WO2020207747A1

WO2020207747A1 - Method and device for operating a vehicle

Info

Publication number: WO2020207747A1
Application number: PCT/EP2020/057649
Authority: WO
Inventors: Martin WIESBOECK
Original assignee: Robert Bosch Gmbh
Priority date: 2019-04-11
Filing date: 2020-03-19
Publication date: 2020-10-15
Also published as: DE102019205216A1

Abstract

The invention relates to a method for operating a vehicle, in particular an electric vehicle, in which data from a plurality of data sources (91, 92, 93, 94) are acquired by a data acquisition unit (20); the acquired data together with data stored in a storage unit (40) are processed by an optimisation unit (50); optimisation data are generated by the optimisation unit (50); the optimisation data are transmitted to at least one output unit (60); and at least one functional unit (81, 82, 83, 84) of the vehicle is controlled by the at least one output unit (60) depending on the optimisation data. The invention also relates to a device (10) for operating a vehicle, in particular an electric vehicle, which is designed to carry out the method according to the invention.

Description

Method and device for operating a vehicle

The invention relates to a method for operating a vehicle, in particular an electric vehicle, wherein a data acquisition unit records data from a plurality of data sources and from at least one

Output unit is controlled at least one functional unit of the vehicle. The invention also relates to a device for operating a vehicle which is set up to carry out the method according to the invention.

State of the art

Conventional motor vehicles have a drive which usually comprises an internal combustion engine. It is becoming apparent, however, that electrically powered vehicles will increasingly be used in the future.

In such electric vehicles, rechargeable batteries are used to store electrical energy. To drive such an electric vehicle, an electric traction motor or several traction motors are provided, which are supplied with the electrical energy stored in the rechargeable battery.

Electric traction motors for electric vehicles are mainly designed as three-phase electric machines. For feeding

Three-phase alternating current in such an electrical machine can convert a direct voltage supplied by a rechargeable battery into a three-phase via an inverter, which is also referred to as an inverter

AC voltage can be converted.

Lithium battery cells are particularly suitable for applications in rechargeable batteries for electric vehicles. Lithium battery cells are characterized, among other things, by high energy densities, thermal stability and extremely low self-discharge. Several such lithium battery cells are electrically connected in series and in parallel with one another and closed

Battery systems connected. Electric vehicle batteries can be charged from an external energy source. The external energy source is, for example, a charging station that is fed via the public power supply network. The charging device comprises a charging unit for transferring electrical energy to the battery of the electric vehicle. When charging the battery of the electric vehicle, a charging current flows, as a result of which electrical energy is transferred to the battery.

Lithium battery cells can only be used within a certain range

Temperature range can be operated optimally. Outside of that

Lithium battery cells have a relatively high internal electrical resistance. The charging capacity of batteries in electric vehicles also depends heavily on the temperature of the battery cells. At low temperatures, the battery will therefore heat up during operation of the

Electric vehicle as well as during a charging process. The battery heats up when the electric vehicle is operated and when it is being charged. If the temperature of the battery cells is too high, the battery must therefore be cooled.

The range of an electric vehicle depends on the one hand on the consumption of electrical energy during operation. On the other hand, the range of an electric vehicle depends on the charging capacity and the state of charge of the battery. The charge capacity and state of charge of the battery depend on the temperature of the battery cells.

Disclosure of the invention

A method for operating a vehicle, in particular a

Electric vehicle proposed. According to the

Method according to the invention, data from a plurality of data sources is acquired by a data acquisition unit. Further data are already stored in a memory unit. The data stored in the storage unit document, in particular, events that were registered at earlier times. The data acquired by the data acquisition unit are processed by an optimization unit together with the data stored in the storage unit. Optimization data are generated by the optimization unit. In this case, the optimization unit makes a prediction of actions to be carried out at short notice, in particular by comparing the data recorded by the data recording unit with the data stored in the storage unit.

