JP2010032459A - On-vehicle device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle device for an electric vehicle for calculating the optimal charging amount and the optimal charging time when unexpected movement or short distance movement or the like to a near place occurs. <P>SOLUTION: The on-vehicle device includes a route retrieving section for performing route retrieval, and a charge managing section for calculating the charging amount to be charged into an on-vehicle battery so that the vehicle travels on the route retrieved by the charge managing section. The charge managing section calculates the charging time required for charging the calculated charging amount into the on-vehicle battery, and reports the calculated charging time with an image, voice or the like. During travel, the charge managing section monitors whether various information used for calculation or correction of the charging time, such as the number of boarding people, use/nonuse of an air-conditioner and the like, is changed, and displays, on a display section, an image showing a warning when the change is detected. Thus, it informs a user of possibility of causing travelling impossibility by lack of charging amount. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted device, and particularly to a vehicle-mounted device that is mounted on an electric vehicle driven by a battery and has a route guidance function for performing a route search.

  In recent years, with the commercialization of electric vehicles, various in-vehicle devices that are supposed to be used in electric vehicles are being developed. An electric vehicle uses a battery to drive a motor and uses the driving force as a power source. For this reason, when the remaining capacity of the battery is low, it is necessary to find the nearest charging station and charge it. The charging station refers to a station that can charge an electric vehicle, such as a gas station.

  In relation to the above, Patent Document 1 discloses a route search device that searches for an optimum guidance route to a destination in consideration of the cruising force of an electric vehicle. This route search device searches for a guidance route to a destination in consideration of battery auxiliary charging, based on road map data including information on charging stations.

Patent Document 2 discloses a route guidance system for an electric vehicle that alerts the user so that the next run can be performed after reaching the destination. This route guidance system determines whether or not the battery can be charged at the destination, and when it is determined that charging at the destination is impossible, displays a charging station near the destination on the display.
JP-A-10-170293 JP 2003-294463 A

  However, Patent Document 1 and Patent Document 2 disclose a function for securing the remaining capacity of the battery, but neither disclosure nor suggestion about shortening the time required for charging. For example, when an unscheduled movement occurs or a short-distance movement to a familiar place occurs, it is necessary to charge at a charging stand in the same manner as in the past when only the minimum necessary charging is to be performed.

  However, it takes several hours to fully charge the battery with current technology. For this reason, it cannot be performed as easily as refueling gasoline, and it is not realistic to fully charge it by spending hours at a moving station.

  To solve the above problem, do not fully charge the battery in order to charge it in a short time, and cut the charging time based on the scale of the fuel (remaining capacity) meter installed in the electric vehicle. There is a method of estimating the distance that can be traveled from daily performance and cutting the time. For example, charging is based on the experience of the user, such that the vehicle can travel 10 km if charged for 10 minutes.

  However, since this method depends only on the user's sense, there is no certainty. During driving, the power consumption of the battery constantly changes due to various factors such as the use of lights and the use of wipers. For this reason, in order to avoid being unable to move due to running out of capacity, a large amount of charge is inevitably required. That is, it is difficult to complete charging in a short time.

  The present invention has been made in view of the above problems, and when an unscheduled movement, a short-distance movement to a familiar place, or the like occurs, the charging amount and charging time optimum for the route that the user wants to travel is provided. An object of the present invention is to provide an in-vehicle device for an electric vehicle that can be charged by the above.

  In order to achieve the above object, an in-vehicle apparatus according to the present invention includes an in-vehicle apparatus including a route search unit that receives a destination designation and searches for a route, and the route searched by the route search unit is an electric vehicle. A charge management unit that calculates a charge amount necessary for the vehicle to travel, calculates a charge time required for a charge process based on the charge amount, and notifies the charge time.

