CN117584799A

CN117584799A - Method for charging a drive battery of an electric motor vehicle

Info

Publication number: CN117584799A
Application number: CN202311013984.2A
Authority: CN
Inventors: R·尼科迪默斯; S·诺德布鲁赫
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2022-08-12
Filing date: 2023-08-11
Publication date: 2024-02-23
Also published as: DE102022208414A1

Abstract

The invention relates to a method for charging a drive battery of an electric motor vehicle, comprising the following steps: a charging location is determined for a charging vehicle comprising an electrical energy store, at which the charging vehicle can be parked; instructing the charged vehicle to travel to the determined charging location; receiving a task of charging a driving battery of the electric motor vehicle; transmitting the position of the determined charging location to the electric vehicle; after the electric vehicle and the charging vehicle reach the charging location, a charging process of the drive battery of the electric vehicle is automatically controlled, wherein the charging process comprises charging the drive battery by means of an energy store of the charging vehicle. The invention further relates to a device, a system for charging a drive battery of an electric motor vehicle, a computer program and a machine-readable storage medium.

Description

Method for charging a drive battery of an electric motor vehicle

Technical Field

The invention relates to a method and a system for charging a drive battery of an electric motor vehicle, to a device, to a computer program and to a machine-readable storage medium.

Background

Publication US2011/0025267 A1 discloses a system for charging a drive battery of a vehicle.

Publication WO 2021/122650 A1 discloses a charging system.

Publication WO 2021/219669 A1 discloses a method for providing electrical energy.

Publication WO 2020/074953 A2 discloses a method for providing an electric vehicle with a renewable energy source.

Disclosure of Invention

The object on which the invention is based is to provide a solution for efficiently charging the drive battery of an electric motor vehicle.

According to a first aspect, there is provided a method for charging a drive battery of an electric motor vehicle, the method comprising the steps of:

a charging location is determined for a charging vehicle comprising an electrical energy store, at which the charging vehicle can be parked;

instructing/commanding (Beauftragen) the charging vehicle to travel to the determined charging location;

receiving a task of charging a driving battery of the electric motor vehicle;

transmitting the position of the determined charging location to the electric vehicle;

after the electric vehicle and the charging vehicle reach the charging location, a charging process of the drive battery of the electric vehicle is automatically controlled, wherein the charging process comprises charging the drive battery by means of an energy store of the charging vehicle.

According to a second aspect, a device is provided which is set up for carrying out all the steps of the method according to the first aspect.

According to a third aspect, there is provided a system for charging a drive battery of an electric motor vehicle, the system comprising:

a charging vehicle including an electric energy storage; and

the apparatus according to the second aspect.

According to a fourth aspect, there is provided a computer program comprising instructions which, when executed by a computer (e.g. by an apparatus according to the second aspect and/or by a system according to the third aspect), cause the computer to carry out a method according to the first aspect.

According to a fifth aspect, there is provided a machine readable storage medium having stored thereon a computer program according to the fourth aspect.

The present invention is based on and comprises the following recognition: a charging vehicle is used to charge a drive battery of an electric motor vehicle, the charging vehicle comprising an electric energy storage. The drive battery of the electric motor vehicle is charged by means of the electrical energy store. The following technical advantages are achieved in particular with such a charging vehicle: the charging of the drive battery of the electric motor vehicle can be carried out independently of a fixedly mounted charging station, for example a charging post. Thus, for example, the drive battery of an electric motor vehicle can be charged even if no charging station is present in the surroundings of the electric motor vehicle.

Furthermore, it is therefore advantageously no longer necessary to install a charging station in a manner covering the field in order to charge the drive battery of the electric motor vehicle. Because, for example, for areas where it is not worthwhile to install charging stations for economic reasons, the solution described here makes it possible to charge the drive battery of an electric motor vehicle using a charging vehicle or a plurality of charging vehicles each comprising an electrical energy store.

In addition, the drive battery of such an electric vehicle can also be charged: the owner of the electric motor vehicle does not have his own electrical connection for charging the drive battery. Such an electrical connection is, for example, a so-called Wall Box (Wall Box). If, for example, the vehicle owner is in a rental housing, in the underground garage of which there is no possibility to charge the drive battery of the vehicle owner's electric vehicle, the following possibilities exist according to the solution described here: the drive battery is charged in the case of using the charge vehicle. For this purpose, the charging vehicle can be parked, for example, in the surroundings of the rental housing. The vehicle owner can drive his motor vehicle to the charging vehicle, or the motor vehicle can drive to the charging vehicle, for example, without a driver, in particular highly automatically or fully automatically.

By automatically controlling the charging process, the following technical advantages are achieved, for example: the drive battery can be charged efficiently and simply.

In summary, the following technical advantages are achieved in particular: a solution for efficiently charging a drive battery of an electric motor vehicle is provided.

The drive battery, in particular the accumulator, which is especially intended to supply the electric motor responsible for propulsion of the electric motor vehicle with electrical energy, can also be referred to as a high-voltage accumulator, traction battery or circulation battery.

