JP5533528B2 - In-vehicle power supply control device - Google Patents

Description

  The present invention makes it possible to connect a plurality of external devices to a plurality of connection portions provided in a vehicle interior or the like in a vehicle equipped with a solar power generation unit such as a solar power generation panel and a power storage unit such as a battery. The present invention relates to an in-vehicle power supply control device that supplies electric power generated by solar power generation or electric power accumulated in a power storage unit to connected external devices.

  2. Description of the Related Art Conventionally, a vehicle is provided with a power socket for supplying power generated during traveling and power stored in a battery to an external device. The user can use these external devices in the vehicle or around the vehicle by connecting external devices such as portable electric devices to the power socket. However, if the external device is continuously used while the vehicle engine is stopped, there is a possibility that the amount of power stored in the battery is smaller than the amount of power required for starting the engine, that is, the battery is running out.

  In addition, by providing a plurality of power sockets in the vehicle, the user can use a plurality of external devices at the same time, and the convenience in the vehicle can be improved. There is a problem that the amount of power consumed from the battery increases, and the possibility of battery exhaustion increases.

  Patent Document 1 proposes a power feeding system that can effectively use energy obtained by natural power generation as power without waste. This power supply system includes a secondary battery that accumulates the generated power of the solar battery, a power converter that supplies the generated power from the solar battery to either or both of the load system and the secondary battery, and the generated power of the solar battery. A booster that boosts the voltage and supplies it to the secondary battery, and a selection control device that connects the solar battery to either the booster or the power converter according to the generated power of the solar battery. Thus, even when the amount of power generated by the solar cell is small due to rain or the like, the power boosted by the booster can be stored in the secondary battery.

Japanese Patent Laid-Open No. 2004-23879

  A system using a solar cell as in the invention described in Patent Document 1 is mounted on a vehicle, and the power generated by the solar cell is supplied to an external device connected to a power socket. Can be suppressed. However, power consumption varies depending on the type of external device. When multiple external devices with high power consumption are operated, the overall power consumption exceeds the power generated by the solar cell and is stored in the battery. There is a risk of consuming electric power in a short time.

  For this reason, the user grasps the power generated by the solar cell and the power stored in the battery, and the power consumption of the external device connected to the vehicle power socket, so that the external battery is properly connected so that the battery does not run out. It is desirable to use equipment. However, it is not easy for a user to use an external device in consideration of power consumption.

  This invention is made | formed in view of such a situation, The place made into the objective mounts a photovoltaic power generation part (solar cell) and an electrical storage part (battery), and is a several connection part (power socket). In a vehicle that can supply power to the vehicle, the user can use the external device in consideration of the power generated by the solar power generation unit, the amount of power stored in the power storage unit, the power consumption of the external device, and the like. It is an object of the present invention to provide an in-vehicle power supply control device that can prevent the battery from running out.

  An in-vehicle power supply control device according to the present invention performs control related to power supply from a solar power generation unit and a power storage unit mounted on a vehicle to a plurality of connection units provided in the vehicle in order to connect an external device. In the in-vehicle power supply control device including the control means for performing the operation, the power generation detection means for detecting the power value generated by the solar power generation section, the power storage detection means for detecting the amount of power stored in the power storage section, and the connection section. The storage means that stores the estimated power consumption value of the external device to be obtained in advance for each type of the external device, the supply source selection reception unit that receives the selection of the power supply source to the external device connected to the connection unit, and Based on a device type selection receiving unit that receives selection of types of external devices connected to a plurality of connection units, a type received by the device type selection receiving unit, and an estimated power consumption value stored in the storage unit A calculation unit that calculates a total value of estimated power consumption values of external devices connected to the plurality of connection units, a power value related to a power supply source received by the supply source selection reception unit, and a calculation unit that calculates And a display means for displaying the total value of the estimated power consumption values.

  Further, the in-vehicle power supply control device according to the present invention is such that the device type selection receiving unit sequentially receives selection of a plurality of types of external devices connected to the plurality of connection units, and the calculation unit Each time the device type selection accepting unit accepts the selection, the total value is calculated, and each time the device type selection accepting unit accepts the selection, the total value of the estimated power consumption values is related to the power supply source. The apparatus further includes a limiting unit that limits subsequent selection reception by the device type selection reception unit so as not to exceed the power value.

