DE102019200815A1 - Method for renting an energy storage device of a motor vehicle, computer program product and motor vehicle - Google Patents

Abstract

The invention relates to a method for renting an energy store (18) of a motor vehicle (12) from a first user (16) to a second user (34), with a central data processing device (14) depending on one carried out by the first user (16) Input, an input signal (E) is received which specifies the wish of the first user (16) to rent the energy store (18), a rental function in the motor vehicle (12) being activated as a function of the input, at least one control signal (S) for charging and / or discharging the energy store (18) to the motor vehicle (12), and wherein the energy store (18) under the first condition that the energy store (18) of the motor vehicle (12) is coupled to a power network (22) is, and under the second condition that the rental function is enabled, at least in part depending on the at least one control signal (S) is loaded and / or unloaded.

Description

The invention relates to a method for renting an energy store of a motor vehicle, as well as a computer program product and a motor vehicle.

Motor vehicles, in particular electric vehicles, typically comprise an energy store, for example in the form of a high-voltage battery. However, since electric vehicles are typically not in motion all day, but are mostly at a standstill, the energy storage devices installed in the electric vehicles are ultimately not used particularly efficiently.

In addition to the possibility of using it as an energy supplier for operating the electric vehicle, an energy store can also be used for business purposes, for example in the US 2014/0077766 A1 described, wherein, for example, inexpensive electricity can be loaded from the power grid into the energy store and, at a time with higher electricity costs, electricity can be fed into the grid from the energy store with a corresponding remuneration of the owner of the energy store.

Furthermore describe the DE 10 2009 028 500 A1 and the EP 3 335 925 A1 the possibility of using an energy store to support a power network, for example reactive power regulated by the energy store of the motor vehicle, which can be used to stabilize the network, can be fed into the power network.

The object of the present invention is to provide a method, a computer program product and a motor vehicle, which make it possible to further increase the efficiency of the use of energy stores in motor vehicles.

This object is achieved by a method, a computer program product and a motor vehicle with the features according to the respective independent patent claims. Advantageous embodiments of the invention are the subject of the dependent claims, the description and the figures.

In a method according to the invention for renting an energy storage device of a motor vehicle from a first user to a second user, an input signal is received from a central data processing device depending on an input made by the first user, which specifies the desire of the first user to rent the energy storage device. Furthermore, a rental function in the motor vehicle is activated depending on the input. In addition, at least one control signal for charging and / or discharging the energy store is transmitted to the motor vehicle and the energy store under the first condition that the energy store of the motor vehicle is coupled to a power supply and under the second condition that the rental function is activated Dependent on the at least one control signal at least partially charged and / or discharged.

Thus, a first user can advantageously and above all in a particularly simple manner simply by connecting the energy store to the power grid and by activating a rental function temporarily avoiding his energy store to other interested parties, such as the second user, so that the energy store, in particular the capacity provided by the energy store , now advantageously during a period during which the energy store or the motor vehicle, for example, is not currently needed by the first user, can be made available to other users, on the one hand, in order to store energy in this rented energy store or to use this energy store to supply energy relate as needed. The first user can then be remunerated accordingly, for example for the rental period, which then advantageously also offers the first user a great incentive to make his energy store available to other users during times when he does not need it anyway. This in turn also makes electric vehicles economically more efficient and offers many users an incentive to switch to such an environmentally friendly electric vehicle. This also offers a huge business area for large customers who, for example, own a fleet of electric cars. These can be rented out as electrical buffer storage at the weekend, for example, when they are on the factory premises. The invention also has numerous advantages on the tenant side. The tenant, namely the second user, can be a private person on the one hand, or a company, or a network operator or electricity supplier. By renting or leasing the energy storage device, it is advantageously possible, for example, to optimize the network utilization of the power network, which is particularly advantageous for network operators and also for end consumers, since this can reduce electricity costs. If, for example, the grid utilization of the power grid is currently very low and, for example, the generation capacity of power generators, such as power plants or private households or the like, is very high, rented energy storage devices can advantageously be used to temporarily store energy in to load and store these energy stores. If the network utilization is then very high at another point in time, the temporarily stored energy can be removed from the energy storage device accordingly and supplied to the appropriate consumers. By optimizing the network utilization in this way, electricity costs can be reduced and, above all, renewable energy sources can be used much more efficiently. The rented energy storage device can also be used by a second user in order to operate and earn money with it, as described, for example, at the beginning for the owner of an energy storage device. At times when the electricity prices are currently cheap, energy can be loaded into the buffer store and at times when the electricity prices are then higher, the second user can sell the temporarily stored energy again and load it into the network accordingly. This application option is now advantageously no longer restricted to the owner. This possibility is now advantageously not only made possible for the owner or owner of the energy store, but now also for a second user who does not have an electric vehicle or an energy store himself, but who can advantageously rent one for the period during which this energy store runs from actual owner is not used or needed anyway. Due to the mass of electric vehicles and the energy storage built into them, this advantageous rental function enables huge additional capacities to be made available in a particularly flexible manner and, above all, shared. This can enormously increase the efficiency of using such energy storage.