In one embodiment, the charging vehicle is a motor vehicle, such as a truck, for example a truck. According to one embodiment, the charging vehicle is an aircraft, such as an unmanned aerial vehicle, i.e. an unmanned aircraft.

In one embodiment of the method, the task is received before the determination of the charging location in time, so that the determination of the charging location is based on the task.

The following technical advantages are thus achieved, for example: the charging location can be efficiently obtained.

In one embodiment of the method, the charging location is determined independently of the task.

The following technical advantages are thus achieved, for example: the charging location can be efficiently obtained. In particular, the following technical advantages are achieved thereby: the charging location can be determined independently of the time point at which the task of charging the drive battery of the electric motor vehicle is received.

This means in particular that the determination of the charging point can be performed temporally before the task of charging the drive battery of the electric motor vehicle is received. Thus, for example, when a task is received to charge the drive battery of an electric motor vehicle, the charging location has been determined. For example, it can be provided that the charging point is determined in time after the task of charging the drive battery of the electric motor vehicle is received, independently of the received task.

This means in particular that in embodiments in which the charging point is determined independently of the task, the time sequence of the step of determining the charging point and the step of receiving the task is irrelevant, since the determination of the charging point is performed independently of the task of charging the drive battery of the electric motor vehicle.

In contrast, if the charging point should be determined based on a task for charging the drive battery of the electric motor vehicle, the task must first be received before the charging point can be determined accordingly.

In the case of task-independent determination of a charging location, the determined charging location may also be referred to as a determined or predetermined charging location.

In one embodiment, the task is to indicate a current and/or future electric vehicle position, wherein the charging location is determined based on the current and/or future vehicle position.

The following technical advantages are thus achieved, for example: the charging location can be efficiently obtained. For example, the charging location is determined such that it is located in the surroundings of the current or future motor vehicle location. By "in the surroundings" is meant, for example, a maximum distance of 1 km, for example 500 m, for example 250 m, for example 100 m, from the respective motor vehicle location.

In one embodiment of the method, it is provided that a route from the current and/or future vehicle position to the determined charging location is determined in each case, so that an infrastructure-supported assistance can be provided for the electric vehicle along the route for driving along the route, wherein the respectively determined route is transmitted to the electric vehicle, wherein the electric vehicle is correspondingly assisted at least in part by the infrastructure support when the electric vehicle is driving along the respectively determined route.

The following technical advantages are thus achieved, for example: the electric vehicle can travel to the determined charging location with high efficiency.

The driving of the electric motor vehicle includes, for example, at least partially automated driving and/or manually guided driving.

In the case of manual driving of a motor vehicle, the motor vehicle is guided manually by the driver of the electric motor vehicle. The electric motor vehicle is guided at least partially automatically, while the electric motor vehicle is driven at least partially automatically.

An at least partially automated guidance of the motor vehicle means in particular that the transverse guidance and/or the longitudinal guidance of the motor vehicle is controlled at least partially automatically.

The expression "at least partially automated guidance" includes one or more of the following: assisted guidance, partially automated guidance, highly automated guidance, fully automated guidance. That is, the expression "at least partially automated" includes one or more of the following: assisted, partially automated, highly automated, fully automated.

By assisted guidance is meant that the driver of the motor vehicle is constantly conducting either a lateral or longitudinal guidance of the motor vehicle. A corresponding further driving task, i.e. the control of the longitudinal or transverse guidance of the motor vehicle, is automatically performed. That is to say, when the motor vehicle is guided in an assisted manner, either the transverse guidance or the longitudinal guidance is automatically controlled.

By partially automated guidance is meant that the longitudinal and transverse guidance of the motor vehicle is automatically controlled in certain situations (e.g. driving on a highway, driving in a parking lot, exceeding an object, driving in a lane determined by lane markings) and/or for certain time periods. The driver of the motor vehicle does not have to manually control the longitudinal and transverse guidance of the motor vehicle himself. However, the driver must continuously monitor the automatic control of the longitudinal and transverse guidance in order to be able to intervene manually when required. The driver must be ready to take over the vehicle guidance completely.

Highly automated guidance means that the longitudinal and transverse guidance of the motor vehicle is automatically controlled in specific situations (e.g. driving on a highway, driving in a parking space, exceeding objects, driving in a lane defined by lane markings) over a certain period of time. The driver of the motor vehicle does not have to manually control the longitudinal and transverse guidance of the motor vehicle himself. The driver does not have to constantly monitor the automatic control of the longitudinal and transverse guidance in order to be able to intervene manually when required. If necessary, a take-over request is automatically output to the driver in order to take over the control of the longitudinal and transverse guidance, in particular with a sufficient time margin. That is, the driver must potentially be able to take over control of the longitudinal and lateral guidance. The limits of automatic control of the lateral guidance and the longitudinal guidance are automatically identified. In the case of highly automated guidance, it is not possible to automatically reach a state of least risk in any initial situation.