  Further, in the in-vehicle power supply control device according to the present invention, the limiting means calculates a consumable remaining power value from the total value of the power value related to the selected power supply source and the calculated estimated power consumption value, The acceptance of selection by the device type selection accepting unit is restricted so that the type of external device whose estimated power consumption value stored in the storage unit exceeds the remaining power value cannot be selected. Features.

  Moreover, the on-vehicle power supply control device according to the present invention is configured to accumulate in the power storage unit surplus power that is generated by the solar power generation unit and is not consumed by an external device connected to the connection unit. It is characterized by.

  Further, the in-vehicle power supply control device according to the present invention provides the estimated consumption stored in the storage means when the power value related to the selected power supply source is smaller than the total value of the calculated estimated power consumption values. Based on the power value, the power supply to the connection unit connected to the external device having a small estimated power consumption value is stopped.

In the present invention, the estimated power consumption value of an external device that can be connected to a connection unit is determined by the type of the external device in a vehicle that is equipped with a solar power generation unit and a power storage unit and that can supply power to a plurality of connection units. Each is stored in advance, and when the external device is connected to the connection unit, the selection of the type of the external device to be connected is received from the user. The type selection can be received by a method of displaying a list of types of external devices on a liquid crystal panel or the like and allowing the user to select the type. Accepts the selection of the external device type for each of the plurality of connections, reads the estimated power consumption value corresponding to the selected external device type, calculates the total estimated power consumption value of the external device, and calculates the total The value is displayed on the LCD panel.
In addition, it accepts a selection of either a solar power generation unit or a power storage unit from a user as a supply source for supplying power to a plurality of connection units, and detects a power value generated by the solar power generation unit and a power storage amount of the power storage unit, respectively. The power value related to the photovoltaic power generation unit or the power storage unit selected as the power supply source is displayed.
Thus, the user can connect the external device to the connection unit while confirming the display of the power value related to the selected power supply source and the estimated power consumption value of the external device. Therefore, the user can connect and use the external device so as not to exceed the power value of the power supply source, and it is possible to prevent the battery from running out of the vehicle (a reduction in the amount of power stored in the power storage unit).

Also, in the present invention, when accepting the selection of types of external devices connected to a plurality of connection units, the selection of types is accepted in order, rather than accepting the selection of a plurality of types simultaneously. Each time one is received, the total estimated power consumption value is calculated and displayed. As a result, the user can confirm the increase in the power consumption value by the external device selected by the user, and can confirm the power consumption value of the external device.
Furthermore, every time one type selection is accepted, based on the total value of the power value of the power supply source and the estimated power consumption value, the total value of the estimated power consumption value is subsequently supplied by the external device connected to the connection unit. In order not to exceed the original power value, the types of external devices that can be selected are restricted in the subsequent selection of the external device type. As a result, it is possible to prevent the user from mistakenly connecting an external device with high power consumption.

  Specifically, the power value generated by the photovoltaic power generation unit selected as the power supply source or the power value based on the power storage amount of the power storage unit, and the estimated power consumption value of the external device that has received the selection of the type so far The remaining power value that can be consumed is calculated from the total value, and selection restriction is performed so that the types of external devices whose estimated power consumption value exceeds the remaining power value cannot be selected. Thereby, it is possible to prevent an external device having power consumption exceeding the power value of the power supply source from being selected and connected to the connection unit and used by the user.

  Further, in the present invention, since sufficient power is generated by the solar power generation unit and the power consumption value of the external device connected to the connection unit is small, surplus power is generated. Therefore, the surplus power is stored. Accumulate in the department. Thereby, since electric power is stored in the power storage unit, it is possible to suppress the battery from running out of the vehicle.

In addition, after selecting the solar power generation unit as the power supply source, the power value generated by the solar power generation unit due to factors such as changes in the weather (from clear to rainy weather) or changes in the amount of sunlight (from daytime to nighttime) May change. After the power storage unit is selected as the power supply source, the accumulated power is consumed by the operation of the external device, and the power storage amount of the power storage unit changes.
Therefore, in the present invention, after receiving the selection of the power supply source and the selection of the type of the external device, when the power value of the power supply source becomes smaller than the total estimated power consumption value, the estimated power consumption value is small. The power supply is stopped from the connection part to which the device is connected. Thereby, it becomes possible to use an external device with a large power consumption value to the end among a plurality of external devices being used by the user.