The optimization data generated by the optimization unit are transmitted to at least one output unit. The optimization data contain, for example, suggestions for actions which are suitable for the

Reduce the energy consumption of the vehicle, reduce the time required to charge the battery or increase the comfort of the vehicle user.

From the at least one output unit, depending on the optimization data transmitted by the optimization unit, at least one

Functional unit of the vehicle controlled. The activation of such a functional unit then brings about, for example, an action which is suitable for reducing the energy consumption of the vehicle, shortening the time required to charge the battery or increasing the comfort of the user of the vehicle.

According to an advantageous development of the invention, the data acquired by the data acquisition unit are also evaluated by an evaluation unit. The data evaluated by the evaluation unit are stored in the storage unit. As already mentioned, the data stored in the storage unit document, in particular, events that have already been registered. By comparing data acquired at a later point in time with the data stored in the memory unit, a prediction can therefore be made about actions to be carried out at short notice.

According to a further advantageous development of the invention, the data acquired by the data acquisition unit are stored together with the data in the

Memory unit already stored data evaluated by an evaluation unit. The data evaluated by the evaluation unit are stored in the storage unit. The data stored in the storage unit document, as already mentioned, especially events that have been registered. By comparing data acquired at a later point in time with the data stored in the memory unit, a prediction can therefore be made about actions to be carried out at short notice.

The joint processing of the data already stored in the storage unit and the data acquired by the data acquisition unit takes place in particular in the form of a learning algorithm. The data already stored in the storage unit are compared with the data recorded by the data acquisition unit. Depending on a result of such a data comparison, the data in the storage unit may be overwritten with changed data.

To the data sources of the vehicle whose data is from the

Data acquisition unit are acquired, for example, a clock, a calendar, a navigation system and / or a temperature sensor. The data acquired by the data acquisition unit then contain, for example

Information about a time of the current day, about a weekday, about current GPS coordinates of the vehicle, about routes traveled by the vehicle, about a temperature of a battery of the vehicle, about a temperature of an interior of the vehicle and about an outside temperature.

The at least one functional unit of the vehicle that is controlled by the at least one output unit is, for example, a heating device for heating an interior of the vehicle and / or a cooling device for cooling the interior of the vehicle and / or a heating device for heating a battery of the vehicle and / or or a cooling device for cooling the battery of the vehicle.

A device for operating a vehicle, in particular an electric vehicle, is also proposed. The device according to the invention is set up for performing the method according to the invention.

The device according to the invention preferably comprises a

Data acquisition unit for acquiring data from a plurality of data sources. The device also comprises a memory unit for

Storage of data. The storage unit stores data that in particular, document events that were registered at an earlier point in time.

The device also comprises an optimization unit for processing the data acquired by the data acquisition unit together with the data in the

Storage unit stored data and for generating

Optimization data. The optimization unit carries out a prediction of actions to be carried out at short notice, in particular by comparing the data recorded by the data recording unit with the data stored in the storage unit.

The device also includes at least one output unit for controlling at least one functional unit of the vehicle. The optimization data can be transmitted to the output unit. The optimization data contain, for example, suggestions for actions which are suitable for the

The output unit controls the at least one functional unit of the vehicle as a function of the optimization data. The activation of such a functional unit then brings about, for example, an action which is suitable for reducing the energy consumption of the vehicle

reduce the time required to charge the battery or increase the comfort of the user of the vehicle.

According to an advantageous development of the invention, the device further comprises an evaluation unit for evaluating the data acquired by the data acquisition unit and for storing the evaluated data in the

Storage unit. As already mentioned, the data stored in the memory unit document, in particular, actions that have already been carried out. By comparing data acquired at a later point in time with the data stored in the memory unit, a prediction can therefore be made about actions to be carried out at short notice.

According to a further advantageous development of the invention, the device further comprises an evaluation unit for evaluating the from Data acquisition unit acquired data together with the in the

Storage unit stored data and for storing the evaluated data in the storage unit. As already mentioned, the data stored in the memory unit document, in particular, actions that have been carried out. By comparing data acquired at a later point in time with the data stored in the memory unit, a prediction can therefore be made about actions to be carried out at short notice.

