Patent Publication Number: US-2021192645-A1

Title: Server device, shared battery utilization service system, method, computer program and recording medium

Description:
TECHNICAL FIELD 
     The present invention relates to a server device, a shared battery utilization service system, a method, a computer program and a recording medium. 
     Priority is claimed on Japanese Patent Application No. 2018-143638, filed Jul. 31, 2018, the content of which is incorporated herein by reference. 
     BACKGROUND ART 
     A sharing service in which a battery (a cell) that is a driving source of a moving body such as an electrically driven vehicle or the like is provided as a detachable type and shared by a plurality of users is known. In the service, a charging station configured to perform storage and charging of one or more detachable batteries is installed, and a system configured to perform billing to a user of the charging station is constructed. 
     In Patent Literature 1, a collection/charging/distribution device (a battery exchange station) configured to collect, charge and distribute portable electric energy storage devices when electric power is consumed using the portable electric energy storage devices (detachable batteries) is disclosed. Further, in the technology disclosed in Patent Literature 1, the collection/charging/distribution device has a plurality of containers configured to detachably accommodate portable electric energy storage devices to enable collection, charge and distribution thereof. 
     In addition, in Patent Literature 2, as another example of a moving body capable of detachably loading a battery into a moving body main body, a portable charge feeding device having a battery and a charge feeding unit in which an accommodating chamber configured to accommodate the battery is formed is disclosed. 
     CITATION LIST 
     Patent Literature 
     [Patent Literature 1] 
     Published Japanese Translation No. 2014-527689 of the PCT International Publication 
     [Patent Literature 2] 
     Japanese Unexamined Patent Application, First Publication No. 2019-068552 
     SUMMARY OF INVENTION 
     Technical Problem 
     However, the electrification of a moving body such as a vehicle or the like originates from environmental problems such as carbon dioxide (CO 2 ) reduction or the like, and CO 2  reduction (reduction in amount of power consumed due to improvement in power consumption rate) is required in not only electrification of mobility but also a usage environment of the moving body such as an electric vehicle (EV; an electric automobile) or the like of a user. 
     An aspect of the present invention is directed to providing a server device, a shared battery utilization service system, a method, a computer program and a recording medium that are capable of contributing to reduction in carbon dioxide under a usage environment of a moving body such as an EV or the like of a user. 
     Solution to Problem 
     (1) A server device according to an aspect of the present invention is a server device configured to provide a service in which a battery, which is detachably mounted on a moving body that is movable using electric power, is shared by a plurality of users, the server device including: an acquisition part configured to acquire information related to a power consumption rate of the battery for each of the plurality of users when the battery was used by the user; and a calculation part configured to calculate an improvement result in the power consumption rate for each of the plurality of users on the basis of the power consumption rate for the plurality of users acquired by the acquisition part. 
     (2) In the server device according to the aspect of the present invention, the information related to the power consumption rate may include an amount of the electric power used and a traveling distance of the moving body during a rental period of the battery. 
     (3) In addition, in the server device according to the aspect of the present invention, the information related to the power consumption rate may include user identification information that is information that enables identification of a user of the battery, and the calculation part may identify the user of the battery on the basis of the user identification information. 
     (4) In addition, the server device according to the aspect of the present invention may further include a storage configured to associate battery identification information that is information that enables identification of the battery with either one of the user or user identification information that is information that enables identification of the user and stores the associated information as corresponding information during the rental period of the battery, and the calculation part may identify the user of the battery on the basis of the battery identification information and the corresponding information. 
     (5) In addition, in the server device according to the aspect of the present invention, the calculation part may calculate a privilege provided to the user on the basis of the improvement result in the power consumption rate. 
     (6) A shared battery utilization service system according to an aspect of the present invention is a shared battery utilization service system configured to provide a service in which a battery, which is detachably mounted on a moving body that is movable using electric power, is shared by a plurality of users, the shared battery utilization service system including: a battery configured to store information related to a power consumption rate of the battery when used by the user; a charger configured to charge the battery and to transmit the information related to the power consumption rate acquired from the battery to a server device; and a server device configured to calculate an improvement result in the power consumption rate for each of the plurality of users on the basis of the information related to the power consumption rate received from the charger. 
     (7) In addition, in the shared battery utilization service system according to the aspect of the present invention, the information related to the power consumption rate may include an amount of the electric power used and a traveling distance of the moving body during a rental period of the battery. 
     (8) In addition, in the shared battery utilization service system according to the aspect of the present invention, the information related to the power consumption rate may include user identification information that is information that enables identification of a user of the battery, and the server device may identify the user of the battery on the basis of the user identification information. 
     (9) A shared battery utilization service system according to an aspect of the present invention is a shared battery utilization service system configured to provide a service in which a battery, which is detachably mounted on a moving body that is movable using electric power, is shared by a plurality of users, the shared battery utilization service system including: a battery configured to store information related to a power consumption rate of the battery when used by the user; a communication device configured to acquire the information related to the acquired power consumption rate from the battery, and to transmit the information related to the power consumption rate to a server device; and a server device configured to calculate an improvement result in the power consumption rate for each of the plurality of users on the basis of the information related to the power consumption rate received from the communication device. 
     (10) In addition, in the shared battery utilization service system according to the aspect of the present invention, the information related to the power consumption rate may include an amount of the electric power used and a traveling distance of the moving body during a rental period of the battery. 
     (11) In addition, in the shared battery utilization service system according to the aspect of the present invention, the information related to the power consumption rate may include user identification information that is information that enables identification of a user of the battery, and the server device may identify the user of the battery on the basis of the user identification information. 