The central data processing device can represent, for example, an internet provider and / or a cloud server. A first user can therefore register in a simple manner, for example via this Internet provider, and store his user data on this central data processing device, such as his address or the location of the connection option for connecting the energy store, the capacity of his energy store, or the like. By entering the user, the first user can easily activate the rental function or release it for activation at a future time or period. The user can make this input on any terminal device on which, for example, a corresponding app or an application program is running, which then correspondingly transmits it to the central data processing device as a function of the input signal input. Such a terminal can be provided, for example, by a mobile communication device, such as a user's smartphone, by a home computer or by a communication device in the motor vehicle itself. The central data processing device can also be assigned to a power supplier or network operator. In other words, the functionality of this letting function can be provided directly by a network operator or electricity supplier via the central data processing device, with which appropriate users can then register in order to rent their energy storage devices to them. A plurality of central data processing devices can also be integrated into the method, such as a central data processing device of a service provider that cooperates or communicates with a data processing device of a network operator or electricity supplier in order to corresponding interested parties, such as the network operators, in accordance with energy stores that are to be rented out by first users or to assign to electricity suppliers or other private customers.

The activation of the rental function in the motor vehicle as a function of the input made by the first user can likewise be carried out by the central data processing device or by the end device mentioned above by the user himself or by an appropriate app. The user can also make such an entry to activate the rental function directly in the motor vehicle, for example, and the motor vehicle then activates the rental function, for example for the desired period. The control signal for charging and / or discharging can also be transmitted from the central data processing device to the motor vehicle. In the course of the rental period, several control signals can also be transmitted, for example sequentially in time, so that, for example, the energy store is charged as a function of a first control signal for charging the energy store and as a function of a second subsequent control signal for partially discharging the energy store again is discharged, and so on.

In an advantageous embodiment of the invention, the central data processing device assigns the energy store to the at least one second user as a function of the received input signal, energy being provided by a device of the second user when the rental function is enabled, and which is loaded into the energy store via the power supply system, and / or energy is drawn from the energy store by a device of the second user via the power grid.

As already described above, the rented energy store can advantageously be used by the second user to temporarily store energy or to obtain it from the energy store. There are numerous possible applications for this. As described, the second user can represent, for example, a power supplier or network operator himself, who can use the energy store in this way to optimize the network utilization. However, the second user can also represent a private user, such as a household with a photovoltaic system, the energy storage integrated in the house not being sufficient on beautiful, sunny days to completely store the energy produced by the photovoltaic system. Such a second user is now advantageously provided with the option of renting such an energy store from another first user for a certain period of time and then temporarily storing his excess energy until it is again required by the household and can then advantageously be obtained again from the energy store . This significantly increases the flexibility with regard to the temporary storage of energy.

In a particularly advantageous embodiment of the invention, the input signal, which is dependent on the input made by the first user, additionally specifies a specific, future rental period for renting the energy store, the rental function then being activated only during the specified, determined rental period. For example, the first user can use the above-mentioned app to enter the period in which he wants to rent his energy storage device. For example, the user can enter a start and end time or a start time and a corresponding rental period. If a first user goes on vacation for several weeks, for example, he can advantageously set this vacation period as the rental period and then efficiently rent out his energy storage during this period, during which he would otherwise be unused anyway. The first user then only has to couple the energy store to the energy network, so that at least it is ensured that the energy store is also connected to the power network during the specified rental period. The energy storage device can be connected, for example, as usual by means of a charging cable from the energy storage device or a charging socket of the motor vehicle, for example to a household socket, to a wall box which is connected to the mains, to a charging station or the like. The first user can also optionally specify additional rental modalities via the app, such as the maximum number of charging and / or discharging cycles, a rental fee or the like.

