JP2013094007A - Charging system of electric automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging system of an electric automobile capable of effectively avoiding a power peak in a facility.SOLUTION: A charging system 1 for charging an electric automobile EV at a charging station 3 provided to a facility comprises: a prediction part for predicting transition of power consumption of the facility from a charging amount required for charging the electric automobile at the charging station; an option determination part for determining plural options of methods for charging the electric automobile for avoiding the power peak when a power peak occurs such that the power consumption of the facility predicted by the prediction part exceeds a target value of the power consumption; and a presentation part for presenting the options determined by the option determination part to a user of the electric automobile.

Description

  The present invention relates to a charging system for charging an electric vehicle in a chargeable facility such as a store.

  Due to recent global environmental problems, the popularization of electric vehicles is desired. In this case, it is essential to establish a charging infrastructure for electric vehicles, and as part of this, development of a system for charging electric vehicles by installing charging stations at convenience stores, supermarkets, shopping centers and other facilities such as stores and hospitals Has been done.

  At that time, an in-vehicle navigation device that can know the number of vacant chargers installed in a facility such as a store and the time required for charging without going to the store has also been developed (see, for example, Patent Document 1). .

JP 2011-164050 A

  By the way, the amount of power consumed in facilities such as stores varies greatly depending on the environment such as temperature and humidity, and depending on the time of day, an electric vehicle is charged and a power peak occurs. In general, the electricity charge is calculated from the basic charge and the electricity charge by contract with the power company. Since this basic charge is determined based on the maximum value (maximum demand) of the total power consumption of the entire facility for each predetermined demand time, power consumption exceeding the peak cut level (target value) is expected. When this is done, it is necessary to avoid the occurrence of a peak in power consumption, that is, a power peak.

  However, the navigation apparatus as described above does not consider the power consumption of the store, and there is a risk that a power peak may occur due to charging of the electric vehicle depending on the time zone.

  In addition, in order to avoid the occurrence of a power peak in the facility, if the demand control such as suppressing the charge amount per unit time to the electric vehicle is performed without the user's knowledge, the convenience is significantly impaired. There is a high possibility that the user will feel uncomfortable.

  The present invention has been made to solve the conventional technical problem, and provides an electric vehicle charging system capable of effectively avoiding the occurrence of a power peak in a facility.

  In order to solve the above problems, a charging system according to the present invention charges an electric vehicle at a charging stand installed in the facility, and the facility is charged with the amount of charge required to charge the electric vehicle at the charging stand. In order to avoid the power peak when a power peak occurs in the facility predicted by the prediction unit and the power consumption in the facility predicted by the prediction unit exceeds the target value of the power consumption An option determination unit that determines a plurality of options for the charging method of the electric vehicle and a presentation unit that presents the options determined by the option determination unit to the user of the electric vehicle.

  In the electric vehicle charging system according to the second aspect of the present invention, the option determining unit determines the priority order and the added value for the user for the plurality of options, and the presentation unit determines the priority order and the added value. Presented to the user together with the options.

  The charging system for an electric vehicle according to a third aspect of the invention is characterized in that, in the above, the option determining unit determines the priority order based on the effectiveness for avoiding the power peak and / or the convenience of the user. .

  The charging system for an electric vehicle according to a fourth aspect of the invention is characterized in that, in the second or third aspect of the invention, the option determining unit sets a higher added value as the option has a higher priority.

  A charging system for an electric vehicle according to a fifth aspect of the present invention is the charging method in which the option determining unit adjusts the amount of charge to charge the electric vehicle and the period during which the power peak occurs in the second to fourth aspects of the invention. The charging method for charging the electric vehicle while avoiding the above is included in the options, and the priority order is determined according to the length of the period during which the power peak occurs.

