JP2013005522A - Usable power amount presentation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a "usable power amount presentation device" capable of appropriately determining whether or not remaining power in a battery can be utilized for economical power interchange between a home and an electric vehicle.SOLUTION: A usable power amount presentation device comprises: arrival detection means 7 for detecting arrival of an electric vehicle at a house; remaining power amount confirmation means 8 for confirming a remaining power amount of a battery 2 of the electric vehicle when the arrival is detected; current time acquisition means 10; departure time setting means 11 for setting departure time; full charge propriety determination means 12 for determining whether or not full charge of the battery 2 can be performed by utilizing inexpensive midnight power, on the basis of the departure time and the current time; and usable power amount display means 14 for displaying the confirmed remaining power amount on a display part 9 as a power amount usable for home, when an affirmative determination result is obtained by the full charge propriety determination means.

Description

  The present invention relates to an available power amount presentation device, and more particularly to an available power amount presentation device suitable for using the remaining power amount of a battery of an electric vehicle for home use.

In recent years, EVs that use electricity as an energy source (EV: Electric Vehicle) have been actively developed, unlike gasoline vehicles, which have been the mainstream in the past, from the viewpoint of suppressing the depletion of petroleum resources and reducing CO ₂ emissions. Until now, various electric vehicles have been put into practical use.

  In addition, with the development of the electric vehicle itself, the charging infrastructure for the electric vehicle is also equipped with a stand-type charger suitable for operation in public and commercial parking spaces, and walls that can be installed in houses. Attached type chargers etc. have been sold with the aim of popularization.

  In this type of electric vehicle, not only usage as a load that consumes electric power but also usage as an electric power source that supplies electricity stored in the battery (secondary battery) of the electric vehicle to other loads has been studied. Supply to home (V2H: Vehicle to Home), transmission to power grid (V2G: Vehicle to Grid) (see, for example, Patent Document 1) and supply to other electric vehicles (V2V: Vehicle to Vehicle) are proposed Has been.

Japanese translation of PCT publication 2010-512727

  In the above-described V2H, by using (discharging) the remaining power of the battery of the electric vehicle for home use (for home loads such as lighting and air conditioner), it can contribute to energy saving in the home. On the other hand, in order to run the electric vehicle again after using the remaining power for home use, it is necessary to charge the battery from the home power supply.

  Therefore, when using an electric vehicle as a household power source, a battery that can be used for economical power interchange between the electric vehicle and the home in consideration of the necessity of running the electric vehicle after use. It is important to accurately grasp the remaining power amount.

  Therefore, the present invention has been made in view of such points, and can accurately grasp the remaining amount of battery power that can be utilized for economical power interchange between the electric vehicle and the home, and thus An object of the present invention is to provide an available power amount presentation device capable of reducing the total cost of electric vehicle power and household power.

  In order to achieve the above-described object, an available power amount presenting apparatus according to the present invention is an available power amount presenting apparatus that presents a remaining power amount of a battery of an electric vehicle that can be used for home use. An arrival detection means for detecting arrival at the home, a remaining power amount confirmation means for confirming a remaining power amount of the battery of the electric vehicle triggered by the detection of the arrival by the arrival detection means, and acquiring the current time Current time acquisition means, departure time setting means for setting a departure time at which the electric vehicle should leave the house, and setting by the departure time setting means after confirmation of the remaining power amount by the remaining power amount confirmation means The battery using the late-night power with the electricity bill set to be lower than usual based on the departure time and the current time acquired by the current time acquisition means A full charge from the fully discharged state to determine whether it can be completed before the set departure time, and a positive determination result by the full charge availability determination means When the power is obtained, available power amount display means for displaying all or a part of the remaining power amount confirmed by the remaining power amount confirmation means as a power amount usable for home use on a display unit; It is characterized by having prepared.

  And according to such a structure, when the full charge of the battery using the late-night power with a cheap electricity bill is possible from the relationship between the departure time and the current time, all or a part of the remaining power amount of the battery is obtained. Since it can be displayed as the amount of power that can be used for home use, the remaining amount of battery power that can achieve both savings in electricity costs for home use (for home loads) and savings in electricity costs for battery charging Can be grasped accurately.