  In the case of the present invention, the selection of the type of the external device connected to the plurality of connection units is accepted, and the total value of the estimated power consumption value by the selected external device is calculated and displayed, and the photovoltaic power generation as the power supply source By accepting the selection of either the power supply unit or the power storage unit and detecting and displaying the power value related to the selected power supply source, the user can determine the power value related to the power supply source and the estimated power consumption of the external device. External devices can be connected and used while checking the value display. Therefore, since the user can use an appropriate external device, it is possible to prevent the battery from running out.

It is a block diagram which shows the structure of the vehicle-mounted power supply control apparatus which concerns on this invention. It is a schematic diagram which shows one structural example of the display part and operation part of a vehicle-mounted power supply control apparatus. It is a schematic diagram which shows one structural example of the display part and operation part of a vehicle-mounted power supply control apparatus. It is a flowchart which shows the procedure of the process which the vehicle-mounted power supply control apparatus which concerns on this invention performs. It is a flowchart which shows the procedure of the process which the vehicle-mounted power supply control apparatus which concerns on this invention performs. It is a flowchart which shows the procedure of the process which the vehicle-mounted power supply control apparatus which concerns on this invention performs. It is a flowchart which shows the procedure of the electric power supply stop process which the vehicle-mounted electric power supply control apparatus which concerns on a modification performs.

  Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof. FIG. 1 is a block diagram showing a configuration of an in-vehicle power supply control device according to the present invention. In FIG. 1, the power supply path is indicated by a thick line, and the signal transmission path is indicated by a thin line arrow. In the figure, 1 indicated by a broken line is a vehicle, and the vehicle 1 is equipped with a solar power generation unit 21 and a power storage unit 22. The solar power generation unit 21 is a device that is arranged on the surface of the vehicle body of the vehicle 1 in a panel shape, for example, and converts light energy such as sunlight into electric power and outputs (that is, generates power). The electric power generated by the solar power generation unit 21 is output to the in-vehicle power supply control device 10.

  The power storage unit 22 stores the power supplied from the in-vehicle power supply control device 10 and supplies the stored power to the external device 30 connected to the connection unit 15 of the in-vehicle power supply control device 10. The power storage unit 22 can be composed of, for example, a lead storage battery (so-called battery) mounted on a conventional vehicle, or can be composed of, for example, a lithium ion battery mounted on an electric vehicle or the like. The electric power stored in the power storage unit 22 is electric power generated by the solar power generation unit 21, and may be electric power generated by another generator (such as an alternator) of the vehicle 1.

  The in-vehicle power supply control device 10 is arranged near the driver's seat of the vehicle 1 and the like, and includes a power supply control unit 11, a display unit 12, an operation unit 13, an estimated power consumption value storage unit 14, a power generation detection unit 16, and a power storage detection unit 17. And a plurality of (five in FIG. 1) connection portions 15. The power supply control unit 11 is connected to each of the photovoltaic power generation unit 21, the power storage unit 22, and the plurality of connection units 15 via individual power supply paths, and connects / cuts off the plurality of power supply paths. By controlling, power supply control from the solar power generation unit 21 or the power storage unit 22 to each connection unit 15 and power supply control from the solar power generation unit 21 to the power storage unit 22 are performed. The power supply control unit 11 may include a conversion circuit that converts the voltage value or current value of the power supplied from the solar power generation unit 21 or the power storage unit 22 and outputs the converted value to the connection unit 15.

  The display unit 12 is configured by a liquid crystal panel or the like disposed in the vicinity of the driver's seat of the vehicle 1, and displays various information according to commands given from the power supply control unit 11. The operation unit 13 includes a plurality of switches arranged in the vicinity of the display unit 12, and receives a user operation and notifies the power supply control unit 11. Detailed configurations of the display unit 12 and the operation unit 13 will be described later.

  The estimated power consumption value storage unit 14 is composed of a nonvolatile memory element such as a mask ROM (Read Only Memory), an EEPROM (Electrically Erasable Programmable ROM), or a flash memory. The estimated power consumption value storage unit 14 estimates that the types of external devices 30 that can be connected to the connection unit 15 (for example, portable TV, LED (Light Emitting Diode) lights, electric blankets, etc.) are consumed by these types of external devices 30. Are stored in association with each other (for example, 30 W, 50 W, 100 W, etc.). The storage of these pieces of information in the estimated power consumption value storage unit 14 is performed in advance in the manufacturing process of the in-vehicle power supply control device 10 or the like. The power supply control unit 11 reads information stored in the estimated power consumption value storage unit 14 and performs various processes based on the information.