It is also advantageous if the rental function is only activated if the rental period is at least half a day. Only then will the rental of such an energy store be efficient.

Furthermore, the rental function can advantageously be activated independently of a current state of charge of the energy store. Since the energy store can advantageously be used bidirectionally, in particular to obtain energy from the energy store and, on the other hand, to temporarily store energy in the energy store, the initial state of charge of the energy store is in principle irrelevant. It only depends on the capacity of the energy storage that can be made available. For example, if the energy storage device is fully charged, it cannot be used for a while to continue charging energy into the energy storage device, but especially with a longer rental period, as mentioned above, there is a very high probability within this rental period the need of at least one second user to obtain energy from the energy store, and then again a very high probability the need of the second user or another second user to reload energy into the energy store, and so on. It is particularly advantageous if the energy storage device is neither fully charged nor fully discharged at the beginning of the rental period, but is only partially charged, because then there is the option of charging and storing the energy storage device right from the start of the rental period Unload part.

In a further advantageous embodiment of the invention, the charging and / or discharging of the energy store is controlled in such a way that a state of charge of the energy store after the end of the rental is the same as at the start of the rental, or the state of charge of the energy store after the end of the rental by the user the input made corresponds to the specified final charge state. This has the advantage that after the end of the rental period the user then finds his motor vehicle with the energy store expected to be charged, which further increases the comfort for the user. Either the energy storage is provided at the end of the rental as it was made available by the first user at the start of the rental and only the capacity of the energy storage is actually rented out during the rental period, or the user can, for example, also specify via the app , that the Energy storage should have a corresponding desired state of charge after the end of the rental, for example should be fully charged, or should be at least 50 percent charged or the like. The central data processing device can then accordingly control the charging of the energy store just after the end of the rental or at the end of the rental so that the energy store is charged as desired by the first user, so that the first user then finally finds his energy store again with the desired charge state.

Furthermore, the invention also relates to a computer program product for a central data processing device, the computer program product comprising commands which, when the computer program product is executed by a processor of the central data processing device, cause the central data processing device to do so, depending on a received input signal which indicates a user's wish to rent an energy store of a motor vehicle specified by the user to activate a rental function in the motor vehicle and to transmit at least one control signal for charging and / or discharging the energy store to the motor vehicle, depending on which of the energy stores under the first condition that the energy store of the motor vehicle is coupled to a power supply system , and under the second condition that the rental function is activated, at least partially loaded and / or unloaded.

Furthermore, the invention also relates to a computer program product for a terminal of a user, the computer program product comprising commands which, when the computer program product is executed by a processor of the terminal, causes the latter to send a signal to a specific central station as a function of an input made by the user on the terminal Send data processing device, in particular the above-described and described data processing device, which specifies the wish of a user to rent an energy store of a motor vehicle of the user and, depending on the input, activate a rental function in the motor vehicle, so that the energy store of the motor vehicle is dependent on at least one of the Motor vehicle received control signal for charging and / or discharging the energy store under the first condition that the energy store of the motor vehicle is coupled to a control signal, and u n the second requirement that the rental function is activated, at least partially loaded and / or unloaded.

Furthermore, the invention also relates to a motor vehicle with an energy store and a charger which can be coupled to the energy store and which is designed for bidirectional charging of the energy store, the motor vehicle furthermore having a control device which is designed to activate an activation signal for activating a rental function of the motor vehicle To rent the energy storage, to unlock the rental function depending on the received activation signal, to receive at least one control signal for charging and / or discharging the energy storage and the charger under the first condition that the energy storage of the motor vehicle is coupled to a power supply, and under the second prerequisite that the rental function is activated, in order to charge and / or discharge the energy storage device of the motor vehicle at least partially as a function of the at least one received control signal en.

The advantages mentioned for the method according to the invention and its refinements apply in the same way to the computer program product according to the invention for the central data processing device, the computer program product according to the invention for the end device of the user, and for the motor vehicle according to the invention.