Fully automated guidance means that the longitudinal and transverse guidance of the motor vehicle is automatically controlled in certain situations (e.g. driving on highways, in parking lots, over objects, in lanes determined by lane markings). The driver of the motor vehicle does not have to manually control the longitudinal and transverse guidance of the motor vehicle himself. The driver does not have to monitor the automatic control of the longitudinal and transverse guidance in order to be able to intervene manually when required. Before the automatic control of the transverse and longitudinal guidance is completed, the request to the driver for taking over the driving task (control of the transverse and longitudinal guidance of the motor vehicle) is automatically effected, in particular with a sufficient time margin. If the driver does not take over the driving task, the state is automatically returned to the state in which the risk is minimum. The limits of automatic control of the lateral guidance and the longitudinal guidance are automatically identified. In any case, it is possible to automatically return to the system state with the least risk.

In one embodiment, provision is made for the infrastructure-supported assistance to include determining infrastructure assistance data, which is transmitted to the electric vehicle, wherein the infrastructure assistance data includes one or more of the following data: control commands for controlling at least partially automatically the lateral guidance and/or the longitudinal guidance of an electric motor vehicle; for at least partly automating remoteRemote control commands for controlling the lateral guidance and/or the longitudinal guidance of the electric motor vehicle; approval instructions for approving/authorizing/releasing (freecabe) at least partially automated travel of the electric vehicle along the route; approval instructions for approving at least partially automated travel of the electric vehicle along the section of the route; the portion of the electric motor vehicle that is guided along the section of the route should be traced; due track for guiding an electric vehicle along an entire route; ambient data representative of the ambient of the electric vehicle; what the electric motor vehicle should do; operating advice for an electric motor vehicle; the actual position of the electric vehicle; an object list indicating objects in the surroundings of the electric motor vehicle; indicating at least one location in the surroundings of an electric motor vehicle A vacancy/free space (Freiraum) recognition result of the corresponding occupancy state of the (c).

The following technical advantages are thus achieved, for example: the electric vehicle can be efficiently assisted by the infrastructure support.

In one embodiment of the method, a charging location is determined at which the electric vehicle can be at least partially assisted by the infrastructure, such that the electric vehicle is at least partially assisted by the infrastructure after reaching the charging location.

In one embodiment of the method, the infrastructure-supported assistance comprises determining infrastructure assistance data, which is transmitted to the electric vehicle, wherein the infrastructure assistance data comprises one or more of the following data: control commands for controlling at least partially automatically the lateral guidance and/or the longitudinal guidance of an electric motor vehicle; remote control instructions for at least partially automatically remotely controlling lateral guidance and/or longitudinal guidance of an electric motor vehicle; approval instructions for approving at least partially automated travel of the electric vehicle at the charging site; approval instructions for approving an at least partially automated travel of an electric vehicle along an intended trajectory for the electric vehicle leading to a charging vehicle, in particular a section of the intended trajectory; ambient data representative of the ambient of the electric vehicle; what the electric motor vehicle should do; operating advice for an electric motor vehicle; the actual position of the electric vehicle; an object list indicating objects in the surroundings of the electric motor vehicle; and a vacancy recognition result indicating a corresponding occupancy state of at least one site in the surroundings of the electric motor vehicle.

Embodiments relating to infrastructure-supported assistance to an electric vehicle along the route are applicable in a similar manner to infrastructure-supported assistance to an electric vehicle at a charging site and vice versa.

For example, provision is made for control signals for at least partially automatically controlling the transverse guidance and/or the longitudinal guidance of the electric motor vehicle to be generated and output on the basis of the infrastructure assistance data.

For example, the method comprises the following explicit steps: the lateral guidance and/or the longitudinal guidance of the electric motor vehicle is controlled at least partially automatically on the basis of the output control signal.

In one embodiment of the method, provision is made for the determination, in the case of an at least partially automated electric motor vehicle, to be made: whether the electric vehicle should be assisted by the infrastructure during the travel of the electric motor vehicle to the charging location and/or during the travel of the electric motor vehicle at the charging location, and if so to what extent (Umfang) the electric motor vehicle should be assisted by the infrastructure, wherein the assistance of the electric motor vehicle supported by the infrastructure is carried out on the basis of the result of the determination.

The following technical advantages are thus achieved, for example: the infrastructure-supported assistance of the motor vehicle can be performed efficiently. For example, it is possible that no infrastructure-supported assistance of the electric vehicle is required and/or that the electric vehicle should not be assisted by infrastructure. In such a case, the electric vehicle is assisted unsupported by the infrastructure. This means, for example, that no infrastructure assistance data is determined.

In one embodiment of the method, it is provided that, based on the result of determining whether the electric vehicle should be assisted by the infrastructure during the travel of the electric vehicle to the charging location and/or during the travel of the electric vehicle at the charging location, and if so to what extent the electric vehicle should be assisted by the infrastructure, a route is determined from the current and/or future vehicle position to the determined charging location, respectively, such that the electric vehicle can be provided with infrastructure-assisted assistance along the route at least in part for traveling along the route, wherein the respectively determined route is transmitted to the electric vehicle, wherein the electric vehicle is correspondingly assisted by the infrastructure at least in part when the electric vehicle travels along the respectively determined route. This means, in particular, that a corresponding route is not determined until the result of the determination indicates that the electric motor vehicle should be assisted by the infrastructure during the travel of the electric motor vehicle to the charging point and/or during the travel of the electric motor vehicle at the charging point. Otherwise, for example, no such corresponding route is found.

