JP2013101752A - Charging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a charging system which promotes the use of a store by the user effectively.SOLUTION: A charging system 1 includes a charging power supply section 11 for supplying power to a battery in an electric vehicle E and charging the battery, a product sales management section 17 for managing the products sold in the store provided with the charging system 1, and a control section 15 for calculating the charging fee charged to the user of the electric vehicle E. The control section 15 calculates the charging fee according to the amount of products purchased by the user of the electric vehicle E in the store. The control section 15 calculates the charging fee so that the higher the amount of products purchased by the user, the cheaper the charging fee.

Description

  The present invention relates to a charging system for charging a battery provided in an electric vehicle.

  In recent years, the capacity of a battery has been increased, and it has been increasingly used for applications such as driving electric vehicles such as electric automobiles and electric motorcycles. The battery of such an electric vehicle is charged at each home of the user of the electric vehicle (hereinafter simply referred to as “user”), or charging equipment that sells electric power for charging that is expected to become popular in the future. Or be charged.

  If electric vehicles become widespread, carbon dioxide emissions can be reduced. However, in order to spread electric vehicles, it is indispensable to spread charging facilities that can be charged outside the home as described above. Therefore, the delay in the spread of the charging facility can hinder the spread of the electric vehicle.

  Thus, for example, Patent Document 1 proposes a charging system in which a charging point is generated according to the user's personal information and the parking environment of the electric vehicle, and the user charges the battery of the electric vehicle according to the charging point.

  Further, for example, in Patent Document 2, charging is performed using not only power supplied from an electric power company but also power generated by a solar cell, and a charging method with the lowest charge is automatically selected and executed. A charging system has been proposed.

JP 2009-183135 A JP 2009-148121 A

  In a store provided with the charging system proposed in Patent Document 1, it is expected that the usage rate of the store is improved by giving a charging point to the user. That is, since it is expected that both the user and the store will benefit, such a charging system may also be widely used. However, in this charging system, the charging time and the amount of power that can be charged are determined by the charging point. For this reason, excessive or insufficient charging points may occur with respect to the amount of power required by the user, which may be inconvenient for the user.

  Furthermore, when the user uses the charging point immediately, the user cannot move from the store at least during the charging time corresponding to the charging point since the charging point was acquired. That is, it is difficult for the user to immediately use the charging points given at the store. For this reason, the user is forced to use the charging point at a later date, and it becomes difficult to realize that the user has gained profits. Therefore, the usage rate of the store may not be sufficiently improved. Moreover, if the user uses the charging point immediately and the charging time per electric vehicle (that is, the parking time) becomes long, the utilization factor of the store is reduced.

  Thus, in the conventional charging system, since there is a disadvantage for both the user and the store, there is a possibility that it will not be sufficiently spread. In other words, there is a possibility that electric vehicles will not be widely used, and hence the amount of carbon dioxide emissions may not be reduced.

  Note that the charging system proposed in Patent Document 2 can use the power generated by the solar cell, and therefore can achieve a certain effect on the reduction of carbon dioxide emissions. However, the effect obtained is very small compared to the widespread use of charging systems and electric vehicles.

  Then, an object of this invention is to provide the charging system which accelerates | stimulates effectively the use of the store by a user. It is another object of the present invention to reduce carbon dioxide emissions by promoting the popularization of electric vehicles through the spread of the charging system.

  In order to achieve the above object, a charging system according to the present invention is a charging system for charging a battery provided in an electric vehicle, and includes a charging power supply unit that supplies power to the battery for charging, and the charging system. A contribution degree recording unit that records a contribution degree of a user of the electric vehicle to the store, and a control unit that calculates a charging fee according to the contribution degree acquired from the contribution degree recording unit. .

  In the following embodiments, a product sales management unit is described as an example of the contribution recording unit.

  Further, in the charging system having the above-described configuration, the contribution recording unit records an amount of a product purchased by a user of the electric vehicle at the store, and the control unit increases a charging fee as the amount increases. You can also make it cheaper.

  If comprised in this way, since the purchasing motivation of the user of an electric vehicle is stimulated, it can anticipate that the sales of a store improve. Therefore, the charging system of the present invention can be easily adopted in a store. Therefore, it becomes possible to promote the spread of the charging system.