In addition, the method steps described in connection with the method according to the invention and its refinements enable the further development of the computer program product according to the invention for the central data processing device, the computer program product according to the invention for the terminal device and the motor vehicle according to the invention by means of further corresponding objective features.

It is further preferred that the motor vehicle has an energy store with a capacity of at least 30 kilowatt hours. This is usually the case for energy storage devices in electric vehicles. However, the use of the described method and the design of the motor vehicle according to the invention as a hybrid vehicle is less preferred, since hybrid vehicles typically have energy stores with significantly lower capacities, which reduce the efficiency of the described method.

Particularly preferably, the energy store even has a capacity of at least 50 kilowatt hours.

The motor vehicle according to the invention is preferably used as a motor vehicle, in particular as Cars or trucks, or designed as a bus or motorcycle.

The invention also includes combinations of the features of the described embodiments.

• 1 eine schematische Darstellung eines Systems mit einem Kraftfahrzeug und einer zentralen Datenverarbeitungseinrichtung zur Umsetzung einer Vermietungsfunktion gemäß einem Ausführungsbeispiel der Erfindung; und
• 2 ein Ablaufdiagramm zur Veranschaulichung eines Verfahrens zum Vermieten eines Energiespeichers eines Kraftfahrzeugs gemäß einem Ausführungsbeispiel der Erfindung .

Exemplary embodiments of the invention are described below. This shows:

• 1 a schematic representation of a system with a motor vehicle and a central data processing device for implementing a rental function according to an embodiment of the invention; and
• 2nd a flowchart to illustrate a method for renting an energy storage device of a motor vehicle according to an embodiment of the invention.

The exemplary embodiments explained below are preferred embodiments of the invention. In the exemplary embodiments, the described components of the embodiments each represent individual features of the invention that are to be considered independently of one another and that further develop the invention independently of one another. Therefore, the disclosure is intended to include combinations of the features of the embodiments other than those shown. Furthermore, the described embodiments can also be supplemented by further features of the invention that have already been described.

In the figures, the same reference numerals designate elements that have the same function.

1 shows a schematic representation of a system 10th with a motor vehicle 12th and a central data processing device 14 for implementing a rental function according to an embodiment of the invention. The car 12th represents the motor vehicle 12th of a first user 16 The motor vehicle 12th has an energy storage 18th , for example in the form of a high-voltage battery. In addition, the motor vehicle includes 12th one with the energy storage 18th coupled charger 20 , which is used for bidirectional charging of the energy storage 18th is designed. This means that when the energy storage is coupled 18th with a power grid 22 , for example by connecting the charger 20 with an electrical outlet 24th or a wallbox via a charging cable 26 , from the mains 22 Energy for charging the energy storage 18th can be obtained, and vice versa also energy from the energy storage 18th via the charger 20 into the power grid 22 can be fed. This charging and discharging of the energy storage 18th can by appropriate control of the charger 20 by a control device 28 of the motor vehicle 12th respectively.

Energy storage devices of motor vehicles are typically unused for a long time per day, since motor vehicles, in particular electric vehicles, are typically not driven all day. Often such vehicles are even longer, for example over the weekend or when a user or owner is on vacation. The efficiency of use of the built-in energy storage is therefore very low.