In one embodiment of the method, the following is performed on the basis of the availability of the infrastructure-supported assistance and/or on the basis of the load factor of the infrastructure-supported assistance and/or on the basis of the degree of automation of the electric motor vehicle and/or on the basis of the "whether the infrastructure-supported assistance is desired and/or has been paid or whether it has been promised that the infrastructure-supported assistance will be paid": whether and, if so, to what extent the electric vehicle should be assisted by the infrastructure during travel of the electric vehicle to the charging site and/or during travel of the electric vehicle at the charging site.

The following technical advantages are thus achieved, for example: the following can be efficiently performed: whether and, if so, to what extent the electric vehicle should be assisted by the infrastructure during travel of the electric vehicle to the charging site and/or during travel of the electric vehicle at the charging site.

In one embodiment of the method, the determining of the scale level comprises determining: which of the infrastructure assistance data is to be determined for the electric vehicle is to be determined, so that only the infrastructure assistance data determined accordingly is determined and transmitted to the electric vehicle in accordance with the determined scale level.

The following technical advantages are thus achieved, for example: the infrastructure-supported assistance of the motor vehicle can be performed efficiently.

The result of determining whether the electric vehicle should be assisted by the infrastructure during the travel of the electric vehicle to the charging location and/or during the travel of the electric vehicle at the charging location, and if so to what extent the electric vehicle should be assisted by the infrastructure, for example, indicates that no infrastructure-supported assistance of the electric vehicle and/or no infrastructure-supported assistance of the electric vehicle should be required.

The scale level indicates, for example, which of the above-mentioned infrastructure assistance data should be determined, so that the corresponding infrastructure assistance data is determined and transmitted to the electric vehicle.

For example, the expression "at least partially" includes the term "completely".

In one embodiment of the method, a digital map of the determined charging location is determined, which is transmitted to the electric vehicle.

The following technical advantages are thus achieved, for example: efficient navigation can be achieved at the determined charging location based on the digital map. For example, the electric motor vehicle can travel to the charging vehicle at the determined charging location at least in part automatically, in particular highly automatically or fully automatically, based on the digital map.

According to one embodiment, it is provided that, in the event of a task indicating a desired charging time and/or a desired charging interval and/or a desired charging date, a charging point is determined on the basis of the desired charging time and/or the desired charging interval and/or the desired charging date.

The following technical advantages are thus achieved, for example: the charging location can be efficiently obtained. Since the charging vehicle occupies the charging site corresponding to its site, the site is accordingly no longer available for other vehicles, for example for parking. The following sites exist: the location is not occupied, for example, at night or the location has a sufficiently free parking place. Such venues include, for example, shopping malls or supermarkets for parking lots. At night, such shopping centers or supermarkets are typically closed, such that the respective parking lots are usually rarely or even not occupied. Advantageously, such a location is particularly suitable for parking a charging vehicle. In this case, the drive battery of the electric vehicle can be charged overnight in an efficient manner, without the charging vehicle blocking or interfering with other vehicles.

This means that, for example, a supermarket or a parking lot of a shopping mall is selected as the charging site if, for example, the desired charging time is such that the drive battery can be charged reasonably only at night.

If, for example, the desired charging time is less than the predetermined maximum charging time setpoint, such a parking lot can still be selected for parking the charging vehicle, for example, also during the day, since the charging vehicle only has to be parked there within a certain time.

This generally means that, depending on the desired charging time and/or the desired charging interval and/or the desired charging date, different charging points are accordingly particularly suitable for parking the charging vehicle there in order to charge the drive battery of the electric motor vehicle, while other motor vehicles are not disturbed or hindered by the parked charging vehicle, for example, because fewer parking points are available for other motor vehicles due to the parked charging vehicle.

In one embodiment, the automatic control of the charging process comprises a control of the charging robot such that the charging robot establishes an electrical connection between the drive battery and the electrical energy store in order to charge the drive battery via the electrical connection.

The following technical advantages are achieved thereby, for example: the drive battery can be charged efficiently. Thus, it is no longer imperative that humans have to be responsible for establishing the electrical connection between the drive battery and the electrical energy store.

In one embodiment of the method, it is provided that the electric vehicle is driven to the charging location by at least partially, in particular completely, manually guided and/or by at least partially, in particular completely, at least partially automatically guided without infrastructure assistance.

The following technical advantages are thus achieved, for example: the electric motor vehicle can be guided efficiently.

If the electric vehicle is guided at least partially manually, it can be provided, for example, that the electric vehicle is guided at least partially automatically if the electric vehicle is not guided manually.