     (12) In addition, the shared battery utilization service system according to the aspect of the present invention may further include an information terminal used by the user, the server device may transmit the improvement result in the power consumption rate to at least one of the charger configured to charge the battery and the information terminal, and the charger or the information terminal may display the improvement result in the power consumption rate. 
     (13) A method of providing a service in which a battery, which is detachably mounted on a moving body that is movable using electric power, is shared by a plurality of users according to an aspect of the present invention includes acquiring information related to a power consumption rate of the battery for each of the plurality of users when the battery was used by the user, and calculating an improvement result in the power consumption rate for each of the plurality of users on the basis of the acquired power consumption rate for the plurality of users. 
     (14) A computer program according to an aspect of the present invention is a computer program configured to provide a service in which a battery, which is detachably mounted on a moving body that is movable using electric power, is shared by a plurality of users, the computer program configured to cause a computer to execute: processing of acquiring information related to a power consumption rate of the battery for each of the plurality of users when the battery was used by the user, and processing of calculating an improvement result in the power consumption rate for each of the plurality of users on the basis of the acquired power consumption rate for the plurality of users. 
     (15) A recording medium according to an aspect of the present invention is a computer-readable recording medium on which the computer program according to the aspect of the above-mentioned (14) is recorded. 
     Advantageous Effects of Invention 
     According to the aspects of the above-mentioned (1), (6), (9), (13), (14) and (15), since the result which is an improvement in the power consumption rate can be calculated, it is possible to improve motivation of a user to improve a power consumption rate. Accordingly, according to the aspects of the above-mentioned (1), (6), (9), (13), (14) and (15), it is possible to contribute to reduction in carbon dioxide (reduction in power consumption due to improvement in power consumption rate) even in a usage environment of a moving body such as an EV or the like of a user. 
     According to the aspect of the above-mentioned (2), (7) and (10), it is possible to accurately calculate the power consumption rate for each user by calculating the power consumption rate on the basis of the amount of the electric power used and the traveling distance of the moving body during the rental period. 
     According to the aspect of the above-mentioned (3), (8) and (11), since the information related to the power consumption rate includes the user identification information that is information that enables identification of the user of the battery, it is possible to identify the user from the acquired information and calculate the power consumption rate for each user. 
     According to the aspect of the above-mentioned (4), in the rental period of the battery, the battery identification information that is the information that enables identification of the battery and the user or the user identification information that is the information that enables identification of the user are associated with each other and is stored as corresponding information. Accordingly, according to the aspect of the above-mentioned (4), it is possible to identify the user from the acquired information and the stored information and calculate the power consumption rate for each user. 
     According to the aspect of the above-mentioned (5), since a return amount (a privilege) is provided to the user on the basis of the power consumption rate, it is possible to improve motivation of the user to improve the power consumption rate. Accordingly, according to the aspect of the above-mentioned (5), it is possible to contribute to reduction in carbon dioxide (reduction in power consumption due to improvement in power consumption rate) even in a usage environment of the moving body such as an EV or the like of the user. 
     According to the aspect of the above-mentioned (12), it is possible to display the return amount (a privilege) on at least one of the charging station (the charger) and the information terminal. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a view showing the entire configuration of an electric power supply system according to a first embodiment. 
         FIG. 2  is a view showing transfer of a relationship between a detachable battery and a user ID in the first embodiment. 
         FIG. 3  is a view showing a relationship between the detachable battery and the user ID in the first embodiment. 
         FIG. 4  is a view showing a configuration example of the detachable battery according to the first embodiment. 
         FIG. 5  is a view showing a configuration example of a charging station according to the first embodiment. 
         FIG. 6  is a view showing a configuration example of a management server according to the first embodiment. 
         FIG. 7  is a view showing an example of a power consumption rate, improvement results of a power consumption rate, and a provided point of each user according to the first embodiment. 
         FIG. 8  is a view showing an example of provided points according to the first embodiment. 
         FIG. 9  is a view showing an example of return of points based on electricity bill reduction according to the first embodiment. 
         FIG. 10  is a flowchart of processing performed by a shared battery utilization service system according to the first embodiment. 
         FIG. 11  is a view showing an image example displayed on a display unit of a portable terminal according to the first embodiment. 
         FIG. 12  is a view showing the entire configuration of a shared battery utilization service system of a second embodiment. 
         FIG. 13  is a view showing a configuration example of a motorcycle according to the second embodiment. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Further, in the drawings used in the following description, the scales of members are appropriately changed in order to make the respective members have recognizable sizes. 
     First Embodiment 
     [Entire Configuration] 
       FIG. 1  is a view showing the entire configuration of a shared battery utilization service system (a battery sharing service system)  10  according to an embodiment. 
     As shown in  FIG. 1 , the shared battery utilization service system  10  is configured to include a moving body such as a saddle riding motorcycle  12  (a saddle riding vehicle, a moving body) or the like, a detachable battery  14  (a battery, a cell), a charging station (a charger)  16 , a management server  18  (a server device), and a portable terminal  28 . 
     The moving body includes a vehicle other than the motorcycle  12  (an electric saddle riding vehicle) shown in  FIG. 1 . An example of the moving body that is not a vehicle is, for example, a portable charge feeding device carried by a person or a vehicle disclosed in Japanese Unexamined Patent Application, First Publication No. 2019-068552. 
     In addition, the moving body may be a mobile robot, an autonomous traveling device, an electric bicycle, an autonomous traveling vehicle, another electrically driven vehicle, a drone flying object, or another electric moving device (electric mobility). 