The joint processing of the data already stored in the storage unit and the data acquired by the data acquisition unit takes place in particular in the form of a learning algorithm. The data already stored in the storage unit are compared with those from the

Data acquisition unit acquired data. Depending on a result of such a data comparison, the data of the storage unit

possibly overwritten with changed data.

The data sources of the vehicle, the data of which is recorded by the data acquisition unit, include, for example, a clock, a calendar, a navigation system and / or a temperature sensor. The data acquired by the data acquisition unit then contain, for example, information about a time of the current day, about a weekday, about current GPS coordinates of the vehicle, about routes traveled by the vehicle, about a temperature of a battery of the vehicle, about a temperature of an interior of the vehicle and an outside temperature.

The at least one functional unit of the vehicle that can be controlled by the at least one output unit is, for example, a heating device for heating an interior of the vehicle and / or a cooling device for cooling the interior of the vehicle and / or a heating device for heating a battery of the vehicle and / or or a cooling device for cooling the battery of the vehicle.

Advantages of the invention

When the invention is used in a vehicle, in particular in an electric vehicle, the energy consumption of the vehicle can advantageously be reduced, for example. Likewise, the convenience of a user of the Vehicle can be advantageously increased. In the case of an electric vehicle, the time required to charge the battery can also be advantageously shortened. The method according to the invention allows a relatively reliable prediction of actions to be carried out at short notice. In this case, for example, static data can be present in the memory unit which, if necessary, can be adapted to the usual behavior of the user of the vehicle by appropriate programming or configuration.

The reliability of the prediction is improved, however, if the data acquired by the data acquisition unit are additionally evaluated by the evaluation unit and stored in the storage unit. The data in the memory unit are thus dynamically adapted to the current behavior of the user of the vehicle. The reliability of the prediction is further improved if the data acquired by the data acquisition unit

evaluated together with the data already stored in the storage unit and stored in the storage unit. The data in the memory unit are thus dynamically adapted to the behavior of the vehicle user in the form of a learning algorithm. This does not take into account the current behavior of the user, but also the usual behavior of the user. Short-term changes in the behavior of the user therefore do not have a strong influence on the data stored in the storage unit, and the prediction of actions to be carried out at short notice remains reliable.

Brief description of the drawings

Embodiments of the invention are explained in more detail with reference to the drawing and the following description.

It shows:

Figure 1 is a schematic representation of a device for operating a

Vehicle.

Embodiments of the invention

In the following description of the embodiments of the invention, the same or similar elements are denoted by the same reference symbols, A repeated description of these elements is dispensed with in individual cases. The figures represent the subject matter of the invention only schematically.

FIG. 1 shows a schematic representation of a device 10 for operating a vehicle, in particular for operating an electric vehicle. The

Device 10 includes, inter alia, a memory unit 40 for storing data. Alternatively, the device 10 can also communicate with an external storage unit 40 via a data connection. The external

Storage unit 40 is located in a cloud, for example. In the

Storage unit 40 stores, in particular, data that document events that were registered at earlier times.

The device 10 further comprises a data acquisition unit 20 which is used to acquire data from a first data source 91, a second data source 92, a third data source 93 and a fourth data source 94 of the vehicle.

The first data source 91 of the vehicle is in the present case a clock. The data acquisition unit 20 acquires data from the first data source 91 which contain information about a time of the current day.

In the present case, the second data source 92 of the vehicle is a calendar. The data acquisition unit 20 acquires from the second

Data source 92 Data that contains information about a day of the week.

In the present case, the third data source 93 is a

Vehicle navigation system. The third data source 93 can also be an external navigation device or a mobile phone with GPS function. The data acquisition unit 20 acquires from the third data source 93 data which contain information about current GPS coordinates of the vehicle and about routes traveled by the vehicle.