  The charging system for an electric vehicle of the invention of claim 6 searches for affiliate facilities that can be reached from the remaining battery level of the electric vehicle in each of the above-mentioned inventions, and when a power peak does not occur even when the electric vehicle is charged in the affiliate facilities A guidance information generation unit that generates guidance information to the affiliated facility, and the option determining unit includes a charging method for guiding the affiliated facility when the guidance information is obtained from the guidance information generating unit. Features.

  According to the present invention, in a charging system for charging an electric vehicle at a charging stand installed in a facility, prediction for predicting a transition of power consumption in the facility from a charging amount necessary for charging the electric vehicle at the charging stand. And a plurality of options for charging the electric vehicle to avoid the power peak when the power peak in the facility predicted by the prediction unit exceeds the target value of the power consumption. Since it has an option determining unit to be determined and a presentation unit for presenting the options determined by this option determining unit to the user of the electric vehicle, by allowing the user to select one of a plurality of charging methods Thus, it is possible to avoid the occurrence of a power peak in the facility without impairing the convenience of the user and without giving the user an unpleasant feeling.

  In this case, in addition to this, the option determining unit as in the invention of claim 2 determines the priority order and the added value for the user for a plurality of options, and the presentation unit uses the priority order and the added value as options. If it is also presented to the user, the priority order is determined based on the effectiveness for avoiding the power peak and / or the convenience of the user as in the invention of claim 3, for example. By making the option determination unit set higher added value for options with higher priority as in the invention, the user can select an effective charging method for avoiding power peaks and user convenience. As a result, it is possible to more smoothly avoid the occurrence of power peaks at the facility.

  Further, as in the invention of claim 5, the option determining unit selects a charging method for charging the electric vehicle by adjusting a charge amount, and a charging method for charging the electric vehicle while avoiding a period in which a power peak occurs. If the priority order is determined according to the length of the period during which the power peak occurs, the convenience of the user can be improved while avoiding the occurrence of the power peak at the facility more effectively. This can be further improved.

  Further, the affiliated facility that can be reached from the remaining battery level of the electric vehicle as in the invention of claim 6 is searched, and guidance information to the affiliated facility is obtained when no electric power peak occurs even when the electric vehicle is charged in the affiliated facility. If the option determination unit obtains the guidance information from the guidance information generation unit and includes the charging method for guiding to the affiliated facility as an option, the mobile battery remaining The amount of electric vehicles can be directed to other affiliated facilities. This makes it possible to more reliably avoid the occurrence of power peaks.

It is a schematic block diagram of the charging system of the electric vehicle of one Example to which this invention is applied. It is a figure explaining the data exchanged between the integrated controller shown in FIG. 1, and a centralized management server. It is a figure which shows the choice of the charging method which the integrated controller of FIG. 1 determines. It is a figure which shows the priority of the option which the integrated controller of FIG. 1 determines. It is a flowchart explaining operation | movement of the integrated controller of FIG. 3 is another flowchart for explaining the operation of the integrated controller in FIG. 1. It is a figure which shows the generation | occurrence | production time of the electric power peak anticipated in a store. It is a figure which similarly shows the generation | occurrence | production time of the electric power peak anticipated in a store. 6 is still another flowchart for explaining the operation of the integrated controller in FIG. 1. It is a flowchart explaining operation | movement of the centralized management server of FIG. It is a figure explaining operation | movement of an integrated controller when the option A of FIG. 3 is selected. It is a figure explaining operation | movement of an integrated controller when the choice B of FIG. 3 is selected. It is a figure explaining operation | movement of an integrated controller when the option C of FIG. 3 is selected. It is a figure explaining operation | movement of an integrated controller when the option D of FIG. 3 is selected.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following embodiments, charging stands installed in the parking lots of the stores M1 and M2 for the electric vehicles EV of users (customers) who have visited the stores (facility) M1 and M2 such as supermarkets and convenience stores. 3 is charged. Further, in the following present invention, an electric vehicle does not include an engine, and includes a storage battery and a traveling motor, and a pure electric vehicle that travels with the traveling motor by power supplied from the storage battery, as well as an engine, a traveling motor, and a storage battery. There is also a hybrid vehicle in which the storage battery is charged by the engine and is driven by the driving motor, or is driven by the combined use of the engine and the driving motor, but the storage battery can be charged from an external power source. Shall be included.