  According to this configuration, the in-vehicle device of the present invention includes a route search unit that receives a designation of a destination and performs a route search. In addition, the amount of charge that should be charged to the in-vehicle battery in order to travel the route searched by the route search unit is calculated, and the charging time required to charge the calculated amount of charge to the in-vehicle battery is calculated and calculated. The charging time is notified by image or sound. Thus, the user can quickly and easily perform the necessary minimum charging according to the route without depending on the scale amount or experience.

  In order to achieve the above object, a vehicle-mounted device of the present invention includes a GPS (Global Positioning System) device, a display unit that displays an image, an operation unit that receives instructions for the vehicle-mounted device, and map information. A recording unit for recording, the route search unit performs a route search based on the position of the electric vehicle obtained by the GPS device, the destination received by the operation unit, and the map information, The charge management unit displays an image indicating the calculated charging time on the display unit.

  According to this configuration, the in-vehicle device of the present invention includes a GPS device that acquires longitude / latitude information of a vehicle position, a display unit, an operation unit, and a recording unit that records map information. The route search unit described above performs a route search from the current position of the electric vehicle obtained by the GPS device, the destination received from the user, and the map information recorded in the recording unit. For this reason, it is possible to easily perform route search and acquisition of information related to the route, for example, acquisition of distance, height difference, and the like. The charge management unit displays an image indicating the calculated charging time on the display unit. Thereby, it is possible to notify the user of the charging time.

  In order to achieve the above object, the in-vehicle device according to the present invention is configured so that the charge management unit calculates the charge amount based on a distance, a height difference, or a search execution date and time searched by the route search unit. It is characterized by calculating.

  According to this configuration, the charge management unit calculates the charge amount based on the distance of the route searched by the route search unit, the height difference, or the date and time when the search was performed. That is, first, the amount of charge is calculated based on the distance of the travel route, and then the necessary amount of charge is calculated in consideration of the height difference that is an element that becomes the load of the vehicle-mounted battery. Further, based on the date and time when the search was performed, for example, if it is nighttime, the required amount of charge is calculated in consideration of factors such as the use of the light being a load on the in-vehicle battery. Thereby, it is possible to calculate the charge amount according to the traveling state.

  In order to achieve the above object, in the in-vehicle apparatus of the present invention, the charge management unit receives the number of passengers or the loaded weight of the electric vehicle, and corrects the charge amount based on the received value. It is characterized by.

  According to this configuration, the charge management unit corrects the charge amount based on the number of passengers of the electric vehicle specified in advance or the loaded weight. That is, first, the amount of charge is calculated based on the distance of the travel route, and then the amount of charge is increased or decreased in consideration of the number of passengers or the loaded weight, which is an element that becomes a load of the vehicle-mounted battery. For example, since the load increases when the number of passengers increases, the amount of charge is increased. Thereby, it is possible to calculate the charge amount according to the traveling state.

  In order to achieve the above object, in the in-vehicle apparatus according to the present invention, the charge management unit accepts designation of use / unuse of an electronic device mounted on the electric vehicle for each electronic device, and Based on the above, the charge amount is corrected.

  According to this configuration, the charge management unit corrects the charge amount based on the usage status of an electronic device mounted on the electric vehicle, such as a television or an air conditioner. In other words, first, the amount of charge is calculated based on the distance of the travel route, and then the amount of charge is increased or decreased in consideration of the power consumption of the electronic device that is an element that becomes the load of the vehicle-mounted battery. For example, when using a television or an air conditioner, the load increases, so the amount of charge is increased. Thereby, it is possible to calculate the charge amount according to the traveling state.

  In order to achieve the above object, the in-vehicle device of the present invention includes a traffic information acquisition unit that receives traffic information, and the charge management unit includes traffic information included in the traffic information acquired by the traffic information acquisition unit. Based on the above, the charge amount is corrected.

  According to this structure, the traffic information acquisition part which acquires traffic information by VICS (Vehicle Information and Communication System) etc. is provided. The charge management unit corrects the charge amount based on the traffic jam information included in the traffic information. That is, the charging amount is increased or decreased in consideration of the fact that the cruising speed is reduced due to the occurrence of traffic jams and the consumption efficiency of the in-vehicle battery is reduced. Thereby, it is possible to calculate the charge amount according to the traveling state.