• Möchte der erste Benutzer 16 seinen Energiespeicher 18 für einen bestimmten Mietzeitraum beziehungsweise Vermietungszeitraum vermieten, während welchem er den Energiespeicher 18 ohnehin nicht nutzen würde, zum Beispiel weil er in Urlaub fährt oder ähnliches, so kann er eine Vermietungsfunktion aktivieren. Dies kann der Benutzer 16 vorteilhafterweise über ein geeignetes Anwendungsprogramm 30 bewirken. Ein solches Anwendungsprogramm 30 kann zum Beispiel auch einem dem Benutzer 16 zugeordneten Endgerät, wie zum Beispiel ein mobiles Kommunikationsgerät 32, installiert sein. Zusätzlich oder alternativ kann ein solches Anwendungsprogramm 30 auch im Kraftfahrzeug 12 selbst, zum Beispiel durch die Steuereinrichtung 28 oder eine weitere Steuerungseinrichtung des Kraftfahrzeugs 12 ausgeführt werden. Über dieses Anwendungsprogramm 30 ist eine Kommunikation mit der zentralen Datenverarbeitungseinrichtung 14 möglich. Insbesondere kann der Benutzer beispielsweise eine geeignete Eingabe an dem mobilen Kommunikationsgerät 32 tätigen, um seinen Wunsch zum Vermieten des Energiespeichers 18 zu signalisieren. Dieser Wunsch wird durch ein entsprechendes Signal E an die zentrale Datenverarbeitungseinrichtung 14 übermittelt, welches von dieser als Empfangssignal E empfangen wird. Durch dieses Signal E kann zusätzlich durch den Benutzer 16 auch ein gewünschter Vermietungszeitraum spezifiziert sein. Die zentrale Datenverarbeitungseinrichtung 14 kann im Allgemeinen einen Cloud-Server darstellen, und zum Beispiel von einem bestimmten Serviceprovider bereitgestellt sein. Dieser Serviceprovider kann dann entsprechend die Vermittlung und Verteilung der zu vermietenden Energiespeicher 18 übernehmen. So können sich andere Interessenten, wie der hier dargestellte zweite Benutzer 34 ebenfalls an der zentralen Datenverarbeitungseinrichtung 14 anmelden und zum Beispiel entsprechend spezifizieren, dass das Bedürfnis nach dem Mieten eines Energiespeichers 18 für einen bestimmten Zeitraum gewünscht ist. Dieser zweite Benutzer 34 kann dabei beispielsweise eine Privatperson darstellen, ein Unternehmen, sowie beispielsweise auch ein Netzbetreiber beziehungsweise Stromversorger selbst. Darüber hinaus kann der zweite Benutzer 34 von der Datenverarbeitungseinrichtung sowie vom Kraftfahrzeug 12 räumlich bzw. örtlich getrennt sein, da die Datenverarbeitungseinrichtung 14 über das Internet angebunden ist und somit über das Internet mit einem geeigneten Endgerät des zweiten Benutzers 34 kommunikativ koppelbar ist, sowie auch wie mit dem Kraftfahrzeug 12 und/oder dem mobilen Endgerät 32 des ersten Benutzers 16. Die zentrale Datenverarbeitungseinrichtung 14 kann dann die entsprechenden Daten abgleichen und dann zum Beispiel den für den gewünschten Vermietungszeitraum bereitstehenden Energiespeicher 18 dem zweiten Benutzer 34 für diesen Vermietungszeitraum zuordnen. Während des Vermietungszeitraums kann dann vorteilhafterweise dieser zweite Benutzer 34 über eine Vorrichtung 36, welche dem zweiten Benutzer 34 zugeordnet ist, wie zum Beispiel ein Kraftwerk, eine Photovoltaikanlage eines Privathaushalts, ein elektrischer Verbraucher, oder ähnliches, einerseits Energie am Stromnetz 22 bereitstellen, welche über das Stromnetz 22 in den Energiespeicher 18 geladen wird, und umgekehrt kann auch aus dem Energiespeicher 18 über das Stromnetz 22 Energie der Vorrichtung 36 zugeführt werden. Um die Vermietung letztendlich zu autorisieren, kann zum Freischalten dieser Vermietungsfunktion im Kraftfahrzeug 12 zunächst ein entsprechendes Freischaltungssignal F an das Kraftfahrzeug beziehungsweise die Steuereinrichtung 28 des Kraftfahrzeugs 12 übermittelt werden. Dieses Freischaltungssignal F kann beispielsweise von der zentralen Datenverarbeitungseinrichtung 14 nach Empfang des Eingangssignals E an die Steuereinrichtung 28 des Kraftfahrzeugs 12 übermittelt werden oder dieses Freischaltungssignal kann auch direkt vom Anwendungsprogramm 30, zum Beispiel des Anwendungsprogramms 30 welches ohne im Kraftfahrzeug installiert ist, direkt an die Steuereinrichtung 28 des Kraftfahrzeugs übermittelt werden. Mit anderen Worten kann der Benutzer 16 also zum Beispiel auch einfach einen Knopf oder eine andere Bedieneinrichtung des Kraftfahrzeugs 12 betätigen, zum Beispiel einen geeigneten Menüpunkt an einem Touchscreen des Kraftfahrzeugs 12 auswählen, um so die Vermietungsfunktion im Kraftfahrzeug freizuschalten. Diese Freischaltung betrifft dabei insbesondere den durch den Benutzer 16 über seine Eingabe spezifizierten Vermietungszeitraum. Nur innerhalb dieses Vermietungszeitraums ist es dann entsprechend möglich, dass die zentrale Datenverarbeitungseinrichtung 14 weiterhin ein Steuersignal S an die Steuereinrichtung 28 des Kraftfahrzeugs übermittelt, welches zum Beispiel spezifiziert, dass durch den Energiespeicher 18 nun Energie in das Netz 22 eingespeist werden soll, oder welches spezifiziert, dass nun durch den Energiespeicher 18 Energie aus dem Netz 22 geladen werden soll, sodass die Steuereinrichtung 28 dann entsprechend dieses Steuersignals S das Ladegerät ansteuert, um diesen Steuerbefehl entsprechend umzusetzen und den Energiespeicher 18 entsprechend dieses Steuersignals S entweder zu laden und/oder zu entladen. Diese Vorgehensweise wird nun anhand des Ablaufdiagramms in 2 näher erläutert.