  In FIG. 1, a charging system 1 according to an embodiment includes an integrated controller (facility-side control means) 2 that is installed in a store (facility) M1 and M2 of a chain (chain) and manages all electric power in each store, A charging stand 3 as a charging means that is installed in a parking lot or the like of the store M1, M2 and charges the electric vehicle EV, a central management server (management-side control means) 4 that manages the power of all stores of the store chain, for example It is composed of And the integrated controller 2 comprises the prediction part of this invention, and the option determination part, and the centralized management server 4 comprises the guidance information generation part of this invention. The charging stand 3 constitutes a presentation unit of the present invention.

  The integrated controller 2 of each store M1, M2 exchanges data with the centralized management server 4 via the Internet. The charging stand 3 is connected to the integrated controller 2 of the store and has a charger. Each integrated controller 2 manages the operation of each device (showcase, air conditioner, lighting, charging stand 3) installed in its own store M1 or M2, and in its own store M1 or M2. Each device is managed so that the power consumption does not exceed the target value (peak cut level). The central management server 4 is installed at the headquarters of the store chain, for example, and monitors the power consumption in all the affiliated stores M1 and M2.

  The charging stand 3 is detachably connected to a display unit 6 composed of a color liquid crystal display or the like, an input unit 7 composed of a switch, and a storage battery of the electric vehicle EV as shown in an enlarged view in FIG. A connecting portion 8 is provided. When a user of the electric vehicle EV connects the connection unit 8 to his / her own electric vehicle EV, the remaining battery level of the electric vehicle EV is read by the charging stand 3 and transmitted to the integrated controller 2. Further, when the charge amount desired by the user is input from the input unit 7, this is also transmitted from the charging stand 3 to the integrated controller 2 (FIG. 2).

  In addition, although an Example demonstrates the charge amount (for example, full charge, 3/4 charge, 1/2 charge, etc.) which a user desires in the charging stand 3 from the input part 7, it does not restrict to that, The integrated controller 2 may automatically calculate the amount of charge necessary for full charge from the remaining battery power transmitted from the charging stand 3.

  The integrated controller 2 transmits the remaining battery level and the desired charge amount transmitted from the charging stand 3 to the central management server 4, and other store information (location: location information) described later as guidance information from the central management server 4. Is transmitted to the integrated controller 2. In response to this, the integrated controller 2 receives a power peak generated in its own store M1 or M2, that is, a charging method described later in order to avoid that the power consumption in the store exceeds the target value (peak cut level). Options are determined and transmitted to the charging station 3 (FIG. 2). The charging stand 3 displays the options transmitted from the integrated controller 2 and the added value described later on the display unit 6 and presents them to the user. The user selects one of the charging methods displayed on the display unit 6 and starts charging as described later, waits, or moves to another store.

  Next, FIG. 3 shows an example of a plurality of options for the charging method determined by the integrated controller 2. Option A is a quick charge that increases the amount of charge per unit time and rapidly charges the storage battery of the electric vehicle EV. Option B is an adjusted charge that charges while reducing the amount of charge per unit time. Option C is a store. Standby charging that performs quick charging after waiting for a power peak at M1 and M2, and option D is four of other store induction charging that leads to another store in the series (for example, store M2 for store M1). .

  And FIG. 4 has shown an example of the priority of each choice AD which the integrated controller 2 determines according to the battery remaining charge and electric power peak time of the electric vehicle EV. The priority order is basically determined by the integrated controller 2 based on the effectiveness for avoiding the power peak and / or the convenience of the user. Details will be described later.