For example, the travel of the electric motor vehicle to the charging location is at least partially, in particular completely, at least partially automatically guided.

In the case of at least partially automatically guided driving, it may be provided, for example, that the electric motor vehicle is assisted at least partially, in particular completely, by the infrastructure.

In one embodiment of the method, it is provided that after the end of the charging process, the electric vehicle is assisted at least partially by the infrastructure when the vehicle is being driven further, in particular when the vehicle is driven back to its initial position, from which the electric vehicle is driven to the charging location.

The following technical advantages are thus achieved, for example: the electric motor vehicle can efficiently continue traveling.

For example, the travel of the electric vehicle to the charging location is an at least partially, in particular completely, manually guided travel.

The manually guided travel is performed, for example, by service personnel, in particular by service personnel of the system. For example, the manually guided travel is travel performed by a vehicle owner of the electric motor vehicle.

For example, the travel of the electric vehicle to the charging location includes an at least partially automated guided travel and/or an at least partially manually guided travel and/or an at least partially infrastructure supported travel.

Embodiments relating to the travel of an electric vehicle to a charging site are applicable in a similar manner to embodiments relating to the travel of an electric vehicle at a charging site and vice versa.

For example, the continued travel of the electric motor vehicle after the end of the charging process includes an at least partially automatically guided travel and/or an at least partially manually guided travel and/or an at least partially infrastructure-supported travel.

The following positions of an electric vehicle can be referred to as initial positions of the electric vehicle: from this location, the electric vehicle travels to the charging location.

After the end of the charging process, the electric vehicle can be driven back to the initial position or to another position.

For example, charging of the drive battery includes support for charging by a human, such as by a service person.

In one embodiment, the method is a computer-implemented method.

The respective technical functionalities of the device and/or of the system are derived in a similar manner from the respective technical functionalities of the method and vice versa. This means in particular that the device characteristics and/or the system characteristics are derived from the corresponding method characteristics and vice versa.

If "embodiment" is written generically, it should also be read as "an embodiment of the method" and/or "an embodiment of the device" and/or "an embodiment of the system" throughout.

The embodiments and examples described herein can be combined with each other in any manner, even if these combinations are not explicitly described.

In the sense of the present description, the step of transmitting and/or the step of receiving comprises transmitting and/or receiving, for example, over a communication network, in particular over a wireless communication network, for example a mobile radio network and/or a WLAN network.

In one embodiment, it is provided that a control signal is generated on the basis of the task, in particular on the basis of the determined charging location, for at least partially automatically controlling the transverse and/or longitudinal guidance of the charging vehicle, such that the charging vehicle travels at least partially automatically to the determined charging location when the charging vehicle is at least partially automatically controlled on the basis of the charging vehicle control signal. For example, the generated charge vehicle control signal is output. For example, the following steps are set: the lateral guidance and/or the longitudinal guidance of the charging vehicle is controlled at least partially automatically on the basis of the output charging vehicle control signal.

Thus, for example, the charging vehicle can be guided at least partially automatically to the charging location in an efficient manner.

The electrical energy storage comprises, for example, one or more storage batteries and/or one or more batteries.

Drawings

The invention is described in detail below with reference to preferred embodiments. Here, it is shown that:

FIG. 1 is a flow chart of a method for charging a drive battery of an electric motor vehicle;

the apparatus of fig. 2;

FIG. 3 is a system for charging a drive battery of an electric motor vehicle;

the machine-readable storage medium of FIG. 4; and

fig. 5 charges the vehicle.

Detailed Description

Fig. 1 shows a flow chart of a method for charging a drive battery of an electric motor vehicle, comprising the following steps:

a charging location is determined 101 for a charging vehicle comprising an electrical energy store, at which charging location the charging vehicle can be parked;

instructing 103 the charged vehicle to travel to the determined charging location;

receiving 105 a task to charge a driving battery of an electric motor vehicle;

transmitting 107 the determined position of the charging location to the electric vehicle;

after the electric vehicle and the charging vehicle have arrived at the charging site, a charging process of the drive battery of the electric vehicle is automatically controlled 109, wherein the charging process comprises charging the drive battery by means of an energy store of the charging vehicle.

In one embodiment, the step of charging the drive battery by means of an energy store of the charging vehicle is provided explicitly.

Fig. 2 shows a device 201 which is designed to carry out all the steps of a method for charging a drive battery of an electric motor vehicle.

Fig. 3 shows a system 301 for charging a drive battery of an electric motor vehicle.

The system 301 includes a charging vehicle 303 that includes an electrical energy storage 305. The charging vehicle 303 optionally comprises a charging robot 307, which is designed to establish an electrical connection between the drive battery of the electric motor vehicle and the electrical energy store 305 in order to charge the drive battery via the electrical connection.

Further, the system 301 includes the device 201 of fig. 2.

Fig. 4 shows a machine-readable storage medium 401 on which a computer program 403 is stored. The computer program 403 comprises instructions which, when the computer program 403 is implemented by a computer, cause the computer to implement a method for charging a drive battery of an electric motor vehicle.