This can now advantageously be avoided by the invention and its configurations and the efficiency of the use of such an energy store 18th significantly increase the energy storage by providing a particularly advantageous possibility 18th for rent. This can be done as follows:

• Would like the first user 16 its energy storage 18th for a certain rental period or rental period during which he is the energy storage 18th would not use anyway, for example because he is going on vacation or something similar, he can activate a rental function. The user can 16 advantageously via a suitable application program 30th cause. Such an application program 30th can, for example, also to the user 16 assigned terminal, such as a mobile communication device 32 , be installed. Such an application program can additionally or alternatively 30th also in the motor vehicle 12th itself, for example by the control device 28 or a further control device of the motor vehicle 12th be carried out. About this application program 30th is a communication with the central data processing device 14 possible. In particular, the user can, for example, make a suitable entry on the mobile communication device 32 make his wish to rent the energy storage 18th to signal. This request is made by a corresponding signal E to the central data processing device 14 transmitted, which is received by this as a reception signal E. This signal E can also be used by the user 16 a desired rental period can also be specified. The central data processing facility 14 can generally represent a cloud server and, for example, be provided by a specific service provider. This service provider can then mediate and distribute the energy storage to be rented 18th take over. So other interested parties, like the second user shown here 34 also at the central data processing device 14 register and, for example, specify accordingly that the need for renting an energy storage 18th is desired for a certain period of time. This second user 34 can represent, for example, a private person, a company, and also, for example, a network operator or electricity supplier itself. In addition, the second user can 34 from the data processing device and from the motor vehicle 12th be spatially or spatially separate, since the data processing device 14 is connected via the Internet and thus via the Internet with a suitable end device of the second user 34 is communicatively coupled, as well as with the motor vehicle 12th and / or the mobile terminal 32 of the first user 16 . The central data processing facility 14 can then compare the corresponding data and then, for example, the energy storage available for the desired rental period 18th the second user 34 assign for this rental period. This second user can then advantageously during the rental period 34 via a device 36 which the second user 34 assigned, for example a power plant, a photovoltaic system of a private household, an electrical consumer, or the like, on the one hand energy on the power grid 22 deploy which over the mains 22 in the energy storage 18th is charged, and vice versa can also from the energy storage 18th via the power grid 22 Device energy 36 are fed. To ultimately authorize the rental, you can activate this rental function in the motor vehicle 12th first a corresponding activation signal F to the motor vehicle or the control device 28 of the motor vehicle 12th be transmitted. This activation signal F can, for example, from the central data processing device 14 after receiving the input signal E to the control device 28 of the motor vehicle 12th or this activation signal can also be transmitted directly from the application program 30th , for example the application program 30th which is installed without in the motor vehicle, directly to the control device 28 of the motor vehicle are transmitted. In other words, the user 16 thus, for example, simply a button or another control device of the motor vehicle 12th press, for example a suitable menu item on a touchscreen of the motor vehicle 12th Select to activate the rental function in the motor vehicle. This activation particularly affects that by the user 16 via his entry specified rental period. It is then only possible within this rental period that the central data processing device 14 still a control signal S to the control device 28 of the motor vehicle, which specifies, for example, that by the energy storage 18th now energy into the network 22 should be fed, or which specifies that now through the energy storage 18th Energy from the grid 22 should be loaded so that the control device 28 then according to this control signal S controls the charger to implement this control command accordingly and the energy storage 18th according to this control signal S either to load and / or to unload. This procedure is now shown in the flow chart in 2nd explained in more detail.