  Further, in addition to giving priority to the options and displaying them on the display unit 6, the integrated controller 2 also displays the added value for the user corresponding to each option. As described above, each integrated controller 2 presents the charging method options to the user in order to avoid the occurrence of a power peak in its own store M1 or M2. Naturally, this is inconvenient for users who wish to charge. In other words, the option A is convenient for the user, but the power consumption is increased for the store, so that a power peak is likely to occur. On the other hand, in the above option B, since charging takes time, the amount of charge until the store is closed may not reach a desired value. In the case of the above option C, it is necessary to wait for the time when the power peak occurs, and the amount of charge may be less than desired. Furthermore, in the case of the option D, since it is necessary to move to another store, the integrated controller 2 gives each option an added value that is profitable to the user in return.

  For this reason, the added value has a higher value as the option with higher priority. Examples of added value are: (1): Electricity cost (yen) that can be reduced by selecting the charging method x constant ratio (calculated from the difference between the expected power peak value and the actual power consumption) Or (2): Electricity cost (yen) required when traveling a distance to another store can be considered.

  And about the height of added value, the ratio in the case of said (1) is made so high that a priority is high, or about other store induction charge D, (2) is added in addition to (1) etc. The value of the value is given by the operation of. It is possible to more effectively avoid the occurrence of a power peak by increasing the added value of an option that is inconvenient to the user (an option with a higher priority). In the case of other store inductive charging D, the store that induced the added value may be undertaken. In that case, the added value may be used anywhere in the chain store.

  Further, the added value is not limited to the cost required for charging, but may be a privilege at the time of purchasing a product at the stores M1 and M2. Furthermore, it is possible to operate at the cost obtained from the so-called negative wattage system.

  Next, the actual operation of the charging system 1 according to the embodiment will be described with reference to the flowcharts in FIG. The user arrives at the store M1, for example, with the electric vehicle EV, and connects the connecting portion 8 of the charging stand 3 to the electric vehicle EV. Then, it is assumed that a desired charge amount, for example, full charge is input using the input unit 7. When the electric vehicle EV is connected, the charging stand 3 automatically reads the remaining battery level of the storage battery of the electric vehicle EV and transmits it to the integrated controller 2 together with the input charge amount.

  The integrated controller 2 receives information on the charge amount and the remaining battery level from the charging stand 3 in step S1 of FIG. Next, when the electric vehicle EV is charged in the charging station 3 from the transition of the charge amount desired by the user received in step S2 and the power consumption amount of the store M1 monitored by the user, the entire store is It is predicted whether a power peak in which the amount of power consumption exceeds the target value will occur.

  If the amount of charge is not the amount that cracks the power peak, that is, if there is no risk that a power peak will occur even if the electric vehicle EV is charged, the integrated controller 2 proceeds to step S3 and starts charging information. Is transmitted to the charging stand 3. In response to this, the charging stand 3 charges the storage battery of the electric vehicle EV to which the connecting portion 8 is connected using a charger.

  On the other hand, when it is predicted that a power peak will occur in step S2, the integrated controller 2 proceeds to step S4 and determines whether or not there is a remaining battery level of the electric vehicle EV. And when there is no remaining battery power from the information received from the charging stand 3, that is, when the storage battery of the electric vehicle EV is completely discharged, or when there is only a little remaining power, the process proceeds to step S5 and the options Set up.

  If the remaining battery level is present in step S4, the integrated controller 2 proceeds to step S7 to perform nearest store search data acquisition control by the centralized management server 4. The operations of the integrated controller 2 and the central management server 4 performed in step S7 are shown in FIGS. That is, first, the integrated controller 2 transmits the remaining battery level and the charged amount to the central management server 4 in step S12 of FIG. When the central management server 4 receives the remaining battery level and the charge amount from the integrated controller 2 in step S16 of FIG. 10, the central management server 4 calculates the travelable distance from the remaining battery level received in step S17. Then, it is searched whether there is another affiliated store that can be guided within the travelable distance calculated from the store M1.

  If there is no other affiliated store within the travelable distance, the central management server 4 proceeds to step S19 to enter information indicating no corresponding store in the transmission data, and transmits the information to the integrated controller 2 in step S20. In this case, the above-described option D: other store induction charging is not presented.