  In order to achieve the above object, the in-vehicle device of the present invention calculates the charge amount during traveling based on the route searched by the route search unit and the charge amount calculated by the charge management unit, Or a battery monitoring unit that monitors whether or not the content change of the information used for correction has occurred, and displays a warning image on the display unit when the content change is detected. It is said.

  According to this configuration, when traveling based on the route searched by the route search unit and the charge amount calculated by the charge management unit, various information used for calculating or correcting the charging time, for example, the number of passengers and the air conditioner A battery monitoring unit is provided for monitoring whether a change has been made to used / unused. When the change is detected, the battery monitoring unit displays an image indicating a warning on the display unit. Thereby, it can be notified to the user that there is a possibility that the vehicle may not be able to travel due to insufficient charge.

  In order to achieve the above object, the in-vehicle apparatus of the present invention is configured so that the battery monitoring unit travels based on the route searched by the route search unit and the charge amount calculated by the charge management unit. Monitors whether the travel route is changed or whether acceleration / deceleration exceeding a predetermined value has occurred, and displays an image indicating a warning on the display unit when the change or acceleration / deceleration is detected. It is characterized by doing.

  According to this configuration, the battery monitoring unit changes the travel route or suddenly exceeds a predetermined value when traveling based on the route searched by the route search unit and the charge amount calculated by the charge management unit. Monitor for acceleration / deceleration. When these are detected, the battery monitoring unit displays an image indicating a warning on the display unit. Thereby, it can be notified to the user that there is a possibility that the vehicle may not be able to travel due to insufficient charge.

  In order to achieve the above object, the in-vehicle apparatus of the present invention is configured so that the battery monitoring unit travels based on the route searched by the route search unit and the charge amount calculated by the charge management unit. The charge amount of the in-vehicle battery that supplies power to the electric vehicle is monitored, and when it is detected that the route cannot be completed with the charge amount, the route search unit is routed to the charging facility. It is characterized by instructing a search.

  According to this configuration, the battery monitoring unit supplies the electric vehicle with electric power when traveling based on the route searched by the route search unit and the charge amount calculated by the charge management unit. Monitor the remaining amount of charge. When it is detected that the destination cannot be reached with the current charge amount, the route search unit is instructed to search for a route to the nearest charging station (= charging facility). As a result, it is possible to avoid running impossible due to power shortage.

  According to the present invention, the amount of charge required to travel to the destination is calculated based on a plurality of information, for example, travel distance, height difference, usage status of electronic equipment, and the like. For this reason, compared with the method of determining charge amount depending on a user's experience, the meter which shows charge amount, etc. like the past, the calculation process of charge amount and charge time with higher precision can be performed. Therefore, it is possible to avoid a shortage of charging amount while omitting extra charging time.

Embodiments of the present invention will be described below with reference to the drawings. In addition, embodiment shown here is an example and this invention is not limited to embodiment shown here.
<1. Internal configuration>
FIG. 1 is a block diagram showing an internal configuration of an electric vehicle 100 equipped with a vehicle-mounted device according to an embodiment of the present invention. As shown in the block diagram of FIG. 1, the in-vehicle device of the present invention includes a first control unit 11 (= route search unit), a GPS antenna 12 (= GPS device), and positioning navigation, which are devices related to route guidance processing. A device 13 (= GPS device), an LCD (Liquid Crystal Display) 14 (= display unit), a display control unit 15, an operation unit 16, a speaker 17, and a flash memory 18 (= recording unit) are included. Moreover, the 2nd control part 21, the charge control circuit 22, the battery 23 (= vehicle-mounted battery), the 3rd control part 31, the inverter circuit 32, the motor 33, and a drive device which are apparatuses relevant to battery management and vehicle drive 34 is included.