  The connection unit 15 includes a power socket or the like into which a power plug provided in the external device 30 is inserted, and the external device 30 is connected to the in-vehicle power supply control device 10 by inserting the power plug into the power socket. The power supply path from the power supply control unit 11 to the external device 30 is connected. Different types of external devices 30 can be connected to the connection unit 15, and the in-vehicle power supply control device 10 includes a plurality of connection units 15, so that the user can connect a plurality of types of external devices 30 in the vehicle 1. Can be used simultaneously. The plurality of connecting portions 15 may be concentrated in the same location of the vehicle 1 or may be distributed in appropriate locations in the vehicle 1.

  The power generation detection unit 16 is disposed in the vicinity of the solar power generation unit 21 (or in the power supply path from the solar power generation unit 21 to the power supply control unit 11), and determines the power value generated by the solar power generation unit 21. Detect and notify the power supply control unit 11.

  The power storage detection unit 17 is disposed in the vicinity of the power storage unit 22, detects the amount of power stored in the power storage unit 22, and notifies the power supply control unit 11. The power storage detection unit 17 may be configured to estimate the power storage amount by measuring the terminal voltage of the input / output terminal of the power storage unit 22, for example, and calculate the integrated value of the current amount input to and output from the power storage unit 22, for example. Thus, the storage amount may be detected, or the storage amount may be detected by other methods.

  The external device 30 is a device that has a power plug that can be connected to the connection portion 15 provided in the vehicle 1 and operates by the power supplied to the power plug. The external device 30 may be various electric devices such as a portable television, an LED light, or an electric blanket.

The power supply control unit 11 of the in-vehicle power supply control device 10 performs the following processing related to information exchange with the user.
(1) Processing to accept selection of the solar power generation unit 21 or the power storage unit 22 by the operation unit 13 as a power supply source to the external device 30.
(2) A process of displaying the power value related to the selected power supply source on the display unit 12 based on the detection result of the power generation detection unit 16 or the power storage detection unit 17.
(3) Processing for accepting selection of the type of the external device 30 connected to each connection unit 15 by the operation unit 13.
(4) Processing for displaying the estimated power consumption value of the external device 30 whose type is selected on the display unit 12.

  2 and 3 are schematic diagrams illustrating an example of the configuration of the display unit 12 and the operation unit 13 of the in-vehicle power supply control device 10. The illustrated example is a configuration in which the display unit 12 and the operation unit 13 of the in-vehicle power supply control device 10 are provided together with the display unit and the operation unit of an air conditioner (hereinafter simply referred to as an air conditioner) of the vehicle 1. A display unit 12 using a rectangular liquid crystal panel is provided, an operation unit 13 of the in-vehicle power supply control device 10 is provided on the right side of the display unit 12, and an operation unit of an air conditioner is provided on the left side of the display unit 12. The display unit 12 has an area of about 2/3 on the right side as a display area for the in-vehicle power supply control device 10 and an area of about 1/3 on the left side as a display area for an air conditioner.

  The operation unit 13 of the in-vehicle power supply control device 10 is provided with a solar cell selection switch 13a, a battery selection switch 13b, a confirmation switch 13c, a cancel switch 13d, and a vertical movement switch 13e. The solar cell selection switch 13a and the battery selection switch 13b are switches for receiving selection of a power supply source to the external device 30. When the solar cell selection switch 13a is operated, the power supply control unit 11 connects the power supply path from the solar power generation unit 21 to the connection unit 15 so that the solar power generation unit 21 becomes a power supply source. In addition, when the battery selection switch 13b is operated, the power supply control unit 11 connects the power supply path from the power storage unit 22 to the connection unit 15 so that the power storage unit 22 becomes a power supply source.

  Furthermore, the power supply control unit 11 displays the power supply source selected by the solar cell selection switch 13 a or the battery selection switch 13 b at the approximate center of the display unit 12. FIG. 2 shows a display example when the solar power generation unit 21 is selected, and FIG. 3 shows a display example when the power storage unit 22 is selected. The display of the power supply source includes a name of a solar cell or battery indicating the power supply source, a power value supplied by the power supply source, and an icon schematically indicating the power supply source.