  On the other hand, when another affiliated store (for example, M2) that can be guided within the travelable distance is searched in step S18, when the electric vehicle EV is charged at the charging station 3 of the store M2, the store (M2) It is predicted whether or not a power peak in which the total power consumption exceeds the target value will occur. If it is predicted that a power peak will occur, the centralized management server 4 proceeds to step S19 to enter information indicating no corresponding store in the transmission data, and transmits the information to the integrated controller 2 in step S20.

  When it is predicted in step S21 in FIG. 10 that no power peak will occur, the central management server 4 proceeds to step S22 to enter the location information (location) of the corresponding store M2 in the transmission data, and in step S20, the integrated controller 2 Send the information. When there are a plurality of other affiliated stores within the travelable distance, all stores may be targeted, or only the nearest store from the store M1 may be targeted. In the present embodiment, for the sake of convenience, the case of guiding to the nearest store M2 within the travelable distance has been described. However, the present invention is not limited to this, and the user is allowed to select from a plurality of stores within the travelable distance. Anyway.

  On the other hand, the integrated controller 2 of the store M1 is waiting for the reception of the data of the search result of the other stores from the central management server 4. If received, the integrated controller 2 determines whether or not another store that can be guided is searched in step S13. If there is no store (step S19), the process proceeds to step S14, and D: Information on inductive store charging is not included in the options.

  On the other hand, when the other store M2 that can be guided can be searched (step S22), the process proceeds to step S15 to set D: other store induction charge at the highest priority (actually, in step S5 in FIG. 5). .

  Next, the option setting operation in step S5 of FIG. 5 will be described. As described above, when the electric vehicle EV has a remaining battery level and can be guided to another store, the integrated controller 2 includes D: other store inductive charging as an option, and the priority is the highest. (First and second rows from the left in FIG. 4).

  Next, the length of the predicted power peak time is determined. That is, the integrated controller 2 determines whether or not a power peak occurs for a long time in step S8 of FIG. As shown in FIG. 7, when the time during which the power peak in which the power consumption exceeds the target value occurs is long in the demand time period (each bar graph) (when it is longer than the predetermined time), the integrated controller 2 proceeds to step S11 in FIG. Option B, which is one of the charging method options: Adjustment charging for charging while adjusting the amount of charge per unit time to be reduced, Option C: Rapid charging after waiting while a power peak occurs at a store Set higher than standby charging.

  If the time during which the power peak occurs is long, Option C will cause the user to wait for a long time and the convenience will be significantly reduced. And This ensures the convenience of the user.

  On the other hand, when the time when the power peak occurs is short as shown in FIG. 8 (when it is less than the predetermined time), the integrated controller 2 proceeds to step S9 in FIG. 6 to select one of the charging method options C: Store After waiting while the power peak is occurring in step B, standby charging for performing quick charging is set higher than B: adjustment charging for performing charging while adjusting the amount of charge per unit time to be small.

  If the time during which the power peak occurs is short, it is more convenient for the user to wait for that time and then quickly charge. Therefore, after waiting while the power peak is occurring, the option C for performing rapid charging is set as the next priority of the highest option D. This ensures the convenience of the user.

  Next, the integrated controller 2 allocates the added value for the user described above in step S10 to each option. In this case, as described above, the added value has a higher value as the option with higher priority. Finally, option A: quick charge is set at the lowest priority.

  After the integrated controller 2 sets a plurality of options for the charging method in this way, the integrated controller 2 transmits information on the options to the charging stand 3 in step S6 of FIG. The charging stand 3 displays the received options on the display unit 6 based on the priority order, and also displays the added value on the display unit 6 corresponding to each option. At that time, for example, the display unit 6 may display a reason indicating “working on energy saving” and ask the user for cooperation.