  The available power amount display means is regarded as necessary for the use of the electric vehicle in an emergency from the confirmed remaining power amount as a part of the remaining power amount confirmed by the remaining power amount confirmation means. You may display the electric energy which deducted predetermined electric energy as the electric energy which can be utilized for the said household.

  And according to such a structure, it becomes possible to cope quickly when the use of an electric vehicle is needed urgently after returning home.

  And a selection screen display means for displaying a selection screen on the display unit for selecting whether or not the remaining power of the battery corresponding to the amount of power displayed by the available power amount display means is used for home use. In the selection screen displayed by the selection screen display means, when it is selected that the remaining power is to be used for home use, the remaining power is sent to the home energy management system installed in the house. Use request means for requesting use may be provided.

  According to such a configuration, it becomes possible to use the remaining power of the battery for home use after confirming the user's intention.

  Furthermore, the available power amount presentation device may be mounted on an in-vehicle device.

  And according to such a structure, the electric energy which can be used for home use can be confirmed in a vehicle promptly after returning home, and it becomes possible to improve the convenience of an in-vehicle device.

  The arrival detection means may include own vehicle position detection means for detecting the position of the electric vehicle by satellite navigation and / or autonomous navigation.

  And according to such a structure, it becomes possible to utilize the existing installation of a vehicle equipment.

  Furthermore, the available power amount presentation device may be mounted on a home computer.

  And according to such a structure, it becomes possible to confirm the electric energy which can be utilized for home use at home.

  According to the present invention, it is possible to accurately grasp the remaining power amount of a battery that can be utilized for economical power interchange between an electric vehicle and a home, and consequently, the total cost of electric vehicle power and home power. Can be reduced.

The conceptual diagram which shows the power interchange system between V / H containing embodiment of the available electric energy presentation apparatus in embodiment of the available electric energy presentation apparatus which concerns on this invention. The block diagram which shows embodiment of the available electric energy presentation apparatus which concerns on this invention Screen transition diagram showing an embodiment of an available power amount presentation device according to the present invention

  Hereinafter, an embodiment of an available power amount presentation device according to the present invention will be described with reference to FIGS. 1 to 3.

  FIG. 1 is a conceptual diagram showing an available power amount presentation device 1 according to the present embodiment together with a V (Vehicle) / H (Home) power interchange system including the device. The available power amount presentation device 1 according to the present embodiment supports economical power interchange between the battery 2 of the electric vehicle and the home energy management system 3. The electric vehicle may include a vehicle that uses an energy source other than electricity, such as a plug-in hybrid electric vehicle, in addition to a pure electric vehicle that uses only electricity as an energy source. In addition, as a premise that the present invention is effectively applied, a user can use electric power (hereinafter referred to as midnight power) used in a predetermined time zone including midnight as compared with a normal rate plan. It is assumed that the user has contracted a rate plan in which the rate of electricity (referred to as electric power) is set to be low. An example of such a charge plan is “Profitable Night 8” provided by TEPCO.

  As shown in FIG. 1, the battery 2 is electrically connected to the home energy management system 3 through the charge / discharge cable 4 and the charge / discharge device 5 by human work when charging or discharging. It has come to be. Here, examples of the home energy management system 3 include a HEMS (Home Energy Management System). HEMS is a system that automatically controls home appliances and hot water supply devices connected via a network. According to such a system, the energy usage status is displayed in addition to encouraging users to save energy. Can be automatically restricted. The apparatus body of HEMS is comprised by the display operation part, I / O BOX, a control part, etc., and there exist some which were equipped with the storage battery. Such a home energy management system 3 controls the supply of electric power transmitted from the supply side (power plant) via the electric power system (electric wires, etc.) to the home load (home appliances, etc.) 6 and the battery 2. It has become.

  The available power amount presentation device 1 according to the present embodiment includes, as hardware, a CPU, a ROM that stores an execution program of the CPU, a RAM that is used for temporarily storing processing results of the CPU, a display, a wired / wireless connection, and the like. The transmission / reception module or the like may be configured, and a block diagram in which such an available power amount presentation device 1 is divided by function is as shown in FIG.