  Further, in the charging system having the above configuration, a power storage unit that charges supplied power and supplies power by discharging, and power supplied from a plurality of power sources including the power storage unit is selectively supplied as the charging power. A power supply switching unit to be supplied to the unit.

  If comprised in this way, it will become possible to use properly the electric power used for charge of the battery of an electric vehicle according to a situation. In addition, by charging the power storage unit with power having strict supply conditions, such as power with a limited supply time, the power can be easily applied to the battery of the electric vehicle at any time.

  In the charging system configured as described above, when the power storage unit supplies power to other than the charging power supply unit, the supply power switching unit supplies power supplied from a power source other than the power storage unit. It may be supplied to the charging power supply unit.

  If comprised in this way, when it is anticipated that supply of the electric power by an electrical storage part will become unstable, it will become possible to charge the battery of an electric vehicle using the electric power supplied from another electric power source. Therefore, it becomes possible to charge the battery of the electric vehicle stably and quickly.

  Further, in the charging system having the above configuration, when the amount of power charged in the power storage unit is smaller than a predetermined amount, the supply power switching unit charges power supplied from a power source other than the power storage unit. It may be supplied to the power supply unit.

  If comprised in this way, when it is anticipated that supply of the electric power by an electrical storage part will become unstable, it will become possible to charge the battery of an electric vehicle using the electric power supplied from another electric power source. Therefore, it becomes possible to charge the battery of the electric vehicle stably and quickly.

  In the charging system having the above configuration, when the supply power switching unit supplies power supplied from a power source other than the power storage unit to the charging power supply unit, power purchased from an electric power company is supplied to the charging power supply. It may be supplied to the unit.

  If comprised in this way, it will become possible to charge the battery of an electric vehicle further stably and rapidly.

  In the charging system configured as described above, at least one of power generated by solar power generation and power purchased from an electric power company during a time zone where the power unit price is low may be charged in the power storage unit. Absent.

  If comprised in this way, it will become possible to charge an electrical storage part with the low electric power charge and the electric power with little discharge | emission amount of a carbon dioxide. Therefore, it is possible to reduce the cost and the amount of carbon dioxide emission when charging the battery of the electric vehicle.

  If it is the structure of this invention, a charge charge will be calculated according to the contribution with respect to the store of the user of an electric vehicle. Therefore, the user can freely determine the charging time and the amount of power to be charged. In addition, the degree of contribution of the electric vehicle user to the store is immediately reflected in the charge. Therefore, it is easy for the user to realize that he / she is profitable, and the use rate of the store can be expected to improve. Furthermore, since it is suppressed that charging time becomes long, it becomes possible to suppress that the utilization factor of a shop falls.

  Moreover, since the charging system of the present invention effectively promotes the use of the store by the user of the electric vehicle as described above, it can be expected to spread. Then, by spreading the charging system, it is possible to promote the spread of electric vehicles and to reduce the amount of carbon dioxide emission.

  The significance or effect of the present invention will be further clarified by the following description of embodiments. However, the following embodiment is merely one of the embodiments of the present invention, and the meaning of the terminology of the present invention or each constituent element is limited to those described in the following embodiments. is not.

These are block diagrams which show the structural example of the charging system which is one Embodiment of this invention. These are the flowcharts which show the example of control in the case of charging an electrical storage part with the electric power produced | generated by the solar power generation part. These are the flowcharts which show the example of control in the case of charging an electrical storage part with purchased electric power. These are the flowcharts which show the example of control in the case of charging the battery of an electric vehicle. These are tables which show an example of the calculation method of a charge charge.

  A charging system according to an embodiment of the present invention will be described below with reference to the drawings. First, an example of the overall configuration and operation of a charging system according to an embodiment of the present invention will be described with reference to the drawings.

<Overall configuration and overall operation>
FIG. 1 is a block diagram illustrating a configuration example of a charging system according to an embodiment of the present invention. In addition, the solid line arrow which connects each block in a figure shows exchange of electric power, and the broken line arrow has shown exchange of information.