Fig. 5 shows a charging vehicle 501, which comprises an electrical energy store 502 for charging a drive battery of an electric motor vehicle. The charging vehicle 501 is parked on a parking lot 503, which is located on a road 505.

At the edge of road 505, a plurality of vehicles are parked: first motor vehicle 507, second motor vehicle 509, third motor vehicle 511, fourth motor vehicle 513, fifth motor vehicle 515 and sixth motor vehicle 516.

The third motor vehicle 511 is an electric motor vehicle including a first drive battery 517. The fifth motor vehicle 515 is an electric motor vehicle that includes a second drive battery 519.

The first route of the charging vehicle 501 to the parking lot 503 is symbolically shown by a first dashed arrow with reference numeral 521.

For example, it is provided that the first drive battery 517 and/or the second drive battery 519 are charged by means of the energy store 502 of the charging vehicle 501 according to the scheme described here.

For this purpose, for example, it is provided that the third motor vehicle 511 travels from its parking position to, for example, at least partially automatically to the parking space 503 and travels there to, for example, at least partially automatically to the charging vehicle 501 on the basis of a second route 523 (which is symbolically shown by a second dashed arrow).

After reaching there, the first drive battery 517 is charged via the energy store 502, which is symbolically indicated by the two plug symbols with reference numerals 525, 527.

After charging the first drive battery 517, it is provided, for example, that the third motor vehicle 511 is returned, for example, at least automatically guided back to its initial parking position on the basis of a third path 529 (which is symbolically shown by a third dashed arrow), and is parked there again.

For example, it is provided that the fifth motor vehicle 515 travels in a similar manner, for example, at least automatically, to the charging vehicle 501 in order to charge the second drive battery 519 there using the energy store 502. Similarly, for example, it is provided that after the charging of the second drive battery 519 has ended, the fifth motor vehicle 515 is returned, for example at least automatically guided back into its initial parking position.

Alternatively, it may be provided, for example, that the third motor vehicle 511 and/or the fifth motor vehicle 515 do not travel back to the initial parking position after the end of the charging process, but rather travel to another position.

For example, it is provided that after the end of the charging of the first drive battery 517 or after the end of the charging of the second drive battery 519, the charging vehicle 501 leaves the parking space 503 on the basis of a fourth route 531 (which is symbolically shown by a fourth dashed arrow) and travels, for example, to a further charging location in order to charge the drive battery of the electric motor vehicle there.

Thus, according to the arrangement described herein, the charging site is for example a temporary charging site. In particular, the charging vehicle does not therefore remain permanently at the charging location, but leaves the charging location, for example after completion of a charging process or after completion of a plurality of charging processes.

In summary, the solution described herein is based in particular on the following: the charging vehicle, which includes the electrical energy store, travels to a temporary charging location and is parked there. The electric motor vehicle, which includes the drive battery, travels to the charging location, so that the drive battery of the electric motor vehicle can be charged by means of the energy store of the charging vehicle.

Thus, the charging vehicle is in particular a mobile charging station, in particular a traveling (fashrend) charging pile.

For example, it is set that charging of the drive battery is performed at night. This is particularly advantageous because electric vehicles are not required during the night, typically over a longer period of time. This is particularly advantageous because the venue is temporarily not needed at night, for example a shopping market or supermarket or a parking lot of a shopping mall. This is particularly advantageous because the energy store of the charging vehicle can be charged during the day, in particular with regenerated energy.

For example, it is set that the charging vehicle travels to a place that is not used at a desired charging time. I.e. the site is in this case a charging site. After reaching there, the drive battery of the electric motor vehicle can be charged. In particular, such an electric motor vehicle may be located, for example, parked in the surroundings of the charging site.

For example, a plurality of drive batteries of a plurality of electric vehicles are charged simultaneously.

Embodiments relating to one electric vehicle are similarly applicable to a plurality of electric vehicles and vice versa. This means in particular that if the singular is used for "electric motor vehicle", this is always to be interpreted as a plural number and vice versa.

For example, it is provided that the motor vehicle is driven manually, for example by a service person, to the determined charging location. For example, the drive battery is charged manually, for example by a service person.

For example, it is provided that the electric motor vehicle is driven manually back to the following point: the electric vehicle travels from the location to the determined charging location. Generally, manual driving is performed by, for example, service personnel.

For example, the electric motor vehicle is guided at least partially automatically, in particular highly automatically or fully automatically, to the determined charging location. In particular, the electric motor vehicle travels to the determined charging location without the driver. Similarly, this applies to backhaul to the following sites: the electric vehicle starts to travel from the location to the determined charging location. Here, it is also possible to provide, for example, a travel that is guided at least partially automatically, in particular highly automatically or fully automatically.

For example, an intermediate parking of the electric motor vehicle is provided until there is a charging point free at the charging vehicle.

For example, charging of a plurality of drive batteries of a plurality of electric vehicles is performed so that an optimal load factor (ausslaking) of a charging point of the charged vehicle is achieved. In this way, it is possible, for example, to realize an advantageous manner that a charging point is never idle as far as possible except for the following periods: during this time period, one electric vehicle leaves the charging point and the other electric vehicle travels to the charging point.

