and that can be charged by power supplied from an external power source,
Departure time recognition means for recognizing the next departure time of the vehicle;
When the environmental information related to the external environment of the vehicle is acquired, and the change of the driving environment of the vehicle at the next departure time recognized by the departure time recognition means is predicted based on the acquired environmental information, the driving environment A charge control device comprising: charge control means for making a charge plan according to the change of the power supply and charging the power storage means from the external power source. The charging control device according to claim 1,
When the change of the driving environment of the vehicle at the next departure time is predicted based on the environment information, the charging control unit corrects the next departure time according to the change of the driving environment, and is corrected. A charging control apparatus, wherein a charging plan is made so that charging of the power storage means is completed by the next departure time, and charging from the external power source to the power storage means is executed. The charge control device according to claim 2,
The charging control device corrects the next departure time to be advanced when the road surface is frozen or snow is predicted at the next departure time recognized by the departure time recognition unit. The charge control device according to any one of claims 1 to 3,
The charging control unit changes a target charging amount of the power storage unit according to a change in the traveling environment when a change in the traveling environment of the vehicle at the next departure time is predicted based on the environment information. A charge control device. The charge control device according to claim 4,
The charging control device increases the target charge amount of the power storage means when a road surface freeze or snow is predicted at the next departure time recognized by the departure time recognition means. The charge control device according to any one of claims 1 to 5,
The charging control device, wherein the charging control means acquires weather information from an external information source as the environment information. The charge control device according to any one of claims 1 to 6,
The charging control device is characterized in that the charging control means acquires output values of various sensors mounted on the vehicle as the environment information. The charge control device according to any one of claims 1 to 7,
The departure time recognition means includes
The vehicle includes travel history information storage means storing travel history information including at least past departure times in the vehicle, and the predicted departure time of the vehicle predicted from the travel history information stored in the travel history information storage means, A charge control device that recognizes the next departure time. The charge control device according to any one of claims 1 to 8,
The charging control means executes charging by making a charging plan from the external power source to the power storage means so that an electricity charge is minimized among a plurality of power sources having different power unit prices. Control device. A vehicle equipped with the charge control device according to any one of claims 1 to 9,
A first driving wheel that is one of the front wheel and the rear wheel and driven by one or both of the engine and the first motor, and a wheel other than the first driving wheel, and if necessary, by a second motor A second drive wheel to be driven,
A vehicle characterized in that electric power is supplied from the power storage means to the first motor and the second motor.

Images