  That is, as shown in FIG. 2, the available power amount presentation device 1 has an arrival detection unit 7 as arrival detection means. This arrival detection unit 7 detects the arrival of an electric vehicle at home (user's house). In addition, the arrival detection part 7 may be provided with the well-known own vehicle position detection means mounted in the vehicle equipment (navigation apparatus). Here, as the vehicle position detection means, a positioning signal (information on orbit and time) periodically distributed from a positioning satellite (for example, a GPS satellite or a Galileo satellite) is received by a receiver, and the received positioning signal is received. Based on the satellite navigation that positions the vehicle position as absolute coordinates and the detection results of various autonomous navigation sensors (gyro sensor, vehicle speed sensor, etc.), the vehicle position is changed relative to the previous position. You may use what performs the autonomous navigation calculated as minutes. The detection of the vehicle position may be accompanied by a map matching process for matching the vehicle position measured by satellite navigation or autonomous navigation with the corresponding position on the road in the map data. In the case of including such own vehicle position detection means, the arrival detection unit 7 matches the vehicle position detected by the own vehicle position detection means with a pre-registered home position (address) or a predetermined distance. You may detect arrival at your home when you are inside. For such arrival detection, a known navigation apparatus arrival determination system may be used.

  Moreover, as shown in FIG. 2, the available electric energy presentation apparatus 1 has the remaining electric energy confirmation part 8 as a remaining electric energy confirmation means. The remaining power amount confirmation unit 8 is configured to confirm the remaining power amount of the battery 2 at the time of arrival, using the arrival detection by the arrival detection unit 7 as a trigger. At this time, the remaining power amount confirmation unit 8 may confirm the remaining power amount based on a measurement result of a battery fuel gauge (not shown) mounted on the electric vehicle. Further, the remaining power amount confirmation unit 8 may display the confirmed remaining power amount on the display unit 9. This display of the remaining power amount may be accompanied by a display of the cruising distance of the electric vehicle corresponding to the remaining power amount. In this case, the cruising range may be calculated based on the confirmed remaining power amount (kWh) and the known electric cost (km / kWh) of the electric vehicle.

  Furthermore, as shown in FIG. 2, the available power amount presentation device 1 includes a current time acquisition unit 10 as current time acquisition means, and the current time acquisition unit 10 acquires the current time. It has become. The current time acquisition unit 10 may acquire the current time based on the navigation signal described above, a time signal of a radio mounted on the vehicle-mounted device, or the like.

  Furthermore, as shown in FIG. 2, the available power amount presentation device 1 has a departure time setting unit 11 as departure time setting means. The departure time setting unit 11 sets the departure time at which the electric vehicle should leave the home. The departure time setting unit 11 may display a departure time setting operation screen on the display unit 9 and then set a departure time according to the operation result of the operation means (touch panel, remote control, etc.) for the operation screen. .

  Moreover, as shown in FIG. 2, the available electric energy presentation apparatus 1 has the full charge availability determination part 12 as a full charge availability determination means. The full charge permission / inhibition determination unit 12 determines the departure time set by the departure time setting unit 11 and the current time acquired by the current time acquisition unit 10 after the remaining power amount confirmation by the remaining power amount confirmation unit 8. Based on the above, it is determined whether or not the full charge from the fully discharged state (empty state) to the battery 2 using midnight power can be completed by the set departure time. . In this determination, a known required time required for fully charging the battery 2 and a known application time zone of midnight power are also taken into consideration.

  Further, as shown in FIG. 2, the available power amount presentation device 1 includes a usable power amount display processing unit 14 as a usable power amount display unit. The available power amount display processing unit 14 uses the remaining power amount confirmed by the remaining power amount confirmation unit 8 for home use when a positive determination result is obtained by the full charge availability determination unit 12. The amount of power that can be used is displayed on the display unit 9. On the other hand, when a negative determination result is obtained by the full charge availability determination unit 12, the available power amount display processing unit 14 can use this even if there is a remaining power amount. Are not displayed (including the display that the available power amount is 0 kWh).

  According to such a configuration, when the battery 2 can be fully charged using the late-night power with a cheaper electricity bill based on the relationship between the departure time and the current time, the remaining power amount of the battery 2 can be used for home use. Since the user can use the remaining power of the battery 2 for home use to save the electricity bill for home use, the user can charge the battery 2 at low cost by using late-night power. You can make sure that you can save on your electricity bill for charging.