In the present case, the fourth data source 94 of the vehicle is temperature sensors. The data acquisition unit 20 acquires from the fourth data source 94 data, the information about a temperature of a battery of the vehicle, about a temperature of an interior of the vehicle and about contain an outside temperature. The fourth data source 94 can also be a data connection to a cloud, via which the device 10

communicates. In particular, information about the outside temperature can be transmitted to the data acquisition unit 20 from a cloud, for example from corresponding Internet services.

The device 10 can optionally include a configuration unit. Such a configuration unit stores data that contain the driver's desired values. The desired values contain, for example, information about whether an air conditioning system is active or not, whether one

Interior heating is active or not active, as well as a desired temperature for the interior of the vehicle. This value can, for example, be set lower by the driver in winter than in summer in order to save energy. The data acquisition unit 20 also acquires data from the configuration unit.

The device 10 further comprises an evaluation unit 30. Alternatively, the device 10 can also be connected to an external data link

Communicate evaluation unit 30. The evaluation unit 30 is used for

Evaluation of the data acquired by the data acquisition unit 20. The external evaluation unit 30 is located, for example, in a cloud. The

Evaluation unit 30 evaluates the data acquired by data acquisition unit 20 together with the data already stored in storage unit 40. The data already in the memory unit 40 are compared

stored data with the data acquired by the data acquisition unit 20. The evaluation unit 30 then stores the evaluated data in the

Storage unit 40. Depending on a result of the data comparison, the data in storage unit 40 may be overwritten with modified data.

The device 10 also comprises an optimization unit 50

Optimization unit 50 is used to process the from

Data acquisition unit 20 acquired data together with the in the

Storage unit 40 stored data. In particular, the optimization unit 50 compares the data acquired by the data acquisition unit 20 with the data stored in the storage unit 40. The optimization unit 50 generates optimization data. The

Optimization data contain, for example, suggestions for actions which are suitable for reducing the energy consumption of the vehicle, shortening the time required to charge the battery or increasing the comfort of the user of the vehicle.

The device 10 also comprises an output unit 60. The optimization data are transmitted to the output unit 60. The output unit 60 is used to control a first functional unit 81, a second functional unit 82, a third functional unit 83 and a fourth functional unit 84 of the vehicle.

The first functional unit 81 of the vehicle is in the present case a heating device for heating an interior of the vehicle. The second functional unit 82 of the vehicle is in the present case a cooling device for cooling the interior of the vehicle. The third functional unit 83 of the vehicle is in the present case a

Heating device for heating a battery in the vehicle. The fourth functional unit 84 of the vehicle is in the present case a

Cooling device for cooling the battery of the vehicle.

The output unit 60 controls the functional units 81, 82, 83, 84 of the vehicle as a function of the optimization data. The activation of such a functional unit 81, 82, 83, 84 then effects, for example, an action which is suitable for reducing the energy consumption of the vehicle, shortening the time required to charge the battery or increasing the comfort of the user of the vehicle.

For example, the data acquisition unit 20 acquires from the first data source 91 data with information about the time of the current day, from the second data source 92 information about the day of the week and from the third data source 93 information about current GPS coordinates of the vehicle. These data currently acquired by the data acquisition unit 20 are regularly processed together with the data already stored in the storage unit 40 in the form of a learning algorithm, and the processed data are regularly stored in the storage unit 40. In this way, for example, a route to work that the user of the vehicle regularly drives on working days, for example Monday to Friday, at a similar time in each case, is recognized. Thus, when the user starts the vehicle, a prediction can already be made in device 10 about the destination of the trip and about the duration of the trip. Depending on this, the

Optimization unit 50 suitable optimization data and transmits these to the functional units 81, 82, 83, 84 of the vehicle.

For example, if the driving time is relatively short, then there is no need to heat the battery. The third functional unit 83, that is to say the heating device for heating the battery, is therefore not activated. This saves electrical energy for heating the battery.