2nd shows a flowchart to illustrate a method for renting an energy store 18th a motor vehicle 12th of a user 16 according to an embodiment of the invention. The process starts in step S10 , in which the user makes an entry on a mobile communication device 32 makes a request to rent the energy storage 18th the central data processing device 14 to communicate. The user specifies this entry 16 a desired rental period at the same time. This entered data is then correspondingly in step S12 transmitted to the central data processing device. The central data processing device can, for example, in step S14 check if there are other users 34 there that a rental of energy storage 18th during by the user 16 specified rental period would be interested, and if so, the central data processing device 14 the energy storage 18th this interested other user 34 in step S16 to. Then continue in step S18 , in particular also depending on the user input, the rental function in the motor vehicle 12th , specifically for the user 16 specified rental period, activated. The central data processing device now transmits during the rental period 14 depending on by the second user 34 specified specifications control signals S to the motor vehicle 12th in step S20 , the motor vehicle 12th or the control device 28 of the motor vehicle 12th then the charger 20 of the motor vehicle 12th according to the control signal S drives to the energy storage 18th in step S22 to load and / or unload. However, two conditions must be fulfilled for this, the step S24 and S26 be checked beforehand. The first step is S24 checked whether the energy storage 18th With the power grid 22 is coupled. If this is the case, the step S26 checks whether the rental function is activated.

This is the case, for example, if the current time falls within the specified rental period and not otherwise. For example, in step S24 found that the motor vehicle 12th not with the power grid 22 is coupled, the procedure in step S28 canceled and / or alternatively the user 16 via a corresponding message, for example via his mobile communication device 32 informed. For example, in step S26 If the current time is not yet within the specified rental period, the check in step S26 repeated until the current time is finally within the rental period, and then the energy storage 18th in step S22 according to the control signals S loaded and / or unloaded accordingly. However, in step S26 determined that the rental period has now expired or ended, the procedure in step S30 also ended. Correspondingly, in step can also during corresponding charging and / or discharging cycles S22 or after step S22 be checked again and again whether you are still within the specified rental period. The energy storage 18th can then as long depending on the control signals S be loaded and / or unloaded as long as you are within the specified rental period. If this has finally expired, the method is described in step S30 completed.

Overall, the examples show how the invention provides a rental function for energy storage devices for storing electrical energy, which enables a user to rent his battery vehicle as an electrical energy storage device for a specific time in a particularly simple and advantageous manner. The payment for the rental can then be made, for example, using money or, for example, bonus kilowatt hours during the next charging process. There are only a few prerequisites for implementing the procedure. The motor vehicle preferably has an energy store with a certain minimum capacity, for example at least 30 kilowatt hours. The vehicle can also include, for example, an energy store with a capacity of 95 kilowatt hours. In addition, the motor vehicle is equipped with a bidirectional charging function, in particular for charging with alternating current and / or direct current. Furthermore, a communication option with a central data processing device should be provided, for example a connection to the “myAudi” backend via the Internet. In addition, the charging plug of the motor vehicle must be plugged into the infrastructure, in particular the power grid, over the rental period. Furthermore, the rental function can simply be activated, which then unlocks the functionality of the rental for the desired rental period.

This allows an additional customer benefit from the point of view of the user who, for example, can rent his vehicle as an electrical storage device during his three-week vacation and thus earn money. Furthermore, the customer without an electric vehicle is able to earn money on an electricity exchange by renting the electrical storage and thus temporarily storing energy. There is also a business area for major customers who have a fleet of electric vehicles. These can be rented out as electrical buffer storage at the weekend, for example, when they are on the factory premises. At 10th Vehicles with 95 kilowatt hours each can thus be provided with a total capacity of 950 kilowatt hours. Overall, the efficiency of using an energy storage device and thus the efficiency of an electric vehicle can be significantly increased.