     Hereinafter, the embodiment in which the motorcycle  12  is used as the example of the moving body will be described below. 
     The shared battery utilization service system  10  is a system configured to provide a sharing service in which the detachable battery  14  that is a driving source of the motorcycle  12  is shared by a plurality of users. The motorcycle  12  is an electric vehicle (EV) driven by electric power supplied from the detachable battery  14 . 
     An electric power company  30  supplies electric power to the charging station  16  via a transmission network PT. The electric power company  30  transmits an amount of power consumed to the management server  18  via, for example, a network NW. 
     The detachable battery  14  is a cassette type electrical storage device detachably mounted on the motorcycle  12  that can be driven by at least electric power. The detachable battery  14  stores battery usage state information. The battery usage state information may also be referred to as information related to power consumption rate, and the battery usage state information includes an amount of power used from the start of the rental until the return of the detachable battery  14 , traveling distance information of the motorcycle  12  from the start of the rental until the return of the detachable battery  14 , and identification information (battery identification information, also referred to as a battery ID) of the detachable battery  14 . Further, the battery usage state information or the information related to the power consumption rate may be constituted by the amount of power used from the start of the rental until the return of the detachable battery  14  and the traveling distance information of the motorcycle  12  from the start of the rental until the return of the detachable battery  14  (i.e., a traveling distance of the moving body). 
     Hereinafter, for the convenience of description, the detachable battery  14  that requires charging may be distinguished as “a used battery  14   u ” and the detachable battery  14  that has completed charge may be distinguished as “a charged battery  14   c .” Further, at least one detachable battery  14  is mounted on one motorcycle  12 . The configuration of the detachable battery  14  will be described below. Further, in the embodiment, it is assumed that the type of the detachable battery  14  used in the shared battery utilization service system  10  is one type. 
     The charging stations  16  are facilities that perform storage and charge of one or more the detachable batteries  14 , and are installed at a plurality of places. A slot section  21  constituted by a plurality of (in the example of  FIG. 1, 12 ) slots, an indicator  161 , and an authentication device  162  are provided in a housing  20  of the charging station  16 . The charging station  16  is connected to the management server  18  to communicate therewith via the network NW. The network NW is a wireless communication network or a wired communication network. A charger  163  ( FIG. 3 ) configured to charge the detachable battery  14  and a connecting section  164  ( FIG. 3 ) are provided on a back side of the slot section  21 . The charging station  16  acquires battery usage state information (information related to a power consumption rate) from the detachable battery  14  inserted into the slot section  21 . The charging station  16  transmits the acquired battery usage state information to the management server  18 . The charging station  16  transmits the number of the used batteries  14   u  and the number of the charged batteries  14   c  to the management server  18 . 
     The management server  18  acquires the number of the used batteries  14   u  and the number of the charged batteries  14   c  transmitted from the charging station  16 , and manages the detachable batteries  14  stored in the charging station  16  on the basis of the acquired information. The management server  18  performs reservation processing of renting the detachable battery  14  on the basis of, for example, the result obtained by operating the portable terminal  28  by a user. The management server  18  transmits the reservation result to the portable terminal  28 . The management server  18  performs billing according to a situation in which a user uses the detachable battery  14 . Further, a billing method may be an annual contract, a monthly contract, an n-times contract, or a one-time contract. The management server  18  is connected to the charging station  16  and the portable terminal  28  to communicate therewith via the network NW. 
     The management server  18  calculates points (a return amount, a privilege) of each user on the basis of battery usage state information (information related to a power consumption rate) received from the charging station  16 . The management server  18  transmits point information related to the calculated points to, for example, the portable terminal  28 . Further, a method of calculating points will be described below. 
     The portable terminal  28  is a terminal carried by a user, for example, a smartphone, a tablet terminal, a laptop computer, or the like. The portable terminal  28  includes a display unit  2801 . A user operates the portable terminal  28 , selects one of the charging stations  16  where the detachable battery  14  can be rented, and reserves the charging station  16 . The portable terminal  28  transmits the operation results to the management server  18 . The portable terminal  28  receives the points information transmitted from the management server  18 , and displays the received points information on the display unit  2801 . 
     [Relationship Between Detachable Battery  14  and User ID] 
     Next, a relationship between the detachable battery  14  in the shared battery utilization service system  10  and identification information (user identification information, a user ID) of a user will be described. 
       FIG. 2  is a view showing transfer of a relationship between a battery ID and a user ID according to the embodiment. 
     (Step S 1 ) A user visits a battery supply shop or the charging station  16  when starting the use of the system. The user registers user information upon starting rental of a first battery. The user information includes the user&#39;s full name, the user&#39;s address, information on the motorcycle  12  the user is riding, information on where the usage fee will be withdrawn, and the like. Next, the battery supply shop or the charging station  16  transmits the acquired user information to the management server  18 . Next, the management server  18  stores the acquired user information. Next, the management server  18  generates a user ID on the basis of the user information, and transmits the generated user ID to the charging station  16 . Next, the battery supply shop or the charging station  16  links the user ID to the battery ID of the detachable battery  14  that is rented, and transmits the linked information to the management server  18 . Further, the management server  18  stores the battery ID. 
     Further, the user ID may be generated by the battery supply shop or the charging station  16 , and in this case, the charging station  16  may link the generated user ID to the battery ID of the detachable battery  14  rented and may transmit it to the management server  18 . 
     (Step S 2 ) The user visits the charging station  16  to return the used detachable battery  14  (the used battery  14   u ). 