  When the solar power generation unit 21 is selected, the power supply control unit 11 displays the power value detected by the power generation detection unit 16 as the power value of the power supply source. In addition, when the power storage unit 22 is selected, the power supply control unit 11 connects to the connection unit 15 for a predetermined time (for example, 10 hours) based on the amount of power stored in the power storage unit 22 detected by the power storage detection unit 17. The power value that can be supplied to the external device 30 (that is, the stored energy / the power value corresponding to the predetermined time) is calculated, and the calculation result is displayed as the power value of the power supply source.

  The confirmation switch 13c, the cancel switch 13d, and the up / down movement switch 13e of the operation unit 13 are switches for accepting the type selection of the external device 30 connected to the connection unit 15. The power supply control unit 11 displays a list of names of types of external devices 30 that can be connected to the connection unit 15 in the right area of the display unit 12 in the vertical direction. Information relating to the name of the type necessary for display is stored in the estimated power consumption value storage unit 14 in advance. The power supply control unit 11 displays one arrow on the left side of the list of type names, and this arrow is displayed in response to an operation on the up / down movement switch 13e so that this arrow indicates any one type name. Move up and down. If not all of the category names can be displayed as a list on the display unit 12, the category names may be scrolled according to the vertical movement of the arrow.

  When an operation is performed on the confirmation switch 13c, the power supply control unit 11 displays a selection mark with a circle on the left side of the type name, assuming that the external device 30 indicated by the arrow is selected by the user. Further, when an operation is performed on the cancel switch 13d, the power supply control unit 11 hides the selection mark on the left side of the type name, assuming that the selection of the external device 30 indicated by the arrow is canceled by the user. As a result, the power supply control unit 11 can sequentially accept the selection of the type of the external device 30 connected to the connection unit 15 one by one. FIG. 2 shows a state where the electric blanket and the LED light are selected, and FIG. 3 shows a state where the refrigerator and the electric blanket are selected.

  In addition, when the power supply control unit 11 receives selection / non-selection of the types of the external devices 30 connected to the connection unit 15 by the confirmation switch 13c or the cancel switch 13d, the power supply control unit 11 estimates the consumption for all types of the selected external devices 30. The estimated power consumption values stored in the power value storage unit 14 are read out, and the total value of the read estimated power consumption values is calculated. The power supply control unit 11 displays the calculated total power consumption value in the lower area of the display unit 12 as the total power consumption. Note that the calculation of the total estimated power consumption value by the power supply control unit 11 and the display of the calculation result are performed every time the confirmation switch 13c or the cancel switch 13d is operated.

  When the user connects the external device 30 to the connection unit 15 and uses it, the user first operates the solar cell selection switch 13a or the battery selection switch 13b to select a power supply source, and then selects the confirmation switch 13c, the cancel switch 13d or The type of the external device 30 connected to the connection unit 15 is selected by operating the up / down movement switch 13e. By these selection operations, the display unit 12 displays the power value related to the power supply source and the total value of the estimated power consumption value of the external device 30 connected (connected) to the connection unit 15. The user can connect the external device 30 after confirming these displays.

  Further, the power supply control unit 11 calculates a surplus power value that can be supplied to another external device 30 by subtracting the total value of the estimated power consumption values of the external device 30 from the power value related to the power supply source. be able to. The power supply control unit 11 compares the calculated surplus power value with the estimated power consumption values of each type of the external device 30, and the type of the external device 30 whose estimated power consumption value exceeds the surplus power value cannot be selected. To be limited. Thereby, it is possible to prevent the total value of the estimated power consumption values from exceeding the power value related to the power supply source. At this time, the power supply control unit 11 uses a different method (for example, display color, density, character) in the list display of the type of the external device 30 performed on the display unit 12 from the selectable one and the nonselectable one. Display with a different thickness or font). In the example illustrated in FIG. 2, the type “refrigerator” of the external device 30 is not selectable and is displayed in finer characters than other types.

  In addition, when the solar power generation unit 21 is selected as the power supply source, the power supply control unit 11 has a power value generated by the solar power generation unit 21 greater than the total estimated power consumption value of the external device 30 In this case, power is stored by supplying surplus power to the power storage unit 22.

  4 to 6 are flowcharts showing a procedure of processing performed by the in-vehicle power supply control device 10 according to the present invention. FIGS. 4 and 5 show processing related to acceptance of selection of a power supply source, and FIG. Shows processing related to the type selection acceptance of the external device 30. The power supply control unit 11 of the in-vehicle power supply control device 10 determines whether or not the operation of the operation unit 13 with respect to the solar cell selection switch 13a or the battery selection switch 13b is performed, whereby the user selects the power supply source. Whether or not the power supply source has not been selected (S1: NO), the process waits until the selection is made.