  FIG. 4 shows the priority order of options set in this way and presented to the user on the display unit 6. That is, when there is a remaining battery level of the electric vehicle EV, and when the expected generation time of the power peak is long, the first priority is the option D, the second is the option B, the third is the option C, and the fourth is When the power peak generation time is short, the first priority is the option D, the second is the option C, the third is the option B, and the fourth is the option A. In addition, when there is no remaining battery power, and when the expected power peak generation time is long, the first priority is option B, the second is option C, and the third is option A. If it is short, the first priority is option C, the second is option B, and the third is option A.

  The user selects a charging method by looking at the choices displayed with priority on the display unit 6 of the charging stand 3 and the added value for them. FIG. 11 shows a case where option A: quick charging is selected. When the option A with the lowest priority is selected by the user, it is considered that a power peak occurs. Therefore, the integrated controller 2 controls the power consumption of the equipment installed in the store M1, and sets the target power consumption. Execute demand control that suppresses below the value. In the example of this figure, the air conditioning set temperature of the store M1 is raised to + 28 ° C., for example. Thereby, generation | occurrence | production of the electric power peak in the store M1 is avoided.

  When the option B is selected by the user, the integrated controller 2 adjusts (suppresses) the charge amount per unit time of the electric vehicle EV by the charging stand 3 to avoid the occurrence of a power peak in the store M1.

  When the option C is selected by the user, the integrated controller 2 avoids the expected power peak generation time period and waits for charging until the time period elapses. Then, after the time zone in which the power peak is expected to occur, the electric vehicle EV is quickly charged by the charging stand 3 to avoid the power peak in the store M1.

  When the option D is selected by the user and guided to another store, the maximum added value is provided to the user. This added value has been described above, and in this example, a coupon of 200 yen discount (can be used for product purchase and charging at a store) is shown.

  It should be noted that the charging of the electric vehicle in the above embodiment includes both charging at a store for a charge and charging free of charge, that is, charging for a service to a customer at the store. In the embodiment, the presentation of the charging method in the store has been described. However, the present invention is not limited thereto, and the present invention is effective even in a charged charging facility having only a charging station.

  Further, the options and added values of the illustrated charging method are not limited to these, and it goes without saying that various settings can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Charging system 2 Integrated controller 3 Charging stand 4 Centralized management server 6 Display part 7 Input part 8 Connection part EV Electric vehicle M1, M2 Store

Claims (6)

A charging system for charging an electric vehicle at a charging stand installed in a facility,
A predicting unit that predicts the transition of the power consumption in the facility from the amount of charge required to charge the electric vehicle at the charging station;
When a power peak in the facility predicted by the prediction unit exceeds a target value of the power consumption, a plurality of options for charging the electric vehicle to avoid the power peak are determined. An option determination unit to
A charging system for an electric vehicle, comprising: a presentation unit that presents the option determined by the option determination unit to a user of the electric vehicle. The option determining unit determines priority and added value for the user for the plurality of options,
The electric vehicle charging system according to claim 1, wherein the presenting unit presents the priority and added value to the user together with the options.   The electric vehicle charging system according to claim 2, wherein the option determination unit determines the priority based on effectiveness for avoiding the power peak and / or convenience of the user. .   4. The electric vehicle charging system according to claim 2, wherein the option determination unit sets the higher added value as the option has a higher priority. 5.   The option determining unit includes a charging method for charging the electric vehicle by adjusting a charge amount, and a charging method for charging the electric vehicle while avoiding a period in which the power peak occurs, 5. The electric vehicle charging system according to claim 2, wherein the priority order is determined in accordance with a length of a period in which the power peak occurs. Retrieval information generation that searches for affiliate facilities that are reachable from the battery level of the electric vehicle and generates guidance information to the affiliate facilities when the electric power peak does not occur even when the electric vehicle is charged in the affiliate facility Part
6. The method according to claim 1, wherein the option determination unit includes a charging method that guides the affiliated facility when the guidance information is obtained from the guidance information generation unit. An electric vehicle charging system according to claim 1.

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