     (Step S 3 ) The charging station  16  reads the battery ID of the used battery  14   u  that was returned. Next, the charging station  16  transmits the battery ID of the used battery  14   u  and the battery ID of the charged battery  14   c  that can be rented to the management server  18 . Next, the management server  18  performs transfer of linkage information by releasing linkage of the user ID linked to the battery ID of the used battery  14   u  that was returned, and linking the user ID to the battery ID of the charged battery  14   c  that is going to be rent on the basis of the information received from the charging station  16 . Next, the management server  18  transmits the newly linked information to the charging station  16 . 
     (Step S 4 ) The charging station  16  rents the detachable battery  14  (the charged battery  14   c ) newly linked to the user ID after transfer of the linkage information has been terminated by the management server  18 . 
       FIG. 3  is a view showing a relationship between the detachable battery  14  according to the embodiment and the user ID. 
     In the example shown in  FIG. 3 , on Dec. 6, 2017, a battery with ID “BAT 00001 ” was returned, and a user ID “USE 00001 ” was linked to this detachable battery  14  upon return. The management server  18  releases this linkage, and relinks the user ID “USE 00001 ” to the battery ID of “BAT 00012 ” of the detachable battery  14  that is going to be rent. 
     [Configuration of Detachable Battery  14 ] 
     Next, a configuration example of the detachable battery  14  will be described. 
       FIG. 4  is a view showing a configuration example of the detachable battery  14  according to the embodiment. As shown in  FIG. 4 , the detachable battery  14  includes a power storage  141 , a measurement sensor  142 , a BMU  143 , a storage  144 , and a connecting section  145 . 
     The power storage  141  is for example, any one of a secondary battery, a lead storage battery, a capacitor, a lithium ion battery, and the like. 
     The measurement sensor  142  is constituted by various types of sensors configured to measure a current or a temperature. The measurement sensor  142  outputs the measured measurement value to the BMU  143 . The temperature sensor measures a temperature of the power storage  141 . In addition, the current sensor measures a value of the current that flows to the power storage  141 . 
     The BMU  143  is a battery management unit, and controls charge or power feeding to the power storage  141 . The BMU  143  stores the measurement value output from the measurement sensor  142  to the storage  144  at, for example, each predetermined timing. The BMU  143  calculates an amount of power used from the start of the rental until the return of the detachable battery  14  on the basis of a state of charge (SOC), a remaining capacity, and information of a current and a voltage upon discharge of the detachable battery  14  and stores the amount of power used that was calculated in the storage  144 . The BMU  143  acquires the traveling distance information related to the traveling distance during the rental period from the start of the rental until the return of the detachable battery  14  from the motorcycle  12 , and stores the acquired traveling distance information in the storage  144 . The BMU  143  associates the amount of power used and the traveling distance information with the battery ID, and stores it in the storage  144 . The BMU  143  outputs the information stored in the storage  144  to the charging station  16  when the detachable battery  14  is inserted into the slot section  21  of the charging station  16 . 
     The storage  144  stores battery usage state information (information related to a power consumption rate). The storage  144  stores identification information of the detachable battery  14 , a measurement value (including temperature information) of the measurement sensor  142  during the rental period, information of the SOC of the detachable battery  14  during the rental period, and the like. The storage  144  stores a program of causing the BMU  143  to execute processing. 
     The connecting section  145  is a connecting section to the slot section  21  of the charging station  16 , and has a communication function. 
     [Configuration of Charging Station  16 ] 
     Next, a configuration example of the charging station  16  will be described. 
       FIG. 5  is a view showing the configuration example of the charging station  16  according to the embodiment. As shown in  FIG. 5 , the charging station  16  includes the indicator  161 , the authentication device  162 , the charger  163 , the connecting section  164 , a communication part  165 , a storage  166 , and a controller  167 . 
     The controller  167  includes a charge controller  1671 , a measurement sensor  1672 , and an information acquisition part  1673 . 
     Further, the charging station  16  receives electric power from the transmission network PT. 
     The indicator  161  is any one of a liquid crystal display device, an organic electro luminescence (EL) display device, an electronic ink display device, and the like. The indicator  161  displays the information output from the controller  167 . The displayed information is, for example, a remaining capacity, a usage fee, or the like, of the detachable battery  14 . 
     The authentication device  162  is an instrument configured to read recording information of a near field communication (NFC) card (not shown) carried by a user using, for example, NFC. Accordingly, the charging station  16  reads the user ID included in the recording information. The authentication device  162  outputs the acquired user ID to the controller  167 , and authenticates a user having usage authority of a sharing service on the basis of the authentication result output from the communication part  165 . 
     The charger  163  is an instrument configured to charge the detachable battery  14  under control of the controller  167  in a state in which the connecting section  145  of the detachable battery  14  is connected to the connecting section  164  of the charging station  16 . A power supply (not shown) configured to supply electric power to the detachable battery  14  is connected to the charger  163 . 
     The connecting section  164  is a connecting section to the detachable battery  14 , and performs supply of electric power and transmission and reception of information. The connecting section  164  acquires battery usage state information (information related to a power consumption rate) output from the detachable battery  14 , and outputs the acquired battery usage state information to the information acquisition part  1673 . 