  When the power supply source is selected (S1: YES), the power supply control unit 11 checks whether or not the solar power generation unit 21 is selected as the power supply source (step S2). When the solar power generation unit 21 is selected as the power supply source (S2: YES), the power supply control unit 11 detects the power value generated by the solar power generation unit 21 in the power generation detection unit 16 (step S3). Then, it is determined whether or not the detected power value is equal to or greater than the power consumption value (total value of the estimated power consumption value) of the external device 30 connected to the connection unit 15 (step S4). When the power value to be generated is less than the power consumption value (S4: NO), the power supply control unit 11 displays a warning on the display unit 12 (step S5), and ends the process without switching the power supply source. To do.

  When the power value generated by the solar power generation unit 21 is equal to or greater than the power consumption value of the external device 30 (S4: YES), the power supply control unit 11 sets the display related to the power supply source of the display unit 12 as a solar cell. The display is updated to display the power value detected by the power generation detection unit 16 (step S6). Next, the power supply control unit 11 starts power supply from the solar power generation unit 21 to the external device 30 connected to the connection unit 15 by connecting the power supply path from the solar power generation unit 21 to the connection unit 15. (Step S7).

  At this time, the power supply control unit 11 determines whether or not there is surplus power by determining whether or not the power value generated by the solar power generation unit 21 is greater than the power consumption value of the external device 30 (step) S8). When there is surplus power (S8: YES), the power supply control unit 11 supplies the surplus power to the power storage unit 22 to perform power storage (step S9), and when there is no surplus power (S8). : NO), the process is terminated without performing power storage.

  In step S2, if the photovoltaic power generation unit 21 is not selected as the power supply source and the power storage unit 22 is selected (S2: NO), the power supply control unit 11 stores power in the power storage detection unit 17. The power storage amount of the unit 22 is detected (step S10), and the power value that the power storage unit 22 can continuously supply over a predetermined time is calculated from the detected power storage amount (step S11). Next, the power supply control unit 11 determines whether or not the calculated power value is greater than or equal to the power consumption value (total value of the estimated power consumption value) of the external device 30 connected to the connection unit 15 (step S12). When the power value that can be supplied by the power storage unit 22 is less than the power consumption value of the external device 30 (S12: NO), the power supply control unit 11 displays a warning on the display unit 12 (step S13). The process is terminated without switching.

  When the power value that can be supplied by the power storage unit 22 is greater than or equal to the power consumption value of the external device 30 (S12: YES), the power supply control unit 11 uses the display related to the power supply source of the display unit 12 as a battery, and step S11. The display is updated in order to display the power value calculated in (Step S14). Next, the power supply control unit 11 starts power supply from the power storage unit 22 to the external device 30 connected to the connection unit 15 by connecting a power supply path from the power storage unit 22 to the connection unit 15 (step S15). ), The process is terminated.

  In addition, the power supply control unit 11 of the in-vehicle power supply control device 10 determines whether or not the operation on the confirmation switch 13c or the cancel switch 13d of the operation unit 13 has been performed, so that the external device 30 connected to the connection unit 15 It is determined whether or not type selection has been made (step S31). If no type selection has been made (S31: NO), the system waits until a selection is made.

  When the type selection of the external device 30 is made (S31: YES), the power supply control unit 11 reads the estimated power consumption value from the estimated power value storage unit 14 for all the types of the selected external device 30 (step) S32), a total value of the read estimated power consumption values is calculated (step S33). Further, the power supply control unit 11 calculates a surplus power value by subtracting the calculated total power consumption value from the power value related to the power supply source (step S34), and estimates the estimated power consumption from the calculated surplus power value. The type of the external device 30 having a large value is determined to be non-selected (step S35). Next, the power supply control unit 11 attaches a selection mark to the selected type of the external device 30, removes the selection mark from the type of the external device 30 that has been deselected, and deselects in step S35. In order to change the display method for the type of the external device 30 that has been determined, the display on the display unit 12 is updated (step S36), and the process is terminated.