  The first control unit 11 is a central processing unit for centrally controlling each device (for example, the positioning navigation device 13) mainly related to route guidance processing. Further, by communicating with a second control unit 21 and a third control unit 31 which will be described later, a control instruction is transmitted to each device of the electric vehicle 100, and a display instruction for information processed by each device is displayed. It is possible to go to.

  The GPS antenna 12 is a receiver for receiving a specific radio wave (for example, an L1 radio wave of 1.575 GHz) emitted from the GPS satellite 62. The GPS antenna 12 can receive position information from a plurality of GPS satellites 62. The positioning navigation device 13 is a device that decodes a signal received by the GPS antenna 12 to generate latitude / longitude information and includes a navigation device using a gyro or the like.

  The LCD 14 is a display device that displays various information held by the electric vehicle 100, such as a map image and the remaining capacity of the battery 23. The display control unit 15 encodes predetermined image data into a signal that matches the signal format of the LCD 14, performs D / A conversion, and outputs an image signal. The image signal output from the display control unit 15 is sent to the LCD 14 and displayed as an image.

  The operation unit 16 is an input interface for a user to issue a route guidance instruction, a charging process start instruction, and the like. The operation unit 16 is configured to include, for example, a plurality of push buttons, touch sensors, and the like. Alternatively, a touch panel type integrated with the LCD 14 may be used.

  The speaker 17 is a loudspeaker for outputting a sound based on an analog sound signal obtained by a sound processing unit (not shown) decoding sound data and performing D / A conversion. The flash memory 18 is a recording device that temporarily records various data held by the electric vehicle 100. For example, the flash memory 18 has a role of recording values of parameters (described later) used in the charge amount calculation process, setting data, user data, and the like of the electric vehicle 100.

  The second control unit 21 is a central processing unit for centrally controlling each device (for example, the charging control circuit 22) mainly related to the power management process. The second control unit 21 includes a battery control unit 21a, a charge management unit 21b, and a battery monitoring unit 21c as functional units realized by executing a predetermined program on the arithmetic processing provided in the second control unit 21. ing. Details of processing performed by each functional unit will be described later.

  The charge control circuit 22 manages / controls the state of the battery 23 such as the remaining amount in accordance with a control instruction from the second control unit 21. The charging control circuit 22 can charge the battery 23 by receiving power from both the home AC power supply 71 and the commercial AC power supply 72. The battery 23 is supplied with electric power from an external power source and temporarily stores the electric power.

  The third control unit 31 is a central processing unit for centrally controlling each device (for example, the motor 33) mainly related to the drive control processing of the vehicle. The inverter circuit 32 has a role of connecting the battery 23 and the motor 33 and electrically generating AC power from DC power.

The motor 33 drives the drive device 34 using the power supplied from the battery 23. The drive device 34 drives the electric vehicle 100 by, for example, rotating a tire (not shown).
<2. About charging process>
Here, the outline of the charging process performed by the vehicle-mounted device according to the embodiment of the present invention will be described with reference to the flowcharts of FIGS. Note that the circles described in FIGS. 6 and 7 indicate processing connectors. When the processing shifts to the lowercase alphabet identifier, the processing shifts to the corresponding uppercase alphabet identifier. For example, it is assumed that the process shifts to the connector A when the process shifts to the connector a, and the process shifts to the connector B when the process shifts to the connector b.

  The processing flow shown in FIG. 6 is started when the main power supply of the electric vehicle 100 is turned on and the battery is ready for charging. The chargeable state refers to, for example, a case where a protective cover of a connection terminal (not shown) for connecting a household power supply 71 or a commercial power supply 72 is opened, or a case where an external power supply is connected to the connection terminal. And However, even if the charging is enabled, the present process may not be performed until a charging start instruction from the user is detected, and a waiting state for waiting for an instruction may be used.