For example, the electrical connection between the drive battery and the energy store is performed manually, for example by a service person.

For example, the establishment of the electrical connection between the drive battery and the energy store is automatically performed by a charging robot, which is controlled in particular accordingly.

The establishment of the electrical connection comprises, for example, plugging in a cable.

For example, it is provided that the charging vehicle is driven manually to the determined charging location.

For example, it is provided that the charging vehicle is guided at least partially automatically to the determined charging location.

The advantage of the solution described here is, in particular, that, for example, no new charging stations have to be built and installed, so that the electric vehicle can be charged even at locations where no charging possibilities for the electric vehicle exist.

By "an electric vehicle can be provided with infrastructure-supported assistance at least partly along a route for the driving of the route" is meant, for example, that one or more spatially distributed surroundings sensors are arranged at least partly along the route, which surroundings sensors detect their respective surroundings and the output is based on the respective detected surroundings data, which describes the detected surroundings. Infrastructure assistance data is determined based on the ambient data, for example, the settings. For example, it is provided that a list of objects is determined on the basis of the surrounding data, which list of objects indicates the objects that are correspondingly present along the route. The infrastructure assistance data comprises, for example, such an object list. For example, it is provided that a vacancy recognition is performed on the basis of the surrounding environment data in order to identify free or unoccupied sites along the route. The corresponding result of the slot identification is included, for example, by the infrastructure assistance data.

Similarly, this can be applied to a charging site. This means that, for example, the following charging points are selected from a plurality of charging points: the charging site is able to achieve infrastructure-supported assistance for the electric vehicle at the charging site. This means, for example, that one or more spatially distributed ambient sensors are arranged at such a charging site, which ambient sensors detect their respective ambient environment and whose output is based on the respective detected ambient environment data, which describes the respective ambient environment. The above-described embodiments relating to infrastructure-supported assistance along a route apply in a similar manner to infrastructure-supported assistance at the charging site itself.

Thus, the following technical advantages are achieved in particular: the electric motor vehicle at the charging site itself can be supported by the infrastructure.

The terms "auxiliary" and "support" may be used synonymously.

Embodiments in terms of infrastructure assistance data related to infrastructure supported assistance along a route are similarly applicable to infrastructure supported assistance at a charging site and vice versa.

Claims

1. A method for charging a drive battery (517, 519) of an electric motor vehicle (511, 515), the method comprising the steps of:

a charging location (503) is determined (101) for a charging vehicle (303, 501) comprising an electrical energy store (305, 502), at which charging location the charging vehicle (303, 501) can be parked;

-instructing (103) the charging vehicle (303, 501) to travel to the determined charging location (503);

receiving (105) a task of charging a drive battery (517, 519) of an electric motor vehicle (511, 515);

-transmitting (107) the determined position of the charging site (503) to the electric vehicle (511, 515);

-automatically controlling (109) a charging process of a drive battery (517, 519) of the electric motor vehicle (511, 515) after the electric motor vehicle (511, 515) and the charging vehicle (303, 501) reach the charging site (503), wherein the charging process comprises charging the drive battery (517, 519) by means of an energy store (305, 502) of the charging vehicle (303, 501).

2. The method of claim 1, wherein the task is received prior in time to the determination of the charging location (503) such that the charging location (503) is determined based on the task.

3. The method according to claim 1, wherein the charging location (503) is determined independently of the task.

4. The method according to claim 2, wherein the task indicates a current and/or future electric vehicle position, wherein the charging location (503) is determined based on the current and/or future vehicle position.

5. The method according to claim 4, wherein a route is determined from the current and/or future vehicle position to the determined charging location (503) such that an infrastructure-supported assistance can be provided for the electric vehicle (511, 515) along the route for driving along the route, wherein the respective determined route is transmitted to the electric vehicle (511, 515), wherein the electric vehicle (511, 515) is correspondingly assisted at least partially under infrastructure support while the electric vehicle (511, 515) is driving along the respective determined route.

6. The method of claim 5, wherein the infrastructure-supported assistance comprises deriving infrastructure assistance data, the infrastructure assistance data being sent to the electric vehicle (511, 515), wherein the infrastructure assistance data comprises one or more of: control commands for controlling the lateral guidance and/or the longitudinal guidance of the electric motor vehicle (511, 515) at least in part automatically; remote control commands for at least partially automatically remotely controlling the lateral guidance and/or the longitudinal guidance of the electric motor vehicle (511, 515); approval instructions for approving at least partially automated travel of the electric motor vehicle (511, 515) along the route; approval instructions for approving at least partially automated travel of the electric motor vehicle (511, 515) along a section of the route; a portion of the electric vehicle (511, 515) guided along the section of the route should have a trajectory; -due trajectory for guiding the electric vehicle (511, 515) along the entire route; -ambient data representative of an ambient environment of the electric vehicle (511, 515); -defining what the electric vehicle (511, 515) should do; an operating recommendation for the electric motor vehicle (511, 515); -the actual position of the electric vehicle (511, 515); an object list indicating objects in the surroundings of the electric motor vehicle (511, 515); -a vacancy recognition result indicating a respective occupancy state of at least one site in the surroundings of the electric motor vehicle (511, 515).