  In the in-vehicle power supply control device 10 having the above configuration, the estimated power consumption value of the external device 30 that can be connected to the connection unit 15 is stored in the estimated power consumption value storage unit 14 for each type, and the type of the external device 30 is stored. By selecting and receiving the selection from the user, calculating and displaying the total value of the estimated power consumption value, and selecting the photovoltaic power generation unit 21 or the power storage unit 22 as the power supply source and displaying the power value The user can connect the external device 30 to the connection unit 15 while confirming the display of the power value related to the selected power supply source and the estimated power consumption value of the external device 30. Therefore, the user can connect and use the external device 30 so as not to exceed the power value related to the power supply source, and can prevent the battery of the vehicle 1 from running out.

  In addition, the selection of the type of the external device 30 is sequentially received, and the total value of the estimated power consumption value is calculated and displayed each time the selection is received, and the total value does not exceed the power value related to the power supply source. As described above, by adopting a configuration that restricts selection in the subsequent type selection, it is possible to prevent the user from erroneously connecting the external device 30 having a large power consumption value. The in-vehicle power supply control device 10 calculates a remaining power value that can be consumed from the power value related to the selected power supply source and the total value of the estimated power consumption values of the external devices 30 that have received selections so far. Thus, the selection restriction is performed so that the type of the external device whose estimated power consumption value exceeds the remaining power value cannot be selected.

  In addition, a configuration in which surplus power generated when sufficient power is generated by the solar power generation unit 21 and the power consumption value of the external device 30 connected to the connection unit 15 is small is supplied to the power storage unit 22 and stored. As a result, the amount of electricity stored in the electricity storage unit 22 can be increased, and the battery of the vehicle 1 can be prevented from running out.

  In the present embodiment, the in-vehicle power supply control device 10 is configured to include the five connection units 15, but is not limited thereto, and is configured to include four or less or six or more connection units 15. It may be. Moreover, the structure of the display part 12 and the operation part 13 which were shown in FIG.2 and FIG.3 is an example, Comprising: It does not restrict to this.

(Modification)
After the solar power generation unit 21 is selected as the power supply source and the power supply to the external device 30 is started, the power value generated by the solar power generation unit 21 is reduced due to the influence of weather change or the like, and the connection unit 15 May not be able to generate electric power necessary for the operation of the external device 30 connected to the. In addition, after the power storage unit 22 is selected as the power supply source and the power supply to the external device 30 is started, the amount of power stored in the power storage unit 22 gradually decreases, and sufficient power is supplied to the external device 30 connected to the connection unit 15. It may become impossible to supply power. Therefore, the in-vehicle power supply control device 10 according to the modified example, when the power value related to the selected power supply source is less than the total estimated power consumption value of the external device 30 connected to the connection unit 15, A process of sequentially stopping power supply to the connection unit 15 is performed.

  For this process, when the in-vehicle power supply control device 10 according to the modification accepts selection of the type of the external device 30 connected to the connection unit 15, to which connection unit 15 the external device 30 is connected. Is received from the user, and the correspondence information with the type of the external device 30 connected to the connection unit 15 is stored. Moreover, the vehicle-mounted power supply control apparatus 10 which concerns on a modification can connect / cut off the electric power supply path | route from the solar power generation part 21 or the electrical storage part 22 to each connection part 15 separately.

  After that, the in-vehicle power supply control device 10 according to the modified example, when the power value related to the selected power supply source is less than the total value of the estimated power consumption values of the external device 30 connected to the connection unit 15, The estimated power consumption value of each external device 30 connected to the connection unit 15 is read from the estimated power consumption value storage unit 14, and power supply is stopped in order from the connection unit 15 to which the external device 30 having a small estimated power consumption value is connected. To do.

  FIG. 7 is a flowchart illustrating a procedure of power supply stop processing performed by the in-vehicle power supply control device 10 according to the modification. The power supply control unit 11 of the in-vehicle power supply control device 10 according to the modified example detects the power value related to the selected power supply source in the power generation detection unit 16 or the power storage detection unit 17 (step S41), and supplies power. It is determined whether or not the original power value is smaller than the power consumption value (total value of estimated power consumption values) of the external device 30 connected to the connection unit 15 (step S42). When the power value related to the power supply source is larger than the power consumption value (S42: NO), the power supply control unit 11 returns the process to step S41 and repeats the above process.