  After the start of this process, in step S110, the charge management unit 21b displays on the LCD 14 a charge screen for accepting an instruction to select whether or not to charge from the user. Processing branches in step S120 depending on whether or not a charging instruction is accepted on the charging screen. If the charging instruction has not been accepted, the process is terminated. When the charge instruction is accepted, the charge management unit 21b displays on the LCD 14 a minimum charge screen (FIG. 2A) for accepting from the user an instruction to select whether or not to perform the minimum charge in step S130.

  Processing branches in step S130 depending on whether or not a minimum charging instruction has been received on the minimum charging screen. When the minimum charge instruction is not accepted, that is, when “No” is selected in FIG. 2A, the charge management unit 21b accepts selection of whether or not to perform full charge in step S131.

  When the full charge execution instruction is detected, the battery control unit 21a performs the full charge by the charge control circuit 22 in step S132, and then ends the process. When the full charge execution instruction is not detected, the process proceeds to step S110 again.

  Returning to step S130, when the minimum charge instruction is accepted, that is, when “Yes” is selected in FIG. 2A, the charge management unit 21b displays a screen for accepting the destination setting in step S140. (FIG. 2B). When the destination is input on this screen, the first control unit 11 performs a route search using the positioning navigation apparatus 15 and the map data recorded in the flash memory 18 in step S150. As a result, a route from the current position of the vehicle on which the electric vehicle 100 is mounted to the destination is acquired and displayed on the LCD 14 (FIG. 2C).

  Next, in step S160, the charge management unit 21b acquires various parameters (= information used for correcting the charge amount) for calculating the minimum charge amount. FIG. 5 is a schematic diagram illustrating an example of parameters to be acquired. There are roughly two types of parameters. The first parameter (upper side in FIG. 5) acquired by the first control unit based on the processing result of the route guidance process and the second control unit received from the user and acquired. There is a second parameter (lower side in FIG. 5).

  Since the first parameter is obtained from the processing result of the route guidance process, it cannot normally be changed by a user operation. In the example shown in FIG. 5, the first parameter includes the distance traveled to the destination, the level of the road (= height difference), the date and time (= search execution date and time), the traffic situation, and the ETC (Electronic Toll Collection System) usage status. It is included. The required charging amount of the travel distance increases as the distance increases. As for the height of the road, the required charge increases as the height increases. As for the date and time, the required amount of charge increases at night when the lights need to be turned on. The traffic jam condition is acquired from traffic information obtained by VICS, and the required charge amount increases as the traffic jam distance becomes longer. In the ETC usage status, the required charge amount increases when the ETC is used than when the ETC is not used.

  On the other hand, the second parameter is a parameter determined in response to designation from the user, and can be changed by the user at an arbitrary timing. In the example shown in FIG. 5, the number of passengers / loading weight and weather are included in the second parameter. The required number of passengers / loading weight increases as the number of passengers / weight increases. As for the weather, in the case of an extremely hot climate or an extremely cold climate, it is necessary to operate the air conditioner, etc., so that the required charge amount increases. In addition, since it is necessary to operate a wiper or the like in case of rain, the required amount of charge increases.

  Each parameter described above is individually associated with a predetermined coefficient, for example, and the required charge amount is calculated by multiplying the coefficient by a reference charge amount (= charge amount calculated based on the travel distance). I do. For example, when one person is set as the parameter for the number of passengers, the coefficient is increased to 1.00, and when two persons are set, the coefficient is increased to 1.01, and the coefficient is increased as the set number of persons increases. As a result, the calculated required charge amount also increases.

  In this way, by determining the coefficient corresponding to the value of the parameter in advance, it is possible to calculate the necessary charge amount corresponding to the traveling situation. It is assumed that the relationship between the parameter value and the coefficient is adjusted in advance before the electric vehicle 100 is shipped from the factory and recorded in a recording medium such as the flash memory 18.