  A charging system 1 shown in FIG. 1 includes a charging power supply unit 11 that supplies and charges power to a battery provided in the electric vehicle E, an operation unit 12 that inputs a user instruction to the charging power supply unit 11, and charging power. A power supply switching unit 13 that switches power supplied to the supply unit 11, a power storage unit 14 that charges or supplies power to be supplied, a control unit 15 that controls the operation of each unit, and a control unit 15 for notifying the user by the control of 15, the product sales management unit 17 for managing the products sold in the store equipped with the charging system 1 and communicating with the control unit 15, and generating power by solar power generation And a solar power generation unit 18.

  The charging power supply unit 11 can acquire the power supplied from the supply power switching unit 13 by connecting the plug 11P to the outlet 13C of the supply power switching unit 13. For example, the outlet 13C is disposed in a parking lot of a store where the charging system 1 is provided, and the power supply switching unit 13 is disposed in a store near the outlet 13C.

  Further, the charging power supply unit 11 converts and supplies the power supplied from the supply power switching unit 13 so as to be suitable for charging the battery of the electric vehicle E. The charging power supply unit 11 and the battery of the electric vehicle E are electrically connected as required by the user, for example, by a cable or the like.

  The operation unit 12 is operated by a user to output an instruction to start charging the battery of the electric vehicle E to the charging power supply unit 11. Note that the operation unit 12 may output not only an instruction to start charging but also an instruction to end charging. Further, the operation unit 12 may be arranged in the vicinity of the charging power supply unit 11 or may be configured to be integrated with the charging power supply unit 11.

  When the charging power supply unit 11 receives an instruction to start charging from the operation unit 12, the charging power supply unit 11 starts charging the battery of the electric vehicle E. The charging power supply unit 11 outputs information related to charging to the control unit 15. For example, there are information indicating the start of charging, information indicating the end of charging, information indicating the amount of power charged, information identifying the charging power supply unit 11, and the like. In addition, you may output the information etc. which show charge progress (for example, the charge rate of the battery of the electric vehicle E, etc.). Further, when only one charging power supply unit 11 is provided, information for identifying the charging power supply unit 11 may not be output.

  The supply power switching unit 13 is supplied with purchased power purchased from an electric power company and power discharged from the power storage unit 14. The supplied power switching unit 13 selectively supplies various types of supplied power to the charging power supply unit 11. The switching control of the supply power switching unit 13 is performed by the control unit 15 (details will be described later). Further, not only purchased power and power discharged from the power storage unit 14 but also power generated by the solar power generation unit 18 may be supplied to the charging power supply unit 11 via the supply power switching unit 13. .

  The power storage unit 14 is configured by, for example, a large-capacity battery, and is charged by supplying purchased power or power generated by the solar power generation unit 18. The power storage unit 14 supplies power to the supply power switching unit 13 and the load unit R by discharging. In addition, control of charging / discharging of the electrical storage part 14 is performed by the control part 15 (it mentions later for details).

  The solar power generation unit 18 generates power by solar power generation, supplies the power to the power storage unit 14 and the load unit R, and sells (sells power) to an electric power company. In addition, control of the supply destination of the electric power generated by the solar power generation unit 18 is performed by the control unit 15 (details will be described later).

  The notification unit 16 is configured by, for example, an image display device provided in a store, and notifies the user that the charging of the battery of the electric vehicle E has been completed. In addition, for example, it is configured by a transmission device that notifies the user by transmitting information to a previously registered terminal such as a user's mobile phone. Note that the notification unit 16 may notify the user of the charging progress.

  The merchandise sales management unit 17 is configured by, for example, a POS (point of sale system), and records information (for example, amount) of merchandise purchased by the user. In addition, information on the product purchased by the user is notified in response to a request from the control unit 15.

  The control unit 15 receives information indicating the end of charging from the charging power supply unit 11 and operates the notification unit 16 to notify the user of the end of charging. In addition, the control unit 15 acquires information on the product purchased by the user from the product sales management unit 17 and calculates a charging fee charged to the user (details will be described later).

  The load unit R consumes electric power in a store equipped with the charging system 1 such as an air conditioner or a refrigerator. The load unit R operates by being supplied with purchased power, power discharged from the power storage unit 14, and power generated by the solar power generation unit 18.