     The communication part  165  transmits the battery usage state information (the information related to the power consumption rate) output from the controller  167  to the management server  18  via the network NW. The communication part  165  receives reservation information of the detachable battery  14  transmitted from the management server  18 , and outputs the received reservation information of the detachable battery  14  to the controller  167 . The communication part  165  transmits the number of rentable detachable batteries  14  which are assigned at the charging station  16 , which is output from the controller  167 , or the like, to the management server  18 . The communication part  165  transmits the user ID to which the identification information of the charging station  16  is assigned, which is output from the controller  167 , to the management server  18 . The communication part  165  receives the authentication result authenticated by the management server  18 , and outputs the received authentication result to the authentication device  162 . 
     The storage  166  stores identification information of the charging station  16 , and stores the battery usage state information (the information related to the power consumption rate) or the like when the detachable battery  14  is returned. The storage  166  stores a program causing the controller  167  to execute processing. 
     The controller  167  acquires the battery usage state information (the information related to the power consumption rate) output from the connecting section  164 , and outputs the acquired battery usage state information to the communication part  165 . Further, the battery ID is assigned to the battery usage state information. As described above, the user ID is linked to the battery ID. Further, the controller  167  may cause the storage  166  to store the battery usage state information (the information related to the power consumption rate). 
     Further, the controller  167  functions as the charge controller  1671 , the information acquisition part  1673 , and a processing part  1674  by reading and executing a program stored in the storage  166 . The controller  167  detects the number of rentable detachable batteries  14  on the basis of the information stored in the storage  166 , and the charging station  16  outputs the assigned number of the rentable detachable batteries  14  that were detected to the communication part  165 . 
     The controller  167  allows rental of the detachable battery  14  to the user when authentication of the user by the authentication device  162  is successful. 
     The charge controller  1671  controls the charger  163  such that charging of the detachable battery  14  inserted into the slot section  21  is performed on the basis of the measurement value of the measurement sensor  1672 . 
     The measurement sensor  1672  is, for example, a current sensor and a voltage sensor. The measurement sensor  1672  measures values of the current and the voltage that flow to the detachable battery  14 , and outputs the measurement values to the charge controller  1671 . 
     The information acquisition part  1673  acquires the battery information output from the detachable battery  14  connected to the connecting section  164 , and stores the acquired battery information in the storage  166 . 
     [Configuration of Management Server  18 ] 
     Next, a configuration example of the management server  18  will be described. 
       FIG. 6  is a view showing the configuration example of the management server  18  according to the embodiment. As shown in  FIG. 6 , the management server  18  includes a communication part  181 , a storage  182 , a controller  183 , and an output part  184 . In addition, the controller  183  includes an information acquisition part  1831 , and a calculation part  1832 . 
     The communication part  181  receives the battery usage state information (the information related to the power consumption rate) transmitted from the charging station  16  via the network NW, and outputs the received battery usage state information to the controller  183 . The communication part  181  transmits the information related to the points (the privilege) output from the controller  183  to the portable terminal  28  via the network NW. 
     During the rental period, the storage  182  associates the battery ID (battery identification information) with either one of the user or the user ID (user identification information) and stores it as corresponding information. 
     The storage  182  stores an amount of power used and traveling distance information of each user and upon each rental use. The storage  182  stores the program causing the controller  183  to execute processing. 
     The controller  183  acquires the battery usage state information (the information related to the power consumption rate) output from the communication part  181 , and stores the acquired battery usage state information in the storage  182 . The controller  183  calculates a power consumption rate for each user and upon each rental use. The controller  183  calculates an average value of the power consumption rates of the users in the predetermined period. The controller  183  calculates the points (the privilege) of each user on the basis of the calculated power consumption rate of each user. The predetermined period is, for example, one week. 
     Further, in the embodiment, the power consumption rate will be stated using units of [km/kwh]. However, the power consumption rate is an indicator representing a traveling distance per unit capacity of an electric power energy source (various types of power supplies, batteries, or the like) or how much electric power is required for traveling a certain distance, and any unit other than [km/kwh] may be used as long as it satisfies this indicator. 
     The information acquisition part  1831  acquires the battery usage state information (the information related to the power consumption rate) output from the communication part  181 , and outputs the acquired battery usage state information to the calculation part  1832 . 
     The calculation part  1832  calculates the power consumption rate when the detachable battery  14  is returned, and associates the calculated power consumption rate with the user ID linked to the battery ID and stores it in the storage  182 . 
     The calculation part  1832  specifies a user of the returned detachable battery  14  on the basis of the battery ID (battery identification information) and the corresponding information stored in the storage  182 . 
     The calculation part  1832  calculates, for example, an improvement result in the power consumption rate for each user on the basis of the power consumption rate of the plurality of users and calculates the points (the privilege) for each user on the basis of the calculated result. 
     In addition, the calculation part  1832  may calculate, for example, an average value of the power consumption rates of each of the users at each of arbitrary timings, and calculate the points (the privilege) for each user on the basis of the calculated result. Further, a method of calculating points will be described below. The arbitrary timing is, for example, every week or every month. 
     The output part  184  is an image display device, a printing device, or the like. The output part  184  displays or prints the points for each user output from the controller  183 . 
     [Method of Calculating Points] 
     Next, a method of calculating points will be described. 
       FIG. 7  is a view showing an example of a power consumption rate for each user, and an improvement result for the power consumption rate and assigned points according to the embodiment. 
     When the detachable battery  14  is returned, the calculation part  1832  of the management server  18  calculates a power consumption rate [km/kwh] from the start of the rental until the return for each user and upon each rental use on the basis of the information acquired from the charging station  16 . The calculation part  1832  associates the power consumption rate calculated as shown in  FIG. 7  with the user ID and stores it in the storage  182 . In the example shown in  FIG. 7 , the storage  182  stores the user ID “USE 00001 ” while being associated with the power consumption rates of “8.7 [km/kwh]” and “8.5 [km/kwh]” . . . , and so on. 