  Next, in step S170, the charge management unit 21b requests the user to select whether or not to change the content of the second parameter described above. On the other hand, when execution of content change is instructed, the charge management unit 21b displays a parameter setting screen (FIG. 3A) on the LCD 14 in step S180. Note that if the execution of the content change is not instructed, the process proceeds to step S190 described later.

  As shown in FIG. 3A, on the parameter setting screen, the user can manually select whether or not to use an air conditioner, Audio, RES (Rear-Seat Entertainment System), TV, or the like. When these electronic devices are used, that is, when set to ON, power consumption increases, so that the calculated charge amount also increases.

  When various parameters are set by a user operation on the parameter setting screen, the charge management unit 21 b records the set values in the flash memory 18. Next, in step S190, the charge management unit 21b calculates a required charge amount and a required charge time for each route based on the first parameter and the second parameter described above.

  It is assumed that the charging time corresponding to the amount of charge is calculated in advance before factory shipment of the electric vehicle 100 based on the performance of the battery 23 and the charge control circuit 22 and recorded in the flash memory 18 and the like. Further, during the calculation process, a process progress screen as shown in FIG.

  When the calculation process is completed, in step S200, the charge management unit 21b displays a screen (FIG. 3C) showing the charging time for each route. At this time, a route with a short charge time is preferentially displayed. Then, on this screen, an instruction for selecting which route is to be charged is awaited. Next, in step S210, the charge management unit 21b branches the process depending on whether a selection instruction has been accepted.

  If a selection instruction has not been received, the process proceeds to step S200 again. If the selection instruction is not accepted even after a predetermined time has elapsed, the present process may be terminated. When the selection instruction is received, the charge management unit 21b displays a final confirmation screen (FIG. 4) for determining whether or not to start the minimum charge in step S220 (FIG. 7).

  Next, in step S230, the charge management unit 21b branches the process depending on whether a determination instruction on the final confirmation screen has been accepted. When the determination instruction is accepted, that is, when “Yes” is selected in FIG. 4, the battery control unit 21 a starts charging by the charging control circuit 22 in step S <b> 240. At this time, charging is performed for the length of the charging time of the path selected in step S240, that is, the screen of FIG.

  Next, in step S250, the battery control unit 21a monitors whether or not charging is completed. If charging has not been completed, the process proceeds to step S250 again and monitoring is continued. When the charging is completed, a screen indicating the completion of charging is displayed on the LCD 14 in step S260, and this process is terminated.

  Returning to step S230, if the determination instruction for starting charging is not received, that is, if “NO” is selected in FIG. 4, the charge management unit 21b displays a setting change screen for changing various setting items. indicate. In step S231, it is determined whether a route change instruction has been accepted on the setting change screen.

  When it receives, it transfers to step S200 again. If not accepted, it is determined in step S232 whether or not a parameter change instruction has been accepted. If accepted, the process proceeds to step S180 again. If not received, it is determined in step S233 whether a destination change instruction has been received.

  If accepted, the process proceeds to step S140 again. If not accepted, it is determined in step S234 whether or not an instruction to change the charging method has been accepted. If accepted, the process proceeds to step S130 again. If not accepted, it is determined in step S235 whether or not a charge stop instruction has been accepted.

If accepted, the charging process is interrupted and the process is terminated. When not received, it transfers to step S230 again. Note that the processing described above is interrupted at a timing such as when the main power source of the electric vehicle 100 is stopped or when the connection of the external power source connected to the charging control circuit 22 is released. Is possible.
<3. About battery monitoring while driving>
Here, a battery monitoring process during vehicle travel performed by the in-vehicle device according to the embodiment of the present invention will be described with reference to the flowchart of FIG.

  The flow shown in FIG. 8 is started when the route search and the minimum charging according to FIGS. 6 and 7 are performed and the first control unit 11 detects that the electric vehicle 100 has started running.