  The charging system 1 shown in FIG. 1 has been described as a configuration in which power is directly supplied from the purchased power, the power storage unit 14 and the solar power generation unit 18 to the load unit R. A power distribution unit that distributes power may be provided. Furthermore, although the charging system 1 illustrated in FIG. 1 has been described as a configuration in which power is directly supplied from the purchased power and the solar power generation unit 18 to the power storage unit 14, the power distribution unit supplies power to the power storage unit 14. It does not matter as a configuration to supply. Further, the supply power switching unit 13 and the power distribution unit may be integrated.

<Charge control of power storage unit>
Next, an example of charging control of the power storage unit 14 will be described with reference to the drawings. FIG. 2 is a flowchart illustrating a control example in the case where the power storage unit is charged with electric power generated by the solar power generation unit. FIG. 3 is a flowchart illustrating an example of control when the power storage unit is charged with purchased power.

  As shown in FIG. 2, when charging the power storage unit 14 with the power generated by the solar power generation unit 18, the control unit 15 first checks whether or not surplus power is generated in the solar power generation unit 18. (STEP 11). The surplus power is, for example, the power generated by the solar power generation unit 18 excluding the power required by the load unit R. The electric power required in the load unit R may be all electric power required in the load unit R, and is assigned to be supplied to the load unit R by the solar power generation unit 18. Electric power may be used.

  When surplus power is not generated (STEP 11, NO), the control unit 15 continues monitoring whether surplus power is generated. On the other hand, when surplus power is generated (STEP 11, YES), the control unit 15 confirms whether or not it is set to sell power (STEP 12). When it is set to sell power (STEP 12, YES), the process returns to STEP 11, and the control unit 15 continues to monitor the presence / absence of surplus power generation and the power sale setting.

  On the other hand, when it is not set to sell power (STEP 12, NO), the control unit 15 controls to charge the power storage unit 14 with surplus power (STEP 13). And the control part 15 confirms completion | finish of charge within predetermined time (STEP14, YES), and the charge of the electrical storage part 14 is complete | finished. On the other hand, if the control part 15 does not confirm completion | finish of charge within predetermined time, it will return to STEP13 and will continue charge.

  The case where the charging ends in STEP 14 is, for example, when the amount of power charged in the power storage unit 14 exceeds a predetermined level (when fully charged) or when surplus power is no longer generated. When the setting is changed so as to sell power, the administrator of the charging system 1 (hereinafter simply referred to as “manager”) or the like instructs to stop the charging of the power storage unit 14. When charging is terminated for a predetermined reason (for example, when surplus power is no longer generated or the setting is changed to sell power), the process returns to STEP 11 and the control unit 15 determines whether surplus power is generated and It is also possible to monitor the setting.

  As shown in FIG. 3, when charging the power storage unit 14 with the purchased power, the control unit 15 first confirms whether or not it is the designated time zone (STEP 21). The designated time zone is, for example, a time zone for charging / discharging the power storage unit 14 set by an administrator or a predetermined program, and is a time zone designated to charge the power storage unit 14 with purchased power. . In particular, it is preferable that a designated time zone is a time zone (for example, nighttime) in which power bills are cheap and power with a small amount of carbon dioxide emission can be purchased.

  When it is not the designated time zone (STEP 21, NO), the control unit 15 continues monitoring whether or not it is the designated time zone. On the other hand, when it is a designated time zone (STEP21, YES), the control unit 15 controls to charge the power storage unit 14 with purchased power (STEP22). And the control part 15 confirms completion | finish of charge within predetermined time (STEP23, YES), and the charge of the electrical storage part 14 is complete | finished. On the other hand, if the control part 15 does not confirm the completion | finish of charge within predetermined time, it will return to STEP22 and will continue charge.

  The case where the charging ends in STEP 23 is, for example, the case where the amount of power charged in the power storage unit 14 exceeds a predetermined level (when fully charged), or when it is no longer in the designated time zone. This is the case when an administrator or the like gives an instruction to stop charging. When charging is terminated for a predetermined reason (for example, it is no longer in the designated time zone), it is possible to return to STEP 21 and monitor whether or not the control unit 15 is in the designated time zone.

  The control shown in FIGS. 2 and 3 may be performed when the amount of power charged in the power storage unit 14 becomes smaller than a predetermined amount.