QUOTES INCLUDE IN THE DESCRIPTION

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Patent literature cited

• US 2014/0077766 A1 [0003]
• DE 102009028500 A1 [0004]
• EP 3335925 A1 [0004]

Claims (10)

Method for renting an energy store (18) of a motor vehicle (12) from a first user (16) to a second user (34), - an input signal (E) is received from a central data processing device (14) as a function of an input made by the first user (16) and specifies the request of the first user (16) to rent the energy store (18); - A rental function in the motor vehicle (12) is activated as a function of the input; - At least one control signal (S) for charging and / or discharging the energy store (18) is transmitted to the motor vehicle (12); and - The energy store (18) under the first condition that the energy store (18) of the motor vehicle (12) is coupled to a power supply (22), and under the second condition that the rental function is activated, depending on the at least one Control signal (S) is at least partially loaded and / or discharged. Procedure according to Claim 1 The central data processing device (14) assigns the energy store (18) to the at least one second user (34) as a function of the received input signal (E), energy being provided by a device (36) of the second user (34) when the rental function is activated , which is loaded into the energy store (18) via the power network (22), and / or is drawn from the energy store (18) by a device (36) of the second user (34) via the power network (22). Method according to one of the preceding claims, wherein the input signal (E) dependent on the input made by the first user (16) additionally specifies a specific, future rental period for renting the energy store (18), and wherein the rental function only during the specified determined rental period is unlocked. Procedure according to Claim 3 , whereby the rental function is only activated if the rental period is at least half a day. Method according to one of the preceding claims, wherein the rental function is activated independently of a current state of charge of the energy store (18). Method according to one of the preceding claims, wherein the charging and / or discharging of the energy store (18) is controlled such that a state of charge of the energy store (18) after the end of the rental is the same as at the start of the rental, or the state of charge of the energy store ( 18) after the end of the rental corresponds to a final charge state specified by the user (16) by the input made. Computer program product for a central data processing device (14), the computer program product comprising commands which, when the computer program product is executed by a processor, causes the central data processing device (14) to: - depending on a received input signal (E), which specifies the wish of a user (16) to rent an energy store (18) of a motor vehicle (12) of the user (16), to activate a rental function in the motor vehicle (12); and - To transmit at least one control signal (S) for charging and / or discharging the energy store (18) to the motor vehicle (12), depending on which of the energy stores (18) under the first condition that the energy store (18) of the motor vehicle ( 12) is coupled to a power network (22), and under the second condition that the rental function is activated, is at least partially charged and / or discharged. Computer program product (30) for a user terminal (16), the computer program product (30) comprising commands which, when the computer program product (30) is executed by a processor of the terminal, causes the processor to: - Depending on an input made by the user (16) on the terminal, to send a signal (E) to a specific central data processing device (14), which indicates the wish of the user (16) to rent an energy store (18) of a motor vehicle (12) specified by the user (16); and - Depending on the input, to activate a rental function in the motor vehicle (12), so that the energy store (18) of the motor vehicle (12) is dependent on at least one control signal (S) received by the motor vehicle (12) for charging and / or discharging the Energy store (18) is at least partially charged and / or discharged under the first condition that the energy store (18) of the motor vehicle (12) is coupled to a power network (22) and under the second condition that the rental function is activated . Motor vehicle (12) with an energy store (18) and a charger which can be coupled to the energy store (18) and which is designed for bidirectional charging of the energy store (18), wherein the motor vehicle (12) further has a control device (28) which is designed to receive an activation signal (F) for activating a rental function of the motor vehicle (12) for renting the energy store (18), - the rental function as a function of the activation signal received (F) unlock; - to receive at least one control signal (S) for charging and / or discharging the energy store (18); and - the charger (10) under the first condition that the energy store (18) of the motor vehicle (12) is coupled to a power network (22) and under the second condition that the rental function is enabled to control the energy store ( 18) of the motor vehicle (12) depending on the at least one received control signal (S) to charge and / or discharge at least in part. Motor vehicle (12) after Claim 9 , wherein the energy store (18) has a capacity of at least 30 kilowatt hours.

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