  After the start of this process, the first control unit 11 determines in step S310 whether or not the GPS antenna 12 and the positioning navigation apparatus 13 are traveling on the designated route designated in the processes of FIGS. . In a case where it is determined that the route is not within the designated route, the battery monitoring unit 21c notifies a warning in step S311. This is performed, for example, by displaying a warning image on the LCD 14 indicating that there is a possibility that the amount of charge will be insufficient, or by outputting a notification sound from the speaker 17.

  If it is determined that the specified route is not deviated, the battery monitoring unit 21c determines in step S320 whether a change in the setting parameter has been detected. The setting parameter can be changed by, for example, displaying a parameter setting screen on the LCD 14 when a setting change operation by the operation unit 16 is received.

  If a parameter change is detected, the process proceeds to step S311. When the parameter change is not detected, the battery monitoring unit 21c determines whether or not the third control unit 31 detects the sudden acceleration / deceleration of the vehicle by the motor 33 and the driving device 34 in step S330.

  If sudden acceleration / deceleration is detected, the process proceeds to step S311. If it is determined that the rapid acceleration / deceleration is not detected, the battery monitoring unit 21c determines whether or not the amount of charge to the destination is stored in the battery 23 in step S340.

  When it is determined that the battery is charged, the process proceeds to step S310 again. When it is determined that the battery is not charged, that is, the amount of charge is insufficient, the battery monitoring unit 21c outputs an image or a sound indicating that charging is necessary through the LCD 14 or the speaker 17 in step S350.

  Next, in step S360, the first control unit 11 searches for the nearest charging station from the map information recorded in the flash memory 18 and the current position calculated by the positioning navigation device 13. Then, after the search result is displayed on the LCD 14, the present process is terminated. In addition, when the amount of charge is insufficient, the form which requests the change of a destination and transfers to the state which waits for a change instruction | indication may be sufficient.

According to the present embodiment described above, the amount of charge and the charging time required from the current location to the destination are calculated based on the parameters shown in FIG. For this reason, compared with the case where a charge amount is determined while relying on a user's experience, the meter which shows charge amount, etc., a more highly accurate charge amount and charge time can be calculated. Therefore, it is possible to avoid a shortage of charging amount while omitting extra charging time. Thereby, for example, when performing short-distance movement such as going shopping in the neighborhood, it is possible to quickly perform the minimum charge.
[Other embodiments]
The present invention has been described with reference to the preferred embodiments and examples. However, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea. be able to.

Therefore, the present invention can also be applied to the following embodiments.
(A) In the above embodiment, the required charge amount is calculated by multiplying the reference charge amount by a coefficient corresponding to the value of each parameter. However, a method of calculating the required charge amount without using the coefficient may be used. For example, it may be determined whether or not a predetermined parameter exceeds a threshold value, and when the threshold value is exceeded, the required charge amount may be calculated by a calculation method such as increasing the reference charge amount by a predetermined amount.

  (B) In the above embodiment, when charging is required in step S340 of FIG. 8, a process of automatically searching for a charging station is performed. However, when charging is required, a stand search from the user is performed. The state may be such that the state shifts to a state of waiting for an instruction, and the charging station is searched when the instruction is received. Alternatively, the charging station may be searched when the charging amount falls below a predetermined value. Thereby, the frequency which performs a stand search can be reduced and the load concerning the 1st control part 11 can be reduced.

  (C) In the above embodiment, the various functional units of the second control unit 21 related to the various processes of the present invention are realized by executing a program on an arithmetic processing unit such as a microprocessor. May be realized by a plurality of circuits.

  (D) In the above embodiment, the electric vehicle 100 includes a device (first control unit 11 to flash memory 18) related to route guidance processing and a device (second control unit 21 to driving device) related to driving of a battery and a vehicle. 34) is described as an example, but it is not always necessary that all of these are provided in the vehicle. For example, some or all of the functions of the charge management unit 21b and the battery monitoring unit 21c are realized by a communication device that exists in a communication network, and the electric vehicle 100 communicates with the communication device via the communication network. An embodiment for carrying out the invention may be used.