  In addition to the above configuration, the available power amount presentation device 1 according to the present embodiment further includes a selection screen display processing unit 15 as selection screen display means, as shown in FIG. The selection screen display processing unit 15 displays a selection screen for selecting whether to use the remaining power of the battery 2 corresponding to the amount of power displayed by the available power amount display processing unit 14 for home use. 9 is displayed.

  Moreover, as shown in FIG. 2, the available electric energy presentation apparatus 1 has the utilization request | requirement transmission part 16 as a utilization request | requirement means. When the use request transmission unit 16 selects that the remaining power is to be used for home use on the selection screen displayed by the selection screen display processing unit 15, the use request transmission unit 16 sends the remaining power to the home energy management system 3. A request signal for requesting the use of is transmitted. On the other hand, the use request transmission unit 16 does not transmit a request signal when it is selected that the remaining power is not used for home use on the selection screen.

  On the home energy management system 3 side, charging / discharging of the battery 2 is controlled based on the request signal transmitted by the use request transmitting unit 16. For example, the home energy management system 3 grasps the application time zone and the current time of midnight power, and then controls the discharge device to discharge the remaining power of the battery 2 to discharge the remaining power to the midnight power. The power may be used preferentially (prior to the power supplied from the power system) as power for the home load 6 until the application time period starts. At this time, the home energy management system 3 may store the remaining power of the battery 2 in its own storage battery. On the other hand, the home energy management system 3 may start the full charge for the battery 2 by controlling the charging device when the application time period of midnight power starts.

  In this manner, power interchange between the electric vehicle and the home can be performed economically. Specifically, based on a gasoline vehicle traveling 500 km with 1139 L of gasoline, the full charge power amount of an electric vehicle traveling 160 km in a fully charged state is 364 L when converted to crude oil (1139 × 160/500). Become. If it is assumed that a full-charged electric vehicle travels 40 km on a weekday commute, the remaining power of the battery 2 remaining after daily commuting is 273 L when converted to crude oil (364 × (160-40) / 160). It becomes. And when all such remaining power is used up until the application period of late-night power when the electricity bill is cheaper, the remaining power (crude oil equivalent 273L) is used for air conditioner power (crude oil 111L), TV power (crude oil equivalent 44L), and lighting equipment power (crude oil 71L) can all be covered (226L). In addition, with midnight power, the cost can be reduced by nearly half or more than the charge of the normal plan.

  Note that, not limited to the above-described configuration, the available power amount display processing unit 14 subtracts a predetermined power amount that is considered necessary for the use of the electric vehicle in an emergency from the remaining power amount confirmed by the remaining power amount confirmation unit 8. The amount of power (part of the remaining power amount) may be displayed as the amount of power available for home use.

  If comprised in this way, utilization of the electric vehicle at the time of emergency can be dealt with rapidly. In this case, as the predetermined power amount, for example, a desired power amount corresponding to a concept such as a power amount required for a round trip to the nearest emergency hospital may be set by user operation or default. However, such a subtraction of the predetermined power amount may have an execution condition in relation to the current time. For example, the current time is within a predetermined time before the start of the midnight power application time zone (for example, 30 (Within minutes), the subtraction may not be performed (the remaining amount of power is displayed as the amount of power available for home use).

  Moreover, the available electric energy presentation apparatus 1 in this embodiment may be mounted on an in-vehicle device, or may be mounted on a home computer. However, when it is mounted on a home computer, it will be necessary to acquire the vehicle position information and the battery remaining amount information from the electric vehicle (on-vehicle device) side via communication.

  Next, FIG. 3 is a transition example of a screen displayed by the available power amount presentation device 1 in the present embodiment.

  First, the screen of Step 1 (ST1) in FIG. 3 is a remaining power notification screen that shows the remaining power amount of the battery 2 of the electric vehicle when the electric vehicle arrives at the home, together with the cruising distance according to this. Yes. This remaining power notification screen is displayed by the remaining power amount confirmation unit 8 triggered by arrival detection by the arrival detection unit 7.