     Specifically, the information acquisition part  1831  acquires the amount of power used and the traveling distance information of the returned detachable battery  14  (the battery ID of “BAT 00001 ”) for each user. The calculation part  1832  calculates the first usage power consumption rate of “8.7 [km/kwh]” by using the obtained amount of power used and the obtained traveling distance information. 
     The calculation part  1832  reads the user ID “USE 00001 ”, which is linked to the battery ID “BAT 00001 ” of the returned detachable battery  14 , from the storage  182 . The calculation part  1832  associates the power consumption rate of “8.7 [km/kwh]” with the user ID “USE 00001 ” and stores it in the storage  182 . 
     The information acquisition part  1831  acquires the amount of power used and the traveling distance information of the returned detachable battery  14  (the battery ID of “BAT 00011 ”). The calculation part  1832  calculates the second usage power consumption rate of “8.5 [km/kwh]” by using the obtained amount of power used and the obtained traveling distance information. 
     The calculation part  1832  reads the user ID “USE 00001 ”, which is linked to the battery ID “BAT 00001 ” of the returned detachable battery  14 , from the storage  182 . The calculation part  1832  associates the power consumption rate of “8.5 [km/kwh]” with the user ID “USE 00001 ” and stores it in the storage  182 . 
     The calculation part  1832  calculates the result which is an improvement in the power consumption rate for each user on the basis of the power consumption rate of the user acquired by the information acquisition part  1831 . For example, in the example shown in  FIG. 7 , the calculation part  1832  compares the first usage power consumption rate of “9.0 [km/kwh]” with the second usage power consumption rate of “9.4 [1 m/kwh]” of the user ID “USE 00101 ”, and calculates the improvement result of the power consumption rate. In the example of  FIG. 7 , the calculation part  1832  calculates that the power consumption rate of the user ID “USE 00101 ” was improved by “+0.4 [km/kwh]” in the second usage in comparison with the first usage. 
     The calculation part  1832  calculates the privilege provided to each user on the basis of the improvement result of the power consumption rate calculated for each user. For example, in the example shown in  FIG. 7 , the calculation part  1832  calculates the privilege provided to each user as provided points on the basis of the improvement result of the power consumption rate calculated for each user. Specifically, a large number of points (a privilege) is provided to a user whose power consumption rate is improved in comparison with the previous usage. For example, the calculation part  1832  calculates the provided points as 0 points with respect to the user ID “USE 00001 ” for which there was no improvement in the power consumption rate in the second usage in comparison with the first usage. In addition, for example, the calculation part  1832  calculates the provided points as 5 points with respect to the user ID “USE 00003 ” and “USE 00101 ” for which the power consumption rate has improved by “+0.4 [km/kwh]” in the second usage in comparison with the first usage. In addition, for example, the calculation part  1832  calculates the provide points as 10 points with respect to the user ID “USE 00002 ” for which the power consumption rate has improved by “+0.6 [km/kwh]” in the second usage in comparison with the first usage. 
       FIG. 8  is a view showing another example of assigned points according to the embodiment. 
     The calculation part  1832  obtains an average value of the power consumption rate for each user, for example, once per week. Then, the calculation part  1832  sorts the data in descending order of the power consumption rate as shown in  FIG. 8 . The calculation part  1832  provides points to each of predetermined higher-ranking users in the sorted data. In the example shown in  FIG. 8 , 10 points are assigned to a user whose average value of the power consumption rate is 9.0 [km/kwh] or more, and 5 points are assigned to a user whose average value is 8.0 [km/kwh] or more. Further, the calculation part  1832  may assign the same number of points to all of a predetermined number of people from the top. 
       FIG. 9  is a view showing an example of returning points based on electricity bill reduction according to the embodiment. 
     It is assumed that the user who uses the motorcycle  12  makes a contract with a provider of this service on a monthly basis, for example, and pays a fee. Since the number of charges is smaller when driving with a good power consumption rate is performed compared to when driving with a poor power consumption rate is performed, the electric power used for the battery charge can be reduced. An electricity bill to be paid to the electric power company  30  can also be reduced by reducing the electric power required for battery charging in this way. 
     The management server  18  calculates the points that can be returned (applied) to the user on the basis of the costs that can be reduced in this way. In addition, the management server  18  may also calculate how many top users should be assigned points. For this reason, it can be made that the number of people to whom points can be assigned becomes larger as the electricity bills are further reduced. Alternatively, it can be made that the number of people to whom points are assigned is fixed, and the further electricity bills can be reduced, the more points may be assigned. Further, the management server  18  may provide a threshold such that the points are assigned to a predetermined number of people from the top who have a power consumption rate that is equal to or greater than the threshold. 
     [Processing Sequence of Shared Battery Utilization Service System  10 ] 
     Next, an example of a processing sequence performed by the shared battery utilization service system  10  will be described. 
       FIG. 10  is a flowchart of processing performed by the shared battery utilization service system  10  according to the embodiment. Further, in the processing shown in  FIG. 9 , the processing will be performed after each of the plurality of users have already performed registration of the user upon the first rental. 
     (Step S 11 ) The controller  167  of the charging station  16  reads the battery usage state information (the information related to the power consumption rate) from the storage  144  of the detachable battery  14  when the user returns the detachable battery  14 . Next, the controller  167  transmits the read battery usage state information to the management server  18  through the communication part  165 . 