  (E) In connection with the above, the 1st control part 11 may be equipped with the charge management part 21b and / or the battery monitoring part 21c. That is, the form which implement | achieves the charge management part 21b and / or the battery monitoring part 21c by running a predetermined | prescribed program on the arithmetic processing apparatus with which the 1st control 11 is provided may be sufficient. In this case, by setting the vehicle-mounted device including the first control unit 11 to the flash memory 18 as an independent navigation device, it is possible to appropriately change the vehicle on which the vehicle-mounted device is mounted. Thereby, provision of the vehicle-mounted apparatus provided with the charge management function and / or battery monitoring function of this invention can be performed more simply.

It is a block diagram which shows the apparatus structure of the electric vehicle carrying the vehicle-mounted apparatus of this invention. It is a screen figure which shows an example of a charge implementation screen. It is a screen figure which shows an example of a charge implementation screen. It is a screen figure which shows an example of a charge implementation screen. It is a schematic diagram which shows an example of a parameter. It is a flowchart which shows a charging process. It is a flowchart which shows a charging process. It is a flowchart which shows the battery monitoring process in driving | running | working.

Explanation of symbols

100 electric vehicle 11 first control unit (route search unit)
12 GPS antenna (GPS device)
13 Positioning navigation device (GPS device)
14 LCD (display unit)
16 Operation unit 18 Flash memory (recording unit)
21 2nd control part 21a Battery control part 21b Charge management part 21c Battery monitoring part 23 Battery (vehicle-mounted battery)

Claims (9)

In the in-vehicle device equipped with a route search unit that receives a destination designation and performs a route search,
A charge management unit that calculates a charge amount necessary for an electric vehicle to travel on the route searched by the route search unit, calculates a charge time required for a charge process based on the charge amount, and notifies the charge time A vehicle-mounted device characterized by comprising: A GPS (Global Positioning System) device;
A display unit for displaying an image;
An operation unit for receiving an instruction to the in-vehicle device;
A recording unit for recording map information,
The route search unit performs a route search based on the position of the electric vehicle obtained by the GPS device, the destination received by the operation unit, and the map information,
The in-vehicle device according to claim 1, wherein the charge management unit displays an image indicating the calculated charging time on the display unit. 3. The charge amount calculation unit according to claim 1, wherein the charge management unit calculates the charge amount based on a distance of a route searched by the route search unit, a height difference, or a search execution date and time. In-vehicle device. The in-vehicle device according to claim 3, wherein the charge management unit receives a number of passengers or a loaded weight of the electric vehicle and corrects the charge amount based on the received value. The charge management unit accepts designation of use / unuse of an electronic device mounted on the electric vehicle for each electronic device, and corrects the charge amount based on the designation. The in-vehicle device described in 1. It has a traffic information acquisition unit that receives traffic information,
The in-vehicle device according to claim 3, wherein the charge management unit corrects the charge amount based on traffic jam information included in traffic information acquired by the traffic information acquisition unit. Whether or not a change in the content of the information used for calculating or correcting the charge amount has occurred during traveling based on the route searched by the route search unit and the charge amount calculated by the charge management unit. The in-vehicle device according to claim 2, further comprising a battery monitoring unit that monitors and displays an image indicating a warning on the display unit when the content change is detected. When the battery monitoring unit travels based on the route searched by the route search unit and the charge amount calculated by the charge management unit, a change in the travel route or acceleration / deceleration exceeding a predetermined value occurs. The in-vehicle apparatus according to claim 7, wherein whether or not the occurrence has occurred is monitored, and an image indicating a warning is displayed on the display unit when the change or the acceleration / deceleration is detected. The amount of charge of the in-vehicle battery that supplies power to the electric vehicle while the battery monitoring unit travels based on the route searched by the route search unit and the charge amount calculated by the charge management unit And instructing the route search unit to search for a route to a charging facility when it is detected that the route cannot be completed with the amount of charge. apparatus.

Images