For example, if it is known in an electric vehicle that the battery will be rapidly charged after the destination has been reached, the fourth functional unit 84, that is to say the cooling device for cooling the battery, can be activated in good time. This means that the battery has at the beginning of the

Fast charge at a suitable temperature.

If, for example, a relatively low outside temperature is detected by the fourth data source 94, that is to say a temperature sensor, then the first

Functional unit 81, that is to say the heating device for heating the interior of the vehicle, can be activated. If the fourth data source 94 detects a relatively high outside temperature, the second functional unit 82, that is to say the cooling device for cooling the interior of the vehicle, can be activated accordingly before the start of a predictable journey.

If the fourth data source 94 detects a relatively low temperature of the battery, the third functional unit 83, that is to say the heating device for heating the battery, can be activated in good time before the start of a predictable journey, for example. When you start driving, the battery has a suitable working temperature.

In particular, the functional units 81, 82, 83, 84 of the vehicle can advantageously be activated before the start of a predictable journey, that is to say while the vehicle is still stationary and is connected to a charging station. About a Contact (not shown here) in a plug of the charging station detects the device 10 whether the vehicle is connected to a charging station. The electrical energy required to activate a functional unit 81, 82,

83, 84 can then be removed from the charging station, so that the battery of the vehicle is not discharged. This advantageously increases the range of the vehicle.

The invention is not restricted to the exemplary embodiments described here and the aspects emphasized therein. Rather, within the range specified by the claims, a large number of modifications are possible that are within the scope of expert knowledge.

Claims

Expectations

1. Method for operating a vehicle, in particular one

Electric vehicle, being

from a data acquisition unit (20) data from a plurality of

Data sources (91, 92, 93, 94) are acquired;

the recorded data are processed by an optimization unit (50) together with data stored in a storage unit (40);

optimization data are generated by the optimization unit (50); the optimization data are transmitted to at least one output unit (60); and

from the at least one output unit (60)

depending on the optimization data

at least one functional unit (81, 82, 83, 84) of the vehicle is controlled.

2. The method of claim 1, wherein

the data acquired by the data acquisition unit (20)

are evaluated by an evaluation unit (30); and

the evaluated data are stored in the memory unit (40).

3. The method of claim 1, wherein

the data acquired by the data acquisition unit (20)

together with the data stored in the storage unit (40) are evaluated by an evaluation unit (30); and

the evaluated data are stored in the memory unit (40).

4. The method according to any one of the preceding claims, wherein

the data sources (91, 92, 93, 94) are selected from a clock, a calendar, a navigation system and a temperature sensor.

5. The method according to any one of the preceding claims, wherein

the at least one functional unit (81, 82, 83, 84) is selected from a heating device for heating an interior of the vehicle, a cooling device for cooling the interior of the vehicle, a heating device for heating a battery of the vehicle and a cooling device for cooling the battery of the Vehicle.

6. Device (10) for operating a vehicle, in particular an electric vehicle, which is set up to carry out the method according to one of the preceding claims.

7. The device (10) according to claim 6, comprising

a data acquisition unit (20) for acquiring data from a

Plurality of data sources (91, 92, 93, 94);

a storage unit (40) for storing data;

an optimization unit (50) for processing the acquired data together with the data stored in the storage unit (40) and for generating optimization data; and

at least one output unit (60) for controlling at least one

Functional unit (81, 82, 83, 84) of the vehicle,

to which the optimization data can be transferred, and

which depending on the optimization data

which controls at least one functional unit (81, 82, 83, 84) of the vehicle.

8. Device (10) according to one of claims 6 to 7, further comprising an evaluation unit (30) for evaluating the from

Data acquisition unit (20) acquired data and

for storing the evaluated data in the memory unit (40).

9. Device (10) according to one of claims 6 to 7, further comprising an evaluation unit (30) for evaluating the from

Data acquisition unit (20) acquired data

together with the data stored in the storage unit (40) and for storing the evaluated data in the storage unit (40).

10. Device (10) according to one of claims 6 to 9, wherein

11. Device (10) according to one of claims 6 to 10, wherein