  When the power value related to the power supply source is smaller than the power consumption value (S42: YES), the power supply control unit 11 calculates the estimated power consumption value of each external device 30 connected to the connection unit 15 as the estimated power consumption value storage unit. 14 (step S43). Next, the power supply control unit 11 selects one connection unit 15 to which the one external device 30 having the smallest estimated power consumption value is connected (step S44), and stops power supply to the selected connection unit 15. (Step S45). Thereafter, the power supply control unit 11 determines whether or not the power value related to the power supply source is smaller than the power consumption value of the external device 30 (step S46), and the power value related to the power supply source is smaller than the power consumption value. In that case (S46: YES), the process is returned to step S44, and the process of stopping the power supply to the connection unit 15 to which the external device 30 having a small estimated power consumption value is connected is repeatedly performed. When the power value related to the power supply source is greater than the power consumption value (S46: NO), the power supply control unit 11 ends the power supply stop process.

  After receiving the selection of the power supply source and the type selection of the external device 30, the in-vehicle power supply control device 10 according to the modified example of the above configuration has a power value related to the power supply source that is less than the total estimated power consumption value. In such a case, by setting the configuration to stop the power supply to the connection unit 15 to which the external device 30 having a small estimated power consumption value is connected, the user can use the power consumption among the plurality of external devices 30 being used. The external device 30 having a large value can be used until the end.

  In the above-described modification, the in-vehicle power supply control device 10 is configured to simply stop the power supply to the connection unit 15. However, the present invention is not limited to this, and a warning is given to the user before the power supply is stopped. It is good also as a structure to perform.

DESCRIPTION OF SYMBOLS 1 Vehicle 10 In-vehicle power supply control apparatus 11 Power supply control part (control means, calculation means, restriction means)
12 Display section (display means)
13 operation part 13a solar cell selection switch (supplier selection reception means)
13b Battery selection switch (supplier selection receiving means)
13c Confirm switch (device type selection accepting means)
13d Cancel switch (device type selection accepting means)
13e Up / down movement switch (device type selection acceptance means)
14 Estimated power consumption value storage unit (storage means)
15 connection part 16 power generation detection part (power generation detection means)
17 Power storage detection unit (power storage detection means)
21 Photovoltaic power generation unit 22 Power storage unit 30 External device

Claims (5)

In a vehicle-mounted power supply control device including a control unit that performs control related to power supply from a photovoltaic power generation unit and a power storage unit mounted on a vehicle to a plurality of connection units provided in the vehicle in order to connect an external device. ,
Power generation detection means for detecting a power value generated by the solar power generation unit;
Power storage detection means for detecting the amount of power stored in the power storage unit;
Storage means for storing the estimated power consumption value of the external device that can be connected to the connection unit in advance for each type of external device;
A supply source selection receiving means for receiving a selection of a power supply source to an external device connected to the connection unit;
Device type selection accepting means for accepting selection of the type of external device connected to the plurality of connection units;
A calculation unit that calculates a total value of estimated power consumption values of external devices connected to the plurality of connection units based on the type received by the device type selection reception unit and the estimated power consumption value stored in the storage unit When,
A vehicle-mounted power supply control device comprising: a display unit configured to display a power value related to a power supply source received by the supply source selection receiving unit and a total value of estimated power consumption values calculated by the calculation unit. . The device type selection receiving means sequentially receives selection of a plurality of types of external devices connected to the plurality of connection units,
The calculation means is configured to calculate a total value each time the device type selection reception means receives a selection,
Each time the device type selection accepting unit accepts a selection, a limiting unit that restricts subsequent selection acceptance by the device type selection accepting unit so that the total value of the estimated power consumption values does not exceed the power value related to the power supply source. The in-vehicle power supply control device according to claim 1, further comprising: The limiting means is
Calculate the remaining power value that can be consumed from the total value of the power value related to the selected power supply source and the calculated estimated power consumption value,
The device type selection accepting means restricts the acceptance of selection so that the type of external device whose estimated power consumption value stored in the storage means exceeds the remaining power value cannot be selected. The in-vehicle power supply control device according to claim 2, wherein The surplus power generated by the solar power generation unit and not consumed by an external device connected to the connection unit is stored in the power storage unit. The on-vehicle power supply control device according to claim 1. When the power value related to the selected power supply source is smaller than the total value of the calculated estimated power consumption values, the estimated power consumption value is small based on the estimated power consumption value stored in the storage means. The in-vehicle power supply control device according to any one of claims 1 to 4, wherein power supply to a connection unit to which the device is connected is stopped.

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