<Battery charging control for electric vehicles>
Next, a control example of charging the battery of the electric vehicle E will be described with reference to the drawings. FIG. 4 is a flowchart showing an example of control when charging the battery of the electric vehicle.

  As shown in FIG. 4, when charging the battery of the electric vehicle E, first, the control unit 15 confirms whether or not information indicating the start of charging is input from the charging power supply unit 11 (STEP 31). The control unit 15 continues this confirmation until information indicating the start of charging is input from the charging power supply unit 11 (STEP 31, NO).

  When the control unit 15 confirms that information indicating the start of charging is input from the charging power supply unit 11 (STEP 31, YES), the amount of power charged in the power storage unit 14 is charged to the battery of the electric vehicle E. (STEP 32). For example, it is confirmed whether or not the amount of power charged in the power storage unit 14 is greater than or equal to a predetermined magnitude. Moreover, the control part 15 confirms whether the electrical storage part 14 is supplying electric power to the load part R (STEP33).

  Furthermore, the control unit 15 acquires not only information indicating the start of charging but also information for identifying the charging power supply unit 11 that starts charging, and grasps which charging power supply unit 11 starts charging. .

  The control unit 15 confirms that the amount of power charged in the power storage unit 14 remains (STEP 32, YES) and that the power storage unit 14 does not supply power to the load unit R (STEP 33, NO). Then, the setting of the supply power switching unit 13 is confirmed (STEP 34). When the control unit 15 confirms that the power supply switching unit 13 is not set to supply the power supplied from the power storage unit 14 to the charging power supply unit 11 (STEP 34, NO), the control unit 15 supplies the power from the power storage unit 14. The supply power switching unit 11 is switched so that the power to be supplied is supplied to the charging power supply unit 11 (STEP 35).

  The control unit 15 confirms that the supply power switching unit 13 is set so that the power supplied from the power storage unit 14 is supplied to the charging power supply unit 11 (STEP 34, YES), or the control unit in STEP 35 The battery 15 of the electric vehicle E is charged by the electric power supplied from the power storage unit 14 by switching the power supply switching unit 11 (STEP 36). Moreover, the control part 15 confirms whether the information which shows that charge was complete | finished from the charging power supply part 11 within predetermined time is input (STEP37).

  When the control unit 15 confirms that charging of the battery of the electric vehicle E has been completed within a predetermined time (STEP 37, YES), the control unit 15 controls the notification unit 16 to notify the user in the store that charging has ended, for example. And exit. On the other hand, when the control unit 15 does not confirm that the charging of the battery of the electric vehicle E is completed within a predetermined time (STEP 37, NO), the control unit 15 returns to STEP 32 and confirms the state of the power storage unit 14.

  The case where the charging is terminated in STEP 37 is, for example, when the amount of power charged in the battery of the electric vehicle E exceeds a predetermined level (when fully charged), or the amount of power specified by the user Or when the charging time is reached, or when the user instructs to stop charging.

  By the way, the control unit 15 indicates that there is not enough remaining amount of power charged in the power storage unit 14 (STEP 32, NO), or that the power storage unit 14 supplies power to the load unit R (STEP 33, YES). If the battery of the electric vehicle E is charged with electric power supplied from the power storage unit 14, the charging may become unstable. Therefore, the control unit 15 performs control to charge the battery of the electric vehicle E with purchased power.

  First, the control unit 15 confirms the setting of the supply power switching unit 13 (STEP 39). When the control unit 15 confirms that the supply power switching unit 13 is not set to supply the purchased power to the charging power supply unit 11 (STEP 39, NO), the purchased power is supplied to the charging power supply unit 11. Thus, the power supply switching unit 11 is switched (STEP 40).

  The control unit 15 confirms that the supply power switching unit 13 is set so that the purchased power is supplied to the charging power supply unit 11 (STEP 39, YES), or the supply power switching unit 11 is switched in STEP 40. Thus, the battery of the electric vehicle E is charged with the purchased power (STEP 41). Moreover, the control part 15 confirms whether the information which shows that charge was complete | finished from the charging power supply part 11 within predetermined time is input (STEP42).