     (Step S 12 ) The calculation part  1832  of the management server  18  calculates the power consumption rate for each user and upon each traveling using the received battery usage state information (the information related to the power consumption rate), and stores the calculated result in the storage  182 . Further, the management server  18  retrieves the user ID by referring to the information stored in the storage  182  and the battery ID included in the received battery usage state information, and identifies the user of the returned detachable battery  14 . 
     (Step S 13 ) The calculation part  1832  calculates the average value of the power consumption rate for each user in the predetermined period, and stores the calculated average value of the power consumption rates for each user in the storage  182 . Further, as described above, the calculation part  1832  may calculate the improvement result in the power consumption rate for each user on the basis of the power consumption rates of the plurality of users and store the improvement result of the calculated power consumption rate in the storage  182 . 
     (Step S 14 ) The calculation part  1832  rearranges (also referred to as sorts) the calculated average values of the power consumption rates in descending order at an arbitrary timing. Next, as a result of sorting, the calculation part  1832  assigns points to the top users in the specified ratio. In addition, the points may be assigned on the basis of the improvement result of the power consumption rate of the user. In this case, for example, a larger number of points (a privilege) may be assigned to a user whose power consumption rate has been improved (ameliorated) in comparison with the previous use. 
     (Step S 15 ) The calculation part  1832  repeats processing of step S 11  to S 14 , accumulates the points for each user, and updates the information stored in the storage  182 . 
     (Step S 16 ) The calculation part  1832  provides services such as usage fee discounts using the points when a user makes an application in a step in which a certain number of points has been accumulated. 
     The certain number of points is, for example, 100 points. The controller  183  of the management server  18  notifies the portable terminal  28  of the points, for example, monthly. The user checks the points displayed on the display unit  2801  of the portable terminal  28 , and, for example, selects use of 100 points. 
     Further, while the example in which the battery ID is assigned to the battery usage state information (the information related to the power consumption rate) has been described in the above-mentioned example, there is no limitation thereto. Upon rental of the detachable battery  14 , the controller  167  of the charging station  16  may store the user ID of the user who rents the detachable battery  14  in the storage  144  thereof. Alternatively, the controller  167  of the charging station  16  may assign the user ID acquired by the authentication device  162  to the battery usage state information when the detachable battery  14  is returned. In these cases, the controller  167  of the charging station  16  may transmit the battery usage state information including the user ID to the management server  18  through the communication part  165 . 
       FIG. 11  is a view showing an image example displayed on the display unit  2801  of the portable terminal  28  according to the embodiment. In  FIG. 11 , reference sign g 201  designates an image showing the number of current points. Reference sign g 202  designates a button image for point usage application. Reference sign g 203  designates an image of a field in which the points to be used are input when the points are used. 
     Further, the image shown in  FIG. 11  is an example, and there is no limitation thereto. 
     In addition, the controller  183  of the management server  18  may transmit the image data shown in  FIG. 11  to the charging station  16  when the detachable battery  14  is returned. In this case, the controller  183  may display the image shown in  FIG. 11  on the indicator  161 . 
     As described above, in the embodiment, from the start of the rental until the return of the detachable battery  14  at the charging station  16  by a user is set as one cycle, and the power consumption rate for each cycle is measured from the usage charge/discharge quantity and the moving distance on the basis of the information received from the charging station  16  by the management server  18 . Then, in the embodiment, a service of providing a privilege such as point assignment to a user with a good power consumption rate and discounting the fee or the like by the accumulated points is provided. 
     According to the configuration, since the user can receive return such as points or the like by improving the power consumption rate according to the embodiment, motivation of the user for improving the power consumption rate can be improved. Accordingly, according to the embodiment, it is possible to contribute to reduction in carbon dioxide (reduction in power consumption due to improvement of a power consumption rate) even in EV usage environment of the user. 
     Second Embodiment 
     While the example in which the charging station  16  transmits the amount of power used and the traveling distance information (the information related to the power consumption rate) acquired from the detachable battery  14  to the management server  18  has been described in the first embodiment, there is no limitation thereto. In the embodiment, an example in which a communication device is mounted on the motorcycle  12  and the communication device transmits the amount of power used and the traveling distance information (the information related to the power consumption rate) to the management server  18  will be described. 
     [Entire Configuration] 
       FIG. 12  is a view showing the entire configuration of a shared battery utilization service system  10 A according to the embodiment. 
     As shown in  FIG. 12 , the shared battery utilization service system  10 A is configured to include a saddle riding motorcycle  12  (a saddle riding vehicle, a moving body), a TCU  13 , a detachable battery  14  (a battery, a cell), a charging station (a charger)  16 , a management server  18  (a server device), and a portable terminal  28 . Components having the same functions as those of the shared battery utilization service system  10  are designated by the same reference signs and description thereof will be omitted. The TCU  13  will be described using  FIG. 13 . 
     [Configuration of Motorcycle  12 ] 
       FIG. 13  is a view showing a configuration example of the motorcycle  12  according to the embodiment. As shown in  FIG. 13 , the motorcycle (the moving body)  12  includes the TCU  13 , an indicator  121 , a storage  122 , a controller  123 , and the detachable battery  14 . The controller  123  includes an information acquisition part  1231 , and a calculation part  1232 . 
     The indicator  121  is configured to include a speed meter, an odometer, a turning indication display lamp, a shift lever position display lamp, a battery residual capacity meter, and the like. The indicator  121  displays information output from the controller  123 . 
     The storage  122  stores a traveling distance from the beginning of rental of the detachable battery  14  (the information related to the power consumption rate). The storage  122  stores a program of causing the controller  123  to execute processing. 