7. The method according to any of the preceding claims, wherein the charging site (503) is found such that an infrastructure-supported assistance can be provided at the charging site (503) at least partially for the electric vehicle (511, 515) during travel at the charging site (503) such that the electric vehicle (511, 515) is at least partially infrastructure-supported assisted after reaching the charging site (503).

8. The method of claim 7, wherein the infrastructure-supported assistance comprises deriving infrastructure assistance data, the infrastructure assistance data being sent to the electric vehicle (511, 515), wherein the infrastructure assistance data comprises one or more of: control commands for controlling the lateral guidance and/or the longitudinal guidance of the electric motor vehicle (511, 515) at least in part automatically; remote control commands for at least partially automatically remotely controlling the lateral guidance and/or the longitudinal guidance of the electric motor vehicle (511, 515); approval instructions for approving at least partially automated travel of the electric motor vehicle (511, 515) at the charging site (503); approval instructions for approving an at least partially automated travel of the electric vehicle (511, 515) along a due trajectory for the electric vehicle (511, 515) leading to the charging vehicle (303, 501), in particular a section of the due trajectory; -ambient data representative of an ambient environment of the electric vehicle (511, 515); -defining what the electric vehicle (511, 515) should do; an operating recommendation for the electric motor vehicle (511, 515); -the actual position of the electric vehicle (511, 515); an object list indicating objects in the surroundings of the electric motor vehicle (511, 515); -a vacancy recognition result indicating a respective occupancy state of at least one site in the surroundings of the electric motor vehicle (511, 515).

9. The method according to any one of the preceding claims, wherein, in the case of an at least partially automated electric motor vehicle (511, 515), the following is determined: during the travel of the electric vehicle to the charging site (503) and/or during the travel of the electric vehicle at the charging site (503), whether the electric vehicle (511, 515) should be assisted by infrastructure, and if so to what extent, by infrastructure, wherein the assistance of the electric vehicle (511, 515) by infrastructure is performed on the basis of the result of the determination.

10. The method according to claim 9, wherein the determination is made based on the availability of the infrastructure-supported assistance, and/or based on a load factor of the infrastructure-supported assistance, and/or based on a degree of automation of the electric motor vehicle (511, 515), and/or based on whether the infrastructure-supported assistance is desired and/or whether it has been paid or whether it has been promised that the infrastructure-supported assistance will be paid: during the travel of the electric vehicle to the charging site (503) and/or during the travel of the electric vehicle at the charging site (503), whether and, if so, to what extent the electric vehicle should be assisted by infrastructure.

11. The method of claim 9 or 10 when dependent on claim 6 and/or claim 8, wherein the determining of the scale level comprises determining: which of the infrastructure assistance data is to be determined for the electric vehicle (511, 515) is determined such that only the infrastructure assistance data determined accordingly is determined and transmitted to the electric vehicle (511, 515) in accordance with the determined scale level.

12. The method according to any one of the preceding claims, wherein a digital map of the determined charging location (503) is determined, which digital map is transmitted to the electric motor vehicle (511, 515).

13. The method according to any of the preceding claims referring to claim 2, wherein the charging location (503) is determined based on the desired charging time and/or the desired charging interval and/or the desired charging date in case of a task indicating a desired charging time and/or a desired charging interval and/or a desired charging date.

14. The method according to any of the preceding claims, wherein the automatic control of the charging process comprises a control of a charging robot (307) such that the charging robot establishes an electrical connection between the drive battery (517, 519) and the electrical energy store (305, 502) in order to charge the drive battery (517, 519) through the electrical connection.

15. The method according to any one of the preceding claims, wherein the travel of the electric motor vehicle (511, 515) to the charging site (503) is at least partially, in particular completely, manually guided travel without infrastructure assistance and/or at least partially, in particular completely, at least partially automatically guided travel.

16. The method according to any one of the preceding claims, wherein after the end of the charging process, the electric vehicle (511, 515) is assisted at least partially by infrastructure when continuing to travel, in particular when returning to an initial position of the electric vehicle (511, 515), from which initial position the electric vehicle (511, 515) travels to the charging location (503).

17. An apparatus (201) set up for carrying out all the steps of the method according to any one of the preceding claims.

18. A system (301) for charging a drive battery (517, 519) of an electric motor vehicle (511, 515), the system comprising:

a charging vehicle (303, 501) comprising an electrical energy store (305, 502); and

the device (201) according to claim 17.

19. A computer program (403), the computer program comprising instructions which, when the computer program (403) is implemented by a computer, cause the computer to implement the method according to any of claims 1 to 16.

20. A machine-readable storage medium (401) on which a computer program (403) according to claim 19 is stored.