  When the control unit 15 confirms that the charging of the battery of the electric vehicle E is completed within a predetermined time (STEP 42, YES), the control unit 15 controls the notification unit 16 to notify the user in the store that the charging is completed, for example. And exit. On the other hand, when the controller 15 does not confirm that the charging of the battery of the electric vehicle E is completed within a predetermined time (STEP 42, NO), the process returns to STEP 41 and the charging of the battery of the electric vehicle E is continued.

  If comprised as mentioned above, it will become possible to charge the battery of the electric vehicle E using not only purchased electric power but the electric power supplied from the electrical storage part 14. FIG. Therefore, for example, by charging the power storage unit 14 with strict power supply conditions such as power that can be supplied for a limited time, the power can be easily applied to the battery of the electric vehicle E at any time. .

  In addition, the power storage unit 14 has a lower power rate than the daytime purchased power, such as the power generated by the solar power generation unit 18 and the purchased power in a time zone where the power unit price is low (for example, a night time zone). , It can charge power with less carbon dioxide emissions. Therefore, it is possible to reduce the cost and the amount of carbon dioxide emissions when charging the battery of the electric vehicle E.

  Moreover, it becomes possible to switch the electric power supplied to the electric power supply part 11 for a charge according to a condition by providing the supply electric power switching part 13. FIG. In particular, when the power supply of the power storage unit 14 is expected to be unstable, the battery of the electric vehicle E can be charged with the purchased power. As a result, it is possible to reduce costs and carbon dioxide emissions as described above, and to charge the battery of the electric vehicle E stably and quickly.

  In STEP 37 or STEP 42 of FIG. 4, for example, when the user ends the charging by operating the operation unit 12, the charging may be ended without notifying the user of STEP 38. Further, when the charging is not terminated in STEP 42 of FIG. 4, the charging is continued as it is. However, the state of the power storage unit 14 may be confirmed by returning to STEP 32.

  Further, the power supply switching unit 13 may individually switch the power supplied to each of the plurality of charging power supply units 11. Furthermore, in STEP 33 of FIG. 4, whether the control unit 15 not only confirms that the power storage unit 14 supplies power to the load unit R but also already supplies power to another charging power supply unit 11. It is also possible to confirm whether or not.

<Calculation of charging charge>
An example of a charging charge calculation method for the battery of the electric vehicle E charged as in the above example will be described with reference to the drawings. FIG. 5 is a table showing an example of a charging fee calculation method.

  The values shown in FIG. 5 are merely examples, and the charging fee may be calculated based on any value. However, the control unit 15 calculates a charging fee according to the contribution degree of the user to the store. Specifically, for example, as shown in FIG. 5, the charging fee (for example, the unit price of the charging fee) is changed according to the amount (for example, the total amount) of the product purchased by the user at the store. In particular, the higher the purchase price of a product, the lower the charge. It can also be interpreted that the lower the purchase price of a product, the higher the charging fee.

  The control unit 15 can recognize the amount paid by the user to the store (for example, the total payment amount on the day) by communicating with the product sales management unit 17. At this time, the merchandise sales management unit 17 and the control unit 15 need to identify and process the user, but the user may be identified by any method. For example, the user may be identified by a payment means such as an IC card or a credit card used by the user when purchasing the product or an identification card. Further, for example, the identification number of the charging power supply unit 11 used by the user (or the identification number of the electric vehicle E acquired by the control unit 15 and the merchandise sales management unit 17 via the charging power supply unit 11) is used by the user. May be directly communicated to the store clerk, and the store clerk may input the product sales management unit 17 via a cash register or the like to identify the user.

  The control unit 15 calculates the charging fee as described above by confirming the information indicating the end of charging output from the charging power supply unit 11 and the information indicating the amount of charged power. Moreover, the control part 15 can also calculate a charge charge again, when a user purchases goods after calculation of a charge charge. The control unit 15 can also calculate the charging fee when the user tries to settle the charging fee.

  The user confirms that the charging is finished by notifying the notifying unit 16 and pays the charging fee calculated as described above. For example, the user can pay a charging fee at the same time as purchasing a product. In this case, it is preferable that the control unit 15 calculates the charging fee in consideration of the amount of goods purchased at the same time as the payment of the charging fee. In addition, for example, it is possible to pay the charging fee via an automatic payment machine or the like, and it is also possible to automatically pay using a credit card withdrawal.