     The controller  123  generates various types of information displayed on the indicator  121  on the basis of the information acquired from the detachable battery  14  and the motorcycle  12 , and outputs the generated information to the indicator  121 . 
     The information acquisition part  1231  acquires the traveling distance from the motorcycle  12 , and outputs the acquired traveling distance to the calculation part  1232 . The information acquisition part  1231  acquires the amount of power used (the information related to the power consumption rate) and the battery ID from the storage  144  of the detachable battery  14 , and outputs the amount of power used and the battery ID that were acquired to the TCU  13 . The information acquisition part  1231  acquires the traveling distance information from the storage  122 , and outputs the acquired traveling distance information to the TCU  13 . 
     The calculation part  1232  acquires the traveling distance output from the information acquisition part  1231 , and calculates the traveling distance from the beginning of rental. The calculation part  1232  stores the calculated traveling distance from the beginning of rental in the storage  122 . 
     The telematics communication part (TCU)  13  is a communication part mounted in the motorcycle  12 . The TCU  13  acquires the amount of power used, the battery ID, and the traveling distance information output from the information acquisition part  1231 . The TCU  13  transmits the amount of power used and the traveling distance information to which the battery ID is assigned to the management server  18  via the network NW. The transmission timing is, for example, a predetermined time point or a predetermined time interval (for example, every minute). 
     Further, the motorcycle  12  may include a global positioning system (GPS) receiver (not shown). When the motorcycle  12  includes the GPS receiver, the TCU  13  may acquire position information (a latitude, a longitude) from the GPS receiver, and may transmit the acquired position information to the management server  18  together with the amount of power used and the traveling distance information to which the battery ID is assigned. 
     Even in the embodiment, the management server  18  calculates the power consumption rate for each user on the basis of the amount of power used and the traveling distance information (the information related to the power consumption rate) to which the acquired battery ID is assigned. Then, the management server  18  assigns the points to each user. 
     As described above, in the embodiment, from the start of the rental until the return of the detachable battery  14  at the charging station  16  by a user is set as 1 cycle, and the power consumption rate for each cycle is measured from the usage charge/discharge quantity and the moving distance by the management server  18 . Then, even in the embodiment, like the first embodiment, a service of assigning the privilege such as point assignment or the like to a user with a good power consumption rate and performing discount or the like of the fee according to the accumulated points is provided. 
     According to the configuration, even in the embodiment, the same effects as those of the first embodiment can be obtained. 
     Further, while the example in which the points are returned as a return amount to users with higher power consumption rates has been described in the above-mentioned first and second embodiments, there is no limitation thereto. The return amount may be a discount amount from the usage fee or may be the number of free usages, a free usage period, or the like. 
     Further, while the example in which notification is transmitted to the users only with higher power consumption rates has been described in the above-mentioned first and second embodiments, there is no limitation thereto. The management server  18  may transmit an advice for improving the power consumption rate to the portable terminal  28  of the user to which no point is assigned. 
     Further, a program configured to realize the functions of the management server  18  according to the present invention entirely or partially may be recorded on a computer-readable recording medium, and the processing performed by the management server  18  may be performed entirely or partially by reading and executing the program recorded on the recording medium using a computer system. Further, “the computer system” disclosed herein includes OS or hardware such as peripheral devices or the like. In addition, “the computer system” includes a WWW system including a homepage providing environment (or a display environment). In addition, “the computer-readable recording medium” is referred to as a storage device such as a flexible disk, an optomagnetic disk, a portable medium such as ROM, CD-ROM, or the like, a hard disk installed in a computer system, or the like. Further, “the computer-readable recording medium” may include a medium that holds a program for a certain time, for example, a volatile memory (RAM) in a computer system that is a server or a client when a program is transmitted via a network such as the Internet or the like or a communication line such as a telephone line or the like. 
     In addition, the program may be transmitted to another computer system from a computer system in which the program is stored in a storage device or the like via a transmission medium or by transmission waves in the transmission medium. Here, “the transmission medium” that transmits a program is referred to as a medium having a function of transmitting information, for example, a network (a communication network) such as the Internet or the like, a communication line (a communication wire) such as a telephone line or the like. In addition, the program may be configured to realize a part of the above-mentioned function. Further, the above-mentioned function may be a so-called differential file (a differential program) that can be assembled to and realized by the program already recorded in the computer system. 
     Hereinabove, while the aspects of performing the present invention have been described using the embodiments, the present invention is not particularly limited to the above-mentioned embodiment and various modifications and substitutions may be made without departing from the scope of the present invention. 
     REFERENCE SIGNS LIST 
       10 ,  10 A . . . shared battery utilization service system,  12  . . . motorcycle (moving body),  13  . . . TCU,  14  . . . detachable battery,  16  . . . charging station (charger),  18  . . . management server,  28  . . . portable terminal,  141  . . . power storage,  142  . . . measurement sensor,  143  . . . BMU,  144  . . . storage,  145  . . . connecting section,  161  . . . indicator,  162  . . . authentication device,  163  . . . charger,  164  . . . connecting section,  165  . . . communication part,  166  . . . storage,  167  . . . controller,  1671  . . . charge controller,  1672  . . . measurement sensor,  1673  . . . information acquisition part,  181  . . . communication part,  182  . . . storage,  183  . . . controller,  184  . . . output part,  1831  . . . information acquisition part,  1832  . . . calculation part,  121  . . . indicator,  122  . . . storage,  123  . . . controller,  1231  . . . information acquisition part,  1232  . . . calculation part