  Next, the screen of Step 2 (ST2) is a screen that is displayed when a predetermined time elapses or a transition instruction operation to the next screen is performed after the remaining power notification screen is displayed in Step 1 (ST1). Specifically, this screen is a departure time setting screen displayed by the departure time setting unit 11, and this departure time setting screen is set by inputting the departure time using the operation means. Be able to.

  Next, the screen of Step 3 (ST3) is a screen that is displayed when the determination result of the full charge availability determination unit 12 according to the setting result on the departure time setting screen is affirmative. The power amount notification / selection screen is a combination of the power amount displayed by the amount display processing unit 14 and the selection screen displayed by the selection screen display processing unit 15. With respect to this screen, it is possible to select whether or not to use the operation means. When “use” is selected on this screen, the use request transmission unit 16 transmits a use request to the home energy management system 3, and the home energy management system 3 charges or discharges the battery 2. Control will be started.

  As described above, according to the present invention, it is possible to appropriately determine whether or not the remaining power of the battery 2 can be utilized for economical power interchange between the home and the electric vehicle. The total cost of electric power and electric vehicle power can be reduced.

  In addition, this invention is not limited to embodiment mentioned above, A various change can be made in the limit which does not impair the characteristic of this invention. For example, the available power amount presentation device 1 may notify the remaining power amount available for home use via voice. In addition, the available power amount presentation device 1 is configured when the electric vehicle is not connected to the charging / discharging device 5 at a predetermined time (for example, when the request signal is transmitted by the use request transmission unit 16). A warning message pointing out may be displayed or voiced. Alternatively, the available power amount presentation device 1 may include that the electric vehicle is connected to the charging / discharging device 5 in a condition for the full charge availability determination unit 12 to make a positive determination.

DESCRIPTION OF SYMBOLS 1 Available electric energy presentation apparatus 2 Battery 7 Arrival detection part 8 Remaining electric energy confirmation part 9 Display part 10 Current time acquisition part 11 Departure time setting part 12 Fully charged availability determination part 14 Available electric energy display process part

Claims (6)

An available power amount presentation device for presenting a remaining power amount of a battery of an electric vehicle that can be used for home use,
Arrival detection means for detecting arrival of the electric vehicle at a house;
Remaining power amount confirmation means for confirming the remaining power amount of the battery of the electric vehicle triggered by detection of the arrival by the arrival detection means,
Current time acquisition means for acquiring the current time;
Departure time setting means for setting a departure time at which the electric vehicle should leave the house;
After confirming the remaining power amount by the remaining power amount confirming means, based on the departure time set by the departure time setting means and the current time obtained by the current time obtaining means, the electricity bill is lower than normal. A full charge availability determination means for determining whether or not it is possible to complete full charge from a fully discharged state for the battery using late-night power set to be cheap before the set departure time;
When a positive determination result is obtained by the full charge availability determination unit, all or a part of the remaining power amount confirmed by the remaining power amount confirmation unit is displayed as a power amount usable for home use. An available electric energy display device comprising: an available electric energy display means for displaying on the unit. The available power amount display means is a predetermined amount regarded as necessary for use of the electric vehicle in an emergency from the confirmed remaining power amount as a part of the remaining power amount confirmed by the remaining power amount confirmation means. The available electric energy presentation device according to claim 1, wherein the electric energy obtained by subtracting the electric energy is displayed as the electric energy available for the home. A selection screen display means for displaying on the display section a selection screen for selecting whether to use the remaining power of the battery corresponding to the amount of power displayed by the available power amount display means for home use;
When it is selected that the remaining power is to be used for home use on the selection screen displayed by the selection screen display means, the remaining power is used for the home energy management system installed in the house. The utilization request | requirement means which requests | requires these. The available electric energy presentation apparatus of Claim 1 or Claim 2 characterized by the above-mentioned. It is mounted in the vehicle equipment. The available electric energy presentation apparatus of any one of Claim 1 thru | or 3 characterized by the above-mentioned. The available electric energy presentation device according to claim 4, wherein the arrival detection means includes own vehicle position detection means for detecting the position of the electric vehicle by satellite navigation and / or autonomous navigation. The apparatus for presenting available electric energy according to any one of claims 1 to 3, which is mounted on a home computer.

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