  If comprised as mentioned above, a charge will be calculated according to the contribution degree with respect to a user's store. Therefore, the user can freely determine the charging time and the amount of power to be charged. Further, the user's contribution to the store is immediately reflected in the charge. Therefore, it is easy for the user to realize that he / she is profitable, and the use rate of the store can be expected to improve. Furthermore, since it is suppressed that charging time becomes long, it becomes possible to suppress that the utilization factor of a shop falls.

  Moreover, since the charging system 1 effectively promotes the use of the store by the user as described above, it can be expected to spread. Then, by spreading the charging system 1, it is possible to promote the spread of electric vehicles and to reduce the amount of carbon dioxide emission.

  In particular, the control unit 15 reduces the charging fee as the amount of the product purchased by the user from the store increases. Thereby, since the user's willingness to purchase is stimulated, it can be expected that the sales of the store will be improved. Therefore, the charging system 1 can be easily adopted at a store. Therefore, it becomes possible to further promote the spread of the charging system 1.

  When the user wants to pay the charging fee when the battery of the electric vehicle E has not been charged, the control unit 15 controls the charging power supply unit 11 with an instruction from a store clerk or a charging fee payment machine. The charging may be terminated. Thereby, since the charge fee is fixed, the user can pay the charge fee.

  Moreover, although the case where the charge charge was calculated according to the amount of the product paid by the user at the store was illustrated for the concrete description, the calculation method of the charge charge is not limited to this. For example, the charging fee may be calculated according to the amount paid by the user for the service, or the charging fee may be calculated according to the user's free behavior (for example, a questionnaire response). Further, the charging fee may be calculated according to the composite user contribution.

<Modification>
In the charging system 1 according to the embodiment of the present invention, a control device such as a microcomputer may perform part or all of the operations of the control unit 15 and the product sales management unit 17. Further, all or part of the functions realized by such a control device is described as a program, and the program is executed on a program execution device (for example, a computer) to realize all or part of the functions. It doesn't matter if you do.

  The charging system 1 shown in FIG. 1 is not limited to the case described above, and can be realized by hardware or a combination of hardware and software. Moreover, when comprising a part of charging system using software, the block about the site | part implement | achieved by software shall represent the functional block of the site | part.

  As mentioned above, although embodiment in this invention was described, the range of this invention is not limited to this, It can add and implement various changes in the range which does not deviate from the main point of invention.

  The present invention can be used in a charging system for charging a battery provided in an electric vehicle.

DESCRIPTION OF SYMBOLS 1 Charging system 11 Charging power supply part 11P Plug 12 Operation part 13 Supply power switching part 13C Outlet 14 Power storage part 15 Control part 16 Notification part 17 Merchandise sales management part 18 Solar power generation part E Electric vehicle R Load part

Claims (6)

In a charging system for charging a battery provided in an electric vehicle,
A charging power supply unit for supplying power to the battery for charging;
A contribution recording unit that records the contribution of the user of the electric vehicle to a store provided with the charging system;
A control unit that calculates a charge according to the contribution obtained from the contribution recording unit;
A charging system comprising: The contribution recording unit records the amount of goods purchased by the user of the electric vehicle at the store,
The charging system according to claim 1, wherein the control unit reduces the charging fee as the amount increases. A power storage unit that charges the supplied power and supplies the power by discharging;
A power supply switching unit that selectively supplies power supplied from a plurality of power sources including the power storage unit to the charging power supply unit;
The charging system according to claim 1, further comprising: When the power storage unit supplies power other than the charging power supply unit,
The charging system according to claim 3, wherein the supply power switching unit supplies power supplied from a power source other than the power storage unit to the charging power supply unit. When the amount of power charged in the power storage unit is smaller than a predetermined amount,
The charging system according to claim 3 or 4, wherein the supply power switching unit supplies power supplied from a power source other than the power storage unit to the charging power supply unit.   The power storage unit is charged with at least one of electric power generated by solar power generation and electric power purchased from an electric power company in a time zone where the electric power unit price is low. The charging system according to any one of the above.

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